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64-638 - 289 DERBY STREET - CONSERVATION COMMISSION 20q Mb� Pa � s NOURDA Status Sheet Address: 28ci DV� S` DEP#: Cvp -- Lg38 Application Type: 'Ircy" NDI Date Submitted: lel �II� Contact Name: Phone: Proposed activity:TV- plication Complete Correct Fee Received utters List Requested ceived iE gal Ad Sent :: egal Ad Confirmed z"Online �fAdded to Agenda Agenda to Applicant : en Comments to Commission EP Comments Hearing Opened: Continued: Site Visit: Abetters Notice Confirmed rErfermi�Sent to Applicant and DEP ��eConfirmation of Delivery Permit Uploaded to Salem.com G-,"�xpiration date added to calendar rr�dded to database eApplicant Recorded OoC with Registry Preconstruction Meeting: ❑ Certificate of Compliance Sent to Applicant and DEP ❑ Applicant Recorded CoC with Registry Notes: "Italics indicate only required for NOI WCON COMMWdministmtive\project status sheet\NOI and RDA status sheet 2017-6-15.doe RECEIVED AUG 312017 COMMONWEALTH OF MASSACHUSETTSDEPT. OF PLANNING a COMMUNITY DEVELOPMENT I " EXECUTIVE OFFICE OF ENERGY & ENVIRONMENTAL AFFAIRS DEPARTMENT OF ENVIRONMENTAL PROTECTION NORTHEAST REGIONAL OFFICE 205B LOWELL STREET, WILMINGTON, MA 01887 978-694-3200 CHARLES D.BAKER MATTHEW A.BEATON Governor Secretary KARYN E.POLITO MARTIN SUUBERG Lieutenant Governor - - Commissioner DATE: August 18, 2017 Municipality SALEM (city/town) RE:NOTIFICATION OF WETLANDS PROTECTION ACT FILE NUMBER The Department of Environmental Protection has received a Notice of Intent filed in accordance with the Wetlands Protection Act(M.G.L. c. 131, §40): t Applicant: CITY OF SALEM Owner: Address: 120 WASHINGTON STREET Address: SALEM,MA 01970 LOCUS: 289 DERBY STREET This project has been assigned the following file# :NE 064-0638 A FILE NUMBER ONLY INDICATES THAT THE APPLICATION CONTAINS THE MINIMAL SUBMITTAL REQUIREMENTS AND IS ADMINISTRATIVELY COMPLETE -NOT THAT THE INFORMATION IN THE APPLICATION IS ADEQUATE FOR ISSUANCE OF AN ORDER OF CONDITIONS. Although a file# is being issued,please note the following: If you have any questions regarding this letter, please contact: JAMES FREELEY @ (978)-694-3254 Cc: Salem Conservation Commission, 93 Washington Street, Salem, MA, 01970 This infranation is available in alternate format Call Donald M.Gomes,ADA Coordinator at 617-556-1057.TDD# 1-866-539-7622 or 1-617-574-6868. �{http://w .mass.00v/deD �.P Printed on Recycled Paper _ CITY OF SALEM 120 WASHINGTON STREET SALEM, MA 01970 \ � CITY OF SALEM CONSERVATION COMMISSION Salem Conservation Commission 978-619-5685 Will hold a public hearing for a Notice of Intent for the City of Salem, 120 Washington St, 3d Floor, Salem MA. Purpose of hearing is to discuss proposed construction of a public park with associated concrete walkways, retaining walls, landscaping and stormwater management system at 289 Derby St within an area subject to protection under the Wetlands Protection Act MGL c131§40 and Salem Wetlands Protection &Conservation Ordinance. Hearing will be held 8/24/17 at 6:30pm in the City Hall Annex, 3d floor conference room, 120 Washington St. Salem News publication date: August 17, 2017 Please charge account for: Robert H. Griffin, P.E. Griffin Engineering Group, LLC 495 Cabot Street, Suite 202 Beverly, MA 01915 978-927-5111 SHE SALEm NEws REQUEST FOR LEGAL NOTICE I understand that by signing this form, I am agreeing to the cost of the legal notice to be published in the newspaper. Payment is required at the time of the legal notice being received by the city and before it is published in the newspaper. Please make checks payable to THE SALEM NEWS and mail to: The Salem News Attn: Legal Notice 32 Dunham Road Beverly, MA 01915 Prepaid cost required to run: $260 ***Important:Average legal notice costs are estimated; customer will either be refunded or billed after the legal notice is published. Check# N/A (attach check) * Legal Notice Payment charged to Griffin Engineering Group, LLC account. Credit Card—please call our legal notice clerk at 978-338-2512. If payment is not received, the legal notice will be cancelled. �9 Signed Applicant/Authorized Agent Print Name: Robert H. Griffin. P.E. (Griffin Engineering Group, LLC) Address: 495 Cabot Street, Suite 202 Beverly, MA 01915 Phone: (978) 927-5111 Date: 1 1 1 Notice of Intent under the Massachusetts Wetlands 1 Protection Act and the 1 City of Salem Wetlands Protection Ordinance 1 1 Public Park Construction 289 Derby Street � I Salem, MA August 14 2017 ^fi ` r Applicant & Owner: ." : City of Salem Submitted to: ° City of Salem 4+ ° Conservation Commission 1 and 1 Massachusetts Department of Environmental Protection , a Prepared by: 1 S Griffin Engineering Beverly, MA 1 II 1 ' Griffin Engineering Group, LLC `August 11, 2017 ' Salem Conservation Commission City Hall Annex ' 120 Washington Street Salem, MA 01970 By Hand Delivery Subject: Notice of Intent for Construction of Public Park ' 289 Derby Street, Salem, MA Dear Commission Members: ' On behalf of the Applicant, City of Salem, we are pleased to provide eight (8) ' copies of this Notice of Intent (NOI) for the subject property. The proposed project involves constructing a public park with associated concrete walkways, retaining walls, landscaping and stormwater management system. ' The wetland resource areas in the vicinity of the project subject to protection under the Massachusetts Wetlands Protection Act (MA WPA) and the City of ' Salem Wetlands Protection Ordinance include Coastal Beach, Coastal Bank, Riverfront Area along the South River Canal, and Land Subject to Coastal Storm Flowage. We look forward to discussing the project with the Commission. Should you have any questions or comments, or require additional information, please do not ' hesitate to contact the undersigned. Very truly yours, Griffin Engineering G oup, LLC ' Robert H. Griff , P.E. Enclosures: NOI (8 copies) Cc: City of Salem (1 copy) CBA Architects (1 copy) Phone 978-927-5117 Fax 978-927-5103 www.griffineng.com ' 495 Cabt Street 2nd Floor Beverly, MA 01915 ' TABLE OF CONTENTS Notice of Intent Application (WPA Form 3) ' Attachment A Project Description 1.0 INTRODUCTION ......................................................................................A-1 2.0 WETLAND RESOURCE AREAS..............................................................A-1 ' 2.1 Land Subject to Coastal Storm Flowage (310 CMR 10.21)..............A-3 2.2 Coastal Beach (310CMR 10.27).......................................................A-3 2.3 Coastal Bank (310CMR 10.30).........................................................A-4 ' 2.4 Riverfront Area (310 CMR 10.58).....................................................A-4 2.5 Additional Information.......................................................................A-5 3.0 PROPOSED PROJECT/WETLAND RESOURCE AREA WORK .............A-6 3.1 Coastal Beach ..................................................................................A-6 3.2 Coastal Bank....................................................................................A-7 3.3 Riverfront Area .................................................................................A-7 3.3.1 Alternative Analysis ...............................................................A-8 ' 4.0 MITIGATION MEASURES........................................................................A-8 5.0 CONCLUSION..........................................................................................A-9 Figure 1 - Site Locus Plan.................................................................................A-2 Attachment B Project Plans (Bounded Separately) by CBA & Griffin Engineering - Existing Site Plan by North Shore Survey Corp. ' - Site Plan to Accompany NOI (Sheet C-1) by GEG Details (Sheet C-2) by GEG - Material Plan (Sheet L2.0) by CBA ' - Planting Plan (Sheet L6.0) by CBA Attachment C Supplemental Riverfront Area Form ' Attachment D Erosion Control Specifications Attachment E Affidavit of Service, Notice to Abutters & Certified List of Abutters ' Attachment F Proof of Mailing to the Division of Marine Fisheries Attachment G Stormwater Management Report 1 1 1 1 NOTICE OF INTENT APPLICATION ' (WPA FORM 3) i1 11 1 1 1 1 1 1 1 1 Massachusetts Department of Environmental Protection Provided by MassDEP k Bureau of Resource Protection - Wetlands MassDEP Fde Number; '- WPA Form 3 - Notice of intent . Document Transacbon.Number ;. Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem Important: W ' City/Town When A. General Information � When filing out ' 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 289 Derby Street Salem 01970 cursor-do not a.Street Address b. City/Town c.Zip Code ' use the return key. Latitude and Longitude: N42d31'10.8" W70d53'29.7" d.Latitude e. Longitude Map 34 Lot 441 ' f.Assessors Map/Plat Number g.Parcel/Lot Number 2. Applicant: ' Kathleen Winn a. First Name b. Last Name Note: City of Salem ' Before c.Organization completing this forth consult 120 Washington Street your local d. Street Address Conservation Salem MA 01970 ' Commission e.City/Town I.State g.Zip Code regarding any municipal bylaw 978-619-5684 KWinn@salem.com or ordinance. h.Phone Number i.Fax Number I.Email Address ' 3. Property owner(required if different from applicant): ❑ Check if more than one owner a. First Name b. Last Name ' c.Organization ' d. Street Address e.City/Town I.State g.Zip Code h. Phone Number i.Fax Number j. Email address 4. Representative (if any): Robert Griffin a. First Name b. Last Name Griffin Engineering Group LLC c.Company 495 Cabot Street,2no Floor d.Street Address ' Beverly MA 01915 e. City/Town f.State g.Zip Code 978-927-5111 978-927-5103 bgriffin@griffineng.com h. Phone Number i. Fax Number I. Email address ' 5. Total WPA Fee Paid (from NOI Wetland Fee Transmittal Form): NA NA NA ' a.Total Fee Paid b. State Fee Paid c.CityrTown Fee Paid ' wpafortn3.doc•rev.4/22/2015 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 Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 DocumentTransactionNumber Salem Salem i ' Citylrown A. General Information (continued) ' 6. General Project Description: Construction of a public park with associated concrete walkways, retaining walls, landscaping, and stormwater management system. 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. ❑ ® If yes, describe which limited project applies to this project. (See 310 CMR Yes No ' 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: South Essex ' a.County b.Certificate#(if registered land) Bk. 35640 Pg. 89 c.Book d.Page Number B. Buffer Zone & Resource Area Impacts (temporary & permanent) 1. ❑ 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. 1 ' wpaform3.doc•rev.4/22/2015 Page 2 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP: 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 t Cityrrown B. Buffer Zone & Resource Area Impacts (temporary& permanent) (coned) tResource Area Size of Proposed Alteration Proposed Replacement(if any) For all projects a. F-1Bank I.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 feel replaced e. ❑ Isolated Land ' Subject to Flooding 1.square feet 2.cubic feet of Flood storage lost 3.cubic feel replaced f. ® Rivertront Area South River Canal -Coastal ' 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: 24,793 ' square feet 4. Proposed alteration of the Riverfront Area: ' 24,793 12,815 11,978 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.21 above. 1 ' wpaform3.doc•rev.4/22/2015 Page 3 of 9 Massachusetts Department of Environmental Protection Provided by MassDEP Bureau of Resource Protection - Wetlands MassDEP File Number WPA Form 3 - Notice of Intent " z : ,¢ '} D6cument Trarrsaohon Ngmter Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem ' City/Town 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. F-1Designated 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 15 ' 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 1 h. ❑ Salt Marshes 1.square feet 2.sq It restoration, rehab.,creation i. ❑ Land Under Salt tPonds 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 24,982 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 ' wpaforn3.doc•rev.4/22/2015 Page 4 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP,. Bureau of Resource Protection - Wetlands MassDEP File Number ; 3` WPA Form 3 — Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 `" `"Salem 1Cityrfown C. Other Applicable Standards and Requirements t ❑ This is a proposal for an Ecological Restoration Limited Project. Skip Section C and complete Appendix A: Ecological Restoration Notice of Intent— Required Actions (310 CMR 10.11). tStreamlined 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)?To view habitat maps, see the Massachusetts Natural Heritage Atlas or go to thttp://maps.massgis.state.me.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 2016 MassGIS 1 Rabbit Hill Road ' (Oliver) 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, MESANVetlands Protection Act review, please complete Section CA.c, and include requested materials with this Notice of Intent(NOI); OR complete Section C.1.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& buffer zone) (b) ❑ Photographs representative of the site Some projects not in Estimated Habitat may be located in Priority Habitat, and require NHESP review(see ' http://www.mass.gov/eea/agencies/dfq/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.4/22/2015 Page 5 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP Bureau of Resource Protection -Wetlands �rMassoEP File Number WPA Form 3 - Notice of intent , Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Document Transaction Number-€ Salem's � ' Cityrrown C. Other Applicable Standards and Requirements (cont'd) I ' (c)❑ MESA filing fee (fee information available at http://www.mass.gov/dfwele/dfw/nhesp/regulatory review/mesa/mesa fee schedule.htm). ' 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 (0 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.goy/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 a 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 tIf yes, include proof of mailing, hand delivery, or electronic delivery of NO] 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-Southastate.ma.us Email: DMF.EnvReview-North(ostate.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.4/22/2015 Page 6 of 9 ' Massachusetts Department of Environmental Protection Provided byMassDEF Bureau of Resource Protection - Wetlands 7 MassDEP File Number WPA Form 3 — Notice of Intent Document Transaction Number Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Saiem ' City/Town 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 ® 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 M 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 ® No 7. Is this project subject to provisions of the MassDEP Stormwater Management Standards? a. ® 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) t2.® A portion of the site constitutes redevelopment 3. ® 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. 2 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. ® 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.4/22/2015 Page 7 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 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. Existing Site Plan by North Shore Survey Corp/ Site Plan to Accompany NOI & Details by GEG ' a. Plan Title Griffin Engineering Group Robert H. Griffin b. Prepared By c.Signed and Stamped by ' As-shown d. Final Revision Date e.Scale Material Plan (1-2.0) & Planting Plan (1-6.0) by CBA Landscape 8/14M7 Architects 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 date 4. State Check Number 5.Check date ' 6. Payor name on check: First Name 7. Payor name on check: Last Name 1 ' wpafonn3.doc•rev.4/22/2015 Page 8 of 9 ' Massachusetts Department of Environmental Protection Provided by MassDEP: Bureau of Resource Protection -Wetlands Maas.DEP File'Number ' WPA Form 3 - Notice of Intent DocumMassachusetts Wetlands Protection Act M.G.L. c. 131, §40 Salem tTran9aabn Nurmer Salem Cityrrown .---- ' F. Signatures and Submittal Requirements I 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 mall(return receipt requested)to all abutters within 100 feet of the property line of the project location. ' 1. ignaturaof Applicant2.Dee 3.Slgnaturs.eyPropetty Qw (if d' rent) - 4.Date _ .Z/SJs�3/G.F-1ft/ /O../'7 5.Signature of Repro sen i any) e.Dale ' 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. 1 1 ' wpafo"Idoc•rev.412212015 Page 9 of 9 ' ATTACHMENT A PROJECT DESCRIPTION 1 1 1 1 1 1 1 1 1 ' 1.0 INTRODUCTION The project site is located at 289 Derby Street (Map 34, Lot 441) in Salem, Massachusetts. The lot is approximately 0.574 acres (24,982 sq. ft.). The lot is a parking area with a mixture of bituminous concrete pavement and compacted ' reclaimed asphalt pavement (RAP). Approximately 95% of the site is so paved. The property is bounded by Derby Street to the north, commercial properties to the west and east, and South River Canal to the south. Figure 1 - United States ' Geological Survey (USGS) Locus Map depicts the general location of the project site. This Notice of Intent seeks approval for the construction of a public park with ' associated concrete walkways, retaining walls, landscaping and stormwater management system. The proposed activities are located within the Buffer Zone to a , Coastal Beach and Coastal Bank; the Riverfront Area; and Land Subject to Coastal Storm Flowage. Such areas are subject to protection under the Wetland Protection Act (WPA) and City of Salem Wetland Protection Ordinance ' The project is located within historically filled tidelands. Following completion of the Wetland Protection Act permitting, a Chapter 91 license application will be filed with DEP. The proposed public park is considered a water-dependent activity. The wetland resource area is further described in Section 2.0. A detailed description of the proposed work is provided in Section 3.0. Mitigation measures associated with the project are described in Section 4.0. The reader is referred to Attachment B for a site plan showing the proposed work. ' 2.0 WETLAND RESOURCE AREAS Griffin Engineering Group, LLC reviewed information regarding the 289 Derby Street property to determine if the area of proposed work is located within resource areas regulated under the Massachusetts Wetlands Protection Act (MA WPA) and the City of Salem Wetlands Protection Ordinance. The review included an on-site ' inspection, topographic survey, and a review of pertinent published information regarding the area. Information reviewed included: ' ➢ USGS Topographic Quads (Salem, MA 1:25,000 - Metric - 1985); ➢ FEMA Flood Insurance Rate Maps, City of Salem, (Map Number 25009C0419G), Effective July 16, 2014; ➢ Massachusetts Natural Heritage Atlas, 12th Edition, Effective October 1, 2008, Marblehead North Quad; ' ➢ U.S. Fish &Wildlife Service National Wetlands Inventory Map (hftp:/www.fws.gov/wetlandsNVetlands-Mapper.htmi) ➢ MassGIS Online Mapping Tool - OLIVER ' A - 1 5 is j TAW'% ' Salem a.> � , k. � • l • 5 Ta ?y • ! � i 7a • 1 i ` �'• r 3 \1 A ' 0 250500 1,000 1,500 2,000 Feet Figure 1 1 inch= 1.000 feet Site Locus Plan Ref: USGS Scanned Topo Maps(MassGIS). N Notice of Intent Griffin Engineering Group, LLC n CITY OF SALEM Beverly, MA N 289 Derby Street Salem MA ' Based on the review, Land Subject to Coastal Storm Flowage (310 CMR 10.21), Coastal Beach (310 CMR 10.27), Coastal Bank (310 CMR 10.30), and Riverfront ' Area (310 CMR 10.58) were determined to be present in the vicinity of the proposed work. The proposed work within these areas requires filing a Notice of Intent in accordance with the MA WPA and the City of Salem Wetlands Protection Ordinance. ' 2.1 Land Subject to Coastal Storm Flowage (310 CMR 10.21) As defined by the Act and the Bylaw, Land Subject to Coastal Storm Flowage ' (LSCSF) generally corresponds with the FEMA Flood Insurance Rate Maps for the City of Salem. The FEMA Flood Insurance Rate Map referenced above indicates that the entire property is within Zone AE, an area of 100-year flooding, with a Base ' Flood Elevation (BFE) of 10-ft. (NAVD 88 Datum). The MA WPA does not provide performance standards for work conducted within this ' resource area. Instead, 310 CMR 10.21 states that proposed work must comply with the applicable sections of 310 CMR 10.21 through 10.37. Therefore, the applicable standards are for those of the Coastal Bank, as outlined below in Sections 2.2. In ' accordance with 310 CMR 10.02 (2)(b), LSCSF does not have a buffer zone subject to regulation in accordance with the Act. ' 2.2 Coastal Beach (310 CMR 10.27) As defined by the MA WPA, the Coastal Beach is the gently-sloping intertidal land extending from the base of the existing seawall to the mean low water line. At this ' site, the Coastal Beach is comprised of unconsolidated shoreline sediments (tidal flats). In accordance with 310 CMR 10.27, the Coastal Beach is assumed to be significant to storm damage prevention, flood control and the protection of wildlife habitat. Therefore, the applicable performance standards for work to be conducted on a Coastal Beach resource area are 310 CMR 10.27 (3), (6) & (7). In summary, these are: ' (3) Any project on a coastal beach shall not have adverse effects by increasing erosion, decreasing the volume, or changing the form of any ' adjacent or downdrift coastal beach. (6) A project on a tidal flat shall, if water-dependent, be designed and ' constructed using best available measures so as to minimize adverse effects. ' (7) No project may be permitted which will have an adverse effect on habitat sites of rare species. ' The proposed project will not adversely affect the resource area and will fully meet these standards. Appropriate mitigation measures and conformance with the performance standards are further described in Section 3 below. ' A - 3 ' 2.3 Coastal Bank (310 CMR 10.30) I ' As defined by the MA WPA, the Coastal Bank is the seaward face of the man-made seawall located along the southerly property boundary. Since the Coastal Bank consists of vertical seawall (steeper than 4:1 slope), the "top of coastal bank" is ' determined by Definition D of the DEP Policy DWW 92-1 Definition and Delineation Criteria for Coastal Bank: ' A "top of coastal bank" will fall below the 100-year flood elevation and is the point where the slope ceases to be greater than or equal to 10:1. ' Based upon the aforementioned policy and the site-specific topographic field survey, the top of Coastal Bank falls along the top of the seawall is shown on the Site Plan provided in Attachment B. ' In accordance with 310 CMR 10.30, the Coastal Bank is assumed to be significant to storm damage prevention and flood control. Since the coastal bank is almost ' entirely comprised of a man-made seawall that extends above the mean high water line, the bank acts as a vertical buffer to storm waters and does not provide sediments to the adjacent coastal beaches. Therefore, the applicable performance ' standards for work to be conducted within the Coastal Bank resource area are 310 CMR 10.30 (6) - (8). In summary, these are: (6) The project shall have no adverse effects on the stability of the coastal bank. ' (7) Coastal engineering structures may be permitted except when the bank is significant because it supplies sediments to coastal beaches. ' (8) No project may be permitted which will have an adverse effect on habitat sites of rare species. ' Conformance of the proposed work to the above performance standards are described in Section 3.2 below. No adverse impact to the form and function of the coastal bank is anticipated. ' 2.4 Riverfront Area (310 CMR 10.58) ' As defined in the regulations, the Riverfront Area is divided into two zones, the Inner and Outer Riparian zones, which extend 200 feet landward from the Mean High Water (MHW) mark on the South River Canal. The Inner Riparian Zone is the area between ' 0-ft to100-ft from MHW and the Outer Riparian Zone is the area between 100-ft to 200-ft from MHW. Approximately 99% of the project site is located within the Riverfront Area to the South River Canal. The lot was created prior to August 1, 1996, before the Riverfront Act was adopted. ' A - 4 1 ' All of the project land within 200-feet of the South River Canal qualifies as degraded ' land within the meaning of 310 CMR 10.58(5), 'Redevelopment Within Previously Developed Riverfront Areas'. In accordance with 310 CMR 10.58(5), the applicable general performance standards for work within a Previously Developed Riverfront ' Area include: a) At a minimum, proposed work shall result in an improvement over existing conditions of the capacity of the Riverfront Area to protect the interests identified in M.G.L. c.131 sec.40. When a lot is previously degraded but no portion of the Riverfront Area is degraded, the ' requirements of 310 CMR 10.58(4) shall be met; b) Stormwater management is provided according to standards ' established by the Department; c) Within 200 foot riverfront areas, proposed work shall not be located ' closer to the river than existing conditions or 100 feet, whichever is less, or not closer than existing conditions; ' d) Proposed work, including the expansion of the existing structures, shall be located outside the Riverfront Area or toward the Riverfront Area boundary and away from the river; ' e) The area of proposed work shall not exceed the amount of degraded area, provided that the proposed work may alter up to 10% if the tdegraded area is less than 10% of the Riverfront Area; f) When an applicant proposed restoration on-site of degraded riverfront ' area, alteration my be allowed notwithstanding the criteria of 310 CMR 10.58(5)(c),(d) and (e) at a ratio in square feet of at least 1:1 of restored area to area of alteration not conforming to the criteria. Areas ' immediately along the river shall be selected for restoration. Alteration not conforming to the criteria shall begin at the Riverfront Area boundary. ' Conformance of the proposed work to these standards and additional criteria are described in Section 3.4 below. ' 2.5 Additional Information ' • The map of Estimated Habitats of Rare Wildlife and Certified Vernal Pools does not depict the presence of rare wetland wildlife habitats or certified vernal ' pools at or near the project area (Massachusetts Natural Heritage Atlas, 12th A - 5 1 ' Edition, Effective October 1, 2008 & MassGIS — Oliver, 2016). ' The National Wetlands Inventory Map indicates the canal as being subtidal estuarine with unconsolidated bottom wetland area and that there is no wetlands on the subject property. 1 3.0 PROPOSED PROJECT /WETLAND RESOURCE AREA IMPACTS The proposed project consists of constructing a public park with associated concrete walkways, retaining walls, landscaping, and stormwater management system. Due ' to the small size of the parcel and its location on Derby Street, work within the Buffer Zone, Coastal Beach, Coastal Bank, Riverfront Area, and Land Subject to Coastal Storm Flowage is unavoidable and necessary for the public park construction project. ' The extent of the proposed project is depicted on the attached site plans (Attachment B). All of the proposed work will occur within presently-disturbed areas consisting of pavement and RAP. The proposed project will substantially improve conditions on-site by reducing the amount of impervious area: approximately 11,200 sq. ft. of ' pavement and RAP will be replaced with lawn and planting beds. Additionally, a modern stormwater management system will be installed that captures and treats the majority of the stormwater runoff from the concrete walkways. 1 The proposed park will provide public access to the waters edge and will be an integral piece of the waterfront public walkway (Salem Harbor Walk) that is planned to go around the South River Canal. The park is intended to be used as a place for events that encourage public engagement, community-driven programming, and promotion of the arts, music and recreation. ' During construction, erosion control measures are proposed as specified in Attachment D. Haybales and/or silt fence will be placed downgradient of the ' proposed construction activities. All disturbed areas are intended to be re-vegetated, and/or restored to pre-disturbance conditions as soon as practicable. The reader is referred to Attachment B for a site plan showing the proposed work ' area. ' 3.1 Coastal Beach The 3-ft by 5-ft boulder splash pad is proposed within the Coastal Beach (tidal flats). The proposed work will not adversely affect the tidal flats and will fully comply with the ' standards outlined in Section 2.2 above. The tidal flats are assumed to be significant to storm damage prevention, flood ' control, and the protection of marine fisheries and wildlife habitat. The proposed ' A - 6 1 ' project is a water-dependent use and is designed using the best available measures. There are no known rare species or habitat in the vicinity of the project site. An ' increase in erosion is not anticipated due to the observed low tidal currents. Decreasing the volume or changing the form of the tidal flats, or any adjacent tidal flat, is unlikely due to the small size of the project. However, mitigation measures I ' are proposed to further minimize adverse effects on the tidal flats during construction and throughout the useful life of the structure. ' 3.2 Coastal Bank As illustrated on the site plan and as discussed herein, the proposed work within the Coastal Bank resource area includes the installation of a 12-inch diameter drainage ' pipe that will discharge treated stormwater runoff to the South River Canal. The performance standards for work on a Coastal Bank were outlined in Section 2.2 above. The proposed work meets these performance standards because the work ' will not affect the overall stability of the bank. Also, as stated above, there are no known rare species or habitat in the vicinity of the project site and the bank does not provide sediments to the adjacent coastal beaches. ' 3.3 Riverfront Area As noted above, the entire project site is within 200 feet of the mean high water line of the South River Canal and is considered degraded under 310 CMR 10.58(5) — Redevelopment Within Previously Developed Riverfront Areas. The subject area contains a parking area consisting of pavement and RAP. The proposed work meets the performance standards established under 310 CMR 10.58(5) of the MA WPA and the local Ordinance for the following reasons: ' a) The proposed project will result in an overall improvement over existing conditions because it will clean up a largely degraded site within and adjacent to resource areas. The project will redevelop land that has been ' substantially altered by previous activities at the site. The existing land surfaces are degraded and urban; wildlife activity at the site is minimal. All cleared and disturbed areas, except concrete walks and hardscape ' surfaces, are to be covered with planting beds or loam and seed. Trees will be planted around the site. ' b) Stormwater management will be provided in accordance with the MA DEP Stormwater Management Regulations. The Stormwater Management Report is separately bound and referenced as Attachment F. ' c) The proposed work is not located closer to the river than existing conditions. All of the Riverfront Area located on the project site is disturbed and degraded. ' d) Approximately 99% of the project site is located within the Riverfront Area. A - 7 1 ' Locating all of the proposed work outside the Riverfront area is not possible. ' e) The proposed work is located entirely on existing degraded surfaces within the Rive rfront Area. Therefore, the area of proposed work does not ' exceed the amount of degraded area. 3.3.1 Alternative Analysis An in-depth Alternatives Analysis meeting the criteria identified in 310 CMR ' 10.58(4)(c) is not required for redevelopment work in previously degraded areas, which encompasses all of the project. ' 4.0 MITIGATION MEASURES ' To minimize potential impacts during construction, careful erosion controls and construction practices will be employed throughout the work as described below. ' Prior to work commencing on the site, there will be a preconstruction conference with the contractor. The purpose of this meeting will be to coordinate the best methods for erosion and sedimentation controls, protection of the surrounding wetland ' resource areas, and other construction-related issues. The implementation of a comprehensive soil and erosion control plan will occur prior to any construction activities within the project area. In general, the following sequence of construction ' control will occur: • Erosion and sedimentation control devices will be installed, as specified in ' Attachment D, along the edge of the down gradient side of the project area prior to construction as depicted on the site plan (Attachment B). In addition to providing for sedimentation deposition and reducing runoff during storm ' events, this barrier will limit the work area for the equipment operators and prevent unnecessary disturbance. • Erosion and sedimentation control devices will be inspected daily during periods of active construction and bi-weekly during the remainder of the ' construction period. Sediments will be removed from the barriers as soon as they reach a depth of 6 inches. ' Runoff from the site will be directed through sedimentation control barriers. • During construction, disturbed areas will be kept to a minimum and vegetative ' stabilization of these areas will occur as soon as possible. • Temporary seeding, mulching, or other suitable stabilization measures will be ' used to protect exposed critical areas should unprotected soils remain ' ' A - 8 ' exposed for prolonged periods. ' Construction activities shall be monitored on-site by the construction supervisor to ensure that the soil erosion and sediment control features are installed properly, maintained, and to evaluate the need for additional erosion control and/or ' stabilization measures. The inspector will perform the following tasks: • Supervise the installation and maintenance of the soil erosion and sediment ' control features. • Evaluate the need for additional soil erosion and sediment control features. ' 0 Scheduled inspections of erosion control features, including construction entrance, haybales, and dust control. ' 0 Supervise and monitor temporary and permanent stabilization activities. ' 5.0 CONCLUSION The construction of the public park at 289 Derby Street is designed to comply with ' both state and local wetland regulations and to minimize impacts on the adjacent wetland resource areas. The proposed work meets the applicable performance standards for work to be performed on Coastal Beach, Coastal Bank and ' pre-developed Riverfront Area. Permanent unavoidable impacts and temporary impacts have been minimized. Adequate mitigating measures are proposed so as to not compromise the function of the resource areas and to improve overall conditions. The proposed project, with it's mitigation measures, meet the performance standards and protect the interests of the Massachusetts Wetlands Protection Act and the City of Salem Wetlands Protection Ordinance. 1 A - 9 1 1 1 i ' ATTACHMENT B ' PROJECT PLANS ' - SITE PLAN TO ACCOMPANY NOI (SHEET C-1 ) ' - DETAILS (SHEET C-2) - EXISTING SITE PLAN BY: NORTH SHORE SURVEY CORPORATION) - MATERIAL PLAN (SHEET L2.0) BY: CBA LANDSCAPE ARCHITECTS - PLANTING PLAN (SHEET L6.0) ' BY: CBA LANDSCAPE ARCHITECTS 1 1 1 1 1 1 1 1 ' ATTACHMENT C SUPPLEMENTAL RIVERFRONT AREA FORM 1 1 1 1 1 1 1 1 1 Notice of Intent Supplemental Form for Riverfront Area ' The Notice of Intent Supplemental Form for Riverfront Area is recommended for use with the Notice of Intent (Form 3)in the wetland regulations(3 10 CMR 10.99). This form should be used for activities that are located in the Riverfront Area. See instructions for information about completing this form.Applicants also may refer to the "Checklist for Review of Activities in the Riverfront Area"issued by the Department of Environmental Protection in November 1996. The checklist should not be submitted with the form;it is included to indicate how a conservation commission may evaluate application information. Attach the completed supplemental form to the Notice of Intent, including any appropriate documentation as needed. Use additional pages if necessary. 1. Mean annual high-water line determined by: ❑ Changes in soil,vegetation;water marks;scouring ' ❑ Top of bank(inland rivers) ❑ First observable break in slope ❑ Mean annual flood level ' EtMean high water(for coastal rivers only) (Identify the mean annual high-water line on the Notice ofintent plans.) ' 2. Width of Riverfront Area: Ef 200 feet 1125 feet (Idents the Inner and Outer Riparian Zones on the Notice of intent plans) ' 3. Activity is not subject to Rivers Protection Act because: ❑ Expansion of publicly owned structures,airports,marine cargo terminals begun before November 1, 1996 ❑ Draft FIR filed on project before November 1, 1996 ' ❑ Building permit filed before October 1, 1996 and granted before April 1, 1997 ❑ Roads, utilities,drainage structures under a definitive plan approved or endorsed on or before August 1, 1996 pursuant to the subdivision control law(MGL c.41 §81U) ' ❑ Subject to Chapter 91 waterways license or permit ❑ Other-describe: t 4. Project type: ❑ Single family home ❑ Residential subdivision ❑ Commercial development ❑ Industrial development ❑ Transportation V Other-describe: Construction of a Public Park ' 5. Amount of alteration in Riverfront Area: a. If Riverfront Area is 200 feet wide,identify amount of alteration: ' 12,815 square feet of Inner Riparian Zone (0-100 feet from river) 11,978 square feet of Outer Riparian Zone (100-200 feet from river) ' b. If Riverfront Area is 25 feet wide,identify amount of alteration: square feet of Inner Riparian Zone (0-15 feet from river) ' 11/96 (over) 1 6. Describe why the proposed project needs to be located in the Riverfront Area. 1 Address the following questions in your answer: • Can the project be moved out of the Riverfront Area?Can the project be located further away from the river or stream?If not,why? • How do costs and logistical constraints(e.g.,physical site conditions,local zoning requirements)limit the alternatives? - • What alternatives were considered? The lot was created prior to August 1, 1996,before the Riverfront Act was adopted. All of the proposed work within the Riverfront Area will occur within existing pavement or compacted ' reclaimed asphalt pavement parking areas. Relocation of the proposed work outside the Riverfront Area is not possible because approximately 99%of the lot is within the Riverfront Area. (Use additional pages if necessary.) 7. Does the proposed project meet the criteria for no significant adverse impacts? a.Check criteria that apply: V meets performance standards for all other wetland resource areas ❑ undisturbed vegetation in the 100-foot Inner Riparian Zone(15 feet in 25-foot Riverfront Area) ❑alteration in the I00-foot Outer Riparian Zone limited to 5,000 square feet or 20%of zone,whichever is greater* ' U meets performance standards for stormwater management** *This performance standard is waived for the I0-foot Outer Riparian Zone when the Riverfront Area is 25 feet. **Stor nwater management is not required for single family houses and small subdivision projects as described in ' the Department's Stonnwater Management Policy. b. Is the project site located in estimated rare species habitat or in a certified vernal pool as noted on the Massachusetts Natural Heritage Atlas? _yes ✓ no ' If yes,has a copy of the Notice of Intent and this form been sent to the Natural Heritage and Endangered Species Program according to Notice instructions? _yes no ' If any of the criteria listed in (a.) above are not met,describe why the project will have no significant adverse impacts on the Riverfront Area. (Note:forsinglefamily house projects on lots recorded as of August 1, 1996 which cannot meet the performance standards,describe how the project minimizes all impacts.) The project is within previously developed areas within the Riverfront Area. Potential impacts to the Riverfront Area will be minimized by stormwater management controls and the use of erosion control during construction. No undeveloped natural areas are proposed to be disturbed. ' (Use additional pages if necessary.) 1 11 1 1 ' ATTACHMENT D EROSION CONTROL SPECIFICATIONS 1 X11 1 1 1 1 1 1 I ' tSECTION 01568 EROSION CONTROL, SEDIMENTATION AND CONTAINMENT OF CONSTRUCTION MATERIALS Part 1 - General ' 1.1 Provide all work and undertake all measures necessary to control soil erosion from the work site throughout the Construction Phase and continuing until removal of siltation controls are authorized by the Engineer or Local Authority. This work shall be continuous throughout the project, regardless of the construction schedule undertaken by the Contractor. The contractor must ensure that controls perform as specified even ' when he is not present at the work site. 1.2 Prevent soil and construction materials from the work area from reaching wetlands or waterways at all times. 1.3 Install and maintain erosion controls as shown on the drawings and as specified. Should additional controls or measures be necessary to control erosion, as determined by the ' Owner or Engineer, then provide and maintain same. 1.4 Controls installed and maintained must prevent movement of soil and construction ' materials from the work areas at all times. Controls must be capable of performing adequately during normal and severe storm events. ' 1.5 Controls are to be installed prior to disturbing earth or vegetation at the project. 1.6 Compliance with all requirements of the Order of Conditions issued by the Local Authority is the responsibility of the Contractor, with the following exceptions: -Filing of the Order on the property deed. -Requirements for actions at the property after the authorized removal of erosion controls. Part 2 - Quality Assurance 2.1 All erosion controls to be constructed of new materials approved by the Engineer and consistent with these specifications. Replace inadequate or worn controls with new materials. 2.2 Inspect and maintain as necessary erosion controls within 24 hours following every t storm event. 2.3 Disturbance of soils or vegetation and construction activities of any type beyond the limits of work shown on the drawings are prohibited. Do not disturb adjacent vegetation. ' 2.4 The Contractor is solely responsible, at no additional cost to Owner, for repairs, replanting, remediation, or reconstruction or other any actions ordered by the Local ' Authority resulting from non-compliance with these requirements. Non-compliance includes, but is not limited to, failure to prevent soil and construction materials from reaching a wetlands or water body. ' 01568-1 2.5 The Contractor is required to keep on-site, throughout the project, 50 feet of straw wattle, 10 additional haybales, or 50 feet of silt fence. These additional erosion control materials are to be available for use solely at the project site and are to be installed immediately upon direction of the Engineer or the Local Authority. ' 2.6 Follow preventative erosion control practices established by the United.States Soil Conservation Service. 2.7 Do not allow litter or construction materials to blow from the work area and enter I ' wetlands. Immediately remove by hand any such materials entering wetlands. Part 3 - Submittals 3.1 Two weeks prior to disturbing soil at the project site, submit to Engineer for review and approval, catalog cuts showing the proposed materials to be used during construction. ' Part 4 - Materials ' 4.1 Hay bales shall be made of straw or hay, tightly bound with string, and measure approximately 18" x 18"' x 3' or larger. 4.2 Silt Fence - shall be made of a woven geotextile with a metal reinforcing mesh fully ' integrated during the manufacturing process into the geotextile. 4.3 Stakes - Stakes for securing hay bales and silt fence shall be made of oak, and shall have nominal dimensions of 2" x 2" x 4'. Metal fence posts for silt fence acceptable. 4.4 Straw Wattle or Silt Sock shall be 8" to 10" diameter biodegradable straw wattle or wood ' chip mulch blown into biodegradable fabric tube. Part 5 - Dewatering Discharges 5.1 Water discharged from the construction area must be completely free of petroleum products. ' 5.2 The maximum rate of pumping, without special approval of the Engineer, shall be 150 gallons per minute. ' 5.3 Dewatering waters shall pass through a silt removal chamber having an overflow rate less than 3,500 gallons per square foot per day and a depth of at least three feet, and then be filtered through hay bales prior to being allowed to flow to a wetlands or water body. Effluent shall have turbidity less than 10 NTU. Part 6 -Additional Requirements 6.1 Install silt fence around all stockpiles of soil placed within 200' of a wetlands. 6.2 Controls are to be removed after vegetation in the work area has been established, and is determined by the Engineer or Local Authority as being effective at controlling erosion. 01568-2 1 I11 1 1 I ' ' ATTACHMENT E AFFIDAVIT OF SERVICE, NOTICE TO ABUTTERS, ' & CERTIFIED LIST OF ABUTTERS 1 1 1 1 1 1 1 1 1 ' Affidavit of Service Under the Massachusetts Wetlands Protection Act I ' (to be submitted to the Massachusetts Department of Environmental Protection and the local Conservation Commission when filing a Notice of Intent) I, Robert griffin, hereby certify under the pains and penalties of perjury that on X 1VIII , notification was given to abutters in compliance with the ' second paragraph of the Massachusetts General Laws Chapter 131, Section 40, and the DEP Guide to Abutter Notification dated April 8, 1994, in connection with the following matter: A Notice of Intent filed under the Massachusetts Wetlands Protection Act and the City of Salem Wetlands Protection Ordinance by City of Salem with the ' Salem Conservation Commission on */'Y(17 for the construction of a public park with associated concrete walkways, retaining walls, landscaping, and stormwater management system at a parking area. The work is to be performed ' at 289 Derby Street in Salem, Massachusetts. The form of notice, and a list of the abutters to whom it was given and their addresses, are ' attached to this Affidavit of Service. Robert H. Griffin, P.V Date 1 ' Notification to Abutters Under the Massachusetts Wetlands Protection Act and the City of Salem Wetlands Protection Ordinance In accordance with the second paragraph of Massachusetts General Laws Chapter 131, Section 40, and the DEP Guide to Abutter Notification dated April 8, 1994, you are hereby notified that: A. The name of the applicant is City of Salem . ' B. The applicant has filed a Notice of Intent with the Salem Conservation Commission seeking permission to construct a public park with associated concrete walkways, retaining walls, landscaping, and stormwater management system. Such work is within wetland resource areas subject to protection under the Wetlands Protection Act (Mass. General Laws Chapter 131, Section 40) and the City of Salem Wetlands Protection Ordinance. ' C. The address of the property where the work is proposed is 289 Derby Street (Map 34, Lot 441) in Salem. D. Copies of the Notice of Intent may be examined at the Salem Conservation Commission Office, 3rd Floor of the City Hall Annex, 120 Washington Street, Salem, MA between the hours of 8:00 AM and 4:00 PM, Monday through Wednesday: 8:00 AM and 7:00 PM Thursday, and 8:00 and 12:00 PM Friday. E. Copies of the Notice of Intent may be obtained from (check one) either the applicant ' or the applicant's representative X by calling this telephone number: 978.927.5111. F. Information regarding the date, time, and place of the public hearing may be obtained from the Salem Conservation Commission Office, 3rd Floor of City Hall Annex, 120 Washington ' Street, Salem, MA by calling this telephone number (978-745-9595) between the hours of 8:00 AM and 4:00 PM Monday through Wednesday: 8:00 AM and 7:00 PM Thursday, and 8:00 and 12:00 PM Friday. Note: Notice of this Public Hearing, including its date, time, and place, will be published at least 5 days in advance in the Salem Evening News . The tentative date for the hearing will be ' August 24, 2017. Note: Notice of the Public Hearing, including its date, time, and place, will be posted in the City ' Hall not less than 48-hours in advance. Note: You may also 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 DEP call: Central Region: (508) 792-7650 Northeast Region: (978) 694-3200 Southeast Region: (508) 946-2714 Western Region: (413) 784-1100 1 1 1 List of Property Owners and Abutters 1 The Notification to Abutters Form has been forwarded by Certified Mail (return receipt requested) to the following abutters and property owners within one hundred feet of the property lines of the land where the activity under the jurisdiction of the Wetlands Protection 1 Act and the City of Salem Wetlands Protection Ordinance is proposed: THE FOLLOWING LISTING WAS OBTAINED FROM THE CITY OF SALEM ASSESSORS 1 OFFICE VIA THE DEPARTMENT OF PLANNING AND COMMUNITY DEVELOPMENT IN AUGUST 2017. ' 1 1 1 � 1 II i 1 1 1 1 1 i 1 1 ' CITY OF SALEM ASSESSOR'S CERTIFICATION OF ABUTTERS AND PROPERTY OWNERS ' BOARD/COMMISSION: Conservation Commission PROJECT SITE: 289 Derby St(34_0441_0) ' DATE: 7/31/2017 ' 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 Wet] nds Protection Act 310 CMR 10.05(4)(a)) to the parcel(s)of land listed above as the ject site. ' Assessor's Signatur • Date: 31 6bj"1-y, Number of initialed pages attached: 7� Once Certified,Return to: Ashley Green,Department of Planning and Community Development , � E oS CONGRES x SOF S STREET x T OON GRES "� €z , `t`P 1 J 14 4.z cn uj ir Iie 1 '�. a ��.v c �1 ... y'mv"}Ya * Mb#+ '� 9 '"13•'k }{s�. �w• N �� ( If 'S1 W '$• �Y.A WV l }x ok FH„ .'- 1 _ u 5 � w� t YETTE STREET 1 UAFA Uj W CENTRAL STREET 1 WUl _1 1 } DODGE STREE? COURT 1 i Parcel ID: 34t441-0 Parcel ID:34-0435-0 Parcel ID:34-0436-0 ' CITY OF SALEM SALEM CITY OF MASSACHUSETTS ELECTRIC 93 WASHINGTON STREET SALEM, MA 01970 C/O PROPERTY TAX DEPT SALEM, MA 01970 40 SYLVAN ROAD ' WALTHAM, MA 02451 Parcel ID:34-0440-0 Parcel ID:34-0442-0 Parcel ID:34-0443-0 SOUTH HARBOR HOLDINGS HESS RETAIL STORES LLC SOUSA JEROME R JR ' P 0 BOX 829 C/O HESS CORPORATION C/O SALEM FLATBREAD, LLC SALEM, MA 01970 539 SOUTH MAIN STREET 258 ANDOVER STREET FINDLAY, OH 45840 GEORGETOWN,MA 01833 ' Parcel ID:35-0260-0 Parcel ID:35-0264-0 IRISHEA TRUST, LLC SALEM CITY OF 288 DERBY STREET CHARTER ST CEMETERY ' SALEM, MA 01970 MA 1 1 1 1 1 1 1 ATTACHMENT F PROOF OF MAILING TO THE DIVISION OF MARINE FISHERIES X11 I , I ' II , Bob Griffin From: Mail Delivery Subsystem <postmaster@mail.griffineng.com> Sent: Monday, August 14, 2017 8:23 AM To: bgriffin@griffineng.com Subject: Message delivered: NOI Submittal - 289 Derby Street - Salem Attachments: Att00859640.txt;Att00853848.txt This is an informative message sent by mail.griffineng.com. The server has successfully delivered your mail message Subject: NOI Submittal -289 Derby Street-Salem Date: Mon, 14 Aug 2017 08:22:16-0400 to the following addresses: <dmf.envreview-northCa)state.ma.us>(relayed) Bob Griffin From: Bob Griffin <bgriffin@griffineng.com> Sent: Monday,August 14, 2017 8:22 AM To: 'dmf.envreview-north@state.ma.us' Subject: NOI Submittal - 289 Derby Street - Salem Attachments: Salem289DerbyStNOI-081417.pdf; Salem289DerbySt-NOIPlans-081417r.pdf; Sa Iem289DerbyStormwaterRpt-081417.pdf Dear Environmental Reviewer: Please see attached Wetland Protection Act Notice of Intent and supporting plans and stormwater report. The documents are in connection with the proposed construction of a public park at the subject site. Please let me know if you have any questions or comments. A hard copy will be mailed to DMF Gloucester today. Bob G. Robert H. Griffin, P.E. Griffin Engineering Group, LLC 495 Cabot Street, 2"d Floor Beverly, MA 09915 978-927-511115103 (fax) bgriffin(Wgriffineng.com 1 II ATTACHMENT G ' STORMWATER MANAGEMENT ' REPORT ' (BOUND SEPARATELY) 1 1 1 1 1 1 1 1 1 Stormwater 1 Management 1 Plan under the 1 Massachusetts Stormwater Management Regulations 1 for : 1 Public Park Construction 289 Derby Street el Salem, Massachusetts Ai j YK August 2017 1 "r Applicant: City of Salem Submitted to: City of Salem Conservation 1 Commission & Mass. DEP 1 ' Prepared by: 1 Griffin Engineering Beverly, MA 1 1 ' TABLE OF CONTENTS Stormwater Management Checklist Attachment A Project Description 1.0 INTRODUCTION............................................................................................................ A-1 ' 1.1 Existing Conditions................................................................................................ A-1 1.2 Proposed Conditions..................................................................................:.......... A-1 ' 2.0 STORMWATER MANAGEMENT STANDARDS ........................................................... A-1 2.1 Standard 1: No New Untreated Discharges........................................................... A-1 2.2 Standard 2: Peak Rate Attenuation ....................................................................... A-1 ' 2.3 Standard 3: Recharge........................................................................................... A-2 2.4 Standard 4: Water Quality..................................................................................... A-2 2.5 Standard 5: Land Uses With Higher Potential Pollutant Loads.............................. A-2 2.6 Standard 6: Critical Areas ..................................................................................... A-2 2.7 Standard 7: Redevelopment Projects and Other Projects Subject to the Standards only to the Maximum Extent Practicable.................. A-2 2.8 Standard 8: Construction Period Pollution Prevention and Erosion and ' Sediment Control...................................................................... A-3 2.9 Standard 9: Operation and Maintenance Plan....................................................... A-4 2.10 Standard 10: Prohibition of Illicit Discharges ....................................................... A-4 ' 3.0 SUMMARY..................................................................................................................... A-4 ' Attachment B Stormwater Computations B.1 -Water Quality Flow Calculations B.2 -TSS Removal Calculation Worksheets ' B.3 -TSS Removal Efficiency Curve (by Hydro International) I ' Attachment C Long-Term Pollution Prevention Plan Attachment D Operation and Maintenance Plan Attachment E Illicit Discharge Statement Attachment F Proprietary Separator Third-Party Evaluation 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 p ort(the Stormwater Re 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 Massachusetts Stormwater Handbook. 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 8' • 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. ' I 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. Stormwatercheck4-1-08•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. i ' Registered Professional Engineer Block and Signature o�y�FplV OF Mq� S ' �S ROBERT 9y U GRIFFIN m CIVIL ' 7F36686 ' 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 Stormwatercheck4-1-08•04/01/08 Stormwater Report Checklist•Page 2 of 8 1 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program 1 Checklist for Stormwater Report 1 Checklist (continued) LID Measures: Stormwater Standards require LID measures to be considered. Document what 1 environmentally sensitive design and LID Techniques were considered during the planning and design of the project: 1 ❑ No disturbance to any Wetland Resource Areas ❑ Site Design Practices (e.g. clustered development, reduced frontage setbacks) 1 ® Reduced Impervious Area (Redevelopment Only) ❑ Minimizing disturbance to existing trees and shrubs 1 ❑ LID Site Design Credit Requested: 1 ❑ Credit 1 ❑ Credit 2 1 ❑ Credit 3 ❑ Use of"country drainage'versus curb and gutter conveyance and pipe 1 ❑ Bioretention Cells (includes Rain Gardens) ❑ Constructed Stormwater Wetlands (includes Gravel Wetlands designs) i ❑ Treebox Filter 1 ❑ Water Quality Swale ❑ Grass Channel 1 ❑ Green Roof ❑ Other(describe): 1 1 Standard 1: No New Untreated Discharges ® No new untreated discharges 1 ® 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. 1 1 Storrnwatercheck4-1-08•04/01/08 Stormwater Report Checklist•Page 3 of 8 1 1 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program 1 Checklist for Stormwater Report 1 Checklist (continued) Standard 2: Peak Rate Attenuation 1 ® 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 1 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 1 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. 1 Standard 3: Recharge 1 ❑ Soil Analysis provided. ❑ Required Recharge Volume calculation provided. 1 ❑ 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. 1 ❑ Static ❑ Simple Dynamic ❑ Dynamic Field' ❑ Runoff from all impervious areas at the site discharging to the infiltration BMP. 1 ❑ 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 1 generate the required recharge volume. ❑ Recharge BMPs have been sized to infiltrate the Required Recharge Volume. 1 ❑ 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 1 ❑ M.G.L. c. 21E sites pursuant to 310 CMR 40.0000 1 ❑ Solid Waste Landfill pursuant to 310 CMR 19.000 ❑ Project is otherwise subject to Stormwater Management Standards only to the maximum extent practicable. 1 ❑ 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. Stormwatercheck4-1-08•04/01/08 Stormwater Report Checklist•Page 4 of 8 i 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. 1 Stormwatercheck4-1-08•04/01/08 Sto"water Report Checklist•Page 5 of 8 ' Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report I ' Checklist (continued) Standard 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. 1 Sto"watercheck4-1-08•04/01/08 Sto"water Report Checklist•Page 6 of 8 1 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands Program 1 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 ❑ 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, t • 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. 1 Stormwatercheck4-1-08•04/01/08 Stormwater Report Checklist-Page 7 of 8 1 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program 1 Checklist for Stormwater Report 1 Checklist (continued) Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control 1 (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. 1 ❑ 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. 1 ❑ The project is covered by a NPDES Construction General Permit but no SWPPP been submitted. The SWPPP will be submitted BEFORE land disturbance begins. 1 Standard 9: Operation and Maintenance Plan ® The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and includes the following information: 1 ® Name of the stormwater management system owners; ® Party responsible for operation and maintenance; 1 ® Schedule for implementation of routine and non-routine maintenance tasks; ® Plan showing the location of all stormwater BMPs maintenance access areas; 1 ® Description and delineation of public safety features; 1 ❑ Estimated operation and maintenance budget; and ® Operation and Maintenance Log Form. 1 ❑ 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) 1 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 1 BMP functions. Standard 10: Prohibition of Illicit Discharges 1 ® The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges; ❑ An Illicit Discharge Compliance Statement is attached; 1 ® NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of any stormwater to post-construction BMPs. 1 Storrnwatercheck4-1-08•04/01/08 Storrnwater Report Checklist•Page 8 of 8 1 1 1 1 1 ' ATTACHMENT A ' PROJECT DESCRIPTION 1 11 1 1 1 1 I ' 1.0 INTRODUCTION ' This stormwater management report is prepared in support of the proposed public park with associated concrete walkways, retaining walls, landscaping and drainage improvements at 289 Derby Street in Salem, MA. The proposed drainage system has been designed to maximize compliance with the Massachusetts Department of Environmental Protection (MA DEP) Stormwater Management Standards. 1.1 Existing Conditions The site is currently being used as a parking area consisting of pavement and compacted reclaimed asphalt pavement (RAP). A small strip of grass borders the western property line. The topography of the site is flat with a slight slope to the south towards the South River Canal. There is no existing on-site drainage system. t Soils within the site are mapped by the Soil Conservation Service as belonging to Urban land which are areas where the soils have been altered or obscured by urban work or structures. According to Tighe & Bond Phase I ESA report dated November 2016, the ' entire site is comprised of approximately 9-ft of fill over silt and clay and estimated seasonal groundwater table is approximately 4-ft to 8-ft below grade. The fill is described by Tighe and Bond to have been placed in the late 1800s. ' 1.2 Proposed Conditions The proposed project is site redevelopment to create a public park with associated ' concrete walkways, retaining walls, landscaping, and stormwater management system. The proposed project improves existing drainage conditions by decreasing the amount of impervious area on-site by replacing approximately 11,200 sq. ft. of pavement and RAP and by installing a drainage system to treat the stormwater runoff from the concrete walkways prior to discharging to the South River Canal. The proposed drainage system for the site includes an area drain, four deep-sump, hooded catch-basins, two drain ' manholes, and a proprietary treatment device (Hydro International First Defense). 2.0 STORMWATER MANAGEMENT STANDARDS ' 2.1 Standard 1: No New Untreated Discharges The project proposes a new discharge to the South River Canal associated with the new drainage on-site system. The stormwater runoff will be treated by the proposed drainage system; therefore, no new untreated discharges to wetlands or waterways are proposed. ' A 3-ft by 5-ft boulder splash pad is proposed at the discharge to prevent erosion and scouring of the South River Canal. 2.2 Standard 2: Peak Rate Attenuation A waiver from Standard 2 is being requested because the project is located in land subject to coastal storm flowage and the stormwater discharge is to the tidal South River ' Canal which is subject to coastal flooding. ' 1 1 ' 2.3 Standard 3: Recharge The post-development annual recharge at the site is greater than the pre-development ' annual recharge because the proposed project removes approximately 11,200 sq. ft. of impervious surfaces and replaces them with pervious landscaped surfaces. For this reason, Standard 3 is met with no new infiltration structures required. ' 2.4 Standard 4: Water Quality The minimum required water quality treatment volume for the project site is the first half ' inch of runoff from impervious surfaces. Based on manufacturer's design guidance, the proposed stormwater treatment system will provide approximately 96% TSS annual removal. The reader is referred to Water Quality Volume Calculations provided in ' Attachment B. The water quality volume is satisfied by the First Defense (FD) proprietary separator ' pretreatment device. The FD directs flow to the proposed discharge into the South River Canal. The proprietary separator was sized to adequately treat the required water quality volume by converting the WQV to the equivalent peak flow rate. The computation for the proposed proprietary separator is provided in Attachment B. A Water Quality Flow (WQF) rate calculation has been performed in accordance with ' MassDEP's guidelines. The calculated WQF rate was used with the manufacturer's TSS Removal Efficiency Curve to estimate the TSS removal. The efficiency calculations were based on third-party evaluations of the First Defense proprietary separators. The ' third-party evaluations are provided in Attachment F. As required by the Stormwater Management Standards, a Long-Term Pollution Prevention Plan has been prepared and can be found in Attachment C. In short, the plan identifies suitable practices for source control and pollution prevention throughout the useful life of the site. ' 2.5 Standard 5: Land Uses with Higher Potential Pollutant Loads The proposed use of this site, public park, is not characterized as a high pollutant load site ' (LUHPPL). Therefore, this standard does not apply. ' 2.6 Standard 6: Critical Areas The site is not tributary to an environmentally-critical area as defined by the Stormwater Management Standards. Therefore, this standard does not apply. ' 2.7 Standard 7: Redevelopment and Other Projects Subject to the Standards only to the Maximum Extent Practicable ' The site is currently fully developed with a parking area. The project is considered a redevelopment. There is no increase of impervious surfaces on-site. The proposed work meets all standards. ' 2 ' 2.8 Standard 8: Construction Period Pollution Prevention and Erosion and Sediment Control ' The proposed project includes a comprehensive set of mitigation measures to protect the existing and surrounding sites from impacts due to construction. Prior to work commencing on-site, there will be a preconstruction conference with the contractor. The purpose of this meeting will be to coordinate the best methods for erosion and sedimentation control and other construction-related issues. The implementation of a comprehensive soil and erosion control plan will occur prior to any construction activities ' within the project area. In general, the following sequence of events will occur: • Erosion and sedimentation control devices will be installed along the edge of the ' down-gradient side of the project area prior to construction as depicted on the site plan. In addition to providing for sedimentation deposition and reducing runoff during storm events, this barrier will limit the work area for the equipment operators. • Erosion and sedimentation control devices will be inspected daily during periods of active construction and bi-weekly during the remainder of the construction period. Sediments will be removed from the barriers as soon as they reach a depth of 6-inches. ' Runoff from the site will be directed through sedimentation control barriers. ' During construction, disturbed areas will be kept to a minimum and vegetative stabilization of these areas will occur as soon as practicable. ' Temporary seeding, mulching, or other suitable stabilization measures will be used to protect exposed critical areas should unprotected soils remain exposed for ' prolonged periods. • The existing catch basins within Derby Street adjacent to the site and proposed ' catch basins will be protected from sediment inflow during construction through the installation of silt sacks or by surrounding them with a barrier of staked haybales. ' Construction activities shall be monitored on-site by the construction supervisor to ensure that the soil erosion and sediment control features are installed properly, maintained, and to evaluate the need for additional erosion control and/or stabilization measures. The ' inspector will perform the following tasks: • Supervise the installation and maintenance of the soil erosion and sediment ' control features. • Evaluate the need for additional soil erosion and sediment control features. ' Scheduled inspections of erosion control features, including construction 3 1 tentrance, haybales, and dust control. ' Supervise and monitor temporary and permanent stabilization activities. 2.9 Standard 9: Operation and Maintenance Plan ' An Operations & Maintenance plan has been provided in Attachment D. The owner(s) of the land is the party responsible for the system operation and maintenance. ' 2.10 Standard 10: Illicit Discharges The submitted Long-Term Pollution Prevention Plan (Attachment C) specifies measures to prevent illicit discharges from entering the stormwater management system. Source ' control and response plans are also specified to prevent illicit discharges from being conveyed through the stormwater management system. ' Since the project site has been previously developed, a signed Illicit Discharge Compliance Statement cannot be provided at this time. A component of the proposed project includes abandoning existing utilities from the industrial buildings and site. Consistent with the Massachusetts Stormwater Handbook, the property owner will submit a signed Illicit Discharge Compliance Statement prior to discharging any stormwater runoff to the post-construction stormwater BMP's. A draft copy of the Illicit Discharge ' Statement is provided in Attachment E. 3.0 SUMMARY The proposed drainage system and site development plans conform to all standards in the MA DEP Stormwater Management Regulations for a redevelopment project. The ' proposed drainage system will treat and remove TSS and other pollutants throughout the project area and minimize erosion. Proper construction, operation and maintenance of the drainage system are critical to its long-term performance. To that end, an Operations ' and Maintenance Plan and a Long-Term Pollution Prevention Plan has been prepared and will be instituted throughout the facilities' life. ' 4 1 II III ATTACHMENT B STORMWATER ' COMPUTATIONS ' - B.1 - Water Quality Flow Calculations B.2 - TSS Removal Calculation Worksheets ' - B.3 - TSS Removal Efficiency Curve ' (by Hydro International) 1 1 1 1 1 1 Griffin Engineering Group, LLC 495 Cabot Street, Suite 2 Beverly, MA 01915 ' Phone: 978-927-5111; Fax: 978-927-5103 WATER QUALITY FLOW CALCULATIONS Job Name: City of Salem Derby Street Job No: Date: 8/3/2017 Designer: MBP Checked By: RHG PROPRIETARY SEPARATORS ' REQ. WATER QUALITY VOLUME (WQV) DEPTH = 0.5 inch(s)of runoff Structure Name Imp. Area A z tc(min.) t,(hrs.) qu Q1.0 Proposed Proposed (sf) (miles ) (csm/in) (cfs) Device Configuration DMH4 (WQS#1) 12,200 0.00044 6.0 0.10 774 0.169 1 4' FD Online Notes: Qo.5 = (qu)(A)(WQV) where: Q0_5= flow rate associated with first 0.5-inch of runoff(WQF) qu = the unit peak discharge in csm/in A= impervious surface drainage area in square miles WQV=water quality volume in watershed inches (0.5) DMI-14 (WQS#1) - FIRST DEFENSE PROPRIETARY SEPARATOR Internal Bypass Configuration ' Bypass Flowrate= 0.7 cfs (Per Manufacturer) WQF =0.17 cfs -> OK 1 ' Page 1 of 1 B.1 INSTRUCTIONS: Non-automated:Mar.4,2008 1. Sheet is nonautomated. Print sheet and complete using hand calculations. Column A and B: See MassDEP Structural BMP Table 2. The calculations must be completed using the Column Headings specified in Chart and Not the Excel Column Headings 3. To complete Chart Column D, multiple Column B value within Row x Column C value within Row 4. To complete Chart Column E value, subtract Column D value within Row from Column C within Row 5. Total TSS Removal= Sum All Values in Column D Locationd South Side of Site Adjacnet to South River A B C D E TSS Removal Starting TSS Amount Remaining BMP' Rate' Load* Removed B*C) Load (C-D) 4 (1) First Defense Proprietary SSeparator(D1144) 96% 1.00 0.96 __J70.04 L 0 0 E 0 UIL Separate Form Needs to be Completed for Each Total TSS Removal = 96% Outlet or BMP Train Project: Salem-289 Derby St Prepared By: MBP 'Equals remaining load from previous BMP (E) Date: August, 2017 which enters the BMP N Hydro International stormwater 4-ft Diameter First Defense Removal Efficiency Curve* 100% — 90% ________r_______ __________.________,________y________,_____ __y________y________,_________ I I -------r - i a601/0 ----------------- r--------r--------1--------x________7_____ iE 50% i W 1 N By-pass flow rate=0.7 ds p y 30% --------r------- I I I I 20% -------- --Note: R utts arc based on the Maine _____4_____ __4________4---------_________ De rtment of Environmental Protection Tes ing Protocols-(Available Upon Request) i 10% ________________ i 0% 0 0.1 .2 0.3 0.4 0.0 0.0 0.7 0.8 0.9 1 Flow rate(cfs) Q = 0.19cfs Q = 0.67 cfs Hydro International - 94 Hutchins Drive - Portland, ME 04102 Tel: (207) 756-6200 - Fax: (207) 756-6212 www.Hydro-International.biz v' 1 1 1 I ' 1 ' ATTACHMENT C ' LONG TERM POLLUTION PREVENTION PLAN 1 1 X11 I,11 1 1 1 ' Long Term Pollution Prevention Plan Standard #4 of the MA DEP Stormwater Management Handbook requires that a Long Term Pollution Prevention Plan (LTPPP) be prepared and incorporated into the long term operation and maintenance plan of the projects stormwater management system. The purpose of the LTPPP is to identify potential sources of pollution that may affect the quality of stormwater discharges and to describe suggested practices to reduce pollutants in stormwater discharges. Good housekeeping practices - The subject property owner is to keep the site in a neat and orderly condition so that pollutants are not conveyed to the storm drainage system. Materials swept, blown or washed into the storm drains can decrease the system's effectiveness and could eventually be conveyed into the South River Canal. Some examples of good housekeeping practices are walkway sweeping, litter control, ' contained trash and cigarette disposal receptacles, and protected material storage areas. The property owner should provide proper training and assign responsibilities to personnel to keep the site in a neat and orderly condition. Provisions for storing materials and waste products inside or under cover—A trash disposal company hired by the owner will pick up waste materials and properly dispose of them at a state approved disposal facility. The proposed trash and recycling receptacles located on-site will be properly maintained and emptied at least once a week. The stormwater drainage system has catchbasins with hooded outlets and deep sumps designed to capture and retain trash, debris, oils, and sediments. Downstream of the ' catchbasins but before the stormwater outfalls, proprietary separator is also installed to further intercept trash, debris, oils, and sediments that might have entered the stormwater drainage system. ' Requirements forroutine inspections and maintenance of stormwaterBMP's- Consistent with Standard 9 of the Massachusetts Stormwater Management Regulations, an Operation and Maintenance Plan has been provided in the Stormwater Management Report. The plan details routine inspection and maintenance of the stormwater BMP's along with associated record keeping forms. ' Spill prevention and response plans— Sources of potential spill hazards include motorized vehicles (lawn mowers) fluids and fuels, pesticides, paints, solvents, and liquid cleaning products. These exterior spill hazards have the potential to enter the stormwater drainage system and are to be addressed as follows: ' 1) Spill hazards of pesticides, paints, and solvents shall be remediated using the Manufacturers' recommended spill cleanup protocol. ' 289 Derby Street August 2017 ' LTPPP-1 ' 2) Vehicle fluid and fuel spills shall be remediated according to local and state regulations governing fuel spills. 3) The property owners shall have the following equipment and materials on hand to address a spill clean-up: brooms, dust-pans, mops, rags, gloves, trash bags, trash containers, and absorptive materials such as sand, sawdust, or kitty litter. III ' 4) Spills of toxic or hazardous materials shall be reported to the Massachusetts Department of Environmental Protection at 1-888-304-1133. ' Provisions for maintenance of lawns, garden and other landscaped areas- It should be a general goal of the subject property owner to achieve a high-quality, well-groomed and stable landscape that evolves throughout the seasons and protects the overall condition ' of the property. All landscaped areas are to be maintained with dense vegetative growth or a layer of mulch so as to minimize sediment transport. Litter and waste is to be removed weekly from the landscaped areas and adjoining walkways and disposed of properly. Requirements for storage and use of fertilizer, herbicides, and pesticides- Fertilizers, ' herbicides, and pesticides are not to be stored on site. Should use of some become necessary, application should be performed by a state licensed contractor in accordance with the manufacturer's label instruction and when environmental conditions are conducive to product application Pet waste management provisions-All pet waste is to be scooped up, sealed in a plastic ' bag, and disposed of properly in the garbage. Pet waste should never be deposited in the stormwater management system for it contains high level of fecal coliform bacteria. Since the site will be a public park, the property owner (City of Salem) will make every ' effort to police patrons to make sure they pick up their pet's waste. Fines will be issued to repeat offenders. A "doggy poop bag" dispenser will be installed on-site. Snow disposal and deicing chemicals— Snow will be stockpiled on-site within open space areas until the stockpile areas become a hazard to the daily operation of the site. At that ' point, snow is to be disposed of at an off-site location. It will be the responsibility of the hired snow removal contractor to properly dispose of transported snow according to the Massachusetts DEP, Snow Disposal Guidelines. It is the responsibility of the snow ' removal contractor to follow these guidelines and all applicable laws and regulations. The property owners will be responsible for the clearing of the walkways. The owner may be required to use a de-icing agent such as salt or potassium chloride to maintain a safe walking surface. The de-icing agent for the walkways may be kept on-site in a designated storage container. De-icing agents are not to be stored outside. ' 289 Derby Street August 2017 ' LTPPP-2 1 1 i 1 1 1 � 1 1 1 ATTACHMENT D OPERATION & 1 MAINTENANCE PLAN 1 i 1 1 1 1 1 1 ' OPERATION & MAINTENANCE PLAN ' System Owner: City of Salem Party Responsible for O&M: ' The owner shall be responsible for the construction phase and the long-term operation and maintenance of the stormwater management system as outlined in this Operation and Maintenance (O&M) Plan. Should ownership of the property change, the ' succeeding owner shall assume all responsibilities for implementing this Operation and Maintenance Plan. ' Emergency Contact Information: • Salem Fire & Police (Emergency) 911 • Salem Fire Department (Business) 1-978-744-6990 ' • Salem Police Department (Business) 1-978-744-0171 • Salem Conservation Commission 1-978-619-5685 ' Salem Health Department 1-978-741-1800 • Salem Public Works Department 1-978-744-3302 • Salem Engineering Department 1-978-619-5673 • Mass DEP (Emergency Response) 1-888-304-1133 • Mass DEP (Northeast Regional Office) 1-978-694-3200 ' Note: The system inspectors should note that drainage pipes, catchbasin, manholes, and treatment devices are considered "confined spaces"subject to strict OSHA standards regarding safe entry. Confined spaces present inherent hazards to workers. Only appropriately trained staff with appropriate safety equipment and monitors may enter confined spaces, and then only with a specific entry permit. Also, this work may pose hazards to workers, such as soft ground, flowing or standing water, snakes and rodents. Again, only appropriately trained staff with the necessary safety equipment should undertake such work. Phase I: Construction Period Operation and Maintenance Plan ' Following is the general sequence of anticipated construction events: 1) Install proposed erosion controls and construction entrance(s). ' 2) Clear site and grub areas as they become necessary. ' 3) Install stormwater management system and other required utilities. 4) Rough grade site. 1 O&Mplan August 2017 ' 1 1 5) Construct retaining walls. 6) Install frame and grates/covers to finish grade. Vacuum all precast drainage structures and install and maintain geotextile filter fabric in all catch basin grates until concrete is installed. ' 7) Install colored concrete walkways. 8) Install curbing landscaping. ' Installing and maintaining comprehensive erosion controls during construction is critical to the protection of the environment and the proposed drainage system. Following is a I ' list of erosion control measures to be taken to protect the existing Salem drainage system, South River Canal, and the proposed drainage system during construction. 1) Install haybales and silt fence downhill of all proposed work area as shown on the Site Plan (Sheet C-1). I ' 2) Install the construction entrance(s) at entrance off of Derby Street. 3) Temporary soil stockpiles shall be encircled with haybales and stabilized with erosion control matting or temporary seeding, depending upon the proposed duration. ' 4) Stabilize all disturbed areas as soon as practicable. Provide temporary stabilization of soil to be exposed for a long period of time (i.e. one month). ' 5) Install erosion control matting on all proposed vegetated slopes greater than 3:1 (H:V). 6) All erosion control measures are to be inspected weekly and after each rainfall ' event. Additional erosion control materials (i.e. haybales, silt fence, filter fabric) are to be kept on site and readily accessible as required. 7) Sediment accumulation up-gradient of the haybales and silt fence greater than 6" in depth shall be removed and disposed of in accordance with all applicable ' regulations. 8) The stabilized construction entrance(s) shall be inspected weekly. The ' entrance(s) shall be maintained by adding additional clean, angular stone to remove the soil from the construction vehicle tires. If soil is still observed leaving the site from construction vehicle tires, adjacent roadways shall be kept ' clean by street sweeping. 9) Dust shall be controlled using on-site water trucks as required. O&Mplan August 2017 ' 2 ' 10) All erosion control measures shall be maintained, repaired or replaced as required or directed by the owner's engineer, the City Engineer, or the City ' Conservation Agent. Part II: Long Term Operation and Maintenance Plan The stormwater management system is a series of catch basins and area drains located at low points within the public park. Stormwater collected by the catch basins and area drains is conveyed through the proprietary treatment device prior to discharging to the South River Canal. To ensure optimal performance of the stormwater management system, routine ' inspections and maintenance should be done at frequencies specified below. An Operation and Maintenance Plan Schedule form is attached documenting compliance. Walkway Surfaces—As part of normal site clean-up and as discussed in the Long Term Pollution Prevention Plan, debris is to be removed from the walkways as it accumulates. Weekly patrolling for litter is recommended. Sand from winter ice ' and traction control should be removed semi-annually (ie. during early spring and late fall). Significant oil leaks should be swept up and disposed of using oil-absorbent materials as they are discovered. Any oil spills or leaks that reach ' the catch basins must be reported to the Massachusetts DEP oil spill hotline. Catchbasins & Drain Manholes - Remove the grate or cover and visually inspect t for corrosion and structural damage. Inspect pipe inlets and bottoms for signs of infiltration or inflow. The grate or cover and hoods on the catch basins should be inspected on a quarterly basis during the first year and semi-annual thereafter. Cleaning of the catch basins should be done on a yearly basis and by a vacuum truck or clamshell. The contractor is to take care to avoid damaging the catchbasin hood. While cleaning, if a layer of oil is observed floating on the water ' surface, place an oil-absorbent pillow on the surface, allow to soak and remove. Repeat this process until the oil layer is removed. Alternatively, have the oil layer pumped out by a licensed disposal contractor and appropriately disposed of. The oil absorbent pillows must be drummed for disposal by a licensed disposal contractor. ' Area Drains— Remove the grate and visually inspect for corrosion and structural damage. The grate and replaceable filter bags should be inspected on a monthly ' basis during the first year and quarterly thereafter. Cleaning the area drain sumps should be done on a yearly basis. The contractor is to take care to avoid damaging the area drain. ' First Defense Stormwater Treatment Device—A copy of the manufacturer's Operation & Maintenance Manual is provided at the end of this section which ' contains the required operation and maintenance procedures for the treatment O&Mplan August 2017 ' 3 ' devices. The devices should be inspected for corrosion and structural damage on a quarterly basis during the first year and semi-annually thereafter. The device ' also should be cleaned on a yearly basis and in accordance with the manufacturer's procedural recommendations. Snow Storage Area —The parking lot has been designed with snow storage areas along the edges while maintaining reasonable travel lanes and parking areas. In the event of significant snow accumulation, snow can be placed in the grassed ' area in the southerly portion of the site. Debris from melted snow shall be cleared form the site and properly disposed of at the end of the snow season or no later than May 15th. 1 O&Mplan August 2017 4 1 lroft�F ional 1 . rr� 1 v � �r { Y 1 1 Operation and Maintenance Manual 1 1 1 1 First® Defense Stormwater Solutions 1 Vortex Separator for Stormwater Treatment Turning Water Around ...® 1 1 Page 12 First Defense®Operation and Maintenance Manual i Table of Contents ' 3 First Defense®by Hydro International -Benefits of the First Defenses ' -Applications -First Defense®Components ' 4 Operation -Introduction ' -Pollutant Capture and Retention -Wet Sump -Blockage Protection 4 Maintenance -Overview ' -Determining Your Maintenance Schedule 5 Maintenance Procedures -Inspection -Floatables and Sediment Cleanout 8 First Defense®Installation Log ' 9 First Defense®Inspection and Maintenance Log 1 ' COPYRIGHT STATEMENT:The contents of this manual,including the graphics contained herein, are intended for the use of the recipient to whom the document and all associated information are directed. Hydro International plc owns the copyright of this document,which is supplied in confidence. It must not be used for any purpose other than that for which it is supplied and must not be reproduced, in whole or in part stored in a retdeval system or ' transmitted in any form or by any means without prior permission in writing from Hydro International plc. First Defense®is a trademarked hydrodynamic vortex separation device of Hydro International plc.A patent covering the First Defense®has been granted. ' DISCLAIMER: Information and data contained in this manual is exclusively for the purpose of assisting in the operation and maintenance of Hydro International plc's First Defense®. No warranty is given nor can liability be accepted for use of this information for any other purpose. Hydro International plc has a policy of continuous product development and reserves the right to amend specifications without notice. ' Hydro International(Stormwater),94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com 1 Page 13 First Defense®Operation and Maintenance Manual ' First Defense° by Hydro International ' Capturing more than 25 years of separation design Benefits of the First Defense" experience, the First Defense®is Hydro International's latest • Compact and flexible design ' addition to its family of hydrodynamic vortex separators -Can be used as a catch basin inlet and directional intended for stormwater applications. It has been developed change manhole with ease of installation and maintenance at the forefront -Optional one or two inlets without sacrificing performance or design flexibility. -Does not require a bypass structure ' • Hydrodynamic Vortex Separation All internal components are housed in either a 4-ft or 6-ft -Extended and structured flow path diameter precast manhole that is designed to withstand traffic -Minimal headloss ' loads. Each model can be used as a catch basin inlet or -Reduces turbulence and re-suspension -Reverse-flow outlet intake prevents short-circuiting standard manhole with solid cover so that runoff can enter -Improved efficiency for all flows ' from an overhead grate, inlet pipe or both without diminishing • Delivered Pre-assembled for easy and fast installation performance. • Simple to inspect and maintain • Independently verified The First Defense®has internal components that are ' designed to generate rotational flow within the device Applications without requiring a tangential inlet. Flow within the precast New developments and retrofits chamber is controlled to prevent turbulence and its unique Utility yards ' reverse-flow outlet intake ensures a longer retention time Streets and roadways by preventing short-circuiting. An internal bypass prevents Parking lots high flow re-suspension and washout and eliminates the Pre-treatment for filters, infiltration and storage ' need for additional bypass structures. The internals can Industrial and commercial facilities easily be adjusted to change the angle between the inlet Wetlands protection and outlet for storm drain directional changes and dual inlets I ' can be accomodated in most cases. This simplifies grading and site design so that flow can be conveyed from isolated locations within the same site without increasing the number 1 of structures. For removal of fine sediment and associated pollutants, ' oil spills,trash and debris,the first choice in stonnwater ®� treatment systems is the First Defense®. ' First Defense'Components a3Q 1. Built-In Bypass 2. Inlet Pipe t 3. Inlet Chute . 4. Floatables Draw-off Port(not pictured) 5. Outlet Pipe 6. Floatables Storage 7. Outlet ChuteG 8. Sediment Storage ,e r. 1 Page 14 First Defense®Operation and Maintenance Manual = z� 7 � ' Operation Maintenance Introduction Overview The First Defense®operates on simple fluid hydraulics. It is self- The First Defenses protects the environment by removing a wide activating, has no moving parts, no external power requirement range of pollutants from stormwater runoff. Periodic removal of ' and is fabricated with durable non-corrosive components. these captured pollutants is essential to the continuous, long- No manual procedures are required to operate the unit and term functioning of the First Defense®. The First Defense®will maintenance is limited to monitoring accumulations of stored capture and retain sediment and oil until the sediment and oil pollutants and periodic clean-outs. The First Defense®has storage volumes are full to capacity. When sediment and oil been designed to allow for easy and safe access for inspection, storage capacities are reached,the First Defense®will no longer monitoring and clean-out procedures. Neither entry into the be able to store removed sediment and oil. Maximum pollutant ' unit nor removal of the internal components is necessary for storage capacities are provided in Table 1. maintenance,thus safety concerns related to confined-space- entry are avoided. 1 Pollutant Capture and Retention The internal components of the First Defense®have been .;,_,__ designed to optimize pollutant capture. Sediment is captured z^ I ' and retained in the base of the unit,while oil and floatables are ' stored on the water surface in the inner volume. The pollutant s storage volumes are isolated from the built-in bypass chamber ' to prevent washout during high-flow intemally-bypassed storm events. Accessories such as oil absorbent pads are available for - E Max Oil oil t " Storage Depth enhanced oil removal and storage. Due to the separation of the t oil and floatable storage volume from the outlet,the potential for washout of stored pollutants between clean-outs is minimized. Wet Sump ' The sump of the First Defense®retains a standing water level ar between storm events. The water in the sump prevents stored Sediment .;i� Sediment ' sediment from solidifying in the base of the unit. The clean- t tr.-- Storage out procedure becomes more difficult and labor intensive if the system allows fine sediment to dry-out and consolidate. Dried sediment must be manually removed by maintenance crews. This is a labor intensive operation in a hazardous environment .`.i Fig.l Pollutant storage volumes in the First Defense®. ' Hydro International (Stormwater), 94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com 1 I1 � Page 15 First Defense®Operation and Maintenance Manual 1 ' The First Defense®allows for easy and safe inspection,monitoring Inspection and clean-out procedures. A commercially or municipally owned Inspection is a simple process that does not involve entry into the ' sump-vac is used to remove captured sediment and floatables. First Defense®. Maintenance crews should be familiar with the Access ports are located in the top of the manhole. First Defense®and its components prior to inspection. Maintenance events may include Inspection, Oil & Floatables ' Removal, and Sediment Removal. Maintenance events do not Scheduling require entry into the First Defense®, nor do they require the • It is important to inspect your First Defense°every six months internal components of the First Defense®to be removed. In the during the first year of operation to determine your site-specific ' case of inspection and floatables removal, a vactor truck is not rate of pollutant accumulation. required. However, a vactor truck is required if the maintenance event is to include oil removal and/or sediment removal. • Typically, inspection may be conducted during any season ' of the year. Determining Your Maintenance Schedule The frequency of cleanout is determined in the field after Recommended Equipment ' installation. During the first year of operation, the unit should be • Safety Equipment and Personal Protective Equipment inspected every six months to determine the rate of sediment and (traffic cones,work gloves,etc.) floatables accumulation. A simple probe such as a Sludge Judge® can be used to determine the level of accumulated solids stored in • Crow bar or other tool to remove grate or lid ' the sump. This information can be recorded in the maintenance log(see page 9)to establish a routine maintenance schedule. • Pole with skimmer or net ' The vector procedure, including both sediment and oil/flotables • Sediment probe(such as a Sludge Judge®) removal, for a 6-ft First Defense® typically takes less than 30 minutes and removes a combined water/oil volume of about 800 • Trash bag for removed floatables ' gallons. • First Defense®Maintenance Log Table 1. First Defense®Pollutant Storage Capacities and Maximum Cleanout Depths ' otal Oil Storaq- ­ e otalSeclirn Sedimentquid •-a • .•- • -P • • -d ' g. •. g. 4 180 <23.5 202 26 202-342 ' 6 420 <23.5 626 36 626-1,046 NOTE ' The total volume removed will depend on the oil accumulation level. Oil accumulation is typically much less than sediment, however removal of oil and sediment during the same service is recommended. 1 Page 16 First Defense®Operation and Maintenance Manual ' Inspection Procedures -------- ---- ------� ...._ ___-_. -. 1. Set up any necessary safety equipment around the access ' port or grate of the First Defense®as stipulated by local ordinances. Safety equipment should notify passing pedestrian and road traffic that work is being done. aYVti 2. Remove the grate or lid to the manhole. 3. Without entering the vessel, look down into the chamber to ° inspect the inside. Make note of any irregularities. Fig.2 shows the standing water level that should be observed ' 4. Without entering the vessel, use the pole with the skimmer net to remove floatables and loose debris from the outer annulus of the chamber. M s 5. Using a sediment probe such as a Sludge Judge®, measure CAUTION! ty yj t; li AVOID INLET CHUTE the depth of sediment that has collected in the sump of the ' vessel. y 6. On the Maintenance Log (see page 9), record the date, unit location, estimated volume of floatables and gross debris � . 1 removed, and the depth of sediment measured. Also note any apparent irregularities such as damaged components or blockages. 7. Securely replace the grate or lid. 8. Take down safety equipment. -` 9. Notify Hydro International of any irregularities noted during --- - — -- - ' inspection. Fig.2 Floatables are removed with a vactor hose. Floatables and Sediment Cleanout ' - Floatables cleanout is typically done in conjunction with sediment Recommended Equipment removal. A commercially or municipally owned sump-vac is used . Safety Equipment(traffic cones,etc) to remove captured sediment and floatables(Fig.2). ' • Crow bar or other tool to remove grate or lid Floatables and loose debris can also be netted with a skimmer and pole. The access port located at the top of the manhole . Pole with skimmer or net(if only floatables are being removed) provides unobstructed access for a vector hose and skimmer ' pole to be lowered to the base of the sump. • Sediment probe(such as a Sludge Judge®) Scheduling • Vector truck(flexible hose recommended) • Floatables and sump cleanout are typically conducted once . a year during any season. • First Defense®Maintenance Log • Floatables and sump cleanout should occur as soon as possible following a spill in the contributing drainage area. ' Hydro International(Stormwater),94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com 1 Page 17 First Defense® Operation and Maintenance Manual Floatables and sediment Clean Out Procedures 1. Set up any necessary safety equipment around the access *, ' port or grate of the First Defense®as stipulated by local ordinances. Safety equipment should notify passing pedestrian and road traffic that work is being done. - h ` 2. Remove the grate or lid to the manhole. i ' 3. Without entering the vessel, look down into the chamber to 4 inspect the inside. Make note of any irregularities. Y ' 4. Remove oil and floatables stored on the surface of the water ' with the vactor hose(Fig.2)or with the skimmer or net(not ` pictured). . ' ' ' 5. Using a sediment probe such as a Sludge Judge®, measure CAUTIONS �'[' ; the depth of sediment that has collected in the sump of the AVOID INLET CHUTE 4 t�1 vessel and record it in the Maintenance Log (page 9). 6. Once all floatables have been removed, drop the valor hose to the base of the sump. Vactor out the sediment and gross debris off the sump floor(Fig.3). 7. Retract the vactor hose from the vessel. ' 8. On the Maintenance Log provided by Hydro International j record the date, unit location,estimated volume of floatables and gross debris removed,and the depth of sediment ' measured. Also note any apparent irregularities such as damaged components, blockages,or irregularly high or low water levels. Fig.3 Sediment is removed with a vactor hose I ' 9. Securely replace the grate or lid. tMaintenance at a Glance Activity Frequency ' Inspection -Regularly during first year of installation -Every 6 months after the first year of installation ' Oil and Floatables -Once per year,with sediment removal Removal - Following a spill in the drainage area t Sediment Removal -Once per year or as needed - Following a spill in the drainage area NOTE: For most cleanouts it is not necessary to remove the entire volume of liquid in the vessel.Only removing the first few ' inches of oils/floatables and the sediment storage volume is required. H l/ r® International o First Defense® Installation Log ' HYDRO INTERNATIONAL REFERENCE NUMBER: ' SITE NAME: SITE LOCATION: OWNER: CONTRACTOR: ' CONTACT NAME: CONTACT NAME: ' COMPANY NAME: COMPANY NAME: 1 ' ADDRESS: ADDRESS: TELEPHONE: TELEPHONE: ' FAX: FAX: INSTALLATION DATE: MODEL SIZE (CIRCLE ONE): 4-FT 6-FT ' INLET (CIRCLE ALL THAT APPLY): GRATE INLET (CATCH BASIN) INLET PIPE (FLOW THROUGH) 0. Hydro International(Stormwater), 94 Hutchins Drive, Portland ME 04102 0 -0 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com Hydro International First Defense° Inspection and Maintenance Log Date Initials Depth of Sediment Volume of Site Activity and Floatables Depth Sediment Comments I ' and Oils Measured Removed 1 I , Hydro Intemational(Stormwater),94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com 1 1 1 Hydro International(Stormwater), 94 Hutchins Drive, Portland ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com Notes i 1 1 1 - Hydro 1fk International 1 1 What is HX? HX is Hydro Experience, it is the essence of Hydro. It's 1 interwoven into every strand of Hydra's story, from our products to our people,our engineering pedigree to our approach to business and problem-solving. 1 HX is a stamp of quality and a mark of our commitment to optimum process performance.A Hydro solution is tried, tested and proven. 1 There is no equivalent to Hydro HX. r 1 1 T° Stormwater Solutions 94 Hutchins Drive Portland, ME 04102 Tel: (207)756-6200 Fax: (207)756-6212 stormwatednquiry@hydro-int.com www.hydro-int.com Turning Water Around...® FD O+M 81209 1 1 ' ATTACHMENT E ' ILLICIT DISCHARGE STATEMENT 1 1 1 1 1 1 1 ILLICIT DISCHARGE COMPLIANCE STATEMENT ' I verify that no illicit discharges exist on the site and through the implementation of a pollution prevention plan measures are set forth to prevent illicit discharges from entering the stormwater management system. ' Signature Print Name Date Title Company Signature Print Name Date Title Company Signature Print Name Date ' Title Company 1 i 1 1 1 1 i it 1 1 ATTACHMENT F 1 PROPRIETARY SEPARATOR THIRD-PARTY EVALUATION FOR FIRST DEFENSE � 1 1 � 1 1 1 1 Hydro International stormwater s t o r m w a t e r 1 www . hydro - internationaI . biz l First Defense° Performance Evaluation 1 1 For submission to the Massachusetts Stormwater Technology Evaluation Project (MASTEP) 1 Stormwater Technology Clearinghouse ' February, 2011 1 1 i 1 1 Hydrol International s t o r m w a t e r ' First Defense® Performance Evaluation ' Summary Hydro International successfully completed First Defense® laboratory testing to assess washout retention and SSC/TSS removal efficiency. Test procedures were based on NJDEP and WI i , DNR protocols. Performance evaluation included varying flow rates up to 200% of the Maximum Treatment Flow Rate (MTFR) and varying influent concentrations using OK-110 silica sand, with 50% pre-loaded sediment sump. Positive removals were achieved for all flows and concentrations, with greater than 70% SSC/TSS efficiency based on the NJDEP weighted removal efficiency calculation method. Non- detectable (<4 mg/L) SSC and TSS effluent concentrations and over 90% sediment retention indicated that no detectable washout had occurred. These findings indicate that washout would be minimal even with a larger MTFR or a shallower ' sump design. Alternatively, it is reasonable to expect that finer particle sizes with lower settling velocities would be retained and not washed out at the tested flow rates. 1 l� ' OUTLET BYPASS � INLET d . FLOATABLES STORAGE INLET CHUTE OUTLET CHUTE FLOATABLES DRAW-OFF-PORT SEDIMENT STORAGE Figure 1: First Defense®- Internal components and flow path ' ©2011 Hydro International Performance Evaluation — First Defense® ro !Monal stormwoter Introduction The First Defense® is an enhanced vortex separator designed to remove floating and settleable pollutants commonly found in stormwater runoff. A key feature of the First Defense is an internal Bypass Chute (Figure 1) that allows treatment without requiring additional flow-diversion ' structures and prevents scour velocities from re-suspending captured pollutants. The MTFRs are 0.7 cfs and 2.2 cfs for the 4-ft and 6-ft diameter models, respectively. Internal weirs are set to ensure all flows up to the MTFRs can be treated without bypass. This laboratory-based test program was conducted to evaluate the overall system performance while accounting for ' variable inlet concentrations and sediment retention over a wide range of loading rates. Test Objectives The First Defense was tested utilizing protocols that met or exceeded the most recent recommendations by testing authorities, including NJDEP and WIDNR. Objectives included: ' • Determine the MTFR using washout as the limiting factor. • Quantify washout at 125% and 200% of the MTFR by measuring the maximum effluent ' concentration and maximum allowable reduction in sump load. • Determine the Suspended Sediment Concentration (SSC) and Total Suspended Solids (TSS) removal efficiency for inlet concentrations of 50 mg/L, 100 mg/L, and 200 mg/L at 25%, 50%, 75%, 100%, and 125% of the MTFR, with the sump filled to 50% of the maximum storage volume. • Determine the weighted removal efficiency based on the calculation method described ' in the NJDEP protocol for laboratory testing of hydrodynamic sedimentation devices. Provide independent witnessing during testing to validate and confirm procedures described and followed in this report. Validate TSS and SSC analytics by outsourcing samples to an independent, state- certified laboratory. In an effort to satisfy regulations that require results reported according to TSS procedures, results of this study included both TSS and SSC analysis. Recent settleable solids performance evaluations are reporting percent removal of SSC with a general consensus that SSC methods can improve the accuracy and repeatability of measurements for samples that have relatively high sediment settling velocities. ©2011 Hydro International Performance Evaluation —First Defense® Page 2 of 8 FlX ro ' International stormwafer Test System Description ' The distribution of the test material, US Silica OK-110, is shown in Figure 2. Approximately 20% of the particles are less than 75 pm with the remaining 80% are between 75 and 150 pm. 100 80 r-- - - - ---- - — - - - - — 60 L 80% 75-150 microns Y i U � L 20 ' a -- 20%<75 microns 0 -- --- —� --r-- ' 0 50 100 150 200 250 Particle Size µm Figure 2: Test sand particle size gradation (OK-110) A full-scale First Defense with 4-ft diameter vortex chamber was tested at Hydro International's state-of-the-art hydraulics laboratory in Portland, ME. Clean water from a 23,000-gallon reservoir was pumped using an 8-inch variable Flygt pump at targeted flow rates through a pipe network to the First Defense (see Figure 3). Dosing equipment delivered a slurry of the OK-110 ' test material to the First Defense. Grab samples were collected at the inlet sampling point and effluent pipe. Effluent was discharged back into the reservoir. ©2011 Hydro International Performance Evaluation - First Defense® Page 3 of 8 ' �-lydro International ;tormwaIer ' I Sediment Probe I ' Slurry Mix Bypass Chute � G Effluent Sample Point _. Outlet Chute s Influent Sample Point y a ' R Inlet Chule 3"Sediment False Bottom - '\y, 10"Support Figure 3: Cutaway diagram of test setup with false bottom, sediment probe and internal components Washout Test Procedure ' The sediment storage sump was pre-loaded to 50% maximum storage volume by depositing greater than three inches of OK-110 on a false floor 10 inches from the sump bottom (Figure 3). The sediment depth was measured with a sediment probe at thirteen locations, evenly spaced ' over the sump bottom, and averaged to determine initial sediment depth. Clean water from the reservoir was pumped to the First Defense vortex chamber at the target flow rate of 0.88 cfs for 125% of the MTFR. After the flow had stabilized, water was pumped to the test unit for a period of 15-minutes. At the conclusion of the test period, the sediment depth was re-measured and compared to the initial depth. ' After determining that greater than 90% of the pre-loaded volume remained in the sump, washout testing using effluent sampling was initiated. The pump was restarted at the target flow ' rate of 0.88 cfs, and influent and effluent samples were collected after the flow rate had stabilized. For a test period of 25 minutes, influent and effluent samples were collected at five- minute intervals, resulting in six paired samples, which were analyzed for SSC by ASTM D3977 ' Method B and TSS by APHA SM2540D. The test was repeated for the flow rate of 1.4 cfs or 200% of the MTFR. ' A representative from the University of New Hampshire Stormwater Center observed all of the tests as an independent witness and reviewed data analysis and quality control procedures of the external laboratory used for sample analysis. 0 2011 Hydro International Performance Evaluation — First Defense® Page 4 of 8 1 !Mroi onal ;tcrmwoter Removal Efficiency Test Procedure ' The sediment storage sump was pre-loaded to 50% maximum storage volume by depositing greater than three inches of the test sand on a false floor 10 inches from the sump bottom. Clean water from the reservoir was pumped to the First Defense vortex chamber. The five target flow rates were 25%, 50%, 75%, 100%, and 125% of the MTFR. Background influent 1 1 and effluent samples were collected to ensure clean water supplied from the reservoir did not exceed non-detect concentrations of 4 mg/L for SSC/TSS. A slurry mixture dosing system (see Figure 4) was used to obtain the variable influent concentrations of 50 mg/L, 100 mg/L and 200 mg/L for the target flow rates. The required mass of test sand was mixed with clean water in a 60-gallon barrel to form the slurry, which was continually stirred to keep the mixture in suspension. The slurry was pumped at a constant rate from the mixing barrel to a dosing port located upstream of the First Defense using a peristaltic pump. The first influent sample was collected after displacing three test volumes, or three residence times within the vessel. Four additional influent samples were collected at one- minute intervals. k Slurry Mixer Il ' �60 Gallon Mixing Barrel ' Peristaltic Pump II Iblool PV Figure 4: Slurry Mixture Dosing System The first effluent sample was collected one residence time after collection of the first influent sample. Four additional effluent samples were collected at the same time interval, for a total of five repeats. The test was repeated for three influent concentrations at five flow rates, for a total ' of 150 influent and effluent samples collected for 15 test runs. Dosing was ceased after collection of the last effluent sample. Another set of influent and ' effluent background samples was collected one residence time after the peristaltic pump had stopped and sediment was no longer entering the system. The influent and effluent samples were analyzed for SSC by ASTM D3977 Method B and TSS by APHA SM2540D. 1 ©2011 Hydro International Performance Evaluation — First Defense® Page 5 of 8 ' Hydro ' International stormwater 1 A representative from the University of New Hampshire Stormwater Center observed 20% of the tests as an independent witness and reviewed data analysis and quality control procedures of the external laboratory used for sample analysis. Twenty percent of the SSC samples for the removal efficiency testing were analyzed by an external laboratory and all TSS samples were analyzed by an external laboratory. ' Washout Test Results and Discussion The ability of the First Defense to retain sediment solids was evaluated in two ways: ' 1. Measure the reduction in the sediment sump level prior to and following testing at operating rates of 125% and 200% of the MTFR with the sump 50% pre-loaded, and 2. Measure the effluent concentrations with the sump 50% pre-loaded with sediment at operating rates 125% and 200% of the MTFR. ' The goal of the first part of the washout testing was to demonstrate that less than 10% of the sediment was reduced (i.e. show greater than 90% of the sediment was retained). Sediment depths were determined by averaging the depth measurements taken from 13 sampling locations within the sump. Sampling locations were replicated for each flow rate with the intent ' of monitoring changes in depths throughout the sump. Although the initial sediment depth was approximately three inches as measured from the false floor, additional sediment was deposited throughout the test program resulting in sediment depths greater than three inches. However, ' for both flow rate tests, the difference in average sediment depth prior to and following testing remained the same and all measurements were greater than three inches. The goal of the second part of the test was to demonstrate that effluent concentrations did not ' exceed 10 mg/L at operating rates of 125% and 200% of the MTFR. As seen in Table 1, at 50% of the sediment capacity, the effluent concentrations were below the analytical detention limit of 4 mg/L for both TSS and SSC for flow rates of 125% and 200% of the MTFR. ' Percent of Influent Flow Effluent EMC m /L MTFR cfs SSC TSS 125 0.88 Non detect Non detect ' 200 1.4 Non detect Non detect ' Overall, the First Defense met or exceeded the test requirements to show no measurable effluent TSS or SSC concentrations, as well as retaining greater than 90% of the pre-loaded ' sediment, at both 125% and 200% of the MTFR. 1 ' ©2011 Hydro International Performance Evaluation — First Defense@ Page 6 of 8 i ' Hydro! International >iorrnwoter ' Removal Efficiency Test Results and Discussion Removal efficiency data was based on a total of 150 influent and effluent samples collected from 15 test runs at five target flow rates and three target inlet concentrations. Each test run included five influent and effluent samples that were averaged to determine the test run "event mean concentrations" (EMC) and resulting removal efficiencies for SSC and TSS. All tests were run with sediment pre-loaded to 50% of the sump volume. % Removal ' Percent Target Target EMC m /L Efficient Test of Flow EMC Influent Effluent Run MTFR cfs (mg/L SSC TSS SSC TSS SSC TSS ' 1 25 0.18 50 43 20 2.7 0 94 100 2 25 0.18 100 103 49 6.2 0 94 100 3 25 0.18200 216 114 7.8 10 96 91 ' 4 50 0.35 50 1 55 33 11 6 80 82 5 50 0.35 100 1 107 52 28 14 74 73 6 50 0.35 200 232 98 50 29 78 70 7 75 0.53 50 47 25 23 11 52 56 8 75 0.53 100 105 57 37 26 65 54 9 75 0.53 200 192 126 81 41 58 67 10 100 0.71 50 62 37 28 15 55 59 11 100 0.71 100 123 67 58 33 53 51 ' 12 100 0.71 200 196 111 107 54 45 51 13 125 0.88 50 39 16 21 13 44 19 14 125 0.88 100 112 50 66 36 41 28 ' 15 125 0.88 200 190 104 99 58 48 44 Note: All TSS samples analyzed by external state-certified laboratory. The results from all SSC and TSS test runs with the sump volume greater than 50% full are shown in Table 2. Target flow rates ranged from 25% of the MTFR (0.18 cfs) to 125% of the MTFR (0.88 cfs) and target influent EMC concentrations ranged from 50 mg/L to 200 mg/L. ' Consistent with flow-based separation systems, the results indicate that system performance was dependent on flow rate, with higher removal efficiencies achieved at lower flow rates. In general, the discrete removal efficiencies for the 15 test runs remained positive for flow rates up to 125% of the MTFR, at which point bypass would be occurring. This demonstrates better control over the tested loading rates than conventional gravity-based separators with internal bypass. ' ©2011 Hydro International Performance Evaluation— First Defense® Page 7 of 8 Mydlro rnational ' All samples were included in calculating the removal rates, as there were no observed outliers. Minimal variation was measured between the SSC target influent concentration and the ' measured SSC concentrations. Measured influent TSS concentrations were approximately 50% lower than the target EMC. However, lower TSS measurements are expected for particles having high settling velocities due to the TSS analytical method, and both the TSS influent and ' effluent measurements were consistent with this trend. As a result, the variation of TSS influent concentration relative to the target EMC did not have a significant effect on removal efficiencies. The annual system performance was calculated using the NJDEP method for weighting removal ' efficiency data. The results in Table 3 show that the First Defense will achieve approximately 70% removal of SSC(TSS based on the NJDEP weighted removal efficiency calculation. ' Target NJDEP Average Removal Weighted Removal Flow Weight Efficiency Efficient % MTFR cfs Factor SSC TSS SSC TSS ' 25 0.18 0.25 95% 94% 24% 23% 50 0.35 0.30 77% 79% 23% 24% 75 0.53 0.20 58% 63% 12% 13% 100 0.71 0.15 51% 47% 8% 7% 125 0.88 0.10 44% 32% 4% 3% Treatment Efficient = 71% 70% Washout Testing Conclusions The washout test results showed no measurable washout from the First Defense when 50% of the sump was pre-loaded with OK-110 at flow rates of 125% and 200% of the MTFR. Additionally, washout test results showed sediment retention greater than 90% of the pre-loaded tsediment for both 125% and 200% of the MTFR. Washout testing results also met the NJDEP protocol requirement of less than 10 mg/L effluent ' concentration for both 125% and 200% of the MTFR. In conclusion, the First Defense met or exceeded the test requirements to show no measurable effluent TSS or SSC levels. This implies that a larger MTFR or a shallower sump is possible. Alternatively, it is reasonable to expect that finer particle sizes with lower settling velocities are likely to be retained and not washed out at the tested flow rates. Removal Efficiency Testing Conclusions ' Removal efficiency results from 15 test runs, operating within a flow range of 0.18 — 0.88 cfs showed good correlation between flow rate and removal efficiency for both SSC and TSS. In ' general, removal efficiencies were independent of the inlet concentrations, which ranged from 50 to 200 mg/L. The NJDEP weighted TSS/SSC removal efficiency calculation showed that overall performance was 70% for the First Defense with sediment pre-loaded in the sump to reduce the sump volume by 50%. 1 ©2011 Hydro International Performance Evaluation— First Defense® Page 8 of 8 CITY OF SALEM ASSESSOR'S CERTIFICATION OF ABUTTERS AND PROPERTY OWNERS BOARD/COMMISSION: Conservation Commission PROJECT SITE: 289 Derby St (34_0441_0) DATE: 7/31/2017 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 Wed ds Protection Act 310 CMR 10.05(4)(a))to the parcel(s) of land listed above as the ject site. /� �+ Assessor's Signatur • Date: uilob J Number of initialed pages attached: Once Certified,Return to: Ashley Green, Department of Planning and Community Development h �?8 r $ r N=I a699a-no �n �inoniiiii�z 0 �JP� S ST REST Pa�00J� T C ON G R'E S• ' CONGRESS SIRE E r Q � r F r�� 'wll dry, r � N y� w w Lu r ' 1— , r O I v RY STREET r m C T 3 L1BE - O a Q w r a ( , t r N - a to - T STREET �- LAFA' VETTE W w CENTRAL STREET r < -- ul ul ul w a _ � N O Z O OpG , DODGE STREET COURT :E�eeR €€J EV 8 $E8 Parcel ID: 34-0441-0 Parcel ID:34-0435-0 Parcel ID: 34-0436-0 CITY OF SALEM SALEM CITY OF MASSACHUSETTS ELECTRIC 93 WASHINGTON STREET SALEM, MA 01970 C/O PROPERTY TAX DEPT SALEM, MA 01970 40 SYLVAN ROAD WALTHAM, MA 02451 Parcel ID:34-0440-0 Parcel ID: 34-0442-0 Parcel ID:34-0443-0 SOUTH HARBOR HOLDINGS HESS RETAIL STORES LLC SOUSA JEROME R JR P O BOX 829 C/O HESS CORPORATION C/O SALEM FLATBREAD, LLC SALEM, MA 01970 539 SOUTH MAIN STREET 258 ANDOVER STREET FINDLAY,OH 45840 GEORGETOWN, MA 01833 Parcel ID:35-0260-0 Parcel ID: 35-0264-0 IRISHEA TRUST, LLC SALEM CITY OF 288 DERBY STREET CHARTER ST CEMETERY SALEM, MA 01970 MA BRiLKiIT ' 10 BRICK n rien Cm •,,, \ ,a ,.e CONCRETE / ., 105.1 °° �`'w per nw: 1 vxvEMExr ,n 1 PULKCYZED PxfuENT I A PAKYENT ,n _3a SWTH HARBOR HOLDINGS LLC •'° 285 DERBY ST. PD .m vEurxr +u PIILVEPIZN PI.VEYENi ,., , r1AY MINT J.e .sss LEGEND DRAIN LINE HESS RETAIL WATER UNE STORE 295 DERBY ST. \ SEWER UNE ----G GAS UNE ' E —UNDERGROUND ELECTRIC x —MAIN UNK FENCE w u I .•.+ ••• POST k WAIN FENCE °� ( 1 .°•• .,., ® SEWFR MANHOLE ,,. 1= ,a •a .•,• an NUN O° DRAIN MANHOLE ss, •°^+I I ,••• ..+ © ELECTRIC MANHOLE '° / n Na me ,n •ess (D TELEPHONE MANHOLE oD WATER GATE I ••" ... .... GAS GATE _ _ ,,. a� ,'+, •"• U+ ® CATCH BASIN EK DECIDUOUS TREE 1 v„ NLa RMO PAYMENT 2 FENCE POST 9 ON LIGHT POST ooa PULVERIZED PAVEMENT e$ .RSinas P. PARKING METER CONCRETE V,LKVAV ,n ,ss e +U TYPICAL WOOD PILING CANAL .•N NDTEs: I. ELEVATIONS ARE BASED W NAW OF 1988 DATUM. CONTOUR INTERVAL IS ONE FOOT BENCHMARK -USCSAGS STANDARD TIDAL BENCHMARK - DISK IN SOUTHEAST CORNER rtrtfi OF U.S. CUSTOMS HOUSE. ELEVATION - 12.88'(NAW 1988). E)MTWG SITE PLAN 2. UNDERGROUND UTIUTIES ME SHOWN BASED ON FIELD LOCATIONS, 259 DERBY STREET PLANS OF OPERATING AUTHORITIES. SALEM ME UTIUTIES SHONN W THIS PLAN SHOULD BE CONSIDERED APPROXIMATE MO DIAGRAMMATIC S ONLY. PROPERTY OF UTILITIES AGENCY SHOULD BE HENTNOTFIED i0 NSTRUC RE UNDERGROUND CITY OF SALEM UTIUOES PRIOR i0 COMMENCEIAENT OF CWSTRULROI OR ExCAVARW. GRAPHIC SCALE SCALE 1' 10' JUNE B. 2017 NORTH SHORE SURVEY CORPORATION 1!MOM STREET- SALEM,MA (q FpT) GAIL L. SMITH. PLS Y 85045 1 IucE. 10 R NortNSlereSJrve%p'erlEa,net 97e-744-4800 04M3 l � i` I ®� a Flush Concrete an x � 3 I \ rl xVYI in x.x � p I om re e I r x x I I x Ugh c x x x (3 TotaQv - I Curvew Granite - Stepi h LED x.x o _ Rope Lighting ` - Curved Granite I t _1 Horborwalk Li ht x W ' \ I on Concrete Pad x.x J Reta n n Wall I x olored Con r / -, '^ (2 Total) \ x x n I / x Litter and Rec Ln / r x x rink' a c x.x Receptacles x and Bottle Filer a / Patternwith' r x.x N QQ /�/� aUtter and Rec lin ' _ ,/' G VJ x x Receptacles c / / Oro Inlet Existin Seawall J Catch Qa L.L M Harbor Walk x New Granite Curb by Cit Concrete Paving (NIC.) 11 WN Low-flow Splash Pad h a in x r New Concrete Sidewalk b Cit with Activator and x.x x (NIC.) 5 Flush-mounted Sprays xxx ' Tembo Pipe x.x /� P. ADD.ALTERNATE b2 I Musical Instrument \M - Ganite Wood-Slat Cate to Provide x xx �I Retaini g Wall /LJLL ,/, -' x Granite Block T -"� / �r 1• Wall-mounted Bench. I Access to Future x.x J- 8' Length, Typ. (5 TotaQ x x xxx 2'x3' Granite Pa Floating Dock ' c wcut Line be ween x.x with Engraved Map 1 L J New and Old Concrete - j - Sidewalk pow Existing Street Li ht T 1 Wo r e xxx i I MTI ---� --r V LAWN Portable Toilet Enclosure x -�-- ADD.ALTERNATE #1 x.x I I I Existin Seawall Existin Tree T .` _ Portable Toilet to be installed --- x nDATE: 0)-25-201] n ret Horborwalk seasonally by City ' I and Guardrail SCALEV10'-0• ' - r c ncr x i I Existing Har orxolk Light FILE: DSP+damu,C0Ng . - I OWN BY: JHC,MM CKDBV: CCB PROJ,B: 1709 MATERIALS NOTES MATERIALS LEGEND ADD. ALTERNATES gIGO D T 1. The ion of an Contractor shall verify —__ Atltl. Alternate k1 - Screen Enclosure far Portable Toilet CI�xDp MEN — Property Line } Proposed Pedestrian Light Column 4 ' location of and protect all utilities, Concrete ow- ow asausmounsprays D Atltl. Alternate #2 - LflSplash Pad with Activator and 5 Flush-mounted Ev ptT1pN drainage, and sub-drainage structures. 80pN5TR Proposed Guardrail � Proposed Horborwalk Light NpT Fp �•� Limit of Work Colored Concrete #1 Existing Light ' Proposed Plant Bed I Colored Concrete #2 O Existing Tree 0 OS .0 3a 30 ab LJ PLANTING NOTES A ' 1The Landscape Contractor shall protect all utilities prior to starting I Ait construction I �YI n 2 The Contractor shall supply oil plant materials in quantities sufficient to complete all planting shown on these drawings. �I�t i ylj JI SOD I Q E ' E 3. All plant materials to conform to guidelines established by the ' American Standard for Nursery Stock published by the I l�ltii �y li al n American Assn, of Nurserymen, current edition. as 4. All plant materials to be selected by the Landscape Architect with the Contractor at the nursery. .I d w s o - 1 5. All plants to be located on the site for approval of the Q Landscape Architect prior to planting. �� �� ;� I m o ' P O xe 6. If the plant list does not agree with the planting plan, the >� I c „ plan shall be followed. 6 GT ' 7. The Contractor shall guarantee all plant materials and lawns — m for one year following final acceptance. See Specifications for 'I LJ b conditions of final acceptance. v^ II b 8. All plant beds to receive 3" shredded bark mulch; supply ABI sample for approval of Landscape Architect. _ AG - CVM 9. No substitution of plant materials shall be allowed without MCG AG -I x approval o/ Landscape Architect. PVH _ "'� ECS LL � LSK MCG 1 EC IRRIGATION NOTES 1. Irrigation system to be design/build. Irrigation company and --- design to be approved by Landscape Architect; provide plan for AG II W ' approval, before installation begins. See Specifications, Section EPI 32 60 00. � � r 2. Control box and clock to be approved and shall be sized to LSF 11 W t SG �. provide 100% coverage of all proposed planting beds and lawns. Z- ' Control Box to have a maximum of XX (XX) zones and to be located within the Water Cabinet. 6 GT Q ' 3. 'Pop-up spray heads for use in lawn areas and trees in lawn. )� I o N Q a- 4. 4. Irrigation system to be guaranteed for one (1) year following I Lc fR installation. Contractor to provide first winterization and spring LJ start up. m E Z ' 5. Contractor to provide irrigation sleeves under paved areas. Seal SOD I 2 F all pipe ends and joints tightly. o Z 6- Contractor to provide an "As-Built Plan", which includes sleeve I \ I' \ W < ' locations, zone information and Operation Instructions. 7. Location of rain gauge to be determined in field with Landscape Architect and Owners Representative. Pr a LOw - - - ----- B. Oneirrigation "Zone" shall be used to provide a time-controlled I o - L`" - -- 0) ' valve on the spray feature line, in order to limit spray operation --_I -- CID <a fic al Park hours. 9 Locofation of all irrigation lines must be reviewed with Landscape \ .� 5 TO �_ ---T r Architect Lines must be kept as for as possible from existing I trees, and as close as possible to curbs. I 1 f ' PLANTING LEGEND PLANT LIST TREES ------- Property Line SYM )TY BOTANICAL NAME COMMON NAME SIZE NOTFS DATE: 07-25-2017 GT 12 Gleditsia triacanthos var. marmis Thornless Honeylocust 3.5"-4" C.I. B&B ' �\ TO 5 Thuja occidentalis 'Nigra' Dark American Arborvitae 8'-10' HT B&B SCALE: 1•= 10-0" J\ Existing Tree FILE: o5P-0 b,-BB.Avg PERENNIALS OWN BY: JHC,MM YM QW BOTANICAL NAME MM N NAM 1171 NOT O ABI %X Amsonia 'Blue Ice Blue Ice Blue Star Flower #1 Pot 24" Spacing, 12-15" H. May-Jun CKD BY. CCB ' Proposed Dediduous Tree AC %X Allium 'Glabemoster Globemosler Ornamental Onion #1 Pot 12-18" Spacing, 32" H, May-Jun PROD.#: 1709 Al XX Asclepias incarnala Swamp Milkweed #1 Pot 36" Spacing, 36-48" H, Jul-Aug CVM XX Careopsis vertidllata Threadleof Coreopsis #1 Pot 24" Spacing, 18-24" H, Jun-Aug ECS XX Echinacea 'Cheyenne Spirit' Cheyenne Spirit Coneflower #1 Pot 12-24"Spacing, 12-30" H, Jun-Aug D -sIG0 Proposed Coniferous Tree EP XX Echinacea purpurea Purple Coneflower #1 pot 24" Spacing, 24-60" H, Jun-Aug wrtc N'{ LSF XX Liotris spicata 'Floristan White' Floristan While Spike Goyfeather #1 Pot 18" Spacing, 24-36" H, Jul-Aug QpDLG ' LSK XX Liatris spicata 'Kobold Original' Kobcld Original Spike Gayfeother #1 Pot 12" Spacing, 14" H, Jul-Aug DEV -�0p51Rpp1100 MCG XX Manama 'Jacob Cline' Jacob Cline Bee-Rolm #1 Pot 24" Spacing, 36"H, Jul-Aug Npi Fa6� ® SG XX Solidago rugasa 'Fireworks' Rough-Stemmed Goldenrod #1 Pot 24" Spacing, 36-48" H, Aug-Oct Proposed Perennial Bed GRASSES ' SYM QTY TANI A m C M N NAM N T zo so CHL XX Chasmanthium latifolia Northern Sea Data #1 Pot 36" Spacing, 36" H, Autumn L6 . 0 DC XX Daschampsia tur,'He Tussock Grass #1 Pot 36" Spacing, 18-36" H. Summer PVH %X Panicum virgalum 'Heavy Metal' Heavy Metal Switch Grass #1 Pot 36" Spacing, 48-60" H. Aug-Oct o os +o av I 200' OUTER GRAPHIC SCALE / I I� RIPARIAN +o o s m zo ao CJ U) � "O 0 w N/F { IN FEET ) �� Co C. SOUTH HARBOR HOLDINGS LLC 100' FROM TOP INSTALL WATERPROOF 1 inch = to ft. II 285 DERBY STREET f FFE N, - B E/OLD PAY 11 .00 (+/-) DOWNSPOUT OF COASTAL MEMBRANE AGAINST ti \ P ONE } MAP 34, LOT 440 BANK & 100' EXIST. BUILDING 'S-1 c7 0 12 INNER RIPARIAN WHERE FILL IS II gyp\ 01 TW 10. 3 REQUIRED FFE i0 \ W o I BW 10.03 9.55 - 9.62 \ 0 10.00 0-/-) �� I I 10.0 9.35 9.09 \\ �� �' 12.27 + CONC. CAP \l S� o f r 10.0 10.0 - 8.78 o I -� 7 8. 3 2F m BRICK I I PAVEMENT I , CRUSHED 10.0 j I .91 STONE DRIP 1 I . I I F I EDGE FOR 285 I o � "' I ° DERBY ST. I ' I -3.49 I TW 9.7 I ' ROOF RUNOFF ° I DMH3 I BW 9.7 RIM=9.94 `09.8 0 cn a 1 I II \ (PRE-SET) TW 9 1440 ! 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I(OUT)=4.05 I ' SPLASH PAD Z PRE-SET ' CONNECT TO / \ " P 09, I N (PRE-SET) DRINKING o ti / o I D 8.02 STUBBED 3 4' LINE TO / /, /F p } I D12" PVC I I 17-92 / INV(A)=4.24 „ / � 0 / `� %\ "\\ \ D TIDE GATE DISCHARGE W 12 OB WATER SERVICE FOUNTAIN O c� / > b� I S-16.0% II C I I / LOW-FLOW I / I a o ° I NV(B)=4.09 0 �i / I I I- INV=-0.6t tt - INV(C)=3.69 3 A -, (MIN. 5 OF I / { SPLASH PAD \ 0 , C84 30'0 o II I I I I - ' ' / (SEE DETAIL) O 1 8/24/17 ADD WATER LINE, DRINKING A COVER) I \ / \ rn zJ / ( ) u� r^ I w \ 000 / RIM=7.30 I I co SMH ITC 9.3 1,67% I 1.?% /, 1\ /0 1/��\ I� I INV=4.63 I I ' FOUNTAIN, SPLASH PAD, RIM=COVER CB BC (8.80 9.4 ---� I /_ � / 7/ \ > , \ I I I I EXIST. HAND NOT SET RIM=8.601 F S S I I 3 r ) - -- 1 1 \ / a I F - - - I � �` 1 WATER CABINET, LIGHTS, & ° �•� ' _ � rn o o GRANITE BLOCK HOLE INV=2.6t O INV(A)=5.37 - 41 I 1 °// \ ° \ I I //` �_ i / - - - HP 35 ) ° jLu C ' TBR ELECT. LINE Z INV(B)=4.55 - - I I t No. Date Description rn _ _ 1 I _�� ,- , \ of TRANS- II L+J I I HP > ' ui \� / \� l �/ / // �� / \��� \ \ � a ri IWI I I� o II o 9.4-` O / \ i CB2 (30"0) / , i \ / I I 1I }--2.68 Revisions ORMER O _ _ _ \ j7 ./ / HP \ \ II r 9 2 7/ �1 0� � � 3�\ \\ / NV=5.39 / ��o / / +12. �\ \ \ // ` `moo I IC I ' PROP. RAILING PER \ \ %F / \ \ 1 BUIDLING CODE + Lu \ \ / / / i v> I I / / / HP12.5 \ \ /� � p / Z \ \ \ / I WOOD PILE JG I I rn / / �� \� / �� �/ \\ \ F / I o"'-_--- (TYPICAL) .. / � I TC I \ \ \ / p ROBERT II v J 9.24 I 1 � �� I 3 1 I - ice o _ _ � � \ � � \ 1 \ I I -3.09 H m U_ W I \ \ / I 1 r /' �' \ / 1 L1,,2%a w GRIFFIN -+ 3 ' w \ w \� I �, - � �� � � � � \• 8. 2 1 CIVIL y 0 � \ - � I \ U \ / it36686 00 °a o c,ll 9.37 �\ // 0 § \ WATER / / ro I \1 // EROSION II CB �tt z \ TW CABINET / _ - _ / �� 8.051 CONTROL RIM1=8.61 v .4 TW 9.87 �10 1 , / -� o rro I ICB INV=5.99 ZII n -�- _ _ / �90,_ - - _ i / +-3.20 cn c tt _ ' - (NEW)-RIM=8.97 mI. 9.56 10.06 9.64 9.6 i - s 88 - - - - - ' SUMP=6.0 cI CONCRETE 9.38 - - -8.0- - - -- - - II I m 07 WALKWAY ' - - .,. / ' - �-� 8.1 1.8% ■ ■ °1 W -° I APPROX. LOCATION �6 � ' 7'g2 Griffin r! II OF PROP. ELECTRIC �- 8 Engineering a. ' r ,a IIII CABINET N/ 7'92 /JF �" � 3 HESS RETAIL STORES LLC �+8 73 AD1 � >- � , LLC ' 295 DERBY STREET L - E ' G ' E ' N ' D Group, tt II V MAP 34, LOT 4E42 CONCRETE WALKWAY INV=5.5 _\e PROPERTY LINE HISTORICAL HIGH WATER 495 Cabot Street, 2nd Floor PL. BK 397 PL. 17 LL, I g--------- CONTOUR Beverly, MA 01915 w #295 DERBY ST. --- Q m 19.35 SPOT GRADE Tel: 978-927-5111 HESS RETAIL STORE BUILDING Fax: 978-927-5103 PLAN REFERENCES & NOTES: EDGE OF PAVEMENT 1) RECORD OWNER: CITY OF SALEM _ - DEED BK 35640, PG. 89 GENERAL NOTES: 5) GRADES, BOTH EXISTING AND FINISHED, ARE INDICATED ON DRAWINGS. THE LLC THAT WILL - = GRANITE CURB 1) THE CONTRACTOR /S SPECIFICALLY CAUTIONED THAT THE LOCATION AND/OR ELEVATION OF HOLD THE CONTRACT AND/OR ENGINEER ARE NOT RESPONSIBLE FOR EXISTING GRADES SHOWN CONCRETE CURB CITY OF SALEM 2) ESRD RECORD PLANS: PLAN BOOK 397, PLAN 17 THE EXISTING UTILITIES AND STRUCTURES AS SHOWN ON THESE PLANS IS BASED ON THE ON DRAWINGS. CONTRACTOR SHALL CHECK ALL AREAS WHEREIN GRADES ARE SHOWN TO o o CHAINLINK FENCE 289 DERBY STREET RECORDS OF VARIOUS PLANS AND WHERE POSSIBLE, MEASUREMENTS TAKEN IN THE FIELD. SATISFY HIMSELF AS TO ACTUAL CONDITIONS AND INCORPORATE ,ANY DISCREPANCIES DISCOVERED. CONTRACTOR SHALL BE RESPONSIBLE FOR ESTABLISHING ALL CONTROL POINTS E UNDERGROUND ELECTRIC 3) CITY OF SALEM ASSESSORS MAP 34, LOTS 441. THIS INFORMATION /S NOT TO BE RELIED ON AS BEING EXACT OR COMPLETE. THE LOCATION AND MARKINGS NECESSARY FOR THE WORK. PRECAUTIONS SHALL BE TAKEN TO PRESERVE MAP 34, LOT 441 W OF ALL UNDERGROUND UTILITIES AND STRUCTURES SHALL BE VERIFIED IN THE FIELD PRIOR TO MATERIALS OUTSIDE THE LINE OF LIMIT OF WORK IN THE MOST UNDISTURBED CONDITIONS WATER LINE 4) WORK IS LOCATED /N CENTRAL DEVELOPMENT (CG) D/STRICT. THE START OF CONSTRUCTION. THE CONTRACTOR MUST CONTACT THE APPROPRIATE UTILITY POSSIBLE. S SEWER LINE COMPANIES, GOVERNING PERMITTING AUTHORITIES, AND "DIG SAFE" AT LEAST 72 HOURS D DRAIN LINE 5) CITY OF SALEM FEMA FLOOD INSURANCE RATE MAP (MAP #2'5009C0419G, JULY 16, 2014) PRIOR TO ANY EXCAVATION WORK TO REQUEST EXACT FIELD LOCATION OF UTILITIES. THE 6) THE CONTRACTOR SHALL BE RESPONSIBLE FOR DISPOSAL OF ALL WASTE MATERIAL AT AN INDICATES THAT THE SITE IS LOCATED WITHIN A ZONE AE WITH BASE ELEVATION OF 10-FT. ENGINEER OF RECORD SHALL BE NOTIFIED /N WRITING OF ANY UTIL177ES INTERFERING WITH APPROVED SITE. BURIAL OF WASTE MATERIAL ON-SITE IS NOT PERMITTED. fG ----- GAS LINE PROPOSED CONSTRUCTION AND APPROPRIATE REMEDIAL ACTION WILL BE TAKEN BY THE W CATCH BASIN SITE PLAN 6) EXISTING COND177ONS SURVEY BY NORTH SHORE SURVEY CORPORATION ON JUNE 8, 2017 ENGINEER BEFORE THE CONTRACTOR PROCEEDS WITH THE WORK. IT SHALL BE THE 7) THE CONTRACTOR SHALL PROTECT ADJACENT PROPERTIES FROM ON-SITE CONSTRUCTION 0 DRAIN MANHOLE TO ACCOMPANY RESPONSIBILITY OF THE CONTRACTOR TO RELOCATE ALL EXISTING UTILITIES WHICH CONFLICT ACTIVITIES AND REMOVE ANY SEDIMENT OR DEBRIS DEPOSITED THEREON IMMEDIATELY. 7) ELEVATIONS ARE ON THE NAVD88 DATUM. WITH THE PROPOSED IMPROVEMENTS SHOWN ON THESE PLANS. - - - -100- - - - PROP. GRADING NOTICE OF INTENT 8) DRAINAGE GENERATED AS A RESULT OF DEWATERING SHALL BE DISCHARGED TO EXISTING D PROP. DRAIN LINE 8) MASS. DEP RELEASE TRACKING NO. (RTN) 3-15479. INFORMATION REGARDING THIS RTN ON 2) THE CONTRACTOR SHALL BE RESPONSIBLE FOR HORIZONTAL AND VERTICAL CONTROL OF DRAINAGE COURSES WITH PROPER FILTRATION AND EROSION CONTROL MEASURES. DISCHARGE THE MASS. DEP WEBSITE (HTTP://WWW..MASS.GOVIEEA/AGENCIE.SIMASSDEP/CLEANUP/SITES/). ALL SYSTEM COMPONENTS. ONTO PAVEMENT OR PRIVATE PROPERTY SHALL NOT BE ALLOWED' RL RL PROP. ROOF LEADER PROP. WALL FOR FURTHER INFORMATION REGARDING THIS RTN & THE S/TER, REFER TO TIGHE & BOND PHASE 3) SAFETY MEASURES, DAY-TO-DAY CONTROL OF WORK AND CONSTRUCTION METHODS SHALL 9) IF ANY PART OF THIS DESIGN /S TO BE ALTERED IN ANY WAY„ THE ENGINEER AS WELL AS - - _ - - = PROP. CURB Su-e' 1"=10' l ENVIRONMENTAL SITE ASSESSMENT (ESA) DATED NOVEMBER 2016. 3) THE SOLE MEASURES, AY- OF THE CONTRACTOR. THE APPROVING AUTHORITIES SHALL BE NOTIFIED IN WR/TING BEFORE CONSTRUCTION. O DMH PROP. DRAIN MANHOLE Job No.: 9) HISTORICAL WATER LINE SCALED FROM MASS. GIS ONLINE MAPPING TOOL (OLIVER). 10) THE CONTRACTOR SHALL NOTIFY THE MUNICIPAL PLANNING AND ENGINEERING STAFF AT ® CB PROP. CATCH BASIN File Name; p/p/g/t �- 4) IN CASES WHERE LEDGE OR BOULDERS ARE PRESENT, THE ENGINEER WILL NOT BE LEAST 48 HOURS PRIOR TO THE COMMENCEMENT OF CONSTRUCTION. 10) REFER TO CBA LANDSCAPE ARCHITECT PLANS (L2.0 TO L6.0) FOR FUTHER INFORMATION ON RESPONSIBLE FOR ASSURING THE AMOUNT OF ROCK TO BE ENCOUNTERED. ® AD PROP. AREA DRAIN LANDSCAPING MATER/ALS AND PLANTING PLANS. 11) UNLESS OTHERWISE NOTED, COMPACT ALL LAYERS TO 95 9 A40DIFIED PROCTOR. + 10.3 PROP. SPOT GRADE Dgt% 8/11/17 : I 12" DIA. DUCTILE BACKFILL TO SUBGRADE W/ Notes 2 DUMP NOT FOR CONSTRUCTION-CONTACT HYDRO y IRON BEEHIVE CLEAN GRANULAR BACKFILL. ' . 1.MANHOLE WALL AND SLAB STRAPS INTERNATIONAL FOR SITE SPECIFIC DRAWINGS 4 1 THICKNESSES ARE NOT TO FRAME & GRATE FILL 6 MAX. LIFTS. CLEAN GRANULAR BACKFILL SCALE. EACH " 2.CONTACT HYDRO COMPACT TO 95% MOD. PROCTOR NO STONES LARGER THAN 3 6 INTERNATIONAL FORA EXPANSION 1201@ 10.00 - EXPA ,r ( n1 - BOTTOM OF STRUCTURE FILL 6 MAX. LIFTS EL-NATION PRIOR TO 4 rn E RESTRAINT INT 1 11e1n se 9 � PROCTOR e , COMPACT. TO 5 E MOD. P , + R SETTING FIRST DEFENSE - CONC. COLLAR .. _ NYLON. ROPE 2 '. 1 ,i � �� MANHOLE. 5 102 In 85011 - 3.CONTRACTOR TO CONFIRM FLAT WASHERS) 12 AS req'd d I ) RIM,PIPE INVERTS,PIPE DIA AND PIPE ORIENTATION ' BAG DETAIL o O 6 •• :+'• PRIORTO RELEASINGUNIT ..`).- < :- ... :' ,, .. ,. +.,: , 78 In[6.60.0] TO FABRICATION. (INLET OUTLET) -- ��., .. . FROM 1 SUMP SEE REPLACEABLE :.: WATER, SEWER, OR DRAIN: ATE FIRsrlssuE ( INLET . . 12 I GEOTEXTILE FILTER BAG :.•.::: I MU PTH OR �D ---- CB DETAIL rr +r . . : �.:• . ,.,., SET AT M NI M DE ---- 2 .. REVeRE�sloNwsroRYPnoN ("SHORT CATCH-IT ) r: , :,' INVERTS AS INDICATED. A -- -- A a f o° 0 0 0 0 0 0 0 !; Date Scale 2 Min. * 00000.0 0 0 0 451141@-(3.77 R1 ;•' 11/12011 silo,-tb" 6 DIA. SCH40 0 o . ....•.' ;. Drawn Checkad APProved OUTLET ADAPTER EMH MRJ MRJ o 2 ; t Tale INSTALLATION DETAIL , 3 4-FT DIAMETER 12 SUMP - ` o oO : 6" MIN. - L! FIRST DEFENSE DUMP 00001 000 STRAPS 12' DIA: 6" OF 0 0 0 0 00 BOTTOM & SIDES 0in@.00n1 1 REBAR NYLOPLAST CRUSHED BASIN STONE 3/8 CRUSHED STONE SECTION AA GENERAL ARRANGEMENT FOR BAG- e°;seoo se,oeee e; DUMP DRAIN REMOVAL STRAPS OR SCREENED GRAVEL i� BOTTOM OF EXCAVATION C BY 0•e, SILTSA K ATLANTIC DETAIL CAPACITIES: Internacional AREA `DRA N ONSTRUCTION FOR DUCTILE IRON OR RCP, PIPE: TOP. OF STONE IS MID-DEPTH (SPRING LINE) OF CONDUIT. stormwater " < , S - C` Parts List 1.PEAK N FLOW: LO :O.T et ( cfe(170 Its) SCALE: N.T.S.. TREATMENT -•-- FABRICS; INC. OR 2. EDIMNST STORAGE (COTe) << ,. . ... : . .. ITEM SIZE In .DESCRIPTION %3.SEDIMENT STORAGE CAPACITY:4.lw.yd.(0:76 W.m.) APPROVED EQUAL. 1 48 I.D.CONCRETE MANHOLE 4.OIL STORAGE CAPACITY:100 get.(881.Ittem) 94 HUlchas Drive 2 INLET CHUTE FLOATABLES TRAP). Portland,Maine 04162 TYPICAL PIPE BEDDING SECTION 3 : OUTLET CHUTE "ADDITIONAL DE3iGN INFORMATION Tel:(207)75&8200 - � Far.(207)768,8212 CIRCULAR FRAME AND : d 1B INLET PIPE OTHERS 1,MAXIMUM INLET/OUTLET PIPE DIAMETERS:181n, starmwatednqulry@fill-tech.mm SCALE. N.T.S. ( ) .. ` FINISHED . ' 2.MAXIMUM NUMBER OF INLET PIPES:2 " COVER SET AT FINISHED 'S' 98 OUTLET PIPE(BY OTHERS) 3.MINIMUM ANCLE BETWEEN.PIPES:90.DEGREES - GRADE GRADE. SEE NOTE 4. a HIGH FLOW BYPASS < �:. '.. 7 30 FRAME AND COVER(OR GRATE) .. . ; : :..: .; MMdw:a.rMa.,x wb•rWw ax"..WmExrxMhye.Hrxambr.mMaw.mt.mo.rye..ore.bm.aw...rn�wwmnbbrmm�bbr..r•rw.<...MMea✓�a.cnWe.cm�aw CAD ReF : F4GA @2011. °'•mntl..prM.wor.m.nm.cwaeer.woe.eh.ry mrtaro.swmix.mtle=rs.lrotlwawEuaxm womnanmw..m.nan«nun.roxx.mmam.ro•mr+wom.a.rrar.omtlw++a.aan.mx.r, .. moi"1 < +• S: ••: E tlrw.lbEmMMutl°M vrywNx¢Yh^vvry YO�'NSMM wrkmaro MN.yNpnwl(wvnYp�rM1vmtlwMwmWv•uE,MbvmtlM'roabbvNW znmllMwMbttrhlbKoleMiolbieM1[abnglRatlna i e.I,.. .< .. . •: Pro ect No ` CATC BASIN ADJUST TO GRADE Hyem lMemetlonal xrtlro mrw.bMEw�ma.movroxm.nemn.ar«ma.«mx.ucabein w.na.nw•wwinMe.er.aa�an mu.ew..m.hn.v..0.wn.gw.«Mun.a..wxtlama.m..m,ac,n.n<r.Mcw® H mnn.nrorwxnswuwnowm.m Mroom.w tiwroxanpwE v.m.xmer.men..rogm.ma.uunrna.qme n.an,.nxM amrxx.rwmnwwiaxwmim.m.eat Drawing No F4GA Rev. WITH COURSES EROSION CONTROL !.. .. (SEE DETAIL) +, ••d <;. _ S. S OF BRICK FABRIC MIRAFI NO. 12+, 24 . . ( WATER QUALITY STRUCTURE (DMH 4) 100 OR EQUAL). \ / T STAPLE TO POST AT SCALE: N.T.S. 6 O.C. VERTICALLY. NOTES: 2.5' MIN 1. SILT SACKS SHALL BE INSTALLED 4 7�'�STEPS 28" 2"x 2" HARDWOOD IN ALL CATCH BASINS UNTIL POST SILT SACK DRAINAGE AREA HAS BEEN FULLY MIN, LENGTH OF 4' -- 27" STABILIZED. RISER AT 61 MAX, O.C. SCALE: N.T.S. SS BAND 5' Min. CLAMPS s 48rr (U.N.0. DOWNSPOUT. SEE _ 6" „ ARCH. ELEVATIONS 12 DRAIN PIPE 21 FOR LOCATIONS 5" r PIPE SIZES a PER PLAN 1.5' Min, EXCAVATE SHALLOW METAL CLEAT d TRENCH BY HAND & BACK FILL AFTER F----i-4'+ 20 GA. METAL BOOT-----.: S� No. ration INSTALLING FABRIC Date Description BASE t NOTES:::. 1. Tideflex Technologies Series TF-2 or approved equal. DUCKBILL 2 2. Mounting Bands to be stainless steel. Revisions GRADE TIDAL GATE SILT FENCE DUCKBILL TIDAL GATE ° a 2"X 2"x 30" HARDWOOD SCALE: N.T.S. - STAKES IN EACH HAYBALE, DRIVE 6" TO 12' IN GROUND. BRICK MA50NRY OR 6.r 3000 PSI CONCRETE 6" CRUSHED y\.,.-• \ � t � 1 � � �,�� � �r/ I : o RO©ERT.: �'y� STONE BASE J1 GRIFFIN NOTES, 1 1 UV L #36686 4 1. CONCRETE 4,000 PSI MINIMUM AFTER 28 DAYS, `l 2. REINFORCED STEEL SHALL CONFORM TO LATEST ASTM A185 SPEC. 0.12 SQ. \�\ \,\. IN. LINEAL FT. AND 0.12 SQ. IN. BOTH WAYS) BASE BOTTOM. 3. H-20 DESIGN LOADING. ( .� 1 1X� � I I� ,., 10 D' . ry.� l 4. H-20 RATED .CAST IRON FRAME AND COVER. ( 7 1 1 / 12 _. ... .. . .. . . . . . :. ._.. .. - , ,. . .. E . . . . .. . . .. .. . . . . . . . . . . . . :.. . 6"- ROOF LEADER `TO 5: SHEA PRECAST OR APPROVED EQUIVALENT. I ( � l f I RAILING PER DRAINAGE 'SYSTEM 6. TONGUE 8: GROOVE JOINTS SEALED WITH BUTYL RESIN. BUTYL RESIN. � 1 / CONCRETE FEMA 100-YR S=0.01 FT/FT MIN. I WALK BUILDING CODE FLOOD ZONE 10 NOTE. TYPICAL 4` 0 PRECAST DRAIN MANHOLE � � / - TOP of = EL. 10.0 1) PAINT WITH 1 COAT ���� COASTAL BANK EXTERIOR PRIMER AND 2 SCALE: N.T.S. . . . . . .. uriffin COATS OF EXTERIOR ABUT TIGHTLY tX I INHIBITING PAINT TOGETHER ^ EXIST. Englneenng Group, LLC GRATEAND FRAME .SET �, 6 .... .. . .. . . . . .. ... ...... ... ,. "GRANITE . . . . . ... ... .. .-.. . .. r., : :. ., :.. . ... ;. . .. ,;. . . . . .: .. , .,. . . . . :. . . . . P, FINISHED GRADE AT FINISHED HAYBALE BLOCK TYPICAL DOWNSPOUT CONNECTION DETAIL 4 GRADE. SEE NOTE 4. V_ : MHW 4 ,,-..:.. . .. ...... .. . .. .. . . : . .. ....:. .. .::. . . . . .. ..... . :..... .. : .. . :. ... .. . .. .._ . . . . 495 Cabot Street, 2nd Floor ' SCALE. N.T.S. (n EL. 4.2t _ CONC. COLLAR HES 4000 PSI 2"X 2" WOODEN STAKE Beverly, MA 01915 MIN. LENGTH OF 24" „ p EXIST. SEAWALL 6 � 8 -0R 10 DIAMETER . .- _ . ... .... . . .. . , . : . . .. . .: . .. ..:.. ,:.. . . . .. . . . . . . . .. . . . .. ... .. , ._-. . .: .. .. . . .. . . BIODEGRADABLE STRAW +.� 2 12 PVC DRA EXIST. 20"x,20° Tel: 978-927-5111 z r IN ploE--- VOID iiJ SEAWALL WATTLE OR WOOD CHIP 5=16.09 `�. � .--., rax. 978-92i-5103 " MULCH BLOWN INTO VCPIPE --n - r - 2 0 . ..... .. . . .. . :. . . .. . . . ... . .: .. ..... . .. ... . . . . . - ..... ., ... :.. . . . . ._. .. ,..'.. .. .: ... . . . . . . . . . . . . . . .. .. . EXIST.: 2.85 10 P 2 0 BIODEGRADABLE FABRIC DUCKBILL BARREL TIDAL GATE iL�,DERBY ST. SECTION WHEN JOINING TWO TUBE (SILT SOCK) W BUILDING ��, WATTLES/SILT SOCKS, � _ 2 ... . . .. ... . . . . . .... . . . ... _:. :. .:- . . . . .: . ... ., . . :. . . . ... .5.0'. ... . . . . . . .. . . . . .. . . .. . . . .. . . . . CITY OF SALEM EITHER TIGHTLY ABUT BOTH _ INV. 3'x5' BOULDER ENDS AND TIE TOGETHER =III= 1' -0.7t SPLASH PAD �8g DERBY 'STREET _III III II( SING HEAVY TWINE OR - C _4 . . . .. .. ... . . . . . .:: . .::. .. . . . :. .., ...... . . .,. -- _. 3.r OF u HE !�I II MAP '34, LOT 441 PLASTIC LOCKING TIES OR _ -M-LW PEASTONE HOOD -/ L (- -�: - . . 1.5% SLOPE 4 OVERLAP THE ,WATTLES/SILT : = EL -5:3f 10 DIA. TEE, -.•-2 -6 SUMP -6 . .:. .. .., .. . .. . ... .. .. . .. .. .. .. . . -, .: ..... .......... . .. . . . ...... . . . . . .. CAP, & 6" LONG r4„ SOCKS APPROXI 6 FF EL. 10.0t EL: 10.0 VC EXTENSION 3 5+ O.C. SPACING P �_ DISCHARGE SECTION } o ' 8 OR 10" DIAMETER e. , 1.5" DIA. oE�.Q o•w o o . . Q r �ICALE 1 -4 GLUE PVC WASHED Z 21" E . . . poo •w ° BIODEGRADABLE STRAW WATTLE MEMBRANE _:F.4 DETAILS ANGULAR 6" CRUSHED STONE - - - - - - - - - - (20 MIL',THICK STONE � j 1 SECTION VIEW r , Irl-T I I ITL=1IL-TIT T -11 L lIi MIN.) TO BLDG NOTES " FDN 24"-, 1. CONCRETE 4,000 PSI MINIMUM AFTER 28 DAYS. 7 OZ/SY 2. REINFORCED STEEL SHALL CONFORM TO LATEST ASTM A185 SPEC. 0.12 SQ. BASE BOTTOM. NON-WOVEN IN./LINEAL FT. AND 0.12 SQ. IN. (BOTH WAYS) A SG�ffi 1"=10' - GEOTEXTILE 3. H-20 DESIGN LOADING. STRAW WATTLE OR SILT SOCK 4. H-20 CAST IRON GRATE AND FRAME, (4" TALL). " ST DRAIN MANHOLE OR APPROVED EQUIVALENT. 5. E.F. SHEA '30 PRECAST NOTE: CONTRACTOR MAY USE Job N o. 6. TONGUE & GROOVE JOINTS SEALED WITH BUTYL RESIN. BUTYL RESIN. p p EROSION CONTROL EITHER UNLESS SPECIFICALLY.. C- 2 Fie Name PIPI9A CRUSHED STONE DRIP EDGE 30"0 PRECAST CATCH BASIN DIRECTED BY ENGINEER OR SCALE: N.T.S. CONSERVATION COMMISSION. Die• 8 14-/17 SCALE. N.T.S. SCALE: N.T.S. - _ -- - - -- m -- - r GRAPHIC SCALE " 200' OUTER I RIPARIAN 'o o s o so ao U1 „ t.9 w N/F ( IN FEET ) cjc. SOUTH HARBOR HOLDINGS LLC 100' FROM TOP INSTALL WATERPROOF 1 inch = 10 ft. II O ro, FFE 285 DERBY STREET MEMBRANE AGAINST B �E/OLD PAY 11 .00 (+/-) DOWNSPOUT OF COASTAL 1 � MAP 34, L07 440 o Ph ONE I EXIST. BUILDING t BANK & 100' Jo n 12 �\���\\\\y��yl \ INNER RIPARIAN WHERE FILL IS Ii ?i 0L 7 "" TW 10,03 \ \ \ \ 502'41' " REQUIRED FFE ` � I 9.JJ \ 29 W 21 BW 10.03 c 0.97 9 I 9.62 0 10.00 . C w ° ( 10.0 9.35 0 ?2 12:27 CONIC. CAP x < r 78 \\\\ \ \ _ 1r � 10A S.JS 8.45 F C_ �° I 10.0 7.91 c BRI I , PAVEMEN f I ° CRUSHED 1.F/° f °O, ° STONE DRIP , EDGE FOR 285 / ll �.. o W r DERBY ST. oat I I 1 I F-3.49 \ TW 9:7 ROOF RUNOFF I -DMH o MW ,, BW 9.7 A RIM=9.94 9.8- 1 o r� rn a t it ` (PRE-SET) �c'` TW 9.7 o< I I e I IL \\\ I V(A)=3.84 CB 1 r, RIM=9.20 TW 10. n _(v INV(B)= .J iFILLED � � I V(C)=3,69 INV 5'1 NOT ;., 9.7 C VI SS) LE) TW / u nF r-`� t• 10.7 BW / 061,g4 C;. � 1 �, --3.61 A ' s r RECLAIMED PAVEMENT ' 8. 3 I � t TC .9.62 ' ,i. II CB BC (9.12) BW ' LP / 7.86 I / W w I SILT c� F / 9.3 x; I 9.4 / a \ + LP w + ' SACK K / r / DMH1 8.01 r o x 9.4 $s, BW 7.71. 7:91 I 1 BW ,:' TW 10.7 I I RIM=7.44 I I MEAN HIGH J C, / 9.23 L I(A)=4.43 I I I� � c� / -----,. , ., � ,.. / � I ' o WATER LINE Q I / / / I(B)=4.63 7.5 I J EL. 5.0 Z I(C)=4.63 / \BW I / I Us I �9 �� v / r.s° / ' / I(D)=4.63 TOP OF s N / " \ CB3 (30 ) 7 COASTAL BANK D �_ / / I(E)=4.33 / 10 PVC I l D _ 10" PV I / X S=2.0% INV=4.78 L . � ''� ,, D C , / / \ 4.71 I I TC 9.37 1.79;0) DI Il l IIB (8.87 9S7 / RIM=8.95 / ---� / I -4.13 + z ;' b / INV=6.28 RECLAIMED PAVEMENT o I N � � a. I 1 __.__� r s� �. ' / D _C O E I I j I d T I II rn L z MAP 34, LOT 440 -! B A I o' a� 0.574 ACRES / / / Q I DMH4 (FD) I I I CB i ., ' / I 1 I HP r?» RIM=7.7 I I I n' d I �s / ' / /'!/ I(IN)=4.05 �J 3'x5' BOULDER l DMH I SILT I w I / o i +7.52 I O CI I RIM=9.49 SACK II / / �y + I 7. 'D I(OUT)=4.05 II SPLASH PAD I I PRE-SET) � / o G O 12 PVC I I ( / �. 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CONCRETE WA INV=5.5 PROPERTY LINE C C4 Q I 495 Cabot Street 2nd Floor HISTORICAL HIGH WATER , Y1 Pc. ax 3s� P�. f� w - 9 CONTOUR Beverly, MA 01915 i L1 #295 DERBY ST. a { 9.35 SPOT GRADE Tel. 978-927-5111 HESS RETAIL STORE ✓.!r.i✓ilii.%. BUILDING 978-927-5103 PLAN REFERENCES &' NOTES: _ Fax: _ EDGE OF PAVEMENT . 1) RECORD OWNER: CITY OF SALEM DEED BK. 35640 PG. 89 GENERAL NOTES_ 5) GRADES, BOTH EXISTING AND FINISHED, ARE INDICATED ON DRAW/NGS: THE LLC THAT WILL = _ = GRANITE CURB 1) THE CONTRACTOR IS SPECIFICALLY CAUTIONED THAT .THE LOCATION AND,/OR ELEVATION OF . HOLD THE CONTRACT AND OR ENG/NEER ARE NOT RESPONSIBLE FOR EXIST/NG GRADES SHOWN ---- - CONCRETE CURB CITY OF SALEM ON DRAWINGS. CONTRACTOR SHALL CHECK ALL AREAS WHEREIN GRADES ARE SHOWN 'TO ESRD RECORD PLANS. PLAN BOOK 397,, PLAN 17 THE EXISTING UTILITIES AND STRUCTURES AS SHOWN ON THESE PLANS IS BASED ON THE �, g .: ?) SATISFY HIMSELF AS TO ACTUAL CONDITIONS AND INCORPORATE ANY DISCREPANCIES � CHAINLINK FENCE 289 DERBY STREET .: RECORDS OF VARIOUS PLANS AND WHERE POSSIBLE, MEASUREMENTS TAKEN IN THE FIELD. DISCOVERED. CONTRACTOR SHALL BE RESPONSIBLE FOR ESTABLISHING ALL CONTROL ' POINTS E UNDERGROUND ELECTRIC THIS INFORMATION /S NOT TO BE REL/ED ON AS BEING EXACT OR COMPLETE: THE LOCATION MAP 3� , LOT 42F� 3) CITY OF SALEM ASSESSORS MAP. 34, LOTS 441. AND MARKINGS NECESSARY FOR THE WORK. PRECAUTIONS SHALL BE TAKEN TO PRESERVE OF ALL UNDERGROUND UTILITIES AND STRUCTURES SHALL 13E VERIFIED IN THE FIELD PRIOR TO W WATER LINE .MATER/ALS OUTSIDE. THE LINE OF LIMIT OF WORK IN THE MOST UNDISTURBED CONDITIONS CG DISTRICT. THE START OF CONSTRUCTION. THE CONTRACTOR MUST CONTACT THE APPROPRIATE UTILITY POSSIBLE. S SEWER LINE 4) WORK IS LOCATED IN CENTRAL DEVELOPMENT ( ) COMPANIES, GOVERNING PERMITTING AUTHORITIES, AND "DIG SAFE" AT LEAST 72 HOURS D DRAIN LINE PRIOR TO ANY EXCAVATION WORK TO REQUEST EXACT FIELD LOCATION OF UTILITIES. THE 6 THE CONTRACTOR SHALL BE RESPONSIBLE FOR DISPOSAL OF ALL WASTE MATER/AL AT AN 5) CITY OF SALEM FEMA FLOOD. INSURANCE RATE MAP (MAP f/25009C0419G, JULY 16, 2014) ) GAS LINE WITH BASE ELEVATION OF 10-FT ENGINEER OF RECORD SHALL BE NOTIFIED IN WRITING OF ANY UTILITIES INTERFERING WITH APPROVED SITE. BURIAL OF WASTE MATERIAL ON-SITE IS NOT PERMITTED: G N INDICATES THAT THE SITE /S LOCATED WITH/N A ZONE AE W PROPOSED CONSTRUCTION AND APPROPRIATE REMEDIAL ACTION WILL BE TAKEN BY THE ® CATCH BASIN SITE PLAN T - E H CONTRACTOR PROCEEDS WITH THE WORK. l SHALL BE THE 7 THE CONTRACTOR SHALL PROTECT ADJACENT PROPERTIES FROM ON-SITE 'CONSTRUCTION V CORPORATION ON JUNE 8, 2017. ENGINEER BEFORE THE ) 6 EXISTING CONDITIONS SURVEY BY NORTH SHORE SURVEY) Z EXISTING UT/LIT/ES WH/CH CONFLICT ACl/V/TIES. AND REMOVE ANY SEDIMENT OR DEBRIS DEPOSITED ?HEREON /MMED/A TEL Y. � DRAIN MANHOLE TO ACCOMPANY RESPONSIBILITY OF THE TO RELOCATE ALL - - - -10.0= -- - PROP. GRADING WITH THE PROPOSED IMPROVEMENTS SHOWN ON THESE PLANS: NOTICE OF INTENT 7) .ELEVATIONS ARE ON THE NAV088 DATUM. 8 DRAINAGE GENERATED AS A RESULT OF DEWATERING SHALL BE DISCHARGED TO EXISTING ) D . PROP. DRAIN LINE 2 .THE CONTRACTOR SHALL BE RESPONSIBLE FOR HORIZONTAL AND VERTICAL CONTROL OF DRAINAGE COURSES WITH PROPER FILTRATION AND EROSION CONTROL MEASURES. DISCHARGE 8 MASS: DEP RELEASE TRACKING. N0. (RTN) 3-75479. INFORMATION REGARDING THIS RTN ON ) ) COMPONENTS. ONTO PAVEMENT OR PRIVATE PROPERTY SHALL NOT BE ALLOWED. -RL RL- PROP. ROOF LEADER HE MASS. DEP WEBSITE HTTP: WWW.MASS.GOV. EEA AGENCIES/MASSDEPICLEANUP/SITES/). ALL SYSTEM CO ONENT PROP: WALL . SG4L@: 1"=10' REGARDING THIS RTN &` THE S/TER -REFER TO TIGHE & BOND PHASE 9 IF P I ALTERED IN ANY WA THE AS FOR FURTHER INFORMATION ) ANY ART OF THIS DESIGN IS TO BE ALT Y, H ENG/NEER AS WELL 3 SAFETY MEASURES, DAY-TO-DAY CONTROL OF, WORK AND CONSTRUCTION METHODS SHALL PROP. CURB I ENVIRONMENTAL SITE ASSESSMENT ESA DATED NOVEMBER 2016.. � THE, APPROVING AUTHORITIES SHALL BE NOTIFIED IN WRITING BEFORE CONSTRUCTION. ( BE THE SOLE RESPONSIBILITY OF THE CONTRACTOR. DMH PROP. DRAIN MANHOLE Job No. 10 ' R MUNICIPAL PLANNING AND ENGINEERING F T HISTORICAL WATER LINE SCALED FROM MASS GIS ONLINE MAPPING TOOL (OLIVER). ) THE CONTRALTO SHALL NOTIFY THE MUNI EER NG STA F A CB PROP. CATCH BASIN C 9) H/Sr0 / ( 4 IN CASES WHERE LEDGE OR BOULDERS ARE PRESENT,. THE ENGINEER WILL NOT BE LEAST. 48 HOURS PRIOR TO THE COMMENCEMENT OF CONSTRUCTION: ® �-°� P/P/9�t O CBA LANDSCAPE ARCHITECT PLANS (L2.0 TO L6.0 FOR F-UT14ER INFORMATION ON RESPONSIBLE FOR ASSURING THE AMOUNT OF ROCK 70 BE ENCOUNTERED, ® AD PROP. AREA DRAIN LA REFER T ( ) 11 UN OTHERWISE 0 COMPACT LAYERS TO 95 9 MOD/PIED PROCTOR. 10.3 PROP. SPOT GRADE 8/19/17 LANDSCAPING MATERIALS AND PLANTING. PLANS. ) LESS E N TED, C M ACT ALL 0 �-