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0018 COMMERCIAL STREET - CONSERVATION COMMISSION Ito bAb-b-�, ------------------- --------------------- ---C9--------------- ------T- . -- ————————————————————- L -J lCF 1112 F)tch-2&-V Tx� rralO-001B V-01 26'-0' ------------- 1 2 ILIA Egg ff9ml 0 UK— ----------------------- All F-1] Fartial Fir5t Floor Flan Frort Elevation Commercial 5treet (5cheme 02), 1/0' - '-0 ------------------------------------------------------------------------ ------------------------------------------------------------- ------------------------------------------ L -J I Rpf&�.m� 4-10' 10, rra 10-00ci 7Z-2- W 4'-a" tv= . . . . . . . . . .. . . . . . . r i- ———————————— as noted A3.1 Gros6 Section, 3/al' l'-O" Ell crc6c, Se-ctlon, 3/0" 1, F2 -------------------------------------------------------------------------------------------------- - -------------------------------------------------------------- L OIL J r F .0-.G Nt \.Z/l -z Z/l 01-.G UNITED STATES POSTAL SEMACE Sender: Please print your name, address, and ZIP+4 in this box Salem Conservation Commission 120 Washington Street,3rd H Salem,MA 01970 9bA F SENDER: COMPLETE THIS SECTION • Complete items 1,2,and 3.Also complete A. Signature item 4 if Restricted Delivery is desired. x 13 Agent • Print your name and address on the reverse D Addresses so that we can return the card to you. B. ReceiveVby(Printed Name) C Date of Delivery • Attach this card to the back of the mailpiece, I or on the front if space permits. twilw— /a-4 Or D. Is delivery address different from item 1? 13 Yes 1. Article Addressed to: It YES,enter delivery address below: E3 No .��&\1)k%� Gs\� 3. Service Type 29�bertifiecl Mail 0 Express Mall off�b 11 Registered 0 Return Receipt for Merchandise 0 Insured Mail 0 C.O.D. 4. RestActed Delivery?(Extra Fee) 0 Yes 2. Article Number jilO 0000 7176. 5502 (7ransfer from service label) 7005 PS Form 3811, February 2004 Domestic Return Receipt 102595-02-M-1540 ............ UNITED STATES PoWVRRWSz' nit,, WRI -1 0 Sender: Please print your name, address, and ZIP+4 in this box Salem Conservation Commission 120 Washington Street,3rd R Salem,MA 01970 SENDER: COMPLETE THIS SECTION COMPLETE THIS SECTION ON DELIVERY E Complete items 1,2,and 3.Also complete item 4 if Restricted Delivery is desired. 13 Agent E Print your name and address on the reverse 13 Addressee so that we can return the card to you. B. Received by(PAted Nantel I C. Date of Delivery 0 Attach this card to the back of the mallplece, or on the front if space permits. D. Is delivery address different from item 1? 11 yes 1. Article Addressed to: If YES,enter delivery address below: 0 No The Commonwealth of Massachusetts Department of Environmental Protection Northeast Regional Office 3. Service Type 205B Lowell Street Y�Certlflecl Mail 0 Express Mall Wilmington,MA 01887 0 Registered 0 Return Receipt for Merchandise 0 Insured Mail 0 C.O.D. 4. Restricted Delivery?(EKtra Fw) 11 yes 2. Article Number It 7 0 0 5 3 11 (7ransfer firom service label) L -- _ 0�_0000� 7176 5519 PS Form 3811,February 2004 Domestic Return Receipt 102595-02-M-1540 CITY OF SALEM CONSERVATION COMMISSION October 2, 2006 Mr. Nick Wildman River Wharf Realty Trust 18 Commercial Street Salem,Massachusetts 01970 Re: Determination of Applicability-18 Commercial Street, Salem, Massachusetts Dear Mr. Wildman, Enclosed, please find die Determination of Applicability for the above referenced property. The Corrunission has rendered a Negative 5 Determination,which means that your approved project is in an area subject to protection but meets the requirements for an exemption as noted in the Determination of Applicability. To further safeguard the resource area, the Commission has attached some additional conditions to the Determination. If you have any further questions, please feel free to contact me at (978) 745-9595 x 311. Sincerely, Carey Du ues Conservation Agent/Planner Cc: DEP, Northeast Regional Office 120 WASHINGTON STREET, SALEM, MASSACHUSETTS 0 1970 #TEL: 978.745.9595 FAX 978.740.0404 * WWW.SALEM.COM LlMassachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands WPA Form 2 — Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. General Information Important When filling out From: forms on the Salem computer,use Conservation Commission only the tab key to move To: Applicant Property Owner(if different from applicant): your cursor- do not use the River Wharf Reatty Trust return key. Name Name 18 Commercial Street VQ Mailing Address Mailing Address Salem MA 01970 cityfrown Tip Go—do Cityrrown state Zip Code 1. Title and Date(or Revised Date if applicable)of Final Plans and Other Documents: Proposal to Demonstrate Innovative Stormwater Management Retrofit January 13, 2006 Systems at an Urbanized Site Along the North River in Salem, MA Date Determination of Appliciability- 18 Commercial Street Salem, MA Photos rills Date Title Date 2. Date Request Filed: September 18, 2006 B. Determination Pursuant to the authority of M.G.L. c. 131, §40, the Conservation Commission considered your Request for Determination of Applicability, with its supporting documentation, and made the following Determtnation. Project Description (if applicable): The work involves the removal of 1,575 square feet of pavement in the front of the building along Commercial Street(1coated within a Riverfront Area). The asphalt and surface fill are removed, disposed off site and 3"of clean topsoil brought in to establish a fain garden. Granite curbing will be installed along the edge of the bed to form a wheelstop defining the edge of the parking lot The proposed rain garden is described in the RDA and will include a wetland seed mix in addition to live plants suitable for the area. The rain garden will also collect rain from the roof allowing it to infiltrate into the soil. The existing concrete staircase and the wooden handicapped access ramp will be replaced with a metal"rain-through" material to allow rainwater to flow into a rain garden below. Project Locaflon: 18 Commercial Street Salem S"et Address Cityrrown Map 26 Lot 0051 Assessors Map/Plat Number Parcei/Lot Number .peformZdw-w�VIM Page I of 5 40 Massachusetts Department of Environmental Protection -Iqvp� Bureau of Resource Protection -Wetlands WPA Form 2 — Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Determination (cont.) The following Determination(s) !stare applicable to the proposed site and/or project relative to the Wetlands Protection Act and regulations: Positive Determination Note: No work within the jurisdiction of the Wetlands Protection Act may proceed unfit a final Order of Conditions(issued following submittal of a Notice of Intent or Abbreviated Notice of IntenQ or Order of Resource Area Delineation(issued following submittal of Simplified Review ANRAD)has been received from the issuing authority(i.e., Conservation Commission or the Department of Environmental Protection). [1 1. The area described on the referenced plan(s)is an area subject to protection under the Act. Removing,filling,dredging,or aftering of the area requires the filing of a Notice of Intent. [I 2a.The boundary delineations of the following resource areas described on the referenced plan(s)are confirmed as accurate.Therefore,the resource area boundaries confirmed in this Determination are binding as to all decisions rendered pursuant to the Wetlands Protection Act and its regulations regarding such boundaries for as long as this Determination is valid. El 2b. The boundaries of resource areas listed below are not confirmed by this Determination, regardless of whether such boundaries are contained on the plans attached to this Determination or to the Request for Determination. El 3. The work described on referenced plan(s)and document(s) is within an area subject to protection under the Act and will remove, fill, dredge, or alter that area. Therefore, said work requires the filing of a Notice of Intent. El 4. The work described on referenced plan(s)and document(s) is within the Buffer Zone and will alter an Area subject to protection under the Act. Therefore, said work requires the filing of a Notice of Intent or ANRAD Simplified Review(if work is limited to the Buffer Zone). El 5. The area and/or work described on referenced plan(s)and document(s) is subject to review and approval by: Name of Municipality, Pursuant to the following municipal wetland ordinance or bylaw: Name Ordinance or Bylaw Citation wpaftnr.2.d=-w.301/W Page 2 of 6 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands WPA Form 2 — Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Determination (cont.) El 6. The following area and/or work, it any, is subject to a municipal ordinance or bylaw but nPA subject to the Massachusetts Wetlands Protection Act: n 7. If a Notice of Intent is filed for the work in the Riverfront Area described on referenced plan(s) and documengs), which includes all or part of the work described in the Request, the applicant must consider the following alternatives. (Refer to the wetland regulations at 10.58(4)c. for more infornriation about the scope of alternatives requirements): [] Alternatives limited to the lot on which the project is located. 0 Alternatives limited to the lot on which the project is located, the subdivided lots,and any adjacent lots formerly or presently owned by the same owner. El Alternatives limited to the original parcel on which the project is located, the subdivided parcels,any adjacent parcels, and any other land which can reasonably be obtained within the municipality. 0 Alternatives extend to any sites which can reasonably be obtained within the appropriate region of the state. Negative Deteffnination Note: No further action under the Wetlands Protection Act is required by the applicant However, if the Department is requested to issue a Superseding Determination of Applicability, work may not proceed on this project unless the Department fails to act on such request within 35 days of the date the request is post-marked for certified mail or hand delivered to the Department. Work may then proceed at the owners risk only upon notice to the Department and to the Conservation Commission. Requirements for requests for Superseding Determinations are listed at the end of this document. 1. The area described in the Request is not an area subject to protection under the Act or the Buffer Zone. El 2. The work described in the Request is within an area subject to protection under the Act but will not remove, fill, dredge, or alter that area. Therefore, said work does not require the filing of a Notice of Intent C1 3. The work described in the Request is within the Buffer Zone, as defined in the regulations, but will not alter an Area subject to protection under the Act. Therefore, said work does not require the filing of a Notice of Intent, subject to the following conditions(if any). El 4. The work described in the Request is not within an Area subject to protection under the Act (including the Buffer Zone). Therefore, said work does not require the filing of a Notice of Intent, unless and until said work alters an Area subject to protection under the Ad. wpafbMQ.d=- VIM Page 3 d 5 Massachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands WPA Form 2 - Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Determination (cont.) 5. The area described in the Request is subject to protection under the Act. Since the work described therein meets the requirements for the following exemption, as specified in the Act and the regulations, no Notice of Intent is required: �a 31D cm, w� A0_0_ykA Exempt Activity(sme applicable statuatory1regulatori pi�ovisiions) C3 6. The area and/or work described in the Request is not subject to review and approval by: Name of Municipality Pursuant to a municipal wetlands ordinance or bylaw. Name Ordinance or Bylaw Citation C. Authorization This Determination is issued to the applicant and delivered as follows: El by hand delivery on 9 by certified mail, return receipt requested on OcAxf '9 Date Date This Determination is valid for three years from the date of issuance(except Determinations for Vegetation Management Plans which are valid for the duration of the Plan). This Determination does not relieve the applicant from complying with all other applicable federal, state, or local statutes, ordinances, bylaws, or regulations. This Determination must be signed by a majority of the Conservation Commission. A copy must be sent to the appropriate DEP Regional Office(see Attachment)and the property owner(if different from the applicant). Signatures: 441A�','1,47� September 28, 2006 Date �pafarrr,2 dw-w.311105 Paw 4 af 5 ILIMassachusetts Department of Environmental Protection Bureau of Resource Protection -Wetlands WPA orm 2 — Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 D. Appeals The applicant, owner, any person aggrieved by this Determination, any owner of land abutting the land upon which the proposed work is to be done, or any ten residents of the city or town in which such land is located, are hereby notified of their right to request the appropriate Department of Environmental Protection Regional Office(see Attachment)to issue a Superseding Determination of Applicability. The request must be made by certified mail or hand delivery to the Department,with the appropriate filing fee and Fee Transmittal Form (see Request for Departmental Action Fee Transmittal Form)as provided in 310 CIVIR 10.03(7)within ten business days from the date of issuance of this Determination. A copy of the request shall at the same time be sent by certified mail or hand delivery to the Conservation Commission and to the applicant if he/she is not the appellant The request shall state clearly and concisely the objections to the Determination which is being appealed.To the extent that the Determination is based on a municipal ordinance or bylaw and not on the Massachusetts Wetlands Protection Act or regulations, the Department of Environmental Protection has no appellate jurisdiction. wpefomIcIm- 311A)5 Page 5 cd 5 CITY OF SALEM CONSERVATION COMMISSION Determination of Applicability Special Conditions River Wharf Realty Trust 18 Commercial Street, Salem, NIA The Salem Conservation Commission finds this Request for a Determination of Applicability negative so long as the following Special Conditions are met: 1. The applicant shall confirm with the Conservation Agent that there are no sumps present and/or no history of flooding in the basement or crawlspace located at 18 Commercial Street. 2. Erosion controls shall be installed and maintained throughout the construction process and removed only once the area is stabilized. 3. If the Special Conditions are not met the applicant will be required to file a Notice of Intent. 120 WASHINGTON STREET, SALEM, MASSACHUSETTS 01970 *TEL: 978.745.9595 FAx: 978.740.0404 0 WWW.SALEM.COM Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands c-it-y-frown WPA Form I - Request for Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. General lnform�t�ion ������� Important: Whenfillingout 1. Applicant: forms on the River Wharf Really Trust computer, use wgoldsmith@bioengineering.com only the tab key Name E-Mail Address to move your 18 Commercial Street cursor-do not Mailing Address use the return Salem MA 01970 key. City/Town State Zip Code 978-740-0096 ext.507 VQ -P-honeNumber Tax Number(if�applicable) 2. Representative (if any): The Bioengin ering Group, Inc. Firm Nick Wildman nwildman(a)bioengineering.com -Contact-Name E-Mail Address 18 Commercial St Vailing-Address Salem MA 01970 City[Town State Zip Code Phone Number Tax Number(if�appficable) B. Determinations I request the Salem make the following determination(s). Check any that apply: Conservation Commission El a. whether the area depicted on plan(s) and/or map(s) referenced below is an area subject to jurisdiction of the Wetlands Protection Act. El b. whether the boundaries of resource area(s)depicted on plan(s)and/or map(s)referenced below are accurately delineated. c. whether the work depicted on plan(s)referenced below is subject to the Wetlands Protection Act. d.whether the area and/or work depicted on plan(s) referenced below is subject to the jurisdiction of any municipal wetlands ordinance or bylaw of: Salem Name of Mu E] e. whether the following scope of alternatives is adequate for work in the Riverfront Area as depicted on referenced plan(s). wpafo�l.doc Page 1 of 4 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 1 - Request for Determination of Applicability city/Town Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 C. Project Description 1. a. Project Location (use maps and plans to identify the location of the area subject to this request): 18 Commercial Street Salem Street Address city/To V7 .&—0 Parcel/Lot Number b. Area Description (use additional paper, if necessary): The project area is in a heavily industrialized section of Salem along the left bank of the North River. Commercial Street and its neighborhood are characterized by a parge proportion of impervious surfaces which drain directly into the North River. This runoff contributes to impaired water quality from sedimentation and chemical contamination in the River and in Salem Sound. The project was designed as a demonstration of innovative stormwater management by a Massachusetts licensed Professional Engineer and a Certified Professional in Erosion and Sediment Control (CPESC).The CPESC has supervised each stage of the work in progress. c. Plan and/or Map Reference(s): Date Date Title -da—te 2. a. Work Description (use additional paper and/or provide plan(s)of work, if necessary): Please see the attached plan. All areas of work have been stabilized using coir mattress for perimeter control and the site has been graded to collect all runoff in a shallow basin topography(see photo). The work at 18 Commercial Street involves removing 1,575 square feet of pavement in the front of the building (Riverfront Area). The asphalt and the surface fill are removed offsite and 3"clean topsoil brought in to establish a rain garden. Natural granite curbing will be installed along the edge to the bed to form a wheelstop defining the edge of the parking lot. The rain garden will be planted with a welland seed mix from Ernst Conservation Seed and select live plants suitable for the hydrology of a periodically saturated environment. The rain garden will collect rain from the roof and allow it to infiltrate into the soH, entering the North River much more slowly and with having had pollutants and nutrients processed through filtration and uptake. In addition, an area of 1,037 square feet on the side of the building has received soil amendments and a gravel pedestrian path to formalize and improve a favorite neighborhood cut-through to the park. The area has been seeded with a native meadow seed mix and mulched to ensure no erosion during establishment(see photo). The existing concrete staircase to the Bioengineering Group will be replaced with a metal "rain-through" material to allow rainwater to flow into the rain garden below. Similarly, the wooden handicaped access ramp will be replaced with a similar pervious material. Overall, the project will result in reduced impervious surface in the North River watershed with less runoff to the River and Salem Sound. The project also will result in the creation of a diverse dry and wet meadow habitat where there was none existing. This project is being done in coniunction with a neiahborhood beutification Droiect with Servino Salem (see letter). .paforml.doc Page 2 of 4 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Forml - Request for Determination of Applicability City/Town Massachuse I tts Wetlands Protection Act M.G.L. c. 131, §40 C. Project Description (cont.) b. Identify provisions of the Wetlands Protection Actor regulations which may exempt the applicant from having to file a Notice of Intent for all or part of the described work (use additional paper, if necessary). Based on our professional opinion, and in consultation with the NERO Circuit Rider, we are confident that this work is exempt from the Wetland Protection Act under 310 CIVIR 10.02(f), "the conversion of impervious to vegetated surfaces, provided erosion and sedimentation controls are implemented during construction...... The work described in this RDA was designed and overseen by a registered PE and a CPESC using best management practices for construction erosion control. The project is designed to improve the infiltration of stormwater and the water quality in the North River and Salem Sound and has been included in recent EPA and MA Riverways grant application filed in cooperation with Salem Sound Coastwatch and Center for Urban Watershed Renewal (See attached). 3. a. If this application is a Request for Determination of Scope of Alternatives for work in the Riverfront Area, indicate the one classification below that best describes the project. El Single family house on a lot recorded on or before 8/1/96 Single family house on a lot recorded after 8/1/96 El Expansion of an existing structure on a lot recorded after 8/1/96 El Project, other than a single family house or public project, where the applicant owned the lot before 8/7/96 New agriculture or aquaculture project Public project where funds were appropriated prior to 8/7/96 E] Project on a lot shown on an approved, definitive subdivision plan where there is a recorded deed restriction limiting total alteration of the Riverfront Area for the entire subdivision Z Residential subdivision; institutional, industrial, or commercial project Municipal project District, county, state, or federal government project El Project required to evaluate off-site alternatives in more than one municipality in an Environmental Impact Report under MEPA or in an alternatives analysis pursuant to an application for a 404 permit from the U.S.Army Corps of Engineers or 401 Water Quality Certification from the Department of Environmental Protection. b. Provide evidence (e.g., record of date subdivision lot was recorded)supporting the classification above (use additional paper and/or attach appropriate documents, if necessary.) "afo.l.doe Page 3 of 4 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Cityrrown WPA Form 1 - Request for Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 D. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Request for Determination of Applicability and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I further certify that the property owner, if different from the applicant, and the appropriate DEP Regional Office were sent a complete copy of this Request (including all appropriate documentation) simultaneously with the submittal of this Request to the Conservation Commission. Failure by the applicant to send copies in a timely manner may result in dismissal of the Request for Determination of Applicability. Name and address of the property owner: River Wharf Realty Trust Name 18 Commercial St. mallingAddress Salem Cityrrown MA 01970 State Zip Code Signatures: I also undersiiand that notification of Tis Request will be placed in a local newspaper at my expense in accordance wi.th Section 1 n Act regulations. 5( p)(1)oft etlands Protectio bignature of Applicant Dare Signature of Representative(if any) Date mafo"I.doc Pago 4 of 4 If OUR,' d. i Wit t AF tA.-- tti 4� A&I Al Fill 1�iikffz . ........... it I I I _Ix -it 11 1 .ji. yi 'If If if 'fli :1 wt� zi tilt I lf- Lim. If -K MWU tg- ..'sum am... �-�..... Ap Tit 774F i JA I P­X4F` .04 apt ji rill", —7- Z, ICT fir I TIE do SQ M,,V% pip% Tii �rll _1w Fz' Sul%I, !, , 1, —mow Ruh ',Or AV j I M it q F 46 - is TI? I ; x1i ju. its-— fix --tVil t 7v�= siy� _s;------------- .!A.'No gy. WR Of ITi mm n -_1 go if IR - sit �_ Aw I _ .+,, Y4 . 00 Tk 74 17� Fte wo 18 Commercial St. Locus Map bf i Oa �bT lit A n-,j— -F. p, A'. ,t Am ytpl --71R 6 A Feet W*-E 0 100200 400 600 600 1 inch equals 400 feet tT' Request for Determination of Applicability- 18 Commercial Street, Salem, MA A Figure 3-Side of the building showing aggregate path,upland seeding area,and coir erosion control rnat. NoT11M. MUM a X,1" INV servin 9salem September 11, 2006 Ms. Wendi Goldsmith The Bioengineering Group 18 Commercial Street Salem MA 01970 Dear Ms. Goldsmith, Sponsor Committee Mark Tony Danversbank Thank you for your generous donation of$250 to the Serving Salem Community Committee Chair Serve-a-thon! We appreciate your support of the Salem Harbor CDC and applaud Claudia Chuber your community spirit. AkLaughlin Rmanrag Im Laurence C.Harrington As a valued sponsor at the Apprentice level, The Bioengincering Group will be North Share Bank recognized on Us year's Serving Salem T-shirts to be worn by volunteers and in Marry Haub" informational brochures used to recruit volunteers and gather pledges as well as 7hg C%aw Omer&Fmy listed on the Serving Salem Website. You will also be thanked publicly at Serving Nicholas P.Helides Salem. Beverly National Bank John H.Neely We're planning a morning of community service followed by lunch on Saturday, Hmvthorne Associates September 30 from 9 a.m. to I p.m. Teams of volunteers will take part in service Maturcen Safer projects around the city—doing chores for elderly residents, beautifying local Damershank parks, planting bulbs, working on the Salem River Bed, cleaning up the community, and more! We hope to see you at Serving Salem, along with volunteers from The Bioengineering Group. Again,please accept our sincere thanks for your support. Sincerely, Michael Whalen Executive Director Serving Salem Community Sene-a-thon and Fundraiser Organized by Salem Harbor CDC TMIS AGEMY SUPPORTED BY 102 Lafayette SL., Salem, MA 01970 Telephone: (978) 825-4002 Fax: (978) 745-4345 Unitediofty So�md CoRstlt,' Committed to enhancing andprotecting the environmental quality ofSalem Sound and its watershed 201 Washington St.,Suite 9 Salem,MA 01970 978-741-7900 Fax:978-741-0458 Vrate&h5 a Common Pvource www.salemsound.org Eileen Goldberg January 12 2006 Riverways Program/DFG 251 Causeway St, Suite 400 Boston, MA 02114 Dear Ms. Goldberg: Salem Sound Coastwatch (SSCW) enthusiastically supports the Center for Urban Watershed Renewal, Inc.'s grant proposal to install urban stormwater Best Management Practices (BMPs) at 18 Commercial Street in Salem. Salem is an urbanized area with a significant amount of impervious surface. Based on our water quality monitoring results in this area of the North River and Beverly Harbor, stormwater is a significant pollution source. Also, the Ipswich River Watershed is a highly taxed source of municipal water for Salem and a growing North Shore population. Installing innovative BMPs in a visible public area will serve to raise awareness of stormwater and water conservation issues. By educating the public about simple modifications they can make on their own property, such as rain gardens and pervious pavement, stormwater BMPs will catch on. In particular, we hope to attract interest from the business community and developers about way� they can literally "go green". These BMPs are being used with success in many parts of the US and Europe not only to treat stormwater but to create aesthetic and recreational benefits as well. Oftentimes innovative ideas such as these are not seriously considered for implementation until they are demonstrated to work. Currently, there is no local demonstration site such as proposed in this grant proposal. This project will help raise awareness and build confidence in urban stormwater BMPS. Salem Sound Coastwatch will assist with public education and outreach for the project. We have long identified stormwater and water usage as major threats to Salem Sound and its surrounding watersheds. Through our programs, we have experience with public education and outreach on stormwater and other issues and have developed relationships with local municipal officials, the media, local business owners, and area citizens. Salem Sound Coastwatch looks forward to partnering with the Center for Urban Watershed Renewal on this project and hopes that you will find this project worthy of funding. Sincerely, Barbara Warren Executive Director PROPOSAL TO DEMONSTRATE INNOVATIVE STORMATER MANAGEMENT RETROFIT SYSTEMS AT AN URBANIZED SITE ALONG THE NORTH RIVER IN SALEM, MA SUBMISSION TO THE RIVERWAYS PROGRAM OF THE MASSACHUSETTS DEPARTMENT OF FISH AND GAME RFR II)#: RIV-RIFLS-06-1 January 13,2006 The Center For Urban Watershed Renewal, Inc. Charles Steele, Executive Director The Center for Urban Watershed Renewal, Inc. (CUWR) Mission Statement To develop, demonstrate, implement, and promote technology and policy to restore and manage urban watersheds. Urban watershed areas have long been ignored by resource managers as too deteriorated to warrant serious natural resource management attention. As a result,planners, politicians, engineers, and businesses alike have manipulated the landscape with a heavy hand, altering and impacting vegetation, soil, and waterways as convenient, and responding to environmental regulations with equally mechanistic methods. However, the cumulative effect of these actions is depleted ground water supplies, chronically low stream base flows, increased peak flows (which can erode streams or overwhelm piped systems), and the transmission of contaminants directly to receiving waters without treatment. Even the wastewater treatment plants and stormwater collection systems designed to manage these issues are in need of repair, expansion, and modification,which can only occur at great expense. The vegetation, healthy soil, and landforms that once served the function of capturing,buffering, filtering, purifying, and otherwise systematically handling rainfall, nutrients, and pollutants have been eradicated and replaced by structures that are often themselves sources of pollution. The problem is abundantly clear in the form of problem odors, fish kills, beach closings, restrictions on fish consumption, and ugly, neglected waterways that people have learned to avoid. The most effective solutions to restore these degraded resources will include the holistic restoration and enhancement of functional landforms and beneficial natural processes. Even outside of populated urban centers, numerous sites are burdened by industrial impacts due to mining, historic industry,past military use, or waste disposal. These sites often exhibit contamination of soils as well as surface or groundwater. The methods chosen to clean up these contaminants can either improve the ecological productivity of the site, or further impair it. Past strategies for remediation have tended to focus on narrow objectives, sometimes failing to recognize when the remedy is worse than the disease, or when treating only one symptom fails to cure. Many underutilized technologies exist which can treat contaminants using robust biological systems. By using plants, microorganisms, and natural geochemical processes, sites may be cleaned while simultaneously enhancing ecological health and leaving land in prime condition for conservation and recreation. The Center for Urban Watershed Renewal is a 501(c)(3) non-profit environmental advocacy organization. The Center for Urban Watershed Renewal believes that environmental quality, community vitality, and socioeconomic opportunity are deeply connected. Based on that premise, the Center seeks to devise solutions that integrate natural resource management, commercial and residential development, and urban infrastructure. Our goal is to transform stigmatized, underutilized, degraded urban sites into economically viable, ecologically functional, socially valuable amenities. By focusing on Brownfields redevelopment, the Center seeks to avert sprawl, locate jobs near labor, strengthen decaying tax bases, and re-use existing infrastructure. By incorporating green technologies and cutting edge planning with Brownfields re- development,we can bring beauty, accessibility, ecological integrity, and social vitality to those areas most in need. Old industrial sites that were historically or are currently among the worst offenders in terms of watershed impacts (e.g., dams, channelization, filled wetlands and floodplains, elevated runoff volume, and poor water quality) can be converted into havens of treatment,benefit, and sensitivity. We seek to catalyze similar efforts elsewhere by demonstrating and documenting the social, economic, and ecological factors and outcomes. CUWR Focus Topics • Stormwater source reduction . Greenspace and greenways • Riparian restoration a Recreation and natural science • Regional detention ponds/infiltration education zones . Rough and tumble natural play spaces • Treatment wetlands 0 Community gardens • Habitat enhancement . Natural resource based zoning • Phytoremediation N Stormwater utilities • Renewable construction materials 0 Combined sewer separation • Soil reclamation 0 Stream daylighting • Mine and slag drainage 0 Stormwater sewer elintmation • Integrating remedies for air, water, and . TMDL's soil pollution . Municipal composting Past project highlights include: • Conservation of endangered butterfly species on 5000 acre military reservation in Herlong, CA constrained by military use impacts such as unexploded ordinance • Collaboration with US Army Corps of Engineers and DoD Base Realignment and closure office to identify and develop strategies for sites in CA, TX, and IL where site clean-up needs posed threats to special and sensitive habitats • Successful 319 grant funded stormwater management demonstration projects in Salem, MA and Acushnet MA • Collaboration with TPL on the transfer of multiple parcels of land totaling over 55,000 acres where soil remediation, public recreation, and habitat management needs and opportunities exist • Outreach presentation to US Chamber of Commerce to raise consciousness and outline strategies for large and small business to practice improved watershed stewardship PROJECT DESCRIPTION Statement of Problem This project will help "keep water local" by addressing two significant problems. First, the majority of Salem's water supply comes from the Ipswich River Watershed, which is listed on the N/IA Riverways RIFLS Low-Flow Inventory and widely understood to be one of the most stressed rivers in the Commonwealth. The rapid growth of development within the area relying on this watershed has taxed the natural hydrology and caused the river to run dry on occasions'. These dry periods have caused extensive fish kills and other alterations to the ecosysteM2. This project includes the installation of a rainwater collection and use system that will reduce the withdrawal from the Ipswich River Watershed during key months of the year by capturing roof runoff and storing it for toilet flushing. Even with the low-flow toilets recently installed in the building, rainwater harvesting will reduce consumption of Ipswich River water by an estimated 50,000 gallons per year or more. Second, the proposed project will also measurably improve how stormwater enters the local receiving waters. Rivers flowing through heavily urbanized corridors are vulnerable to contaminated stormwater runoff from commercial, industrial, and residential sites. Where natural landscapes once provided and maintained infiltration processes, hardtop surfaces such as asphalt streets, parking lots, and building roofs have created vast quantities of impervious cover. Impervious surfaces eliminate precipitation contact with soils and prevent absorption and storage processes. As a result, groundwater resources contributing to baseflow are diminished, and stormwater runoff occurs almost immediately during a precipitation event. Stormwater runoff collects a variety of contaminants from these impervious surfaces. Vehicles and facilities experience mineral weathering and leak oil and grease. Rooftops collect heat from solar gain plus pollutants and nutrients. Bacteria from fecal matter and trash accumulate from numerous locations. These pollutants have a devastating toll on aquatic ecosystems, with effects ranging from algae blooms and damaged fish gills to anaerobic conditions and reduced reproductive capacity. Massachusetts Riverways Program: http://www.mass.gov/dfwele/river/programs/�ifls/If—ipswich.htm Lang,V.,Abele,R.,and Armstrong, D.,et.al. May 2001.Ipswich River Target Fish Community. The North River in Salem, MA exhibits characteristics of a river impacted by urban stormwater runoff. The riparian corridor of the river is dominated by industrial, commercial, and residential development,particularly in the lower reaches. Riparian vegetation is virtually nonexistent in many locations, and impervious surfaces often extend to the banks of the river. The North River suffers from low dissolved oxygen levels, high fecal coliform levels, and elevated levels of heavy metals in the sediment3. In fact, Salem Sound 2000 concluded that the North River exhibits symptoms of toxic impact as a result of urban stormwater runoff. These factors directly conflict with ongoing efforts to restore fish spawning habitat on the river, which currently achieve only partial success. The Center for Urban Watershed Renewal proposes to demonstrate the feasibility of retrofitting existing urbanized landscapes with best management systems that will increase infiltration rates, provide filtering mechanisms for stormwater runoff, and improve the water quality of stormwater discharging into the North River. Once completed, this project and the accompanying outreach program will address the need for successfully implemented examples of innovative stormwater management techniques. Histo1y of the Project The Center for Urban Watershed Renewal, in association with the Salem Sound Coastwatch4, a local water quality advocacy organization, identified the project site as a prime location for installation of innovative stormwater management methods, and in fact Russ Cohen was an early proponent of the work, due to its site and easy visibility, and setting within a EPA designated Brownfields Corridor currently undergoing a wave of redevelopment as is the entire City of Salem. River Wharf Real!y Trust (RWRT) owns the project site and is committed to improving the sustainability while reducing the environmental footprint of its properties. RWRT has conducted two earlier phases of building and grounds permitting and construction to support a state-of-the-art stormwater management retrofit in 2006. In this process,RWRT proactively obtained needed permits for conducting the green parking and rain garden construction. Based on ongoing communication with municipal authorities (Zoning Board of Appeals and Building Inspector), it will be quick and simple to obtain approval for the updated and modified designs currently planned. Therefore,we do not anticipate any obstacles to completing constriction by the end of June 2006. The site has multiple tenants, one of whom is The Bioen&eering Grou, Inc. (TBG), who specializes in sustainable design working to improve the function of ecosystems while attaining land management goals. TBG staff will provide all of the landscape design and engineering for this project as well as construction supervision, and eagerly looks forward ' Salem Sound 2000,unpublished data. 'Formerly known as Salem Sound 2000. to prominently featuring the project, in published papers and outreach, as its own best way to "walk the talk" of its professional practice. TBG is a certified WBE in MA. Salem Sound Coastwatch (SSCW) is a 501(c)(3) non-profit environmental advocacy organization based in Salem, MA. SSCW partners with businesses, governments, and other advocacy organizations to improve water quality within the watersheds flowing into Salem Sound including the North River. In the 1990s, the organization had a leading role in the development of the Comprehensive Conservation and management Plan for the Massachusetts Bays National Estuary Program. Now, in addition to coordinating volunteer monitoring and restoration programs, SSCW strives to increase awareness of the threats facing Salem Sound through their public education program. Scope of Work The essence of the project is the installation of a rainwater retention system and porous paving for the retention and reuse of stormwater. The Bioengineering Group, Inc. has designed and implemented these systems as part of stormwater management in numerous projects in the United States. Task I Final design for porous parking surface and rain garden planter- TBG Estimated duration: 3 weeks Deliverable: Complete drawing set of plans including sections, typical details, and materials specifications. Task 2 Coordinate modification of existing permits-TBG Estimated duration: 8 weeks Deliverable: Approval from all relevant government bodies Task 3 Coordinate subcontractor services for construction- TBG,CUWR Estimated duration: 4 weeks Deliverable: Signed agreement for services from a licensed landscape contractor to construct the designed retrofit. Task 4 Constructed landscape retrofit- TBG Estimated duration: 5 weeks Deliverable: Completed project and set of"as built" drawings. Task 5 Oversee construction- CUWR, TBG Duration: Concurrent with Task 4 Task 6 Provide public outreach and education- SSCW, TBG Duration: 6 weeks Deliverables: One major mailing to public officials, landowners, professionals and the general community describing the project, its key benefits, and inviting them to an, open house with a presentation documenting the planning, design, construction, future maintenance, and merits of the project. The workshop will be oriented to facilitate adoption of other similar retrofits by additional parties. Other interim informal mailings and events will be incorporated as possible. Table 1. Approximate Project Timeline Month each X equals one week) 1 2 3 4 5 Task I XXX Task 2 X XXXX XXX Task 3 XXXX Task 4 XXY1X X Task 5 XXXX X Task 6 XXXX I X Benefits to the Watershed The North River watershed is characterized by significant urban impacts throughout its entire area. The river no longer supports the significant populations of anadromous fish such as rainbow smelt and is listed on the state's 303-d list of Impaired Waters. As the cities of Salem and Peabody have grown so has the amount of impervious surface within the watershed. The result has been increased contaminated runoff from the many new parking lots and streets. As new renovation and infill work proceeds at a brisk pace, especially in the North River Corridor where numerous vacant lots still await re- development, there is a need to demonstrate practical solutions that allow construction while protecting the river. Retrofits at 18 Commercial Street present an opportunity for substantial improvement to the health of the North River and its estuary. As is common in such an urban area, approximately 97% of the quarter—acre property is impervious surface. By creating a raingarden that intercepts runoff from half the roof, substituting grassed permeable paving for existing asphalt parkking, and harvesting roof runnof from the rear half of the roof for toilet flushing, over 200,000 gallons per year of direct runoff to the North River will be eliminated and base flows and water quality will be improved. Reducing the direct input of stormwater and associated toxins to the North River through projects like this one is essential to addressing the impairments the river faces. Allowing for a more natural hydrologic regime through increased stormwater infiltration will bolster area aquifers and improve water quality in the nearby estuary. Finally, this project will contribute to the recovery of the native species that once thrived in the North River. Reduced levels of toxics and runoff sediments will mean a more suitable environment for aquatic invertebrates and anadromous fish species. Rain Garden—Rainwater from the roof will be directed to a retention garden in the front of the building. Such features are engineered to operate as functional wetlands and provide many of the benefits of natural wetlands. This rainwater will support native hydrophytic species and slowly enter the groundwater through the permeable Cross-section of typical rain garden underlayment. Detaining the stormwater from the roof and directing it into the soil will reduce the "flashiness" of runoff from the property. The "flash" refers to the surge of stormwater into gutters, culverts, and drains as water runs off of vo blanket impervious surfaces during a 97 t d age outlet precipitation event. Also, as the water passes through the soil of the raingarden, fine particulates will be filtered out and wetland biogeochemical processes will reduce levels of nutrients and toxics. The result will be cleaner water entering the groundwater. Porous Pavement—CUWR has identified the opportunity to remove UP to DIRECT FLOW INTO SUBGRADE 3,000 square feet of asphalt SURFACE WAIER FLOW at the project site. The DRAINAC1 VOID removal of asphalt from the property will reduce the UPI CADD-STON SURFACE amount of oil and grease I . ' I _ Aq entering the North River as PERMEABLE CASE a result of natural STOPAGE-LAY(R. weathering of the asphalt overtime. As an alternative, porous paving systems allow a more natural interface between the soil �CY WAPERIABLE Figure- Example porous pavement system (Ideal,Inc.) surface and groundwater while providing all of the functionality of a paved parking lot. These systems involve a layer of attractive paver blocks underlain by engineered sand and crushed stone. The pore spaces in between the block, sand particles, and crushed stone allow for rainwater to pass down to the soil beneath. Installing porous pavement will allow for significantly greater infiltration of stormwater and decrease the "flashiness" of runoff from the property while reducing the toxic chemicals that can leach from weathering asphalt. Rain-thru Steps and Ramp—In order to maintain the continuity and functionality of the rain garden, it is important to remove the existing impervious steps and handicapped access ramp, and replace them with a system that will allow for natural movement of precipitation and sunlight into the rain garden. Steps and modular ramp systems made from reinforced steel grate can provide all of the access needs while allowing stormwater to pass through to the soil beneath. These rain-thru systems serve the ecology of the rain garden and the accessibility of the building for all users. Precipitation will naturally collect in the rain garden and support the plants growing there. This novel (we have not been able to identify prior applications where stormwater management and building accessibility have been combined elsewhere) and enormously practical solution has been reviewed and approved by our design architect and building inspector, and shows great promise as a model for widespread adoption, assuming a successful demonstration. Rainwater Collection Tank—TBG has identified the opportunity to collect and use rainwater to offset municipal water usage which impacts to the Ipswich River Watershed. River Wharf Realty Trust has donated the use of a large-volume storage tank, already onsite, for use in this project.—Using a typical design, the tank will be elevated on a stand and collect rainwater from the roof gutters. The tank will be plumbed to feed the toilets in the men's and women's rooms by gravity. In the four coldest-weather months, the tank will be drained and capped to prevent freezing and damage to the system. Excess stormwater will be released to the raingarden. Toilet flushing is the largest weekly use of water at the site. Making use of the rainwater from the roof,when possible, will reduce TBG's withdrawal from the Ipswich River Watershed by an estimated 50,000 gallons per year. Demonstration Value The proposed project incorporates elements of stormwater management that have been gaining popularity over the last twenty years. These materials and methods are ideal for smaller lots or sites where a limited amount of space precludes the use of larger stormwater controls like ponds. Despite this growing recognition by landscape architects, hydrologists, and engineers, porous pavement and raingardens are rarely used in small- scale urban settings in Massachusetts. Such measures are virtually never used on retrofit applications on already developed land. In most cases the densely developed urban settings which were developed prior to any stormwater management regulations are the ones that need effective measures to "keep water local"most. This project will serve as a demonstration of the effectiveness and feasibility of these elements in a classically constrained setting. This site has considerable value as a demonstration site. First,because of its location five minutes from the MBTA Salem Station and along the North River Bikeway, an important recreational area in Salem, the project will be visible to the general public 365 days a year. The rain garden and porous paving will be visible as people walk,bike, and kayak along the North River. The native plants in the raingarden will provide beauty throughout the year and help spread awareness about the use of native,non-invasive plants in home and commercial landscapes. Second, Salem Sound Coastwatch has offered to assist in the coordination of a series of outreach activities that will bring the project to the attention of local landowners, public officials, and landscape contractors. These activities include four on-site seminars during the construction phase to show the designs and methods being employed. A volunteer workday is another outreach opportunity that will teach participants how these systems are installed. When the project is completed, SSCW and TBG will host an Open House to share the finished product with area homeowners, landscapers, and planning and conservation officials. Finally, the innovative stormwater management systems installed at 18 Commercial Street will be a focal point for collaborating professionals, agency representatives, and land managers who regularly visit The Bioengineering Group for years to come. As a recognized firm designing ecologically sound stormwater management systems, TBG will have the opportunity to promote their installation to clients from around Massachusetts and elsewhere,even after the formal outreach effort is complete. Page 1 of 3 Sivaramakrishnan Sangameswaran From: Lederer, Jason (DEP) [Jason.Lederer@ state.ma.us] Sent: Wednesday, September 27, 2006 3:31 PM To: Sivaramakrishnan Sangameswaran Subject: RE: Con Comm Hearing Hi Siva, Sorry to only be able to get back to you now. I left you a voicemail a short while ago. After a conversation with Carrie Duqez (Salem Conservation Agent) today, my hunch is that you are looking for the specific exemption that the project may meet. In reviewing the details of the project with Carrie, we concluded that the most appropriate exemption for the Commission to consider is 310 CMR 10.02(2)(b)(1)(f); "Conversion of impervious to vegetated surfaces, provided erosion and sedimentation controls are implemented during construction..." It sounds like things should go well tonight. Let me know if you need anything else, Regards, Jason ----T1----\1/-----T1---------T------------- Jason Lederer Massachusetts Department of Environmental Protection Northeast Regional Office 205B Lowell Street -Wilmington, MA 01887 Tel: (978) 694-3253 Fax: (978) 694-3498 E-mail:jason.ledere r @state.ma.us Check for your MassDEP file numbers and comments here: http://edep.d p.mus.gov/wetland/wetlmd.aspl From: Sivaramakrishnan Sangameswaran [mailto:SSangameswaran@bioengineering.com] Sent: Wednesday, September 27, 2006 10:38 AM To: Lederer, Jason (DEP) Subject: Con Comm Hearing Good Morning Jason. My name is Siva and am a colleague of Nick Wildman at The Biciengineering Group, Salem. I was interested in talking to you about our green construction activities that we are carrying out in front of our office. Please feel free to call me sometime today at 978-740-0096 Extn 521. Your inputs will be very helpful to me for the Con Comm 9/28/2006 CITY OF SALEM CONSERVATION COMMISSION City of Salem Conservation Commission Will hold a public hearing for a Request for a Determination of Applicability under the Wetlands Protection Act, Massachusetts General Laws, Chapter 131, Section 40 and Salem's Ordinance Pertaining to General Wetlands at the request of River Wharf Realty Trust, 18 Commercial Street, Salem, MA. The purpose of this hearing is for a determination of work related to the construction of a handicap ramp, stair well, and a rain garden in front of the existing commercial building located within a Riverfront Area at IS Commercial Street. This hearing will be held on Thursday, September 28, 2006 at 6:00 p.m. in Room 313, third floor at 120 Washington Street. cc z Kevin Comacchio Chairman Please run legal advertisement on: September 21, 2006 Please send bill to: The Bioengineering Group, Inc Gina Altri 18 Commercial Street Salem, MA 01970 978-740-0096 120 WASHINGTON STREET, SALEM, MASSACHUSETTS 01970 TEL: 978.745.9595 FAx: 978.740.0404 WWW.SALEM.COM CITY OF SALEM CONSERVATION COMMISSION C %TT 1-S%TT FORM PROJECT LOCATION: awil 'A i q- th"(d — DATE OF SITE VISIT PROJECT PROPONIENT:-31]a ZUQ�tf 2�- DEP FILE NUMBER:-9hA PROPOSED WORK: ,vo� IL------------ A; vim= Commission Members Agent: Abutters: Applicant/Property Owner/Representative: X'#equest for Determination E]Abbreviated Notice of Resource Area Delineation E]Notice of Intent Certificate of Compliance Enforcement/Violation E]Emergency Informal INLAND RESOURCE AREAS COASTAL RESOURCE AREAS OBank E]Land Subject to Coastal Land Under the Ocean ElBordering Vegetated Wetland Storm Flowage ElLand Subject to Flooding El Designated Port Area Coastal Beach Ekand Under Water Bodies or Waterway El Coastal Dune 0 Barrier Beach Arame: oRiverfront Area D Coastal Bank El Rocky Intertidal Shore Salt Marsh Land Under Salt Pond Vernal Pools Land Containing Shellfish Anadromous/Cata- dromous Fish Run Bordering Vegetated Weiland in 6oastal Area 120 WASHINGTON STREET, SALEM, MASSACHUSETTS 01970 TEL: 978.745.9595 FAX: 978.740.0404 0 WWW.SALEM.COM Water Body El Bordering Vegetated Wetland El Bank Coastal Beach El Coastal Dune INTEREsirs.0, �Iprotection of Water Supply aprotection of Groundwater Supply �Jflood Control Ostorm Damage Prevention Mprevention of Pollution Aprotection of Fisheries �Fprotection of Wildlife Habitat Protection of Land Containing Shellfish Is this an exempt project; If so,why? Are resource area boundaries delineated correctly? If not,explain. la SFr6dd(b4E El Photos 0 Site Map El Other: Take into account relevant aspects or features such as: natural or piped drainage or obvious pollution; topography; existing vegetation; possible alternative sites; signs of wildlife, possible vernal pools, rare species habitat; landmarks; recent or historical disturbances; proximity to other water bodies or drainage areas; adjacent land uses. .'t '7-'f 0 CITY OF SALEM CONSERVATION COMMISSION City of Salem Conservation Commission Will hold a site visit at 18 Commercial Street on Thursday, September 28, 2.006 at 4:50 p.m. Ile purpose of the site visit is to inspect the project site where the following activities have been proposed: determination of work related to the construction of a handicap ramp, stair well, and a rain garden in front of the existing commercial building located within a Riverfront Area. Kevin Cornaobid Conservation Commission Cbairman C-) M, �31 7 Ttlis notice POSt&d On "01-�Icliai sulipun 80aw CIty, Hall Ave., Satfre'ri, at . —p-10 th In acoordwn'w WZ111W. 23A -V218 Of NkO.L. 120 WASHINGIGH STREE'I', NIA'�SACIIJSE:'J-!',� 01970 * TFi,: 978.745.959,� FA�X 978.7,10.0zJ04 # WW'1V.SA1,EWC0M L, i A*,D RECEIVED SEP 1 9 2006 DEPT. OF PLANNING& COMMUNITY DEVELOPMENT 4ro- AV Cr, cl- IIQ C4 f:F- City of Salem Department of Planning & Community Development Check/Cash Receipt and Tracking Form Please complete Ilium and make two copies Date Received 19 J0(Q Amount Received 1 Form of Payment MCheck Cash CHECK PAYMENTS: write chedc number CASH PAYMENTS: write client initials F--j sign Permit Application Fee ��servatlon Commission Fee Payment received for F'-j Plannft Board Fee what service? F-1 Old Town Hall Rental Fee ED other Name of staff person receiving payment Gut" Additional Notes U 2181 SALEMFM BIOENGINEER.ING.'dROUP, INC. SALEM,.MA 01970 6371 113� -- IS COMMERCIAL ST.. SALEM�"01970a917 CHECK DATESeptember 19,2006 1 PH.(978)740-OM PAY TwenfvFive and 001100 Dollars AMOUW, $25.00 TO CitV of ��'!em Atter�� yi: Carrie Duques 4, 120 ,.-.'- �!,.;nqton Street Cow.�-.��tion commission, 3rd floor 01970 1180021,81"i 42113705SBI: 0 2 70 3 9 2 2 7 9118 Coj� 2. Application I'lle L11Massachusetts Department of Environmental Protection ureau o Resource Protection - Wetlands WPA Forml - Request for Determination of Applicability City/Town Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 A. General Information Important: When filling out 1 Applicant: forms on the River Wharf Realty Trust wgoldsmith@bioengineering.com computer, use Name E-Mail Address only the tab key to move your 18 Commercial Street cursor-do not Mailing Address use the return Salem MA 01970 key. City/Town State Zip Code 978-740-0096 ext.507 VQ Phone Number Fax Number(if applicable) 2. Representative (if any): The Bioengineering Group, Inc. Firm Nick Wildman nwildman@bioengineering.com Contact Name E-Mail Address 18 Commercial St Mailing Address Salem MA 01970 City[Town State Zip Code Phone Number Fax Number(if app-licable) B. Determinations 1. I request the Salem make the following determination(s). Check any that apply: Conservation Commission El a. whether the area depicted on plan(s)and/or map(s) referenced below is an area subject to jurisdiction of the Wetlands Protection Act. El b. whether the boundaries of resource area(s) depicted on plan(s) and/or map(s) referenced below are accurately delineated. Z c.whether the work depicted on plan(s)referenced below is subject to the Wetlands Protection Act. d. whether the area and/or work depicted on plan(s) referenced below is subject to the jurisdiction of any municipal wetlands ordinance or bylaw of: Salem Name of Municipality El e. whether the following scope of alternatives is adequate for work in the Riverfront Area as depicted on referenced plan(s). wpafo�l.doc Page I of 4 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands cityrrown WPA Form I - Request for Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 C. Project Description 1. a. Project Location (use maps and plans to identify the location of the area subject to this request): 18 Commercial Street Salem Street Address City[Tow -Z- ?e--0 Assessors Map/Plat Number Parcel/Lot-Number b. Area Description (use additional paper, if necessary): The project area is in a heavily industrialized section of Salem along the left bank of the North River. Commercial Street and its neighborhood are characterized by a parge proportion of impervious surfaces which drain directly into the North River. This runoff contributes to impaired water quality from sedimentation and chemical contamination in the River and in Salem Sound. The project was designed as a demonstration of innovative stormwater management by a Massachusetts licensed Professional Engineer and a Certified Professional in Erosion and Sediment Control (CPESC). The CPESC has supervised each stage of the work in progress. c. Plan and/or Map Reference(s): Title Date Title Date Title Date 2. a. Work Description (use additional paper and/or provide plan(s)of work, if necessary): Please see the attached plan. All areas of work have been stabilized using coir mattress for perimeter control and the site has been graded to collect all runoff in a shallow basin topography(see photo). The work at 18 Commercial Street involves removing 1,575 square feet of pavement in the front of the building (Riverfront Area). The asphalt and the surface fill are removed offsite and 3"clean topsoil brought in to establish a rain garden. Natural granite curbing will be installed along the edge fo the bed to form a wheelstop defining the edge of the parking lot. The rain garden will be planted with a wetland seed mix from Ernst Conservation Seed and select live plants suitable for the hydrology of a periodically saturated environment. The rain garden will collect rain from the roof and allow it to infiltrate into the soil, entering the North River much more slowly and with having had pollutants and nutrients processed through filtration and uptake. In addition, an area of 1,037 square feet on the side of the building has received soil amendments and a gravel pedestrian path to formalize and improve a favorite neighborhood cut-through to the park. The area has been seeded with a native meadow seed mix and mulched to ensure no erosion during establishment(see photo). The existing concrete staircase to the Bioengineering Group will be replaced with a metal "rain-through" material to allow rainwater to flow into the rain garden below. Similarly, the wooden handicaped access ramp will be replaced with a similar pervious material. Overall, the project will result in reduced impervious surface in the North River watershed with less runoff to the River and Salem Sound. The project also will result in the creation of a diverse dry and wet meadow habitat where there was none existing. This project is being done in coniunction with a neiahborhood heutification Droiect with Servino Salem (see letter). wpafo"l.doc Page 2 of 4 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Cityrrown WPA Form 1 - Request for Determination of Applicability Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 C. Project Description (cont.) b. Identify provisions of the Wetlands Protection Actor regulations which may exempt the applicant from having to file a Notice of Intent for all or part of the described work (use additional paper, if necessary). Based on our professional opinion, and in consultation with the NERO Circuit Rider, we are confident that this work is exempt from the Welland Protection Act under 310 CMR 10.02(f), "the conversion of impervious to vegetated surfaces, provided erosion and sedimentation controls are implemented during construction...... The work described in this RDA was designed and overseen by a registered PE and a CPESC using best management practices for construction erosion control. The project is designed to improve the infiltration of stormwater and the water quality in the North River and Salem Sound and has been included in recent EPA and MA Riverways grant application filed in cooperation with Salem Sound Coastwatch and Center for Urban Watershed Renewal (See attached). 3. a. If this application is a Request for Determination of Scope of Alternatives for work in the Riverfront Area, indicate the one classification below that best describes the project. El Single family house on a lot recorded on or before 8/1/96 [I Single family house on a lot recorded after 8/1/96 El Expansion of an existing structure on a lot recorded after 8/1/96 El Project, other than a single family house or public project, where the applicant owned the lot before 8/7/96 E:1 New agriculture or aquaculture project El Public project where funds were appropriated prior to 8/7/96 F1 Project on a lot shown on an approved, definitive subdivision plan where there is a recorded deed restriction limiting total alteration of the Riverfront Area for the entire subdivision Z Residential subdivision; institutional, industrial, or commercial project [I Municipal project E] District, county, state, or federal government project [:1 Project required to evaluate off-site alternatives in more than one municipality in an Environmental Impact Report under MEPA or in an alternatives analysis pursuant to an application for a 404 permit from the U.S. Army Corps of Engineers or 401 Water Quality Certification from the Department of Environmental Protection. b. Provide evidence (e.g., record of date subdivision lot was recorded)supporting the classification above (use additional paper and/or attach appropriate documents, if necessary.) wpafo�l.doc Page 3 of 4 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands WPA Form 1 - Request for Determination of Applicability Cityrrown Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 D. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Request for Determination of Applicability and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I further certify that the property owner, if different from the applicant, and the appropriate DEP Regional Office were sent a complete copy of this Request (including all appropriate documentation) simultaneously with the submittal of this Request to the Conservation Commission. Failure by the applicant to send copies in a timely manner may result in dismissal of the Request for Determination of Applicability. Name and address of the property owner: River Wharf Realty Trust Name 18 Commercial St. Mailing Address Salem City/Town MA 01970 State Zip Code Signatures: I also understand that notification of ti)is Request will be placed in a local newspaper at my expense in accorda ion;1�45( ) )(1) of t Wetlands Protection Act regulations. -� ='K: I=- —7J/5'z&0 Signature of Applicant Date Signature of Representative(if any) Date ,oafiormtdoc Page 4 of 4 VIE SVP VIA -77�1 AFT IT. Rk 11, .0- --Aft; 4A VA E if IT IT, �'p qj% T6 Aw Ti LK FtE T-1 -CII- ITT VF, .'FLOIF9, 1w 4� YU� PI _f 71, wild gg �1_ i A !F T &4F AL 4 Lis I-, WARM p I.w I VY. 4o _4 lot oil; Pt 41 LO AN II A AF tv U VOW RV- IN MR, 7e W ............. 18 Commercial St. Locus Map 4f or 1W, 4r ff A -VI Feet 0 100200 400 600 800 1 inch equals 400 feet ;71 zp" Request for Determination of Applicability- 18 Commercial Street, Salem, MA . ............ R E7; 4". jjj -X Vt7k tA f J�.W?r4_ Y Figure 3-Side of the building showing aggregate path,upland seeding area,and coir erosion control mat. Request for Determination of Applicability- 18 Commercial Street, Salem, MA rp.: 5WR Nl�_ 7, 0 a 0 0 'g Q # gl� T 14 N, M;x JO 6 vxgk' it OW 44 4�14 Figure 4-Close-up of the coir erosion control mat and straw mulch. L r I A...... M_j IrE Figure 5-View of rain garden bed. servin 9salem September 11, 2006 Ms. Wendi Goldsmith The Bioengineering Group 18 Commercial Street Salem MA 01970 Dear Ms. Goldsmith, SpoesorConintiftee Mark Terry Danversbank Thank you for your generous donation of$250 to the Serving Salem Communily Committee Chak Serve-a-thon! We appreciate your support of the Salem Harbor CDC and applaud Claudia Chuber your community spirit. AkLaighlin 17inanc4 Ina Laurence C.Harrington As a valued sponsor at the Apprentice level, The Bioengineering Group will be North Shore Bank recognized on this year's Serving Salem T-shirts to be worn by volunteers and in Marcy Flauber informational brochures used to recruit volunteers and gather pledges as well as 7BaA QLaivt Gvver&Frvy listed on the Serving Salem Website. You will also be thanked publicly at Serving Nicholas P.Helides Sakm. Beverly National Bank John H.Neely We're planning a morning of community service followed by lunch on Saturday, 11mr1horne Associates September 30 from 9 a.m. to I p.m. Teams of volunteers will take pan in service Maureen Satr projects around the city—doing chores for elderly residents, beautifying local Danversbank parks, planting bulbs, working on the Salem River Bed, cleaning up the community, and more! We hope to see you at Serving Salem, along with volunteers from The Bioengineering Group. Again, please accept our sincere thanks for your support. Sincerely, Nfichael Whalen Executive Director Serving Salem Community Sene-a-thon and Fundraiser Organized by Salem Harbor CDC 102 Lafayette St,, Salem, MA 01970 �IS AGE�SUPPOMED BY Telephone: (978) 825-4002 Fax: (978) 745-4345 UnitedQWay 50und Coft,,, Committed to enhancing andprotecting the 0 environmental quality of Salem Sound and its watershed 201 Washington St.,Suite 9 Salem,MA 01970 978-741-7900 PrDlec6h3 a Common Tusource Fax:978-741-0458 www.saletnsound.org Eileen Goldberg January 12 2006 Riverways Program/DFG 251 Causeway St, Suite 400 Boston, MA 02114 Dear Ms. Goldberg: Salem Sound Coastwatch (SSCW) enthusiastically supports the Center for Urban Watershed Renewal, Inc.'s grant proposal to install urban stormwater Best Management Practices (BMPs) at 18 Commercial Street in Salem. Salem is an urbanized area with a significant amount of impervious surface. Based on our water quality monitoring results in t1tis area of the North River and Beverly Harbor, stormwater is a significant pollution source. Also, the Ipswich River Watershed is a highly taxed source of municipal water for Salem and a growing North Shore population. Installing innovative BMPs in a visible public area will serve to raise awareness of stormwater and water conservation issues. By educating the public about simple modifications they can make on their own property, such as rain gardens and pervious pavement, stormwater BMPs will catch on. In particular, we hope to attract interest from the business community and developers about ways they can literally "go green". These BMPs are being used with success in many parts of the US and Europe not only to treat stormwater but to create aesthetic and recreational benefits as well. Oftentimes innovative ideas such as these are not seriously considered for implementation until they are demonstrated to work. Currently, there is no local demonstration site such as proposed in this grant proposal. This project will help raise awareness and build confidence in urban stormwater BMPS. Salem Sound Coastwatch will assist with public education and outreach for the project. We have long identified stormwater and water usage as major threats to Salem Sound and its surrounding watersheds. Through our programs, we bav'e experience with public education and outreach on stormwater and other issues and have developed relationships with local municipal officials, the media, local business owners, and area citizens, Salem Sound Coastwatch looks forward to partnering with the Center for Urban Watershed Renewal on this project and hopes that you will find this project worthy of funding. Sincerely, Barbara Warren Executive Director PROPOSAL TO DEMONSTRATE INNOVATIVE STORMATER MANAGEMENT RETROFIT SYSTEMS AT AN URBANIZED SITE ALONG THE NORTH RIVER IN SALEM, MA SUBMISSION TO THE RTVERWAYS PROGRAM OF THE MASSACHUSETTS DEPARTMENT OF FISH AND GAME RFR ID#: RIV-RIFLS-06-1 January 13, 2006 The Center For Urban Watershed Renewal, Inc. Charles Steele, Executive Director The Center for Urban Watershed Renewal, Inc. (CUWR) Mission Statement To develop, demonstrate, implement, and promote technology and policy to restore and manage urban watersheds. Urban watershed areas have long been ignored by resource managers as too deteriorated to warrant serious natural resource management attention. As a result,planners,politicians, engineers, and businesses alike have manipulated the landscape with a heavy hand, altering and impacting vegetation, soil, and waterways as convenient, and responding to environmental regulations with equally mechanistic methods. However, the cumulative effect of these actions is depleted ground water supplies, chronically low stream base flows, increased peak flows (which can erode streams or overwhelm piped systems), and the transmission of contaminants directly to receiving waters without treatment. Even the wastewater treatment plants and stormwater collection systems designed to manage these issues are in need of repair, expansion, and modification, which can only occur at great expense. The vegetation, healthy soil, and landforms that once served the function of capturing,buffering, filtering, purifying, and otherwise systematically handling rainfall, nutrients, and pollutants have been eradicated and replaced by structures that are often themselves sources of pollution. The problem is abundantly clear in the form of problem odors, fish kills, beach closings, restrictions on fish consumption, and ugly,neglected waterways that people have learned to avoid. The most effective solutions to restore these degraded resources will include the holistic restoration and enhancement of functional landforms and beneficial natural processes. Even outside of populated urban centers,numerous sites are burdened by industrial impacts due to mining, historic industry, past military use, or waste disposal. These sites often exhibit contamination of soils as well as surface or groundwater. The methods chosen to clean up these contaminants can either improve the ecological productivity of the site, or further impair it. Past strategies for remediation have tended to focus on narrow objectives, sometimes failing to recognize when the remedy is worse than the disease, or when treating only one symptom fails to cure. Many underutilized technologies exist which can treat contaminants using robust biological systems. By using plants,microorganisms, and natural geochernical processes, sites may be cleaned while simultaneously enhancing ecological health and leaving land in prime condition for conservation and recreation. The Center for Urban Watershed Renewal is a 501(c)(3)non-profit environmental advocacy organization. The Center for Urban Watershed Renewal believes that environmental quality, community vitality','ar�d socioeconomic opportunity are deeply connected. Based on that premise, the Center seeks to devise solutions that integrate natural resource management, commercial and residential development, and urban infrastructure. Our goal is to transform stigmatized, underutilized, degraded urban sites into economically viable,ecologically functional, socially valuable amenities. By focusing on Brownfields redevelopment, the Center seeks to avert sprawl, locate jobs near labor, strengthen decaying tax bases, and re-use existing infrastructure. By incorporating green technologies and cutting edge planning with Brownfields re- development, we can bring beauty, accessibility,ecological integrity, and social vitality to those areas most in need. Old industrial sites that were historically or are currently among the worst offenders in terms of watershed impacts (e.g., dams, channelization, filled wetlands and floodplains, elevated runoff volume, and poor water quality) can be converted into havens of treatment,benefit, and sensitivity. We seek to catalyze similar efforts elsewhere by demonstrating and documenting the social, economic, and ecological factors and outcomes. CUWR Focus Topics • Stormwater source reduction 0 GreeDspace and greenways • Riparian restoration . Recreation and natural science • Regional detention ponds/infiltration education zones . Rough and tumble natural play spaces • Treatment wetlands . Community gardens • Habitat enhancement , Natural resource based zoning • Phytoremediation K Stormwater utilities • Renewable construction materials . Combined sewer separation • Soil reclamation . Stream daylighting • Mine and slag drainage N Stormwater sewer elimiriati on • Integrating remedies for air, water, and . TMDL's soil pollution . Municipal composting Past project highlights include: • Conservation of endangered butterfly species on 5000 acre military reservation in Herlong, CA constrained by military use impacts such as unexploded ordinance • Collaboration with US Army Corps of Engineers and DoD Base Realignment and closure office to identify and develop strategies for sites in CA, TX, and IL where site clean-up needs posed threats to special and sensitive habitats • Successful 319 grant funded stormwater management demonstration projects in Salem, MA and Acushnet MA • Collaboration with TPL on the transfer of multiple parcels of land totaling over 55,000 acres where §oil remediation, public recreation, and habitat management needs and opportunities exist ' - • Outreach presentation to US Chamber of Commerce to raise consciousness and outline strategies for large and small business to practice improved watershed stewardship PROJECT DESCRIPTION Statement of Problem This project will help "keep water local" by addressing two significant problems. First, the majority of Salem's water supply comes from the Ipswich River Watershed, which is listed on the MA Riverways RITLS Low-Flow Inventory and widely understood to be one of the most stressed rivers in the Commonwealth. The rapid growth of development within the area relying on this watershed has taxed the natural hydrology and caused the river to run dry on occasions'. These dry periods have caused extensive fish kills and other alterations to the ecosystem2. This project includes the installation of a rainwater collection and use system that will reduce the withdrawal from the Ipswich River Watershed during key months of the year by capturing roof runoff and storing it for toilet flushing. Even with the low-flow toilets recently installed in the building, rainwater harvesting will reduce consumption of Ipswich River water by an estimated 50,000 gallons per year or more. Second, the proposed project will also measurably improve how stormwater enters the local receiving waters. Rivers flowing through heavily urbanized corridors are vulnerable to contaminated stormwater runoff from commercial, industrial, and residential sites. Where natural landscapes once provided and maintained infiltration processes, hardtop surfaces such as asphalt streets,parking lots, and building roofs have created vast quantities of impervious cover. Impervious surfaces eliminate precipitation contact with soils and prevent absorption and storage processes. As a result, groundwater resources contributing to baseflow are diminished, and stormwater runoff occurs almost immediately during a precipitation event. Stormwater runoff collects a variety of contaminants from these impervious surfaces. Vehicles and facilities experience mineral weathering and leak oil and grease. Rooftops collect heat from solar gain plus pollutants and nutrients. Bacteria from fecal matter and trash accumulate from numerous locations. These pollutants have a devastating toll on aquatic ecosystems, with effects ranging from algae blooms and damaged fish gills to anaerobic conditions and reduced reproductive capacity. ' Massachusetts Riverways Program: http://www.mass.gov/dfwele/�iver/programs/rifls/]iLipswich.htm 2 Lang,V.,Abele,R.,and Armstrong,D.,et.al. May 2001.Ipswich F�ver Target Fish Community. The North River in Salem,NIA exhibits characteristics of a river impacted by urban stormwater runoff, The Kipa�Tian corridor of the river is dominated by industrial, commercial, and residential development, particularly in the lower reaches. Riparian vegetation is virtually nonexistent in many locations, and impervious surfaces often extend to the banks of the river. The North River suffers from low dissolved oxygen levels,high fecal coliform levels, and elevated levels of heavy metals in the sediment3. In fact, Salem Sound 2000 concluded that the North River exhibits symptoms of toxic impact as a result of urban stormwater runoff. These factors directly conflict with ongoing efforts to restore fish spawning habitat on the river, which currently achieve only partial success. The Center for Urban Watershed Renewal proposes to demonstrate the feasibility of retrofitting existing urbanized landscapes with best management systems that will increase infiltration rates,provide filtering mechanisms for stormwater runoff, and improve the water quality of stormwater discharging into the North River. Once completed, this project and the accompanying outreach program will address the need for successfully implemented examples of innovative stormwater management techrdques. Histo1y of the Project The Center for Urban Watershed Renewal, in association with the Salem Sound Coastwatch4, a local water quality advocacy organization, identified the project site as a prime location for installation of innovative stormwater management methods, and in fact Russ Cohen was an early proponent of the work, due to its site and easy visibility, and setting within a EPA designated Brownfields Corridor currently undergoing a wave of redevelopment as is the entire City of Salem. River Wharf Realty Trust (RWRT) owns the project site and is committed to improving the sustainability while reducing the environmental footprint of its properties. RV%TRT has "77�-, 7 77,! �N,, conducted two earlier phases of building and grounds permitting and construction to support a state-of-the-art stormwater management retrofit in 2006. In this process,RWRT proactively obtained needed permits for conducting the green parking and rain garden construction. Based on ongoing communication with municipal authorities (Zoning Board of Appeals and Building Inspector), it will be quick and simple to obtain approval for the updated and modified designs currently planned. Therefore,we do not.anticipate any obstacles to completing constriction by the end of June 2006. The site has multiple tenants, one of whom is The Bioengineering Grou, Inc. (TBG), who specializes in sustainable design working to improve the function of ecosystems while attaining land management goals. TBG staff will provide all of the landscape design and engineering for this project as well as construction supervision, and eagerly looks forward 3 Salem Sound 20GO,unpublished data. 'Formerly known as Salem Sound 2000. to prominently featuring the project, in published papers and outreach, as its own best way to "walk the talk" of its-professional practice. TBG is a certified VVBE in MA. Salem Sound Coastwatch (SSCW) is a 501(c)(3) non-profit environmental advocacy organization based in Salem, MA. SSCW partners with businesses, governments, and other advocacy organizations to,improve water quality within the watersheds flowing into Salem Sound including the North River. In the 1990s, the organization had a leading role in the development of the Comprehensive Conservation and management Plan for the Massachusetts Bays National Estuary Program. Now, in addition to coordinating volunteer monitoring and restoration programs, SSCW strives to increase awareness of the threats facing Salem Sound through their public education program. Scope of Wo The essence of the project is the installation of a rainwater retention system and porous paving for the retention and reuse of stormwater. The Bioengineering Group, Inc. has designed and implemented these systems as part of stormwater management in numerous projects in the United States. Task I Final design for porous parking surface and rain garden planter- TBG Estimated duration: 3 weeks Deliverable: Complete drawing set of plans including sections, typical details, and materials specifications. Task 2 Coordinate modification of existing permits- TBG Estimated duration: 8 weeks Deliverable: Approval from all relevant government bodies Task 3 Coordinate subcontractor services for construction- TBG, CUWR Estimated duration: 4 weeks Deliverable: Signed agreement for services from a licensed landscape contractor to construct the designed retrofit. Task 4 Constructed landscape retrofit-TBG Estimated duration: 5 weeks Deliverable: Completed project and set of "as built" drawings. Task 5 Oversee construction- CU`VVR, TBG Duration: Concurrent with Task 4 Task 6 Provide public outreach ;nd-education- SSCW,TBG Duration: 6 weeks Deliverables: One major mailing to public officials, landowners, professionals and the general community describing the project, its key benefits, and inviting them to an, open house with a presentation docurhenting the planning, design, construction, future maintenance, and merits of the project. The workshop will be oriented to facilitate adoption of other similar retrofits by additional parties. Other interim informal mailings and events will be incorporated as possible. Table 1. Approximate Project Timeline Month each X e uals one week) 1 2 31 41 5 Task I XXX Task 2 X XXXX XXX Task 3 XXXX Task 4 X Task 5 XXXX X Task 6 X XXXX X Benefits to the Watershed The North River watershed is characterized by significant urban impacts throughout its entire area. The river no longer supports the significant populations of anadrornous fish such as rainbow smelt and is listed on the state's 303-d list of Impaired Waters. As the cities of Salem and Peabody have grown so has the amount of impervious surface within the watershed. The result has been increased contaminated runoff from the many new parking lots and streets. As new renovation and infill work proceeds at a brisk pace, especially in the North River Corridor where numerous vacant lots still await re- development, there is a need to demonstrate practical solutions that allow construction while protecting the river. Retrofits at 18 Commercial Street present an opportunity for substantial improvement to the health of the North River and its estuary. As is common in such an urban area, approximately 97% of the quarter—acre property is impervious surface. By creating a raingarden that intercepts runoff from half the roof, substituting grassed permeable paving for existing asphalt parkking, and harvesting roof runnof from the rear half of the roof for toilet flushing, over 200,000 gallons per year of direct runoff to the North River will be eliminated and base flows and water quality will be improved. Reducing the direct input of stormwater and associated toxins to the North River through projects like this one is essential to addressing the impairments the river faces. Allowing for a more natural hydrol o- gic regime through increased stormwater infiltration will bolster area aquifers and improve water quality in the nearby estuary. Finally,this project will contribute to the recovery of the native species that once thrived in the North River. Reduced levels of toxics and runoff sediments will mean a more suitable environment for aquatic invertebrates and anadr6mous fish species. Rain Garden—Rainwater from the roof will be directed to a retention garden in the front of the building. Such features are engineered to operate as functional wetlands and provide many of the benefits of natural wetlands. This rainwater will support native hydrophytic species and slowly enter the groundwater through the permeable Ctoss-secEon of typical rain gatden underlayment. Detaining the stormwater from the roof and directing it into the soil will reduce the "flashiness" of runoff from the property. The "flash" refers to the surge of stormwater into gutters, culverts, and drains as water runs off of impervious surfaces during a arnwel kel precipitation event. Also, as the water passes through the soil of the raingarden, fine particulates will be filtered out and wetland biogeochemical processes will reduce levels of nutrients and toxics. The result will be cleaner water entering the groundwater. Porous Pavement—CUWR has identified the opportunity to remove up to DIRECT FLOV1 IN70. SUBGRALIF 3,000 square feet of asphalt SRFACE WA-trR r[ov� at the project site. The removal of asphalt from the property will reduce the amount of oil and grease -T� entering the North River as PERM:45a BAS' a result of natural A�r- weathering of the asphalt PERM &RA over time. As an alternative, porous paving systems allow a more natural interface between the soil E figure-hxample porous pavement system(Ideal,Inc.) surface and groundwater while providing all of the functionality of a paved parking lot. These systems involve a layer of attractive paver blocks underlain by engineered sand and crushed stone. The pore spaces in between the block, sand particles, and crushed stone allow for rainwater to pass down to the soil beneath. Installing porous pavement will allow for significantly greater infiltration of stormwater and decrease the "flashiness" of runoff from the property while reducing the toxic chemicals that can leach from weathering asphalt. Rain-thru Steps and Ramp—In order to maintain the continuity and functionality of the rain garden, it is important to remove the existing impervious steps and handicapped access ramp, and replace them with a system that will allow for natural movement of precipitation and sunlight into the rain garden. Steps and modular ramp systems made from reinforced steel grate can provide all of the access needs while allowing stormwater to pass through to the soil beneath. These rain-thru systems serve the ecology of the rain garden and the accessibility of the building for all users. Precipitation will naturally collect in the rain garden and support the plants growing there. This novel (we have not been able to identify prior applications where stormwater management and building accessibility have been combined elsewhere) and enormously practical solution has been reviewed and approved by our design architect and building inspector, and shows great promise as a model for widespread adoption, assuming a successful demonstration. Rainwater Collection Tank—TBG has identified the opportunity to collect and use rainwater to offset municipal water usage which impacts to the Ipswich River Watershed. River Wharf Realty Trust has donated the use of a large-volume storage tank, already onsite, for use in this project. Using a typical design, the tank will be elevated on a stand and collect rainwater from the roof gutters. The tank will be plumbed to feed the toilets in the men's and women's rooms by gravity. In the four coldest-weather months, the tank will be drained and capped to prevent freezing and damage to the system. Excess stormwater will be released to the raingarden. Toilet flushing is the largest weekly use of water at the site. Making use of the rainwater from the roof, when possible,will reduce TBG's withdrawal from the Ipswich River Watershed by an estimated 50,000 gallons per year. Demonstration Value The proposed project incorporates elements of stormwater management that have been gaining popularity over the last twenty years. These materials and methods are ideal for smaller lots or sites where a limited amount of space precludes the use of larger stormwater controls like ponds. Despite this growing recognition by landscape architects, hydrologists, and engineers, porous pavement and raingardens are rarely used in small- scale urban settings in Massachusetts. Such measures are virtually never used on retrofit applications on already developed land. In most cases the densely developed urban settings which were developed prior to any stormwater management regulations are the ones that need effqctive measures to "keep water local"most. This project will serve as a demonstration of the effe�tiv_eness and feasibility of these elements in a classically constrained setting. This site has considerable value as a demonstration site. First,because of its location five minutes from the MBTA Salem Station and along the North River Bikeway, an important recreational area in Salem, the project will be visible to the general public 365 days a year. The rain garden and porous paving will be visible as people walk,bike, and kayak along the North River. The native plants in the raingarden will provide beauty throughout the year and help spread awareness about the use of native,non-invasive plants in home and commercial landscapes. Second, Salem Sound Coastwatch has offered to assist in the coordination of a series of outreach activities that will bring the project to the attention of local landowners,public officials, and landscape contractors. These activities include four on-site seminars during the construction phase to show the designs and methods being employed. A volunteer workday is another outreach opportunity that will teach participants how these systems are installed. When the project is completed, SSCW and TBG will host an Open House to share the finished product with area homeowners, landscapers, and planning and conservation officials. Finally, the innovative stormwater management systems installed at 18 Commercial Street will be a focal point for collaborating professionals, agency representatives, and land managers who regularly visit The Bioengineering Group for years to come. As a recognized firm designing ecologically sound stormwater management systems, TBG will have the opportunity to promote their installation to clients from around Massachusetts and elsewhere, even after the formal outreach effort is complete. Buildmit.6n.ble Communiti�on=EcolNicA Foundation 4 18 Commercial Street Salem.MA01970 ioengineering p:978-740-0096 f:978-740-0097 TOM GROUP bioengineering.com �W— F Wendi Goldsmith, CPG,CPSSc, President The Bioengineering Group Inc. 18, Commercial Street Salem, MA 01970 RECOVED To nCT V 6 2006 The Salem Conservation Commission CO DEPT. OF PLAIVivING Attention: Ms Carrie Duques &'h4UAJ1TYDEVELO & PMEIVT 120 Washington Street Salem, MA 01970 Sub: Regarding RDA for Rain Garden Activities Dear Conservation Commission Agent: This memo is written in response to the comments received during the commission hearing on 281h September 2006. There is no basement for the building and there are no sumps or other drainage elements that flow directly into the North River. A survey of the building demonstrated that the finished floor elevation of the building is above the 100-year flood elevation. We will ensure that the erosion control measures are in place and well maintained throughout the course of the project. As discussed during the RDA hearing, by removing impervious surfaces and routing roof runoff through the proposed rain garden (a) water quality treatment, (b) runoff containment, (c) sediment retention, (d) ecological and habitat functionalities of the buildings and grounds will be greatly improved. Thanks and Regards, [Wendi Goldsmith] ECOLOGISTS EARTHSCIENTISTS ENGINEERS LANDSCAPE ARCHITECTS