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64-630 - 1 & 6 TECHNOLOGY WAY - CONSERVATION COMMISSION iPVAYP11ti \A61-lfxt"N Grp CITY OF SALEM CONSERVATION COMMISSION M SITE VISIT FORM ; yv�(�'� Y PROJECT LOCATION: I I I W6kiA OF S E VISIT: CIN l1 PROJECT PROPONENT: A11A" 46h DEP FILE NUMBER: �"A — LP-30 PROPOSED WORK: �C(JJAJ IN ATTENDANCE: Commission Members/Agent: �� r f Abutters: Applicant/Property Owner/Representative: • SITEVISIT.PURPOSE:—�rL�!/, SITE VISIT DOCUMENTATION: ❑Photos ❑ Site Map ❑Other: OBSERVATIONS:: Take into account relevant aspects or features such as: natural or piped drainage or obvious pollution; topography; existing vegetation; possible alternative sites; signs of wildlife, possible vernal pools, rare species habitat; landmarks; recent or historical disturbances; proximity to other water bodies or drainage areas; adjacent land uses IMA rr RECOMMENDATIONS:' • S vs� tic e - o� . - �h _ _ �.. 1 ` t i r i � _ n rf i � . �. . , ... . . _ C '� +jj+ . � 4 s � . � I �g�'� + CITY OF SALEM CONSERVATION ON COMMISSION May 12, 2017 Anthony Klein Tech Way Associates LLC 1 Technology Way Salem, MA 01970 Re: Order of Conditions—DEP#64-630—Thermal Circuits Dear Mr. Klein: Enclosed, please find the Order of Conditions for the above-referenced project. Following the 10-business-day appeal period, this document and the attached Special Conditions must be recorded at the South Essex County Registry of Deeds (Shetland . Park, 45 Congress Street, Suite 4100, Salem, Massachusetts). Once recorded, please return a copy of Page 12 of the Order, which will indicate to the Commission that the document has been recorded. As indicated in the Order: 1. this Order must be recorded, 2. a sign shall be displayed showing DEP File# 64-630 within public view, and 3. contact me at least 48 hours prior to any activity to schedule a pre-construction meeting to review the Order with your hired contractor. If you have any further questions,please feel free to contact me at 978-619-5685. Sincerely, 0shley Green Conservation Agent Enclosures CC: DEP Northeast Regional Office Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 El WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City(rown A. General Information Please note: Salem this form has t. From: been modified Conservation Commission with added 2.This issuance is for space to a.®Order of Conditions b.❑Amended Order of Conditions accommodate (check one): the Registry of Deeds 3. To: Applicant: Requirements Anthony Klein Important: a. First Name b.Last Name When filling Tech Way Associates LLC out forms on c.Organization the 1 Technology Way computer, use onlthe d.Mailing Address y tab key to Salem MA 01970 move your e.Citylrown f.State Zi Code cursor-do g P not use the 4. Property Owner(if different from applicant): return �key. _I� a. First Name b.Last Name KAK Realty Trust c/o Thermal Circuits Anthony A Klein Trustee c.Organization rt0" See Above d.Mailing Address e.City/Town f.State g.Zip Code 5. Project Location: 1 &6 Technology Way Salem a.Street Address b.City/town Map 7 Lots 78 & 79 c.Assessors Map/Plat Number d. Parcel/Lot Number Latitude and Longitude, if known: 42d29m36s 70d56m30s d. Latitude e.Longitude wpaform5.00c• rev.6116/2015 Page 1 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem Citylrown A. General Information (cont.) 6. Property recorded at the Registry of Deeds for(attach additional information if more than one parcel): Essex South 66197 a.County b.Certificate Number(if registered land) 86501, 74004 499, 394 c.Book d.Page 5/1/17 5/11/17 5/12/17 7. Dates: a.Date Notice of Intent Filed b.Date Public Hearing Closed c.Date of Issuance 8. Final Approved Plans and Other Documents (attach additional plan or document references as needed): See Attached a. Plan Title b. Prepared By c.Signed and Stamped by d. Final Revision Date e.Scale f.Additional Plan or Document Title g. Date B. Findings t. Findings pursuant to the Massachusetts Wetlands Protection Act: Following the review of the above-referenced Notice of Intent and based on the information provided in this application and presented at the public hearing, this Commission finds that the areas in which work is proposed is significant to the following interests of the Wetlands Protection Act(the Act). Check all that apply: a. ® Public Water Supply b. ❑ Land Containing Shellfish c. ® Prevention of Pollution d. ® Private Water Supply e. ® Fisheries f. ® Protection of Wildlife Habitat g. ® Groundwater Supply h. ® Storm Damage Prevention i. ® Flood Control 2. This Commission hereby finds the project, as proposed, is:(check one of the following boxes) Approved subject to: a. ® the following conditions which are necessary in accordance with the performance standards set forth in the wetlands regulations. This Commission orders that all work shall be performed in accordance with the Notice of Intent referenced above, the following General Conditions, and any other special conditions attached to this Order. To the extent that the following conditions modify or differ from the plans, specifications, or other proposals submitted with the Notice of Intent, these conditions shall control. wpaform5doc• rev.6/16/2015 Page 2 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction#El Salem CiWrown B. Findings (cont.) Denied because: b. ❑ the proposed work cannot be conditioned to meet the performance standards set forth in the wetland regulations. Therefore, work on this project may not go forward unless and until a new Notice of Intent is submitted which provides measures which are adequate to protect the interests of the Act, and a final Order of Conditions is issued. A description of the performance standards which the proposed work cannot meet is attached to this Order. c. ❑ the information submitted by the applicant is not sufficient to describe the site, the work, or the effect of the work on the interests identified in the Wetlands Protection Act. Therefore, work on this project may not go forward unless and until a revised Notice of Intent is submitted which provides sufficient information and includes measures which are adequate to protect the Act's interests, and a final Order of Conditions is issued. A description of the specific information which is lacking and why it is necessary is attached to this Order as per 310 CMR 10.05(6)(c). 3. ® Buffer Zone Impacts: Shortest distance between limit of project 2+/- disturbance and the wetland resource area specified in 310 CMR 10.02(1)(a) a.linear feet Inland Resource Area Impacts: Check all that apply below. (For Approvals Only) Resource Area Proposed Permitted Proposed Permitted Alteration Alteration Replacement Replacement 4. ❑ Bank a.linear feet b.linear feet c.linear feet d.linear feet 5. ❑ Bordering Vegetated Wetland a.square feet b.square feet c.square feet d.square feet s. ❑ Land Under Waterbodies and a.square feet bsquare feet c.square feet d.square feet Waterways e.c/y dredged f.c/y dredged 7. ❑ Bordering Land Subject to Flooding a.square feet b.square feet c.square feet d.square feet Cubic Feet Flood Storage e.cubic feet f.cubic feet g.cubic feet h.cubic feet s. ❑ Isolated Land Subject to Flooding a.square feet b.square feet Cubic Feet Flood Storage c.cubic feet d.cubic feet e.cubic feet f.cubic feet g. ❑ Riverfront Area a.total sq.feet b.total sq.feet Sq ft within 100 It c.square feet d.square feet e.square feet f.square feet Sq ft between 100- 200 ft g.square feet h.square feet T square feet i.square feet wpaform5.do - rev.6/16/2015 Page 3 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEPTransaction# Salem City/Town B. Findings (cont.) Coastal Resource Area Impacts: Check all that apply below. (For Approvals Only) Proposed Permitted Proposed Permitted Alteration Alteration Replacement Replacement 10. El Designated Port Areas Indicate size under Land Under the Ocean, below 11. ❑ Land Under the Ocean a.square feet b.square feet c.dy dredged d.cly dredged 12. ❑ Barrier Beaches Indicate size under Coastal Beaches and/or Coastal Dunes below 13. ❑ Coastal Beaches cu yd cu yd a.square feet b.square feet c.nourishment d.nourishment 14. ❑ Coastal Dunes cu yd cu yd . a.square feet b.square feet c.nourishment d.nourishment 15. ❑ Coastal Banks a.linear feet b.linear feet 1s. ❑ Rocky Intertidal Shores N a.square feet b.square feet 17. ❑ Salt Marshes a.square-feet b. square feet c.square feet d.square feet 18. ❑ Land Under Salt Ponds a.square feet b.square feet c.Gy dredged d.Gy dredged 19. ❑ Land Containing Shellfish a.square feet b.square feet c.square feet d.square feet 20. ❑ Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above a.c/y dredged b.cty dredged 21. ❑ Land Subject to Coastal Storm a.square feet b.square feet Flowage 22. ❑ Riverfront Area a.total sq.feet b.total sq.feet Sq It within 100 ft c.square feet d.square feet e.square feet f.square feet Sq ft between 100- 200 ft g.square feet h.square feet i.square feet I.square feet wpatorm&doo• rev.6/16/2015 Page 4 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: l Bureau of Resource Protection - Wetlands 64-630 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem Cityrrown B. Findings (cont.) * 923.If the project is for 23. ❑ Restoration/Enhancement*: the purpose of restoring or a.square feet of BVW enhancing a b.square feet of salt marsh wetland resource area 24. ❑ Stream Crossing(s): in addition to the square footage that a.number of new stream crossings b.number of replacement stream crossings has been entered in C. General Conditions Under Massachusetts Wetlands Protection Act Section B.5.c or 13.17 cj(Salt The following conditions are only applicable to Approved projects. P ease en ere , 1. Failure to comply with all conditions stated herein, and with all related statutes and other the additional regulatory measures, shall be deemed cause to revoke or modify this Order. amount here. 2. The Order does not grant any property rights or any exclusive privileges; it does not authorize any injury to private property or invasion of private rights. 3. This Order does not relieve the permittee or any other person of the necessity of complying with all other applicable federal, state, or local statutes, ordinances, bylaws, or regulations. 4. The work authorized hereunder shall be completed within three years from the date of this Order unless either of the following apply: a. The work is a maintenance dredging project as provided for in the Act; or b. The time for completion has been extended to a specified date more than three years, but less than five years, from the date of issuance. If this Order is intended to be valid for more than three years, the extension date and the special circumstances warranting the extended time period are set forth as a special condition in this Order. c. If the work is for a Test Project, this Order of Conditions shall be valid for no more than one year. 5. This Order may be extended by the issuing authority for one or more periods of up to three years each upon application to the issuing authority at least 30 days prior to the expiration date of the Order. An Order of Conditions for a Test Project may be extended for one additional year only upon written application by the applicant, subject to the provisions of 310 CMR 10.05(11)(f). 6. If this Order constitutes an Amended Order of Conditions, this Amended Order of Conditions does not extend the issuance date of the original Final Order of Conditions and the Order will expire on_unless extended in writing by the Department. 7. Any fill used in connection with this project shall be clean fill. Any fill shall contain no trash, refuse, rubbish, or debris, including but not limited to lumber, bricks, plaster, wire, lath, paper, cardboard, pipe, tires, ashes, refrigerators, motor vehicles, or parts of any of the foregoing. wWorm5.tloc• rev.6/162015 Page 5 o112 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 El WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town C. General Conditions Under Massachusetts Wetlands Protection Act 8. This Order is not final until all administrative appeal periods from this Order have elapsed, or if such an appeal has been taken, until all proceedings before the Department have been completed. 9. No work shall be undertaken until the Order has become final and then has been recorded in the Registry of Deeds or the Land Court for the district in which the land is located, within the chain of title of the affected property. In the case of recorded land, the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land upon which the proposed work is to be done. In the case of the registered land, the Final Order shall also be noted on the Land Court Certificate of Title of the owner of the land upon which the proposed work is done. The recording information shall be submitted to the Conservation Commission on the form at the end of this Order, which form must be stamped by the Registry of Deeds, prior to the commencement of work. 10. A sign shall be displayed at the site not less then two square feet or more than three square feet in size bearing the words, "Massachusetts Department of Environmental Protection" [or, "MassDEP"] "File Number 64-630 " 11. Where the Department of Environmental Protection is requested to issue a Superseding Order, the Conservation Commission shall be a party to all agency proceedings and hearings before MassDEP. 12. Upon completion of the work described herein, the applicant shall submit a Request for Certificate of Compliance(WPA Form 8A)to the Conservation Commission. 13. The work shall conform to the plans and special conditions referenced in this order. 14. Any change to the plans identified in Condition#13 above shall require the applicant to inquire of the Conservation Commission in writing whether the change is significant enough to require the filing of a new Notice of Intent. 15. The Agent or members of the Conservation Commission and the Department of Environmental Protection shall have the right to enter and inspect the area subject to this Order at reasonable hours to evaluate compliance with the conditions stated in this Order, and may require the submittal of any data deemed necessary by the Conservation Commission or Department for that evaluation. 16. This Order of Conditions shall apply to any successor in interest or successor in control of the property subject to this Order and to any contractor or other person performing work conditioned by this Order. wpafo mEdoc• rev.6116/2015 Page 6M12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 J� WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEPTransacbon# Salem cityrro" C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) 17. Prior to the start of work, and if the project involves work adjacent to a Bordering Vegetated Wetland, the boundary of the wetland in the vicinity of the proposed work area shall be marked by wooden stakes or flagging. Once in place, the wetland boundary markers shall be maintained until a Certificate of Compliance has been issued by the Conservation Commission. 18. All sedimentation barriers shall be maintained in good repair until all disturbed areas have been fully stabilized with vegetation or other means.At no time shall sediments be deposited in a wetland or water body. During construction, the applicant or his/her designee shall inspect the erosion controls on a daily basis and shall remove accumulated sediments as needed. The applicant shall immediately control any erosion problems that occur at the site and shall also immediately notify the Conservation Commission, which reserves the right to require additional erosion and/or damage prevention controls it may deem necessary. Sedimentation barriers shall serve as the limit of work unless another limit of work line has been approved by this Order. 19. The work associated with this Order(the"Project') (1) ® is subject to the Massachusetts Stormwater Standards (2) ❑ is NOT subject to the Massachusetts Stormwater Standards If the work is subject to the Stormwater Standards,then the project is subject to the following conditions: . a) All work, including site preparation, land disturbance, construction and redevelopment, shall be implemented in accordance with the construction period pollution prevention and erosion and sedimentation control plan and, if applicable, the Stormwater Pollution Prevention Plan required by the National Pollution Discharge Elimination System Construction General Permit as required by Stormwater Condition 8. Construction period erosion, sedimentation and pollution control measures and best management practices (BMPs)shall remain in place until the site is fully stabilized. b) No stormwater runoff may be discharged to the post-construction stormwater BMPs unless and until a Registered Professional Engineer provides a Certification that: i. all construction period BMPs have been removed or will be removed by a date certain specified in the Certification. For any construction period BMPs intended to be converted to post construction operation for stormwater attenuation, recharge, and/or treatment, the conversion is allowed by the MassDEP Stormwater Handbook BMP specifications and that the BMP has been properly cleaned or prepared for post construction operation, including removal of all construction period sediment trapped in inlet and outlet control structures; ii. as-built final construction BMP plans are included, signed and stamped by a Registered Professional Engineer, certifying the site is fully stabilized; N. any illicit discharges to the stormwater management system have been removed, as per the requirements of Stormwater Standard 10; wpaform5.dw- rev.6/16/2015 Page 7 N 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem Cityfrown C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) iv. all post-construction stormwater BMPs are installed in accordance with the plans (including all planting plans)approved by the issuing authority, and have been inspected to ensure that they are not damaged and that they are in proper working condition; v. any vegetation associated with post-construction BMPs is suitably established to withstand erosion. c) The landowner is responsible for BMP maintenance until the issuing authority is notified that another party has legally assumed responsibility for BMP maintenance. Prior to requesting a Certificate of Compliance, or Partial Certificate of Compliance, the responsible party(defined in General Condition 18(e))shall execute and submit to the issuing authority an Operation and Maintenance Compliance Statement("O&M Statement) for the Stormwater BMPs identifying the party responsible for implementing the stormwater BMP Operation and Maintenance Plan ("O&M Plan")and certifying the following: L)the O&M Plan is complete and will be implemented upon receipt of the Certificate of Compliance, and ii.)the future responsible parties shall be noted in writing of their ongoing legal responsibility to operate and maintain the stormwater management BMPs and implement the Stormwater Pollution Prevention Plan. d) Post-construction pollution prevention and source control shall be implemented in accordance with the long-term pollution prevention plan section of the approved Stormwater Report and, if applicable, the Stormwater Pollution Prevention Plan required by the National Pollution Discharge Elimination System Multi-Sector General Permit. e) Unless and until another party accepts responsibility, the landowner, or owner of any drainage easement, assumes responsibility for maintaining each BMP. To overcome this presumption, the landowner of the property must submit to the issuing authority a legally binding agreement of record, acceptable to the issuing authority, evidencing that another entity has accepted responsibility for maintaining the BMP, and that the proposed responsible party shall be treated as a permittee for purposes of implementing the requirements of Conditions 18(f)through 18(k)with respect to that BMP. Any failure of the proposed responsible party to implement the requirements of Conditions 18(f)through 18(k)with respect to that BMP shall be a violation of the Order of Conditions or Certificate of Compliance. In the case of stormwater BMPs that are serving more than one lot, the legally binding agreement shall also identify the lots that will be serviced by the stormwater BMPs. A plan and easement deed that grants the responsible party access to perform the required operation and maintenance must be submitted along with the legally binding agreement. f) The responsible party shall operate and maintain all stormwater BMPs in accordance with the design plans, the O&M Plan, and the requirements of the Massachusetts Stormwater Handbook. w aform&fto - rev.6/16/2015 Page 8 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-630 WPA Form 5 — Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEPTransaction# Salem Cityrrown C. General Conditions Under Massachusetts Wetlands Protection Act (cont.) g) The responsible party shall: 1. Maintain an operation and maintenance log for the last three(3)consecutive calendar years of inspections, repairs, maintenance and/or replacement of the stormwater management system or any part thereof, and disposal (for disposal the log shall indicate the type of material and the disposal location); 2. Make the maintenance log available to MassDEP and the Conservation Commission ("Commission") upon request; and 3. Allow members and agents of the MassDEP and the Commission to enter and inspect the site to evaluate and ensure that the responsible party is in compliance with the requirements for each BMP established in the O&M Plan approved by the issuing authority. h) All sediment or other contaminants removed from stormwater BMPs shall be disposed of in accordance with all applicable federal, state, and local laws and regulations. i) Illicit discharges to the stormwater management system as defined in 310 CMR 10.04 are prohibited. j) The stormwater management system approved in the Order of Conditions shall not be changed without the prior written approval of the issuing authority. k) Areas designated as qualifying pervious areas for the purpose of the Low Impact Site Design Credit(as defined in the MassDEP Stormwater Handbook, Volume 3, Chapter 1, Low Impact Development Site Design Credits)shall not be altered without the prior written approval of the issuing authority. 1) Access for maintenance, repair, and/or replacement of BMPs shall not be withheld. Any fencing constructed around stormwater BMPs shall include access gates and shall be at least six inches above grade to allow for wildlife passage. Special Conditions(if you need more space for additional conditions, please attach a text document): 20. For Test Projects subject to 310 CMR 10.05(l 1), the applicant shall also implement the monitoring plan and the restoration plan submitted with the Notice of Intent. If the conservation commission or Department determines that the Test Project threatens the public health, safety or the environment, the applicant shall implement the removal plan submitted with the Notice of Intent or modify the project as directed by the conservation commission or the Department. w aform&doc• rev.6/16/2015 Page 9 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands 64-x30 WPA Form 5 — Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEP Transaction# Salem City/Town D. Findings Under Municipal Wetlands Bylaw or Ordinance 1. Is a municipal wetlands bylaw or ordinance applicable? ® Yes ❑ No 2. The Salem hereby finds (check one that applies): Conservation Commission a. ❑ that the proposed work cannot be conditioned to meet the standards set forth in a municipal ordinance or bylaw, specifically: 1.Municipal Ordinance or Bylaw 2.Citation Therefore, work on this project may not go forward unless and until a revised Notice of Intent is submitted which provides measures which are adequate to meet these standards, and a final Order of Conditions is issued. b. ® that the following additional conditions are necessary to comply with a municipal ordinance or bylaw: Wetlands Protection &Conservation Ordinance c.50 1.Municipal Ordinance or Bylaw 2.Citation 3. The Commission orders that all work shall be performed in accordance with the following conditions and with the Notice of Intent referenced above. To the extent that the following conditions modify or differ from the plans, specifications, or other proposals submitted with the Notice of Intent, the conditions shall control. The special conditions relating to municipal ordinance or bylaw are as follows(if you need more space for additional conditions, attach a text document): Attached special conditions are issued under the Wetlands Protection Act and are sufficient for compliance with the local ordinance wpdormsdw- rev.6/16/2015 Page 10 of 12 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands u4- u30 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 eDEPTran Ion# Sa��1i1 City/Town E. Signatures Important:When This Order is valid for three years,unless otherwise specified as a specialrj t 2 (�" filling out forms on the computer, condition pursuant to General Conditions#4,from the date of issuance. 1.Date of Issuance use only the tab Please indicate the number of members who will sign this form. key to move your This Order must be signed by a majority of the Conservation Commission. 2.Number of Signers cursor-do not use the return The Order must be mailed by certified mail(return receipt requested)or han elivered to key. the applicant.A copy must be mailed, hand delivered or filed electronicall th ame time VQ with the appropriate MassDEP Regional Office. - .. , . V m� Signatures: J "m" El by hand delivery on A(by certified mail,return receipt requested on SI IZ� Date Date F. Appeals The applicant,the owner,any person aggrieved by this Order, any owner of land abutting the land subject to this Order, or any ten residents of the city or town in which such land is located, are hereby notified of their right to request the appropriate MassDEP Regional Office to issue a Superseding Order of Conditions.The request must be made by certified mail or hand delivery to the Department,with the appropriate filing fee and a completed Request for Departmental Action Fee Transmittal Form, as provided in 310 CMR 10.03(7) within ten business days from the date of issuance of this Order.A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant, if he/she is not the appellant. Any appellants seeking to appeal the Department's Superseding Order associated with this appeal will be required to demonstrate prior participation in the review of this project. Previous participation in the permit proceeding means the submission of written information to the Conservation Commission prior to the close of the public hearing, requesting a Superseding Order,or providing written information to the Department prior to issuance of a Superseding Order. The request shall state clearly and concisely the objections to the Order which is being appealed and how the Order does not contribute to the protection of the interests identified in the Massachusetts Wetlands Protection Act(M.G.L, c. 131, §40),and is inconsistent with the wetlands regulations (310 CMR 10.00). To the extent that the Order is based on a municipal ordinance or bylaw, and not on the Massachusetts Wetlands Protection Act or regulations,the Department has no appellate jurisdiction. .Passigs.d.- rev.oazsnoro Page it of 17- I ElMassachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection -Wetlands 64-630 WPA Form 5 - Order of Conditions MassDEP File# Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 el Transaction# Salem City/town G. Recording Information Prior to commencement of work, this Order of Conditions must be recorded in the Registry of Deeds or the Land Court for the district in which the land is located, within the chain of title of the affected property. In the case of recorded land, the Final Order shall also be noted in the Registry's Grantor Index under the name of the owner of the land subject to the Order. In the case of registered land, this Order shall also be noted on the Land Court Certificate of Title of the owner of the land subject to the Order of Conditions. The recording information on this page shall be submitted to the Conservation Commission listed below. Conservation Commission Detach on dotted line, have stamped by the Registry of Deeds and submit to the Conservation Commission. ----------------- --------------------------------------------------------------------------------------------- To: Conservation Commission Please be advised that the Order of Conditions for the Project at: Protect Location MassDEP File Number Has been recorded at the Registry of Deeds of: County Book Page for: Property owner and has been noted in the chain of title of the affected property in: Book Page In accordance with the Order of Conditions issued on: Date If recorded land, the instrument number identifying this transaction is: Instrument Number If registered land, the document number identifying this transaction is: Document Number Signature of Applicant wpa1om5.d0c• rev.6/16/2015 Page 12 of 12 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: Request for Departmental Action Fee Transmittal Form Provided by DEP Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. Request Information 1. Location of Project a.Street Address b.City/Town,Zip c.Check number d. Fee amount Important: When filling 2 Person or party making request(If appropriate, name the citizen group's representative): out forms on the computer, Name use only the tab key to Mailing Address move your cursor-do City/Town State Zip Code not use the return key. Phone Number Fax Number(if applicable) _Q 3. Applicant(as shown on Determination of Applicability(Form 2), Order of Resource Area Delineation (Form 4B), Order of Conditions (Form 5), Restoration Order of Conditions(Form SA), or Notice of Non-Significance(Form 6)): Name Mailing Address City/Town State Zip Code Phone Number Fax Number(if applicable) 4. DEP File Number: B. Instructions 1. When the Departmental action request is for(check one): ❑ Superseding Order of Conditions— Fee: $120.00(single family house projects)or$245(all other projects) ❑ Superseding Determination of Applicability—Fee: $120 ❑ Superseding Order of Resource Area Delineation—Fee: $120 wpafor &dcc• rev.422/2015 Page 1 of 2 ILIMassachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands DEP File Number: Request for Departmental Action Fee Transmittal Form Provided by DEP Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Instructions (cont.) Send this form and check or money order, payable to the Commonwealth of Massachusetts,to: Department of Environmental Protection Box 4062 Boston, MA 02211 2. On a separate sheet attached to this form, state clearly and concisely the objections to the Determination or Order which is being appealed. To the extent that the Determination or Order is based on a municipal bylaw, and not on the Massachusetts Wetlands Protection Act or regulations, the Department has no appellate jurisdiction. 3. Send a copy of this form and a copy of the check or money order with the Request for a Superseding Determination or Order by certified mail or hand delivery to the appropriate DEP Regional Office(see http://www.mass.gov/eea/agencies/massdep/about/contacts/). 4. A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant, if he/she is not the appellant. v W..5.dm• rev.4/22/2015 Page 2 of 2 Attachment to Order of Conditions # 64630 Page 1 of ATTACHMENT TO ORDER OF CONDITIONS SALEM CONSERVATION COMMISSION DEP FILE #64-630 Thermal Circuits 1&6 Technology Way City of Salem,Massachusetts ADDITIONAL FINDINGS Based on the Estimated Habitats of Rare Wildlife and Certified Venial Pools Map (5/8/17, online) from Natural Heritage & Endangered Species Program (NHESP) of the Massachusetts Division of Fisheries and Wildlife, it has been determined that this project does not occur near any habitat of state-listed rare wildlife species nor contain any venial pools. This Order permits expansion of an existing building and associated improvements per approved plans and the following conditions. GENERAL CONDITIONS 1. This Order of Conditions must be recorded in its entirety(including all 5 pages of Special Conditions) at the Essex County Registry of Deeds or the Land Court for the district in which the land is located, after the expiration of the 10-day appeal period and within 30 days of the issuance. A copy of the recording information must be submitted to the Salem Conservation Commission before any work approved in this Order commences. 2. Approval of this application does not constitute compliance with any law or regulation other than M.G.L Chapter 131, Section 40,Wetlands Regulations 310 CMR 10.00 and the City of Salem Wetlands Protection Ordinance, Salem Code Chapter 50. 3. All work shall be performed in accordance with this Order of Conditions and approved site plan(s). No alteration of wetland resource areas or associated buffer zones, other than that approved in this Order, shall occur on this property without prior approval from the Commission. 4. Prior to any work commencing on site, a DEP Sign showing DEP File#64630 must be installed at the entrance to the site and seen from the public way,but not placed on a living tree. 5. No work approved in this Order may commence until the ten(10)day appeal period has lapsed from the date of the issuance of this Order. 6. With respect to this Order,the Commission designates the Conservation Agent as its agent with powers to act on its behalf in administering and enforcing this Order. 7. The Commission or its Agent,officers,or employees shall have the right to enter and inspect the property at any time for compliance with the conditions of this Order,the Wetlands Protection Act MGL Chapter 131, Section 40,the Wetlands Regulations 310 CMR 10.00,and shall have the right to require any data or documentation that it deems necessary for that evaluation. Attachment to Order of Conditions # 64630 Page 2 of 8. The term"Applicant'as used in this Order of Conditions shall refer to the owner,any successor in interest or successor in control of the property referenced in the Notice of intent, supporting documents and this Order of Conditions. The Commission shall be notified in writing within 30 days of all transfers of title of any portion of the property that takes place prior to issuance of the Certificate of Compliance. 9. It is the responsibility of the applicant to procure all other applicable federal, state and local permits and approvals associated with this project. These permits may include but are not necessarily limited to the following: (1) Section 404 of the Federal Water Pollution Control Act(P.L. 92-500, 86 stat. 816),U.S.Army Corps of Engineers. (2) Water Quality Certification in accordance with the Federal Water Pollution Control under authority of sec.27(5)of Chapter 21 of the Massachusetts General Laws as codified in 314 CMR 9.00. (3) Design Requirements for Construction in Floodplains under the State Building Code(780 CMR 744.). 10. If there are conflicting conditions within this Order,the stricter condition(s) shall rule. 11. All work shall be performed so as to ensure that there will be no sedimentation into wetlands and surface waters during construction or after completion of the project. 12. The Commission or its Agent shall have the discretion to modify the erosion/siltation control methods and boundary during construction if necessary. 13. The Commission reserves the right to impose additional conditions on portions of this project or this site to mitigate any actual or potential impacts resulting from the work herein permitted. 14. The work shall conform to the following attached plans and special conditions: Final Approved Plans Thermal Circuits Addition, #1 Technology Way, Salem, Mass. (Cover Sheet, Existing Conditions, Site Plan, Detail Sheet) (Title) 4/20/17 (Dated) Peter J. Ogren (Signed and Stamped by) City of Salem Conservation Commission (On file with) 15. Any proposed changes in the approved plan(s)or any deviation in construction from the approved plan(s) shall require the applicant to file a Notice of Project Change with the Commission. The Notice shall be accompanied by a written inquiry prior to their implementation in the field, as to whether the change(s) is substantial enough to require filing a new Notice of Intent or a request to correct or amend this Order of Conditions. A copy of such request shall at the same time be sent to the Department of Environmental Protection. Attachment to Order of Conditions # 64-630 Page 3 of 16. In conjunction with the sale of this property or any portion thereof before a Certificate of Compliance has been issued,the applicant or current landowner shall submit to the Commission a statement signed by the buyer that he/she is aware of an outstanding Order of Conditions on the property and has received a copy of the Order of Conditions. 17. [Reserved]. PRIOR TO CONSTRUCTION 18. Prior to the commencement of any activity on this site other than activities listed above,there must be a Pre-Construction Meeting on site between the project supervisor,the contractor responsible for the work, and the Conservation Agent and/or a member of the Conservation Commission to ensure that the requirements of the Order of Conditions are understood. The staked erosion control line shall be adjusted,if necessary,during the pre-construction meeting. Please contact the Conservation Agent at (978)619-5685 at least forty-eight(48)hours prior to construction to arrange for the Pre- Construction Meeting. 19. Prior to the pre-construction meeting and commencement of any activity on this site,sedimentation and erosion control barriers shall be installed as shown on the approval plan(s)and detail drawings. The Commission and/or its Agent shall inspect and approve such installation at the pre-construction meeting. 20. No clearing of vegetation,including trees,or disturbance of soil shall occur prior to the pre-construction meeting. Minimal disturbance of shrubs and herbaceous plants shall be allowed prior to the pre- construction meeting if absolutely necessary in order to place erosion control stakes where required. 21. There shall be adequate additional erosion and sediment controls stored onsite for emergency purposes. EROSION CONTROL 22. Appropriate erosion control devices shall be in place prior to the beginning of any phase of construction, and shall be maintained during construction in any wetland resource area and/or buffer zones. The erosion control measures shown on the approval plan(s)and provisions in the Order will be the minimum standards for this project; the Commission or its Agent may require additional measures. 23. All debris, fill and excavated material shall be stockpiled a location far enough away from the wetland resource areas to prevent sediment from entering wetland resource areas. 24. Erosion and sedimentation control devices shall be inspected after each storm event and repaired or replaced as necessary. Any accumulated silt adjacent to the barriers shall be removed. 25. The area of construction shall remain in a stable condition at the close of each construction day. 26. Any de-watering of trenches or other excavation required during construction shall be conducted so as to prevent siltation of wetland resource areas. All discharge from de-watering activities shall be filtered through straw bale sediment traps,silt filter bags or other means approved by the Commission or its Administrator. 27. Within thirty(30)days of completion of construction on any given portion of the project,all disturbed areas in the completed portion of the site shall be permanently stabilized with rapidly growing vegetative cover,using sufficient top soil to assure long-term stabilization of disturbed areas. Attachment to Order of Conditions # 64-630 "I WOO Page 4 of 28. If soils are to be disturbed for longer than two(2)months, a temporary cover of rye or other grass should be established to prevent erosion and sedimentation. If the season is not appropriate for plant growth,exposed surface shall be stabilized by other appropriate erosion control measures, firmly anchored,to prevent soils from being washed by rain or flooding. DURING CONSTRUCTION 29. A copy of this Order of Conditions and the plan(s)approved in this Order shall be available on site at all times when work is in progress. 30. No alteration or activity shall occur beyond the limit of work as defined by the siltation barriers shown on the approved plan(s). 31. All waste products,grubbed stumps, slash;construction materials,etc.shall be deposited at least 100 feet from wetland resource areas and 200 feet from river. 32. Cement trucks shall not be washed out in any wetland resource or buffer zone area,nor into any drainage system. Any deposit of cement or concrete products into a buffer zone or wetland resource area shall be immediately removed. 33. All exposed sub-soils shall be covered by a minimum of three(3)inches of quality screened loam topsoil prior to seeding and final stabilization. 34. Immediately following drainage structure installation all inlets shall be protected by silt fence,strawbale barriers and/or silt bags to filter silt from stormwater before it enters the drainage system. 35. There shall be no pumping of water from wetland resource areas. 36. All equipment shall be inspected regularly for leaks. Any leaking hydraulic lines,cylinders or any other components shall be fixed immediately. 37. During construction,all drainage structures shall be inspected regularly and cleaned as necessary. 38. The applicant is herby notified that failure to comply with all requirements herein may result in the issuance of enforcement actions by the Conservation Commission including,but not limited to,civil administrative penalties under M.G.L Chapter 21 A,section 16. AFTER CONSTRUCTION 39. Upon completion of construction and final soil stabilization,the applicant shall submit the following to the Conservation Commission to request a Certificate of Compliance(COC): (1) A Completed Request for a Certificate of Compliance form(WPA Form 8A or other form if required by the Conservation Commission at the time of request). (2) A letter from a Registered Professional Engineer certifying compliance of the property with this Order of Conditions. (3) An"As-Built"plan signed and stamped by a Registered Professional Engineer or Land Surveyor showing post-construction conditions within all areas under the jurisdiction of the Massachusetts Wetlands Protection Act. This plan shall include at a minimum: (a) All wetland resource area boundaries with associated buffer zones and regulatory setback areas taken from the plan(s)approved in this Order of Conditions; Attachment to Order of Conditions# 64630 Page 5 of (b) Locations and elevations of all stormwater management conveyances,structures and best management designs,including foundation drains,constructed under this Order within any wetland resource area or buffer zone; (c) Distances from any structures constructed under this Order to wetland resource areas- "structures"include,but are not limited to,all buildings,septic system components,wells, utility lines,fences,retaining walls,and roads/driveways; (d) A line delineating the limit of work-"work"includes any filling,excavating and/or disturbance of soils or vegetation approved under this Order; 40. When issued,the Certificate of Compliance must be recorded at the Essex County Registry of Deeds and a copy of the recording submitted to the Salem Conservation Commission. 41. If the completed work differs from that in the original plans and conditions,the report must specify how the work differs; at which time the applicant shall fust request a modification to the Order. Only upon review and approval by the Commission,may the applicant request in writing a Certificate of Compliance as described above. 42. Erosion control devices shall remain in place and properly functioning until all exposed soils have been stabilized with final vegetative cover and the Conservation Commission and/or its Agent has authorized their removal. ADDITIONAL CONDITIONS 43. All parking lot curbing along wetlands edge shall be vertical or sloped granite.Prior to construction, applicant shall provide detail to Conservation Agent for review and approval. 44. Boulders shall be placed between parking lot curbing and riprap wall of an adequate size and spacing to serve as a vehicle barrier between the parking lot and the wetlands. 45. Prior to construction,applicant shall revise final construction plans per any subsequent comments from the Conservation Commission Chair. PERPETUAL CONDITIONS 46. As part of the operation and maintenance log required per Condition C.(g)1-3 of WPA Form 5, annual inspections and maintenance of the 2"roof drains shall be documented. 603 Salem Street Nantucket, MA 02554 Wakefield, MA 01880 Tel: (508) 228-7909 Tel: (781) 246-2800 SAL-0042A Hayes Engineering, Inc. Fax: (781)246-7596 Refer to File# June 2, 2017 Ashley Green, Conservation Agent Conservation Commission 120 Washington Street, 3`d Floor Salem, MA 01970 Email: Agreen(d.)salem.com RE: 1 & 6 Technology Way/Thermal Circuits Dear Ms. Green, The following is a response to the memo from Gregory M. St.Louis, P.E., Chair of the Salem Conservation Commission, dated May 25, 2017. Numbered paragraphs in this response correspond to the numbered paragraphs in that memo. 1. A note requiring annual inspection to the outlet pipes has been included on the design plan, and we have added a detail showing a 2-inch orifice with "bee-hive' type grate. 2. The rooftop outlet volumetric computations are included in the pond files (attached). It is those storage volumes that the as-built will need to be compared to. 3. You are correct. The sizing was for the VortSentry HS-36, but sizing for the STC-900 was provided as an equivalent. 4. All utilities will be "dig safed" before construction and, where new water and sewer services have been designed, they are 10 feet from each other. 5. If 80% TSS removal is utilized for the rooftop runoff, the diminimous calculation cannot reach the 80% level. Consequently, there is no sense in recalculating it. A VortSentry HS-36 has been added to the loading dock area. 6. The plan has been changed to include the VortSentry on the loading dock discharge. 7. It is anticipated that the 36-inch driveway culvert would be inspected with the inspection of other drainage facilities. 8. The TSS removal calculations do include the HS-36 as a 77% removal. 9. No new dumpster facilities are proposed as part of this project. 10. Existing sewer along the building edge will be protected during construction. 11. Spot shots have been added to the proposed 'roadway" parking. 12. Actual plotted locations have been added for flags Al through A7. 13. The 4-inch outlet at elevation 99.5 is included with a description of the chambers. The flow line of the 6-inch cast iron roof drain is indicated as 100.1 at the discharge from the building. 14. A test hole in the area of the proposed infiltration units encountered no groundwater to a depth of 78 inches, where refusal was encountered. With the floor of the units at 97.5, the units will be two (2) feet above the ledge. It is impossible to modify this design as the roof runoff discharge from the foundation is as high as possible, requiring that roof drains be routed along the ceiling and then down the building wall, and proposed grades at the parking lot are already above the proposed building floor. 15. We have removed snow storage from the 100-foot buffer zone. 16. The forebays will be constructed in accordance with the volumes reported in the hydraulic report. 17. The 10-foot spillway length is correct. 18. We could add flared-end sections to all the outfalls, but our largest outfall is a 12-inch, and a flared-end section was thought not to be required. We certainly think that a flared-end section is not required for a 4-inch or 6-inch outfall. 19. A slope granite curb detail set in concrete has been added to the plan. 20. We are not proposing to extend the sanitary sewer at the crossing at this time. 21. The catch basin and 12-inch RCP on the north side of the building is not to be abandoned, but is to be kept as a yard drain. 22. We do not believe it is possible to relocate the 24-inch RCP as any relocation will significantly increase its length, and it already runs at a .3. Storm drainage can be run under a building as long as it is in ductile iron pipe. In addition, we would definitely encounter ledge moving the pipe outside the building footprint. 23. The closed system calculation of"not accurate" refers to the roof drain which runs under the slab, which is proposed to be 10 inches in size, and it is not accurate because the pipe flow calculations reflect only open channel flow. That pipe is under closed channel flow. The following is provided relative to the additional conditions in the Conservation Commission Order. 43. Details of slope granite curbing have been provided for the parking lot or driveway edge adjacent to the wetlands. Slope granite curbing is to be used in all areas except where the gravity concrete block wall is required. In that case, a 6-inch reveal off the cap block will be utilized. 44. Boulders have been indicated in all areas where slope granite curbing is used, but not where the large concrete cap block is utilized. 45. The amended plans responding to the concerns of the Commission Chair, as well as items in the Order of Conditions, accompany this response. Very truly yours, N-�t's Peter J. Ogren, P.E., P.L.S. President PJO/dab Enclosures cc: Greg St. Louis — Gstlouis(a)Salem.com Tom Devine —Tdevine(a.Salem.com Anthony Klein — Klein(cDthermalcircuits.com Harry Samolchuk— Hsamolchuk(a)connollvbrothers.com pr-technologyR Type 1/124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 20 Summary for Pond 5P: rooftop detention Inflow Area = 21,578 sf,100.00% Impervious, Inflow Depth = 2.87" for 2 Year event -= Inflow = 1.48 cfs @ 12.08 hrs, Volume= 5,157 cf Outflow = 0.14 cfs @ 12.87 hrs, Volume= 5,157 cf, Atten= 90%, Lag= 47.3 min Primary = 0.14 cfs @ 12.87 hrs, Volume= 5,157 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Peak Elev= 118.77' @ 12.87 hrs Surf.Area= 9,137 sf Storage= 2,068 cf Plug-Flow detention time= 126.0 min calculated for 5,157 cf(100% of inflow) Center-of-Mass det. time= 125.7 min ( 882.7 - 757.1 ) Volume Ihvert Avail.Storage Storage Description #1 118.30' 25,489 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 118.30 332 0 0 118.40 1,779 106 106 118.50 3,600 269 374 118.60 5,774 469 843 118.70 7,674 672 1,516 118.80 9,900 879 2,394 118.90 12,358 1,113 3,507 119.00 15,048 1,370 4,877 119.10 18,102 1,658 6,535 119.17 21,160 1,374 7,909 120.00 21,200 17,579 25,489 Device Routing Invert Outlet Devices ,. #1 Primary 118.30' 2.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.14 cfs @ 12.87 hrs HW=118.77' TW=100.00' (Dynamic Tailwater) t-1=Orifice/Grate (Orifice Controls 0.14 cfs @ 3.29 fps) `yv pr-technologyR Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 22 Summary for Pond 6P: rooftop detention Inflow Area = 5,877 sf,100.00% Impervious, Inflow Depth = 2.87" for 2 Year event Inflow = 0.40 cfs @ 12.08 hrs, Volume= 1,404 cf Outflow = 0.08 cfs @ 12.51 hrs, Volume= 1,404 cf, Atten= 80%, Lag= 25.4 min Primary = 0.08 cfs @ 12.51 hrs, Volume= 1,404 cf Routing by Dyn-Stor-Ind method, Time Span= O;DO-44.01 hrs, dt= 0.03 hrs M Peak Elev= 118.90' @ 12.51 hrs Surf.Area= 2,287 sf Storage= 355 cf Plug-Flow detention time= 25.0 min calculated for 1,404 cf(100% of inflow) Center-of-Mass det. time= 24.6 min ( 781.7- 757.1 ) Volume Invert Avail Storage Storage Description #1 118.30' 6,180 cf Custom Stage Data(Prismatic)Listed below (Recalc) e Elevation SUrf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 118.30 10 0 0 i 118.40 20 2 2 118.50 32 3 4 118.60 266 15 19 118.70 723 49 68 118.80 1,403 106 175 118.90 2,308 186 360 119.00 3,416 286 646 119.10 4,708 406 1,053 119.17 5,726 365 1,418 120.00 5,750 4,763 6,180 Device Routing Invert Outlet Devices #1 Primary 118.30' 2.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.08 cfs @ 12.51 hrs HW=118.90' TW=99.90' (Dynamic Tailwater) t1=0rifice/Grate (Orifice Controls 0.08 cfs @ 3.72 fps) May 25, 2017 To: Ashley Green-Salem Conservation Agent Peter Ogren -Hayes Engineering Re: Conservation Commission Conditioned Comments for Clarification, Revision and Conditional of Approval I & 6 Technology Way, Salem,MA 01970 Below please find Salem Conservation Commission comments, as Conditions of Approval of the development at 1 & 6 Technology Way, in Salem, MA 01970 associated with the proposed building expansion of Thermal Circuits, Parcel ID 07-0079-0 & 07- 0078-0. Specifically, the following items require clarification or revision as conditions of approval: 1. Rooftop attenuation is proposed in the design and included as an integral part of the stormwater management system. The Rooftop stormwater management pond is required to be added to the annual Operation and Maintenance, with yearly sweeping of any accumulated sediment or debris from the outlet areas. A maximum 2-inch orifice is to be constructed at the roof line, with an additional "bee hive" style grate or equal around the roof drain to reduce blockage. 2. Rooftop outlet and volumetric attenuation area to be provided with a detail in the application for future reference and confirmation during the Asbuilt for the Certificate of Compliance 3. Sizing documentation has been provided for an STC 900. Where is this to be located or is it for equivalent technology approval? 4. All existing utilities within the proposed work zone should be identified. both sewer and gas are proximate to the proposed water and should be confirmed prior to construction. Proposed Water is to be 10 feet from the sewer or sleeved accordingly. 5. TSS removal associated with the Roof Top Runoff is considered 80%. Revise calculations accordingly. 6. All outfalls to receive 80% TSS removal. Proprietary or Oil &Grit separator to be provided at the loading dock and DMH3. 7. 36" driveway culvert near the forebay and other existing stormwater infrastructure to be included with typical site O&M if not included under other approvals. 8. The HS36 narrative provides 77% removal. Revise calculations accordingly. 9. If new dumpster facilities are required, they should be located away from the wetland boundary and enclosed to limit trash migration. 10. Existing sewer along edge of building should be protected during foundation construction. S 11. Proposed grading along 'roadway' parking area should be provided. Additional spot shots warranted to avoid puddling at curblines. 12. Please depict WFAI &WFA2 as adjacent to work zone. 13. Cultec 4" Outlet invert not identified on plan set. Roof Drain invert not identified on plan set. 14. Soil testing to confirm recharge area is 2 feet above ESHW, including potential mounding, prior to installation of recharge units. Design engineer to modify approval as necessary. 15. Snow storage is prohibited in the 100 foot buffer zone. 16. Forebay pond volumes depicted are to be considered the minimum size per vertical foot. 17. Review pond weir Breadth vs Length as they may be transposed. 18. All outfalls to be outfitted with flared ends, or equal, to grade. 19. 18" VGC or SGC set in concrete required. 20. Utility crossing detail to be provided and implemented with 10 feet of sanitary sewer. 21. CB and 12" RCP on North Side of Building to be Abandoned? 22. Storm drainage proposed under the building inadvisable. Relocated 24" RCP 10 feet outside of building footprint. 23. Closed system calculation of"Not Accurate" to be clarified. Should you have any questions on the above comments, please feel free to contact me at your convenience. Gregory M. St. Louis, PE Salem Conservation Commission Chairman CC: Tom Devine- Salem Planner CITY OF SALEM CONSERVATION� COMMISSION Salem Conservation Commission 978-619-5685 Will hold a public hearing for a Notice of Intent for Tech Way Associates LLC c/o Anthony Klein, l Technology Way, Salem MA. Purpose of hearing is to discuss proposed construction of building addition and associated improvements at 1&6 Technology Way within an area subject to the Wetlands Protection Act MGL c131§40 and Salem's Wetlands Protection & Conservation Ordinance.Hearing will be held 5/11/17 at 6:30pm in City Hall Annex, 120 Washington St,3d floor conference room. Salem News publication date: May 4, 2017 A deposit check has been submitted from: Anthony Klein Technology Way Associates 1 Technology Way Salem, MA 01970 800-808-4328 � I OI Status Sheet Address: Tu L�a`( DEP #: Application Type: 01 Date Submitted: Contact Name: Phone: Proposed activity: �Vl . C(. ( / application Complete erect Fee Received abutters List Requested Received ,__Abutters Ad Sent Jegal Ad Confirmed -434fi'ne ,Added to Agenda Agenda to Applicant Agent Comments to Commission DEP Comments Hearing Opened: Continued: Site Visit: Abutters Notice Confirmed Permit Sent to Applicant and DEP Confirmation of Delivery Expiration date added to calendar Added to database Applicant Recorded OoC with Registry Preconstruction Meeting: Certificate of Compliance Sent to Applicant and DEP Confirmation of Delivery Applicant Recorded CoC with Registry Notes: HACON COMM\Administ tiw\project status shed\NOI status sheet 2012-12-27.doc CITY OF SALEM ASSESSOR'S CERTIFICATION OF ABUTTERS AND PROPERTY OWNERS BOARD/COMMISSION: Conservation Commission PROJECT SITE: 1&6 Technology Way 107-0078-0, 07-0079-0) DATE: 03/21//2017 DESCRIPTION OF REQUIREMENT: All abutters and any property owner within 100 feet of the property line of the land where the activity is proposed including if land is separated by a public or private street or a body of water and not unreasonably distant from the project site. This is to certify that the time of the last assessment for taxation made by the City of Salem, the names and addresses of those listed on the attached sheets are "abutters and property owners" (as defined by Wetlands Protection Act 310 CMR 10.05(4)(a)) to the parcel(s) of land listed above as the project site. Assessor's Signature: )ate: Number of initialed pages attached: Once Certified,Return to: Tom Devine, Department of Planning and Community Development ' N f D wee.. 19en mam U! :vaa.m Bubp O'er C✓�oewVW r� e� 10 coq w d�m�m Qw WYm w� � •w+a*�..ro uw Z grroat Dat t�610t CQ �tDeDt Q =acme �V N 9$q r ,1U f 0 880 -tBWfl PtlMDE on 03212011 at12.32 PM Parcel ID:07-0043-824 Parcel ID:07-0043-825 Parcel ID:07-0043-826 LOTTI EDWARD T 15 BRITTANIA CIRCLE CHEUNG TERESA W LOTTI CLAUDIA H SAXONISDONNArENGLISH 13 BRITTAN IA CIRCLE U 145B 8 BRITTANIA CIRCLE U144D 215 EDGEM ERE ROAD SALEM,MA 01970 SALEM,MA 01970 LYNN FIELD,MA 01940 Parcel ID 07-0043-827 Parcel ID:07-0043-828 Parcel ID: 07-0043-829 BARISH LORI B BURRELL STEPHEN M 19 BRITTANIA CIR U145C 6t9AQP0RfNA 10 BRITTANIA CIRCLE U146A SALEM,MA 01970 17 BRITTANIA CIR U-145D SALEM,MA 01970 SALEM, MAO 1970 ch I—5j-0p6065 , J305 �in� Parcel ID: 07-0043-830 Parcel ID:07-0043831 Parcel ID: 07-0043-632 JACOBSON HELEN RICKELS CHRISTOPHER W HORVITZ SHERRIL H 12 BRMANIA CIR 14 BRITTANIA CIRCLE U146C 16 BRITTANIA CIRCLE U1460 SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID: 07-0043-833 Parcel ID:07-0043834 Parcel ID:07-0043-635 SZWARC BERNARD M GROKHOTOV ALEKSEY TWISS REGINA L 23BRITTANIACIR U147A 21 BRITTANIACIRU147B 27 BRITTAN[A CIRCLE U 147C SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID:07-0043-836 Parcel ID:07-0043837 Parcel ID: 07-0043-838 MARQUIS LINDA E BARNES KEITH 25 BRITTANIA CIR U147D 18 BRITTANIA CIRCLE U148A 20 BRITTANIA CIRCLE U148B SALEM, MA 01970 SALEM, MA 01970 SALEM,MA 01970 C.o'')I , 'fiy1 a,-- a/X Parcel ID: 07-0043-839 Parcel ID:07-0043840 Parcel ID:07-0043-841 YOUNG STEPHEN D TREBBIN EILEEN A C RLTY TR YOUNG SARAH M 24 BRITTANIACIRU148D MAN DRACCH IA CHARLES 22BRITTANIACIRCLE U148C SALEM, MA 01970 21 CUSHMAN TERRACE SALEM,MA 01970 REVERE, MA 02151 Parcel ID: 07-0043.842 Parcel ID:07-0043843 Parcel ID: 07-0043-844 THOMSON CLIFFORD O CHAMPAGNE LINDA J LEVIT YURY/LEVIT VALERIA THOMSONANNE M 35 BRITTANIA CIR U149C LEVITALEXANDER 29 BRITTANIA CIR U149B SALEM, MA 01970 33 BRITTANIA CIRCLE U 149D SALEM,MA 01970 SALEM,MA 01970 Parcel ID:07-0043-845 Parcel ID:07-0043846 Parcel ID: 07-0043-847 J LEVINE MICHAEL MCCONATHY SANDRA W 26 BRITTANIA CIRCLE U150A 28 BRITTANIA CIRCLE U150B 71 PARK AVENUE SALEM, MA 01970 SALEM, MA 01970 EAST WAREHAM, MA 02538 -►^ten-1 �'n . Yl�}-an L-cv(L y s ,q Parcel ID: 07-0043-848 Parcel ID:07-0043849 Parcel ID: 07-0043-850 STAPLETON FAMILY BYSTRYAK ILYA SALUSTRI ANGELO STAPLETON NANCY M/WHALEN BYSTRYAK OLGA SALUSTRISILVA 32 BRITTANIA CIR U150-D 39 BRITTANIA CIRCLE U151A 37 BRITTANIA CIR U151-B SALEM, MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID: 07-0043-851 Parcel ID:07-0043852 Parcel ID:07-0043-853 LOVELAND DONALD H FULLER WAIN F CAPLAN HARRY LOVELAND ANN M FULLER ANNIE M CAPLAN DIANE G 43BRITTANIA CIR U151-C 41 BRITTANIACIRU151D 34BRITTANIACIRU152A SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 / V Parcel ID 07-0043-854 Parcel ID:07-0043-855 Parcel ID: 07-0043.856 TOWNSEND MARY L SHANANHAN CATHY M BRt6119EE� 36 BRITTANIA CIR U152B 38 BRITTANIA CIRCLE U152C 40 BRITTANIA CIRCLE U152D SALEM, MA 01970 SALEM, MA 01970 SALEM,MA 01970 /larnan , ib +hlee-r` Parcel ID: 07-0043-857 Parcel ID:07-0043-858 Parcel ID: 07-0043-859 FUSEGNI LEWISJ MANRY STEVEN W FALANGA RICHARD FUSEGENI FRANCES E - STRINGER GERTRUDE HANNAH FALANGA MARILYN W 47 BRITTANIA CIRCLE U153A 45 BRITTANIA CIR U1536 51BRITTANIA CIR U153C SALEM, MA 01970 SALEM, MA 01970 SALEM, MA 01970 Parcel ID: 07-0043-860 Parcel ID:07-0043-861 Parcel ID: 07-0043-862 BERGSTROM RICHARD D MUNRO ROBERT M MEHALL PHILIP S BERGSTROM PATRICIA R MUNRO CONSTANCE A MEHALL DARCI D 49 BRITTANIA CIRCLE U153 42 BRITTANIA CIRCLE U164A 44 BRITTANIA CIRCLE U154B SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID: 07-0043-863 Parcel ID:07-0043864 Parcel ID: 07-0043-865 LINDA J.HALL TRUST HEAPHY SANDRA M KLINE ANDREA HALL WILLIAM KIHALL 48 BRITTANIA CIRCLE U154D 55 BRITTANIA CIR U155A 46 BRITTANIA CIRCLE U 154C SALEM, MA 01970 SALEM,MA 01970 SALEM,MA 01970 Parcel ID 07-0043-866 Parcel 10:07-0043-867 Parcel ID:07-0043-868 ANDERSON JOHN A BIANCANIELLO CINCIA TAINER MEGAN ANDERSON MAUREEN 59 BRITTANIA CIRCLE U165C 57 BRITTANIA CIRCLE U155D 53 BRITTANIA CIR U155B . SALEM, MA 01970 SALEM, MA 01970 SALEM, MA 01970 Parcel ID: 07-0043-869 Parcel ID:07-0043870 Parcel ID: 07-0043-871 GRANT FAMILY TRUST OF EMERY LAURIEANNE RABINOVICH GREGORY C/O CHARLES L. GRANT 69 BRITTANIA CIRCLE U 1588 TOLOKUNSKY INETTA 10 CONVICT BAY LANE - SALEM, MA 01970 3 GOOD HOPE LANE U156C ST GEORGE,BERMUDA, GEOS SALEM,MA 01970 Parcel ID: 07-0043.872 Parcel ID:07-0043873 Parcel ID: 07-0043-874 CHRISTINE B.BARBERIS HAMBRO RENEE L QUIRK BRIAN BARBERIS CHRISTOPHER C HAMBRO JACK G QUIRK SEAN 1 GOOD HOPE LANE U156D 67 BRITTANIA CIR U 157 65 BRITTANIA CIR 157B SALEM,MA 01970 {� SALEM, MA 01970 SALEM,MA 01970 Parcel ID.07-00 75 Parcel ID:07-0043-876 Parcel ID: 07-0043-877 ORLOFF DANT E DROKER EILEEN RODRIGUEZ CHRISTINE ORLOFF DE ORLOFF GARY 5 GOODHOPE LANE U 157 63 BRITTANIA CIR U158A 7 GOOD IjIdPE LANE U157C SALEM, MA 01970 SALEM,MA 01970 SALEM A 01970 Parcel ID: 07-0043-878 Parcel ID:07-0043-879 Parcel ID: 07-0043-880 MYSLINSKI LEONARD SHRESTHAYALEENA DUSENBERRY THOMAS R MYSLINSKI E. 11 GOODHOPE LANE U158C DUSENBERRY DEBORAH L 61 BRITTANIA CIR U158B SALEM, MA 01970 9 GOOD HOPE LANE U158D SALEM,MA 01970 SALEM,MA 01970 Parcel ID. 07-0043-881 Parcel ID:07-0043-882 Parcel ID:07-0043-883 DEAN ELAINE S RUSSO PAUL CROCKER MARTHA H 2 GOODHOPE LANE U159A 8 GOODHOPE LANE U159C SALEM,MA 01970 NAMANi;kVr9 908nn ^ SALEM,MA 01970 Parcel ID: 07-0079-0 Parcel ID:07-0078-0 Parcel ID: 06-0007-0 KAK REALTY TRUST KAK1W5A&14tTRMT DRISCOLL BARBARA ET AL KELLOGG JOHN/KLEIN K 18 WALLACE ROAD 1 TECHNOLOGY WAY 1 TECHNOLOGY WAY LYNN, MA 01901 SALEM,MA 01970 SALEM, MA 01970 G`r�v, -s Parcel ID: 06-0011-0 Parcel ID:06-0012-0 Parcel ID: 06-0013-0 SALEM CONSERVATION COMM LYNN SAND&STONE T SALEM CITY OF C/O AGGREGATE INDUSTRIES MA 1715 BROADWAY P�'Bff�3 15 Fj o b inS D n Rd• LLL. SAUGUS,MA 01906 S;994970 7 4AA �V4 a-b c cL, V>'1 R Parcel 1D: 07-0001-0 Parcel ID:07-0043-801 Parcel ID: 07-0043-802 GI`1L ABDELGADIR ESAM Y DEVEREUX SHARON M BRACKEN KATHRYN 48 CLARK STREET 7 ADMIRALS LANE U139-A OLSON SUSAN SALEM, MA 01970 SALEM, MA 01970 5 ADMIRALS LANE 1398 SALEM,MA 01970 Parcel ID 07-0043-803 Parcel ID:07-0043-804 Parcel ID: 07-0043-805 DUNNIGAN CATHLEEN JANET C. LACK 1999 REV M DUNN IGAN GREGORY J LACK JANET TR 3 ADMIRALS LANE U139C 1 ADMIRALS LANE U1 39D 2 ADMIRALS LANE U140 SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID 07-0043-806 Parcel ID:07-0043-807 Parcel ID:07-0043-808 FREELOVE ANTHONY E GAETA RICHARD C BLASKOVICH PHILIP D FREELOVE DEBRA GAETA MARILYN R BLASKOVICH DIANE M 4 ADMIRALS LANE U140-B 6 ADMIRALS LANE U140C 8 ADMIRALS LANE 140D SALEM, MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID 07-0043-809 Parcel ID:07-0043-810 Parcel ID: 07-0043-811 HARB GEORGE FINE KENNETH M USMANOV NATALIA ISSA RAN DA A FINE ELLA E 14 ADM IRALS LANE U141 C 10 ADMIRALS LANE U141A 12 ADMIRALS LANE U141B SALEM,MA 01970 SALEM,MA 01970 SALEM, MA 01970 Parcel ID: 07-0043.812 Parcel ID:07-0043-813 Parcel ID: 07-0043.814 MUNROE STEPHEN J MARCY ALIZABETH 71 WHALERS LANE U142A 73 WHALERS LANE U142B 16 ADMIRALS LANE U141D SALEM, MA 01970 SALEM,MA 01970 SALEM, MA 01970 -3io vmr�, Os-coke— Parcel ID: 07-0043-815 Parcel ID:07-0043-816 Parcel ID: 07-0043-817 �Ft SARYTCHEV DMITRI BELTRAM JOYCE E vj�A e , 3 BRITTANIA CIRCLE U142C COLUCCIELLO 7 BRITTANIA CIRCLE U 143A SALEM, MA 01970 1 BRITTANIA CIR U142 SALEM,MA 01970 SALEM, MA 01970 Parcel ID: 07-0043-818 Parcel ID:07-0043.819 Parcel ID.07-0043-820 HARRINGTON DANIEL M FREEDMAN NICOLE J EMMONS KATHIE A HARRINGTON ANGELINA MCGUIRE TOBIAS W 9 BRITTANIA CIR U-143D 5 BRITTANIA CIR U143B 11 BRITTANIA CIR U143 SALEM,MA 01970 SALEM, MA 01970 SALEM, MA 01970 Parcel ID:07-0043-821 Parcel ID:07-0043-822 Parcel ID: 07-0043-823 ZAMAKIS MARIA STOLZ THEODORE O 2 BRITTANIA CIR U144A KOWALSKI JOANN C 6 BRITTANIA CIRCLE U144C SALEM,MA 01970 4 BRITTAN[A CIRCLE U144B SALEM,MA 01970 SALEM, MA 01970 Anne tf-R-- vn, V Parcel ID: 07-0043.864 Parcel ID:07-0043885 Parcel ID: 07-0043-886 WOODNORTH DAVID M SANTERRE JAMES W JR KREYCHMAN INNA WOODNORTH KAORI IDA SANTERRE MARILYN G CRUZ TOMAS 297 BAY DRIVE 10 GOODHOPE LANE U160A 14 GOOD HOPE LANE U1608 ITASCA, IL 60143 SALEM, MA 01970 SALEM,MA 01970 Parcel ID: 07-0043.867 Parcel ID:07-0043-888 Parcel ID:07-0051-0 ORLOV MICHAIL LERNER BORIS JOHN M INGEMI REALTY 16 GOOD HOPE LANE U 160 LERNER GALINA INGEMI J&L TRS SALEM,MA 01970 12 GOODHOPE LANE U160-D 381 HIGHLAND AVE SALEM, MA 01970 SALEM,MA 01970 Parcel ID:07-0060-0 Parcel ID:07-0062-0 Parcel ID: 07-0070-0 BARNES ROAD TRUST THE NORTH SHORE TENNIS& 96SWAMPSC ROAD,LLC INGEMI JOHN M ETALI TRS SQUASH CLUB INC ATTN:TH UMUN GROUP 383 HIGHLAND AVENUE 98 SWAMPSCOTT ROAD 600 NG AVENUE SALEM, MA 01970 SALEM, MA 01970 SAtEM,MA 01970 Parcel ID: 07-0070-801 Parcel ID:07-0070-802LZParcelID: 07-0070-803 JACQUELINES GOURMET MH LLC MH, LLC 96 SWAMPSCOTT RD U 1 96 SWAMPSCOTT RD U2 96 SWAMPSCOTT ROAD U3 SALEM, MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID: 07-0070-804 Parcel ID:07-0070-805 Parcel ID: 07-0070-806 KCT REALTY TRUST 5-96 SWAMPSCOTT ROAD LLC GROOM REALTY LLC TOBIN KEVIN/TOBIN 15 WYMON WAY 96 SWAMPSCOTT ROAD U6 LYNNFIELD,MA 01940 SALEM,MA 01970 BEVERLY,MA 01915 3'1 -b 2-eve- 4 ek Parcel ID 07-0070-807 Parcel ID: 07-0070-808 Parcel ID: 07-0070-809 EKSTROM DAVID R&J SWAMPSCOTT ROAD S&D&D LLC EKSTROM ELIZABETH L 43 NORMAN STREET 96 SWAMPSCOTT ROAD U9 16 HATHAWAY AVENUE MARBLEHEAD, MA 01945 SALEM,MA 01970 BEVERLY,MA 01915 Parcel ID: 07-0070$10 Parcel ID:07-0077-0 Parcel ID: 07-0082-0 SWAMPSCOTT ROAD ASSOC SALCO REALTY, LLC SEARS DEREK R 96 SWAMPSCOTT ROAD U10 3 TECHNOLOGY WAY SEARS RENEE MICHELLE SALEM,MA 01970 SALEM, MA 01970 51 CLARK STREET SALEM,MA 01970 Parcel ID: 07-0083-0 Parcel ID:07-0087-0 GOLDEN FRANK USB CAPITAL, LLC GOLDEN DEBORA L 4 TECHNOLOGY WAY 53 CLARK STREET SALEM, MA 01970 SALEM, MA 01970 V FrfeEdit .Fecord Gfavrgate Process: 'tJtrtitres Foots x Ctptirns Hetp"Status �� Indexed ByParcellD _ Card# ' Add�p Mods Del Save '9� HA FarRe# U7 004 875 k,_-f, _`_fid t:'o 1 1 t catrb .. . ._.. .. ..._.._...... - ...'�... .:._.. _ Move Next Account D =" -"- Current wnevr, Prior Owner +' actors/Taxes ' ` ��tc��1� 11355MODINALANE� $ac See 3##A Type�T; S#teat#2 $ Sec 2 Ott C dylTown PORTER RANCH SocSe `#I3 prevrnc !State CA Festal: 91326Account Typc ' C-�urabq�Cade' �' t ti � "' � parake6tll '. s � - $ MM/DD/YWY 4egal� erenc F283-23Yal '� �Iwrser?loettR di atet}ate 31" /��15 ©wnelLookupRUm6r 36962 ` `Sales ,,_ Exam bons 3.=v'�,`More Owners =' 'Othe Parties' S 1�4025 FQuicl � 1 ' Project File: SAL-0042A Applicant: Tech Way Associates LLC #1 Technology Way Salem, MA 01970 Notice of Intent Application Proposed Addition Thermal Circuits #1 & 6 Technology Way Salem, Massachusetts April 2017 1 ' 603 Salem Street Wakefield, MA 01880 Tel: (781) 246-2800 Nantucket, MA 02554 Fax: (781) 246-7596 Tel: (508) 228-7909 ' Hayes Engineering, Inc. II' ' CONTENTS NOTICE OF INTENT ' PROJECT DESCRIPTION THERMAL CIRCUITS ADDITION #1 &#6 TECHNOLOGY WAY SALEM, MASSACHUSETTS ' April 20, 2017 1 LIST OF PLANS AND DOCUMENTS Identifying Number/ Letter Title / Date tDOCUMENT A WPA Form 3- Notice of Intent and NOI Wetland Fee Transmittal Form — Proposed Addition, #1 Technology Way, Salem, MA (including USGS Locus Map, List of Abutters (March 2017), Abutter Notification letter, and Affidavit of Service). ' DOCUMENTIB Project Narrative, Thermal Circuits, #1 Technology Way Salem, MA; Hayes Engineering, Inc.; March 20, 2017. DOCUMENT C Stormwater Report, Proposed Addition, Thermal Circuits, #1 j ' Technology Way, Salem, MA; Hayes Engineering, Inc.; April 11, 2017, including associated Hayes Engineering, Inc. documents as follows: ' "Mitigative Drainage Analysis, Proposed Addition, Thermal Circuits, #1 Technology Way Salem, MA"; Hayes Engineering, Inc., April 2017; Stormwater Management Form, "Operation and ' Maintenance Plan" dated March 20, 2017, "Construction Pollution Prevention Plan and Erosion and Sedimentation Control" dated March 20, 2017, and Watershed Maps referenced herein). Cover Sheet, Thermal Circuits Addition, #1 Technology Way, Salem, Mass.; Hayes Engineering, Inc.; Scale: 1"= 100'; date: ' PLANS January 25, 2017, rev. 4/20/17 (Plan Sheet CS, Sheet 1 of 4). Existing Conditions, Thermal Circuits Addition, #1 Technology ' Way, Salem, Mass.; Hayes Engineering, Inc., Scale: 1"= 20'; date: January 25, 2017, rev. 4/20/17 (Plan Sheet EX, Sheet 2 of 4). 1 1 List of Plans and Documents, Thermal Circuits, Salem, MA April 20, 2017 Identifying Number/ Letter Title / Date ' Site Plan, Thermal Circuits Addition, #1 Technology Way, Salem, Mass.; Hayes Engineering, Inc.; Scale: 1"= 20'; date: January 25, 2017, rev. 4/20/17 (Plan Sheet SP, Sheet 3 of 4). ' PLANS (Continued) Detail Sheet, Thermal Circuits Addition, #1 Technology Way, Salem, Mass.; Hayes Engineering, Inc.; Scale: N.T.S.; date: ' January 25, 2017, rev. 4/20/17 (Plan Sheet DET, Sheet 4 of 4). Existing Watershed Map in Salem, Mass.; Hayes Engineering, ' Inc.; Scale: 1"= 60'; Date: April 11, 2017 (11" x 17", Contained in Stormwater Report). ' Proposed Watershed in Salem, Mass.; Hayes Engineering, Inc.; Scale: 1"= 60'; Date: April 11, 2017 (11" x 17", Contained in Stormwater Report). 1 I, ' 2 1 Massachusetts Department of Environmental Protection Pr.ovidid by MassDEP:— — i ' Bureau of Resource Protection - Wetlands 1 MassDEP File Number WPA Form 3 - Notice of Intent ILDocument Transaction_Number ' Massachusetts Wetlands Protections Act M.G.L. c. 131, §40 Salem Av�b SAk f^- W2k%Av1dcS City/Town Important: When filling out A. General Information 1 forms on the computer, use 1. Project Location (Note: electronic filers will click on button to locate project site): only the tab key to move your 1 &6 Technology Way Salem 01970 cursor-do not use the return a. Street Address b.City/Town c.Zip Code key. 42d 29m 36s N 70d 56m 30s W Latitude and Longitude: Yf(� d. Latitude e. Longitude ' Map 7 Lots 78 & 79 f.Assessors Map/Plat Number g. Parcel/Lot Number 2. Applicant: ' a. First Name b.Last Name Note: Tech Way Associates LLC c/o Anthony Klein ' Before a Organization completing this form consult 1 Technology Way your local d. Street Address ' Conservation Salem MA 01970 Commission e. City/Town f.Stale g.Zip Code regarding any municipal bylaw (800) 808-4328 (978) 741-3420 klein@thermalcircuits.com or ordinance. h. Phone Number i. Fax Number j. Email Address 3. Property owner(required if different from applicant): ❑ Check if more than one owner ' a. First Name b. Last Name KAK Realty Trust c/o Thermal Circuits Anthony A. Klein Trustee c.Organization ' 1 Technology Way d. Street Address Salem MA 01970 e.City/Town f.State g.Zip Code (800) 808-4328 (978) 741-3420 klein@thermalcircuits.com h. Phone Number i. Fax Number j.Email address 4. Representative (if any): Elizabeth Wallis/ Peter J. Ogren a. First Name b. Last Name ' Hayes Engineering Inc. c.Company 603 Salem Street d.Street Address ' Wakefield MA 01880 e. City/Town f.State g.Zip Code _(781)246-2800 (781)246-7596 Iwallis@hayeseng.com pogren@hayeseng.com 1 h. Phone Number i. Fax Number j. Email address 5. Total WPA Fee Paid (from NOI Wetland Fee Transmittal Form): 1 $1,050.00 $512.50 $537.50 a.Total Fee Paid b. State Fee Paid c.City/Town Fee Paid ' wpaform3.doc•rev.6/28/2016 Page 1 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection -Wetlands MassDEP File Number WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem City/Town A. General Information (continued) ' 6. General Project Description: The applicant proposes to construct an addition to the existing building with associated stormwater BMPs, reconfigurations of existing parking areas, road,and utilities, and other site work as shown on the accompanying plans and as described in the attached project narrative. ' 7a. Project Type Checklist: (Limited Project Types see Section A. 7b.) 1. ❑ Single Family Home 2. ❑ Residential Subdivision ' 3. ® Commercial/Industrial 4. ❑ Dock/Pier 5. ❑ Utilities 6. ❑ Coastal engineering Structure ' 7. ❑ Agriculture (e.g., cranberries, forestry) 8. ❑ Transportation 9. ❑ Other 7b. Is any portion of the proposed activity eligible to be treated as a limited project (including Ecological Restoration Limited Project) subject to 310 CMR 10.24 (coastal) or 310 CMR 10.53 (inland)? ' 1. ❑ Yes Z No If yes, describe which limited project applies to this project. (See 310 CMR 10.24 and 10.53 for a complete list and description of limited project types) 2. Limited Project Type ' If the proposed activity is eligible to be treated as an Ecological Restoration Limited Project(310 CMR10.24(8), 310 CMR 10.53(4)), complete and attach Appendix A: Ecological Restoration Limited ' Project Checklist and Signed Certification. 8. Property recorded at the Registry of Deeds for: ' Essex south 66197 a.County b.Certificate#(if registered land) 86501 499 74004 394 ' B. Buffer Zone & Resource Area Impacts (temporary & permanent) 1. Z Buffer Zone Only—Check if the project is located only in the Buffer Zone of a Bordering ' Vegetated Wetland, Inland Bank, or Coastal Resource Area. 2. ❑ Inland Resource Areas (see 310 CMR 10.54-10.58, if not applicable, go to Section B.3, Coastal Resource Areas). Check all that apply below. Attach narrative and any supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location. wpaform3.doc•rev.612 812 01 6 Page 2 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands ' Ll MassDEP File Number WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem City/Town B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont'd) Resource Area Size of Proposed Alteration Proposed Replacement(if any) ' For all projects a. ElBank 1. linear feet - 2. linear feet affecting other b. ❑ Bordering Vegetated Resource Areas, Wetland 1.square feet 2.square feet please attach a narrative c. ❑ Land Under explaining how 1.square feet 2.square feet the resource Waterbodies and area was Waterways 3.cubic yards dredged delineated. Resource Area Size of Proposed Alteration Proposed Replacement(if any) d. ❑ Bordering Land ' Subject to Flooding 1.square feet 2.square feet 3.cubic feet of flood storage lost 4.cubic feet replaced e. ❑ Isolated Land ' Subject to Flooding 1.square feet 2.cubic feet of flood storage lost 3.cubic feet replaced ' f. ❑ Riverfront Area 1. Name of Waterway(if available) -specify coastal or inland 2. Width of Riverfront Area (check one): ❑ 25 ft. - Designated Densely Developed Areas only ' ❑ 100 ft. - New agricultural projects only ❑ 200 ft. -All other projects ' 3. Total area of Riverfront Area on the site of the proposed project: square feet 4. Proposed alteration of the Riverfront Area: ' a.total square feet b.square feet within 100 ft. c.square feet between 100 ft.and 200 ft. ' 5. Has an alternatives analysis been done and is it attached to this NOI? ❑ Yes❑ No 6.Was the lot where the activity is proposed created prior to August 1, 1996? ❑ Yes❑ No 3. ❑ Coastal Resource Areas: (See 310 CMR 10.25-10.35) Note: for coastal riverfront areas, please complete Section B.2.f. above. i ' wpaform3.doc•rev.6/28/2016 Page 3 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands Ll MassDEP File Number WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem '., CityfTown B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont'd) Check all that apply below. Attach narrative and supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location. ' Online Users: Include your Resource Area Size of Proposed Alteration Proposed Replacement(if any) document ' transaction number a. E] Designated Port Areas Indicate size under Land Under the Ocean, below (provided on your receipt page) b. ❑ Land Under the Ocean with all 1.square feet ' supplementary information you 2.cubic yards dredged submit to the Department. c. ❑ Barrier Beach Indicate size under Coastal Beaches and/or Coastal Dunes below ' d. ❑ Coastal Beaches 1.square feet 2.cubic yards beach nourishment ' e. ❑ Coastal Dunes 1.square feet 2.cubic yards dune nourishment Size of Proposed Alteration Proposed Replacement(if any) ' f. ❑ Coastal Banks 1, linear feet g. ❑ Rocky Intertidal Shores 1.square feet ' h. ❑ Salt Marshes 1.square feet 2.sq ft restoration, rehab.,creation i. ❑ Land Under Salt ' Ponds 1.square feet 2.cubic yards dredged ' j. ❑ Land Containing Shellfish 1.square feet k. ❑ Fish Runs Indicate size under Coastal Banks, inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above ' 1.cubic yards dredged I. ❑ Land Subject to Coastal Storm Flowage 1.square feet ' 4. ❑ Restoration/Enhancement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please enter the additional amount here. a.square feet of BVW b.square feet of Salt Marsh 5. ❑ Project Involves Stream Crossings a. number of new stream crossings b. number of replacement stream crossings ' wpaform3.doc•rev.6/28/2016 Page 4 of 9 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection -Wetlands MassDEP File Number WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem City/Town C. Other Applicable Standards and Requirements ❑ This is a proposal for an Ecological Restoration Limited Project. Skip Section C and complete Appendix A: Ecological Restoration Limited Project Checklists — Required Actions (310 CMR 10.11). ' Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review ' 1. Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State-Listed Rare Wetland Wildlife published by the Natural Heritage and Endangered Species Program (NHESP)9 To view habitat maps, see the Massachusetts Natural Heritage Atlas or go to htto://maos.massois.state.ma.us/PRI EST HAB/viewer.htm. a. ❑ Yes ® No If yes, include proof of mailing or hand delivery of NOI to: Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife MassGIS NHESP 1 Rabbit Hill Road ' online mapping Westborough, MA 01581 ' If yes, the project is also subject to Massachusetts Endangered Species Act(MESA) review(321 CMR 10.18). To qualify for a streamlined, 30-day, MESA/Wetlands Protection Act review, please complete Section CA.c, and include requested materials with this Notice of Intent(NOI); OR complete Section C.2.f, if applicable. If MESA supplemental information is not included with the NOI, ' by completing Section 1 of this form, the NHESP will require a separate MESA filing which may take up to 90 days to review(unless noted exceptions in Section 2 apply, see below). ' c. Submit Supplemental Information for Endangered Species Review' 1. ❑ Percentage/acreage of property to be altered: (a)within wetland Resource Area percentage/acreage (b)outside Resource Area percentage/acreage ' 2. ❑ Assessor's Map or right-of-way plan of site ' 2. ❑ Project plans for entire project site, including wetland resource areas and areas outside of wetlands jurisdiction, showing existing and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work " ' (a)❑ Project description (including description of impacts outside of wetland resource area & bufferzone) (b) ❑ Photographs representative of the site Some projects not in Estimated Habitat may be located in Priority Habitat, and require NHESP review(see ' hfp://www.mass.ciov/eea/agencies/dfg/dfw/natural-heritage/regulatory-review/). Priority Habitat includes habitat for state-listed plants and strictly upland species not protected by the Wetlands Protection Act. " MESA projects may not be segmented (321 CMR 10.16).The applicant must disclose full development plans even if such plans are ' not required as part of the Notice of Intent process. wpaform3.doc•rev.6/28/2016 Page 5 of 9 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection - Wetlands , MassDEP File Number WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem City/Town C. Other Applicable Standards and Requirements (cont'd) ' (c)❑ MESA filing fee (fee information available at http://www.mass.00v/dfwele/dfw/nhesp/regulatory review/mesa/mesa fee schedule.htm). 1 Make check payable to"Commonwealth of Massachusetts- NHESP" and mail to NHESP at above address Projects altering 10 or more acres of land, also submit., (d)❑ Vegetation cover type map of site ' (e)❑ Project plans showing Priority & Estimated Habitat boundaries (f) OR Check One of the Following 1. ❑ Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, ' http://www.mass.gov/dfwele/dfw/nhesp/regulatory review/mesa/mesa exemptions.htm; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. ❑ Separate MESA review ongoing. a. NHESP Tracking# b. Date submitted to NHESP 3. ❑ Separate MESA review completed. ' Include copy of NHESP"no Take"determination or valid Conservation & Management Permit with approved plan. 3. For coastal projects only, is any portion of the proposed project located below the mean high water ' line or in a fish run? a. ® Not applicable—project is in inland resource area only b. ❑ Yes ❑ No ' If yes, include proof of mailing, hand delivery, or electronic delivery of NOI to either: South Shore-Cohasset to Rhode Island border, and North Shore- Hull to New Hampshire border: ' the Cape& Islands: Division of Marine Fisheries- Division of Marine Fisheries- Southeast Marine Fisheries Station North Shore Office ' Attn: Environmental Reviewer Attn: Environmental Reviewer 1213 Purchase Street—3rd Floor 30 Emerson Avenue New Bedford, MA 02740-6694 Gloucester, MA 01930 Email: DMF.EnvReview-South(a).state.ma.us Email: DMF.EnvReview-North(c)state.ma.us Also if yes, the project may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional Office. ' wpaform3.doc•rev.6/28/2016 Page 6 of 9 Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection -Wetlands MassDEP File Number III WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem ' Citylrown C. Other Applicable Standards and Requirements (cont'd) ' 4. Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? Online users: a. El Yes E No If yes, provide name of ACEC (see instructions to WPA Form 3 or MassDEP ' Include your Website for ACEC locations). Note: electronic filers click on Website. document transaction b.ACEC number ' (provided on your 5. Is any portion of the proposed project within an area designated as an Outstanding Resource Water receipt page) (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00?. with all supplementary a. ❑ Yes E No information you ' submit to the 6. Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Department. Restriction Act(M.G.L. c. 131, §40A)or the Coastal Wetlands Restriction Act (M.G.L. c. 130, § 105)? a. ❑ Yes E No 7. Is this project subject to provisions of the MassDEP Stormwater Management Standards? a. E Yes. Attach a copy of the Stormwater Report as required by the Stormwater Management ' Standards per 310 CMR 10.05(6)(k)-(q) and check if: 1. ❑ Applying for Low Impact Development(LID) site design credits (as described in Stormwater Management Handbook Vol. 2, Chapter 3) ' 2. E A portion of the site constitutes redevelopment 3. E Proprietary BMPs are included in the Stormwater Management System. ' b. ❑ No. Check why the project is exempt: ' 1.❑ Single-family house 2. ❑ Emergency road repair ' 3. ❑ Small Residential Subdivision (less than or equal to 4 single-family houses or less than or equal to 4 units in multi-family housing project)with no discharge to Critical Areas. D. Additional Information ' ❑ This is a proposal for an Ecological Restoration Limited Project. Skip Section D and complete Appendix A: Ecological Restoration Notice of Intent—Minimum Required Documents (310 CMR ' 10.12). Applicants must include the following with this Notice of Intent(NOI). See instructions for details. ' Online Users: Attach the document transaction number(provided on your receipt page) for any of the following information you submit to the Department. 1. 10 USGS or other map of the area (along with a narrative description, if necessary) containing ' sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) ' 2. E Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. ' wpaform3.doc•rev.6/28/2016 Page 7 of 9 Massachusetts Department of Environmental Protection Provided by MassDE 4 Bureau of Resource Protection -Wetlands MassDEP File Number WPA Form 3 — Notice of Intent ' Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Document Transaction Number Salem CityfFown D. Additional Information (cont'd) 3. ® Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s), Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4. ® List the titles and dates for all plans and other materials submitted with this NOI. Refer to attached document titled "Contents/List of Plans and Documents"for titles and dates of submitted materials. Hayes Engineering Inc. Peter J. Ogren, P.E. ' b.Prepared By c.Signed and Stamped by d.Final Revision Date e.Scale ' f.Additional Plan or Document Title g.Date 5. ❑ If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.❑ Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7. ❑ Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. ' 8. ® Attach NOI Wetland Fee Transmittal Form 9. ® Attach Stormwater Report, if needed. ' E. Fees ' 1. ❑ Fee Exempt: No filing fee shall be assessed for projects of any city,town, county, or district of the Commonwealth,federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. ' Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form)to confirm fee payment: ' 2.Municipal Check Number 3.Check dat /i7" 4.State Check Number 9� 55.Check 1 ec�.. wti1J PTSSbC:-l� GS � L-L—C- ' 6.Payor name on check:First N me 7.Payor name on check:Last Name wpaform3.doc•rev.6/28/2016 Page 8 of 9 I� ' Massachusetts Department of Environmental Protection Provided by MassDEP: 'w= Bureau of Resource Protection -Wetlands MassDEP File Number n WPA Form 3 - Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem City/rown ' F. Signatures and Submittal Requirements 1 hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to ' the requirements of M.G.L. c. 131, §40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested)to all abutters within 100 feet of the property line of the pro'act location. gn 'r Appli / 2.Date o oa` iy ' ig turQ - ro caner(i diffe ) ` 4.Dat Id ^ /7 5.s ure of Representative(if any) 6 ate For Conservation Commission: Two copies of the completed Notice of Intent(Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment,to the Conservation Commission by certified mail or hand delivery. For MassDEP: ' One copy of the completed Notice of Intent(Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office(see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the"yes'box in any part of Section C, Item 3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. wpaformIdoc•rev.6/28/2016 Page 9 of 9 HAYES ENGINEERING, INC. 603 SALEM STREET CIVIL ENGINEERING& G`y � WAKEFIELD, MA 01880 LAND SURVEYORS """"'"" (781)246-2800 • �� cs • � .r�ice_ "+ /et',''"',*,,... S.•,T•�J-+L+� o r, !, LOCUS ..+ �� p . t� ,. •ice ". "` �� '��' fl_ Y•E ^s ' y�r „+ ++r �i.," �I'' �} i� '! Scale_�� 09J2 Ir�i 4��- * �"y / —,�,•, �,� .. � . .a 247.230.22m 916 309 22 UNITED STATES GEOLOGICAL SURVEY MAP LOCUS MAP N 25K MASSGIS QUADRANGLE #1 &#6 TECHNOLOGY WAY T (Information from "Oliver" online mapping) SALEM, MASSACHUSETTS ' Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands NOI Wetland Fee `transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 ' Important:When A. Applicant Information filling out forms on the computer, 1. Location of Project: use only the tab key to move your 1 & 6 Technology Way Salem cursor-do not a. Street Address use the return b.City/Town ' key. c.Check number d.Fee amount 2. Applicant Mailing Address: ' rein a. First Name b.Last Name Tech Way Associates LLC c/o Anthony Klein t c.Organization 1 Technology Way d. Mailing Address ' Salem MA 01970 e.City/Town I.State g.Zip Code (800) 808-4328 (978) 741-3420 Hein @thermalcircuits,com ' h. Phone Number i.Fax Number j.Email Address 3. Property Owner(if different): a. First Name b.Last Name KAK Realty Trust c/o Thermal Circuits Anthony A. Klein Trustee c.Organization ' 1 Technology Way d.Mailing Address Salem MA 01970 e. CityfTown f.State g.Zip Code I ' (800) 808-4328 (978) 741-3420 klein@thermalcircuits.com h. Phone Number i. Fax Number j. Email Address To calculate B. Fees ' filing fees, refer to the category fee list and Fee should be calculated using the following process &worksheet. Please see Instructions before examples in the filling out worksheet. instructions for filling out WPA Step 1/Type of Activity: Describe each type of activity that will occur in wetland resource area and buffer zone. Form 3(Notice of Intent). Step 2/Number of Activities: Identify the number of each type of activity. Step 3/Individual Activity Fee: Identify each activity fee from the six project categories listed in the instructions. Step 4/Subtotal Activity Fee: Multiply the number of activities (identified in Step 2)times the fee per category ' (identified in Step 3)to reach a subtotal fee amount. Note: If any of these activities are in a Riverfront Area in addition to another Resource Area or the Buffer Zone, the fee per activity should be multiplied by 1.5 and then added to the subtotal amount. L ' Step 5/Total Project Fee: Determine the total project fee by adding the subtotal amounts from Step 4. Step 6/Fee Payments: To calculate the state share of the fee, divide the total fee in half and subtract$12.50.To calculate the city/town share of the fee, divide the total fee in half and add$12.50. ' noifeetf.doc•Wetland Fee Transmittal Farm•rev.10111 - Page 1 of 2 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands NOI Wetland Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Fees (continued) Step 11Type of Activity Step 2/Number Step Step 4/Subtotal Activity ' of Activities 3/Individual Fee Activity Fee Addition to industrial building in 1 $1,050.00 $1,050.00 bufferzone. ' Step 5/Total Project Fee: $1,050.00 ' Step 6/Fee Payments: Total Project Fee: $1,050.00 ' a.Total Fee from step 5 State share of filing Fee: $512.50 b. 1/2 Total Fee less$12.50 ' City/Town share of filling Fee: $537.50 c. 1/2 Total Fee plus$12.50 C. Submittal Requirements ' a.) Complete pages 1 and 2 and send with a check or money order for the state share of the fee, payable to the Commonwealth of Massachusetts. Department of Environmental Protection Box 4062 Boston, MA 02211 b.) To the Conservation Commission: Send the Notice of Intent or Abbreviated Notice of Intent;a copy of this form;and the city/town fee payment. To MassDEP Regional Office(see Instructions): Send a copy of the Notice of Intent or Abbreviated Notice of Intent;a copy of this form; and a copy of the state fee payment. (E-filers of Notices of Intent may submit these electronically.) ' noifeetf.doe•Wetland Fee Transmittal Form•rev.10/11 Page 2 of 2 i : i _ 1135 TECH WAY ASSOCIATES LLC - 1 TECHNOLOGY WAY ' SALEM,MA 01970 533--70122110 DATE / �/ PAY / D TO THE �, 'ORDER OF °J pp/ DOLLARS LJ G -- W®East Boston Savings Bank `EAST BOSTON,MA 02128 ' FOR i (/ �O ? �'��° u'0❑ 13511'• 1: 7 1009467u■ 1136 TECH WAY ASSOCIATES LLC 1 TECHNOLOGY WAY 53-70122110 SALEM, MA 01970 ' DATE 1OTHAY.-E $ ORDER OF �w DOLLARS 8 � P W®East Boston Savings Bank S EAST BOSTON,MA 0212 ,FOR 7 �///� _ 11-00 113 u■ . 1: 21 L 701201: 7a, L009►.67u' 1134 TECH WAY ASSOCIATES LLCa ' '1 TECHNOLOGY WAY 53-7012-2110. SALEM,MA 01970 _ y DATE '�' ��// el TO THE ,try $ 0,PAY / DOLLARS W "East Boston Savings Bank S EA T BOSTON,MA 02128 ' FOR �G� - - u'001 i34u■ 4 21 i❑ 7❑ 1 201: 74 /i009467n• i AFFIDAVIT OF SERVICE Under the Massachusetts Wetlands Protection Act (to be submitted to the Massachusetts Department of Environmental Protection and the Conservation Commission when filing a Notice of Intent) ' I, hereby certify under the pains and penalties of perjury that on "r\ I gave notification to abutters in compliance with the second paragraph of Massachusetts General Laws, Chapter 131, Section 40, and the DEP Guide to Abutter Notification dated April 8, 1994, in connection with the following matter: Construction of an addition to manufacturing building. ' A Notice of Intent filed under the Massachusetts Wetlands Protection Act by Tech Way Associates LLC with the Salem Conservation Commission on ' ,-k` a` k % for property located at Thermal Circuits, #1 &#6 Technology Way in Salem (Assessor's map 7, Lot 78 & 79). The form of the notification, and a list of the abutters to whom it was given and 1 their addresses are attached to this Affidavit of Service. Signature &Title Dat 1 CITY OF SALEM CONSERVATION COMMISSION NOTICE OF PUBLIC HEARING NOTIFICATION TO ABUTTERS 1 Under the Massachusetts Wetlands Protection Act & the City of Salem Wetlands Protection Ordinance ' A Public Hearing will be held at the City Hall Annex, #120 Washington Street, 3rd Floor, Salem, MA 01970 at 6:30 pm on May 11 2017 (call the conservation office to confirm date of hearing) A. The name of the applicant is: Tech Wap Associates LLC. B. The applicant has filed a Notice of Intent with the Conservation Commission for the municipality ' of Salem seeking permission to work within an Area Subject to Protection Under the Wetlands Protection Act (General Laws Chapter 131, Section 40) and the City of Salem Wetlands Protection Ordinance. ' C. The address of the lot where the activity is proposed is: Thermal Circuits. #1 & #6 Technology Way (Assessor's Map 7, Lot 78 & 79). D. The activity proposed on the site: Construction of addition and parking area within 100 feet of wetlands. E. Copies of the Notice of Intent may be examined/obtained at: Haves Engineering, Inc., 603 Salem Street, Wakefield, MA 01880 between the hours of 8 a.m. and 4:30PM on the following days of the week: Monday through Friday by ppointment only ' For more information, call: (781) 246-2800. *F. Information regarding the data, time and place of the public hearing may be obtained ' from: Salem Conservation Commission(978) 619-5682 (office hours vary This is a joint hearing under the requirements of G.L. Ch 131 Section 40, as amended, and ' the Salem Wetlands Protection Ordinance and Regulations. Plans are available at the Department of Planning and Community Development at the City Hall Annex 120 Washington Street Salem, MA from 8 am- 4 pm Monday — Wednesday, 8 am -7 pm on ' Thursday, and 8 am- 12 pm on Friday. For information call the Conservation Agent at (978) 619-5682. *NOTE: Notice of the public hearing, including its date, time and place, will be published at least five (5) days in advance in the Salem News. *NOTE: Notice of the public hearing, including its date, time and place, will be posted in the ' City or Town Hall not less than forty-eight(48) hours in advance. NOTE: You also may contact your local Conservation Commission or the nearest Department of Environmental Protection Regional Office for more information about this application or the Wetlands Protection Act. To contact the DEP, call: Northeast Region: 978- 694-3200 1 1 ' CITY OF SALEM ASSESSOR'S CERTIFICATION OF ABUTTERS AND PROPERTY OWNERS BOARD/COMMISSION• Conservation Commission ' PROJECT SITE: 1&6 Technology Way {07-0078-0, 07-0079-01 DATE: 03/21//2017 DESCRIPTION OF REQUIREMENT: All abutters and any property owner ' within 100 feet of the property line of the land where the activity is proposed including if land is separated by a public or private street or a body of water and not unreasonably distant from the project site. This is to certify that the time of the last assessment for taxation made by the City of Salem, the names and addresses of those listed on the attached sheets are"abutters and property owners"(as defined by Wetlands Protection Act 310 CMR 10.05(4)(a))to the parcel(s)of land listed above as the project site. Assessor's Signature: Date• a- Hl. Number of initialed pages attached: L� Once Certified,Return to: Tom Devine,Department of Planning and Community Development N FAE" 40 F� N N� ' 10 oqo qusw.., JW _ o r:our game N f9 Z A N CST Y �Ro � '9U 10 0 tmft Pm antti IMV et14:9IPM 1 � Parcel ID.07-0043-824 Parcel ID:07.0043-825 Parcel ID:07-0043-026 LOTTI EDWARD T 15 BRI7TAN[A CIRCLE CHEUNG TERESA W LOTTI CLAUDIA H SAXONISDONNA+ENGLISH 13 BRITTANIA CIRCLE U 1468 8 BRITTANIA CIRCLE U144D 215 EDGEMERE ROAD SALEM,MA 01970 SALEM,MA 01970 - LYNNFIELD,MA 01940 ' Parcel ID:07-0043-827 Parcel ID:07-0043-828 Parcel ID:07-0043-829 GARISH LORIS GARROMBEIRRAEL BURRELL STEPHEN M 19 BRITTANIA CIR U145C W*90041114A 10 BRITTAN IA CIRCLE U 146A SALEM,MA 01970 17 BRITTANLA CIR U-145D SALEM,MA 01970 - SALEM, MA 01970 h(;5J-0ppA65 , 1105LfllI'^ Parcel ID: 07-0043-830 Parcel ID:07-0043.831 Parcel ID:07-0043-832 ' JACOBSON HELEN RICKELS CHRISTOPHER W HORVITZ SHERRILH 12 BRITTANIA CIR 14 BRITTANIA CIRCLE U1460 16 BRITTANIA CIRCLE U146D SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 ' Parcel ID.07-0043.833 Parcel ID:07-0043-834 Parcel ID:07-0043-835 SZWARC BERNARD M GROKHOTOV ALEKSEY TWISS REGINA L 23BRMANIACIRU147A 21 BRITTANIACIRU1478 27 BRITTAN IA CIRCLE U 147C SALEM,MA 01970 - SALEM, MA 01970 SALEM,MA 01970 ' Parcel ID.07-0043-836 - Parcel ID:07-0043-837 Parcel ID:07-0043-838 BEFROPERAIANA MARQUIS LINDA E BARNES KEITH 25 BRITTANIA CIR U1470 18 BRITTANIA CIRCLE U148A 20 BRITTAN IA CIRCLE U 148B SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 ' C6�")I . -rm 04han Parcel ID:07-0043-839 Pa reel ID:07-0043-840 Parcel ID:07-0043-841 YOUNG STEPHEN D TREBBIN EILEEN A C RLTY TR YOUNG SARAH M 24 BRITTANIA CIR U148D MANDRACCHIA CHARLES 22 BRITTAN IA CIRCLE U 140C SALEM,MA 01970 21 CUSHMAN TERRACE SALEM,MA 01970 REVERE, MA02151 Parcel ID:07-0043.842 Parcel ID:07-0043-843 Parcel ID:07-0043.844 THOMSON CLIFFORD O CHAMPAGNE LINDA J LEVIT YURY/LEVIT VALERIA THOMSONANNE M 35 BRITTANIA CIR U149C LEVITALEXANDER 29BRITTANIACIR U149B SALEM, MA 01970 33 BRITTANIA CIRCLE U149D ' SALEM,MA 01970 SALEM,MA 01970 Parcel ID:07-0043-U5 Parcel ID:07-004M46 Parcel ID:07-0043-847 ' &TRowwwommi LEVINE MICHAEL MOCONATHY SANDRA W 26BRITTANIACIRCLE U150A 28BRITTANIACIRCLE U150B 71 PARK AVENUE SALEM,MA 01970 SALEM,MA 01970 EAST WAREHAM. MA 02538 LcyL Y s r9 Parcel ID:07-0043-848 Parcel ID:07-0043849 Parcel ID.07-0043-850 STAPLETON FAMILY BYSTRYAK ILYA SALUSTRI ANGELO STAPLETON NANCY M/WHALEN BYSTRYAK OLGA SALUSTRI SILVA ' 32 BRITTANIA CIR U150-D 39 BRITTANIA CIRCLE U151A 37BRITTANIACIR U151-B SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 ' Parcel Ia.07-0043-851 Parcel ID:07-0043852 Parcel 10: 07-0043-853 LOVELAND DONALD H FULLER WAIN F CAPLAN HARRY LOVELAN D ANN M FU LLER ANNI E M CAPLAN DIANE G 43BRITTANIACIR U151-C 41 BRITTANIACIRU151D 34BRITTANIACIRU152A SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 / ' V Parcel IR 07-0043-854 Parcel ID:07-0043-855 Parcel IR 07-0043-856 ' TOWNSEND MARY L SHANANHAN CATHY M BRN%ffEY=8A#A4.- 36BRITTANIA CIR U152B 38BRITTANIACIRCLE U152C 40 BRITTAN IA CIRCLE U 152D SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 ala v an . �a✓i t� 14+-4hLe-e.r-. ' Parcel ID.07-0043-057 Parcel ID:07-0043-858 Parcel ID.07-0043-859 FUSEGNI LEWIS J MANRY STEVEN W FALANGA RICHARD A FUSEGENI FRANCES E STRINGER GERTRUDE HANNAH FALANGA MARILYN W I ' 47 BRITTANIA CIRCLE U153A 45 BRITTANIA CIR U1536 51 BRITTANIACIR U153C SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 Parcel ID 07-0043-860 Parcel ID:07-0043-861 Parcel ID:07-0043-862 ' BERGSTROM RICHARD D MUNRO ROBERT M MEHALL PHILIP S BERGSTROM PATRICIA R MUNRO CONSTANCE A MEHALL DARCI D 49BRITTANIACIRCLE U153 42 BRITTANIA CIRCLE U154A 44 BRITTANIA CIRCLE U154B SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 Parcel ID: 07-0043-863 Parcel ID:07-0043864 Parcel IR 07-0043-865 LINDA J.HALL TRUST HEAPHY SANDRA M KLINE ANDREA ' HALL WILLIAM V MALL 48 BRITTAN IA CIRCLE U164D 55 BRITTAN IA CIR U155A 46 BRITTAN[A CIRCLE U 154 SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 Parcel ID.*07-0043-866 Parcel ID:07-0043-867 Parcel ID.07-0043.868 ANDERSON JOHN A BIANCANIELLO CINCIA TAINER MEGAN ANDERSON MAUREEN 59BRITTANIACIRCLE U155C 57 BRITTANIA CIRCLE U155D 53 BRITTANIA CIR U155B SALEM, MA 01970 SALEM,MA 01970 1 SALEM,MA 01970 Parcel ID:07-0043-869 Parcel ID:07-0043.870 Parcel ID:07-0043-871 GRANT FAMILY TRUST OF EMERY LAURIEANNE RABINOVICH GREGORY ' C/O CHARLES L GRANT 69 BRITTANIA CIRCLE U 158B TOLOKUNSKY INETTA 10 CONVICT BAY LANE SALEM, MA 01970 3 GOOD HOPE LANE U156C ST GEORGE,BERMUDA,GE05 SALEM,MA 01970 Parcel ID: 07-0043-872 Parcel ID:07.0043-873 Parcel IR 07-0043-674 CHRISTINE B.BARBERIS HAMBRO RENEE L QUIRK BRIAN BARBERIS CHRISTOPHER C HAMBROJACKG QUIRK SEAN 1GOOD HOPE LANE U156D 67BRITTANIACIRU157A 65 BRI77ANIA CIR 1578 ' SALEM,MA 01970 4 4 SALEM,MA 01970 SALEM,MA 01970 Parcel ID:07-00 75 J Parcel ID:07-0043-876 Parcel ID:07-0043-877 ' ORLOFF DANT— E DROKER EILEEN RODRIGUEZ CHRISTINE ORLOFF DE A/ORLOFF GARY 5 GOODHOPE LANE U157D 63 BRITTANIA CIR U158A 7 GOOD. PE LANE U167C SALEM, MA 01970 SALEM,MA 01970 _ SALEM A 01970 Parcel ID:07.0043-878 Parcel ID 07-0043879 Parcel ID:07-0043880 MYSLINSKI LEONARD SHRESTHA YALEENA DUSENBERRY THOMAS R ' MYSLINSKI E. 11 GOODHOPE LANE U158C DUSENBERRY DEBORAH L 61 BRITTANIA CIR U15BB SALEM,MA 01970 9 GOOD HOPE LANE U158D SALEM,MA 01970 SALEM,MA 01970 ' Parcel ID: 07.0043-881 Parcel ID:07-0043882 Parcel ID:07-0043-883 DEAN ELAINE S RUSSO PAUL CROCKER MARTHA H 2 GOODHOPE LANE U159A 8 GOODHOPE LANE U159C SALEM,MA 01970 N idA-6"W SALEM,MA 01970 sa i Parcel ID:07-0079-0 Parcel ID:07-0078-0 Parcel ID:060007-0 KAK REALTY TRUST KkK-REAtrF9RV6T DRISCOLL BARBARA ETAL KELLOGG JOHWKLEIN I 18 WALLACE ROAD 1 TECHNOLOGY WAY i TECHNOLOGY WAY LYNN,NSA 01901 SALEM,MA 01970 SALEM,MA 01970 Parcel ID 06-0011-0 `/ Parcel ID:0E-0012-0 Parcel ID:06-0013-0 SALEM CONSERVATION COMM LYNN SAND&STONE - T SALEM CITY OF CIO AGGREGATE INDUSTRIES 11 ' MA 1715 BROADWAY P' 03 15Fjpbin�an 1�d• LLC SAUGUS,MA 01906 S 970 12e cLbo'k, vn¢} Parcel ID 07-0001-0 Parcel ID:07-004MOl Parcel ID:07-0043-802 0l`1 0 ABDELGADIR ESAM Y DEVEREUX SHARON M BRACKEN KATHRYN 48 CLARK STREET 7ADMIRALS LANE U1 39-A OLSON SUSAN SALEM,MA 01970 SALEM,MA 01970 5 ADMIRALS LANE 1398 SALEM,MA 01970 Parcel ID:0 - 43-603 Parcel ID:07-0043-804 Parcel ID:07.0043-805 DUNNIGAN CATHLEEN JANET C. LACK 1999 REV lft"I ' Wi-Ili mer' Lin,4cl M DUNNIGANGREGORY J LACKJANETTR 3 ADMIRALS LANE U139 1 ADMIRALS LANE U139D 2 ADMIRALS LANE U140 SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 d' '. ' Parcel Q 07-0043-806 Parcel ID:07.0043.807 Parcel ID:07-0043608 FREELOVE ANTHONY E GAETA RICHARD C SLASKOVICH PHILIP D FREELOVE DEBRA GAETA MARILYN R BLASKOVICH DIANE M 4 ADMIRALS LANE U140-B 6 ADMIRALS LANE U140C 8 ADMIRALS LANE 140D ' SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 Parcel ID.,07-0043-809 Parcel ID:07-0043-810 Parcel ID:07-0D4M11 HARB GEORGE FINE KENNETH M USMANOV NATALIA ISSA RANDA A FINE ELLA E 14 ADMIRALS LANE U 141 C 10 ADM IRALS LANE U141A 12 ADMIRALS LANE U141 B SALEM,MA 01970 SALEM,MA 01970 SALEM, MA 01970 ' Parcel lD:07-0043-812 Parcel ID:07-0043-813 Parcel ID.07-0043-614 MUNROE STEPHEN J MARCY ALIZABETH 71 WHALERS LANE U142A 73 WHALERS LANE U142B .' 16 ADM IRALS LANE U141D SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 -3 Y)l✓YlOnr 1�i1LUl� Parcel ID:07-0043-815 Parcel ID:07-0043816 Parcel ID:07-0043-817E-�L=5 �1� ' SARYTCHEV DMITRI BELTRAM JOYCE E 3 BRITTANIA CIRCLE U142C COLUCCIELLO 7 BRITTANIA CIRCLE U 143A SALEM,MA 01970 1 BRITTAN IA CIR U142D SALEM,MA 01970 SALEM,MA 01970 ' Parcel ID:07-DO43.818 Parcel ID:07-0043619 Parcel ID:07-0043-820 HARRINGTON DANIELM FREEDMAN NICOLE J EMMONSKATHIEA HARRINGTON ANGELINA MCGUIRE TOBIAS W 9 BRITTANIA CIR U-143D 5 BRITTANIA CIR U143B 11 BRITTANIA CIR U 143C SALEM,MA 01970 SALEM,MA 01970 SALEM,MA 01970 Parcel ID:07-0043.821 Parcel ID:07-0043822 Parcel ID:07-0043-823 ZAMAKIS MARIA STOLZ THEODORE O 2 BRITTANIA CIR U144A KOWALSKI JOANN C 6 BRITTANIA CIRCLE U144C SALEM,MA 01970 4 BRITTAN LA CIRCLE U144B SALEM,MA 01970 ' SALEM,MA 01970 f✓1 e ✓' S�`4.10 Yt e..� L Parcel ID:07-0043-864 Parcel ID:07-0043.885 Parcel ID: 07-0043-686 WOODNORTH DAVID M SANTERRE JAMES W JR KREYCHMAN INNA WOODNORTH KAORI IDA SANTERRE MARILYN G CRUZ TOMAS 297 BAY DRIVE 10 GOODHOPE LANE U160A 14 GOOD HOPE LANE U1606 ITASCA,IL 60143 SALEM,MA 01970 SALEM,MA 01970 Parcel ID: 07-0043-687 Parcel ID:07-0043-888 Parcel ID: 07-0051-0 ORLOV MICHAIL LERNER BORIS JOHN M INGEMI REALTY 16 GOOD HOPE LANE U 160C LERNER GALINA INGEMI J&L TRS SALEM,MA 01970 12 GOODHOPE LANE U16040 381 HIGHLAND AVE ,7 SALEM,MA 01970 SALEM,MA 01970 r Peree11D: 07-0060-0 Parcel ID:07-0062.0 Parcel 10: 07-0070- `� i , BARNES ROAD TRUST THE NORTH SHORE TENNIS& 96SWAMPS VROAD,LLC INGEMI JOHN M ETALI TRS SQUASH CLUB INC ATT N::THIS UMLIN GROUP 383 HIGHLAND AVENUE 98 SWAMPSCOTT ROAD 600 . NG AVENUE SALEM,MA 01970 SALEM,MA 01970 S ,MA 01970 Parcel ID. 07-0070-801 Parcel ID:07-0070802 �/ Parcel ID.07-0070-803 JACQUELINES GOURMET MH LLC MH,LLC 96 SWAMPSCOTT RD U1 96 SWAMPSCOTT RD U2 96 SWAM PSCOTT ROAD U3 ' SALEM,MA 01970 SALEM, MA 01970 SALEM,MA 01970 ' Parcel ID.,07-0070-604 Parcel ID:07-0070-805 Parcel ID.,07-0070.806 KCT REALTY TRUST 5.96 SWAMPSCOTT ROAD LLC GROOM REALTY LLC TOBIN KEVINrrOBIN 15 WYMON WAY 96 SWAMPSCOTT ROAD U6 LYNNFIELD,MA 01940 SALEM,MA 01970 ' BEVERLY,MA 01915 34 +b2-Eve re-n ct4 Parcel ID:07-0070-807 Parcel ID:07-0070-808 Parcel 10:07-0070-809 EKSTROM DAVID R&J SWAMPSCOTT ROAD S&D&D LLC EKSTROM ELIZABETH L 43 NORMAN STREET 96 SWAMPSCOTT ROAD U9 16 HATHAWAY AVENUE MARBLEHEAD,MA 01945 SALEM,MA 01970 BEVERLY,MA 01915 Parcel ID:07-0070-810 - Parcel ID:07.0077-0 Parcel ID:07-0082-0 SWAMPSCOTT ROAD ASSOC SALCO REALTY,LLC SEARS DEREK R 96SWAMPSCOTT ROAD U10 3 TECHNOLOGY WAY SEARS RENEE MICHELLE SALEM,MA 01970 SALEM,MA 01970 51 CLARK STREET I ' SALEM,MA 01970 Parcel ID;07-0083-0 Parcel ID:07-0087-0 GOLDEN FRANK USB CAPITAL,LLC GOLDEN DEBORA L 4 TECHNOLOGY WAY 53 CLARK STREET SALEM, MA 01970 SALEM,MA 01970 V f Assksseesspro 45-.- 5O4 Salem,-L tship�ITaz mw M996Mt s 4 x " File �:'Edd ,Record Navrgatr Pra[ess.'Utdrtres .Toots Options Help Status -' - .k o-�l Indexed By Parcel lD Cid# Add Mod Del Dave. Carn::el f ' r,,„Barna)FDS 07.00d3-675'1, Gaod:1 of 1 ;,Locatwrr 7 GOOD IlEF_I:ANE. '- Cosr..g3g3', - MoveNextAttaunt _. (Current Ownerkm Plior Owner actors Ta es ' MT . t ResVSEY _ z NEIL OVSEY J ALICE10 - �; Sheet 1r -.,.— 11355MODINALANE SocSert31� Stree!'g2 SocSecAt2�- T:ypegt2; C�Y/TownPORTER134NCH SocSepj3. y �3: _ - v Bova ce/State BoataL 913Account Type . -.... ' �'aCouEtlry Gadg Separate Bit J- x. DOB MM/ )w RaE9�Reteret ce, 35?64.7J Valid Owner:; pa 0vaner Ocaapred Sale Date 9/.2(2016 O Wr lookup NumbW 369112 ' Sales Exem ions MoreOwners -�OtherParties. FOpen f—3/23/2017 F9:03AM —� 14025 ^Quicl 1 li I ' PROJECT NARRATIVE THERMAL CIRCUITS ADDITION #1 &#6 TECHNOLOGY WAY ' SALEM, MASSACHUSETTS ' March 20, 2017 Existing Conditions 1 The subject property is comprised of two parcels; a developed portion of land at #1 Technology Way located easterly off of the end of Technology Way that contains the Thermal Circuits manufacturing building with ' associated loading docks; paved parking lots; utilities; drainage system, and.various landscaping (referenced herein as "Parcel #1"), and an undeveloped portion of land at #6 Technology Way (westerly of the existing building) that contains hilly, forested uplands with rocky soils and occasional ledge outcrops which descend to ' wetland areas (referenced herein as "Parcel #2"). Additionally, the project locus will include a paved portion of Technology Way which curves around Parcel #1. Vegetated upland and wetland areas in Parcel #2 have been historically disturbed as evidenced by the presence of wetland crossing berms; drainage, water, and utility ' structures; rock/rubble piles; and other man-made disturbances. Existing features are shown on the accompanying Hayes Engineering, Inc. plan titled "Existing Conditions, Thermal Circuits, #1 Technology Way, Salem, Mass.". Resource Areas Hayes Engineering, Inc. visited Parcel #1 on January 20, 2017 and Parcel #2 on March 21, 2017 in order to ' identify existing resource areas that would be subject to protection under the Massachusetts Wetlands Protection Act, Salem Wetlands Protection Ordinance, and their promulgated regulations. Resource areas consisting of bordering vegetated wetland and inland bank were identified southwesterly of the existing building and parking area as follows. Bordering Vegetated Wetlands ' Bordering vegetated wetlands on this property are associated with an intermittent stream flowing southeasterly through the property, and are characterized as red maple swamp and fresh water marsh. Boundaries of the 1 wetlands were delineated with flags numbered l- 21 and Al-A7 using wetland vegetation and soil indicators and changes in topography. The status of the stream as intermittent was determined pursuant to findings contained in the Superseding Order of Conditions for D & D Realty Trust, #100 to 114 Swampscott Road, Salem, MA (DEP file #064-0472) issued by the Department of Environmental Protection in January of 2009. ' Refer to the attached "DEP Bordering Vegetated Wetland Delineation Field Data Forms' for details relative to plant species existing along the wetland boundary. ' Bank Inland bank resource areas are present along the aforementioned stream; however they are contained within the wetland areas and were not delineated in the field. The pipe sides of the culvert at the utility crossing (at wetland flags #3 &#4 and #A-4 &#A) also qualify as bank. ' Bordering Land Subject to Flooding This property is not within the 100 year flood plain (bordering land subject to flooding) as determined in the review of FIRM Panel 2009C0531G dated July 2014. ' 1 Project Narrative, Thermal Circuits Addition, #1 Technology Way, Salem, MA March 20, 2017 Project Description ' The applicant proposes to construct an addition on the west side of the existing Thermal Circuits manufacturing facility along with associated parking lot reconfiguration, stormwater management system, ' drainage system, utilities, and other amenities. The existing portion of Technology Way between the first cul- de-sac near #4 Technology Way (aka intersection Robinson Road and Technology Way) and the second cul- de-sac adjacent to the Thermal Circuits parking lot will be converted into a parking area. Erosion control ' procedures will be implemented as outlined in the attached document titled "Stormwater Report" and as shown on the accompanying project plans. Proposed activities are discussed below. ' Addition The existing building will be enlarged with a 27,470 s.f. addition as part of the project. Construction activities associated with the proposed addition will include erosion control barrier installation; removal or relocation of existing features within the addition footprint (e.g.: pavement, loading dock, drainage structures, utility boxes, landscaping); foundation installation, building construction; and connection to utilities and stormwater management BMPs. Demolition debris resulting from the project will be placed in a suitable refuse container to ' be transported off site for proper disposal; however, asphalt will be recycled. Removed drainage structures and stone from along the building will be reused for project construction where practicable. The addition will be partially located within the 100-foot buffer zone associated with the bordering vegetated wetlands. ' Parking Reconfiguration The existing parking lot along the westerly side of the building will be eliminated as a result of building construction. Facility parking will be reconfigured to include new parking to be created within the upland areas upgradient of wetland flags #12- #19 and within the paved layout of the aforementioned portion of Technology Way. The current paved access from the parking area to the loading dock will be repaved with addition of curbing. Construction activities associated with the new parking areas will include erosion control barrier installation; removal of existing features (e.g.: vegetation, riprap pile, pavement, curbing, utilities); excavation; drainage system installation and reconfiguration; filling and grading, paving; and loaming and seeding. The existing Technology Way cul-de-sac will be incorporated into the new 46-space parking area to be built upgradient of the wetlands, with the remainder of the former road to be widened to accommodate the addition of 25 spaces. Parking lot construction activities will occur within the 100-foot buffer zone. Stormwater Management System ' A stormwater management system designed to capture and treat roof and parking lot runoff will be installed as part of the project as detailed in the attached document titled "Stormwater Report" and as shown on the above- referenced Notice of Intent plan set. Proposed stormwater management BMPs consist of deep sump catch basins fitted with gas traps, stone-lined forebay, drain manhole with VortSentry HS chamber, and "Cultec" subsurface stormwater recharge area. Portions of the existing drainage system will be reconfigured and 1 integrated into the new stormwater system. Construction activities associated with this work consists of removal of existing features; trenching and excavation; structure and pipe installation; backfilling; grading, loaming and seeding. The forebay, Cultec recharge area, and associated drainage structures will be located within the 100-foot buffer zone. The proposed work will be performed within the jurisdiction of both the Massachusetts Wetlands protection Act (MGL Chapter 131, Sec. 40, CMR 10.00 et. al.) and the City of Salem Wetlands Protection Ordinance and is required to meet performance standards outlined in the associated regulations. These standards and project compliance are discussed below. ' 2 1 Project Narrative, Thermal Circuits Addition, #1 Technology Way, Salem, MA March 20, 2017 1 Regulations WETLANDS PROTECTION ACT (310 CMR 10.00 ET. AL) AND 1 SALEM WETLANDS PROTECTION ORDINANCE (CHAPTER 50) Buffer Zone 1 Buffer zone disturbance will occur as a result of activities associated with the above-described addition construction. The project design provides protection to adjacent buffer zone and resource areas through the 1 placement of activities away from the wetland boundary, use of retaining walls to minimize grading, and provision of stormwater management BMPs. Erosion control procedures will be implemented as outlined in the documents contained in the attached "Stormwater Report' and as shown on the accompanying Notice of Intent 1 plans. Buffer zone habitat will not be significantly affected by the project since most of the activities with be located within areas of old fill, pavement, riprap, stone piles and other man-made disturbances. 1 1 1 1 1 1 1 ' 3 DEP Bordering Vegetated Wetland (310 CMR 10.55) Delineation Field Data Form Applicant: Prepared by: Wallis/Haves Eno. Project location: #1 Technology Way Salem, MA Check all that apply: 0 Vegetation alone presumed adequate to delineate BVW boundary: fill out Section I only ❑ Vegetation and other indicators of hydrology used to delineate BVW boundary: fill out Sections I and II ❑ Method other than dominance test used (attach additional information) - Upgradient of Flag 6 Section I. Vegetation Observation Plot Number: Date of Plot:January 20, 2017 A. Sample Layer and Plant Species B. Percent Cover C. Percent D. Dominant Plant E. Wetland (by common/scientific name) (or dominance ratio) Dominance (yes or no) Indicator Canopy Trembling aspen (Populus tremula) 38.0 100.0% Yes FACU TOTAL COVER = 38.0 Shrubs Hop-hornbeam (Ostrya virginiana) 10.5 77.8% Yes FACU Red maple (Acer rubrum) 3.0 22.2% Yes `FAC TOTAL COVER = 13.5 Vegetation conclusion: Number of dominant wetland indicator plants: 1 Number of dominant non-wetland indicator plants: 2 Is the number of dominant wetland plants equal to or greater than the number of dominant non-wetland plants? Yes No X = M mmm ' = = MM MIMI 1011111111=11 DEP Bordering Vegetated Wetland (310 CMR 10.55) Delineation Field Data Form Applicant: Prepared by: Wallis/Hayes Eng. Project location: #1 Technology Way Salem, MA Check all that apply: n Vegetation alone presumed adequate to delineate BVW boundary: fill out Section I only ❑ Vegetation and other indicators of hydrology used to delineate BVW boundary: fill out Sections I and II ❑ Method other than dominance test used (attach additional information) Downgradient of Flag 6 Section I. Vegetation Observation Plot Number: Date of Plot:January 20, 2017 A. Sample Layer and Plant Species B. Percent Cover C. Percent D. Dominant Plant E. Wetland (by common/scientific name) (or dominance ratio) Dominance (yes or no) Indicator Canopy Red maple (Acer rubrum) 38.0 100.0% Yes 'FAC TOTAL COVER = 38.0 Shrubs Winterberry (Ilex verticillata) 10.5 50.0% Yes 'FACW Red maple (Acer rubrum) 10.5 50.0% Yes "FAC TOTAL COVER = 21.0 Vegetation conclusion: Number of dominant wetland indicator plants: 3 Number of dominant non-wetland indicator plants: 0 Is the number of dominant wetland plants equal to or greater than the number of dominant non-wetland plants? Yes X No I ' Applicant: Project File: SAL-0042A Tech Way Associates LLC 41 Technology Way Salem, MA 01970 Stormwater Report: Proposed Building Addition #1 Technology Way Salem, Massachusetts April 11 , 2017 1 1 1 Hayes Engineering, Inc Applicant: ' Tech Way Associates LLC One Technology Way Salem, MA 01970 Hayes Engineering, Inc Mitigative Drainage Analysis: One Technology Way Salem, Massachusetts 01970 0 April 11 , 2017 1 1 TABLE OF CONTENTS PAGES CONTENT Section A Introduction, Methodology & Conclusion • Peak Flow Rate Summary Tables & �- • Stormwater Management BMP Performance Worksheets ' Section B Existing Condition Watershed Analysis Section C Proposed Condition Watershed Analysis • Groundwater Recharge & Water Quality Volume Requirement Calculations ' Section D Stormwater Management Checklist ' Section E Operation & Maintenance Plan & LTPPP Section F Construction Pollution Prevention Plan & Attachments • Contech VortSentry HIS Operation Guide • Cultec Operation & Maintenance Guidelines • Existing & Proposed Condition Watershed Maps (11° x 17") 1 1 1 i i 1 11 1 1 1 Section A - Methodology i 1 1 1 1 1 1 1 1 ' Mitigative Drainage Analysis #1 Technology Way, Salem, MA ' April 11, 2017 MITIGATIVE DRAINAGE ANALYSIS #1 Technology Way SALEM, MASSACHUSETTS April 11, 2017 1 The following Mitigative Drainage Analysis has been prepared in conjunction with designing the drainage system for the proposed building addition and additional parking at 1 Technology Way in Salem, Massachusetts. PROJECT DESCRIPTION ' The scope of the project includes a 27,470 square-foot addition to an existing office/light manufacturing building with associated parking areas to accommodate 137 vehicles, an increase of 43 parking spaces over existing conditions. The drainage system has been designed to comply with the relevant section of DEP's Stormwater Management Standards. ' PROJECT COMPLIANACE WITH STORMWATER STANDARDS Standard 1: No New Untreated Discharges The outlets to the South discharge to level spreaders. The drainage from the North of the site is directed into the existing storm drain system in Technology Way. Standard 2: Peak Rate Attenuation Refer to the attached calculations for peak rate runoff analysis. To comply with the DEP Stormwater Management Policy and local requirements, the 2, 10, 25 and 100-year, Type III, 24-hour storms have been studied. The subject site is divided into multiple watersheds which ultimately discharge in two directions, one towards the wetland system to the South and the second towards the existing drainage system in Technology Way. The geometry of the watersheds will change from the existing to the proposed condition. This is accomplished by regrading in the area of the new improvements in order to direct the runoff from paved areas toward the BMPs to the maximum extent practicable. The runoff computations for this project were all conducted utilizing the HydroCAD Stormwater Modeling System by HydroCAD Software Solutions, LLC. The methodology used is based on TR-55 1 and TR-20 as developed by the Soil Conservation Service of the USDA. Runoff curve numbers and concentration times were calculated for each sub-watershed in the existing and proposed condition. A computer model for both conditions was then created using the software program. Schematics of the models are included at the beginning of the respective (existing vs. proposed) sections of this report. Included in the proposed design are catch basins and a Vortsentry hydrodynamic separator treatment unit through which the runoff from the paved areas will be directed. The roof of the proposed addition is being utilized to mitigate the peak rate of runoff from the site. Runnoff from the roof of the proposed addition will be routed through a subsurface infiltration system 2 Mitigative Drainage Analysis #1 Technology Way, Salem, MA April 11, 2017 of Cultec chambers with an overflow which discharges to the wetland to the South. The stormwater runoff from the area of the new loading dock will be discharge to a forebay before discharging to the same wetland to the South. Runoff from the remainder of the site will discharge to the street drainage. There are two sets of calculations: the existing and the proposed. Each calculation set includes: 1) summary sheets for each watershed and link; and 2) detailed summary sheets for the stormwater management basins for the 2-year design storm. For the 10,25 and 100-year storms, a summary of each watershed, link, and pond is included. The results of the calculations indicate that there is a decrease in peak rate of runoff to both the wetland and the street drainage and a net decrease in rate of runoff from the total site. 1 Standard 3: Recharge The Massachusetts Department of Environmental Protection Stormwater Management Policy also requires projects to be designed such that the annual groundwater recharge after development approximates pre-development recharge. The project is a mix of new construction and redevelopment. Due to this the recharge volume is based upon the increase in imperviousness. Proposed recharge is a system of subsurface infiltration chambers in which the required recharge volume will be contained below the overflow outlet pipe. A recharge worksheet is included with this report. Standard 4: Water Quality In order to address the issue of water quality, the drainage system has been designed to conform to the Department of Environmental Protection's Stormwater Management Policy. The system includes Ideep sump catch basins with gas traps, a forebay and a Vortsentry unit. The DEP has assigned presumed total suspended solids (TSS) removal rates for the deep sump catch basins which are rated to remove 25%. The Vortsentry has been rated by the manufacturer to remove 80%. For the purpose of the TSS calculations, a removal rate of 77% was used. Worksheets showing TSS removal and a DeMinimus Stormwater Discharge Worksheet have been included with this report. Standard 5: Land Use with Higher Potential Pollutant Loads The project does not include any uses with Higher Potential Pollutant Loads. Standard 6: Critical Areas The stormwater system does not discharge into any critical areas. 3 Mitigative Drainage Analysis #1 Technology Way, Salem, MA April 11, 2017 Standard 7: Redevelopment The project is a mix of new development and redevelopment. The design meets all standards with standards 3 and 4 being based upon the increase in impervious area. Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control The disturbed portions of the site will be enclosed with an acceptable erosion barrier such as silt fence and a silt sock. There will be a crushed stone tracking pad constructed at the entrance that will be utilized during construction and replaced as necessary. Standard 9: Operation and Maintenance Plan ' An Operation and Maintenance Plan is included in this report. ' Standard 10: Prohibition of Illicit Discharges The inspections and maintenance requirements of the Operation and Maintenance Plan will help to prevent illicit discharges. 1 1 4 ' Runoff Rate Comparison #1 Technology Way Salem, MA 1 Watershed Storm Existing Q Proposed Q Change % Change (C.F.S.) (C.F.S.) To Technology Way 2 Year 6.51 6.37 -0.14 -2.2% ' (1L) 10 Year 10.13 9.68 -0.45 -4.4% 25 Year 12.04 11.43 -0.61 -5.1% 100 Year 14.67 13.84 -0.83 -5.7% To Wetland to S 2 Year 0.63 0.54 -0.09 -14.3% (2L) 10 Year 1.55 1.53 -0.02 -1.3% 25 Year 2.10 2.01 -0.09 -4.3% 100 Year 2.90 2.54 -0.36 -12.4% Total 2 Year 7.10 6.89 -0.21 -3.0% (3L) 10 Year 11.56 10.90 -0.66 -5.7% ' 25 Year 13.99 13.48 -0.51 -3.6% 100 Year 17.36 16.38 70.98 5.6% 4/11/2017 Cultec Performance #1 Technology Way Salem, MA Storm Qin Q out Primary Q out Infiltration Water Level (C.F.S.) (C.F.S.) (C.F.S.) 2 Year 0.22 0.21 0.01 100.05 I ' 10 Year 0.25 0.24 0.01 100.17 25 Year 0.26 0.25 0.01 100.23 100 Year 0.27 0.26 0.01 100.29 L � 1 4/11/2017 25 Year Storm Pipe Flow Calculations #1 Technology Way Salem Massachusetts Input Results Check Slope Discharge Pipe Dia. Manning's ScVelocity Vc Depth Dc Check for Max. Possible Description (ft/ft) (cfs) (ft) Coefficient (ft/ft) (fps) (fps) (ft) (ft) Depth>1.8 Dischage(cfs) CB1 to DMH1 0.039 1.13 1 0.011 0.0040 7.42 3.27 0.25 0.45 OKAY 8.89 CB2 to DMH1 0.038 0.76 1 0.011 0.0039 6.55 2.90 0.21 0.37 OKAY 8.78 DMH1 to DMH2 0.0067 1.89 1 0.013 0.0064 3.96 3.89 0.59 0.591 OKAY 3.12 CB3 to DMH2 0.025 1.62 1 0.011 0.0044 7.01 3.68 0.34 0.55 OKAY 7.12 CB4 to DMH2 0.234 0.22 1 0.011 0.0030 8.54 1.86 0.07 0.21 OKAY 21.78 DMH2 to DMH3 0.102 3.73 1 0.013 0.0107 13.00 5.35 0.39 0.83 OKAY 12.17 CB5 to DMH3 0.025 0.63 1 0.011 0.0038 5.34 2.74 0.21 0.33 OKAY 7.12 DMH3 to DMH4 0.014 6.75 1.5 0.013 0.0064 7.19 5.30 0.79 1.02 OKAY 13.29 PR ROOF to Cultecs 0.01 0.26 0.5 0.013 0.0075 2.81 2.52 0.24 0.26 OKAY 0.60 EX ROOF to DMH3 0.01 2.39 0.83 0.013 0.0116 3.73 4.93 0.63 0.70 Not Accurate 2.32 4/11/2017 100 Year Storm Pipe Flow Calculations #1 Technology Way Salem, Massachusetts Input Results Check Slope Discharge Pipe Dia. Manning's Sc Velocity Vc Depth Dc Check for Max. Possible Description (ft/ft) (cfs) (ft) Coefficient (ft/ft) (fps) (fps) (ft) (ft) Depth>1.8 Dischage(cfs) 0 CB1 to DMH1 0.039 1.36 1 0.011 0.0042 7.82 3.47 0.27 0.5OKAY 8.89 C132 to DMH1 0.038 0.92 1 0.011 0.0039 6.92 3.07 0.23 0.41 OKAY 8.78 DMH1 to DMH2 0.0067 2.28 1 0.013 0.0070 4.12 4.19 0.66 0.65 OKAY 3.12 CB3 to DMI-12 0.025 1.98 1 0.011 0.0047 7.41 3.96 0.37 0.61 OKAY 7.12 CB4 to DMI-12 0.234 0.26 1 0.011 0.0032 8.98 2.00 0.08 0.22 OKAY 21.78 DMH2 to DMH3 0.102 4.52 1 0.013 0.0142 13.68 6.10 0.44 0.89 OKAY 12.17 CB5 to DMH3 0.025 0.77 1 0.011 0.0039 5.67 2.91 0.23 0.37 OKAY 7.12 DMH3 to DMI-14 0.014 8.17 1.5 0.013 0.0074 7.52 5.79 0.89 1.12 OKAY 13.29 PR ROOF to Cultecs 0.01 0.27 0.5 0.013 0.0075 2.84 2.55 0.24 0.27 OKAY 0.60 EX ROOF to DMH3 0.01 2.88 0.83 0.013 0.0155 3.89 5.62 0.50 0.75 Not Accurate 2.32 4/11/2017 Recharge Worksheet 603 Salem Street Nantucket, MA 02554 Wakefield, MA 01880 Tel: (508)228-7909 ' Tel: (781)246-2800 Hayes Engineering, Inc Fax: (781)246-7596 Refer to File No. SAL-0042A Required Recharge Volume: 1 The Required Recharge Volume equals a depth of runoff corresponding to the soil type times the impervious areas covering that soil type at the post-development site. ' Rv = F X Aimpervious Where: ' Rv is the Required Recharge Volume F is the Target Depth Factor associated with each Hydrologic Soil Group Aimpervious is the proposed pavement and rooftop area at the site NRCS HYDROLOGIC APPROX. TARGET DEPTH SOIL TYPE SOIL TEXTURE FACTOR F A sand 0.6-inch B loam 0.35-inch C silty loam 0.25-inch D clay 0.1-inch Recharge Target Depth by Hydrologic Soil Group IRequired Rechar e Volume Calculation Target Depth Increase Required NRCS Factor Impervious Area Rechage Volume Hydrologic (F) (A) (Rv) Soil Group (inches) (square feet) (cubic feet) A 0.60 sand B 0.35 loam 28,300 825 C 0.25 (silt loam) D 0.10 (clay) 7,852 65 iTotal Recharge Volume Required 890 Total Increase Impervious Area = 36,152 s.f. Total Impervious Area Directed to Recharge Area(s) = 27,451 s.f. (See Mitigative Drainage Study dated 3-29-2017) Area Adjustment = 27,451 s.f. /36,152 s.f. = 0.76 (> 0.65—OK) Recharge Worksheet #1 Technology Way, Salem, MA March 28, 2017 J e Adjusted Required Recharge Volume = 890-cf/ 0.76 ® 1,171 cf. Draw Down Analysis: Static Method: Rv Tlmedrmvdown (K)(Bottom Area) Where: Rv is the Storage Volume Provided K is the Saturated Hydraulic Conductivity (for"Static" Method, use Rawls Rate) Bottom Area is the Bottom Area of Recharge Structure 1982 Rawls Rates NRCS Hydrologic Soil Group Infiltration Rate Texture Class HSG Inches/Hour Sand A 8.27 Loamy Sand A 2.41 Sandy Loam B 1.02 Loam B 0.52 Silt Loam C 0.27 ' Sandy Clay Loam C 0.17 Clay Loam D 0.09 ' Silty Clay Loam D 0.06 Sandy Clay D 0.05 Silty Clay D 0.04 Clay D 0.02 Chambers: Timedn.mRvwn — (K)(Bottoni Area) 1,171 cf 31.06 hours (0.52/hr)870sf)(1 ft/12) — The Chambers will draw down within the required 72-hour time frame. ' Page 2 of 2 ' pr-technologyR Type 11124-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 4P: cultec chambers Elevation Surface Storage Elevation Surface Storage (feet) (sq-ft) (cubic-feet) (feet) (sq-ft) (cubic-feet) 97.50 870 0 100.10 870 1,527 97.55 870 17 100.15 870 1,545 97.60 870 35 100.20 870 1,563 97.65 870 52 100.25 870 1,580 97.70 870 70 100.30 870 1,598 97.75 870 87 100.35 870 1,615 97.80 870 104 100.40 870 1,632 97.85 870 122 100.45 870 1,650 97.90 870 139 100.50 870 1,667 97.95 870 157 100.55 870 1,685 98.00 870 174 100.60 870 1,702 98.05 870 211 100.65 870 1,719 98.10 870 248 100.70 870 1,737 98.15 870 285 98.20 870 322 98.25 870 358 98.30 870 395 98.35 870 431 98.40 870 467 98.45 870 503 ' 98.50 870 539 98.55 870 575 98.60 870 611 98.65 870 646 98.70 870 681 98.75 870 716 98.80 870 751 98.85 870 785 98.90 870 820 98.95 870 854 99.00 870 888 ' 99.05 870 922 99.10 870 955 99.15 870 989 99.20 870 1,022 99.25 870 1,055 99.30 870 1,087 99.35 870 1,119 99.40 870 1,151 �gpT�S?t60 99.45 870 1,182 99.50 870 1,21 oOJT Golf T 99.55 870 1,243 99.60 870 1,273 99.65 870 1,302 99.70 870 1,331 99.75 870 1,359 99.80 870 1,387 99.85 870 1,413 99.90 870 1,439 99.95 870 1,463 100.00 870 1,486 100.05 870 1,507 Water Quality Flow ' Calculation Worksheet 603 Salem Street Nantucket, MA 02554 Wakefield, MA 01880 Tel: (508)228-7909 Hayes Engineering, Inc Tel: (781)246-2800 Fax: (781)246-7596 Refer to File No. SAL-0042A For First 0.5-inch of Runoff WQV: ' Impervious Surfaces to Vortsentry unit: Time of Concentration: 0.167 Hr ' Tributary Impervious area: 0.59 Acres Time of Concentration: Longest Catchment Tc: 0.167h q„ from Figure 4, attached: 677 csm/in Water Quality Flow (WQF): Q1.0 = (qu)(A)(WQV) ' Where: Qi.o= peak flow rate associated with the first 1-inch of runoff; ' qu = the unit peak discharge, in cubic feet per second per square mile per inch, A = impervious surface in drainage area, in square miles; ' WQV=water quality volume, in inches (1.0 inches for critical areas) ' Water Quality Flow(WQF) continued: ' csm Q1.0 = (677 in ) (0.00092186 sq. mi.)(0.5") Q1.0 = 0.31cfs Water Quality Flow Calculation RE: Thermal Circuits, Technology Way Date: 3-28-2017 ' Proprietary Separator Selection: The VortSentry HS36 will provide a presumptive removal rate of 80% for water quality flows through 0.55 cfs. See Massachusetts sizing table below: rCradf ifego deJ = 5. 17 SS 11 ig p3 f,nl I,v+ •F )iPed.�raE � . ? � 7.6 i ]s5 13 e•8 .._-_ 1 va 5 aJdiJ wrpp 7 t0.- I I_ � 7R _ s t 24 71 I .t died sunrr, 7 _ 2a 3 I ILI •pn mr He-O _ sR6 21 r 1�6 •s 1 added sr`mn ar.J J ump :+ iaGdad m'P y� $ 11U : 22 'rainieunce rcm, a.fien amnr.dh, ),,ht { hcz er sirkl: ,n ' - Irian.{ray¢ me mm ndcl hcn Ir Ir- 'l esa Miihi of i i'r I v wdu wr . le tion in mmP rcnnlcr n,m r + _d mien sedmen-rxhes a IlAjhrof 6d'talow voatur sklr4acz<b ti"In ilu.anf. 9 bm nFlory Ratcn bwd,,l.00%lam al of•+crtidlzc rlsblbnlar :no an average patldr Az ri 7a""nonn.Ihu flow&V L"_ maximum Saw prior towMcb bgges oo:urs. yof -yst_ms can ho sizwi Sa r.J I. m--7'aliy fowp9 to i,'%a... crtannul bat dzp2rrd... the lual rxgatw,y all. drevt sizing bared on a WN,.tnrnr the requn.d v-.,Irk '.,td stould be ewuaI c .c1"ag the tisrd viater qualit!il'..f•c tYc s:aectea ,•pier.Systems:Led bmotl or.aa'lo,::,,&n,smrrn are geocrelly Imc«:ambxea NarLy sizm_7. _ l+c:didrmd paaide sce distrlbukns arz•a,olAiP c fari=_iag purFp:et upwa mZncnr. ' Cr ,i. h1, rt syr air dto ill" n butioal cfih3}rt roTbb deptl. he adji6ttt7t met pctlPk starve or teaurenance:^auirenCnps, c rtdrs a ,"PFt,erff f- he most OISt•:c.In..amg for/ it weo Page 2 of 4 Water Quality Flow Calculation I , RE: Thermal Circuits, Technology Way Date: 3-28-2017 r The StormCeptor STC 2400 will provide a presumptive removal rate of 77% for water quality flows through 1.58 cfs. See Massachusetts sizing table below: Massa€Flus -Water ; iity �[�� Ro%v Rate STC Umv rnqi Fl fir 'STC t}PFI k53 UAL, �ry9 r( $)`� O.'sH PAD 20 Tt4 fC 1u 1.an IV gI 5C nm. 12 149 2 STC 11 We ]a 1 R+ 1.42 a .9�. -48 �--'� 4INV ko i §Tc l9$$Q 3 1 e 1 3 ?J2 AR ,._. Mi IEGE�e C_," r�ln..fk:sl 6rrefl i_Pkr'6a_+are,ePr� SLh,aPeia� y5i$+1.:!save "an a_ Pa B:r�gs' a . ..� sPr.aa F { ElGk[�ca r-ual xd Fzm:Pvr��. ' f YaLSd FFId1C -� Y�$il'N..'328FFe-66P1� (AC+JM1I rt49'tXd 4C21418'ffi Lb2fZ9 `k3snr6'u9wi6r�aP]tLl 4u_.nl:..r, 6yauL aid 'WeTSSPdamral��9jt ,Fi,�44�aes°§".A x++.KI mlku2� 1""'ASc`3atn4kwe eMr,F Ys JUMAIts dvaecis+m'1Re�pn U�x�aoir 9Bt7.hrt•d e9n nb�'1� Tr ne r;.ual 14 r41 '7eY'�'-aeaar65XbxR_� arzrF _rs�mr vaA'.mJharvsmae�Fx riF,RP an .=s+.A Ir.4arlal.g:.,�[s:zlyd�c -i e�f 3lk WIJr ' Page 3 of 4 ' Water Quality Flow Calculation RE: Thermal Circuits, Technology Way ' Date: 3-28-2017 � r Figure B For Furst H-inch of Runoff,Ta81e If qu vaiues Yor la/P Curve=0.0.058,listed 6y tc,MY Type III Storm 01stributwo 1 Tc qu Tc qu Tv- qu Tc qu (Hoursp ;csutRnl (Hrzu=s) 1csm.run) (40ursi (esu.0111 (H,yers1 (csnciu) 0-01 621 1.8 24 b' S.3 •116 8.t7 77 0.03 821 1.9 238 5.4 '115 8.9 76 ' 0.05 613 2 230 5..5 113 9 76 0.067 794 2.1 223 5.6 112 9,1 75 0.033 773 2.2 217 5.7 110 9.2 74 0.1 752 2.3 211 5.8 109 9.3 74 0.116 733 R2.7 205 V6.3 'OF 9.4 73 0.133 713 260 106 9.5 72 0.1S 694 194 G. 104 9.5 72 0.16667 677 190 103 9.7 71 0.183 662 135 102 9.8 70 02 648 191 tOQ 99 70 0.217 632 176 99 10 69 0.233 619 3.1 173 -6.6 98 025 BOB 3.2 169 5.7 97 r 0.3 572 3.3 165 8.8 96 8.333 552 3.4 152 5.9 94 0.35 542 3.5 158 7 93 0.4 515 3.6 155 7.1 92 0.416 508 3.7 152 7.2 91 0.5 472 3.8 149 7.3 90 0.533 443 3.9 147 7.4 89 3.6 437 4 144 7.5 68 0.667 417 4.1 141 7.6 87 0.7 408 42 139 7.7 66 ' 0.8 333 4.3 136 7.3 35 0.9 381 4.4 134 79 84 1 342 4.5 132 8 84 ' 1..1 325 4.6 130 8.1 63 12 311 4.7 12S 62 62 1.3 297 4.8 126 8.3 31 1.4 286 4.9 124 8.4 80 1.5 274 5 122 8.5 79 1.6 264 5.1 123 8.6 79 1.7 254 5,2 116 87 78 ' 0.1ass0 E?4 Fate-S=Ft.10,2013-Page 4 ' Page 4 of 4 INSTRUCTIONS: - Version i,Automated.:Mar. 4, 2008 1. In BMP Column, click on Blue Cell to Activate Drop Down Menu 2. Select BMP from Drop Down Menu 3. After BMP is selected, TSS Removal and other Columns are automatically completed. Location: 1#1 Technology Way, Salem, MA B C D E F TSS Removal Starting TSS Amount Remaining BMP' Rate' Load* Removed (C*D) Load (D-E) ++ Deep Sump and Hooded Catch Basin 0.25 1.00 1 0.25 0.75 s Proprietary Treatment 0.77 0.75 0.58 0.17 > L_ Practice E �: 1177 ::1 = 0.00 0.17 0.00 0.17 0 :IF i�a 0.00 0.17 0.00 0.17 _V V ::1 0.00 :IF 0.17 0.00 0.17 Separate Form Needs to 83% be Completed for Each Total TSS Removal = ]Outlet or BMP Train Project: SAL-0042A Prepared By: EBL *Equals remaining load from previous BMP (E) Date: 28-Mar-17 which enters the BMP Non-automated TSS Calculation Sheet must be used if Proprietary BMP Proposed 1. From MassDEP Stormwater Handbook Vol. 1 Mass. Dept. of Environmental Protection V INSTRUCTIONS: Version 1,Automated.Mar. 4, 2008 1. In BMP Column, click on Blue Cell to Activate Drop Down Menu 2. Select BMP from Drop Down Menu 3. After BMP is selected, TSS Removal and other Columns are automatically completed. Location: #1 Technology Way, Salem, MA B C D E F TSS Removal Starting TSS Amount Remaining BMP' Rate' Load* Removed C*D) Load D-E -W Deep Sump and Hooded 0.25 1.00 0.25 0.75 Catch Basin t L Sediment Forebay 0.25 0.75 0.19 0.56 O O 0.00 0.56 0.00 0.56 O F -IF (n :F+ 0.00 0.56 0.00 0.56 F _V V 0.00 0.56 0.0 F0 0.56 IF Separate Form Needs to 44% be Completed for Each Total TSS Removal = Outlet or BMP Train Project: SAL-0042A Prepared By: EBL *Equals remaining load from previous BMP (E) Date: 28-Mar-17 which enters the BMP Non-automated TSS Calculation Sheet must be used if Proprietary BMP Proposed 1. From MassDEP Stormwater Handbook Vol. 1 Mass. Dept. of Environmental Protection DeMinimis Stormwater Discharge Worksheet 603 Salem Street Nantucket, MA 02554 Wakefield, MA 01880 Tel: (508)228-7909 Hayes Engineering, Inc Tel: (781)246-2800 Fax: (781)246-7596 Refer to File No. SAL-0042A ' Conditions for DeMinimis Discharge: 0 Physical site conditions preclude the installation of a TSS treatment practice prior to discharge. 0 The discharge is less than or equal to 1 CFS for the runoff associated with the 2-year 24-hour storm. 0 80% TSS removal is achieved on an average weighted basis from the site as a whole using the weighted average method. 0 The stormwater outlets where additional controls are used must discharge to the same reach of the same wetland or water body as the de minimis discharge. 0 Controls are placed at the outlet to prevent erosion or scour of the wetland/stream channel and bank. 0 Standard 2 (peak rate attenuation) and Standard 3 (recharge) must be achieved on a site-wide basis. 0 Source control and pollution prevention measures that mitigate the impact of the untreated or partially treated discharges are identified in the Pollution Prevention ' Plan required by Standard 4 and fully implemented (e.g., such as street sweeping). 0 The size of the drainage area contributing runoff to the untreated outlet has been reduced to the maximum extent practicable. DeMinimis TSS Weighted Average Equation: Weighted Average (%) _ ((Areal)(TSS1) + (Area2)(TSSZ) + (Areaj(TSS, )) (Impervious Area) 1 Des Calculation Circuits, Technology Way Date 3-28-2017 1 � ' Catchment Catchment Area Impervious Area TSS Removal Impervious Area x TSS Removal (St.) (sf.) Rate (%) Rate ' To CB's & Forebay 5,576 4,840 44 2,129 Original Rooftop 51,769 51,769 100 51,769 ' New Rooftop 27,470 27,470 100 27,470 Through Vortsentry 33,811 25,835 83 21,443 ' Untreated 14,417 0 0 1 F 128,626 124,331 102,811 o[(Impervious Areaj)(TSS Removal Ratej)] I ' Weighted Average (%) = Impervious Area ' 4,840(0.44) + 51769(1.0) + 27,470(1.0) + 25,835(0.83) + 14,417(0) Weighted Average (%) = 124,331 ' = 82.7% Standard 4 is addressed. The weighted average for the presumptive TSS removal achieves or exceeds 80% for tfie site. 1 Page 2 of 2 s Hydrologic Soil Group—Essex County,Massachusetts,Southern Part (#1 Technology Way,Salem,MA) n 341620 341670 341720 34�T10 311626 311870 _ 34119`034 9]0 34 34 0 39 120 42°29'42"N 42°29'42"N .0" a \y��J e J J� a 7 4C t 150 2E 4 r v$ F P So-I X@PgR n•t b-wgAild Vgthi sc I-. 42°29'30"20 N 42"29'30"N 3415]0 311620 3116]0 Minto 3417]0 341820 3416]0 341420 341970 342@0 342UN 342ttiP 3 3 Map Sole:1:2,520 Apanted on A landsrnpe(11"x 8.5")sheet Meters n N p 35 M 140 210 A Feet 0 ion 2(b 400 fi00 Map projection:Web Mercator ComercooNinates:WC584 Edge Ga:UiM Zone 1920 WG584 USDA Natural Resources Web Soil Survey 3/17/2017 Conservation Service National Cooperative Soil Survey Page 1 of 4 Hydrologic Soil Group—Essex County, Massachusetts,Southern Part (#1 Technology Way, Salem,MA) MAP LEGEND MAP INFORMATION Area of Interest(Aop O C The soil surveys that comprise your AOI were mapped at 0 Area of Interest(AOI) CID 1:15,800. Soils m D Warning:Soil Map may not be valid at this scale. Soil Rating Polygons Not rated or not available Enlargement of maps beyond the scale of mapping can cause A 13 misunderstanding of the detail of mapping and accuracy of soil O AID water Features line placement.The maps do not show the small areas of e r Streams and canals contrasting soils that could have been shown at a more detailed scale. Transportation Q BID 1+4 Rails Please rely on the bar scale on each map sheet for map Q c measurements. Interstate Highways Q CID US Routes Source of Map: Natural Resources Conservation Service Q D Web Soil Survey URL: � Major Roads Coordinate System: Web Mercator(EPSG:3857) 0 Not rated or not available r.a. Local Roads Maps from the Web Soil Survey are based on the Web Mercator Soil Rating Lines Background projection,which preserves direction and shape but distorts .v A distance and area.A projection that preserves area,such as the Aerial Photography Albers equal-area conic projection,should be used if more ,.y AID accurate calculations of distance or area are required. ..� B This product is generated from the USDA-NRCS certified data as .y BID of the version date(s)listed below. ,wyo c Soil Survey Area: Essex County,Massachusetts,Southern Part Survey Area Data: Version 13,Sep 14,2016 .� CID Soil map units are labeled(as space allows)for map scales ,y D 1:50,000 or larger. . ,. Not rated or not available Date(s)aerial images were photographed: Aug 10,2014—Aug 25,2014 Soil Rating Points ® A The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background ® AID imagery displayed on these maps.As a result,some minor e B shifting of map unit boundaries may be evident. BID USDA Natural Resources Web Soil Survey 3/17/2017 Conservation Service National Cooperative Soil Survey Page 2 of 4 IIID I� � � � � � I. � � I. ■■� I. r - r � � � Hydrologic Soil Group—Essex County,Massachusetts,Southern Part Ci Technology Way,Salem,MA Hydrologic Soil Group Hydrologic Sol[Group—Summary by Map Unit—Essex County,Massachusetts,Southern Part(MA60a) SII Map unit symbol Map unit name Rating Acres In AO1 Percent of AO1 102C Chatfield-Hollis-Rock B 16.2 53.5% outcrop complex,0 to 15 percent slopes 102E Chatfeltl-Hollis-Rock D 13.6 45.1 outcrop Complex,15 to 35 percent slopes 724C Hollis-Urban lantl-Rock 0.4 1.4% - outcrop complex, sloping Totals for Area of Interest 30.3 100.0 Natural Resources Web Soil Survey 3/17/2017 1111110 Conservation Service National Cooperative Soil Survey Page 3 of 4 r r r r r �■ r� ■� r r r r r r r r r� r r Hydrologic Soil Group—Essex County,Massachusetts,Southern Part #1 Technology Way,Salem,MA Description Hydrologic soil groups are based on estimates of runoff potential.Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation,are thoroughly wet,and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups(A,B,C,and D)and three dual classes(A/D,B/D,and C/D).The groups are defined as follows: Group A.Soils having a high infiltration rate(low runoff potential)when thoroughly wet.These consist mainly of deep,well drained to excessively drained sands or gravelly sands.These soils have a high rate of water transmission. Group B.Soils having a moderate infiltration rate when thoroughly wet.These consist chiefly of moderately deep or deep,moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C.Soils having a slow infiltration rate when thoroughly wet.These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture.These soils have a slow rate of water transmission. Group D.Soils having a very slow infiltration rate(high runoff potential)when thoroughly wet.These consist chiefly of clays that have a high shrink-swell potential,soils that have a high water table,soils that have a claypan or clay layer at or near the surface,and soils that are shallow over nearly impervious material.These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group(A/D,B/D,or C/D),the first letter is for drained areas and the second is for undrained areas.Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method:Dominant Condition Component Percent Cutoff None Specified Tie-break Rule:Higher TsM Natural Resources Web Soil Survey 3/17/2017 conservation Service National Cooperative Soil Survey Page 4 of 4 1 � Section B Existing Condition Watershed Analysis 1 1 Ei E2 E3 E4 ES E6 E7 E8 E9 E10 Existing addition m d Iding main door NW parka g W pi rking roatl W road N road5 wo s SEryarking ' 1L 2L to Technology Way to Swetlantl 3L Total Subcat Reach Pon Link Routing Diagram for ex-technology a Prepared by Microsoft, Printed 4/11/2017 HydroCAD®10.00-19 sin 03206 ©2016 HydroCAD Software Solutions LLC ' ex-technology Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (sq-ft) (subcatchment-numbers) 994 69 50-75% Grass cover, Fair, HSG B (E3, E4, E8) 1,159 84 50-75% Grass cover, Fair, HSG D (E3, E4, E6, E8) 2,124 61 >75% Grass cover, Good, HSG B (E3, E4, E5) 131 80 >75% Grass cover, Good, HSG D (E4) ' 5,618 83 Brush, Poor, HSG D (E7, E8) 11,928 86 Fallow, bare soil, HSG B (E10, E3, E4, E5, E9) 4,244 94 Fallow, bare soil, HSG D (E3, E4) ' 429 98 Paved parking, HSG B (E3, E4, E5, E6, E8) 1,192 98 Paved parking, HSG D (E4, E6, E8) 20,933 98 Paved roads w/curbs & sewers, HSG B (E10, E3, E4, E5, E7, E9) ' 11,759 98 Paved roads w/curbs & sewers, HSG D (E3, E4, E5, E6, E7, E8) 51,770 98 Roofs, HSG B (E1, E2) 0 98 Roofs, HSG D (E2) 2,096 98 Unconnected pavement, HSG D (E7, E8) 27,350 60 Woods, Fair, HSG B (E% E5, E7, E9) 9,087 79 Woods, Fair, HSG D (E7, E9) ' 150,813 88 TOTAL AREA 1 ex-technology Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 O 2016 HydroCAD Software Solutions LLC Paae 3 ' Soil Listing (all nodes) Area Soil Subcatchment (sq-ft) Group Numbers 0 HSG A ' 115,528 HSG B E1, E10, E2, E3, E4, E5, E6, E7, E8, E9 0 HSG C 35,285 HSG D E2, E3, E4, E5, E6, E7, E8, E9 ' 0 Other 150,813 TOTAL AREA I , 1 ' 1 ex-technology 1 Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) ' HSG-A HSG-B HSG-C HSG-D Other Total Ground (sq-ft) (so,-ft) (sq-ft) (so,-ft) (so,-ft) (sq-ft) Cover 0 994 0 1,159 0 2152 50-75% Grass 1 cover, Fair 0 2,124 0 131 0 2,255 >75% Grass cover, Good 1 0 0 0 5,618 0 5,618 Brush, Poor 0 11,928 0 4,244 0 16,172 Fallow, bare soil 0 429 0 1,192 0 1,621 Paved parking 1 0 20,933 0 11,759 0 37,692 Paved roads w/curbs & sewers ' 0 51,770 0 0 0 51,770 Roofs 0 0 0 2,096 0 2,096 Unconnected pavement 1 0 27,350 0 9,087 0 36,437 Woods, Fair 0 115,528 0 35,285 0 150,813 TOTAL AREA 1 1 1 1 1 1 1 1 ' ex-technology Type ll/24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HvdroCAD Software Solutions LLC Page 5 ' Time span=0.00-44.00 hrs, dt=0.05 hrs, 881 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment E1: Existing addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=2.87" Tc=6.0 min CN=98 Runoff=1.34 cfs 4,733 cf ' Subcatchment E10: SE parking Runoff Area=8,023 sf 39.75% Impervious Runoff Depth=1.60" Tc=6.0 min CN=84 Runoff=0.34 cfs 1,069 cf Subcatchment E2: main building Runoff Area=31,964 sf 100.00% Impervious Runoff Depth=2.87" Tc=6.0 min CN=98 Runoff=2.15 cfs 7,639 cf II ' Subcatchment E3: by main door Runoff Area=4,375 sf 43.12% Impervious Runoff Depth=1.99" Tc=6.0 min CN=89 Runoff=0.23 cfs 726 cf ' Subcatchment E4: NW parking Runoff Area=12,121 sf 46.96% Impervious Runoff Depth=2.08" Tc=6.0 min CN=90 Runoff=0.66 cfs 2,097 cf Subcatchment E5: W parking Runoff Area=17,453 sf 64.24% Impervious Runoff Depth=2.26" Tc=6.0 min CN=92 Runoff=1.01 cfs 3,281 cf Subcatchment E6: E road Runoff Area=3,217 sf 88.13% Impervious Runoff Depth=2.65" Tc=6.0 min CN=96 Runoff=0.21 cfs 711 cf Subcatchment E7: W road Runoff Area=13,997 sf 48.56% Impervious Runoff Depth=1.99" Flow Length=128' Tc=9.8 min CN=89 Runoff=0.65 cfs 2,322 cf Subcatchment E8: N road Runoff Area=5,449 sf 66.50% Impervious Runoff Depth=2.35" Tc=6.0 min CN=93 Runoff=0.33 cfs 1,067 cf Subcatchment E9: S woods RunoffArea=34,408 sf 3.41% Impervious Runoff Depth=0.64" Flow Length=193' Tc=12.1 min CN=67 Runoff=0.39 cfs 1,822 cf ' Link 1 L: to Technology Way Inflow=6.51 cfs 22,575 cf Primary=6.51 cfs 22,575 cf ' Link 2L: to S wetland Inflow=0.63 cfs 2,891 cf Primary=0.63 cfs 2,891 cf ' Link 3L: Total Inflow=7.10 cfs 25,466 cf Primary=7.10 cfs 25,466 cf Total Runoff Area= 150,813 sf Runoff Volume= 25,466 cf Average Runoff Depth = 2.03" 41.53% Pervious = 62,635 sf 58.47% Impervious = 88,178 sf 1 1 ex-technology Type 11124-hr 2 Year Rainfa/1=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment E1: Existing addition Runoff = 1.34 cfs @ 12.09 hrs, Volume= 4,733 cf, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (sf) CN Description 19,805 98 Roofs, HSG B ' 19,805 100.00% Impervious Area Tc Length Slope Velocity Capacity Description ' (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, direct Subcatchment E1: Existing addition Hydrograph 1.34 cfs I —Runoff ' RUnoff_ .34 dfs hr 11 ' f reI-:19M5 sf Volurie::4,733 df 2 Rurofft rr C i 1 ICA 9 I I 0 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) II ' ex-technology Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Pam ' Summary for Subcatchment E10: SE parking Runoff 0.34 cfs @ 12.09 hrs, Volume= 1,069 cf, Depth= 1.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" ' Area (sf) CN Description 3,190 98 Paved roads w/curbs &sewers, HSG B ' 2,695 86 Fallow, bare soil, HSG B 2,139 60 Woods, Fair, HSG B 8,023 84 Weighted Average 4,834 60.25% Pervious Area 3,190 39.75% Impervious Area ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, direct Subcatchment E10: SE parking Hydrograph ' 0.36 0.34 cfs Runoff 0.34- 0.32- 0,3 .340.320.3 0.28 0.26 11 0.24 eal N 0.22 0.2 0 0.18 Af I ' LL 0.16 -0.14 0.12 0.1 0:08 0.06 ' 0.04 0.02 0 E I L L Ell 0 1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 3132 33 34 35 36 37 38 39 4 0 4142 43 44 ' Time (hours) ex-technology Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 8 ' Summary for Subcatchment E2: main building ' Runoff = 2.15 cfs @ 12.09 hrs, Volume= 7,639 cf, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" ' Area (sf) CN Description 31,964 98 Roofs, HSG B 0 98 Roofs, HSG D 31,964 98 Weighted Average 31,964 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) ' 6.0 Direct Entry, direct Subcatchment E2: main building Hydrograph 2.15 cfs —Runoff ' 20. Type 11 rll' J2 f 1= , 1 ' rl 30 ,94 f 1 LL ,6 f ' Tc=S.( i 1,14=98 L 1111 111 1 0 0 1 2 3 4 5 6 7 8 9 1011 12 13141516 1718192021 222324252627282930.3'1".3'2..3'3.3'4.35.363i383i4041 424344 Time (hours) ex-technology Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 9 ' Summary for Subcatchment E3: by main door Runoff = 0.23 cfs @ 12.09 hrs, Volume= 726 cf, Depth= 1.99" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" ' Area (sf) CN Description 25 69 50-75% Grass cover, Fair, HSG B ' 1,610 98 Paved roads w/curbs & sewers, HSG B 136 98 Paved parking, HSG B 537 61 >75% Grass cover, Good, HSG B ' 957 86 Fallow, bare soil, HSG B 162 84 50-75% Grass cover, Fair, HSG D 140 98 Paved roads w/curbs & sewers, HSG D 808 94 Fallow, bare soil, HSG D 4,375 89 Weighted Average 2,489 56.88% Pervious Area 1,887 43.12% Impervious Area ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, direct Subcatchment E3: by main door ' Hydrograph o.zs 024 0.23 cfs Runoff 0.23 ' 0.22 0.21 0.2 0.19 — r— ' 0.18 0.17 , 0.16 0.15 ' 0.14 V ' 0.13 0 0.12 a 0.11 0.1 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.01 o 0 1 2 3 4 5 6 7 8 9 10 1112131415161718 19202122232425 2627282930313233 3435363738394041424344 Time (hours) 1 ex-technology Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 10 1 Summary for Subcatchment E4: NW parking 1 Runoff = 0.66 cfs @ 12.09 hrs, Volume= 2,097 cf, Depth= 2.08" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" 1 Area (sf) CN Description 2,835 98 Paved roads w/curbs & sewers, HSG B 1 968 69 50-75% Grass cover, Fair, HSG B 111 98 Paved parking, HSG B 1,280 61 >75% Grass cover, Good, HSG B 1 228 86 Fallow, bare soil, HSG B 2,715 98 Paved roads w/curbs &sewers, HSG D 385 84 50-75% Grass cover, Fair, HSG D 31 98 Paved.parking, HSG D 1 131 80 >75% Grass cover, Good, HSG D 3,436 94 Fallow, bare soil, HSG D 12,121 90 Weighted Average 1 6,429 53.04% Pervious Area 5,692 46.96% Impervious Area 1 Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, direct(calc 3.7) 1 Subcatchment E4: NW parking Hydrograph 1 07 0.66 cfs Runoff 0.65 1111 1 11 11 0.5511 h-r- 0.5 1 0.45 Runf : : 1 1 f _ H 0.4 V 1 ii 0.35 ' 1 LL 0.3 0.25 IO2 II 15 0.15 0.1 1 0.05 0 0 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 1 Time (hours) 1 I � ex-technology Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 11 Summary for Subcatchment E5: W parking ' Runoff = 1.01 cfs @ 12.09 hrs, Volume= 3,281 cf, Depth= 2.26" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (sf) CN Description 10,579 98 Paved roads w/curbs & sewers, HSG B 862 60 Woods, Fair, HSG B 5,071 86 Fallow, bare soil, HSG B 180 98 Paved parking, HSG B ' 307 61 >75% Grass cover, Good, HSG B 453 98 Paved roads w/curbs & sewers, HSG D 17,453 92 Weighted Average 6,241 35.76% Pervious Area 11,212 64.24% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, direct i ' Subcatchment E5: W parking Hydrograph 1.01 cfs Runoff riiofjf1 .01 I hr 2 ear R a f 'I & 1 NR u nof f Ar f 1,2 31 df ' f t� 6" C 6. I 9 0 0 1 2 3 4 5 6 7 8 9 10 1112 13 1415 16 17 18 19 20 212223 24 2526 27 2829 3031 32 33 34 35 36 37 38 39404142 4344 Time (hours) ex-technology Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 12 ' Summary for Subcatchment E6: E road Runoff = 0.21 cfs @ 12.09 hrs, Volume= 711 cf, Depth= 2.65' Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" ' Area (so CN Description 0 98 Paved parking, HSG B ' 382 84 50-75% Grass cover, Fair, HSG D 780 98 Paved parking, HSG D 2,055 98 Paved roads w/curbs & sewers, HSG D ' 3,217 96 Weighted Average 382 11.87% Pervious Area 2,835 88.13% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Direct Subcatchment E6: E road Hydrograph 0.23 022 0.21 cfs —Runoff 0.21 ' 0.299999 5L 0.19 _ 0.18 0.17 0.15 0.15 r 0.14 m 0.13 ' 0.12 7 Sf 0 0.11 e- 0.1 74 0.09 _ A 10 0.08 0.07 0.06 0.05 ' 0.04 0.03 �I 0.02 0.01 0M LL , 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ex-technology Type 11124-hr 2 Year Rainfall=3.10" ' Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HvdroCAD Software Solutions LLC Paae 13 ' Summary for Subcatchment E7: W road ' Runoff = 0.65 cfs @ 12.14 hrs, Volume= 2,322 cf, Depth= 1.99" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (so CN Description 1,546 98 Paved roads w/curbs &sewers, HSG B ' 468 60 Woods, Fair, HSG B 4,023 83 Brush, Poor, HSG D 1,266 98 Unconnected pavement, HSG D 3,985 98 Paved roads w/curbs & sewers, HSG D 2,710 79 Woods, Fair, HSG D 13,997 89 Weighted Average ' 7,200 51.44% Pervious Area 6,796 48.56% Impervious Area 1,266 18.62% Unconnected t Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.3 50 0.1700 0.09 Sheet Flow, Sheet Woods: Dense underbrush n= 0.800 P2= 3,10" 0.2 19 0.3400 1.46 Shallow Concentrated Flow, Slope Forest w/Heavy Litter Kv= 2.5 fps ' 0.3 59 0.0200 2.87 Shallow Concentrated Flow, paved Paved Kv= 20.3 fps 9.8 128 Total t 1 II , ex-technology Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD0 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 14 Subcatchment E7: W road Hydrograph ' 0.7 0.65 cfs �Runoff 0.65 111 1 ' 0.6 — 0.55 0.5 laiTla 1.1 lo ,tl0.45 N e 7 f 0.4 3 0.35 f' VcI rm�e 2 f n u. 0.3 111 f it I=MCI 0.25 ' ' 0.2 0.15 0.1 U I-- 2N=l 0.05 —1 11L 0 ' 0 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 1 ex-technology Type ///24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 15 tSummary for Subcatchment E8: N road ' Runoff = 0.33 cfs @ 12.09 hrs, Volume= 1,067 cf, Depth= 2.35' Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" 1' Area (sf) CN Description 2 98 Paved parking, HSG B ' 0 69 50-75% Grass cover, Fair, HSG B 2,411 98 Paved roads w/curbs & sewers, HSG D 380 98 Paved parking, HSG D 830 98 Unconnected pavement, HSG D 229 84 50-75% Grass cover, Fair, HSG D 1,596 83 Brush, Poor, HSG D 5,449 93 Weighted Average 1,825 33.50% Pervious Area 3,624 66.50% Impervious Area 830 22.91% Unconnected ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) ' 6.0 Direct Entry, Direct Subcatchment E8: N road Hydrograph 0.36 0.340.33 cfs Runoff 1 0.32 0.3 [Tr L33xfs- 0.28 t 0.26 '. 0.24 1 I 1 u 0.22 ,4 o.z ' 3 49 C 0.18 o f LL 0.16 ` 0.14 no i ' 0.12 i 0.1 0.08 ' 0.06 0.04 0.02 ' 0 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 ex-technology Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment E9: S woods Runoff = 0.39 cfs @ 12.20 hrs, Volume= 1,822 cf, Depth= 0.64" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (sf) CN Description 23,881 60 Woods, Fair, HSG B ' 1,173 98 Paved roads w/curbs & sewers, HSG B 2,977 86 Fallow, bare soil, HSG B 6,377 79 Woods, Fair, HSG D ' 34,408 67 Weighted Average 33,235 96.59% Pervious Area 1,173 3.41% Impervious Area ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 9.5 50 0.1600 0.09 Sheet Flow, sheet ' Woods: Dense underbrush n= 0.800 P2= 3.10" 2.6 143 0.1300 0.90 Shallow Concentrated Flow, woods Forest w/Heavy Litter Kv= 2.5 fps 12.1 193 Total Subcatchment E9: S woods ' Hydrograph 0.42 0.4 0.39 cfs Runoff ' 0.3 '.. 0.366 0.34 0.32 0.3 a I 0 a .28 0.26 ' 2 0.24 0.22 - 0 0.2 ` 0.18 rr ' 0.16 17 0.14 0.12 0.1 0.06 0.06 0.04 0.02 o 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1617 18 19 20 2122 23 24 25 26 27 28 29 30 3132 33 34 35 36 37 38 39 40 4142 43 44 Time (hours) 1 t ex-technology Type ///24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 17 Summary for Link 1 L: to Technology Way ' Inflow Area = 108,381 sf, 77.33% Impervious, Inflow Depth = 2.50" for 2 Year event Inflow 6.51. cfs @ 12.09 hrs, Volume= 22,575 cf Primary - 6.51 cfs @ 12.09 hrs, Volume= 22,575 cf, Atten= 0%, Lag= 0.0 min ' Primary outflow= Inflow, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Link 1 L: to Technology Way ' Hydrograph 7 6.51 cfs _Inflow ,.,. Primary 6 1 5 Irlih i f 4 t 3 0 LL 3- 2 1 0 0 1 2 3 4 5 6 7 8 9 1 61718 031323 33 43 53 63 73 83 9404 4 Time (hours) 1 ' ex-technology Type /// 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 18 ' Summary for Link 2L: to S wetland ' Inflow Area = 42,432 sf, 10.28% Impervious, Inflow Depth = 0.82" for 2 Year event Inflow 0.63 cfs @ 12.15 hrs, Volume= 2,891 cf Primary - 0.63 cfs @ 12.15 hrs, Volume= 2,891 cf, Atten= 0%, Lag= 0.0 min ' Primary outflow= Inflow, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Link 2L: to S wetland ' Hydrograph 0.7 0.65 0.63 cfs F--1 n-f i.—w Primary 0.6 0,55-, — ' 0.5-' In 1 of JI 0.45 ' 0.4 3 0:35 ` 0.3 ' 0.25 0.2 ' 0.15 0.1 0.05 ' 0 0 1 2 3 4 5 6 78 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 ex-technology Type //124-hr 2 Year Rainfall=3.10" ' JY Yp Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 19 Summary for Link 3L: Total ' Inflow Area = 150,813 sf, 58.47% Impervious, Inflow Depth = 2.03" for 2 Year event Inflow 7.10 cfs @ 12.09 hrs, Volume= 25,466 cf Primary = 7.10 cfs @ 12.09 hrs, Volume= 25,466 cf, Atten= 0%, Lag= 0.0 min ' Primary outflow= Inflow, Time Span= 0.00-44.00 hrs, dt= 0.05 hrs Link 3L: Total ' Hydrograph Z10 cfs F--1-f--w 7' PMUY I rat f l ' 5 N ' 2 4 LL 3 2 1 I � ° 0 1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 1920 21 2223 24 25 262728 2930 3132 33 34 3536 37 38 3940 4142 43 44 Time (hours) ex-technology Type 111 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 1 ' Time span=0.00-44.00 hrs, dt=0.05 hrs, 881 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN ' Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment E1: Existing addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=4.36" Tc=6.0 min CN=98 Runoff=2.00 cfs 7,202 cf Subcatchment Ell 0: SE parking Runoff Area=8,023 sf 39.75% Impervious Runoff Depth=2.91" Tc=6.0 min CN=84 Runoff=0.61 cfs 1,944 cf ' Subcatchment E2: main building Runoff Area=31,964 sf 100.00% Impervious Runoff Depth=4.36" Tc=6.0 min CN=98 Runoff=3.22 cfs 11,624 cf ' Subcatchment E3: by main door Runoff Area=4,375 sf 43.12% Impervious Runoff Depth=3.39" Tc=6.0 min CN=89 Runoff=0.38 cfs 1,236 cf ' Subcatchment E4: NW parking Runoff Area=12,121 sf 46.96% Impervious Runoff Depth=3.49" Tc=6.0 min CN=90 Runoff=1.08 cfs 3,527 cf ' Subcatchment E5: W parking Runoff Area=17,453 sf 64.24% Impervious Runoff Depth=3.70" Tc=6.0 min CN=92 Runoff=1.62 cfs 5,380 cf Subcatchment E6: E road Runoff Area=3,217 sf 88.13% Impervious Runoff Depth=4.14" Tc=6.0 min CN=96 Runoff=0.32 cfs 1,109 cf Subcatchment E7: W road Runoff Area=13,997 sf 48.56% Impervious Runoff Depth=3.39" Flow Length=128' Tc=9.8 min CN=89 Runoff=1.08 cfs 3,954 cf Subcatchment E8: N road Runoff Area=5,449 sf 66.50% Impervious Runoff Depth=3.81" ' Tc=6.0 min CN=93 Runoff=0.52 cfs 1,728 cf Subcatchment E9: S woods Runoff Area=34,408 sf 3.41% Impervious Runoff Depth=1.53" Flow Length=193' Tc=12.1 min CN=67 Runoff=1.08 cfs 4,387 cf ' Link 1 L: to Technology Way Inflow=10.13 cfs 35,760 cf Primary=10.13 cfs 35,760 cf Link 2L: to S wetland Inflow=1.55 cfs 6,331 cf Primary=1.55 cfs 6,331 cf Link 3L: Total Inflow=11.56 cfs 42,091 cf Primary=11.56 cfs 42,091 cf ' Total Runoff Area= 150,813 sf Runoff Volume=42,091 cf Average Runoff Depth = 3.35" 41.53% Pervious = 62,635 sf 58.47% Impervious =88,178 sf ex-technology Type 11124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 2 Subcatchment E1: Existing addition Hydrograph ' 2.00 Cf5 Runoff 2 RUM 1 � .o dsII 1) FIE r ' N 1 f r ::' I'8 f I I)IM ,2 f urcff 0 ept " Tc=6.(l i� 14=98 ° 0 1 2 3 4 5 6 7 8 9 101112131415161718192021222324 A Ai7 A i930 31 32 33 34 35 36 37 38 3940 4142 4344 ' Time (hours) Subcatchment E10: SE parking ' Hydrograph 0.65 0.61 ds —Runoff 96 f 1 f 0.55 0.5 0.45 0.4 ' VI 9V 0.35 3 0 7 E 0.3 0.25 RujOcf 91" 0.2 ' 0.15 0.05 1 ° 0 1 2 3 4 5 6 7 8 9 10 1112131415161718 1920212223242526272829303132333435363738394041424344 Time (hours) IL ' ex-technology Type /// 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 3 ' Subcatchment E2: main building Hydrograph ' 3.22 cfs —Runaff ' ' 3 1313 III hr ar Fzinfall=4 C"' „ 2 a= 6f 3Ft I Of Vc luir e=11 ' LL D h= I� in 1 0 ' 0 1 2 3 4 5 6 7 8 9 111112 11141516 17111192021222324212627 21293031 323334 35363738 394041424144 Time (hours) ' Subcatchment E3: by main door Hydrograph 0.42- 0.4 0.38 cfs Runaff ' 0.38 0.36 0.34 ' 0.32 0.3 0.28 0.26 ' 0.2 — 0.222 0 0.2 u 0.18 _ ' 0.16 — Xv- 0.14 0.12 ' 0.1 ' 0.08 0.06 'JE 0.04 ' 0.02 0 0 72 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 1 ex-technology Type /// 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 O 2016 HydroCAD Software Solutions LLC Page 4 1 Subcatchment E4: NW parking Hydrograph 1 1.08 cfs i —Runoff 1 1 I r ! 10 earilarf II �" 1Runcff r a:: ,1 1 sf 1 LL f � t ,5 f ur ,. c 6. i I1 9 ° 0 1 2'3 4 5 6 7 8 9 1011 12 13141516 17181920212223 24252627 28293031 323334 35363738 394041424344 1 Time (hours) Subcatchment E5: W parking 1 Hydrograph 1.62 cfs —Runoff iF Unoff:= .6 2 df s � 1 T 1 f IL drl i F , AM fl .: i,33 cf ArurcLL f t - 10" 1 Tc=6.( ni n 1 9 i 1 ° 0 1 2 3 4 5 6 7 8 9 10 1112 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 4142 43 44 Time (hours) i i ' ex-technology Type 11124,hr 10 .Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 5 ' Subcatchment E6: E road Hydrograph 0.34 0.32 cfs Runoff 0.32 0.3 t 0.28 0.26 AE r 0.24 i. .I u _ 0.22 _ m 0.2 U 0.18 91 0.14 11 0.12 ' 0.1 I 0.08 0.06 ' 0.04 0.02 i 0 I ' 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 3132 33 34 35 36 37 38 39 40 4142 43 44 Time (hours) ' Subcatchment E7: W road Hydrograph 1.08 cfs Runoff TF ' Type III r 11) Year i 11= rat 7 f ,I e f LL f D h=3 R Runoff Lt = ' in OIS 9 o 0 1 2 3 4 5 6 7 8 9 101112 13141516 171819202122232425262728293031 32333435383738394041424344 Time (hours) t ex-technology Type 111 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Pape 6 ' Subcatchment E8: N road Hydrograph ' 0.55 0.52 cfs Runcff 051 RLin f 5 f 0.45 1 rI 0.4 rN 1 0„ ' 0.35 f f 0 6.3 f I ,7 d ' F 0.25 Run fDepI v== 8'1" 0.2 L6 0.1 0.0s 0 ' 0 1 2 3 4 5 6 7 8 9 10 11 12 1314 15 16 1718 1920 212223 2425 2627 28 29 30 3132 33 34 35 36 37 38 3940 41424344 Time (hours) ' Subcatchment E9: S woods Hydrograph ' 1 1.0 80fs —Runoff TV rype III - r • " Year Rai III= y a=34, 08 f 1 o e f 11 Li ri c) I Depth=1 ,r ' F lo,v L. ricit —IS V i ' � I 7 1 ° 0 1 2 3 4 5 6 7 8 9 101112 13141516 171819202122232425262728293031 32333435363738394041424344 Time (hours) 1 1 ex-technology Type 11124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 7 ' Link 1L: to Technology Way Hydrograph t10.13 cfs —Inflcm- 10 _ 1—Primary Inf 1 f ' 9 - 8 I f ' 7 i -1 f N LL 5 4- 3-- 2 32 , 0 L: 2wm 2 ' 0 1 2 34 56 18 91011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) Link 21-: to S wetland Hydrograph ' - 1.55 cfs 1 F—Inflow—j Primary I � 1I I V O LL 0 -LL——— 0 1 2 3 4 5 6 7 8 9 101112131415 161718192021222324252627282930 1 23 363738394 7Z4344 Time (hours) I ' ex-technology Type /// 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 8 ' Link 3L: Total Hydrograph 1 12 11.56 cfs —Inflow Primary 10 N u 7 ' e o 6 LL 5 4 ' 3 2 0 RM"L ' 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 11 ex-technology Type ///24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 9 ' Time span=0.00-44.00 hrs, dt=0.05 hrs, 881 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN ' Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment E1: Existing addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=5.16" Tc=6.0 min CN=98 Runoff=2.35 cfs 8,521 cf Subcatchment E10: SE parking Runoff Area=8,023 sf 39.75% Impervious Runoff Depth=3.64" Tc=6.0 min CN=84 Runoff=0.76 cfs 2,433 cf ' Subcatchment E2: main building Runoff Area=31,964 sf 100.00% Impervious Runoff Depth=5.16" Tc=6.0 min CN=98 Runoff=3.79 cfs 13,752 cf ' Subcatchment E3: by main door Runoff Area=4,375 sf 43.12% Impervious Runoff Depth=4.16" Tc=6.0 min CN=89 Runoff=0.46 cfs 1,515 cf Subcatchment E4: NW parking Runoff Area=12,121 sf 46.96% Impervious Runoff Depth=4.26" Tc=6.0 min CN=90 Runoff=1.30 cfs 4,306 cf Subcatchment E5: W parking Runoff Area=17,453 sf 64.24% Impervious Runoff Depth=4.48" Tc=6.0 min CN=92 Runoff=1.94 cfs 6,516 cf Subcatchment E6: E road Runoff Area=3,217 sf 88.13% Impervious Runoff Depth=4.93" Tc=6.0 min CN=96 Runoff=0.38 cfs 1,322 cf Subcatchment E7: W road Runoff Area=13,997 sf 48.56% Impervious Runoff Depth=4.16" ' Flow Length=128' Tc=9.8 min CN=89 Runoff=1.31 cfs 4,847 cf Subcatchment E8: N road Runoff Area=5,449 sf 66.50% Impervious Runoff Depth=4.59" ' Tc=6.0 min CN=93 Runoff=0.62 cfs 2,085 cf Subcatchment E9: S woods Runoff Area=34,408 sf 3.41% Impervious Runoff Depth=2.09" Flow Length=193' Tc=12.1 min CN=67 Runoff=1.52 cfs 5,984 cf ' Link 1L: to Technology Way Inflow=12.04 cfs 42,864 cf Primary=12.04 cfs 42,864 cf Link 2L: to S wetland Inflow=2.10 cfs 8,416 cf Primary=2.10 cfs 8,416 cf ' Link 3L: Total Inflow=13.99 cfs 51,280 cf Primary=13.99 cfs 51,280 cf ' Total Runoff Area = 150,813 sf Runoff Volume= 51,280 cf Average Runoff Depth =4.08" 41.53% Pervious =62,635 sf 58.47% Impervious = 88,178 sf ex-technology Type 111 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 10 Subcatchment E1: Existing addition Hydrograph ' 2.35 cfs —R.uneff 1 . 2 35 I s 25 Yeall, Riif, ll . 1R u n of: r;� � ,8 5 sf ,5 1 df ' LL 11 1 — c 6. min 9 1 0 ' 0 1 2 3 4 5 6 7 8 9 10 1112 13 1415 16 17 18 1920 2122 23 24252627 282930 31 3233 34 35 36 3738 39404142 43 44 Time (hours) ' Subcatchment E10: SE parking Hydrograph 0.85 0.8 0.76 cfs Runoff 0.75 0.7 0.65 0.6 0.55 I� 0.5 f ',I s 0,45 0 0.4 u 0.35 ' 0.3 0.25 Lt 0.2 0.15 0.1 ' 0.05 0 0 1 2 3 4 5 6 7 8 9 10 111213 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 3132 33 34 35 36 37 38 39 40 4142 43 44 Time (hours) i ex-technology Type 111 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 11 1 Subcatchment E2: main building Hydrograph 1 4- 3.79 cfs P,unoff n f 379 s ype III r 3 ar ainfall= " yD I Are a=3 96 f f I =1 �I 1 02 LL be, h= in 1 1 00, I � X18 0 1 0 1 2 3 4 5 6 7 8 9 111112 11141,516 171811212122112421212728293011 323314 35363738 394041424344 Time (hours) 1 Subcatchment E3: by main door Hydrograph o.s 0.48 0.46 cfs Runoff 046 0.44 0.42 Is 0.4 0.3 — 0.366 0.34 40-- 0.32 0.32 .2 — 0.28 0.26 0 0.24 16 u_ 0.22 _ r ' 0.2 — 0.18 0.16 0.14 1 0.12 0.1 0.08 0.06 0.04 1 0.02 0ol......... 22 M M . W� 0 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 1 ' ex-technology Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 12 Subcatchment E4: NW parking ' Hydrograph ' 1 1.30 cfs e Runoff .3ef T I)Fpe I 4 tr Z5 "ear I = lis f r ,1 f It JID'ff V � 1 LL f t 34 61 c � 6. 1 I i g 1 04- 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ' Subcatchment E5: W parking Hydrograph 2 1.94 cfs I —Runoff 1Rill.III 94 df is 1244 r ' 25 e T 11yr�f 1,5 4 ., Cf A r 1:: 5 f u — 3 1 f o LLuric ft k4 rr ' Tc All din 1 9 0 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ' ex-technology Type 111 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 13 Subcatchment E6: E road Hydrograph 0.42 0.4 0.38 cfs Runoff 0.38 0.36 0.34 0,32 4 Fir 0.3 0.28 _ Orr ' 0.26 0.24 0.22 LL ' c 0.213 f—1 0.16 0.14 ' 0.12 0.1 0,08 0.06 - 0.04 0.02 �I 0 ' 0 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ' Subcatchment E7: W road Hydrograph 1.31 cfs �Runoff 1 11S ' Type III 2.4itir r.4.1 lear-Rainfc-111=5.4. rr Runoff Area=13,997Runolf f 3 e ° n I LL f Q h= I if th=lr ; .8 min MIN - 9 t �0001 6 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1920 212223 24252627 28293031 323334 35363738 39404142 4344 Time (hours) ex-technology Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 14 ' Subcatchment E8: N road Hydrograph 0.65 0.62 cfs Runeff 9.6Ur f - f 0.55 0.5 -- - -- 0.45 III n ' 0.4 U ' 0.35 f 0 0.3 u f 9" 0.25 IR 0.2- 0.15- al- 0.05 .20.150.10.05 0 0 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) Subcatchment E9: S woods rHydrograph 1.52 cfs �Runoff f s �T IIII � r ' ' 25 Year fall=54 3Runoff VcI e f LLDepth- ' FlowL. rigth =1193' in 7 o 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) r 1 ex-technology Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Pape 15 1 Link 1L: to Technology Way Hydrograph r 3 1 cis —inflow 12 —Primary CIO10 9 1 6 - N ` 7 i LL6 ' 4 3 I 2 — 1 1 0 1 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 Link 2L: to S wetland Hydrograph 2.10 cfs F—Inflow —Primary 2 111111 WAR! 4 A: st 1 ' F11 i1xiaTT - 1 1 3 0 LL 1 1 1 0 0 1 2 3 4 5 6 7 8 9 10111 21 31 4151617181920212223242 526272829303132333435363738394041424344 Time (hours) 1 ex-technology Type 111 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 16 Link 3L: Total Hydrograph 5 13.99 cfs 14 —Primary 13 - 12 11- 10 N 9 U v 8 LL6 S 4 3- 2 I 1 1 L— oo MW 0 0 1 2 3 4 5 6 7 8 91011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ex-technology Type ///24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 17 ' Time span=0.00-44.00 hrs, dt=0.05 hrs, 881 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN 1 Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment E1: Existing addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=6.26" Tc=6.0 min CN=98 Runoff=2.83 cfs 10,334 cf Subcatchment E10: SE parking Runoff Area=8,023 sf 39.75% Impervious Runoff Depth=4.67" Tc=6.0 min CN=84 Runoff=0.97 cfs 3,120 cf ' Subcatchment E2: main building Runoff Area=31,964 sf 100.00% Impervious Runoff Depth=6.26" Tc=6.0 min CN=98 Runoff=4.57 cfs 16,678 cf Subcatchment E3: by main door Runoff Area=4,375 sf 43.12% Impervious Runoff Depth=5.22" Tc=6.0 min CN=89 Runoff=0.57 cfs 1,904 cf ' Subcatchment E4: NW parking Runoff Area=12,121 sf 46.96% Impervious Runoff Depth=5.33" Tc=6.0 min CN=90 Runoff=1.61 cfs 5,387 cf ' Subcatchment E5: W parking Runoff Area=17,453 sf 64.24% Impervious Runoff Depth=5.56" Tc=6.0 min CN=92 Runoff=2.38 cfs 8,089 cf ' Subcatchment E6: E road Runoff Area=3,217 sf 88.13% Impervious Runoff Depth=6.03" Tc=6.0 min CN=96 Runoff=0.46 cfs 1,615 cf Subcatchment E7: W road Runoff Area=13,997 sf 48.56% Impervious Runoff Depth=5.22" Flow Length=128' Tc=9.8 min CN=89 Runoff=1.63 cfs 6,089 cf Subcatchment E8: N road Runoff Area=5,449 sf 66.50% Impervious Runoff Depth=5.68" Tc=6.0 min CN=93 Runoff=0.75 cfs 2,578 cf Subcatchment E9: S woods Runoff Area=34,408 sf 3.41% Impervious Runoff Depth=2.91" Flow Length=193' Tc=12.1 min CN=67 Runoff=2.17 cfs 8,353 cf Link 1L: to Technology Way Inflow=14.67 cfs 52,675 cf Primary=14.67 cfs 52,675 cf Link 2L: to S wetland Inflow=2.90 cfs 11,473 cf Primary=2.90 cfs 11,473 cf Link 3L: Total Inflow=17.36 cfs 64,148 cf Primary=17.36 cfs 64,148 cf ' Total Runoff Area= 150,813 sf Runoff Volume = 64,148 cf Average Runoff Depth = 5.10" 41.53% Pervious =62,635 sf 58.47% Impervious = 88,178 sf 1 ' ex-technology Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 18 Subcatchment E1: Existing addition Hydrograph 1 3 2.83 cfs �Runoff u S r ar R i H= N 2 UlN a=1 5 f Runo lluir =1 ' .2 in 9 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 4142 43 44 Time (hours) Subcatchment E10: SE parking Hydrograph ' 1 0.97 cfs Runoff fi .s r II T I 1 f I f r ,0 f 1 f LL f t —I Ail„ 1 Tc=6.( in $ I 1 6 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) � 1 ex-technology Type /// 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 19 Subcatchment E2: main building Hydrograph 5- 4.57 cfs � —Runoff f S 4 y III lir ' ar 3 w Of lu =1 IR D 6 c ' LL 2 'f h=6 „ in 8 1 6 0 1 2 3 4 5 6 7 8 9 101112 13141516 17181920212223 24252627 28293031 323 3 6 3738 39 404142 4344 Time (hours) ' Subcatchment E3: by main door Hydrograph ' 0.6 0.57 cfsRunoff 0.55 6.45 i f I 50" 0.4 6.35 f 3 f 0 0.3 LLq rl � 6.25 t U2- i I 0.2 0.15 0.1 0.05 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 3132 33 34 35 36 37 38 39 40 4142 43 44 Time (hours) 1 ex-technology Type 11124-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 20 Subcatchment E4: NW parking Hydrograph 1 1.61 cfs Runoff T I r 1 of fiI .. I 3 ,3$ f f t c 6. i 1 0 1 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ' Subcatchment E5: W parking Hydrograph 2.38cfs —Runoff u 3 2 1 f I i •' f �r , 1 If - ,0 f L - " 1 c=6.0 min 1 1,14=92 1 6 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 ex-technology Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 21 Subcatchment E6: E road Hydrograph 6.5 0.48 0.46 cfs �Runoff 0.46 0.44 6.42 f 0.4 0.38 0.36 ' 0.34 erl 0.32 0.3 f 0.28 — V 0.26 p 0.24 u 0.22 0.2 Run 0.16 ' 0.16 6.14 JrIk 0.12 0.1 ' 0.06 6.66 0.04 0.02 0 0 1 2 3 4 5 6 7 8 9 1011121314151617181920212223242526272829303132333435363738394041424344 Time (hours) ' Subcatchment E7: W road Hydrograph ' 1.63 cfs —Runoff n ¢ SSI III r 1100 Year Ii 11= " Flamolf rat 7sfl e .2 = 11 ' f lig 6 1 L I 0 1 2 3 4 5 6 7 8 9 1011 12 13141516 17181920212223242526272829363'1 3233343536 '041 ' 4344 Time (hours) ' ex-technology Type /// 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 22 ' Subcatchment E8: N road Hydrograph ' 0.8 0.75 cfs Runeff 0.75 0.7 — 0.65 - 0.6 r rl 0.55 0.5 i N ' v 0.45 0 0.4 f tj 14 Af I fi j 114 P: 9 JI' u. 0.35 u 168"] rf] 0.3 rl 0.25 0.2 0.15 77 ' 0.Lim 0.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 2122 23 24 25 26 27 28 29 30 3132 33 34 35 36 37 38 39 40 414243 44 Time (hours) Subcatchment E9: S woods ' Hydrograph 2.17 ds Runoff 2 Type III 24. hr ) Year !Rzinfa II= rr NRun o I Ar a=34 408 sf FlLUllQ CI e=8 253 d rr = F low Ler cIth=19T in 0 1 2 3 4 5 6 7 8 9 10 111241�l 171W '9L'2'122232425262728293031 323334 35363738394041424344 Time (hours) 1 ' ex-technology Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 23 Link 1L: to Technology Way Hydrograph i 6 15 14.67 cfs Primary 147nT 11 C -1- , r4444 Sf_ 3 12 11. 10 I s N 9 U 8 O LL 7 6 ' 4 Q 3 1 0 0 1 2 3 4 5 6 7 8 910111213141516171819202122232Q2526272829303132333435363738394041424344 Time (hours) Link 2L: to S wetland ' Hydrograph 3 2.90 cfs Inflow Primary I I i 1 2 2 N U 3 LL 1 I i 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19202122 2324 2526 2728 29 30 3132 3334 35 36 37 38 3940 41424344 Time (hours) I— ex-technology Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 24 ' Link 3L: Total Hydrograph 1s 18 17.36 cfs F--1 n-f I-- 17 Primary 16 -inf - - f ,5 14 13 — ' 12 1 in Y= 0 7 _N 11 10 0 9 LL 8 6 4 3 2 1 0 0 1 2 3 4 5 6 7 8 9 1011 121314151617181920212223242526272829303132333435363738394041424344 Time (hours) 1 1 1 ' 1 1 1 1 1 1 Section C 1 Proposed Condition Watershed Analysis 1 1 1 1 1 1 1 1 P1 P2 P4 P`3 P3A Existing Add 'on main wilding R d&parking proposeg addition Sub iP3A P5 P1I6 ' P7 5P 6P alon wetland loadidock ' 1 L driveway rooftop del tion roof}bp detention 2P to Technology Wa 4P Forebay cullet chambers 2L ' 3L to S wetland t Total 1 1 1 ' Subcat Reach Pon Link Routing Diagram for pr-technologyR Prepared by Microsoft, Printed 4/11/2017 HydroCAD®10.00-19 s/n 03206 0 2016 HydroCAD Software Solutions LLC t pr-technologyR Prepared by Microsoft Printed 4/11/2017 HydroCAD(D 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description ' (sq-ft) (subcatchment-numbers) 25 69 50-75% Grass cover, Fair, HSG B (P4) 1,032 84 50-75% Grass cover, Fair, HSG D (P4) ' 537 61 >75% Grass cover, Good, HSG B (P4) 1,751 83 Brush, Poor, HSG D (P4) 10,806 86 Fallow, bare soil, HSG B (P4, P5, P6, P7) ' 5,552 94 Fallow, bare soil, HSG D (P4, P7) 294 98 Paved parking, HSG B (P4) 1,086 98 Paved parking, HSG D (P4) 24,186 98 Paved roads w/curbs & sewers, HSG B (P4, P6, P7) 18,196 98 Paved roads w/curbs & sewers, HSG D (P4, P7) 1 76,879 98 Roofs, HSG B (P1, P2, P3, P3A) 2,343 98 Roofs, HSG D (P2, P3A) 2,066 98 Unconnected pavement, HSG D (P4) ' 2,771 60 Woods, Fair, HSG B (P4, P5) 3,295 79 Woods, Fair, HSG D (P4) 150,821 95 TOTAL AREA 1 t pr-technologyR Prepared by Microsoft Printed 4/11/2017 HydroCADG 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (sq-ft) GroHp Numbers 0 HSG A 115,499 HSG B P1, P2, P3, P3A, P4, P5, P6, P7 ' 0 HSG C 35,322 HSG D P2, P3A, P4, P7 0 Other ' 150,821 TOTAL AREA t 1 1 1 � pr-technologyR Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground (sq-ft) (sq-ft) (sq-ft) (sq-ft) (sq-ft) (sq-ft) cover 0 25 0 1,032 0 1,057 50-75% Grass cover, Fair ' 0 537 0 0 0 537 >75% Grass cover, Good ' 0 0 0 1,751 0 1,751 Brush, Poor 0 10,806 0 5,552 0 16,358 Fallow, bare soil 0 294 0 1,086 0 1,380 Paved parking t 0 24,186 0 18,196 0 42,382 Paved roads w/curbs& sewers t 0 76,879 0 2,343 0 79,223 Roofs 0 0 0 2,066 0 2,066 Unconnected pavement 0 2,771 0 3,295 0 6,067 Woods, Fair 0 115,499 0 35,322 0 150,821 TOTAL AREA pr-technologyR Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Pape 5 ' Pipe Listing (all nodes) Line# Node In-Invert Out-Invert Length Slope n Diam/Width Height Inside-Fill Number (feet) (feet) (feet) (ft/ft) (inches) (Inches) (inches) 1 2P 93.00 92.00 10.0 0.1000 0.011 4.0 0.0 0.0 2 4P 99.50 96.00 20.0 0.1750 0.011 4.0 0.0 0.0 1 i I I 1 I , ' pr-technologyR Type 111 24-hr 2 Year Rainfa/1=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 6 ' Time span=0.00-44.00 hrs, dt=0.03 hrs, 1468 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment P1: Existing Addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=2.87" Tc=6.0 min CN=98 Runoff=1.36 cfs 4,733 cf ' Subcatchment P2: main building Runoff Area=31,962 sf 100.00% Impervious Runoff Depth=2.87" Tc=6.0 min CN=98 Runoff=2.19 cfs 7,639 cf Subcatchment P3: proposed addition Runoff Area=21,578 sf 100.00% Impervious Runoff Depth=2.87" Tc=6.0 min CN=98 Runoff=1.48 cfs 5,157 cf ' Subcatchment P3A: Subcat P3A Runoff Area=5,877 sf 100.00% Impervious Runoff Depth=2.87" Tc=6.0 min CN=98 Runoff=0.40 cfs 1,404 cf Subcatchment P4: Road & parking Runoff Area=38,220 sf 63.76% Impervious Runoff Depth=2.45" ' Flow Length=165' Tc=10.6 min CN=94 Runoff=2.07 cfs 7,793 cf Subcatchment P5: along wetland Runoff Area=7,730 sf 0.00% Impervious Runoff Depth=1.14" ' Tc=6.0 min CN=77 Runoff=0.23 cfs 735 cf Subcatchment 136: loading dock Runoff Area=10,803 sf 79.57% Impervious Runoff Depth=2.65" Tc=6.0 min CN=96 Runoff=0.71 cfs 2,386 cf Subcatchment P7: driveway Runoff Area=14,845 sf 86.65% Impervious Runoff Depth=2.65" Tc=6.0 min CN=96 Runoff=0.98 cfs 3,279 cf ' Pond 2P: Forebay Peak Elev=93.96' Storage=495 cf Inflow=0.71 cfs 2,386 cf Outflow=0.29 cfs 2,385 cf ' Pond 4P: cultec chambers Peak EIev=100.05' Storage=1,508 cf Inflow=0.22 cfs 6,561 cf Discarded=0.01 cfs 1,561 cf Primary=0.21 cfs 4,499 cf Outflow=0.22 cfs 6,059 cf Pond 5P: rooftop detention Peak EIev=118.77' Storage=2,068 cf Inflow=1.48 cfs 5,157 cf Outflow=0.14 cfs 5,157 cf ' Pond 6P: rooftop detention Peak EIev=118.90' Storage=355 cf Inflow=0.40 cfs 1,404 cf Outflow=0.08 cfs 1,404 cf Link 1L: to Technology Way Inflow=6.37 cfs 23,444 cf Primary=6.37 cfs 23,444 cf Link 2L: to S wetland Inflow=0.54 cfs 7,619 cf ' Primary=0.54 cfs 7,619 cf Link 3L: Total Inflow=6.89 cfs 31,063 cf I ' Primary=6.89 cfs 31,063 cf Total Runoff Area = 150,821 sf Runoff Volume = 33,127 cf Average Runoff Depth =2.64" ' 17.09% Pervious = 25,770 sf 82.91% Impervious= 125,051 sf � 1 pr-technologyR Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment P1: Existing Addition Runoff = 1.36 cfs @ 12.08 hrs, Volume= 4,733 cf, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (sf) CN Description 19,805 98 Roofs, HSG B 19,805 100.00% Impervious Area Tc Length Slope Velocity Capacity Description ' (min) (feet) (ft/ft) (f/sec) (cfs) 6.0 Direct Entry, Direct ' Subcatchment P1: Existing Addition Hydrograph ' 1.36 cfs �Runoff Runo f=1 .36 cfs ' Type III 24-hr 2 Ye ir .0n#al - 1 w 01 All Runoff Area-, 19,805 sf R noffolum =4,733 cf LL Runoff D pth=2 87" c=6.0 in CN 98 0 5 10 15 20 25 30 35 40 Time (hours) I � ' pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment P2: main building Runoff = 2.19 cfs @ 12.08 hrs, Volume= 7,639 cf, Depth= 2.87" ' Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (sf) CN Description 31,962 98 Roofs, HSG B 0 98 Roofs, HSG D 31,962 98 Weighted Average 31,962 100.00% Impervious Area ' Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Direct Subcatchment 132: main building ' Hydrograph 2.19 cfs Runoff 2 Ty a III 24-hr 2 Year Rair1fall=3110" w unofArea-31,96 Sf Runoff olum =7,639 cf MUI U11' LL 11_ c=6.0 rnin CN 98 0 0 5 10 15 20 25 30 35 40 Time (hours) i pr-technologyR Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADG 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment P3: proposed addition Runoff = 1.48 cfs @ 12.08 hrs, Volume= 5,157 cf, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" ' Area (sf) CN Description 21,578 98 Roofs, HSG B ' 21,578 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) ' 6.0 Direct Entry, Direct Subcatchment P3: proposed addition ' Hydrograph 1.48 cfs —Runoff ' Runo f=1.48 cfs Type III 24-hr 2 Ye r Rainfall=3.10" Nunof Area:=21,57 B sf oR noff Volume=5,157 cf LL Runoff Dep th 2187" 1 Tc=6.0 rain 1 CNL98 1 ° L I I , �=,-- 6 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type Ill 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD ) 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Pape 10 ' Summary for Subcatchment P3A: Subcat NA Runoff = 0.40 cfs @ 12.08 hrs, Volume= 1,404 cf, Depth= 2.87" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (so CN Description 3,533 98 Roofs, HSG B ' 2,343 98 Roofs, HSG D 5,877 98 Weighted Average 5,877 100.00% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (f/sec) (cfs) 6.0 Direct Entry, direct ' Subcatchment P3A: Subcat P3A ' Hydrograph 0.44 0.42 0.40 cfs Runoff 0.4 0.38' Runo — fs- 0.36 ri 0.34 0.32 ly h 0.3 — YI— 0.28 H 0.26 f 0.24 0 0.22 — u02 u 0.2 0.18 — " 0.16 0.14 — n-- 00.1 — a., 0.08 ' 98— 0.06 0.04 0.02 0 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 11 ' Summary for Subcatchment P4: Road & parking Runoff = 2.07 cfs @ 12.14 hrs, Volume= 7,793 cf, Depth= 2.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (sf) CN Description 1,623 86 Fallow, bare soil, HSG B 294 98 Paved parking, HSG B 3,221 98 Paved roads w/curbs & sewers, HSG B 25 69 50-75% Grass cover, Fair, HSG B 537 61 >75% Grass cover, Good, HSG B ' 59 60 Woods, Fair, HSG B 5,528 94 Fallow, bare soil, HSG D 17,701 98 Paved roads w/curbs & sewers, HSG D ' 1,086 98 Paved parking, HSG D 2,066 98 Unconnected pavement, HSG D 1,032 84 50-75% Grass cover, Fair, HSG D 1,751 83 Brush, Poor, HSG D 3,295 79 Woods, Fair, HSG D 38,220 94 Weighted Average 13,851 36.24% Pervious Area 24,369 63.76% Impervious Area 2,066 8.48% Unconnected Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (f/sec) (cfs) 9.7 50 0.1500 0.09 Sheet Flow, sheet ' Woods: Dense underbrush n= 0.800 P2= 3.10" 0.3 15 0.1500 0.97 Shallow Concentrated Flow, shallow Forest w/Heavy Litter Kv= 2.5 fps 0.6 100 0.0200 2.87 Shallow Concentrated Flow, shallow ' Paved Kv= 20.3 fps 10.6 165 Total ' pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 12 ' Subcatchment P4: Road & parking Hydrograph ' 2.07 cfs �Runoff 2 uno c s Ty a III 24-hr 2 Year Rai fall=310" ' Runoff Are =38,220 sf 3Runoff olu a=7,7 3 cf 0 Depth- 45 low Length= 65' T(;=10.6 min C =94 01 L=2 LL I I "",j 0 5 10 15 A A 30 35 40 ' - Time (hours) 1 pr-technologyR Type 1/124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 13 Summary for Subcatchment P5: along wetland Runoff = 0.23 cfs @ 12.09 hrs, Volume= 735 cf, Depth= 1.14" ' Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (so CN Description 5,018 86 Fallow, bare soil, HSG B 2,712 60 Woods, Fair, HSG B 7,730 77 Weighted Average 7,730 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, direct ' Subcatchment P5: along wetland Hydrograph - 0.25 0.24 0.23 cfs RunoN 0.23 ' 0.22 . 0.21 9- 0.2 0.19 0.18 0.17 Yea Kaln =3. ' 0.16 0.15 0.14 Runo Area73 0.13 - 0 0.12 611off ii e- LL 0.11 0.1 0.09 RUH - ' 0.08 - - 0.07 0.06 0.057- 0.04 / / 0.03 0,02 0.01 0 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type ///24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 0 2016 HydroCAD Software Solutions LLC Page 14 Summary for Subcatchment P6: loading dock Runoff = 0.71 cfs @ 12.09 hrs, Volume= 2,386 cf, Depth= 2.65' Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 Year Rainfall=3.10" Area (so CN Description 2,207 86 Fallow, bare soil, HSG B ' 8,597 98 Paved roads w/curbs & sewers, HSG B 10,803 96 Weighted Average 2,207 20.43% Pervious Area 8,597 79.57% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) ' 6.0 Direct Entry, Direct Subcatchment P6: loading dock os Hydrograph 0.75 0.71 cfs Runoff 0.7 0.65 —Runo = •7 1 :cfs--- 0.6 e�l ' 0.55 05 er al a = -w� F 0.45 3 0.4 7-2-93 48 9JO 0 0: 0.35 ' 0.3 Ru ff D h= fz 0.25 (-j-rte 0.2 0.15 0.1 0.05 0 0 5 10 15 20 25 30 35 40 Time (hours) 1 ' pr-technologyR Type Ill 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 C 2016 HydroCAD Software Solutions LLC Page 15 Summary for Subcatchment P7: driveway Runoff = 0.98 cfs @ 12.09 hrs, Volume= 3,279 cf, Depth= 2.65' ' Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Type III 24-hr 2 YearRainfall=3.10" Area (sf) CN Description 12,368 98 Paved roads w/curbs & sewers, HSG B ' 1,959 86 Fallow, bare soil, HSG B 495 98 Paved roads w/curbs & sewers, HSG D 24 94 Fallow, bare soil, HSG D ' 14,845 96 Weighted Average 1,982 13.35% Pervious Area 12,863 86.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Bimct Entry, direct ' Subcatchment P7: driveway Hydrograph ' 1 0.98 cfs �Runoff ' Runo f=0.98 cfs Type III 24-hr 2 Year Rai fall=3110 w unof Area 14,84 sf R noff olume=3,27 cf Ru off D �pth=2 65" c=6.0 rnin ' CN 96 1 0 ' 0 5 10 15 20 A 30 35 40 Time (hours) ' i i pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD@ 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 16 iSummary for Pond 2P: Forebay Inflow Area = 10,803 sf, 79.57% Impervious, Inflow Depth = 2.65" for 2 Year event 1 Inflow 0.71 cfs @ 12.09 hrs, Volume= 2,386 cf Outflow 0.29 cfs @ 12.29 hrs, Volume= 2,385 cf, Atten= 59%, Lag= 12.4 min Primary = 0.29 cfs @ 12.29 hrs, Volume= 2,385 cf iRouting by Dyn-Stor-Ind method, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Peak Elev= 93.96' @ 12.29 hrs Surf.Area= 603 sf Storage=495 cf i Plug-Flow detention time= 31.6 min calculated for 2,385 cf (100% of inflow) Center-of-Mass det. time= 31.2 min ( 806.2 - 775.0 ) 1 Volume Invert Avail.Storage Storage Description #1 93.00' 859 cf Custom Stage Data (Prismatic)Listed below (Recalc) 1 Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 93.00 433 0 0 i 94.00 611 522 522 94.50 735 337 859 Device Routing Invert Outlet Devices 1 #1 Primary 93.00' 4.0" Round Culvert L= 10.0' CPP, projecting, no headwall, Ke= 0.900 Inlet/Outlet Invert= 93.00' /92.00' S= 0.10007 Cc= 0.900 1 n= 0.011, Flow Area= 0.09 sf #2 Primary 94.10' 10.0' long x 2.0' breadth Broad-Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 i 2.50 3.00 3.50 Coef. (English) 2.54 2.61 2.61 2.60 2.66 2.70 2.77 2.89 2.88 2.85 3.07 3.20 3.32 i Primary OutFlow Max=0.29 cfs @ 12.29 hrs HW=93.96' TW=0.00' (Dynamic Tailwater) t1=Culvert (Inlet Controls 0.29 cfs @ 3.38 fps) 2=13road-Crested Rectangular Weir ( Controls 0.00 cfs) 1 i i 1 i i 1 pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 17 ' Pond 2P: Forebay Hydrograph oa ' 0.75 0.71 cfs Inflcw Primary 0.7 065 Lour r = f I ' 0,6 1 lfluw =0—.7-tcfs 0.55 ,,i,. os -- c�fc ' a.as _ 96 U 3 OA O ' LL 0.35 0.29 cfs 0.3 0.25 ' 0..11 5 [— OA ' 0.05 0 0 5 10 15 20 25 3o 35 a0 ' Time (hours) 1 pr-technologyR Type 11124-hr 2 Year Rainfa11=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 0 2016 HydroCAD Software Solutions LLC Page 18 ' Summary for Pond 4P: cultec chambers Inflow Area = 27,455 sf,100.00% Impervious, Inflow Depth = 2.87" for 2 Year event ' Inflow 0.22 culls @ 12.61 hrs, Volume= 6,561 cf Outflow 0.22 cfs @ 13.64 hrs, Volume= 6,059 cf, Atten= 3%, Lag= 61.9 min Discarded = 0.01 cfs @ 4.80 hrs, Volume= 1,561 cf ' Primary = 0.21 cfs @ 13.64 hrs, Volume= 4,499 cf Routing by Dyn-Stor-Ind method, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Peak Elev= 100.05' @ 13.64 hrs Surf.Area= 870 sf Storage= 1,508 cf Plug-Flow detention time= 251.3 min calculated for 6,059 cf(92% of inflow) Center-of-Mass det. time= 215.7 min ( 1,076.8- 861.1 ) ' Volume Invert Avail.Storage Storage Description #1A 97.50' 702 cf 14.75'W x 59.001 x 3.21'H Field A ' 2,792 cf Overall - 1,038 cf Embedded = 1,754 cf x 40.0% Voids #2A 98.00' 1,038 cf Cultec R-280HD x 24 Inside#1 Effective Size=46.9"W x 26.0"H => 6.07 sf x 7.001 =42.5 cf t Overall Size= 47.0"W x 26.5"H x 8.001 with 1.00' Overlap Row Length Adjustment= +1.00' x 6.07 sf x 3 rows 1,740 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices ' #1 Discarded 97.50' 0.520 in/hr Exfiltration over Surface area #2 Primary 99.50' 4.0" Round Culvert L= 20.0' CPP, projecting, no headwall, Ke= 0.900 ' Inlet/Outlet Invert= 99.50' /96.00' S= 0.1750 '/' Cc= 0.900 n= 0.011 PVC, smooth interior, Flow Area= 0.09 sf piscarded OutFlow Max=0.01 cfs @ 4.80 hrs HW=97.53' (Free Discharge) 1 1=Exfiltration (Exfiltration Controls 0.01 cfs) Primary OutFlow Max=0.21 cfs @ 13.64 hrs HW=100.05' TW=0.00' (Dynamic Tailwater) ' t2=Culvert (Inlet Controls 0.21 cfs @ 2.36 fps) t 1 pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 19 Pond 4P: cultec chambers Hydrograph 0.25 ' 0.24 0.23 0.22 cfs IInflow p 0.22 cfs ®Outflow 0220.21 cfs iA� �Discarded 0.21 / Y —Primary 0.2 — 0.19 0.18 0.17 0.16 S— 0.15 0.14 C–=0-0� S- 0.13 c 0.12 ' a 0.11 — iina-- - 11111,11b 0.1 0.09 0.08 ' 0.07 _.. 0.06 0.05 0.04 0.03 ' 0.02 0.01 cfs 0.01 0 0 5 10 15 20 25 30 35 40 ' Time (hours) pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 0 2016 HydroCAD Software Solutions LLC Page 20 ' Summary for Pond 5P: rooftop detention Inflow Area = 21,578 sf,100.00% Impervious, Inflow Depth = 2.87" for 2 Year event ' inflow _ 1.48 cfs @ 1 1 f 2.08 hrs, Volume= 5, 57 c Outflow 0.14 cfs @ 12.87 hrs, Volume= 5,157 cf, Atten= 90%, Lag= 47.3 min Primary = 0.14 cfs @ 12.87 hrs, Volume= 5,157 cf ' Routing by Dyn-Stor-Ind method, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Peak Elev= 118.77' @ 12.87 hrs Surf.Area= 9,137 sf Storage= 2,068 cf ' Plug-Flow detention time= 126.0 min calculated for 5,157 cf(100% of inflow) Center-of-Mass det. time= 125.7 min ( 882.7- 757.1 ) Volume Invert Avail.Storage Storage Description #1 118.30' 25,489 cf Custom Stage Data (Prismatic)Listed below (Recalc) ' Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 118.30 332 n 0 ' 118.40 1,779 106 106 118.50 3,600 269 374 118.60 5,774 469 843 118.70 7,674 672 1,516 ' 118.80 9,900 879 2,394 118.90 12,358 1,113 3,507 119.00 15,048 1,370 4,877 ' 119.10 18,102 1,658 6,535 119.17 21,160 1,374 7,909 120.00 21,200 17,579 25,489 Device Routing Invert Outlet Devices #1 Primary 118.30' 2.0" Horiz. Orifice/Grate X 2.00 C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.14 cfs @ 12.87 hrs HW=118.77' TW=100.00' (Dynamic Tailwater) L1=0rifice/Grate (Orifice Controls 0.14 cfs @ 3.29 fps) 1 ' pr-technologyR Type 111 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 21 I ' Pond 5P: rooftop detention Hydrograph 1.48 cfs I _Inflow Primary In lowrea= 1 ,578 sf I flow 1 .48I�I fs ' Pri a 0.14 cfs Pea Ele =118.77' LL Stc rageL2,06 cf 1 � 0.14 cfs 01 0 5 10 15 20 25 30 35 40 Time (hours) 1 ' pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 22 Summary for Pond 6P: rooftop detention Inflow Area = 5,877 sf,100.00% Impervious, Inflow Depth = 2.87" for 2 Year event ' inflow 0.40 cfs @ 12.08 hrs, Volume= 1,404 cf Outflow 0.08 cfs @ 12.51 hrs, Volume= 1,404 cf, Atten= 80%, Lag= 25.4 min Primary = 0.08 cfs @ 12.51 hrs, Volume= 1,404 cf ' Routing by Dyn-Stor-Ind method, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Peak Elev= 118.90' @ 12.51 hrs Surf.Area= 2,287 sf Storage= 355 cf ' Plug-Flow detention time= 25.0 min calculated for 1,404 cf(100% of inflow) Center-of-Mass det. time= 24.6 min ( 781.7 - 757.1 ) ' Volume Invert Avail.Storage Storage Description #1 118.30' 6,180 cf Custom Stage Data (Prismatic)Listed below (Recalc) ' Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 118.30 10 0 0 I ' 118.40 20 2 2 118.50 32 3 4 118.60 266 15 19 118.70 723 49 68 ' 118.80 1,403 106 175 118.90 2,308 186 360 119.00 3,416 286 646 ' 119.10 4,708 406 1,053 119.17 5,726 365 1,418 120.00 5,750 4,763 6,180 Device Routing Invert Outlet Devices #1 Primary 118.30' 2.0" Horiz. Orifice/Grate C= 0.600 Limited to weir flow at low heads Primary OutFlow Max=0.08 cfs @ 12.51 hrs HW=118.90' TW=99.90' (Dynamic Tailwater) t1=0rifice/Grate (Orifice Controls 0.08 cfs @ 3.72 fps) 11 pr-technologyR Type 11124-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 23 Pond 6P: rooftop detention Hydrograph 0.44 0.42 Wild— OA .40 cfs —Inilow 0.4 Primary 0.385�7� ' 0.36 7 0.34 „r� 0.32 i r 0.3 0.26 / y 0.26 r 0.24 0.22 LL 0.2 0.18 0.16 0.14 - ' 0.12 0.10.08 cfs 0.08 0.06 ' 0.04 0.02 0 0 5 10 15 20 25 30 35 40 ITime (hours) 1 ' pr-technologyR Type 11124-hr 2 Year Rainfa/1=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 24 ' Summary for Link 1 L: to Technology Way Inflow Area = 104,833 sf, 84.90% Impervious, Inflow Depth = 2.68" for 2 Year event ' Inflow 6.37 cfs @ 12.10 hrs, Volume= 23,444 If Primary 6.37 cfs @ 12.10 hrs, Volume= 23,444 cf, Atten= 0%, Lag= 0.0 min ' Primary outflow= Inflow, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Link 1L: to Technology Way ' Hydrograph 7 cfs F- 6.37 InFlow Primary 6 f nflo =6.37 cfs 5 Pima =6.37 cfs w 4- 0 3 ' 2 1 0 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type /// 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 25 ' Summary for Link 2L: to S wetland Inflow Area = 45,988 sf, 78.39% Impervious, Inflow Depth = 1.99" for 2 Year event Inflow 0.54 cfs @ 12.13 hrs, Volume= 7,619 cf Primary 0.54 cfs @ 12.13 hrs, Volume= 7,619 cf, Atten= 0%, Lag= 0.0 min Primary outflow = Inflow, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Link 2L: to S wetland Hydrograph 0.6- FO 54 .s0.54 ds —Inflow ' —Primary 0.5 -Inflow-Area=�r988-Sf 0.45- if .45 s- 0.4 0.35 N 1 v 0.3 LL 025 02 0.15 ' 0.1 0.05 ' 0 0 5 10 15 20 25 30 35 40 Time (hours) L 1 ' pr-technologyR Type 1/I 24-hr 2 Year Rainfall=3.10" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 26 ' Summary for Link 3L: Total Inflow Area = 150,821 sf, 82.91% Impervious, Inflow Depth = 2.47" for 2 Year event t Inflow 6.89 cfs @ 12.10 hrs, Volume= 31,063 -If Primary 6.89 cfs @ 12.10 hrs, Volume= 31,063 cf, Atten= 0%, Lag= 0.0 min ' Primary outflow= Inflow, Time Span= 0.00-44.01 hrs, dt= 0.03 hrs Link 3L: Total Hydrograph 6.89 cfs _Inflow Primary In low rea=150,82 sf 6 nflo =6.89 ds 5 -6.89 fs-432 1 ' 04. 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type 111 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 @2016 HvdroCAD Software Solutions LLC Page 1 Time span=0.00-44.00 hrs, dt=0.03 hrs, 1468 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method ' Subcatchment P1: Existing Addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=4.36" Tc=6.0 min CN=98 Runoff=2.03 cfs 7,202 cf ' Subcatchment P2: main building Runoff Area=31,962 sf 100.00% Impervious Runoff Depth=4.36" Tc=6.0 min CN=98 Runoff=3.28 cfs 11,623 cf ' Subcatchment P3: proposed addition Runoff Area=21,578 sf 100.00% Impervious Runoff Depth=4.36" Tc=6.0 min CN=98 Runoff=2.21 cfs 7,847 cf Subcatchment P3A: Subcat P3A Runoff Area=5,877 sf 100.00% Impervious Runoff Depth=4.36" Tc=6.0 min CN=98 Runoff=0.60 cfs 2,137 cf Subcatchment P4: Road & parking Runoff Area=38,220 sf 63.76% Impervious Runoff Depth=3.91" Flow Length=165' Tc=10.6 min CN=94 Runoff=3.23 cfs 12,465 cf Subcatchment P5: along wetiand Runoff Area=7,730 sf 0.00% Impervious Runoff Depth=2.29" ' Tc=6.0 min CN=77 Runoff=0.47 cfs 1,477 cf Subcatchment P6: loading dock Runoff Area=10,803 sf 79.57% Impervious Runoff Depth=4.14" ' Tc=6.0 min CN=96 Runoff=1.09 cfs 3,723 cf Subcatchment P7: driveway Runoff Area=14,845 sf 86.65% Impervious Runoff Depth=4.14" Tc=6.0 min CN=96 Runoff=1.49 cfs 5,116 cf Pond 2P: Forebay Peak Elev=94.18' Storage=636 cf Inflow=1.09 cfs 3,723 cf Outflow=0.91 cfs 3,722 cf ' Pond 4P: cultec chambers Peak EIev=100.17' Storage=1,554 cf Inflow=0.25 cfs 9,984 cf Discarded=0.01 cfs 1,597 cf Primary=0.24 cfs 7,839 cf Outflow=0.25 cfs 9,436 cf Pond 5P: rooftop detention Peak EIev=118.90' Storage=3,495 cf Inflow=2.21 cfs 7,847 cf Outflow=0.16 cfs 7,847 cf Pond 6P: rooftop detention Peak EIev=119.00' Storage=640 cf Inflow=0.60 cfs 2,137 cf Outflow=0.09 cfs 2,137 cf ' Link 1 L: to Technology Way Inflow=9.68 cfs 36,406 cf Primary=9.68 cfs 36,406 cf Link 2L: to S wetland Inflow=1.53 cfs 13,037 cf Primary=1.53 cfs 13,037 cf Link 3L: Total Inflow=10.90 cfs 49,443 cf ' Primary=10.90 cfs 49,443 cf Total Runoff Area = 150,821 sf Runoff Volume = 51,590 cf Average Runoff Depth = 4.10" ' 17.09% Pervious=25,770 sf 82.91% Impervious = 125,051 sf 1 pr-technologyR Type 11124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 2 ' Subcatchment P1: Existing Addition Hydrograph ' 2.03 cfs P.uooff 2 Runo f=2.03 cfs ' Type III 2 -hr 10 Year Rainfall=4160" ' wunof Area 19,801 sf Runoff olum =7,20 cf Runoff Depth=4 36" Tc=6.0 rnin CN 98 0 Pw�.Li 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment 132: main building ' Hydrograph 3.20 cfs IRunoff ' 3 Ty a III 2 -hr 10 Year Rai fall=4.60" N Runoff Area=31 ,9 2 sf 0 2 Runoff. R noolurn =11 ,6 3 cf LL Ru off D pth=436rr ' c=6.0 min 1 ' o 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type Ill 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 3 Subcatchment P3: proposed addition Hydrograph ' 2.21 cfs —Runoff 2 Runo f=2.21 cfs Type III 24-hr 10 Year Rainnfall=4 6011 unof Area::21 ,570 sf Runoff olurn =7,84 Cf LLF-%Ul V11 - 11 c=6.0 rnin ' CN 98 0 0 5 10 15 20 25 30 A 40 Time (hours) Subcatchment P3A: Subcat P3A ' Hydrograph 0.65 0.60 cfs -�Runoff 0.6 _ Runo 0.55 -•-` — ' 0.45 10 Ye ir Rah _ n OA Kun f fere = 7 ss 3 0.35 Runoff Nfolurne=2,137 cf LL 0.3 t 6.25 Runoff De. th=4 3611 0.2 = .0- in 0.15 0.1 0.05 0 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 11124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 4 ' Subcatchment P4: Road & parking Hydrograph 3.23 cfs Runoff 3 =3-.2 -cfs- ' Ty a III 22 -hr 10 Year Rai fall=4 60'° ' N 2 Runoff Are =38,2 0 sf Runoff olurn =12,4 '5 cf LL Runoff D pth=3 91" low L ngth= 65' ' - TV- C =94 a - 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P5: along wetland ' Hydrograph osz 0.5 0.47 cfs —Runoff ' 0.48 0.46 _ 0.44 0.42 0.4 t -hr— ' 0.38 — 0.36 1 0.34 0.32 Run ff Are 1-7,7 0.3 `. 0.28. 0.26 —� f ° 0.24 LL 0.22 7 Ir 0.2 0.18 _ 0.16 Wit/— n- 0.14 — 0.12 ' 0.1 — 0.08 0.06 0.04 ' 0.02 0 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 111 24-lir 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 5 Subcatchment P6: loading dock Hydrograph 1.09 cfs IRuno RunoR — s— Type III 24-hr 10 Year Rairifall=4.60" w unof Area-10,803 sf R noff olum =3,72 cf ' LL Ru off D pth=4 14" c=6.0 min ' CN: 1 0 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P7: driveway Hydrograph 1.49 cfs IRunoff Runo f=1 .49 cfs Type III 24-hr 10 Yet I i r Rair fa11=4 60" uno Area:: f4;84 5 sf- R inoff olum =5,1 15 cf LL Runoff D pth=4 14" c=6.0 in L 1 1 . ' ! . . . . i i CN 96 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 111 24-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 6 ' Pond 2P: Forebay Hydrograph ' 1.09 cis —Inflow —Primary qf 0.91 cfs I1 Inflow: 1 .09 cfs Primary-0,91 -,fs Peak EI v=94, 18' 3 ' LLStorage=636 d 0 0 5 10 15 20 25 30 35 40 ' Time (hours) Pond 4P: cuitec chambers ' Hydrograph 0.26 0 0.25 cfs —Inflow FO.24 cfs o Outflow 0.24 —Discarded ow rea= s —Primary 0,22 62 Inflow=0.25 ds ' 0.16 m 0.16Disc, 4.01 Gib t 3 0.14 rmart' c s- 0,u 12 ' 0.1Pea F=1 r 0.08 —4 CCA 7 ' L0.06 0.04 0.02- 0.01 cfs ' 0 0 5 10 15 20 25 30 35 40 Time (hours) 1 pr-technologyR Type 11124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 7 Pond 5P: rooftop detention Hydrograph ' 2.21 cfs —Inflow —Primary In 2 — I flow 2.21 cls Primary 0.16 fs Pea Elev-118.90' 0 St ra a-3 49t cf ' 0.16 cfs 0- 0 5 10 15 20 25 30 35 40 ' Time (hours) Pond 6P: rooftop detention ' Hydrograph o.ss 0.60 cfs —Inflow 0.6 Primary ' 0.55 � 0.5 Ilry low ' fS-- ' 0.45 04 Pri a 0.09 cfs ' 0.35- N le Y a0 D.3 0.25 orag —- — cf ' — 0.2 a1s 0, 0.09 cfs 0.05 0 L yl�i;�� 0 5 10 15 20 25 30 35 40 Time (hours) pr4echnologyR Type 11124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCAD0 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Paae 8 Link 1L: to Technology Way Hydrograph ' 10 9.68 cfs —Inflow nmary n��,� —P s - G4-5W 6 - . - 8-cfs-- 7 N 6 U t o 5 LL 4 ' 3- 2 0- 0 5 10 15 20 25 30 35 40 ' Time (hours) Link 2L: to S wetland Hydrograph 1.53 cfs —Inflow PrimaryIn low rea= 5,98 sf Inflow-1 .53 Js Pri ary::1 .53 fs N O LL ' 0 0 5 10 15 20 25 30 35 40 Time (hours) t pr-technologyR Type 1/124-hr 10 Year Rainfall=4.60" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 C 2016 HydroCAD Software Solutions LLC Page 9 ' Link 3L: Total Hydrograph ' 12 10.90 cfsFZ Inflow 11 —Primary 10Inflow Vea=15=-I-sf- 9- e 40-9f-s- 8 ry .90 N 7 3 6 O u. 5- 4- ' 3 2 ' 1 0 0 5 10 15 20 25 30 35 40 ' - Time (hours) 1 1 1 1 pr-technologyR Type /// 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD& 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 10 I ' Time span=0.00-44.00 hrs, dt=0.03 hrs, 1468 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method Subcatchment P1: Existing Addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=5.16" Tc=6.0 min CN=98 Runoff=2.39 cfs 8,521 cf !, Subcatchment P2: main building Runoff Area=31,962 sf 100.00% Impervious Runoff Depth=5.16" Tc=6.0 min CN=98 Runoff=3.86 cfs 13,751 cf ' Subcatchment P3: proposed addition Runoff Area=21,578 sf 100.00% Impervious Runoff Depth=5.16" Tc=6.0 min CN=98 Runoff=2.60 cfs 9,283 cf Subcatchment P3A: Subcat P3A Runoff Area=5,877 sf 100.00% Impervious Runoff Depth=5.16" Tc=6.0 min CN=98 Runoff=0.71 cfs 2,528 cf Subcatchment P4: Road& parking Runoff Area=38,220 sf 63.76% Impervious Runoff Depth=4.70" Flow Length=165' Tc=10.6 min CN=94 Runoff=3.84 cfs 14,979 cf Subcatchment P5: along wetland Runoff Area=7,730 sf 0.00% impervious Runoff Depth=2.96" Tc=6.0 min CN=77 Runoff=0.61 cfs 1,907 cf Subcatchment P6: loading dock Runoff Area=10,803 sf 79.57% Impervious Runoff Depth=4.93" ' Tc=6.0 min CN=96 Runoff=1.28 cfs 4,439 cf Subcatchment P7: driveway Runoff Area=14,845 sf 86.65% Impervious Runoff Depth=4.93" Tc=6.0 min CN=96 Runoff=1.77 cfs 6,099 cf Pond 2P: Forebay Peak Elev=94.21' Storage=654 cf Inflow=1.28 cfs 4,439 cf Outflow=1.23 cfs 4,437 cf I ' Pond 4P: cultec chambers Peak EIev=100.23' Storage=1,572 cf Inflow=0.26 cfs 11,812 cf Discarded=0.01 cfs 1,608 cf Primary=0.25 cfs 9,594 cf Outflow=0.26 cfs 11,202 cf ' Pond 513: rooftop detention Peak Elev=118.96' Storage=4,318 cf Inflow=2.60 cfs 9,283 cf Outflow=0.17 cfs 9,283 cf Pond 6P: rooftop detention Peak EIev=119.04' Storage=804 cf Inflow=0.71 cfs 2,528 cf Outflow=0.09 cfs 2,528 cf ' Link 1L: to Technology Way Inflow=11.43 cfs 43,349 cf Primary=11.43 cfs 43,349 cf ' Link 2L: to S wetland Inflow=2.01 cfs 15,939 cf Primary=2.01 cfs 15,939 cf Link 3L: Total Inflow=13.48 cfs 59,258 cf ' Primary=13.48 cfs 59,288 cf Total Runoff Area = 150,821 sf Runoff Volume = 61,507 cf Average Runoff Depth =4.89" ' 17.09% Pervious = 25,770 sf 82.91% Impervious= 125,051 sf ' pr-technologyR Type 111 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Pape 11 ' Subcatchment P1: Existing Addition Hydrograph ' F2 3 39 cf s Runcff TRuno f=2.39 cfs 2 ie lit-34-ham 25 Year Rainfall=5140" Runoff Area: .19,80 5 sf Runoff olume=8,521 cf ' LL Ruroff D h= 1 " c=6.0 rnin ' CN 98 6 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P2: main building Hydrograph 4 T Runoff 1 Runo f=3.8 cfs ' Ty a III 2 -hr 3 ar a n- all= '— Runo f Area=31 ,9 2 sf u Runoff olumE=13,7 1 cf LL 2- Rurioff Depth=5 16" ' c=6.0 min C =98 1 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Pape 12 ' Subcatchment P3: proposed addition Hydrograph ' 2.60 cfs �Runoff Runo f=2.60 cfs Type III 24-hr 2 Year ain a = '— wRunoff Area:=21,57B sf V Runoff lfolume=9,283 cf LL Rur off D pth=5 16" c=6.0 nin CN 98 1 ° 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P3A: Subcat P3A ' Hydrograph 0.75 0.71 cis Runoff ' 0.7 0.6 — 5 0.6 Tyr — 055 5 Year Rai fall=5 40" 0.5 m 0.45 Run ff Arec — , 7 sf 0 04no o um = , cf LL 0.35 0.3 1 Runoff-Depth=5-16" 0.25 0.2 00 1 0.1 0.05 ' OL� 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 13 I ' Subcatchment P4: Road & parking Hydrograph 4 T Runoff Runoff=3.84 cfs Tyke III 214-hr 25 3 Year Rai itall=51 N Run o Are =38,20 sf Runoff olumc=14,9 9 cf_ LL 2-Ru noff Depth=4 70'° low Length= 65' ' Tc=10.6 min CIN=94 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P5: along wetland Hydrograph 0.65 0.61 cfs Runoff ' 0.6 0.55 Runof =0.61 cfs ' 0.5 Tyr III -hr_ OAS- 0.4- .45 0.4 rNulloff _ 0.35 Runoff Nfolumi =1 YVU7 Cf F, 0.3 ' 0.25 Runoff De th=2 96" 0.2 = /��L 0.15 n^{ ' 0.1 0.05 ' 0 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCADS 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Pape 14 ' Subcatchment 136: loading dock Hydrograph ' 1.28 cis Runoff Runo f=1 .28 cfs Type III 24-hr 25 Year Rai fall=5 4011 ' unof Area10,80 sf 0 R noff olum =4,43 cf ' LL Ru off Depth=4 9311 Tc=6.0 in ' CNS 96 a =2L � I 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P7: driveway Hydrograph 1.77 cfs Runoff ' Runo f=1 .77 cfs ' Type III 2 -hr 25 Year Rainfall=5 40" ' Runoff Area:=14,845 sf_ no o um = , c LL Runoff D pth=4.93" ' c=6.0 rnin N=070 -�w L I I 1 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 15 Pond 2P: Forebay Hydrograph I ' 1.28 cfs —Inflow T —Primary In low rea=,0,80 sf flow 1 .28 6fs Pri ary 1 .23 fs ' Pe k EI ' v=9421 ' torage=654 cf 1 � 01 1 1 0 5 10 15 20 25 30 35 40 Time (hours) Pond 4P: cultec chambers ' Hydrograph 02 4 8 �Inflow 0.2cfs I ®Outflow ' 0.26 0.255 cfs — e Discarded 0.24 75455 Rf —Primary 0220.2 0361cfs O tflow=0.26 cfs 6 A fs— 0 0.1 0.,6 a-ry cfs LL 0.,2 e e = 0.1 0.08 0.06 0.04 0,02- 0-, .02 0 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 111 24-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 16 ' Pond 5P: rooftop detention Hydrograph ' —Inflow Primary Inflow Area= 2 1 ,57 sf 2 2.60 cfs I I flow 2.60 fs ' Pri ary-:0.17 cfs PeaEle =118.96' ' LL St rage 4,31 it cf 0.17 cfs 0 0 5 10 15 20 25 30 35 40 Time (hours) Pond 6P: rooftop detention Hydrograph 0.75 0.71 cfs -inflow 0.7 Primary 0.65 ea 877 0.6 0.55 n oW S_ 0.5 X- 0.45 0.45 _ J 0.4 l 19-W0 LL 0.35 Sllorage—_ — ' 0.3 0.25- 0,2- 0,15 .250.20.15 1 0.09 cfs 0. 0.05 ' 0 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 17 Link 1 L: to Technology Way Hydrograph ' 12Cfs Inflow Primary 11 In low Area= s Inflow 11 .43 cfs ' a Primary-11 .43 cfs N 7 V ' O 6 LL 5 4- 3-. 2 1 0 0 5 10 15 20 25 30 35 40 Time (hours) Link 2L: to S wetland Hydrograph 2.01 cfs �Inflow 2 —Primary Ini low rea= 5,98 sf I flow 2.01-,fs Primary:--2.01 -,fs N O LL 1 01 1 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 11124-hr 25 Year Rainfall=5.40" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 18 i ' Link 3L: Total Hydrograph 15 ' 1413.48 cfs Infloav — 3 n ow rea= 555555 $ s Primary 1 2 11 - rf�. 10 T 9 8 O 7 ' a 6 5 1 4 3 2 L I 0 0 5 10 15 20 25 30 35 40 ' Time (hours) ' pr-technologyR Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Pape 19 ' Time span=0.00-44.00 hrs, dt=0.03 firs, 1468 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Dyn-Stor-Ind method - Pond routing by Dyn-Stor-Ind method ' Subcatchment P1: Existing Addition Runoff Area=19,805 sf 100.00% Impervious Runoff Depth=6.26" Tc=6.0 min CN=98 Runoff=2.88 cfs 10,334 cf Subcatchment P2: main building Runoff Area=31,962 sf 100.00% Impervious Runoff Depth=6.26" Tc=6.0 min CN=98 Runoff=4.65 cfs 16,677 cf Subcatchment P3: proposed addition Runoff Area=21,578 sf 100.00% Impervious Runoff Depth=6.26" Tc=6.0 min CN=98 Runoff=3.14 cfs 11,259 cf ' Subcatchment P3A: Subcat P3A Runoff Area=5,877 sf 100.00% Impervious Runoff Depth=6.26" Tc=6.0 min CN=98 Runoff=0.85 cfs 3,066 cf Subcatchment P4: Road & parking Runoff Area=38,220 sf 63.76% Impervious Runoff Depth=5.79" Flow Length=165' Tc=10.6 min CN=94 Runoff=4.68 cfs 18,448 cf Subcatchment P6: along wetland Runoff Area=7,730 sf 0.00% Impervious Runoff Depth=3.92' ' Tc=6.0 min CN=77 Runoff=0.81 cfs 2,525 cf Subcatchment P6: loading dock Runoff Area=10,803 sf 79.57% Impervious Runoff Depth=6.03" ' Tc=6.0 min CN=96 Runoff=1.56 cfs 5,425 cf Subcatchment P7: driveway Runoff Area=14,845 sf 86.65% Impervious Runoff Depth=6.03" Tc=6.0 min CN=96 Runoff=2.14 cfs 7,454 cf Pond 2P: Forebay Peak Elev=94.23' Storage=669 cf Inflow=1.56 cfs 5,425 cf Outflow=1.54 cfs 5,423 cf Pond 4P: cultec chambers Peak EIev=100.29' Storage=1,594 cf Inflow=0.27 cfs 14,325 cf Discarded=0.01 cfs 1,618 cf Primary=0.26 cfs 12,013 cf Outflow=0.27 cfs 13,631 cf Pond 5P: rooftop detention Peak EIev=119.04' Storage=5,512 cf Inflow=3.14 cfs 11,259 cf Outflow=0.18 cfs 11,259 cf ' Pond 6P: rooftop detention Peak EIev=119.10' Storage=1,041 cf Inflow=0.85 cfs 3,066 cf Outflow=0.09 cfs 3,066 cf Link 1 L: to Technology Way Inflow=13.84 cfs 52,913 cf Primary=13.84 cfs 52,913 cf ' Link 2L: to S wetland Inflow=2.54 cfs 19,961 cf Primary=2.54 cfs 19,961 cf Link 3L: Total Inflow=16.38 cfs 72,874 cf ' Primary=16.38 cfs 72,874 cf Total Runoff Area = 150,821 sf Runoff Volume =75,188 cf Average Runoff Depth = 5.98" ' 17.09% Pervious = 25,770 sf 82.91% Impervious = 125,051 sf ' pr-technologyR Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 @2016 HydroCAD Software Solutions LLC Page 20 Subcatchment P1: Existing Addition Hydrograph 2.88 cfs Runoff Runoff=2.8 cfs Type III 24-hr 00 Y ar Rai fall=6150" 2- Runoff Are =19,8 5 sf 3 R noff olum =10,334 cf ' LL Runoff D pth=6 26" c=6.0 min C =98 0 0 5 10 15 20 25 30 35 40 Time (hours) Subcatchment P2: main building ' Hydrograph s 4.65 cfs —Runoff ' Runoff=4.65 cfs 4Type 111 2 - r- 00 Year Rai fall=6 50" Rimn =31 y 3 , t 3 Runoff Volumc =16,67 cf LL Runoff D pth=6 26" 2 �c=6.0 min CN=98 0 0 5 10 15 20 25 30 35 40 Time (hours) pr-technologyR Type 111 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 21 Subcatchment P3: proposed addition Hydrograph ' 3.14 cfs IRunoff 3 uno = CTS ' Ty a III 2 -hr 100Y ar Rai fall=6 50" ' 2 = 1 f 3 Runoff olum =11 ,2 9 cf ' Ru off D pth=6 26" c=6.0 min _ 0 5 10 15 20 25 30 35 40 Time (hours) Subcatchment P3A: Subcat P3A Hydrograph a.ss 0.0 0.85 cis Runoff ' 0.85 - _ CC ww,;�^^ 0.8 J G S 0.75 ' 0.7 Ill 2A- Y 0.65 e r al fa—H--&.5V' os 0.55 =5,(7 0.5 p0.45 •-•-`.'' `i fy. LL 0 4 u o Dep = ' 0.35 — 0.3 =6� 0.25 ' 0.2 0.15 0.1 0.05 0 0 5 10 15 20 25 30 35 40 Time (hours) 1 ' pr-technologyR Type 11124-hr 100 YearRainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCADO 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 22 L Subcatchment P4: Road & parking Hydrograph ' S —Runoff 4.68 cfs Runo =4.6 cfs 4 - — 00 Y ar Rai fa11=6i 50" 1 0 3 �. Runoff olum =18,4 8 cf ' Ru off D pth=5 79" 2 low L ngth= 65' ' T =10.6 min 940 =94- 0 5 10 15 20 25 30 35 40 ' Time (hours) Subcatchment P5: along wetland ' Hydrograph °s 0.85 0.81 cfs Runoff ' 0.8 � — 0.75 fl 81 °' ' 0.65 _ 0.6 IT I 0 0.55 Run f Are _ 0.5 0 0.45 =2,-'s3 f LL 0.4 ,{1r', 0.35 Iv"'MI rr 1 03 —L nmin 0.25 ^r�' 0.2 n _ 77 0.15 0.05 0 5 10 15 20 25 30 35 40 Time (hours) 1 pr-technologyR Type 111 24-hr 100 Year Rainfall=6.50 Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10 00-19 s/n 03206 Q2016 HydroCAD Software Solutions LLC Page 23 tSubcatchment 136: loading dock Hydrograph 1.56 cfs —Runoff Runo I f=1 .56 ds ' Tye1112 -hr 1 0 Ye r Raifa-11=6 50" w 1 1 VIV — R inoff I folurn =5,42 cf Ru off D pth=6 03" c=6.0 in CNS 96 1 0 0 5 10 15 20 25 30 35 40 Time (hours) ' Subcatchment P7: driveway Hydrograph F-2-14-.7f. —Runoff 2 n =x-1-4 Type III 24-hr 100 Year Rainfall=6 50" unof Area 14,84 sf o R noff olume=7,454 cf ■ LL u o p = ■ c=6.0 rnin CN 96 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 11124-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 0 2016 HydroCAD Software Solutions LLC Page 24 tPond 2P: Forebay Hydrograph 1.54 cfs _Inflow In low Area= N sf Primary I I flow T1 .56Icfs Pri ary=1 .54 'cfs Pek EI v=94 23' LL torage=66 cf 0 0 5 10 15 20 25 30 35 40 - Time (hours) Pond 4P: cultec chambers ' Hydrograph 0.3 —Inflow ' 028 0 0 27 0.26 cfs I - —OulFlow —Discarded 0.26 Irif — 7 s f —Primary 024 n - .27 cfs 022 0.2. Dis4. c, r ed�OrO c s ' 0.16 3 7Vt .26 2 0.14 LL ' 0.12 —1 59 cf 0.08 ' 0.06 0.04 0 02 0.01 cfs 0 0 5 10 15 20 25 30 35 40 Time (hours) 1 1 pr-technologyR Type 11124-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 ©2016 HydroCAD Software Solutions LLC Page 25 t, Pond 5P: rooftop detention Hydrograph _ 3.14 cfs a Inflow Primary 3 now rea- s 11 � flow-3.14 fs Pri ary 0.18 fs 2 Pea Ele =119.04' LL St rage-5,512 cf 1 0.18 cfs 0 0 5 10 15 20 25 30 35 40 ' Time (hours) Pond 6P: rooftop detention Hydrograph o.ss 0.9 0.85 cfs' _Inflow 0.85 Primary 0.8 5--&77 0.75 07 F in .1ow 0.65 0,6 ^1— ' 0.55 0.5 0 0.45 (� u 0.4 q 0— f- 0.35 0.3 0.25 ' 02 0.15 0.09 cfs 0.1 0.05 0 L . . . . 0 5 10 15 20 25 30 35 40 Time (hours) Ili , pr-technologyR Type /// 24-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Page 26 Link 1L: to Technology Way Hydrograph s Tcfs14 —Primary13 — 4- sf-12 I flow-13.84 cfs Pro 13 RA t-fa 10 _ 9 N 8 3 O 7 LL 8 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 ' Time (hours) Link 2L: to S wetland l , Hydrograph Inflow Primary Inflow Area= 5,988 sf ' 2 2.54 cfs s-- Pri nary::2.54 cfs 1 0 LL 1 I y 0 5 10 15 20 25 30 35 40 Time (hours) ' pr-technologyR Type 11124-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 4/11/2017 HydroCAD® 10.00-19 s/n 03206 52016 HydroCAD Software Solutions LLC Page 27 Link 3L: Total Hydrograph ' 1a 17 F16.38 cfs �inflow Primary 16 14 OW1 V.38 ci S 13 12 11 10 3 9 o LL 7 6 5 4 3 2 1 0 0 5 10 15 20 25 30 35 40 ' Time (hours) i, pr-technology Type 11124-hr 100 Year Rainfall=6.50" Prepared by Microsoft Printed 3/28/2017 HydroCAD® 10.00-19 s/n 03206 02016 HydroCAD Software Solutions LLC Pond 4P: culttec chambers - Chamber Wizard Field A Chamber Model = Cultec R-280H®(Coltec Recharger(D 2801-113) Effective Size=46.9'9N x 26.0"H => 6.07 sf x 7.001 = 42.5 cf Overall Size=47.0"W x 26.5"H x 8.001 with 1.00' Overlap ' Row Length Adjustment= +1.00' x 6.07 sf x 3 rows 47.0" Wide + 6.0" Spacing = 53.0" C-C Row Spacing ' 8 Chambers/Row x 7.00' Long +1.00' Row Adjustment= 57.00' Row Length +12.0" End Stone x 2 = 59.00' Base Length 3 Rows x 47.0" Wide + 6.0" Spacing x 2 + 12.0" Side Stone x 2 = 14.75' Base Width 1 6.0" Base + 26.5" Chamber Height + 6.0" Cover = 3.21' Field Height 24 Chambers x 42.5 cf +1.00' Row Adjustment x 6.07 sf x 3 Rows = 1,038.3 cf Chamber Storage ' 2,792.1 cf Field - 1,038.3 cf Chambers = 1,753.8 cf Stone x 40.0% Voids = 701.5 cf Stone Storage ' Chamber Storage + Stone Storage = 1,739.8 cf= 0.040 of Overall Storage Efficiency = 62.3% Overall System Size = 59.00' x 14.75' x 3.21' 24 Chambers 103,4 cy Field 65.0 cy Stone i ' 6 II I i I p r i a i 1 � lr t P it 0 Section D Stormwater Management Checklist 1 1 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report A. Introduction Important:when A Stormwater Report must be submitted with the Notice of Intent permit application to document filling out forms compliance with the Stormwater Management Standards. The following checklist is NOT a substitute for on the computer, use only the tab the Stormwater Report(which should provide more substantive and detailed information) but is offered key to move your here as a tool to help the applicant organize their Stormwater Management documentation for their cursor-do not Report and for the reviewer to assess this information in a consistent format. As noted in the Checklist, use the return the Stormwater Report must contain the engineering computations and supporting information set forth in key. Volume 3 of the Error! Hyperlink reference not valid.. The Stormwater Report must be prepared and certified by a Registered Professional Engineer(RPE) licensed in the Commonwealth. The Stormwater Report must include, • The Stormwater Checklist completed and stamped by a Registered Professional Engineer(see page 2) that certifies that the Stormwater Report contains all required submittals.' This Checklist is to be used as the cover for the completed Stormwater Report. Applicant/Project Name • Project Address ' 0 Name of Firm and Registered Professional Engineer that prepared the Report • Long-Term Pollution Prevention Plan required by Standards 4-6 • Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan required ' by Standard 82 • Operation and Maintenance Plan required by Standard 9 In addition to all plans and supporting information, the Stormwater Report must include a brief narrative ' describing Stormwater management practices, including environmentally sensitive site design and LID techniques, along with a diagram depicting runoff through the proposed BMP treatment train. Plans are required to show existing and proposed conditions, identify all wetland resource areas, NRCS soil types, ' critical areas, Land Uses with Higher Potential Pollutant Loads (LUHPPL), and any areas on the site where infiltration rate is greater than 2.4 inches per hour. The Plans shall identify the drainage areas for both existing and proposed conditions at a scale that enables verification of supporting calculations. As noted in the Checklist, the Stormwater Management Report shall document compliance with each of the Stormwater Management Standards as provided in the Massachusetts Stormwater Handbook. The soils evaluation and calculations shall be done using the methodologies set forth in Volume 3 of the Massachusetts Stormwater Handbook. To ensure that the Stormwater Report is complete, applicants are required to fill in the Stormwater Report Checklist by checking the box to indicate that the specified information has been included in the ' Stormwater Report. If any of the information specified in the checklist has not been submitted, the applicant must provide an explanation. The completed Stormwater Report Checklist and Certification must be submitted with the Stormwater Report. 'The Stormwater Report may also include the Illicit Discharge Compliance Statement required by Standard 10. If not included in the Stormwater Report,the Illicit Discharge Compliance Statement must be submitted prior to the discharge of stormwater runoff to the post-construction best management practices. 2 For some complex projects, it may not be possible to include the Construction Period Erosion and Sedimentation Control Plan in the Stormwater Report. In that event,the issuing authority has the discretion to issue an Order of Conditions that approves the project and includes a condition requiring the proponent to submit the Construction Period Erosion and Sedimentation Control Plan ' before commencing any land disturbance activity on the site. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 1 of 8 ' Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report 1 B. Stormwater Checklist and Certification The following checklist is intended to serve as a guide for applicants as to the elements that ordinarily 1 need to be addressed in a complete Stormwater Report. The checklist is also intended to provide conservation commissions and other reviewing authorities with a summary of the components necessary for a comprehensive Stormwater Report that addresses the ten Stormwater Standards. 1 Note: Because stormwater requirements vary from project to project, it is possible that a complete Stormwater Report may not include information on some of the subjects specified in the Checklist. If it is determined that a specific item does not apply to the project under review, please note that the item is not 1 applicable (N.A.) and provide the reasons for that determination. A complete checklist must include the Certification set forth below signed by the Registered Professional 1 Engineer who prepared the Stormwater Report. Registered Professional Engineer's Certification ' I have reviewed the Stormwater Report, including the soil evaluation, computations, Long-term Pollution Prevention Plan, the Construction Period Erosion and Sedimentation Control Plan (if included), the Long- term Post-Construction Operation and Maintenance Plan, the Illicit Discharge Compliance Statement(if included) and the plans showing the stormwater management system, and have determined that they 1 have been prepared in accordance with the requirements of the Stormwater Management Standards as further elaborated by the Massachusetts Stormwater Handbook. I have also determined that the information presented in the Stormwater Checklist is accurate and that the information presented in the 1 Stormwater Report accurately reflects conditions at the site as of the date of this permit application. Registered Professional Engineer Block and Signature 1 �t� OF RETERI �9°3 OGRE14 G CIVIL u .5, No,27145 0 14,Q/ 1 Signature and Date 1 Checklist Project Type: Is the application for new development, redevelopment, or a mix of new and 1 redevelopment? ❑ New development ❑ Redevelopment ® Mix of New Development and Redevelopment 1 SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 2 of 8 1 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program '\\ Checklist for Stormwater Report ' Checklist (continued) ' LID Measures: Stormwater Standards require LID measures to be considered. Document what environmentally sensitive design and LID Techniques were considered during the planning and design of the project: ' ® No disturbance to any Wetland Resource Areas ❑ Site Design Practices(e.g. clustered development, reduced frontage setbacks) ' ❑ Reduced Impervious Area (Redevelopment Only) ❑ Minimizing disturbance to existing trees and shrubs ❑ LID Site Design Credit Requested: ' ❑ Credit 1 ❑ Credlt 2 ' ❑ Credit 3 ' ❑ Use of"country drainage" versus curb and gutter conveyance and pipe ❑ Bioretention Cells (includes Rain Gardens) ❑ Constructed Stormwater Wetlands(includes Gravel Wetlands designs) ❑ Treebox Filter ❑ Water Quality Swale ' ❑ Grass Channel ❑ Green Roof ❑ Other(describe): Standard 1: No New Untreated Discharges ® No new untreated discharges ® Outlets have been designed so there is no erosion or scour to wetlands and waters of the . Commonwealth ' ❑ Supporting calculations specified in Volume 3 of the Massachusetts Stormwater Handbook included. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 3 of 8 ' Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report Checklist (continued) ' Standard 2: Peak Rate Attenuation ❑ Standard 2 waiver requested because the project is located in land subject to coastal storm flowage and stormwater discharge is to a wetland subject to coastal flooding. ' ® Evaluation provided to determine whether off-site flooding increases during the 100-year 24-hour storm. ® Calculations provided to show that post-development peak discharge rates do not exceed pre- development rates for the 2-year and 10-year 24-hour storms. If evaluation shows that off-site flooding increases during the 100-year 24-hour storm, calculations are also provided to show that post-development peak discharge rates do not exceed pre-development rates for the 100-year 24- hour storm. Standard 3: Recharge ' ❑ Soil Analysis provided. M Required Recharge Volume calculation provided. ' ❑ Required Recharge volume reduced through use of the LID site Design Credits. ® Sizing the infiltration, BMPs is based on the following method: Check the method used. ® Static ❑ Simple Dynamic ❑ Dynamic Field' ❑ Runoff from all impervious areas at the site discharging to the infiltration BMP. ® Runoff from all impervious areas at the site is not discharging to the infiltration BMP and calculations ' are provided showing that the drainage area contributing runoff to the infiltration BMPs is sufficient to generate the required recharge volume. ' ® Recharge BMPs have been sized to infiltrate the Required Recharge Volume. ❑ Recharge BMPs have been sized to infiltrate the Required Recharge Volume only to the maximum extent practicable for the following reason: ❑ Site is comprised solely of C and D soils and/or bedrock at the land surface ❑ M.G.L. c. 21 E sites pursuant to 310 CMR 40.0000 ❑ Solid Waste Landfill pursuant to 310 CMR 19.000 ❑ Project is otherwise subject to Stormwater Management Standards only to the maximum extent practicable. ® Calculations showing that the infiltration BMPs will drain in 72 hours are provided. ' ❑ Property includes a M.G.L. c. 21 E site or a solid waste landfill and a mounding analysis is included. ' 80%TSS removal is required prior to discharge to infiltration BMP if Dynamic Field method is used. SALThermal_Stormcheck.doc•04111111 Stormwater Report Checklist•Page 4 of 8 Massachusetts Department of Environmental Protection ' Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report 1 Checklist (continued) ' Standard 3: Recharge (continued) ❑ The infiltration BMP is used to attenuate peak flows during storms greater than or equal to the 10- year 24-hour storm and separation to seasonal high groundwater is less than 4 feet and a mounding analysis is provided. ❑ Documentation is provided showing that infiltration BMPs do not adversely impact nearby wetland ' resource areas. Standard 4: Water Quality The Long-Term Pollution Prevention Plan typically includes the following: Good housekeeping practices; Provisions for storing materials and waste products inside or under cover; • Vehicle washing controls; • Requirements for routine inspections and maintenance of stormwater BMPs, Spill prevention and response plans; - Provisions for maintenance of lawns, gardens, and other landscaped areas, ' • Requirements for storage and use of fertilizers, herbicides, and pesticides; • Pet waste management provisions; Provisions for operation and management of septic systems, • Provisions for solid waste management; • Snow disposal and plowing plans relative to Wetland Resource Areas; • Winter Road Salt and/or Sand Use and Storage restrictions; • Street sweeping schedules; • Provisions for prevention of illicit discharges to the stormwater management system, Documentation that Stormwater BMPs are designed to provide for shutdown and containment in the event of a spill or discharges to or near critical areas or from LUHPPL; • Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan; List of Emergency contacts for implementing Long-Term Pollution Prevention Plan. ® A Long-Term Pollution Prevention Plan is attached to Stormwater Report and is included as an ' attachment to the Wetlands Notice of Intent. ❑ Treatment BMPs subject to the 44%TSS removal pretreatment requirement and the one inch rule for calculating the water quality volume are included, and discharge: ' ❑ is within the Zone II or Interim Wellhead Protection Area ❑ is near or to other critical areas ❑ is within soils with a rapid infiltration rate (greater than 2.4 inches per hour) ❑ involves runoff from land uses with higher potential pollutant loads. ❑ The Required Water Quality Volume is reduced through use of the LID site Design Credits. ® Calculations documenting that the treatment train meets the 80%TSS removal requirement and, if applicable, the 44% TSS removal pretreatment requirement, are provided. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 5 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report ' Checklist (continued) Standard 4: Water Quality (continued) ® The BMP is sized (and calculations provided) based on: ❑ The 1/i' or 1°Water Quality Volume or ® The equivalent flow rate associated with the Water Quality Volume and documentation is provided showing that the BMP treats the required water quality volume. ® The applicant proposes to use proprietary BMPs, and documentation supporting use of proprietary BMP and proposed TSS removal rate is provided. This documentation may be in the form of the ' propriety BMP checklist found in Volume 2, Chapter 4 of the Massachusetts Stormwater Handbook and submitting copies of the TARP Report, STEP Report, and/or other third party studies verifying performance of the proprietary BMPs. I ' ❑ A TMDL exists that indicates a need to reduce pollutants other than TSS and documentation showing that the BMPs selected are consistent with the TMDL is provided. Standard 6: Land Uses With Higher Potential Pollutant Loads (LUHPPLs? ❑ The NPDES Multi-Sector General Permit covers the land use and the Stormwater Pollution Prevention Plan (SWPPP) has been included with the Stormwater Report. ' ❑ The NPDES Multi-Sector General Permit covers the land use and the SWPPP will be submitted prior to the discharge of stormwater to the post-construction stormwater BMPs. ❑ The NPDES Multi-Sector General Permit does not cover the land use. ❑ LUHPPLs are located at the site and industry specific source control and pollution prevention measures have been proposed to reduce or eliminate the exposure of LUHPPLs to rain, snow, snow melt and runoff, and been included in the long term Pollution Prevention Plan. t ❑ All exposure has been eliminated. ' ❑ All exposure has not been eliminated and all BMPs selected are on MassDEP LUHPPL list. ❑ The LUHPPL has the potential to generate runoff with moderate to higher concentrations of oil and grease (e.g. all parking lots with >1000 vehicle trips per day) and the treatment train includes an oil grit separator, a filtering bioretention area, a sand filter or equivalent. Standard 6: Critical Areas ' ❑ The discharge is near or to a critical area and the treatment train includes only BMPs that MassDEP has approved for stormwater discharges to or near that particular class of critical area. ❑ Critical areas and BMPs are identified in the Stormwater Report. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 6 of 8 Massachusetts Department of Environmental Protection ' Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 7: Redevelopments and Other Projects Subject to the Standards only to the maximum extent practicable ❑ The project is subject to the Stormwater Management Standards only to the maximum Extent Practicable as a: ' ❑ Limited Project ❑ Small Residential Projects: 5-9 single family houses or 5-9 units in a multi-family development provided there is no discharge that may potentially affect a critical area. ❑ Small Residential Projects: 2-4 single family houses or 2-4 units in a multi-family development with a discharge to a critical area ❑ Marina and/or boatyard provided the hull painting, service and maintenance areas are protected from exposure to rain, snow, snow melt and runoff ❑ Bike Path and/or Foot Path ' ❑ Redevelopment Project Igl Redevelopment portion of mix of new and redevelopment. ❑ Certain standards are not fully met(Standard No. 1, 8, 9, and 10 must always be fully met) and an explanation of why these standards are not met is contained in the Stormwater Report. ' ® The project involves redevelopment and a description of all measures that have been taken to improve existing conditions is provided in the Stormwater Report. The redevelopment checklist found in Volume 2 Chapter 3 of the Massachusetts Stormwater Handbook may be used to document that the proposed stormwater management system (a) complies with Standards 2, 3 and the pretreatment and structural BMP requirements of Standards 4-6 to the maximum extent practicable and (b) improves existing conditions. Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan must include the following information: ' • Narrative; Construction Period Operation and Maintenance Plan; • Names of Persons or Entity Responsible for Plan Compliance; ' • Construction Period Pollution Prevention Measures; Erosion and Sedimentation Control Plan Drawings; Detail drawings and specifications for erosion control BMPs, including sizing calculations, ' • Vegetation Planning, • Site Development Plan, Construction Sequencing Plan; • Sequencing of Erosion and Sedimentation Controls; • Operation and Maintenance of Erosion and Sedimentation Controls, Inspection Schedule; • Maintenance Schedule; ' • Inspection and Maintenance Log Form. ® A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan containing the information set forth above has been included in the Stormwater Report. ' SAIThermal_Sto,mcheck.doc•04/01/08 Stormwater Report Checklist•Page 7 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report ' Checklist (continued) Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control (continued) ❑ The project is highly complex and information is included in the Stormwater Report that explains why it is not possible to submit the Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan with the application. A Construction Period Pollution Prevention and Erosion and Sedimentation Control has not been included in the Stormwater Report but will be submitted before land disturbance begins. ❑ The project is not covered by a NPDES Construction General Permit. ❑ The project is covered by a NPDES Construction General Permit and a copy of the SWPPP is in the Stormwater Report. ® The project is covered by a NPDES Construction General Permit but no SWPPP been submitted. The SWPPP will be submitted BEFORE land disturbance begins. Standard 9: Operation and Maintenance Plan ® The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and includes the following information: ' ® Name of the stormwater management system owners; ® Party responsible for operation and maintenance; ® Schedule for implementation of routine and non-routine maintenance tasks; ' ® Plan showing the location of all stormwater BMPs maintenance access areas; ❑ Description and delineation of public safety features, ' ❑ Estimated operation and maintenance budget; and ® Operation and Maintenance Log Form. ❑ The responsible party is not the owner of the parcel where the BMP is located and the Stormwater Report includes the following submissions: ❑ A copy of the legal instrument(deed, homeowner's association, utility trust or other legal entity) that establishes the terms of and legal responsibility for the operation and maintenance of the project site stormwater BMPs; ❑ A plan and easement deed that allows site access for the legal entity to operate and maintain BMP functions. Standard 10: Prohibition of Illicit Discharges ® The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges, ' ❑ An Illicit Discharge Compliance Statement is attached; ® NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of any stormwater to post-construction BMPs. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 8 of 8 1 1 1 1 1 Section E ' Operation & Maintenance Plan & Long Term Pollution Prevention Plan 1 1 11 �I 1 it Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report A. Introduction Important:when A Stormwater Report must be submitted with the Notice of Intent permit application to document filling out forms compliance with the Stormwater Management Standards. The following checklist is NOT a substitute for on the computer, tab, the Stormwater Report which should provide more substantive and detailed information but is offered use only the tab P ( P ) key to move your here as a tool to help the applicant organize their Stormwater Management documentation for their cursor-do not Report and for the reviewer to assess this information in a consistent format. As noted in the Checklist, use the return the Stormwater Report must contain the engineering computations and supporting information set forth in key. Volume 3 of the Error! Hyperlink reference not valid- The Stormwater Report must be prepared and certified by a Registered Professional Engineer(RPE) licensed in the Commonwealth. ' The Stormwater Report must include: • The Stormwater Checklist completed and stamped by a Registered Professional Engineer(see ' page 2)that certifies that the Stormwater Report contains all required submittals.' This Checklist is to be used as the cover for the completed Stormwater Report. Applicant/Project Name • Project Address ' • Name of Firm and Registered Professional Engineer that prepared the Report • Long-Term Pollution Prevention Plan required by Standards 4-6 • Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan required ' by Standard 82 Operation and Maintenance Plan required by Standard 9 In addition to all plans and supporting information, the Stormwater Report must include a brief narrative ' describing stormwater management practices, including environmentally sensitive site design and LID techniques, along with a diagram depicting runoff through the proposed BMP treatment train. Plans are required to show existing and proposed conditions, identify all wetland resource areas, NRCS soil types, critical areas, Land Uses with Higher Potential Pollutant Loads (LUHPPL), and any areas on the site where infiltration rate is greater than 2.4 inches per hour. The Plans shall identify the drainage areas for both existing and proposed conditions at a scale that enables verification of supporting calculations. ' As noted in the Checklist, the Stormwater Management Report shall document compliance with each of the Stormwater Management Standards as provided in the Massachusetts Stormwater Handbook. The soils evaluation and calculations shall be done using the methodologies set forth in Volume 3 of the Massachusetts Stormwater Handbook. To ensure that the Stormwater Report is complete, applicants are required to fill in the Stormwater Report Checklist by checking the box to indicate that the specified information has been included in the ' Stormwater Report. If any of the information specified in the checklist has not been submitted, the applicant must provide an explanation. The completed Stormwater Report Checklist and Certification must be submitted with the Stormwater Report. 'The Stormwater Report may also include the Illicit Discharge Compliance Statement required by Standard 10. If not included in the Stormwater Report,the Illicit Discharge Compliance Statement must be submitted prior to the discharge of stormwater runoff to the post-construction best management practices. 3 For some complex projects,it may not be possible to include the Construction Period Erosion and Sedimentation Control Plan in the Stormwater Report. In that event,the issuing authority has the discretion to issue an Order of Conditions that approves the project and includes a condition requiring the proponent to submit the Construction Period Erosion and Sedimentation Control Plan ' before commencing any land disturbance activity on the site. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 1 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report B. Stormwater Checklist and Certification The following checklist is intended to serve as a guide for applicants as to the elements that ordinarily ' need to be addressed in a complete Stormwater Report. The checklist is also intended to provide conservation commissions and other reviewing authorities with a summary of the components necessary for a comprehensive Stormwater Report that addresses the ten Stormwater Standards. ' Note: Because stormwater requirements vary from project to project, it is possible that a complete Stormwater Report may not include information on some of the subjects specified in the Checklist. If it is determined that a specific item does not apply to the project under review, please note that the item is not ' applicable (N.A.) and provide the reasons for that determination. A complete checklist must include the Certification set forth below signed by the Registered Professional ' Engineer who prepared the Stormwater Report. Registered Professional Engineer's Certification ' I have reviewed the Stormwater Report, including the soil evaluation, computations, Long-term Pollution Prevention Plan, the Construction Period Erosion and Sedimentation Control Plan (if included), the Long- term Post-Construction Operation and Maintenance Plan, the Illicit Discharge Compliance Statement(if included) and the plans showing the stormwater management system, and have determined that they have been prepared in accordance with the requirements of the Stormwater Management Standards as further elaborated by the Massachusetts Stormwater Handbook. I have also determined that the information presented in the Stormwater Checklist is accurate and that the information presented in the ' Stormwater Report accurately reflects conditions at the site as of the date of this permit application. Registered Professional Engineer Block and Signature OF wS wt ti PETER J. ' f OGREN N CIVIL ti ,9 No.27145 O �SfONas �Ak3ln ALE�'"� r Signature and Date ' Checklist Project Type: Is the application for new development, redevelopment, or a mix of new and redevelopment? ❑ New development ' ❑ Redevelopment ® Mix of New Development and Redevelopment SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 2 of 8 Massachusetts Department of Environmental Protection ' Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report ' Checklist (continued) ' LID Measures: Stormwater Standards require LID measures to be considered. Document what environmentally sensitive design and LID Techniques were considered during the planning and design of the project: ' ® No disturbance to any Wetland Resource Areas ❑ Site Design Practices(e.g. clustered development, reduced frontage setbacks) ❑ Reduced Impervious Area (Redevelopment Only) ' ❑ Minimizing disturbance to existing trees and shrubs ❑ LID Site Design Credit Requested: ' ❑ Credit 1 ❑ Credit 2 ' ❑ Credit 3 ❑ Use of"country drainage' versus curb and gutter conveyance and pipe ❑ Bioretention Cells (includes Rain Gardens) ' ❑ Constructed Stormwater Wetlands(includes Gravel Wetlands designs) ❑ Treebox Filter ' ❑ Water Quality Swale i ' ❑ Grass Channel ❑ Green Roof ❑ Other(describe): ' Standard 1: No New Untreated Discharges ' ® No new untreated discharges ® Outlets have been designed so there is no erosion or scour to wetlands and waters of the Commonwealth ❑ Supporting calculations specified in Volume 3 of the Massachusetts Stormwater Handbook included. j I ' SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 3 of 8 ' Massachusetts Department of Environmental Protection ' Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report ' Checklist (continued) Standard 2: Peak Rate Attenuation ❑ Standard 2 waiver requested because the project is located in land subject to coastal storm flowage and stormwater discharge is to a wetland subject to coastal flooding. ' ® Evaluation provided to determine whether off-site flooding increases during the 100-year 24-hour storm. ® Calculations provided to show that post-development peak discharge rates do not exceed pre- development rates for the 2-year and 10-year 24-hour storms. If evaluation shows that off-site flooding increases during the 100-year 24-hour storm, calculations are also provided to show that post-development peak discharge rates do not exceed pre-development rates for the 100-year 24- hour storm. Standard 3: Recharge ' ❑ Soil Analysis provided. ® Required Recharge Volume calculation Provided. ❑ Required Recharge volume reduced through use of the LID site Design Credits. t ® Sizing the infiltration, BMPs is based on the following method: Check the method used. ® Static ❑ Simple Dynamic ❑ Dynamic Field' ' ❑ Runoff from all impervious areas at the site discharging to the infiltration BMP. ® Runoff from all impervious areas at the site is not discharging to the infiltration BMP and calculations ' are provided showing that the drainage area contributing runoff to the infiltration BMPs is sufficient to generate the required recharge volume. ' ® Recharge BMPs have been sized to infiltrate the Required Recharge Volume. ❑ Recharge BMPs have been sized to infiltrate the Required Recharge Volume only to the maximum extent practicable for the following reason: ' ❑ Site is comprised solely of C and D soils and/or bedrock at the land surface ❑ M.G.L. c. 21E sites pursuant to 310 CMR 40.0000 ' ❑ Solid Waste Landfill pursuant to 310 CMR 19.000 ❑ Project is otherwise subject to Stormwater Management Standards only to the maximum extent ' practicable. ® Calculations showing that the infiltration BMPs will drain in 72 hours are provided. ' ❑ Property includes a M.G.L. c. 21 E site or a solid waste landfill and a mounding analysis is included. __._ ........... 1 80%TSS removal is required prior to discharge to infiltration BMP if Dynamic Field method is used. ' SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 4 of 8 ' Massachusetts Department of Environmental Protection ' Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) ' Standard 3: Recharge (continued) ❑ The infiltration BMP is used to attenuate peak flows during storms greater than or equal to the 10- year 24-hour storm and separation to seasonal high groundwater is less than 4 feet and a mounding analysis is provided. ❑ Documentation is provided showing that infiltration BMPs do not adversely impact nearby wetland ' resource areas. Standard 4: Water Quality The Long-Term Pollution Prevention Plan typically includes the following: • Good housekeeping practices, Provisions for storing materials and waste products inside or under cover; ' Vehicle washing controls; • Requirements for routine inspections and maintenance of stormwater BMPs; Spill prevention and response plans; • Provisions for maintenance of lawns, gardens, and other landscaped areas; • Requirements for storage and use of fertilizers, herbicides, and pesticides, • Pet waste management provisions, Provisions for operation and management of septic systems; • Provisions for solid waste management; Snow disposal and plowing plans relative to Wetland Resource Areas, Winter Road Salt and/or Sand Use and Storage restrictions; ' • Street sweeping schedules; Provisions for prevention of illicit discharges to the stormwater management system; Documentation that Stormwater BMPs are designed to provide for shutdown and containment in the event of a spill or discharges to or near critical areas or from LUHPPL; ' • Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan, • List of Emergency contacts for implementing Long-Term Pollution Prevention Plan. ® A Long-Term Pollution Prevention Plan is attached to Stormwater Report and is included as an ' attachment to the Wetlands Notice of Intent. ❑ Treatment BMPs subject to the 44%TSS removal pretreatment requirement and the one inch rule for calculating the water quality volume are included, and discharge: ' ❑ is within the Zone II or Interim Wellhead Protection Area ❑ is near or to other critical areas ' ❑ is within soils with a rapid infiltration rate (greater than 2.4 inches per hour) ' ❑ involves runoff from land uses with higher potential pollutant loads. ❑ The Required Water Quality Volume is reduced through use of the LID site Design Credits. ' ® Calculations documenting that the treatment train meets the 80%TSS removal requirement and, if applicable, the 44% TSS removal pretreatment requirement, are provided. ' SALThermal_Storrncheck.doc•04/01/08 Stormwater Report Checklist•Page 5 of 8 ' Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report Checklist (continued) IStandard 4: Water Quality (continued) ® The BMP is sized (and calculations provided) based on: ' ❑ The %" or 1"Water Quality Volume or ® The equivalent flow rate associated with the Water Quality Volume and documentation is provided showing that the BMP treats the required water quality volume. ® The applicant proposes to use proprietary BMPs, and documentation supporting use of proprietary BMP and proposed TSS removal rate is provided. This documentation may be in the form of the ' propriety BMP checklist found in Volume 2, Chapter 4 of the Massachusetts Stormwater Handbook and submitting copies of the TARP Report, STEP Report, and/or other third party studies verifying performance of the proprietary BMPs. ' ❑ A TMDL exists that indicates a need to reduce pollutants other than TSS and documentation showing that the BMPs selected are consistent with the TMDL is provided. Standard 5: Land Uses With Higher Potential Pollutant Loads (LUHPPLs) ' ❑ The NPDES Multi-Sector General Permit covers the land use and the Stormwater Pollution Prevention Plan (SWPPP) has been included with the Stormwater Report. ❑ The NPDES Multi-Sector General Permit covers the land use and the SWPPP will be submitted prior to the discharge of stormwater to the post-construction stormwater BMPs. ❑ The NPDES Multi-Sector General Permit does not cover the land use. ' ❑ LUHPPLs are located at the site and industry specific source control and pollution prevention measures have been proposed to reduce or eliminate the exposure of LUHPPLs to rain, snow, snow melt and runoff, and been included in the long term Pollution Prevention Plan. ❑ All exposure has been eliminated. ' ❑ All exposure has not been eliminated and all BMPs selected are on MassDEP LUHPPL list. ❑ The LUHPPL has the potential to generate runoff with moderate to higher concentrations of oil and ' grease (e.g. all parking lots with >1000 vehicle trips per day) and the treatment train includes an oil grit separator, a filtering bioretention area, a sand filter or equivalent. Standard 6: Critical Areas ' ❑ The discharge is near or to a critical area and the treatment train includes only BMPs that MassDEP has approved for stormwater discharges to or near that particular class of critical area. ' ❑ Critical areas and BMPs are identified in the Stormwater Report. ' SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 6 of 8 I ' Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program Checklist for Stormwater Report ' Checklist (continued) 1 Standard 7: Redevelopments and Other Projects Subject to the Standards only to the maximum extent practicable ❑ The project is subject to the Stormwater Management Standards only to the maximum Extent Practicable as a: ' ❑ Limited Project ❑ Small Residential Projects: 5-9 single family houses or 5-9 units in a multi-family development ' provided there is no discharge that may potentially affect a critical area. ❑ Small Residential Projects: 2-4 single family houses or 2-4 units in a multi-family development with a discharge to a critical area ' ❑ Marina and/or boatyard provided the hull painting, service and maintenance areas are protected from exposure to rain, snow, snow melt and runoff ❑ Bike Path and/or Foot Path ' ❑ Redevelopment Project E Redevelopment portion of mix of new and redevelopment. ' ❑ Certain standards are not fully met(Standard No. 1, 8, 9, and 10 must always be fully met) and an explanation of why these standards are not met is contained in the Stormwater Report. ' ® The project involves redevelopment and a description of all measures that have been taken to improve existing conditions is provided in the Stormwater Report. The redevelopment checklist found in Volume 2 Chapter 3 of the Massachusetts Stormwater Handbook may be used to document that the proposed stormwater management system (a)complies with Standards 2, 3 and the pretreatment and structural BMP requirements of Standards 4-6 to the maximum extent practicable and (b) improves existing conditions. Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control ' A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan must include the following information: ' • Narrative; Construction Period Operation and Maintenance Plan; • Names of Persons or Entity Responsible for Plan Compliance; j • Construction Period Pollution Prevention Measures; • Erosion and Sedimentation Control Plan Drawings; Detail drawings and specifications for erosion control BMPs, including sizing calculations; ' • Vegetation Planning; • Site Development Plan, Construction Sequencing Plan; ' • Sequencing of Erosion and Sedimentation Controls; • Operation and Maintenance of Erosion and Sedimentation Controls; Inspection Schedule; • Maintenance Schedule; ' • Inspection and Maintenance Log Form. ® A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan containing the information set forth above has been included in the Stormwater Report. ' SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 7 of 8 ' Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control (continued) ❑ The project is highly complex and information is included in the Stormwater Report that explains why it is not possible to submit the Construction Period Pollution Prevention and Erosion and 1 Sedimentation Control Plan with the application. A Construction Period Pollution Prevention and Erosion and Sedimentation Control has not been included in the Stormwater Report but will be submitted before land disturbance begins. ' ❑ The project is not covered by a NPDES Construction General Permit. ❑ The project is covered by a NPDES Construction General Permit and a copy of the SWPPP is in the Stormwater Report. ® The project is covered by a NPDES Construction General Permit but no SWPPP been submitted. The SWPPP will be submitted BEFORE land disturbance begins. ' Standard 9: Operation and Maintenance Plan Z The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and includes the following information: ' ® Name of the stormwater management system owners; ' ® Party responsible for operation and maintenance; ® Schedule for implementation of routine and non-routine maintenance tasks; ® Plan showing the location of all stormwater BMPs maintenance access areas; ❑ Description and delineation of public safety features, ' ❑ Estimated operation and maintenance budget; and ® Operation and Maintenance Log Form. ' ❑ The responsible party is not the owner of the parcel where the BMP is located and the Stormwater Report includes the following submissions: ❑ A copy of the legal instrument(deed, homeowner's association, utility trust or other legal entity) that establishes the terms of and legal responsibility for the operation and maintenance of the project site stormwater BMPs; ❑ A plan and easement deed that allows site access for the legal entity to operate and maintain BMP functions. Standard 10: Prohibition of Illicit Discharges ' ® The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges; ' ❑ An Illicit Discharge Compliance Statement is attached; ® NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of any stormwater to post-construction BMPs. SALThermal_Stormcheck.doc•04/01/08 Stormwater Report Checklist•Page 8 of 8 ! OPERATION AND MAINTENANCE PLAN AND LONG-TERM POLLUTION PREVENTION PLAN ! THERMAL CIRCUITS #1 &#6 TECHNOLOGY WAY SALEM, MASSACHUSETTS ! March 20, 2017 GENERAL ! The management plan incorporates a combination of three or more of the following chain of structural Best Management Practices to improve the water quality of the stormwater runoff from the proposed addition and ! other impervious areas. Refer to the March 2017 Hayes Engineering, Inc. plan titled "Site Plan, Proposed Addition, Thermal Circuits, #1 Technology Way, Salem, Mass." for stormwater BMP and snow storage locations. ! 1. Deep Sump Catch Basins with Gas Trap/Hood ! 2. Cultec R-280HD Infiltration Chambers ! 3. Forebay Basin 4. "VortSentry" HS36 Water Quality chamber ! 5. Level Spreader ! Each of these facilities has unique characteristics, uses, planning considerations and maintenance requirements. The maintenance requirements, as suggested by the DEP in "Stormwater Management — Volume Two: Stormwater Technical Handbook", and the manufacturer's suggested schedules, are ! summarized in the following sections. It is suggested that the following guidelines be adhered to for a one-year cycle following completion of the project, then adjusted, as necessary, based on the results of the required inspections, unless otherwise stated. ! Deep Sump Catch Basin with Hood ! The catch basins must be inspected, and if necessary, cleaned four (4) times a year including at the end of foliage and snow removal season. Inspections shall consist of two tasks: measuring and recording depth of sediment deposits contained within the basin, and inspecting structural basin, hood, inlet and ! outlet, and sump components for damage. The inspection frequency may need to be increased if catch basins are regularly found to contain a significant amount of trash and sediment. ! ➢ Basins shall be cleaned at least annually using a vacuum truck or when they are found to contain a significant amount of deposits (whenever the deposit depth is greater than or equal to one-half the depth from the bottom of the lowest invert) and there is a significant amount of trash, as specified in ! the MADEP Stormwater Handbook, Volume 2, Chapter 2, pages 3 through 5. ➢ Damaged basin components shall be repaired as soon after discovery as possible to ensure that the ! catch basin functions properly. ➢ Removed basin deposits must be handled in compliance with local, state and federal requirements. (See Structural BMPs —Volume 2, Chapter 2, page 5 from the MADEP Stormwater Handbook). ! 1 Operation and Maintenance Plan and LTPPP, Thermal Circuits, #1 Technology Way, Salem, MA March 20, 2017 VortSentry HS36 ' Regulating the sediment and petroleum product input to the proposed water quality system is the priority maintenance activity. Sediments and any oil spillage should be trapped and removed before they reach the 1 unit. ➢ Regular inspection is the key to effective maintenance and is easily performed. Pollutant deposition and transport may vary from year to year and regular inspections will help ensure that the system is cleaned out at the appropriate time. At a minimum, inspections should be performed twice per year (i.e. spring and fall) however more frequent inspections may be necessary in equipment wash down areas and where winter sanding operations may lead to rapid accumulations of a large volume of sediment. A record of each inspection and maintenance activity shall be kept by the Property Owner or their designated Facility Manager. ' ➢ The Vortsentry HS should be cleaned when the sediment has accumulated to a depth of two feet in the treatment chamber. This determination can be made by taking two measurements with a stadia rod or similar measuring device; one measurement from the manhole opening to the top of the sediment pile ' and the other from the manhole opening to the water surface. If the difference between these measurements is less than 3.6' for the HS36 and 4.7' for the HS48, then the Vorsentry HS should be maintained to ensure effective treatment. ' ➢ Cleaning of the Vortsentry HS should be done during dry weather conditions when no flow is entering the system. Cleanout of the Vortsentry HS with a vacuum truck is generally the most effective and ' convenient method of excavating pollutants from the system. Simply remove the manhole cover and insert the vacuum hose into the sump. All pollutants can be removed from this one access point from the surface with no requirements for Confined Space Entry. ' ➢ In installations where the risk of petroleum spills is small, liquid contaminants may not accumulate as quickly as sediment. However, an oil and gasoline spill should be cleaned out immediately. Motor oil i and other hydrocarbons that accumulate on a more routine basis should be removed when an appreciable layer has been captured. To remove these pollutants, it may be preferable to use absorbent pads, which solidify the oils. These are usually much easier to remove from the unit individually, and less expensive to dispose than the oil\water emulsion that may be created by IL ' vacuuming the oily layer. Floating trash can be netted out if you wish to separate it from the other pollutants. ➢ Manhole covers should be securely seated following cleaning activities to prevent leakage of runoff into the system from above and also to ensure proper safety precautions. If anyone physically enters the unit, Confined Space Entry procedures need to be followed. ➢ Disposal of all material removed from the Vortsentry HS should be done in accordance with local regulations. In many locations, disposal of evacuated sediments may be handled in the same manner as disposal of sediment removed from catch basins or deep sump manholes. See Attached Operation, Design, Performance and Maintenance Guide by Contech Engineered Solutions. 2 Operation and Maintenance Plan and LTPPP, Thermal Circuits, #1 Technology Way, Salem, MA ' March 20, 2017 Cultec® Infiltration Chambers Recharge systems are prone to failure due to clogging. Adherence to this aggressive maintenance plan and schedule preserves effectiveness of the system. ➢ Refer to the manufacture's "Operation and Maintenance Guidelines" brochure (attached) for maintenance description. ' ➢ The subsurface system will be inspected after every major storm for the first few months after construction to ensure that proper function has been achieved. Thereafter, the area will be inspected at least four times a year. Water levels in the chambers should be recorded over several days to check drainage. ➢ The inspection ports for the recharger system will be inspected after every major storm and the collected debris removed. ➢ Any required cleaning or other action will be documented and completed within seven business days. ➢ Ponded water inside the chambers (as visible from the inspection ports) after 24 hours or several days most likely indicates that the bottoms of the pipes are clogged. ➢ The inspection, cleaning, and maintenance responsibility for the recharge system shall belong to the Property Owner and any designated Facility Manager. ➢ If inspection indicates that replacement or major repair is required, a work plan will be submitted to the Conservation Commission. Forebav Basin • Forebay should be inspected regularly during the construction period and cleaned out when there is significant accumulation of sediment. It may be used as a settlement basin provided sediment is cleaned out after construction has been completed, and it is maintained as noted below. • The forebay shall be inspected monthly to determine the amount of sediment accumulation and condition ' of the basin slopes, bottom and health of grass cover. Mow grass on slopes and berm at least twice during the growing season and clean basin at least four times per year and remove sediment when it accumulates to 3-6 inches. Removal of sediment from the forebay shall be accomplished by hand or with ' a backhoe, keeping the machine outside of the forebay. Reseed the forebay after sediment clean-out. • Areas of slope erosion, cracking or other damage shall be repaired as soon after discovery as possible. i A dense, healthy growth of grass shall be maintained. Bare spots or thinly vegetated areas shall be overseeded accomplish dense cover. • All sediment and hydrocarbons should be handled properly and disposed of in accordance with local, state, and federal guidelines and regulations. ' • Snow shall not be plowed directly into the forebay basin, but deposited into the designated snow storage areas to prevent plowed debris from entering the basin. 3 ' Operation and Maintenance Plan and LTPPP, Thermal Circuits, #1 Technology Way, Salem, MA March 20, 2017 Level Spreader The level spreader should be checked periodically after every major storm to determine if the berm has been damaged and to determine that the design conditions have not changed. Any detrimental sediment ' accumulation should be removed. If riling has taken place on the berm, or adjacent to the level spreader, then the damage should be repaired as soon as possible. Leaf litter shall be removed from the level spreader area. The vegetation in the vicinity downgradient of the spreader will be periodically inspected and fertilized to maintain healthy dense growth. Parking Lot Sweeping In order to minimize the TSS load to the deep sump catch basins and those BMPs downstream it is planned to sweep the parking lot areas as needed for the duration of addition /parking lot construction activities, and thereafter two (2) times per year or more frequently if conditions require. 1 Removal of Siltation Controls ' All siltation controls, including, but not limited to, hay bales and silt fence, shall be removed, with the approval of the Salem Conservation Commission, as soon as practical after paving, re-vegetation and total stabilization of the site. Unvegetated areas remaining in the area of the siltation controls shall be Ioamed and seeded with the appropriate groundcover to insure re-vegetation as rapidly as possible after the removal of the siltation controls. ' Spill Emergency Response and Shutoff Plan ' In the event of an accidental spill of gasoline or oil, there shall provided, and kept on site, 36" x 60" "Drain Protector II" rectangular catch basin covers and 10-foot long "Spill berms' to provide protection for the drainage system. Both items are available from "Supply Line Direct". These items will be stored on site in an easily ' accessible location and personnel will be instructed in their proper use. Catch basins shall be cleaned as soon as soon as possible after such spill. Ownership/ Maintenance Responsibility The construction contractor, Connolly Bros., Inc. shall be the owner and party responsible for maintenance of the stormwater management facilities during project construction. The Property Owner and any designated Facility Manager shall be the owner and party responsible for post construction-long-term maintenance of the stormwater management facilities unless other legally-binding agreements are established with another entity. ' Standard #4: Water Quality The Long-Term Pollution Prevention Plan ' ➢ Good housekeeping practices: Prevent or reduce pollutant runoff from the project development through the use of parking lot sweeping, erosion and catch basin cleaning. 4 Operation and Maintenance Plan and LTPPP, Thermal Circuits, #1 Technology Way, Salem, MA ' March 20, 2017 ' ➢ Provisions for storing materials and waste products inside or under cover: All materials stored on site shall be stored in a neat and orderly fashion in their appropriate containers and under a roof or other secure enclosure. Waste products should be placed in secure receptacles until they are emptied by a licensed solid waste management company in Massachusetts. 1 ➢ Requirements for routine inspections and maintenance of stormwater BMPs: Follow the guidelines outlined above. ➢ Spill prevention and response plans: o Prevention: All materials stored on site shall be stored in a neat and orderly fashion in their appropriate containers and under a roof or other secure enclosure. Products will be kept in their original containers with the original manufacturer's label. Products should not be mixed with one another unless recommended by the manufacturer. If possible, all of the product should be used up before disposing of the container. The manufacturer's recommendations for proper use ' and disposal should be followed. o Response: Manufacturer's recommended methods for cleanup shall be followed. Spills should be cleaned up immediately after discovery. The spill area shall be kept well ventilated and ' personnel shall wear appropriate protective clothing to prevent injury from contact with a hazardous substance. Spills of toxic or hazardous material shall be reported to the appropriate State and/or local authority in accordance with local and/or State regulations. t ➢ Provisions for maintenance of lawns, gardens, and other landscaped areas: Maintenance of the landscaped areas shall be scheduled and supervised by the Property Owner or their designated Facility Manager (if any). ➢ Requirements for storage and use of fertilizers, herbicides and pesticides will be in compliance with all ' applied laws: o Fertilizers: Fertilizers shall be applied in the minimum amounts recommended by the manufacturer. Once applied, fertilizers shall be worked into the soil to limit exposure to ' stormwater. Storage shall be under a roof or other secure enclosure. The contents of any partially-used bags of fertilizer shall be transferred to a sealable plastic bag or bin to avoid spills. o Herbicides and Pesticides: Store herbicides and pesticides in original containers that are closed and labeled, in a secure area out of reach of children and pets. Avoid storing in damp areas where containers may become moist or rusty. Herbicides and pesticides shall not be stored near food. Follow the label instructions strictly about where and how much to apply. Do not put herbicides and pesticides in the trash or down the drain. Use rubber gloves when handling, and use an appropriate cartridge mask if using products extensively. ➢ Provisions for solid waste management: Waste products shall be placed in secure receptacles until ' they are emptied by a solid waste management company licensed in Massachusetts. ➢ Pet waste management provisions: The responsibility of managing pet waste lies with the individual ' pet owner to perform the clean up and disposal of their pet waste. ➢ Provisions for operation and management of septic systems: Not applicable. This project will have sewer service. 5 ' Operation and Maintenance Plan and LTPPP, Thermal Circuits, #1 Technology Way, Salem, MA ' March 20, 2017 ➢ Snow disposal and plowing plans relative to Wetland Resource Areas: Snow disposal will be in accordance with the Department of Environmental Protection, Bureau of Resource Protection, Snow Disposal Guidelines, Guideline No. BRPG01-01, effective March 8, 2001. In general, snow will be 1 plowed in accordance with standard operating procedures. ➢ Winter road salt and/or sand use and storage restrictions: o Salt/Sand (if used): Whenever possible, use of environmentally friendly alternatives, i.e. calcium chloride and sand instead of salt for melting ice, will be considered. ' Standard #10: Illicit Discharge Statement Provisions for prevention of illicit discharges to the stormwater management systems: I ' There are no proposed illicit discharges to the proposed stormwater management systems. However, by definition, an illicit discharge does not include discharges from the following activities or facilities: firefighting, water-line flushing, landscape irrigation, uncontaminated groundwater, potable water sources, foundation drains, air conditioning condensation, footing drains, water used for street washing and water used ' to clean buildings without detergents. See the information presented in the Hayes Engineering, Inc. March 2017 "Thermal Circuits, #1 Technology Way, Salem, MA" plan set for the proposed locations of the drainage system, stormwater management BMPs, and utilities. Upon review of said plans, it is evident that there are no entries of illicit discharges into the stormwater management system. The owner shall be responsible for verifying that there are no illicit discharges to the stormwater management system (discharges of water into the system other than stormwater) after the system has been constructed. ' ➢ Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan: The responsibility lies with the Property Owner and any designated Supervisor or Property Manager. ➢ List of emergency contacts for implementing Long-Term Pollution Prevention Plan for the Thermal Circuits building addition: The responsibility lies with the Property Owner and any designated Facility ' Manager to provide the emergency contact information to the Conservation Commission. Current Owner and Contact: KAK Realty Trust, Anthony Klein, Trustee ' #1 Technology Way Salem, MA 01970 6 Operation and Maintenance Plan and LTPPP, Thermal Circuits, #1 Technology Way, Salem, MA 1 March 20, 2017 ' STORMWATER MANAGEMENT SYSTEM INSPECTION AND MAINTENANCE FORM THERMAL CIRCUITS BUILDING ADDITON #1 & 6 TECHNOLOGY WAY SALEM, MASSACHUSETTS INSPECTIONS TO BE CONDUCTED AS SPECIFIED IN THE 2017 OPERATION AND MAINTENANCE PLAN AND ORDER OF CONDITIONS Maintenance and repair records for Addition stormwater management system must be kept on site. Date: Inspected By: Days Since Last Rainfall: Amount of Last Rainfall: BMP BMP BMP Corrective Action Needed Installed at Maintenance And Notes ' Grade? Required or (circle one) performed? circle one Catch Basin Yes No Yes No ' (Inspect Grates, Basin Structure, Pipes, Hood, Measure Sediment depth). Cultec Chambers Yes No Yes No (Inspect access port and pipes for clogging, measure sediment depth) VortSentry Chamber Yes No Yes No (Inspect access port or grate for damage, measure sediment& oil depth) Level Spreaders Yes No Yes No Additional Comments: 7 1 Section F ' Construction Pollution Prevention Plan & Erosion and Sedimentation Control Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 SITE DESCRIPTION Proiect Name and Location: (Latitude, Longitude, or Address) Proposed Addition to Thermal Circuits Manufacturing Building #1 & 6 Technology Way Salem, MA 01970 Owners Names and Addresses ' Tech Way Associates LLC #1 Technology Way Salem, MA 01970 ' Description: (Purpose and Tvpes of Soil Disturbing Activities) The project consists of constructing a new manufacturing/ office addition with associated parking areas, drainage system and utility reconfiguration, stormwater management ' BMPs, and landscaping. Soil disturbing activities include: installation of erosion and sediment control devices; pavement and structure removal, excavation; building construction, filling, grading, paving, trenching and utility installation, stormwater BMP ' construction, and final loaming and seeding. ' Y Sequence of Major Activities The order of activities shall be as follows: 1. Install erosion and sediment control devices (including "Silt Bag" or other ' a dewatering device); 2. Remove existing structures, pavement, riprap piles, utilities and drainage; ' 3. Clear and grub vegetated locations; 4. Excavate areas to subgrade; 5. Commence addition construction; 6. Commence stormwater BMP construction; 7. Trench, install utility and drainage lines, and back fill as needed; 8. Commence new parking area construction; ' 9. Install curbing at parking area; 10. Pave existing and new parking/driveway areas; 11. Loam and seed all disturbed areas 12.Final inspection of drainage and stormwater structures. Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 CONTROLS ' Erosion and Sediment Control Stabilization Practices The Site Contractor/Proiect Manager ("Manager") is responsible for ensuring that I ' erosion and sedimentation control practices and controls are followed upon commencement of, and during project construction. A. Protecting and Minimizing Exposed Areas The project will temporarily leave bare earth open to erosion. Steps shall be taken to minimize this area of exposure by preserving existing vegetation and providing soil stabilization. Equipment and trucks shall be routed only over the existing pavement or areas of proposed work and workers shall minimize foot traffic in vegetated areas adjacent to the work area as much as possible. During site work, utilization of stabilization techniques is necessary for controlling erosion on exposed areas, including grading, seeding and otherwise stabilizing the areas. B. Sediment And Erosion Control/ Soil Stabilization i) Prior to any construction occurring adjacent to identified resource areas (shown on the plan and/or marked in the field), proper erosion and siltation ' barriers shall be installed so that throughout and until completion of construction, those areas will be afforded maximum protection. Temporary stockpiles of soil shall be surrounded with an erosion control barrier to ' prevent sediments from exiting the subject property. All erosion control barriers must be maintained in functioning condition and periodically inspected until areas of bare soil are stabilized to ensure that they are in functioning condition. Any accumulations of sediments present along erosion control barriers shall be removed as soon as possible after deposition in order to ensure the effectiveness of all sedimentation controls. ' On sites where grading or other work will occur on moderately steep slopes (3:1 and ' greater) located immediately upgradient of wetlands, the contractor shall work on one portion of the slope at a time, ensuring the stability of the disturbed soil by immediately loaming and seeding the slope, or otherwise vegetating the slope as desired, and installing ' erosion control mats (straw or cocoanut fiber designed for the slope steepness). If work is interrupted and the slope is to be left bare or otherwise unstabilized for duration of a day or more, a series of erosion control fences oriented parallel to the slope. Any area proposed for removal of vegetation where soil will be exposed for more than 10 days shall be mulched or otherwise treated to prevent erosion. On sediment-producing ' areas in the buffer zone, where the period of exposure will be more than 30 days, the I Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 following procedures should be followed for a cover of annual rye. When bare soils are not completely graded and vegetated by September 30 of any year, winter rye shall be planted as specified in table and mulched with three (3) inches of straw. a. Install needed surface water control measures. b. Perform all cultural operations at right angles to the slope. ' c. Establish grass or other ground cover species as recommended in the attached excerpt (pgs 144 -146) from Massachusetts Erosion and Sedimentation Guidelines for Urban and Suburban Areas, 2003. 1. Permanent Vegetational Cover To reduce damages from the potential incidence of sedimentation and runoff to other properties, and to avoid erosion on the site itself, a permanent type cover ' shall be established in disturbed areas located adjacent to resource areas immediately upon completion of grading. Seeding herbaceous cover is usually the most economical and practical way to stabilize any large area. For this site, all ' disturbed areas where lawns are desired will be seeded in fall during the period of August 1 to October 1; or in spring by May 15 with a commercial lawn mixture utilizing standard landscape methods and as recommended by the seed ' manufacturer. Grass sod or landscape plantings may be used instead of seed, if preferred. ' In upland/buffer zone areas, outside of lawn locations, where an erosion control - wildlife seed mixture is desired, prepare soil and use one of grass seed mixes lit ' through 46 as recommended in the attached excerpts (pgs 136 -139) from Massachusetts Erosion and Sedimentation Guidelines for Urban and Suburban Areas 2003, to establish a stable,permanent cover. REFERENCES Department of Environmental Protection, Bureau of Resource Protection and U.S. Environmental Protection Agency, Massachusetts Erosion and Sedimentation Guidelines for Urban and Suburban Areas: A Guide for Planners, Designers and Municipal Officials. Massachusetts Executive Office of Environmental Affairs, Boston, Massachusetts, !, Reprint: May 2003. ' Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 ' 135 Emsior.a,,d Sediment Control Pia:ti«s seeding Dates Seeding operations should be performed as an early spring seeding(April I-Mac 15)with the use of cold treated seed.A late fall early winter dormmut seeding(November t-December IS)can also be made,however the seeding ratewill need to be increased by 504- Seeding ,'Methods Seeding should be performed by one of the following methods. Drill seedings(de-awned or de-bearded seed should be used unless the drill is equipped with special features to accept armed seed). Broadcast seeding with subsequent rolling,cultipacking or tracking the seeding with small track construction equipment.Tracking should be ' oriented up and down the slope. Hydroseeding with subsequent tracking.If wood fiber munch is usecL it should be applied as a separate operation after seeding and tracking to assure good seed to soil contact ' Mulch Mulch the seedings with strawapplfed at therate of Mons per acre. Anchor the mulch with erosion control netting or fabric on sloping areas. Seed Mixtures for Permanent Cover Recommended mixtures for permanent seeding are provided on the ' following pages.Select plant species which are suited to the site conditia3s and planned use.Soil moisture conditions,often the major limiting site factor,are usuallyclassified as follows: Dn--Sands and gravels to sandy loams.No effective moisture supply from seepage or a high water table. :chis!-Well drained to moderately well drained sandy loanus,.loams.and finer:or coarser textured material with moderate influence on root zone iron seepage or a high water table. I ' Met-All textures with a water table at orvery new the soil seuface,or with endaring seepage. V.1een other factors strongly influence site conditions,the plants selected must also be tolerant of these conditions. Erasion wd Sediment Cora'ol Guideline. Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 Erosion aixl 5edimerc Control Prac-ices 137 ' Permanent Seeding Mixtures Seed,Pounds per: Mix Site Seed]fimue Acre 1.000 sf Remarks ' I Dry Little Bluestem •Use Warm Season planting procedure. - or Broomsedge 10 0.25 'Roadsides Tumble Lovegrass" I 0.10 'Sand and Gravel Stablllzatlon ' Swttchgrass 10 0.25 `Cloverrequlresinoculationwithnitrogen- fixing bacteria Bush Clover' 2 0.10 Red Top 1 0.10 'Rates toy this mix are for PLS. 2 Dry Deertongue IS 0.35 'Use Warm Season planting procedures. Broomsedge 10 0.25 "Acid sites/Mine spoil Bush Clover` 2 0.10 'Clover requires inoculation with nitrogen- fixing bacteria. ' Red Top 1 0.10 `Rates for this mix are for PLS. 3 Dry Big Bluestem 10 0.25 'Use Warm Season planting procedures. Indian Grass 10 0.25 'Eastern Pyalrie appearance Swltchgrass 10 0.25 'Sand and Gravel pits. Little Bluestem 10 0.25 `Golf Course Wild Areas Red Top or 1 0.10 ASanitary Landfill Cover seeding Perennlat Ryegrass 10 0.25 'Wildlife Areas 'OK to substitute Poverty Dropseed 1n place of Red ToplRyegrass. ' "Rates for this mix are for PLS. 4 Dry Flat Pea 25 0.60 'Use Cool Season planting procedures Red Top or 2 0.10 'Utility Rlghtsaf-Ways(tends to suppress ' Perennial Ryegrass 15 0.35 woody growth) 5 Dry Little Bluestem 5 0.10 `Use Warm Season planting procedures. Swltchgrass 10 0.25 Coastal sites Beach Pea' 20 0.45 "Rates for Bluestein and Swltchgrass are for ' Perennial Ryegrass 10 0.25 PLS. 6 Dry- Red Fescue 10 0.25 'Use Coot Season planting procedure. Moist Canada Bluegrass 10 0.25 Provides quick cover but Is non-aggressive: Perennial Ryegrass 10 0.25 will tend to allow Indigenous plant ' colonization. Red Top l 0.10 •General erosion control on variety of sites. Including forest roads.skid traits and landings. 7 Moist- Swltchgrass 10 0.25 `Use Warnr Season planting procedure. Wet Virginia Wild Rye 5 0.10 'Coastal plainillood plain Big Bluestem l5 0.35 `Rates for Bluestem and Swltchgrass are nor Red Top 1 0.10 PLS. Erosion and Sediment Control Cuidelines 1 Standard 8: Construction Period Pollution Prevention and 1 Erosion and Sedimentation Control - March 2017 738 Erosion and Sediment Control Practices Permanent Seeding Mixtti es Seed,Pounds per. Nlix Site Seed Mixtum Acre I.000si Remarks 8 Moist Creeping Bentgrass 5 0.10 'Use Cool Season planting procedures, Wet Fringed Bromegrass 5 0,10 'Pond Banks Fowl Meadowgrass 5 0.10 'Waterways.ldltch banks Bluelomt Reedgrass or Rice Cutgrass 2 0.10 ' Perennial Ryegrass 10 0.25 0 Moist Red Fescue 5 0.10 'Salt Tolerant Wet Creeping Bentgrass 2 0.10 'Fescue and Bentgrass provide low growing appearance.while ' Sedtchgrass provides tall cover for wildlife. swltchgrasa 8 0.20 Perennial Ryegrass 10 0.25 ' 10 Moist Red Fescue 5 0.10 Use Cool Season planting procedure. Wet Creeping Bentgrass 5 0.10 'Trefoil requires Inoculation with nitrogen fixing bacteria Virginia Wild Rye 8 0.20 Wood Reed Grass' 1 0,10 `Suitable for forest access roads.skid ' - Showy Tick Trefoil" 1 0.10 trails and other partial shade situations. 11 Moist Creeping Bentgrass 5 0.10 'Use Cool Season planting procedure. Wet Bluelolnt Reed Grass 1 0.10 "Suitable for waterways.pond or ditch ' banks. Virginia Wild Rye 0 Dao 'Trefoil requires Inoculation with nitrogen fixing bacteria. Fowl Meadow Grass 10 0,25 Showy Tick Trefoil' 1 0.10 ' Red Top 1 0.10 12 Wet Blue Joint Reed Grass 1 0.10 'Use Cool Season planting procedure. Canada Manna Grass 1 0.10 .OK to seed In saturated sot) conditions,but not in standing ' water. Rice Cut Grass 1 0.10 Creeping Bent Grass 5 0.10 'Suitable as stabilization seeding for created wetland. Fowl Meadow Grass 5 0.10 'All species In this mix me native to ' Massachusetts. IS Dry- American Beachgrass 18' 18' 'Vegetative planting-wRh dormant culms.3.5 culms per planting Moist centers centers 1 Id inter- Smooth Cordgrassl2-18' 12-18' "Vegetative planting with transplants. Tidal Saltmeadow Coidgrass centers centers Erosion and Sediment Control Codel roes 1 Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 II , Emsion and Sediment Central Practices 139 Notes: Species such as Tumble Loved ass.Fringed Bmmegrass,Wnod Peedgrnss.Bush Clover and Beach Petr.•.vhile kno•.vn tube commercially avaRab e Irma specifi'.seed npplrers.may not alxa?s,be av sit ble from r.+nr p rtt uhr seed supplier..The local . ' Natural Resotu es Looser v-,lionSrsae office may ire able to help t iEli te'nur'e of apply,to the event a pat ticular spedes listed in n nnti..m not he obnilied.hroeyer.it may be possible to substitute another species &1 do;iar-rex .Lrzhe,v..41.4. (PLS) Pure Live Seed Warm Season grass seecl is sold and planted on the basis of pure live seed.An adjustment is made to the bulk rate of the seed to compensate for inert material and non-viable seed.Percent of pure live sped is e calculatecl by multiplying the percent pm ity by the percent germination: (%purity)x(9•o germination)=percent PLS. For example,if the seeding rate calls for 10 tbs./acre PLS and the seed tat has a purity of 70%and germination of 775%,the FLS factor is: (.70 x.75)=.53 19 tbs.divided by.53=approx.19 tbs. Therefore.19 lbs of seed from the particular lot will need to Fl� applied to obtain 10 tbs.of pure live seed. 1 - S}teciallVole Tall.Fescue,Reed Canary Grass,Crownvetcli and Birclsfoot Trefoil are no longer iecwnmended for general erosion control use in Massachusetts due to the invasive characterlstics of each.If Uhese species are used. it is recommended that the ecosystem of the site be anahmecl tot the ' effects species havasiveness may impose.Tire mixes listed in the above mixtures include either species native to Massachusetts or non-native species that are not perceived to be invasive,as per the Massachusetts Native Plant Adydsory Committee.- Wetlands Seed Mixtures -- For newly created wetlands,a wetlands specialist should design plantings to provide the best chance of success.Do not use introduced, invasive plants like reed canarygiass(Phalaris arondinacea)or purple loosestrife(Lythrum salicaria).Using plans such as these will cause - manymore problems than they will solve. The following grasses all thrive in wetland situations: ca Fresh it'ater Cordgrass(S'panina pectlnata) Marsh`Creeping Sentgrass(Agrnstrs stofonifera.tar. Polus)ic) Sroonvsecige(Andrnpagon rnglwcus) ' ca Frsnged Biomegrass(Bronws cf tiais) 4s Slue John Reed Grass(Cafaniggmstis canedcnsis) c-; Fowl Meadow Grass(Gtvicer(a sniata) c-s Riverbank Wild Rye(Etvnms r(parka) es Rice Cutgrass(Leeisia to vzoide.$) ' e-e Stout Wood Reed(Onaa arandnlacea) a; Canada Manua Grass(Gfvicena conadensis) ' Emsion and Sediment Control Cuidehnes Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 140 Ero,ion and Sed'mem Convol Praciices Asample wetlands seed mix developed by The New Enqland Environmental Wetland Plant Nursery is shown on the following page. - ' Wetland Seed bivcture The New England Environmental Weiland Plant Nursery has developed a seed mixture which is specifically designed to be used In wetland replication projects and stormwater detention basins.It ' is composed of seeds from a variety of indigenous wet]and species. .Establishing anative wetlind plant understoryin these areas provides quick eiosion control.wildlife food and cover.and helps to reduce the establishment of undesirable invasive,species such as Phragmites and ' purple loosestrile(Lythrurn salicaria),The species have been selected to represent varying degrees of drought tolerance,and will establish themselves based upon microtopography and the resulting variation in soil moisture. t ' Eros on and Sedimen:Cow-ol Cu delines 1 Standard 8: Construction Period Pollution Prevention and 1 Erosion and Sedimentation Control — March 2017 ' Erosion and Sediment Control Practices jot CDMMGa Natne (Scientific lame) °.:u is Mix Continents Lund Sedge 30 A tow ground cover that tolerates mesic sites (Carex lurfda) in addition to saturated are.m prolific seeder in second growling season. Foal A4eadow Goa;: 25 Prolific seed producer that is a valuable (Clycerfa Conadensis) wildlife food source: FrsgedSedse 10 Amedium to large sedge that tolerates (Corex CAW saturated areas:good seed producer. ' Joe-Pye Weed 10 Flowering plant that is valuable for wildlife (Eupatoriadelphus macutatus) cover.Grows to 4 feet. 3roa1 Sed=_e 10 Tolerates a wide range of hydrologic ' (Carex spo. Orales group) conditions, 1{r001,ras5 5 Toleratesfluctuating hydrology. (scirpus cyperinus) Soae:et 5 nowering Plant that is valuable forwildlife (Eapatodum perlolianan;) cover.Grows to 3 feet. ' Tussor3 Sedge d Grows in elevated hummocks on wet sites; (Carexsnccra) may grow rhiiomonously on drier sites. Blue Vereata d A native plant that bears attractive,blue ' (Verbena hostata) flowers. The recommended application rate is one pound per 5,000 square feet when used as an ' understory cover.This rate should be increased to one pound per 2;500 square feet for detention basins and other sites which require a very dense cover.For best results, a late fall application is recommended.This mix is not recommended for standing water, ' Erosion nnd5edlrnert Contra Guidelines Standard 8: Construction Period Pollution Prevention and 1 Erosion and Sedimentation Control — March 2017 N2 "Erosion and Sed.ment Control Practices Maintenance Inspect seeded areas for failure and make necessary repairs and reseed immediately, Conduct or follow-up survey after one year and replace failed plantswhere necessary, If vegetative cover is inadequate to prevent rill erosion,overseed and fertilize in accordance with soil test results. If a stand has less than 40 cover, reevaluate choice of plant materials and quantities of lime and fei tilizer.Re-establish the stand following seedbed preparation and seeding recommendations,omitting time and fertilizer in the absence of soil test results.If the season presents resowing, mulch or jute netting is an effective temporary cover. Seeded weas should be fertilized during the second growing season. Lime and fertilize thereafter at periodic intervals,as needed. ' References North Carolina Department of Environment,Health,and Natural Resources, ' Erosion and Sediment Control Field Harnral.Raleigh,NC.February 1991. Personal communication,Richard J. DeVergilio, LISDA.Natural Re sources Conservation Service,Amherst,MA U.S.Environmental Protection Agency;SEu.,m LSnte.,M1fenager+eent For Consh-fiction AcHyirfes,EPA-832-R-92-005,Washington.DC.:September. 1992. ' Washington State Department of Ecology Stormun ter Vanod rnent Manual for the Petge l Sonud Basin,Olympia,%VA:February 1992. Seeding, Temporary Planting rapid-growing annual grasses, small grains;or legumes to provide initial,temporary cover for erosion control on disturbed areas. ' Purpose To temporarily stabilize areas that will not be brought to final grade for a r period of more than 30 working days. To stabilize disturbed areas before final grading or ina season not suitable for permanent seeding. Temporary seeding controls runoff and erosion until permmtent vegetation or other erosion control measures can be established.. Root systems hold down the soils so that they are less apt to be tarried offsite by storm water runoff or wind. Temporary seeding also reduces the problems associated with mud and ' dust from bare soil surfaces during construction. Erosion ane Sediment Con:rd Guidelines Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 Erosion and Sed men-Control Practices 943 ' Where Practice Applies On any cleared,unvegetated,or sp u sely vegetated soil surface where vegetative corer is needed for less than one year.applications of this practice include diversions,dams.temporary sediment basins. temporary road banks,and topsoil stockpiles. Where permanent structures:ue to be installed or extensive re- grading of the area will occur prior to the establishment of permanent ' vegetation. Areas which will not be subjected to heavy wear by construction traffic. Areas sloping up to 10`S for 100 feet or less,where tempormy ' seeding is the only practice used. Advantases This is a relatively inexpensive forth of erosion control but should only be used on sites awaiting permanent plmtting or grading.Those sites should have permanent measures used. Vegetation will not only prevent erosion from occurring,but will also trap sediment in runoff from other parts of the site. Temporary seeding offers fairly rapid protection to exposed areas. r v i siadvantagest P robl ems Temporaryseedingseeding is only viable when there is a sufficient window in time for plants to grow and establish cover, It depends heavily on the season and rainfall rate for success, If sown on subsoil,growth will be poor unless heavily fertilized ' and limed. Because overfertilization can cause pollution of stoi mwater runoff,other practices such as mulching alone maybe more appropriate.The potentia] for over-fertilization is an even worse ' problem in or near aquatic systems. Once seeded,ar ens should not be travelled over. Inigation may be needed for successful growth.Requlm irrigation is not encouraged because of the expense and the potential for erosion ' in areas that are not regularly inspected. Planning Considerations Temporary seedings provide protective cover for less than ' one yema areas must be reseeded annual or planted with perennial. vegetation. Temporary seeding is used to protect earthen sediment control practices and to stabilize denuded areas that will not be brought - into final grade for several weeks or months.Temporary seeding can provide a nurse crop for permanent vegetation.provide residue for soil protection and seedbed preparation, and help present dust production during construction. E,osianand Sedment Contin Cuidehres Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 1 144 Erasion and Sediment Contra)Practices ' Use lowmaintenance native species wherever possible. Planting should be timed to minimize the need for irrigation. Sheet erosion,caused by the impact of rain on bare soil,is the ' source of most fine pioticles in sediment.To reduce this sediment load in nnwff.the soil surface itself should be protected.The most efficient and economical means of controlling sheet and rill erosion is to establish vegetative covet..Annual plants which sprout rapidly and saj'�iye for only ' one growing season are suitable for establishing temporary vegetative cover.Temporary seeding is effective when combined with const ruction phasing so bare areas of the site are minimized at all times. Temporary seeding may prevent costly maintenance operations on other erosion controf systems.For example,sediment basin dean-guts will ' be reduced if the drainage area of the basin is seeded where grading and construction are not taking place.Perimeter dikes will be more effective if not choked with sediment. Proper seedbed preparation and the use of quality seed are important in this practice just as in permanent seechng.Failure to carefuliy follow sound agronomic recommendations will often result in an inadequate stand of vegetation that provides little or no erosion control. Soil that has been compacted by heavy traffic at machinery jury need to be loosened.Successful growth usually requires that the soil be tilled before the seed is applied.Topsoiling is not necessary for temporary seeding;however,it may improve the chances of establishing temporary vegetation in an area. Planting Procedures Time of Planting I ' Plantingshould preferably be done between April 1 and June 30,and September 1 througli September 30.If planting is dune in the months of July and August,hiigation may be iecluirecl.If planting is clone between October 1 and March 3l,mutdiingshoulcl be applied imnrediatelyafter ill planting.if seeding is done during the summer months,irrigation of some sort will probably be necessary. Site Preparation Before seeding,install needed surface runoff control measures such as gradient terraces,interceptor dikelswales,level spreaders,and sediment basins. Seedbed Preparation The seedbed should be fimr with a fairly fine surface. Perform all cultural operations across or at right angles to the slope. See Topsoilingand Surface Roughening for more information on seedbed preparation.A tninfmunl of 2 to 4 inches of tilled topsoil is required. Emnon and 5e0.imenc Ccnh'ol Guideline: i Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 Erosion and-,ediment Control Practices YQ5 ' Liming and Fertilization Apply uniformly 2 tons of ground limestone per acre(100 lbs,per 1,000 Sq.h.)or according to soil test. ' Apply uniformly 10-10-10 analysis fertilizer at the rate of 400 lbs,pee acre(14 Ibs.per 1,000 Sy.Ft.)or as indicated by soil test.Forty percent of the nitrogen should be in organic form. Work in lime and fertilizer to a depth of 4 inches using any suitable - equipment. Seedings for Temporary Cover Species Seeding Rates lbst'agJ4. Recommended 1 000 SOIL ,A= Seeding Dares I ' Annual Ryegrass l 40 April I to June I Aug.15 to Sept I5 Foxtall Millet 0.7 30 May I to June 30 Oats 2 80 April I to July I August 15 to Sept.15 Winter Rye 3 120 Aug.15 to Oct. l5 "Hydro-seeding"applications with appropriate seed-mulch-fertilizer mixtures may also be used. ' Seeding Select adapted species from the accompanying table. Apply seed uniformly according to the rate indicated in the table by broadcasting,chilling or hydraulic application. Coyer seeds with suitable equipment as follows. Rye grass 2.3 inch ..Millet l;to?<inch .Oats I to 1-1r2 inches .-Winter rye I to 1-1i2 inches. ' Mulch Use an effective mulch,such as clean grain straw;tacked mrdi'mtied down with netting to protect seedbed and encourage plant growth. ' Common Trouble Points Linre and fertilizer not incorporated to al least d inches May be lost to runoff or remain concentrated near the surface where they may inhibit germination. ' lblrrlch rate inadequate or straw mulch not lacked damn Results in poor germination or failure,and erosion damage.Repair damaged meas,reseed and mulch. ' Emsos and Sediment Comrol Guidelines ' Standard 8: Construction Period Pollution Prevention and 1 Erosion and Sedimentation Control — March 2017 1445 Erosion and Sediment Contmi Practice: .Iututal tpegrass usedjorientporatyseeding Ryegrass reseeds itself and makes it difficult to establish a good cover of permanent vegetation. ' .Seed not broadcast a,enly or rate too low Results in patchy growth and erosion. Maintenance ' Inspect within 6 weeks of planting to see if stands to e adequate. Check for damage after hemy rains.Stands should be.uniform and dense. Fertilize,reseed,and mulch d¢unaged and spaese areas immediately.Tack mlie down mulch as necessary. ' Seeds should be supplied with adequate moisture.Furnish water as needed,especiallyin abnormally hot or cry weather or on adverse sites. Water application rates should be controlled to prevent runoff. References, Mwsachusetts Deportment of Environmental Protection,Office of Aateished Management,Nonpoint Soutce Program,Massachusetts N......;,st.S,,,,rge afayaee,yeyt May.,al. Boston,Massachusetts.June, 1993. North Carolina Department of Environment.Health.and Natural Resources, Erosion aed.Sad;meyt Control Feld Vwwml,Raleigh.NC, February 1991. U.S.Environmental Protection Agency,Story,Water Mayaeeysent For Cyy<n.wt;,n Aet;oit;,.EPA-932-R-92-005,Washington,DC,September. 1992. ' Washington State Department of Ecology;Ste,nrusater Management Manual for thePt,est SowsdBasin,Olyvnpia,WA.February:i992. ' Silt Curtain A temporary sediment barrier installed parallel to the bank of a stream or lake.Used to contain the sediment produced by construction operations on the bank of a stream or lake and allow for its removal. Where Practice Applies The silt curtain is used along the banks of streams of lakes where sedinnent cmdd pollute of degt ode the stream of lake. Erosion and i=d imen-,Conn cl Guideline: ' Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control - March 2017 Structural Practices Silt fence/Silt sock—shall be installed as shown on the approved plans to help prevent ' erosion and sedimentation to the downstream wetland resources on the project. Catch Basins—shall be fitted with silt sack devices during construction to prevent the accumulation of sediments in the catch basin sumps. Catch basins are to be cleaned as needed during construction using a truck-mounted vacuum device. Stormwater Management ' The proposed stormwater management plan in the drainage analysis outlines the impacts of stormwater runoff for the project as it related to the downstream areas of comparison. Elements incorporated in the design of the stormwater management plan include the ' following best management practices (BMPs): 1. Deep Sump Catch basins fitted with hood. I ' 2. Cultec R-28OHD Infiltration chambers. 3. Forebay Basin 4. VortSentry HS36 Water Quality Chamber _ 5. Level Spreader. Utilization of"hese BMPs as part of the overall watershed management plan will be instrumental in reducing the peak rate of runoff as well as the volume of runoff from the site into the wetland. ' OTHER CONTROLS ' Waste Dis Waste Materials: all waste material shall be collected and stored in secure metal dumpsters rented from a licensed solid waste management company in Massachusetts. ' The dumpsters shall meet all local and State solid waste management regulations as outlined in 310 CMR 19.00. All trash and construction debris generated on site shall be disposed of in the dumpsters. The dumpsters shall be emptied as often as necessary during construction and transferred to an approved solid waste facility licensed to accept municipal solid waste and/or construction and demolition debris. No construction waste shall be buried on site. All personnel shall be instructed regarding the correct procedure for waste disposal. Hazardous Waste: All hazardous waste materials shall be disposed of in a manner ' specified by local or State regulation or by the manufacturer. Site personnel shall be instructed in these practices. Sanitary Waste: All sanitary waste shall be collected from portable units, as needed, by ' a septage hauler licensed in Massachusetts, in accordance with the requirements of the local Board of Health. Offsite Vehicle Tracking: Construction entrance and exit shall be via Technology Way. A stone tracking pad shall be installed at the entrance to the site. Accumulated sediments must be removed from the ' Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control - March 2017 tracking pad on a regular basis and from the site pavement via street sweeping operations as necessary. ' TIMING OF CONTROLS/MEASURES As indicated in the Sequence of Major Activities, the installation of erosion and sediment control devices and installation of stabilized construction entrances shall be in place prior to major earth excavation activities. Areas where construction activities are exposed more than two months, but less than 12 months shall be stabilized with the temporary ' stabilization practices referred to above. Once construction activity is completed in an area, that area shall be stabilized with permanent seed and mulch. ' MAINTENANCEANSPECTION PROCEDURES ' Erosion and Sediment Control Inspection and Maintenance Practices' The following items represent the inspection and maintenance practices that shall be used to maintain sediment and erosion control for the project. ' 1. All control measures shall be inspected at least once every fourteen (14) days and following any storm event of 0.25 inches or greater. 2. All measures shall be maintained in good working order; if a repair is necessary, it shall be initiated within 24 hours of the report. 3. Built up sediment shall be removed from erosion control when it has reached one- third the height of the fence. 4. Siltation Control shall be inspected for depth of sediment and tears. 5. The catch basin grates shall be inspected for grate elevation relative to current surface condition; condition of silt sacks, and degree to which sediment has accumulated on the grate and in the sump of the catch basin. 6. Temporary and permanent seeding and any plantings shall be inspected for bare spots, washouts, and healthy growth. 7. A maintenance inspection report shall be prepared following each inspection. A copy of the report form to be completed by the inspector is attached with this document. 8. The Site Contractor/Project Manager("Manager") shall select three individuals who will be responsible for inspections, maintenance and repair activities. The ' "Manager" shall be responsible for filling out the inspection and maintenance report. 9. Personnel selected for inspections and maintenance responsibilities shall receive training from the "Manager". They will be trained in all the inspection and maintenance practices necessary for keeping the erosion and sediment control devices used on site in good working order. 1 ' Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 Non-Stormwater Discharges ' It is expected that the following non-stormwater discharges will occur from the site during the construction period: 1. Water from water line flushing 2. . No non-stormwater discharges shall be directed to unstabilized earth surfaces. INVENTORY FOR POLLUTION PREVENTION PLAN The materials or substances listed below are expected to be present on site during ' construction: • Concrete • Wood ' • Structural Steel • Masonry Block • Other Building Materials ' • Fiber Glass Insulation • Fertilizers • Petroleum Based Products • Cleaning Solvents • Paints (enamel and latex) ' • Tar • Waterproofing Materials ' SPILL PREVENTION The following are the material management practices that shall be used to reduce the risk ' of spills or other accidental exposure of materials and substances to stormwater runoff. Equipment fueling and Storage: ' Equipment and associated fuels and lubricants shall be stored in locations outside of the buffer zone. Good Housekeeping: The following good housekeeping practices must be followed on site during the ' construction project. 1. A concerted effort shall be made to store only enough product required to complete a particular task 2. All materials stored on site shall be stored in a neat and orderly fashion in their appropriate containers and, if possible, under a roof or other secure enclosure ' 3. Products shall be kept in their original containers with the original manufacture's label ' Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 4. Substances shall not be mixed with one another unless recommended by the manufacturer ' 5. Whenever possible, all of a product shall be used up before disposing of the container 6. Manufacture's recommendations for proper use and disposal shall be followed ' 7. The site superintendent shall inspect daily to ensure proper use and disposal of materials on site. Hazardous Products: The following practices are intended to reduce the risks associated with hazardous materials. 1. Products shall be kept in original containers unless they are not re-sealable ' 2. Where feasible, the original labels and material safety data shall be retained, whereas they contain important product information 3. If surplus product must be disposed, follow manufacturer's or local and State ' recommended methods for proper disposal. ' PRODUCT SPECIFIC PRACTICES The following product specific practices shall be followed on site: Petroleum Products: All on site vehicles shall be monitored for leaks and receive regular preventative maintenance to reduce the risk of leakage. Petroleum products shall be stored in tightly sealed containers which are clearly labeled. Any bituminous concrete or asphalt substances used on site shall be applied according to the manufacturer's recommendations. FertTiz Fertilizers shall be applied in the minimum amounts recommended by the manufacturer. ' Once applied, fertilizers shall be worked into the soil to limit exposure to stormwater. Storage shall be in a covered shed or trailer. The contents of any partially used bags of fertilizers shall be transferred to a sealable plastic bag or bin to avoid spills. Pain All containers shall be tightly sealed and stored when not required for use. Excess paint shall not be discharged into any catch basin, drain manhole, or any portion of the stormwater management system. Excess paint shall be properly disposed of according to ' manufacturer's recommendations or State and local regulations. ,Concrete a Trucks Concrete trucks shall not be allowed to wash out or discharge surplus concrete or drum wash water on site. ' Standard 8: Construction Period Pollution Prevention and ' Erosion and Sedimentation Control — March 2017 SPILL CONTROL PRACTICES The Site Contractor/Project Manager ("Manager") is responsible for ensuring that materials spill control practices are followed upon commencement of, and during project construction. ' In addition to the good housekeeping and material management practices discussed in the previous sections of this plan, the following practices must be followed for spill prevention and cleanup: 1. Manufacturer's recommended methods for cleanup for on-site materials must be readily available at the construction office, and site personnel shall be made aware of the procedures and the location of the information. 2. Materials and equipment necessary for spill cleanup shall be kept in the material storage area on site. Equipment and materials shall include, but not be limited to brooms, dust pans, mops, rags, gloves, goggles, kitty litter, sand sawdust, and plastic and metal trash containers specifically for this purpose. 3. All spills shall be cleaned up immediately after discovery. 4. Catch basins and stormwater BMPs in the vicinity of the spill shall be cleaned by a professional vacuum truck cleaning service immediately after the spill. 5. The spill area shall be kept well ventilated and personnel shall wear appropriate protective clothing to prevent injury from contact with hazardous substance. 6. Spills of toxic or hazardous material shall be reported to the appropriate State and/or local authority in accordance with local and/or State regulations. 7. The spill prevention plan shall be adjusted to include measures to prevent a particular type of spill from reoccurring and how to clean up the spill if there is ' another occurrence. A description of the spill, what caused it, and the clean up measures shall also be included. 8. The "Manager" shall be the spill preventions and cleanup coordinator. The ' "Manager" shall designate at least three other site personnel who will be trained in the spill control practices identified above. Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control — March 2017 ' THERMAL CIRCUITS BUILDING ADDITION, #1 TECHNOLOGY WAY, SALEM STORMWATER POLLUTION PREVENTION PLAN INSPECTION AND MAINTENANCE REPORT FORM TO BE COMPLETED EVERY 14 DAYS AND WITHIN 24 HOURS OF A RAINFALL EVENT OF 0.5 INCHES OR GREATER ' Inspector: Date: Days Since Last Rainfall Amount Of Rain: I ' BMP BMP BMP Corrective Action Needed Installed? Maintenance And Notes (circle one) Required? circle one ' 1 Silt Fence/Silt Sock Yes No Yes No (Inspect for Rips, Tears, Accumulated Sediment) 2 CB Silt sack Yes No Yes No (Inspect for Rips, Tears, Accumulated Sediment) 3 Cultec Chamber System Yes No Yes No (Check if Installed ' &functioning correctly) 4 VortSentry HS36 Yes No Yes No (Check if Installed ' &functioning correctly) 5 Level Spreader Yes No Yes No ' (Inspect for Accumulated Sediment) 6 Catch Basins Yes No Yes No ' Condition of Grates, sump, hood, pipes, amount of sediment) ' 7 Forebay Sediment Trap Yes No Yes No CHANGES REQUIRED TO THE POLLUTION PREVENTION PLAN: ' REASONS FOR CHANGES: Attachments Cultec Chamber ' Operation & Maintenance Guidelines Contech VortSentry HS Guide Existing and Proposed Watershed Plans �ac�t�ora F echa r�,� 'ear R� �, • -to Wa C iamb °Cfimb 1�/i h S ip R, D'TOOI SI � � �• r,�-��'7 i k r . � a 7 .� 1F�•,t� �1"`�t ', o i r inrr �11�•. � ug1�1 Utl{�*�^i " '�,�. `"k t ' wz (u4 Operation & Maintenance This manual contains guidelines recommended by CULTEC, Inc. and may be used in conjunction with, but not to supersede, ' local regulations or regulatory authorities. OSHA Guidelines must be followed when inspecting or cleaning any structure. Introduction ' The CULTEC Subsurface Stormwater Management System is a high-density polyethylene (HDPE) chamber sys- tem arranged in parallel rows surrounded by washed stone. The CULTEC chambers create arch-shaped voids within the washed stone to provide stormwater detention, retention, infiltration, and reclamation. Filter fabric is placed between the native soil and stone interface to prevent the intrusion of fines into the system. In ' order to minimize the amount of sediment which may enter the CULTEC system, a sediment collection device (stormwater pretreatment device) is recommended upstream from the CULTEC chamber system. Examples of pretreatment devices include, but are not limited to, an appropriately sized catch basin with sump, pretreat- ment catchment device, oil grit separator, or baffled distribution box. Manufactured pretreatment devices may also be used in accordance with CULTEC chambers. Installation, operation, and maintenance of these devices shall be in accordance with manufacturer's recommendations. Almost all of the sediment entering the storm- water management system will be collected within the pretreatment device. ' Best Management Practices allow for the maintenance of the preliminary collection systems prior to feeding the CULTEC chambers. The pretreatment structures shall be inspected for any debris that will restrict inlet flow rates. Outfall structures, if any, such as outlet control must also be inspected for any obstructions that ' would restrict outlet Flow rates. OSHA Guidelines must be followed when inspecting or cleaning any structure. Operation and Maintenance Requirements ' I. Operation CULTEC stormwater management systems shall be operated to receive only stormwater run-off in accordance 1 with applicable local regulations. CULTEC subsurface stormwater management chambers operate at peak per- formance when installed in series with pretreatment. Pretreatment of suspended solids is superior to treat- ment of solids once they have been introduced into the system. The use of pretreatment is adequate as long as the structure is maintained and the site remains stable with finished impervious surfaces such as parking ' lots, walkways, and pervious areas are properly maintained. If there is to be an unstable condition, such as improvements to buildings or parking areas, all proper silt control,measures shall be implemented according to local regulations. 1 II. Inspection and Maintenance Options A. The CULTEC system may be equipped with an inspection port located on the inlet row. ' The inspection port is a circular cast box placed in a rectangular concrete collar. When the lid is removed, a 6-inch (150 mm) pipe with a screw-in plug will be exposed. Remove the plug. This will provide access to the CULTEC Chamber row below. From the surface, through this access, the sediment may be measured at this location. A stadia rod may be used to measure the depth of sediment if any in this row. If the depth of sediment is in excess of 3 inches (76 mm), then this row should be cleaned with high pressure water through a culvert cleaning nozzle. This would be carried out through an upstream manhole or through the CULTEC Storm Filter Unit (or other pre-treatment device). CCTV inspection of this row can ' be deployed through this access port to determine if any sediment has accumulated in the inlet row. B. If the CULTEC bed is not equipped with an inspection port, then access to the inlet row will be ' through an upstream manhole or the CULTEC Storm Filter. 1. Manhole Access ' This inspection should only be carried out by persons trained in confined space entry and sewer inspection services. After the manhole cover has been removed a gas detector must be lowered into the manhole to ensure that there are not high concentrations of toxic gases present. The inspector should be lowered into the ' manhole with the proper safety equipment as per OSHA requirements. The inspector may be able to observe sediment from this location. If this is not possible, the inspec- tor will need to deploy a CCN robot to permit viewing of the sediment. ' Z For more information,contact CULTEC at (203) 775-4416 or visit www.cultec.com. Operation & Maintenance CULTEC 2. StormFilter Access ' Remove the manhole cover to allow access to the unit. Typically a 30-inch (750 mm) pipe is used as a riser from the StormFilter to the surface. As in the case with manhole access, this access point requires a technician trained in confined space entry with proper gas detection equipment. This individual must be equipped ' with the proper safety equipment for entry into the StormFilter. The technician will - be lowered onto the StormFilter unit. The hatch on the unit must be removed. Inside the unit are two filters which may be removed according to StormFilter maintenance ' guidelines. Once these filters are removed the inspector can enter the StormFilter unit to launch the CCN camera robot. C. The inlet row of the CULTEC system is placed on a polyethylene liner to prevent scouring ' of the washed stone beneath this row. This also facilitates the Flushing of this row with high pressure water through a culvert cleaning nozzle. The nozzle is deployed through a manhole or the StormFilter and extended to the end of the row. The water is turned on and the inlet row is back-flushed into the manhole or StormFilter. This water is to be removed from the ' manhole or StormFilter using a vacuum truck. III. Maintenance Guidelines t The following guidelines shall be adhered to for the operation and maintenance of the CULTEC stormwater management system: A. The owner shall keep a maintenance log which shall include details of any events ' which would have an effect on the system's operational capacity. B. The operation and maintenance procedure shall be reviewed periodically and changed to meet site conditions. ' C. Maintenance of the stormwater management system shall be performed by qualified workers and shall follow applicable occupational health and safety requirements. D. Debris removed from the stormwater management system shall be disposed of in accordance with applicable laws and regulations. ' IV. Suggested Maintenance Schedules A. Minor Maintenance The following suggested schedule shall be followed for routine maintenance during the regular operation of the stormwater system: ' Monthly in first year Check inlets and outlets for clogging and remove any debris as required. Spring and Fall Check inlets and outlets for clogging and remove any debris as ' required. One year after commissioning and every third Check inlets and outlets for clogging and remove any debris as year following required. B. Major Maintenance The following suggested maintenance schedule shall be followed to maintain the performance of the CULTEC stormwater management chambers. Additional work may be necessary due to insufficient performance and other issues that might be found during the inspection of the ' stormwater management chambers. (See table on next page) 3 For more information, contact CULTEC at (203) 775-4416 or visit www.cultec.com. ss4C 7 !til Majgr Mai tens contint.�tl) / `� 1. 5 '✓.��; rlt; � A.: C .q 5. a'.. �.tv,),•vi_ fC) `..if t YS', ;. " ` Inlets and Outlets Every 3 years Obtain documentation that the inlets, outlets and vents have been II cleaned and will function as intended. Spring and Fall Check inlet and outlets for clogging and remove any debris as re- . quired. ' CULTEC Stormwater 2 years after commis- Inspect the interior of the stormwater management chambers Chambers sioning through inspection port for deficiencies using.CCN or comparable technique. ' Obtain documentation that the stormwater management chambers and feed connectors will function as anticipated. 9 years after commis- Clean stormwater management chambers and feed connectors of ' sioning every 9 years any debris. following Inspect the interior of the stormwater management structures for deficiencies using CCN or comparable technique. ' Obtain documentation that the stormwater management chambers and feed connectors have been cleaned and will function as intend- ed. ' 45 years after com- Clean stormwater management chambers and feed connectors of missioning any debris. Determine the remaining life expectancy of the stormwater man- agement chambers and recommended schedule and actions to reha- bilitate the stormwater management chambers as required. Inspect the interior of the stormwater management chambers for deficiencies using CCN or comparable technique. 45 to 50 years after Replace or restore the stormwater management chambers in accor- commissioning dance with the schedule determined at the 45-year inspection. Attain the appropriate approvals as required. Establish a new operation and maintenance schedule. Surrounding Site Monthly in 1-year Check for depressions in areas over and surrounding the stormwater management system. ' Spring and Fall Check for depressions in areas over and surrounding the stormwater management system. Yearly Confirm that no unauthorized modifications have been performed to ' the site. For additional information concerning the maintenance of CULTEC Subsurface Stormwater Management Chambers, please contact CULTEC, Inc. at 1-800-428-5832. iM 9 c: n CULTEC ' Chamber of Choice'" CULTEC, Inc. ' 878 Federal Road • P.O. Box 280 • Brookfield, CT 06804 Phone: 203-775-4416 • Toll Free: 800-4-CULTEC . Fax: 203-775-1462 Web: www.cultec.com • E-mail: custservice@cultec.com ' ©Copyright 2010 CULTEC,Inc.All rights reserved. CULGOOE 06-10 1 s 1el`�d URRANGREEN`(`tir- 1 VortSentry° HS Guide 1 Operation, Design, Performance and Maintenance 1 w # � A 1 t, 1 �♦ nv� 1} A. vi •F i +i@k/ 4 ` e F . '„+. 11ryg ' t � �n F 1 i OW NTEW ENGINEERED SOLUTIONS � 1 ' VortSentry° HS Design Basics The VortSentry ITS is a compact, below grade stormwater There are two primary methods of sizing a VortSentry HS system. treatment system that employs helical flow technology to The Water Quality Flow Rate Method determines which model enhance gravitational separation of floating and settling size provides the desired removal efficiency at a given flow for pollutants from stormwater flows.With the ability to accept a a defined particle size.The summation process of the Rational wide range of pipe sizes,the VortSentry HS can treat and convey Rainfall Method is used when a specific removal efficiency of the flows from small to large sites. A unique internal bypass design net annual sediment load is required. ' means higher flows can be diverted without the use of external bypass structures.The VortSentry HS is also available in a grate Typically,VortSentry HS systems are designed to achieve an 80% inlet configuration,which is ideal for retrofit installations. annual solids load reduction based on lab generated performance curves for a particle gradation with an average particle size(d5o) ' Operation Overview of 240-microns(um). Low,frequently occurring storm flows are directed into the Water Quality Flow Rate Method treatment chamber through the primary inlet.The tangentially In many cases, regulations require that a specific flow rate, often ' oriented downward pipe induces a swirling motion in the referred to as the water quality design flow(WQQ), be treated. treatment chamber that Increases capture and containment This WQQ represents the peak flow rate from either an event abilities. Moderate storm flows are directed into the treatment with a specific recurrence interval (i.e.the six-month storm)or a chamber through the secondary inlet,which allows for capture water quality depth (i.e. 1/2-inch of rainfall). ' of floating trash and debris.The secondary inlet also provides for treatment of higher flows without significantly increasing the The VortSentry HS is designed to treat all flows up to the WQQ. velocity or turbulence in the treatment chamber.This allows for Due to its internal bypass weir configuration,flow rates in the ' a more quiescent separation environment. Settleable solids and treatment chamber only increase minimally once the WQQ is floating pollutants are captured and contained in the treatment surpassed. At influent rates higher than the WQQ,the flow chamber. partition will allow most flow exceeding the treatment flow rate to bypass the treatment chamber.This allows removal efficiency ' Flow exits the treatment chamber through the outlet flow to remain relatively constant in the treatment chamber and control,which manages the amount of flow that is treated and reduces the risk of washout during bypass flows regardless of helps maintain the helical flow patterns developed within the influent flow rates. treatment chamber. ' Treatment flow rates are defined as the rate at which the Flows exceeding the system's rated treatment flow are diverted VortSentry ITS will remove a specific gradation of sediment at away from the treatment chamber by the flow partition. Internal a specific removal efficiency.Therefore they are variable based ' diversion of high flows eliminates the need for external bypass on the gradation and removal efficiency specified by the design structures. During bypass, the head equalizing baffle applies head engineer and the unit size is scaled according to the project goal. on the outlet flow control to limit the flow through the treatment chamber.This helps prevent re-suspension of previously captured Rational Rainfall Method"" pollutants. Differences in local climate,topography and scale make every site hydraulically unique.The Rational Rainfall Method is a sizing program Contech uses to estimate a net annual sediment load a ---GRATE reduction for a particular VortSentry HS model based on site size,site runoff coefficient, regional rainfall intensity distribution, FRAME and anticipated pollutant characteristics. For more information GRATE INLET on the Rational Rainfall Method, See Vortechs Technical Bulletin 4:Modeling Long Term Load Reduction:The Rational Rainfall HEAD EQUALIZING FLOW PARTITION Method, available at www.ContechES.com/stormwater BAFFLE �`�' BAFFLE DO Treatment Flow Rate WQQ� PIPE INLETPIPE The outlet flow control is sized to allow the W to ass p y 1 z � ' i entire) through the treatment chamber at a water surface elevation SECONDARY INLET equal to the crest of the flow partition.The head equalizing baffle applies head on the outlet flow control to limit the flow 1 l through the treatment chamber when bypass occurs, thus ,I f PRIMARY INLET helping to prevent re-suspension or re-entrainment of previously ' OUTLETFLOw —'-- captured particles. CONTROL �I .' F Hydraulic Capacity - The VortSentry HS is available in three standard configurations: ' TREATMENT \ J —SEDIMENT SUMP inline(with inlet and outlet pipes at 1800 to each other), grated inlet, and a combination of grate and pipe inlets.All three configurations are available in 36-inch (900-mm)through `-'-------" 96-inch (2400-mm)diameter manholes. 2 The configuration of the system is determined by the suffix of the / a model name: Equation 1: + Diameter Prototype )27s e �Flow Rate Prototype \ Diameter Model Flow Rate Model • A model name without a suffix denotes a standard pipe inlet (Example.HS48). Equation 1 and actual laboratory test results were used to - • A"G" at the end of the model designation denotes a grate determine the flow rate which would be required for the various inlet(Example HS48G). VortSentry HS models to remove 80%of solids. • A "GP" at the end of the model designation denotes a View report at www.ContechES.com/stormwater combination of grate and pipe inlets(Example HS48GP). Performance Maintenance The VortSentry HS system should be inspected at regular Full-Scale Laboratory Test Results intervals and maintained when necessary to ensure optimum ' Laboratory testing of the VortSentry HIS was conducted performance.The rate at which the system collects pollutants using F-55 Silica, a commercially available sand product with will depend more heavily on site activities than the size of the an average particle size of 240-Nm(Table 1).This material unit, i.e., unstable soils or heavy winter sanding will cause the ' was metered into a model HS48 VortSentry HIS at an average treatment chamber to fill more quickly, but regular sweeping will concentration of between 250-mg/L and 300-mg/L at flow rates slow accumulation. ranging from 0.50-cfs to 1.5-cfs(14-Us to 56-Us). Inspection ' US StandardInspection is the key to effective maintenance and is easily MicronSieve Size ' % performed. Pollutant deposition and transport may vary from 30 600 99.7% year to year and regular inspections will help ensure that the ' 40i425�—��95.7%0_71 system is cleaned out at the appropriate time.At a minimum, 50 300 74.7% inspections should be performed twice per year(i.e. spring _70. _. _ � __212 33.7_/° and fall) however more frequent inspections may be necessary _ _ in equipment washtions may areas and d climates where winter 100 150 6.7% sanding operations may lead to rapid accumulations of a large 140- _ 706' 0,7°/q_�] volume of sediment. It is useful and often required as part of a Table 1 : US Silica F-55 Particle Size Distribution permit to keep a record of each inspection.A simple inspection ' and maintenance log form for doing so is available for download Removal efficiencies at each flow rate were calculated based on at www.ContechES.com/stormwater net sediment loads passing the influent and effluent sampling points. Results are illustrated in Figure 1. The VortSentry HS should be cleaned when the sediment has ' accumulated to a depth of two feet in the treatment chamber. Assuming that sediment in the inlet chamber is ideally mixed, This determination can be made by taking two measurements removal rates through the system will decay according to the with a stadia rod or similar measuring device;one measurement percentage of flow bypassed.This effect has been observed in from the manhole opening to the top of the sediment pile and the laboratory where the test system isdesignedto produce a the other from the manhole opening to the water surface. If the 100 difference between these measurements is less than the distance 00 • given in Table 2, the VortSentry HIS should be maintained to ' so • • ensure effective treatment. • Cleaning 0 ' E Cleaning of the VortSentry HS should be done during dry weather r so conditions when no flow is entering the system. Cleanout of the 101 VortSentry HIS with a vacuum truck is generally the most effective 0 T and convenient method of excavating pollutants from the o° as rta) torae7 1.sr4o 20t5e) system. Simply remove the manhole cover and insert the vacuum oa:ru:) hose into the sump.All pollutants can be removed from this one Figure 1: VortSentry HS Removal Efficiencies for 240-pm Particle access point from the surface with no requirements for Confined Gradation Space Entry. thoroughly mixed inlet stream.All VortSentry HIS models have In installations where the risk of petroleum spills is small, liquid the same aspect ratio regardless of system diameter(i.e. an contaminants may not accumulate as quickly as sediment. t increase in diameter results in a corresponding increase in depth). However, an oil or gasoline spill should be cleaned out Operating rates are expressed volumetrically. immediately. Motor oil and other hydrocarbons that accumulate on a more routine basis should be removed when an appreciable Removal efficiency at each operating rate is calculated according layer has been captured.To remove these pollutants, it may be ' to the average of volumetric and Froude scaling methods and is preferable to use adsorbent pads,which solidify the oils.These described by Equation 1. are usually much easier to remove from the unit individually,and less expensive to dispose than the oil/water emulsion that may be I ' 3 created by vacuuming the oily layer. Floating trash can be netted out if you wish to separate ' it from the other pollutants. Manhole covers should be securely seated following cleaning activities to prevent leakage of runoff into the system from above and also to ensure proper safety precautions. If anyone ' physically enters the unit, Confined Space Entry procedures need to be followed. Disposal of all material removed from the VortSentry HIS should be done is accordance with local regulations. In many locations, disposal of evacuated sediments may be handled in the same manner as disposal of sediments removed from catch basins Or deep sump manholes. Check your local regulations for specific requirements on disposal. Distance VortSentry HIS Between Water Sediment Oil Spill Diameter Model Surface and .p Storage of Storage p Note: To avoid underestimating the ' volume of sediment in the chamber, in. on ft. m yd m' gal. liter the measuring device must be carefully HS36 36 0.9 3.6 1.1 0.5 0.4 83 314 lowered to the top of the sediment pile. HS48 48 1.2 4.7 1.4 79 0.7 158 598 Finer,silty particles at the top of the pile HS60 60 1.5 6.0__I.8 1.5 1.1 258 978 may be more difficult to feel with the _ measuring stick.These finer particles H572 �rr '�72„1. tl4 7.1 J2.2 2.1 1 _.6 _372 _ 1409 typically offer less resistance to the end HS84 84 2.1 8.4 2.6 2.9 r 2.2 649 2458 of the rod than larger particles toward � • �.__-__ _- --- 3_3— - the bottom of the pile. H596 96 2.4 9.5~2.9 3.7 2.8 845 3199 Table 2:VortSentry HS Maintenance Indicators and Sediment Storage Capacities. Logon to www.ContechES.com/stormwater to download the VortSentry HS Inspection and Maintenance Log. '. For assistance with maintaining your VortSentry HS, contact us regarding the Contech Maintenance compliance certification program. aNas ¢t mous s haS.rprdes OwovNTECH® ENGINEERED SOLUTIONS 02014 CONTECH ENGINEERED SOLUTIONS,LLC. NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS AN EXPRESSED WARRANTY 800-338-1122 OR AN IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR —ContechESoom PURPOSE. SEE THE CONTECH STANDARD CONDITIONS OF SALE (VIEWABLE AT WWW CONTECHES COM/COS)FOR MORE INFORMATION. All Rights Reserved.Printed in the USA. ' Contech Engineered Solutions HC provides site solutions for the civil engineering induan,.Contech':connote Includes bridges,drainage,.aIn,se ch—mi tand earth smbilixntian products.For information on other Contech division offerings,Pair ContechES.com or call 800 338 1122 The product(:)described may be prateeed by one or mere of the following US patent: 5,322,629;51624,576; 5,707,527;5,759,415;5,788,848;5,985,15];6,027,639;6,350,3]4;6,406,218;6,641,120;6,511,595; ' 6,649,048;6,991,114;6,998,038;7,186,058;7,296,692;7,297,266; related foreign patents or other patents pending. The Stormwater Managemenf StarmEres,,MFS and CDS ore rraderni registered tradernaria,or licensed trademoAs of Contech Engineered Solutions LLC. LEED is a registered trademark of the VS.Green Building Council. Support • Drawings and specifications are available of comechstormwateccom. • Site-specific design support is available from our engineers. vshs manual M14PDFIN-HOUSE Existing Watershed Mao in -Alf" EM MASS. Hayes Engineering, Inc. Telephone: 781.246.2800 Civil Engineers & Zonal SurveyorsFocsimi/e: 781.246.7596 603 Salem Street www.ho.veseng.corn A�G Wakefie/d, MA 01880 Sco%: 1" = 60' O' 30' 60� 120' Apri/ 11, 2017 i a LM Nf�]M tTM � '3 AMA E2 1 E1 s rµ ® •...o"'I — _ — _�•�` . _ — — Ly1/,x'III � a?tom h a�� a D e �, Pro osed WGtershed UGP in SA Z EM MASS. Hayes Engineering, inc. Telephone: 781.246.2800 la i 1 Civi/ Engineers & Land SurveyorsFocsimi/e: 781.246.7596 603 So%m Street www.hcyeseng.con f _ �• \ 1� Wckefie/d, MA 01880 f �I Sco%.- 1 " = 60' 0' 30' 60' 120' April 11, 2017 nY y IJ z Y vo TT T F ,p C r 1� 1 CTT t �,, w a . f �• I I � — .ate y — — , P1 obi -- ". . ... ........... ............. .. • Q1 � IIIII 1 e STANDARD CATCH Prepared For: BASIN FRAME & A VORTSENTRY HS DESIGN NOTES GRATE (SET IN ADJUST TO GRADE FULL BED MORTAR) I W/BRICK & MORTAR VSHS RATED TREATMENT CAPACITY IS SHOWN IN THE TABLE BELOW,OR PER LOCAL REGULATIONS. MAXIMUM HYDRAULIC INTERNAL BYPASS 3-COURSES BRICK MIN. FLARED END CAPACITY VARIES. CONTACT YOUR CONTECH REPRESENTATIVE FOR ADITIONAL INFORMATION. 0 o Q SECTION UJ d. -4THE STANDARD SOLID COVER CONFIGURATION IS SHOWN. ALTERNATE CONFIGURATIONS ARE AVAILABLE AND ARE LISTED BELOW. 0 3 „ o ''.` OPTIONAL 6" OR rn 00,01 t2 0 A. 8" FLAT TOP ALUMINUMTROUGH CONFIGURATION OPTION DESCRIPTION � a c FINISHED • GRATE INLET(NO INLET PIPE) o 1-1/2" GRADE GRATE INLET WITH INLET PIPE U 3 WEARING nr .ur 'v y MORTAR JOINT A • + A CL c o COURSE ) , o:.. n # y 4'-0" (TYPICAL) ,.'. VORTSENTRY HS GENERAL INFORMATION Q F O N ELTI)MITGOUS CURS :a tO Typical Total e h w ' 7 PIPE CONNECTIONS FLOW Typical Typical Depth Approximate °:. L Total Distance Rim Rim Below Invert Minimum Maximum Pipe Prepared By: �•. NON-SHRINK GROUT Model Manhole Treatment to Outside Distance II'' IIII IIII ttff IIII Diameter Jr: 11 ll ll u A +l u u �• Flow Rate Bottom B C to Invert a: "SNOUT" OIL DEBRIS 1 ' FT mm CFS US FT m FT m FT mm FT In IN mm TRAP AND �` >•" FLOATABLES - SEE SITE PLAN FOR LENGTH • HS36 3 900 0.55 15.8 10.16 3.10 4.08 1.24 5.58 1702 3.00 0.91 18 450 co E '.. SEPARATOR AS BAFFLE ° HEAD EQ BAFFLE -E 6 Qo N � m 'A d MANUFACTURED BY PLAN '. • HS48 4 '1200 1.20 34.0 13.25 4.04 6.00 1.83 6.75 2057 4.00 1.22 24 600 m.. � � � o BEST MANAGEMENT A W .v: Ln F ROp PLAN VIEW B-B HS60 5 1500 2.20 62.3 15.13 4.61 6.50 1.98 7.96 2426 4.82 1.47 30 750 E a N N N PRODUCTS OR //V/ a d. p APPROVED EQUAL c� hF HS72 6 1800 3.70 104.8 16.56 5.05 6.75 2.06 9.15 2788 5.59 1.70 36 900 W 6 ° m 00 = O LEVEL SOLID COVER OR m °' PRECAST OF EDGE---\ GRATE INLET ADJUST TO GRADE HS84 7 2100 5.60 158.6 18.85 5.75 7.75 2.36 10.35 3156 5.00 1.52 42 1050 m o m t '3 CONCRETE W/BRICK & MORTAR = m 3 n EXISTIN CONTRACTOR TO GROUT TO 3 COURSES MINIMUM HS96 8 2400 8.10 229.4 20.87 6.36 8.50 2.59 11.54 3518 6.91 2.11 48 1200 - L ; 5" GRADEG FINISHED GRADE P i0 v.:•:;a.' c.'::a,�v.:•:a;:v. • .:�:' FLARED END A'q>11\`�„' CIFIC 6" MINSH sEcrloN " DATA REQUTE IREMENTS CRUSHED STONE '" '� ' ! • PRE-CAST CATCH BASIN RIP RAP SHALL HAVE A d50=12" O STRUCTUREID NOT TO SCALE AND SHALL BE 18" SECTION A-A PEAK FLOW RATE(CFS)WATER QUALITY FLOW Seal:(CFS) THICK Seal: NOTES: B t• + B e o CONTECH o RETURN PERIOD OF PEAK FLOW(YRS) `�H OF`Mgs9c 1. CONCRETE: 4,000 PSI MINIMUM AFTER 28 DAYS. PIPE DATA: I.E. MATERIAL DIAMETER QP S CAPE COD CURB 2. REINFORCED STEEL CONFORMS TO LATEST ASTM A185 SPEC. 0.12 SQ. IN./LINEAL FT. LEVEL SPREADER INLET PIPE OUTLET PIPE = PETERJ y NOT TO SCALE AND 0.12 SQ. IN. (BOTH WAYS) BASE BOTTOM. NOT TO SCALE (OXX^MAX) (OXX"MAX) INLET PIPE 1 OG EN Z 3. H-20 DESIGN LOADING PER AASHTO HS-20-44; ASTM C478 SPEC FOR "PRECAST o a OUTLET PIPE J aVIL y REINFORCED CONCRETE MANHOLE SECTIONS." 9 No.27145 0 RIM ELEVATION .o FV•7STEP� 10' ANTI-FLOTATION BALLAST WIDTH HEIGHT AL ol C TER STONE LEVEL At Ep TO CeNTER TRENCH GRADE PROPOSED SWMA f ELEVATION EL A NOTES/SPECIAL REQUIREMENTS: 41ZAl'� 1"x1"x36" FLAT STONES TOP OF BERM '' FRAME AND COVER FRAME AND GRATE �1 HARDWOOD STAKE FOR WALL-LIKE ELEVATION=94.6 (DIAMETER VARIES) (24" SQUARE) 'PER ENGINEER OF RECORD CONFIGURATION 3 2 1.5 N.T.S. N.T.S. GENERAL NOTES 1. CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE. • H ARE REFERENCE DIMENSIONS. ACTUAL DIMENSIONS MAY VARY. Design By: NO MARKED WITH 2. DIMENSIONS R 1 �� •. C STRUCTURE DIMENSIONS AND WEIGHT PLEASE CONTACTYOUR FABRICATION DRAWINGS WITH DETAILED S C EBL WOVEN WIRE FENCE � 3. FOR FABRIC Drawn By: 3' ° ' CONTECH ENGINEERED SOLUTIONS LLC REPRESENTATIVE. www.ContechES.com (6"x6"x14.5 GA.) N NO UNDER NON-WOVEN H 4. VORTSENTRY HS WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION Checked By: NO FILTER FABRIC fLO r - MIN. 1/4 TON CONTAINED IN THIS DRAWING. Project File: SAL-0042A 1 _ BOULDERS 5. STRUCTURE SHALL MEET AASHTO HS20 AND CASTINGS SHALL MEET AASHTO M306 LOAD RATING,ASSUMING GROUNDWATER ELEVATION AT,OR BELOW,THE OUTLET PIPE INVERT ELEVATION. ENGINEER OF RECORD TO Comp. No: SAL24 WOVEN WIRE FENCE AUXILIARY f LOW 1 SECTION •a CONFIRM ACTUAL GROUNDWATER ELEVATION. ❑Issued For Permit RIPRAP SHALL INSTALLATION NOTES ®Issued For Review NON-WOVEN FILTER FABRIC 2' MIN OF COMPACTED HAVE A d " ' a r` " 1. ANY SUB-BASE,BACKFILL DEPTH,AND/OR ANTI-FLOTATION PROVISIONS ARE SITE-SPECIFIC DESIGN CONSIDERATIONS (MIN) 5o=8 ❑Issued For Bid SELECT GRAVEL OR 4" - PROPOSED AND SHALL BE 12" ,` AND SHALL BE SPECIFIED BY ENGINEER OF RECORD. 12" COMPOST SOCK MINUS CRUSHED ROCK - GRADE THICK O^ 2. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE ❑Issued For Construction (SECURE WITH - - TOP OF BERM VORTSENTRY HS MANHOLE STRUCTURE(LIFTING CLUTCHES PROVIDED). Z 3. CONTRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL STRUCTURE SECTIONS AND ASSEMBLE STRUCTURE. ®Not For Construction 1%1"x36" HARDWOOD 2 EXISTING - ELEVATION=94.6 SECTION A-A 4. CONTRACTOR TO PROVIDE,INSTALL,AND GROUT PIPES. MATCH PIPE INVERTS WITH ELEVATIONS SHOWN. STAKE 6' O.C.) t GROUND 5. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO ASSURE UNIT IS WATER TIGHT, HOLDING WATER TO FLOWLINE n 0 10' INVERT MINIMUM. IT IS SUGGESTED THAT ALL JOINTS BELOW PIPE INVERTS ARE GROUTED. o F=_ UNDISTURBED \I/ N „ GROUND FILTER FABRIC EXISTING SOIL ��ll z STONE LEVEL AT INFER C TO BE SUITABLE - - - \ o MATERIAL AND ELEVATION=94.1 STABLE '.. BASE BOULDERS TOED . .. - . . .. . . . ..- ao. . , ` s .-" a tl °,.a, 9325 Centre Pointe Tyr,Suite 400, Nest Chester,CH 45969 r err e_ am creo v ,cnn rE nm EMBED FILTER FABRIC 6" INTO EXISTING GROUND _ _ _ MIN. INTO GROUND 800-338-1122 513-645-%W0 513 845-7997 FAX (OR PLACE SAND ON FLAP i iti AT GROUND SURFACE) 1 .5: 1 RIPRAP SLOPE SILT FENCE NOT To SCALE 16' NOT TO SCALE NOTES: ELEVATION CULTEC NO,20L POLYETHYLENE LINER t o NOTES: 1. AREAS TO BE PROTECTED BY REVETMENT SHALL BE FREE OF BRUSH, TREES, STUMPS & OTHER 4 OZ. NON-WOVEN FILTER FABRIC HVLV FC 24 _ 1-2 INCH DIA TO BE PLACED BENEATH ORGANIC MATERIAL & BE DRESSED TO A SMOOTH SURFACE. ALL SOFT OR SPONGY MATERIAL SHALL BE - AROUND STONE. TOP AND SIDES FEED CONNECTOR WASHED HVLV FC-24 FEED CONNECTORS 3 1. COMPOST SOCK OR DOUBLE STAKED STRAW HAYBALE TO BE PLACED IN FRONT OF REMOVED TO THE DEPTH SHOWN ON THE PLANS OR AS DIRECTED BY THE ENGINEER & REPLACED WITH O SILT FENCE. WOVEN WIRE FENCE (6"X6"X14.5 GA.) UNDER NON-WOVEN FILTER APPROVED MATERIALS. MANDATORY. WHERE SPECIFIED CRUSHED WHEN UTILIZING Cultec Inspection Cover FABRIC TO BE USED AT ALL WETLAND CROSSINGS AND ALL AREAS WITHIN 25' OF 2. THE STONES SHALL BE PLACED UPON AN APPROVED BED TO LINES & GRADES SHOWN ON PLAN. EACH PAVEMENT r STONE INTERNAL MANIFOLD - Cast Iron Frame STONE SHALL BE CAREFULLY. PLACED BY HAND OR MACHINE, ON A PREPARED BED NORMAL TO THE SPILLWAY RECHARGER 280HD )/ 95%COMPACTED FILL 8.00 THE WETLAND LINE. ALL OTHER LOCATIONS THE -FILTER FABRIC TO BE UV RESISTANT SLOPE AND FIRMLY BEDDED THEREON THE LARGE STONES SHALL BE PLACED CLOSELY TOGETHER & NOT TO SCALE / 6" MIPT DR35 With POLYPROPYLENE WITH A MINIMUM WEIGHT OF 2.5 OZ./SY. THE INTERVENING SPACES FILLED WITH SMALLER STONES IN SUCH A MANNER THAT THE ENTIRE HEAVY DUTY CHAMBER ( _ Pavement 6" F/A DR35 2. USE MULTIPLE ROWS OF SILT FENCE FOR LONG STEEP SLOPES IF NECESSARY. SURFACE WILL FORM A COMPACT MASS. ._.._,. .._. .. .,. ... .. -.,. . ri a 'g � r Y rte"• .•J':.. _..•..a "3 ti -~ Ci. -,5 �� • e �,'..' ' lx i •afw'•+s'1y, -;r"� ./y:.:.gvi\: "�' .•vri .L; 1.'::7a{o'.`• .�;A:-�'..: S:A�.^:a:+ ;`;INIi�Ur11. ; 1"ARIN _, ACE A)?E1l RC1NCRfE HKUSTrL CK1..' �. ... :.• ., . ,_,:• ...., 14.0 MIN. : .. .r.• ;:• •.. .. '•: :•.': :.. . =•z... .. . LOAM PAVED "` " ' LOAM PAVEDfff11? AREA AREA PIPE SIZE 90' BEND 45' BEND 22.5' BEND TEES,PLUGS,CAPS & HYDRANTS AREA AREA 6.0" 6" Internal 6" PVC Pipe Riser (in.) (s.f.) (s.f.) (s.f.) (s.f.) s 8 5 3 a Coupling 88 SCH40 or DR35 8 12 8 5 6 Broken Stone 0 8 0o Inspection Port m m ro M N - z° GRAVEL GRAVEL 10 19 13 7 9 4" COMPACTED BASE 12 26 18 10 13 4" COMPACTED BASE 26.5 - - - LOAM & SEED LOAM & SEED o o e e e e o 0 0 o e e • o o e o e o 0 0 0 0 0 0 6.0" 0 0 0 0 0 0 0 o e e e o r UNDISTURBED ¢ : .: v : v V. V. " SUITABLE BACKFILL SEE NOTE 2 a .. EARTH ' ''°' '''' v'' ?' SUITABLE BACKFILL SEE NOTE 2 12.0 N p t0.e. ': ? :fie•? V, ?`.V ° N COMPACTED AS o : : COMPACTED AS o 1- SPECIFIED I ROADWAY BACKFILL v'iv. .: V v., SPECIFIED I ROADWAY BACKFILL Z ° SHALL CONFORM c iv. .: V. °'`° X SHALL CONFORM 47.0" 52.0" 'IJ 04 TO STANDARD SPECS. .o:j y TO STANDARD SPECS. CULTEC INSPECTION PORT CONCRETE '. ".. ' NOT TO SCALE f` o SAND CUSHION THRUST BLOCK SAND CUSHION v TYPICAL GENERAL NOTES ALL RECHARGER 28OHD HEAVY DUTY UNITS ARE MARKED WITH A WATER MAIN (SIZE VARIES) PLAN - HORIZONTAL BENDS. TEES AND PLUGS DRAIN (SIZE VARIES) RECHARGER 28OHD BY CULTEC,INC.OF BROOKFIELD,CT. COLOR STRIPE FORMED INTO THE PART ALONG THE LENGTH OF STORAGE PROVIDED=9.2 CF/FT PER DESIGN UNIT. THE CHAMBER. N REFER TO CULTEC,INC. CURRENT RECOMMENDED ALL RECHARGER 28OHD CHAMBERS MUST BE INSTALLED IN Q g ...-. . ."' INSTALLATION GUIDELINES. ACCORDANCE WITH ALL APPLICABLE LOCAL,STATE AND - : USE RECHARGER 28OHD HEAVY DUTY FOR TRAFFIC AND/OR H-25 FEDERAL REGULATIONS. :'.'.'.:. .. WATER MAIN APPLICATIONS. ' V. °: .. o. . . .... . . . . . . .. .. .......... . LEDGE LEDGE v o-. :co.'.'.'.'.'.'.' �....... .. .. CRUSHED STONE OR d:i y ;.'. i o ;. . CRUSHED STONE OR CULTEC R-280HD SECTION UNDISTURBED SCREENED GRAVEL :' v.?:a: c.':. UNDISTURBED J SCREENED GRAVEL SOIL BEDDING FOR FULL WIDTH v v •: v.: v Drawing Title: ....... ........ .. CONCRETE v':.:?°.a ::. SOIL BEDDING FOR FULL WIDTH NOT TO SCALE OF THE TRENCH UP TO " THRUST BLOCK �'o'' ? "' OF THE TRENCH UP TO „ 3'-0" OR D+2' SPRING LINE OF PIPE 6 (TYPICAL) ° `'° '' '° - UNDISTURBED 3'-0" OR 0+2' SPRING LINE OF PIPE 6 WHICHEVER IS GREATER BELOW PIPE IN EARTH OR EARTH WHICHEVER IS GREATER BELOW PIPE IN EARTH OR 12" BELOW PIPE .IN LEDGE ANCHOR ROD J 12" BELOW PIPE IN LEDGE Z WATER TRENCH ELEVATION - VERTICAL BENDS DRAIN TRENCH O NOT TO SCALE THRUST BLOCK NOT TO SCALE 1-- NOTES: NOT TO SCALE NOTES / /fie 1. ALL MATERIAL SHALL CONFORM TO CITY/TOWN OF DEPARTMENT OF PUBLIC WORKS. NOTES: 1. ALL MATERIAL SHALL CONFORM TO CITY/TOWN OF DEPARTMENT OF PUBLIC WORKS. Q V ! 2. NEW ROADWAY CONSTRUCTION SHALL CONFORM TO CITY/TOWN SPECIFICATIONS. 1. THRUST BLOCKS TO BE 3000 PSI CONCRETE PLACED AGAINST UNDISTURBED MATERIAL. KEEP CONCRETE 2. NEW ROADWAY CONSTRUCTION SHALL CONFORM TO CITY/TOWN SPECIFICATIONS. / /1 3. IN LIEU OF THE 12" GRAVEL COURSE AND 9" OF CRUSHED GRAVEL, 18" OF CRUSHED GRAVEL OR CLEAR OF MECHANICAL JOINTS. 3. IN LIEU OF THE 12" GRAVEL COURSE AND 9" OF CRUSHED GRAVEL, 18" OF CRUSHED GRAVEL OR V J RECLAIMED STABILIZED BASE MAY BE USED AS A BASE FOR THE PAVEMENT REPAIR. 2. STONE BACKING MAY BE SUBSTITUTED FOR CONCRLTE THRUST BLOCKS PROVIDED THE STONE(S) ARE OF RECLAIMED STABILIZED BASE MAY BE USED AS A, BASE FOR THE PAVEMENT REPAIR. -Q 4. MATERIAL SHALL BE REPLACED IN KIND WHENEVER POSSIBLE. EQUAL SIZE AND BEAR ON UNDISTURBED EARTH. 4. MATERIAL SHALL BE REPLACED IN KIND WHENEVER POSSIBLE. 5. A MINIMUM 2' CUTBACK IS REQUIRED AT THE TOP OF THE TRENCH WALL OVER UNDISTURBED MATERIAL 3. USE OF JOINT RESTRAINT SYSTEMS SHALL NOT ELIMINATE THRUST BLOCK REQUIREMENTS (WHERE POSSIBLE). 5. A MINIMUM 2' CUTBACK IS REQUIRED AT THE TOP OF THE TRENCH WALL OVER UNDISTURBED MATERIAL, W V / V =^ I_- O U_J Cif Z Q U U J W LLI It� a ~ Q ryW a M N T a CURRENT OWNERSHIP: Drawing No.: iKAK REALTY TRUST r PARCEL ID: 07-0078-0 D ET PARCEL ID: 07-0079-0 & T J J SHEET 4 OF 4 i= y n -- - -- i Prepared For: irr�tu x 94.18 1 ` \ \ ZONING TABLE J EL GEND TREE LEGEND \ l \ \'moo BPD (BUSINESS PARK 0 scc l \ \ ( \ _ ,� ZONE DEVELOPMENT) 3 SLOPED GRANITE CURB M - MAPLE \ I I _ N EDGE OF PAVEMENT - - - -EP- - - - WB - WHITE BIRCH \ \ \ \ \ B DIMENSIONAL CONTROLS REQUIRED/ALLOWED EXISTING PROPOSED '� o 0 CCB P PINE 116 FRONT YARD SETBACK 50 ft. 73.4± ft. 52.6± ft. o = M cQ CAPE COD BERM 95.58 \ \ \ \ oJ '\\ \ 1 _ \ \ SIDE YARD SETBACK 30 ft. 50.0± ft. 50.0± ft. 3 F B.V.W. T - UNKNOWN TYPE 100' BUFFER ZONE - - \ \\ \ REAR YARD SETBACK 50 ft. 50.0± ft. 50.0± ft. a - c o \ \ \ 1 1 \\ 114 , \ \ MIN. FRONTAGE 150 ft. 413.46 ft. 413.46 ft. Q ~ N MIN. LOT WIDTH 150 ft. 518.69 ft. 518.69 ft. APPROXIMATE WATER LINE W /� /o \ Prepared By: .Jd�F,�'1B. W 17 1 I PAINTED GAS LINE G PROP f94.59k 9 3 0 ' / + C --�?? l I MIN. LOT AREA 40,000 S.F. 739,245 S.F. 739,245 S.F. j RE7, W MAX. BUILDING HEIGHT 50 ft. 20± ft. 201 ft. 102.2` o , 04. CCB r10 I A 1 PAINTED ELECTRIC LINE E WFI16 -- I �o ` 17/0 `--- I MAX. LOT COVERAGE (bldgs.) 45% 7.0% 10.6% EX/STING CONTOUR -too- - 93.18 J \` L` �,J- �; LEDGE CUTORMIN. OPEN SPACE (bldgs./paving) 10% 88.1% 83.0% SEWER MANHOLE ® 4• INv.-96.0 ,iif \ _ _ I I�I IVP RAP SLOPE PARKING CALCULATIONS T CATCH BASIN ® L�VEL�S READ SrONEe \ , I °� ¢ "T o 0 4 9 SPACES I I CALCULATION REQUIRED/ALLOWED PROPOSED EXISTING m E �a N N T SP -Y 00 00 DRAIN MANHOLE ® NPORTFCDON / / • 'os ` \ I I I II i space/company vehicle 1 spaces m o ro r n LIGHT POLE ) • ' \ o o I I I I x ELECTRIC MANHOLE C, 3 0 24-CULTEC R-28OHD 93.62 \ \ III i 1 space/2 Employees (300 People) 150 spaces TELEPHONE MANHOLE 8® KIN. FINISH GRADE-101,7 WF,�'15 I `' � \ w I I I TOP STONE-100.7 r, o 1 space/1,000 s.f. of Building minus Storage & Office TOP CHAMBER 100.20 \ ( � ( 45 spaces SIGN BOTTOM CHAMBER-98.0 I 1 (44,376 s.f.) I -A TTOM ONE- WATER GATE 8W INLET NV.-99.'S S • o 4 00 I ! FIRE HYDRANT 4. OUTLET INV.-99.PROPOSED I \ 1 n �� \ \\j�, II TOTAL SPACES 196 spaces 137 spaces 95 spaces It ; MANHOLE ® PROP. CO RIP RAP I V) / _ _ \\ �r ( 2M 101.8 Seal: WFI14 • / \ \ \ I \ BOLLARD 93.72 0 • o va __, 6; U \\ I\ wF/73 \� / / • a \ \ �� CURRENT OWNERSHIP. PETERJSSEX/STING SPOT ELEVATIONx 100.2592.72 N \ /if'� ` �� \ OGREN\ \ KAK REALTY TRUST �g 8 \ .� i-- �� Na 27145 y - BORDERING WF/17 _ __ - \ \\� /� \\\ /-� ��\�� 9 aPROPOSED EROSION CONTROL • wF/10 vEGErnrfO WF/11 91,40 01.3; 102.4` ;102_.3, _ / Gs � �� ``�. PARCEL ID: 07-0079-0 & PsPROPOSED CONTOUR --- 102 --- 9146 WETLAND -+�� x 99.WF/9 Wn,' �� 91.52 1 $ PAINTED 6" GAS - 102,25 � \`��\ PARCEL 10: 07-0078-0/ 12"H S=3.9X GG \�\\PROPOSED CAPE COD BERM CCB 91.36 / 9 911PROP. CB's g1t gy FAFARO� RIM-100.50 s� Iw A P N W 1 � 10&\\\\\\oc L111n PROPOSED SPOT ELEVATION ;102. ` 1-96. - - - \\\ i OCB 12 12 TER LI �.� 1 ry CBS � WFZ8 / PROP. BLOCK W.G. EL.=95.41 9 1 " W , t? G►� ,0 - _ 1✓ B�\� 90.79 (\p�9i 22 5 RET. WALL TOP NUT SPACES 0 / S, RCp PROP CB RIM= 02.69 PROPOSED 25 sip W EL.=92.92 W.G. EL.=95.58 CB2 W �s� TRAN GEAR A` 12- 1=93.34( ) ACE$ \ WF/I \ / CONNECT W W / ; t2�RNCPi PM T9036 5W(WH) PAVEMENT 06 �\ O Design By: PJO / 7 EL=93.08 W I - \ / 93.85 / / �� :' // S SMH EXISTING WATER ET P NUT I �t / R-102.28 PAVDADUSTIEW \�\ Drawn 8y: EBL �\ \ Checked By: PJO 9464 9oF a \+e%// eR 1990 68 CC8 / _ 12. 1 95.6 RIP 03B 70 RAN \\ \ Project File: SAL-0042A r� 9, - 0 I / 120HDPE DMH RIM=99.37 ��\\\ 3" RCP PROPOSED /�(�/ / �/ X11 ST X101:4- 01.0 10 \ 102.2 S 2 1-99.0 SOC TO \ IZ"RCP 1=94.47 (CB WEST \\\ Comp. No: SAL24 / p� / S 12 RCP 1-94.17 (CB EAST) c ❑Issued For Permit WF/3 RIP RAP18" P 1=88.92 0.69 PROPOSED TEE SLOPE / 96 H ' r 8" kdUrmPROP. 01. - t AL1 -- E 24"RCP 1=88.67 \ �2 ®Issued For Review W/3 GATEs =66.28 4� / _.-- -- -- 250.8 a,la-loo.f " 5 _ o - v --�_ E �0 �\ \\ \ WF/4 µF!16 8" i=90.18 S } R=101.38 %GSI` 2' I-x'.26 p>� , n n ,o T s, \ \ ❑Issued For Bid \\ 91.53 ADJUST \- \ Q SW(TCH-GEAR TO � v I 3 Ia] PARKING 1 c $ \ • W15 R-100 2 / - RELOCATE - v \\\\\ []Issued For Construction \ RIF RAP ; RIP R7P \ j �2 RIMS-101 45 "� II -� �� R!P _,�� CB V �� / a_ 1 1-914 o V1101 �RRM=98T76ti� 9 \ � ®Not For Construction ROOFTOP DETENTION CJW END / /�� _ 2-3' VERTICAL OPENINGS � ° � TR� TO �* 7? \ S=L Y N \ p \c \\\\\� o p "E 704 2Z fp I f IADDITION ; w ,s96, ADDITION - + '9" \ +5� I/ (27,470 S. '.) i I �� _ J °_'-� 1 19.8' WF A \ 92 \ =3S2f' 'f 22 SPACES "� �` D jJ�1H RIM=99.99 9 SPACE HP SPACES \ I c� s \ WF,/A7 8 93 90 \ \\ - 8'l=89.4 ,p'/ ADING DO 14^ _�� " 1 \ 88.81 \ P t� , get p 12 RCP 1-93.34 I y \ �I I c \ \ :m 100' BUFFER TO BVW�- 8"RCP' --:p1lE 1 TMO99 C 18-RCP 36" RCP_ \\ RIM-PROPC8 -� _ . _ . _._ - - . . _ - J _i' -� 10 o fi 'oma\ two r�PS 18 DJUST 1�90.04(DkN) C6 iRiM=99.46 - - w ` R-101.71 2"RCP i=94.%6 I=89.20 \ ' 12NDPE P-95.0_ " - WF/(A4 _� c G 12 s' -- C`CB CCB QP flf3�dn197.0 u 10' WIDE STONE eb�a �` WF� -- CCD - rs SPILLWAY O ti r \ - - c g � C5 RIM=97.'3 \ [[��[[11��r�ff�� TRANSFORMER TID WF/A3 0 4CP I1-92.23 4 J C ! RTP RAP a o_ PIP RAP TRANSFORMER- 10,03 _ 4d'„'iw� Y \ y 0 ��`/ RIP P --- - -- - K RELOGITED U 31 ,5' o d 88.39 / _ .. CONC. � ,�� ,� . . , �� • ,: .: , . � � . �� ,�; .��.��,�.��,�•,�� .�� . •. � �� < . ,�� .�� ', � ��s• tp GATE G� 4"HDPE I-9 •H REMOVE CB ELECTRIC SIGN IQ O \ o POST \ SGC ` 20 FOREBOWI ,q TO . METER - DO NOT ENTER m p p EMH W/8 WIDE B8 3.0 / LINED W y1p I I EXISTING WATER CONNECT 10 ROOF LEADER TO o TREES TO BE REMOVED o 0 �o R=1 15 N1E0 G STONE LEVEL / BOTTOM-93.0 I NEW 10• DUCTILE IRON - TOP BANK-94.8 I II N CO C. PROPOSED % E E �G1R1 1 aaarrr�� I PLANTING o �, I EP 10' WIDE SPILLWAY O 94.1 FF=101.71 �� 89,09 x I 12•RCP I-93.00(0 I I ROOF OF NEW ADDITION ROOF OF NEW ADDITION 2 J � - x SIGN o 4-HDPE I-93.00(out) I I / USED FOR STORMWATER USED FOR STORMWATER NO TRESPASSING" I I I I I DETENTION WRH 2-2• DETENTION WITH 1-2" ¢ A \ o o> oo n o n v n cN 0 I a I OUTLET PIPES. OUTLET PIPE. LOTS 725, 729, R,� �, TMH 741, 744, & 745 \ S o R=106.77 TOTAL AREA _ 739,245 S.F. aROME = I o 8.421 I 16.971 ACRES EXISTING BUILDING to O 1 TECHNOLOGY WAY I \ O MIS =105.83 0 y I e m \ N x ��\ \ o 0 0 _ \ 0 30.0 � G U � 1700 SG U1 a ° \ I ` T I \ o 0 0 i FF=101.75 0 1 I 16• I S;GNS I a 'VISITOR I n FIRE PARKING" n CONNECTION STONE & 'poll Drawing Title: h U MASONRYGt \ LRET WALL \\ \ `4179 I C t c1 W RIP RAP \ \�P_RAP\ RIP RAP RIP RAP RIP RAP 0 0 C 2 a W \ Z o ^ N I I I I CCB CCB CCB n � 1 O \ L O CCB I I SMH R=97.47 �i0 I - - ' - - - _ EXIST. 8" h ° IW I Q 8"I=88.83 $ a"c.L.o% wATt-R _ _ C.L_D.I WATER_ . - . - . - . - . - . - . - . - . - . - . - . \'�� (J / CCB � SMH R=100.27 I I Z / ► ( I> 8%=88.12 # S ° o � � � � O 7 Fp V C RIM=99.78 W � z 9 SPACES I O `f W Ld v I SIGN c� n I SHIPPING & O n RECEIVING' cc NOTES: y ° ^ L � V) 6 SPACES I V ) � Z#z FOR LOT INFORMATION SEE A PLAN BY HAYES ENGINEERING, INC. ENTITLED "ROADWAY cn W �!� ABANDONMENT AND LAYOUT SUBDIVISION PLAN OF LAND" DATED MARCH 6, 2014 REVISED APRIL L - - CCB SIGN !GN 9 = _ 15, 2014. y I "THERMAL CIRCUIT" NO TRESPASSING- TOPOGRAPHIC RESPASSING" / H PERFORMEDiJANU JANUARY 2017 THROUGH MARCH GROUND SURVEY BY HAVES ENGINEERING 17. S I I N BORDERING VEGETATED WETLANDS BY HAYES ENGINEERING, INC. FLAGGED ON JANUARY 30, 2017 Drawing No.: o AND MARCH 21, 2017. C - DATUM IS NGVD29. � 5 SPACES O SMH =96.22 a EXISTING DRAIN PIPES TO BE REUSED SHALL BE VIDEO INSPECTED AND CLEANED IF NECESSARY \ $ ® ® ® S P \mss 0 d SHEET 3 OF 4 a Prepared For: U LEGEND TREE LEGEND J WFI201 I ` SGC ° a x I 1 _ r SLOPED GRANITE CURB M - MAPLE N 000 94,18 I 1 \ ii5�j6.13 '0\118.05 x19,91 x 121.69 EP --- WB - WHITE BIRCH N T� ��n EDGE OF PAVEMENT l x 10\2y� x 114.38 x 119. ?o - -- -CCB + Q 0 \ r \ CAPE COD BERM P - PINE C ova ( �8 \ 915.63II3,9Z- \ \ \ B.V.W. T - UNKNOWN TYPE WFIIY\ \ \ \YY�,''' � \ `x2`4 116 115,9\ 100' BUFFER ZONE - - Q F o N 95.5811 \ \ Op x 11961i ��nn x 115.03 x 119.07 oJ \ \ � APPROXIMATE WATER UNE W x�J \x T3,70 \ \ \9 \ \ '�V\ \ \\ - x 119,60 -_ \ Prepared By: \ 1 3 2 \ \ PAINTED GAS LINE G \ 1 \\ \\ 114,01 114 \ \ I / 12.22- -� \ \ PAINTED ELECTRIC LINE E .IYFjr18. )if 97,27/ f x 194.59x33 I I r / / 07.4 \ IX/SANG CONTOUR -100- - 6 j a N x 103. 110.14 \moi o x 0 \ ?\ x 112.43 1 x 117,10 SEWER MANHOLE Os m cs,00 0 (0 0 t wFlie93 6 3.73 / 97.79 1 l l I �0 \ ''o\ i CATCH BASIN ® 0, o � 01 a S; in 2 -93,82 / / / �Q�; J 107,67 'oo \ \ I I I DRAIN MANHOLE ® co _6 ( C� 1 � (ca n a � L \ y '\ LIGHT POLE co / co 98J9 J ' 0/ x 1BZ68 x 109,07\ ' I LEVairt 311 = ( 3 a � / / \ x 106,92 \ 1 \ I ELECTRIC MANHOLE ® �, 105.38 'Os \ \ x 0.79 ` i 115.91 TELEPHONE MANHOLE 8 WFI15 x 96. 8 / � 02.54 \ \ \ \x 1 2,67 SIGN I x 100,78 \ � 93.62 I \ \ \ x ib9. 0 WATER GAT£ I x 104.61 107.91 \ I \ 100,26 �\ \ \ ` x 117.40 FIRE HYDRANT \ x 109,V\ �106.6a /\ 1 ` MANHOLE ® Seal: I x 991 1 \ \ x 104 83 - x 102,17 y / \ I �, BOLLARD �f ,�N OF M,4s \ / -� \ �x 107,12 109�J28 �Ep a+c x 9 ,61 I o x 3.05 / 0,34 x \ \ 107,32�9.Sg 112.65 EX/ST/NG SPOT EILEVA71ON x 100.25 i PETER J. yG� x 99.85 N i 100.09 93\ 9. 0 o y / \\ \ x 1050 107.40 \ ., #33604 WF 14 / /' W 5 \ \ 106.38 \ 117.78 x,119,89 Pv 9 93,72 / '0 / �( \ - �I V 115,61 ��% x� \\ WF 13 / / 0\ / /` 91 101.18 \ \ \ I � a�6 130.34 SUFN 92.72 \\ \ I l ��1 9'3X08. �\ C �� / x /5 x 99.10 x 99,37 0099.73 \ to1,87 x 105,605,93\\�/� �'°� �1\� ` 7 CURRENT OWNERSHIP: sv BORDERING { 94 x 98.86 \ / \ 1 \\� *106, \ \` �/ \ ZA WF 10 WF�1I WF f2 \ \ �\ f %�� `\\x\132,05 �\ >>" VEGETATED 91,40 x 93 /� � � 101,72 --j = to o 107.97 \\� KAK REALTY TRUST 91,46 WETLAND 91.52 -kms 1 CB RIM=99.77 I ` \ " _ / x 7,64 PAINTED 6" GAGS' G X3,37 x\103,7 106.91 1:06.60 107,10 \\\��\\ PARCEL ID: 07-0079-0 & - 11' CP /=93.97 > \\\ 132 Ol WF19 x 93.96 G rio�6G '-"0`N x 106.07 1109.2 \�\\2. PARCEL ID: 07-0078-0 91.36 �/ x 94.00 gam 9a.1E 1 gY FAFARO \ w 09,78 \ \\ foo -/ x�J409- X423 x 9 . 2 la A P N W \ I ^�\�\\�O� Design By: PJO W LI OM >F - --- aa--- --x--__ \\ L °e�Q\\\:FOG x 94.60 ' " TER ry 102.98 EP -_ _ _ 106,16 Drawn By: EBL / W.G. EL.=95.41 g6 x 96.73 1 IN W 't 0 0 104.76 W X 95.20 Sa%Pn 1 CB RIM-10269 _ G x 10�.73�\\\'\\\\\�\\ 33.30 Checked 8y: PJO X 94,76 TOP NUT \gym 90.79 W.G. EL.- 95.58 O, 106.04 � \� / EL=92.92 X 82 W ( G1 12 RCP /=93.34( ) ° \ j 1 x 96, 1 w EL=93.08 w 6!� x 99.5 \ 8 12 RCP /=936 H 00 1\a Project file: SAL-0042A x 99.65 _ (� ) x 105.23WfI \\\\�( 132.08 Com No: SAL24 TOP-NUT / \ x 10 4 _ 0\� Issued For Permit 93.85 WF,/7 / / / S SMH El _ _� 0 I $ 6\ \\ ❑ iYF�2 97.29.W46 _ R=96.43 I x 106,39 106,60\ 10639109.6 Issued For Review 90.54 gti / 8" 1=90.68 -/ �� I 0/ I \ \ DMH RIM=99.37 \ l 131.26 360 89.83 �j A� I 97,45>( J x 98,99 10 I ' 99 69 EP S 104,69 \ 12RCP 1=94.47 (CB WEST) \\ _ \� \� []Issued For Bid 9 X 96.84 100,71 l Y� - 3.97 \42-Z \ WFI3 333333000 96 X 96.69 X 96.43 x 96.60 X '6.54 _� / x 99.15 9X 8100, 5 \\\EEE.999 ZZZ333 9 0 /10 E 4040 acv- E 18 RCP 1-68.67.92 120RCP 1=94.17 (Cx 1 93 \\\c 9 0 ❑ 97.48 75 / x 98,29 x X 100.60 101.54 105.98 108,79`1 g � 134.33 Issued For Construction CO1Oi� 9B .69 / SMH 100.6 100.49 �' E 3 \ �F x 106.49 �� x 96.41 1 � Not For Construction 91.03 KF 6 / / ff=96.28 X 96.72 -� 0/ 100.60 MH f _ 100.09 1274 0 4 \\ \ WFjf4 .6 8 1=90.18 S -�-� I 0 R=101.38 �G"� I 101,02 n _-105,13 \ °, �\\ \� 133.50 0 3.1 WF 5 91,5 6 65Z / 6/� 99,10 V a 106,66 \ \\\ n o 1 96, 9 98.86 99.88 / = 100,59 0 6.27 107,07 \ 4y's 90.65 98 58.25 i 99.59 x 100.03 RIP RAP 100.71 100.64 ( y II �� RIP RAP _� __QB M 1 9 \\ \�\\\\ \ o \ 99.42 RIP RAP �� g 1 o c0 lR1M=98�6, 7 0 0 )0,34 x 7 / 0' R / / 98,91 x 1 4 0 00.0 I �B N 100.134 B X 107,42 \ 106.93 \\\\� 100.36 \ �/ 0 96.99 .3 k _ \ \\\\\ 00.20 � 98.7 9 96.76 "o-/ 98,73 98.65 CCB 98,64 8 SIGN 100. CCB 99.73 18RC 5=1. \ 06.54 9,14 \�' x 107,71 \ X 100.77 $ x I 99.47 100.04 I \ ` 06,98 \\ y 129,50 \9 x 100.20 °959[8 - - f) I I EXIT" \ \ \ \ \ 6\ \ X 94.6`9.17 / / 98.86 X99 - �.13\ \ 96 00.0 x 97. P- I 99.75 99,99 I \ \ M \ .06,4 \ \ gg \ \ �C 100.43 '00 99,99 / •48 98,67 X 8,35 99.62 100. 99.94 \ 1 7001 \ y� x 9E ,54 X 9,29 99.81 100.04 99.9 99,71 2 HP SPACES 9.74 F WFIA \ \ snLK1F=9B 21/ 22 SPA 4'ES H RIM=99.99 9 SPACES \ \ 88 93100.49 87-89.46, FtPP 198.20 I m z 12 RCP 1=93.34 a \ \ \ rc'0 X 107.40 2.6 X 98.64 8d1 97 94 100' BUFFER�evw _ 18"RCP Amo 99.96 y 18 RCP 1-90.15(CB) RIP R\4P \ \ 89,53 99,03 �O I �- x-A;�- �p0� GP 18RCP 1=90.04(DMH) N $ �l \� a 7,04 \ \ c a 36" RCP ` 97.69 ` J {tl �c� CB RIM=99.46 m\ 06. 1 \ ^\ o I=89.20 \ i � � . _ . _ . _ . . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . _ . 12RCP1=94.76F \c y \ \ �\ ° WF A4 9B- G8 ° 98.48 CCB 99.63 99.72 99.87 CCB 10 316- �OaO�- -6GB 99.99 ; 89.23 / 7.52 C o, 98.37 97.9 7.94 99.98 N�9.96 99.69 CCB \ \ X X 97,38 97 49 98.45 98,53 CCB x 95.40X 96.56 I 1 � 98.17 CB R/M=97.73 -�� ti 100.84* 10 ti 10"T g7 6=;16 100.25 \ >' I 97.11 10 C.l. 1 94.38 .75 100 RIP RAP Z R/P RAP a q � RAP TRANSFORMER 2 0 0 6"T \ - 97.90 RlP P 101.00 0 100.99 I W W I 101,08 v 101.1 \ 106.67 ° .22 WFIA3 / I 18RCP 1=92.23 97,77 101.02 101.11 CONC. \ �� c X08. \\ \ 88 391( / 99.94 100.51 0,09- 101.10 101,13 101,52 1101.57 101.08 101.14 100.58 / X 93 96,42 r 029.9 100.71 POST 93.24 I I i 97.78 METER ELECTRIC GAS METER SIGN b 1'01.01 \ \s�� 0 1 � x 106,99\ 6 ,6 SGC 107,73 ( o o DO NOT £N1ER t�itI x 95.31 I W 100.66 0 -1 106.87 E�E IL 106.79 1 8.69 II II II a CONC. 101. 0 1 E PP CTR 95.97 I I W FF=101.71 21 \ oo mnm � anN � o - - 101.59 \ 106.65 \ Z 94.66 95.37 EP I I I 2.0 100,80 100.65 v n 1 106.80 1 8,36 X 97,53 / SIGN / X 97.12 I / 1 9190 TRESPASSING' X 107,27 ocs 96 53 106,50 \ X 108,81 i 100.66 1 + X 106.96 95,73 I LOTS 725, 729, 106,50 108.06 1 101.50 10 M TMH O O 97.60 741, ' 100,76 100.55 00.49 RI R4 0 I 744 & 745 TOTAL AREA \ (� R=106.77 107.34 CV N e 10 X85 tri i s o 739,245 S.F. e £ \ 108.09 _II N I = 16.971 ACRES EXISTING BUILDING X 9 10X.42 © M)L R=105.83 ��°• O Z` W I I ¢ #1 TECHNOLOGY WAY I 5,9 \ N o 95,76 96.16 Q I I 99.66 719 \ 106.77 ai 4I 100,33 =� W I N O � I ¢ I I 2 10028 \ n 10 03 106. 6 d g U 0.0 I / 96,58 101.46 1100 100,01 c,OG i O p 05,16 L �79 I I D 87 \ I \ 104.98 X 97.06 I m 99.86 95. I FF=101.75 99.81 I 15 M 6 1 5 X 105,10 I 1�} 104.25 g a, Drawing Title: i 97,67 I6 101,72 g 101.44V SIGNS I 04.18 a "VISITOR g 9 .68 �g FIRE PARKING" \ ^. CONNECTION STONE & \ '0r X G8 o II MASONRY 99.38 10 7 \� 103. G O I I I \ IL` RET. WALL \ I 99,45 41 .9 99,4 = 100.67 101,24 101,96 101,63 c 101,68 -� 102.17 98.25 99,3 n W RIP RAP \ 1 96,35 x 96.64 I X 97.47 I \ 2 r o o Q y , �- 1?I RIP RAP RIP RAP RIP RAP r 14 P 198.2 P�'� v 14F 12P 14P o h cWi N I Q 96.67 97.10 I 98.47 CCB 99.12 99.66 100,44 100.92 101.32 CCB 101.43 CCB 101.45 'yl 12 0 cin 1 O Q V) Y x 102.2 V ` �i - 9P 98.75 N ` 02.21 X 102,75 QCB Q 98.94 2 ® 1 1.98 X 101.29 e I p 98.29 X 99b9- -(- . _ . _ X 100.56 X 101.17 X 101:31 I SMH R=97.47 0, h� - - - - - - - - y o I I 7 P I ` 02,2 W 87=88.83 00 8"C.L D:1. WqR ' - . - . _ _ - _ - EXIST. 8" _ _ _ _ _ _ _ . Y YYY 0 P o I lO��/ 101,39 _ _ _ _ _ _ _ _ _ _ _ _ _C.L_D,IWATER_ - - - - . _ . _ , _ . _ . _ `J 97.39CCB 96.95 97.2 97,73 99.44 100.07 100,62 101.21 101.29 C08 (01:13 o s SP Z O SMH R=100.27 98.36 I 100.90 O O 87=88.12 # I 010 P h CB 98.27 B\ 100.32 0 R/M=99.78 Z FGF 98.51 ® 1M=79.66 L �. J UJ Rio 12" r ^ < J i V / J NOTES s SPACES 99. O FOR LOT INFORMATION SEE A PLAN BY HAYES ENGINEERING, INC. ENTITLED "ROADWAY I I 6 WB " SIGN ABANDONMENT AND LAYOUT SUBDIVISION PLAN OF LAND" DATED MARCH 6, 2014 REVISED APRIL I 6WB 'SHIPPING & � 15, 2014. In RECENING" O 97.14 , TOPOGRAPHIC INFORMATION FROM AN ON THE GROUND SURVEY BY HAYES ENGINEERING 6 SPACES 8"WB 98.11 PERFORMED JANUARY 2017 THROUGH MARCH 2017. Ll m I 96'19 WATER UNE FROM A PLAN ENTITLED "TOPOGRAPHIC PLAN FOR THERMAL CIRCUITS" BY FAFARD m S7HERMAL CIRCUIT" IOGN TRESPASSING" /9 REAL ESTATE AND DEVELOPMENT CORP. DATED MARCH 20, 1995. " I / 36 BORDERING VEGETATED WETLANDS BY HAYES ENGINEERING, INC. FLAGGED ON JANUARY 30, 2017 AND MARCH 21, 2017. 1e S I I D Drawing No.: DATUM IS NGVD29. EXISTING DRAIN PIPES TO BE REUSED SHALL BE VIDEO INSPECTED AND CLEANED IF NECESSARY - EX 5 SPACES � © SMH =96.22 ,a \ SHEET 2 OF 4 b © fp ,r� x •., Prepared For: P , J a © •o Tpnj 00 4 v n CD m �- Q ,r �'�� :� 4!Q iS�d� 4 • •d L o � © C>qfl Gs C b a aoi o 'a Prepared By: L{ ! o d U o V7 m E m a0 o co 0 CD LO 0 a C V, M E -6 N N N V a W N 0000 nT .o m m 5GZ t3 Ip If 3 a- W _ Seal: 5 LOCUS MAP NNE N cy` 033604 SCALE.• 1 =800 N/F BARBARA DRISCOLL SOURCE.- SALEM GIS PARCEL ID: 06-0007-0 8d� lS / / / / / / Design By: PJO / Drawn By: EBL Checked By: PJO Project File: SAL-0042A Comp. No: SAL24 \, N.c� E]Issued For Permit t N/F SALEM CONSERVATION COMMISSION Op 90/ t PARCEL ID: 06-0011-0 ��o ®Issued For Review 1 � � ❑Issued For Bid [:]Issued For Construction 1 Not For Construction 1 Fe 's 0 Aq o o o,°a�3 o Fti N/F LYNN SAND & STONE �� `p PARCEL ID: 07-0012-0 / - /!��! N/F THE BARNES ROAD TRUST PARCEL ID: 07-0060-0 L � i o N .q N/F JOHN M INGEMI REALTY TRUST o PARCEL ID: 07-0051-0 / - ornmn <oinvna .- Z6 N/F USB CAPITAL, LLC PARCEL ID: 07-0087-0 N r O OOo Op N II � O ti O 7 O � N/F 96 SWAMPSCOTT ROAD, LLC V) ) PARCEL ID: 07-0070-0 ai N/F JACQUELINES GOURMET O o PARCEL ID: 07-0070-801 N/F SALCO REALTY, LLC PARCEL ID: 07-0077-0 N/F MH LLC PARCEL ID: 07-0070-802 N/F 15 ROBINSON RD LL N/F MH LLC Drawing Title: PARCEL ID: 07-0013-0 PARCEL ID: 07-0070-803 N/F KCT REALTY TRUST PARCEL ID: 07-0070-804 z N/F 5-96 SWAMPSCOTI- ROAD LLC O PARCEL ID: 07-0070-805 N/F GROOM REALTY LLC 0 Q PARCEL ID: 07-0070-806 Q �/ N/F DAVID & ELIZABETH EKSTROM Q Q PARCEL ID: 07-0070-807 > c N/F R & J SWAMPSCOTT ROAD f, _ (/) O G PARCEL ID: 07-0070-808 2 _ N/F S & D & DLLC V) :D—J PARCEL ID: 07-0070-809 U O ��. N/F SWAMPSCOTT ROAD ASSOC ry ry z PARCEL ID: 07-0070-810 W — _ .. U O W WSWAMPSCOTT Rono U Q I— J V N/F NORTH SHORE TENNIS & w SQUASH CLUB, INC. PARCEL ID: 07-0062-0 o� R� sW �G CURRENT OWNERSHIP: Drawing No.: KAK REALTY TRUST PARCEL ID: 07-0079-0 & PARCEL ID: 07-0078-0 C S SHEET 1 OF 4