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SEWER LINE RELOCATION PROJECT-ENF 16 ENVIRONMENTAL NOTIFICATION FORM SALEM SEWER LINE RELOCATION PROJECT Willow Beach Salem, Massachusetts November 2019 GZA File No. 18.0174405.00 -AN" -- PREPARED FOR: City of Salem 93 Washington Street Salem, Massachusetts GZA GeoEnvironmental, Inc. 144 Elm Street I Amesbury, MA 01913 781-278-4800 31 Offices Nationwide www.p,za.com Known for excellence. Built on trust. November 25,2019 File No. 18.0174405.00 Mr. Matthew A. Beaton Secretary of the Executive Office of Energy and Environmental Affairs Attn: ME PA Office 100 Cambridge Street,Suite 900 GEOTECHNICAL Boston, MA 02114 ENVIRONMENTAL Re: Environmental Notification Form WATER C INSTRUCTION Salem Sewer Line Relocation Project MANAGEMENT Willow Beach Salem, Massachusetts Dear Secretary Beaton: On behalf of New England Civil Engineering (in conjunction with the City of Salem), GZA GeoEnvironmental, Inc. (GZA) is submitting this Environmental Notification '144 Elm Street Form (ENF)for the subject property.This application is being filed in accordance with Amesbury,MA 0193.3 the requirements of the Massachusetts Environmental Policy Act. Enclosed please find one original and one copy of the ENF for the above-referenced project. An electronic copy will be sent via electronic mail. In addition, one copy of the ENF has been submitted to the agencies and offices included in the distribution list (see Attachment 2). Currently,there is a pile supported sewer line that cuts across Willow Beach between Dion's Yacht Yard and Glover Street. The proposed project is to relocate the sewer line to be just seaward of the existing public and private seawalls along the beach and then tie back into the existing sewer line at Glover Street. The Project includes the new fill or structure in a velocity zone and is therefore subject to MEPA review (301 CMR 11.03 (3)(b)(1)(e)). Additional information on the proposed project is presented in the Project Narrative included in the ENF. Should you have any questions or comments regarding this submittal, or if you require additional information, please contact our office at(781) 278-4806. Sincerely, GZA G,�EOENVIRONMENTAL, INC. l David A.Smith Senior Project Manager Enclosed: ENF Project Narrative and Attachments CC: New England Civil Engineering; City of Salem; Distribution List An Equal Opportunity Employer M/F/V/H November 2019 ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / i COVER LETTER TABLE OF CONTENTS ENVIRONMENTAL NOTIFICATION FORM 1.0 PROJECT NARRATIVE ...........................................................................................................................1 A. INTRODUCTION ............................................................................................................................... 1 B. BACKGROUND................................................................................................................................. 1 C. EXISTING CONDITIONS.................................................................................................................... 1 D. PROPOSED WORK............................................................................................................................ 2 ProposedDemolition....................................................................................................................... 2 ProposedRelocation ....................................................................................................................... 2 E. RESOURCE AREAS............................................................................................................................ 3 Coastal Beach (310 CMR 10.27)...................................................................................................... 3 Land Containing Shellfish (310 CMR 10.34) .................................................................................... 4 CoastalBank (310 CMR 10.30)........................................................................................................ 4 Land Subject to Coastal Storm Flowage (310 CMR 10.04)..............................................................4 100-Foot Buffer Zone...................................................................................................................... 5 F. CONSTRUCTION PROCEDURES........................................................................................................ 5 G. MEASURES TO MINIMIZE RESOURCE AREA IMPACTS..................................................................... 6 H. ALTERNATIVES ANALYSIS................................................................................................................. 7 Alternative1-"Do Nothing„........................................................................................................... 7 Alternative 2—Replace In-Kind (With Fender Piles)....................................................................... 7 Alternative 3 - Relocation of Sewer Line Landward of Seawalls..................................................... 7 Alternative 4—Relocation of Sewer Line Seaward of Seawalls (Chosen Alternative).................... 7 ATTACHMENTS ATTACHMENT 1 FIGURES ATTACHMENT 2 MEPA DISTRIBUTION LIST ATTACHMENT 3 ALTERNATIVES ANALYSIS TABLE ATTACHMENT4 PERMIT DRAWINGS ATTACHMENT 5 PHOTOGRAPHIC LOG Commonwealth of Massachusetts Executive Office of Energy and Environmental Affairs Massachusetts Environmental Policy Act (MEPA) Office Environmental Notification Form For Office Use Only E EA#: MEPA Analyst: The information requested on this form must be completed in order to submit a document electronically for review under the Massachusetts Environmental Policy Act, 301 CMR 11.00. Project Name: Salem Sewer Line Relocation Project Street Address: Willow Beach Municipality: Salem Watershed: Atlantic Ocean Universal Transverse Mercator Coordinates: Latitude: 42.633160 Lon itude: -70.612099 Estimated commencement date: Winter 2019 Estimated completion date: Spring 2020 Project Type: Sewer Line Relocation I Status of project design: 60 %complete Proponent: City of Salem, David Knowlton, City Engineer Street Address: 93 Washington Street Municipality: Salem I State: MA Zip Code: 01970 Name of Contact Person: David A. Smith, Senior Project Manager Firm/A enc : GZA GeoEnviron mental, Inc. Street Address: 144 Elm Street Municipality: Amesbury State: MA Zip Code: 01913 Phone: (781) 278-4806 Fax: E-mail: david.smith za.corr Does this project meet or exceed a mandatory EIR threshold (see 301 CMR 11.03)? ❑Yes ®No If this is an Expanded Environmental Notification Form (ENF) (see 301 CMR 11.05(7)) or a Notice of Project Change (NPC), are you requesting: a Single EIR? (see 301 CMR 11.06(8)) ❑Yes ®No a Special Review Procedure? (see 301CMR 11.09) ❑Yes ®No a Waiver of mandatory EIR? (see 301 CMR 11.11) ❑Yes ®No a Phase I Waiver? (see 301 CMR11.11) ❑Yes ®No (Note: Greenhouse Gas Emissions analysis must be included in the Expanded ENF.) Which MEPA review threshold(s) does the project meet or exceed (see 301 CMR 11.03)? 11.03 (3)(b)(1)(e) Which State Agency Permits will the project require? Chapter 91 License Notice of Intent 401 Water Qualily Certificate Identify any financial assistance or land transfer from an Agency of the Commonwealth, including the Agency name and the amount of funding or land area in acres: Fundinq To Be Determined Effective January 2011 Summary of Project Size Existing Change Total & Environmental Impacts . ' Total site acreage 1.3 Ac. New acres of land altered 0•19 Acres of impervious area 0.19 0.19 Square feet of new bordering 0 vegetated wetlands alteration Square feet of new other wetland 0 alteration Acres of new non-water dependent 0.19 use of tidelands or waterways Gross square footage N/A NIA N/A Number of housing units N/A N/A N/A Maximum height (feet) N/A N/A N/A TRANSPORTATION Vehicle trips per day N/A N/A N/A Parking spaces N/A N/A N/A WASTEWATER Water Use (Gallons per day) N/A N/A NIA Water withdrawal (GPD) NIA N/A N/A Wastewater generation/treatment NIA N/A N/A (GPD) Length of water mains (miles) N/A N/A N/A Length of sewer mains (miles) N/A N/A N/A Has this project been filed with MEPA before? ❑ Yes (EEA# ) ®No Has any project on this site been filed with MEPA before? ❑ Yes (EEA# ) ®No -2- GENERAL PROJECT INFORMATION —all proponents must fill out this section PROJECT DESCRIPTION: Describe the existing conditions and land uses on the project site: The proiect site is located along Willow Beach between Dion's Yacht Yard and Glover Street in Salem. Massachusetts. Currently there is an elevated timber Haile-supported sewer line that cuts across the beach. Describe the proposed project and its programmatic and physical elements: The proposed project is to relocate the sewer line to be lust seaward of the existing public and private seawalls along the beach and then tie back into the existing sewer line at Glover Street. The existing sewer line and timber pile-supported structure will be removed. Additionally, the existing lateral sewer line from Willow Avenue will be reconstructed fora portion along Willow Avenue and will tie into the newt relocated sewer line must seaward of the Willow Avenue seawall. The drainage lines and water lines within Willow Avenue will also be reconstructed as part of this project. A new stormwater treatment unit will be installed prior to a relocated outfall adjacent to the existing Dion's Yacht Yard bulkhead. Additional information regarding the existing site conditions, temporary construction impacts and the proposed project is included in the attached Proiect Narrative and the Permit Drawings. NOTE: The project description should summarize both the project's direct and indirect impacts (including construction period impacts) in terms of their magnitude, geographic extent, duration and frequency, and reversibility, as applicable. It should also discuss the infrastructure requirements of the project and the capacity of the municipal and/or regional infrastructure to sustain these requirements into the future. Describe the on-site project alternatives (and alternative off-site locations, if applicable), considered by the proponent, including at least one feasible alternative that is allowed under current zoning, and the reasons(s) that they were not selected as the preferred alternative: Alternatives that were considered for the project include "do nothing" replace in-kind,-relocation of sewer line landward of seawalls, and relocation of sewer line seaward of seawalls. Additional details regarding the project alternatives are included in the attached Project Narrative, NOTE: The purpose of the alternatives analysis is to consider what effect changing the parameters and/or siting of a project, or components thereof, will have on the environment, keeping in mind that the objective of the MEPA review process is to avoid or minimize damage to the environment to the greatest extent feasible. Examples of alternative projects include alternative site locations, alternative site uses, and alternative site configurations. Summarize the mitigation measures proposed to offset the impacts of the preferred alternative: The demolition and removal of the existing elevated sewer line and associated timber Pile-supported structures will restore the tidal flats to their natural condition. Additionally. a stormwater treatment unit will be installed prior to a relocated drain outfall. This drain line does not currently have a stormwater treatment unit. If the project is proposed to be constructed in phases, please describe each phase: The proiect is not anticipated to be constructed in phases. AREAS OF CRITICAL ENVIRONMENTAL CONCERN: Is the project within or adjacent to an Area of Critical Environmental Concern? ❑Yes(Specify ) ®No if yes, does the ACEC have an approved Resource Management Plan?_Yes _No; If yes, describe how the project complies with this plan. -3- Will there be stormwater runoff or discharge to the designated ACEC?_Yes _X_No; If yes, describe and assess the potential impacts of such stormwater runoff/discharge to the designated ACEC. RARE SPECIES: Does the project site include Estimated and/or Priority Habitat of State-Listed Rare Species? (see http://www.mass.gov/dfwele/dfw/nhesp/regulatory_review/priority_habitat/priority_habitat home.htm) ❑Yes(Specify ) ®No HISTORICAL/ARCHAEOLOGICAL RESOURCES: Does the project site include any structure, site or district listed in the State Register of Historic Place or the inventory of Historic and Archaeological Assets of the Commonwealth? ❑Yes (Specify ) ®No If yes, does the project involve any demolition or destruction of any listed or inventoried historic or archaeological resources? ❑Yes (Specify ) ❑No WATER RESOURCES: Is there an Outstanding Resource Water(ORW) on or within a half-mile radius of the project site? _Yes _X_No; if yes, identify the ORW and its location. (NOTE: Outstanding Resource Waters include Class A public water supplies, their tributaries, and bordering wetlands; active and inactive reservoirs approved by MassDEP;certain waters within Areas of Critical Environmental Concern, and certified vernal pools. Outstanding resource waters are listed in the Surface Water Quality Standards, 314 CMR 4.00.) Are there any impaired water bodies on or within a half-mile radius of the project site? _Yes_X_No; if yes, identify the water body and pollutant(s) causing the impairment: Is the project within a medium or high stress basin, as established by the Massachusetts Water Resources Commission? Yes X No STORMWATER MANAGEMENT: Generally describe the project's stormwater impacts and measures that the project will take to comply with the standards found in MassDEP's Stormwater Management Regulations: The proposed project will comply with the standards found in the Stormwater Management Regulations to the maximum extent possible. The reconstructed drain lines within Willow Avenue will be constructed with a new stormwater treatment unit prior to the relocated outfall pipe. Erosion and sedimentation controls will be in place during construction. MASSACHUSETTS CONTINGENCY PLAN: Has the project site been, or is it currently being, regulated under M.G.L.c.21 E or the Massachusetts Contingency Plan? Yes _No _X_; if yes, please describe the current status of the site(including Release Tracking Number(RTN), cleanup phase, and Response Action Outcome classification): Is there an Activity and Use Limitation (AUL) on any portion of the project site?Yes_No_X_; if yes, describe which portion of the site and how the project will be consistent with the AUL: Are you aware of any Reportable Conditions at the property that have not yet been assigned an RTN? Yes —No _X_; if yes, please describe: SOLID AND HAZARDOUS WASTE: If the project will generate solid waste during demolition or construction, describe alternatives considered for re-use, recycling, and disposal of, e.g., asphalt, brick, concrete, gypsum, metal, wood: The existing sewer -4- line will be relocated. Excavation within Glover Street and Willow Avenue will be necessary for the sewer line replacement as well as the drain and water line replacements. Removed materials unsuitable for reuse will be properly disposed of at an approved facility. (NOTE:Asphalt pavement, brick, concrete and metal are banned from disposal at Massachusetts landfills and waste combustion facilities and wood is banned from disposal at Massachusetts landfills. See 310 CMR 19.017 for the complete list of banned materials.) Will your project disturb asbestos containing materials?Yes _No _X_; if yes, please consult state asbestos requirements at http://mass.gov/MassDEP/air/asbhom01.htm Describe anti-idling and other measures to limit emissions from construction equipment: Contractors will be required to limit emissions from construction equipment and idling of equipment will be kept to a minimum. DESIGNATED WILD AND SCENIC RIVER: Is this project site located wholly or partially within a defined river corridor of a federally designated Wild and Scenic River or a state designated Scenic River?Yes_No _X_; if yes, specify name of river and designation: If yes, does the project have the potential to impact any of the'outstandingly remarkable" resources of a federally Wild and Scenic River or the stated purpose of a state designated Scenic River? Yes _No _; if yes, specify name of river and designation: if yes, will the project will result in any impacts to any of the designated `outstandingly remarkable" resources of the Wild and Scenic River or the stated purposes of a Scenic River. Yes _No _; if yes,describe the potential impacts to one or more of the'outstandingly remarkable" resources or stated purposes and mitigation measures proposed. ATTACHMENTS: 1. List of all attachments to this document. 2. U.S.G.S. map (good quality color copy, 8-'/2 x 11 inches or larger, at a scale of 1:24,000) indicating the project location and boundaries. 3.. Plan, at an appropriate scale, of existing conditions on the project site and its immediate environs, showing all known structures, roadways and parking lots, railroad rights-of-way, wetlands and water bodies, wooded areas, farmland, steep slopes, public open spaces, and major utilities. 4 Plan, at an appropriate scale, depicting environmental constraints on or adjacent to the project site such as Priority and/or Estimated Habitat of state-listed rare species, Areas of Critical Environmental Concern, Chapter 91 jurisdictional areas, Article 97 lands, wetland resource area delineations, water supply protection areas, and historic resources and/or districts. 5. Plan, at an appropriate scale, of proposed conditions upon completion of project(if construction of the project is proposed to be phased, there should be a site plan showing conditions upon the completion of each phase). 6. List of all agencies and persons to whom the proponent circulated the ENF, in accordance with 301 CM 11.16(2). 7. List of municipal and federal permits and reviews required by the project, as applicable. -5- LAND SECTION — all proponents must fill out this section I. Thresholds/Permits A. Does the project meet or exceed any review thresholds related to land (see 301 CMR 11.03(1) _Yes_X_No; if yes, specify each threshold: II. Impacts and Permits A. Describe, in acres, the current and proposed character of the project site, as follows: Existina_ Change Total Footprint of buildings _0.0_ Internal roadways _0.0_ Parking and other paved areas 0.0 Other altered areas _0.19_ 0.19 Undeveloped areas _0.0_ Total: Project Site Acreage _1.3_ _0.0_ _1.3_ B. Has any part of the project site been in active agricultural use in the last five years? _Yes_X_ No; if yes, how many acres of land in agricultural use(with prime state or locally important agricultural soils)will be converted to nonagricultural use? C. Is any part of the project site currently or proposed to be in active forestry use? _Yes_X_No; if yes, please describe current and proposed forestry activities and indicate whether any part of the site is the subject of a forest management plan approved by the Department of Conservation and Recreation: D. Does any part of the project involve conversion of land held for natural resources purposes in accordance with Article 97 of the Amendments to the Constitution of the Commonwealth to any purpose not in accordance with Article 97?_Yes_X_No; if yes, describe: E. Is any part of the project site currently subject to a conservation restriction, preservation restriction, agricultural preservation restriction or watershed preservation restriction?_ Yes_X_ No; if yes, does the project involve the release or modification of such restriction? _Yes_No; if yes, describe: F. Does the project require approval of a new urban redevelopment project or a fundamental change in an existing urban redevelopment project under M.G.L.c.121A? _Yes_X No; if yes, describe: G. Does the project require approval of a new urban renewal plan or a major modification of an existing urban renewal plan under M.G.L.c.121 B?Yes_No_X_; if yes, describe: III. Consistency A. Identify the current municipal comprehensive land use plan Title: Date B. Describe the project's consistency with that plan with regard to: 1) economic development 2) adequacy of infrastructure 3) open space impacts 4) compatibility with adjacent land uses C. Identify the current Regional Policy Plan of the applicable Regional Planning Agency (RPA) RPA: Metr000litan Area Plannina Council -6- Title: MetroFuture: Making a Greater Boston Region Date May 2008 D. Describe the project's consistency with that plan with regard to: 1) economic development The_proposed project could create job opportunities during the construction process. 2) adequacy of infrastructure The proposedproiect will improve the resiliency of the sewer line and other infrastructure included. 3) open space impacts The proposed project will remove an elevated sewer line from within an existing beach area which will enhance and improve the open space of the existing beach. f -7- RARE SPECIES SECTION I. Thresholds/Permits A. Will the project meet or exceed any review thresholds related to rare species or habitat(see 301 CMR /1.03(2))? _Yes_X_No; if yes, specify, in quantitative terms: (NOTE: !f you are uncertain, it is recommended that you consult with the Natural Heritage and Endangered Species Program(NHESP)prior to submitting the ENF.) B. Does the project require any state permits related to rare species or habitat? _Yes _X_No C. Does the project site fall within mapped rare species habitat(Priority or Estimated Habitat?) in the current Massachusetts Natural Heritage Atlas (attach relevant page)? _Yes_X No. D. If you answered "No"to all questions A, B and C, proceed to the Wetlands,Waterways, and Tidelands Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Rare Species section below. II. Impacts and Permits A. Does the project site fall within Priority or Estimated Habitat in the current Massachusetts Natural Heritage Atlas (attach relevant page)? _Yes_No. If yes, 1. Have you consulted with the Division of Fisheries and Wildlife Natural Heritage and Endangered Species Program (NHESP)? _Yes_No; if yes, have you received a determination as to whether the project will result in the"take" of a rare species? Yes_No; if yes, attach the letter of determination to this submission. 2. Will the project"take" an endangered, threatened, and/or species of special concern in accordance with M.G.L. c.131A(see also 321 CMR 10.04)? _Yes_No; if yes, provide a summary of proposed measures to minimize and mitigate rare species impacts 3. Which rare species are known to occur within the Priority or Estimated Habitat? 4. Has the site been surveyed for rare species in accordance with the Massachusetts Endangered Species Act? —Yes_No 4. If your project is within Estimated Habitat, have you filed a Notice of Intent or received an Order of Conditions for this project? _Yes_No; if yes, did you send a copy of the Notice of Intent to the Natural Heritage and Endangered Species Program, in accordance with the Wetlands Protection Act regulations? _Yes_No B. Will the project"take"an endangered, threatened, and/or species of special concern in accordance with M.G.L. c.131A(see also 321 CMR 10.04)? _Yes _No; if yes, provide a summary of proposed measures to minimize and mitigate impacts to significant habitat: -8- WETLANDS, WATERWAYS, AND TIDELANDS SECTION I. Thresholds 1 Permits A. Will the project meet or exceed any review thresholds related to wetlands,waterways, and tidelands (see 301 CMR 11.03(3))? _X_Yes_No; if yes, specify, in quantitative terms: The project meets the review threshold under 301 CMR 11.03 (Lbj(1)[e] as it is a new structure in a velocity zone or regulatory floodway. B. Does the project require any state permits (or a local Order of Conditions) related to wetlands, waterways, or tidelands? _X_Yes—No; if yes, specify which permit: The project will require a Chapter 91 License from the MassDEP Waterways Regulation Program and a local Order of Conditions from the Salem Conservation Commission. C. If you answered "No"to both questions A and B, proceed to the Water Supply Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Wetlands, Waterways, and Tidelands Section below. II.Wetlands Impacts and Permits A. Does the project require a new or amended Order of Conditions under the Wetlands Protection Act(M.G.L. c.131A)? _X_Yes_No; if yes, has a Notice of Intent been filed?_Yes_X_ No; if yes, list the date and MassDEP file number: ; if yes, has a local Order of Conditions been issued? _Yes_X_No; Was the Order of Conditions appealed? _Yes_No. Will the project require a Variance from the Wetlands regulations?_Yes_X_No. B. Describe any proposed permanent or temporary impacts to wetland resource areas located on the project site: The proposed work includes the relocation of an existing elevated sewer line. Work will be performed within Coastal Beach; Land Containing Shellfish, Coastal Bank. Land Subject to Coastal Storm Flowage and the 100-foot buffer zone. The attached project narrative includes description of the work within these resource areas_ C. Estimate the extent and type of impact that the project will have on wetland resources, and indicate whether the impacts are temporary or permanent: Coastal Wetlands Area (square feet) or Temporary or Length (linear feet) Permanent Impact? Land Under the Ocean Designated Port Areas Coastal Beaches 8,242 SF 8,599 SF Coastal Dunes Barrier Beaches Coastal Banks 382 LF 30 LF Rocky Intertidal Shores Salt Marshes Land Under Salt Ponds Land Containing Shellfish 6,465 SF 5,579 SF Fish Runs Land Subject to Coastal Storm Flowage 3,563 SF_ 12,730 SF_ Inland Wetlands Bank(If Bordering Vegetated Wetlands Isolated Vegetated Wetlands Land under Water Isolated Land Subject to Flooding Bordering Land Subject to Flooding -9- Riverfront Area D. Is any part of the project: 1. proposed as a limited project? _X Yes_No; if yes, what is the area (in sf)? 8,800 square feet(relocation and reconstruction of sewer utility) 2. the construction or alteration of a dam? _Yes_X_No; if yes, describe: 3. fill or structure in a velocity zone or regulatory floodway? _X_Yes_No 4. dredging or disposal of dredged material? _Yes_X_No; if yes, describe the volume of dredged material and the proposed disposal site: 5. a discharge to an Outstanding Resource Water(ORW)or an Area of Critical Environmental Concern (ACEC)? _Yes_X_No 6. subject to a wetlands restriction order? _Yes X_No; if yes, identify the area (in sf): 7. located in buffer zones? X_Yes_No; if yes, how much (in sf) 6,600 SF E. Will the project: 1. be subject to a local wetlands ordinance or bylaw? _X_Yes_No 2. alter any federally-protected wetlands not regulated under state law? _Yes_X_No; if yes, what is the area (so? 111.Waterways and Tidelands Impacts and Permits A. Does the project site contain waterways or tidelands (including filled former tidelands)that are subject to the Waterways Act, M.G.L.c.91? _X_Yes_No; if yes, is there a current Chapter 91 License or Permit affecting the project site? _X_Yes_No; if yes, list the date and license or permit number and provide a copy of the historic map used to determine extent of filled tidelands: DPW License No. 1522 dated 1933. B. Does the project require anew or modified license or permit under M.G.L.c.91?_X_Yes No; if yes, how many acres of the project site subject to M.G.L.c.91 will be for non-water- dependent use? Current _N/A_ Change_N/A_ Total_N/A_ If yes, how many square feet of solid fill or pile-supported structures (in sf)? 10.000 sf C. For non-water-dependent use projects, indicate the following: Area of filled tidelands on the site: Area of filled tidelands covered by buildings: For portions of site on filled tidelands, list ground floor uses and area of each use: Does the project include new non-water-dependent uses located over flowed tidelands? Yes No Height of building on filled tidelands Also show the following on a site plan: Mean High Water, Mean Low Water, Water- dependent Use Zone, location of uses within buildings on tidelands, and interior and exterior areas and facilities dedicated for public use, and historic high and historic low water marks. D. Is the project located on landlocked tidelands? _Yes _X_No; if yes, describe the project's impact on the public's right to access, use and enjoy jurisdictional tidelands and describe measures the project will implement to avoid, minimize or mitigate any adverse impact: E. Is the project located in an area where low groundwater levels have been identified by a municipality or by a state or federal agency as a threat to building foundations?_Yes _X_No; if yes, describe the project's impact on groundwater levels and describe measures the project will implement to avoid, minimize or mitigate any adverse impact: - 10- F. Is the project non-water-dependent and located on landlocked tidelands or waterways or tidelands subject to the Waterways Act and subject to a mandatory EIR?_Yes_X_ No; (NOTE.If yes, then the project will be subject to Public Benefit Review and Determination.) G. Does the project include dredging?_Yes_X_No; if yes, answer the following questions: What type of dredging? Improvement_Maintenance_Both What is the proposed dredge volume, in cubic yards (cys) What is the proposed dredge footprint length (ft)_width (ft) depth (ft); Will dredging impact the following resource areas? Intertidal Yes_ No_; if yes, _sq ft Outstanding Resource Waters Yes_ No_; if yes,_sq ft Other resource area (i.e. shellfish beds, eel grass beds) Yes_ No_; if yes_ sq ft If yes to any of the above, have you evaluated appropriate and practicable steps to: 1) avoidance; 2) if avoidance is not possible, minimization; 3) if either avoidance or minimize is not possible, mitigation? If no to any of the above, what information or documentation was used to support this determination? Provide a comprehensive analysis of practicable alternatives for improvement dredging in accordance with 314 CMR 9.07(1)(b). Physical and chemical data of the sediment shall be included in the comprehensive analysis. Sediment Characterization Existing gradation analysis results? _Yes_No: if yes, provide results. Existing chemical results for parameters listed in 314 CMR 9.07(2)(b)6? Yes No; if yes, provide results. Do you have sufficient information to evaluate feasibility of the following management options for dredged sediment? If yes, check the appropriate option. Beach Nourishment_ Unconfined Ocean Disposal_ Confined Disposal: Confined Aquatic Disposal (CAD)_ Confined Disposal Facility (CDF)_ Landfill Reuse in accordance with COMM-97-001 _ Shoreline Placement_ Upland Material Reuse In-State landfill disposal Out-of-state landfill disposal (NOTE. This information is required for a 401 Water Quality Certification.) IV. Consistency: A. Does the project have effects on the coastal resources or uses, and/or is the project located within the Coastal Zone?_X Yes_No; if yes, describe these effects and the projects consistency with the policies of the Office of Coastal Zone Management: The proposed project is located within the Coastal Zone. The project is proposed to improve public health and safety by providing erosion and coastal flooding protection to the existing sanitary sewer system, and by enhancing public infrastructure resiliency for increasing sea levels and major coastal storms. B. Is the project located within an area subject to a Municipal Harbor Plan? _Yes_X_ No; if yes, identify the Municipal Harbor Plan and describe the project's consistency with that plan: - 11 - WATER SUPPLY SECTION I. Thresholds/ Permits A. Will the project meet or exceed any review thresholds related to water supply (see 301 CMR 11.03(4))? _Yes_X No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to water supply? _Yes_X_No; if yes, specify which permit: C. If you answered "No"to both questions A and B, proceed to the Wastewater Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Water Supply Section below. II. Impacts and Permits A. Describe, in gallons per day (gpd), the volume and source of water use for existing and proposed activities at the project site: Existinq Change Total Municipal or regional water supply Withdrawal from groundwater Withdrawal from surface water Interbasin transfer (NOTE.Interbasin Transfer approval will be required if the basin and community where the proposed water supply source is located is different from the basin and community where the wastewater from the source will be discharged.) B. If the source is a municipal or regional supply, has the municipality or region indicated that there is adequate capacity in the system to accommodate the project?_Yes_No C. If the project involves a new or expanded withdrawal from a groundwater or surface water source, has a pumping test been conducted? _Yes_No; if yes, attach a map of the drilling sites and a summary of the alternatives considered and the results. D. What is the currently permitted withdrawal at the proposed water supply source (in gallons per day)? Will the project require an increase in that withdrawal?_Yes No; if yes, then how much of an increase (gpd)? E. Does the project site currently contain a water supply well, a drinking water treatment facility, water main, or other water supply facility, or will the project involve construction of a new facility? Yes_No. If yes, describe existing and proposed water supply facilities at the project site: Permitted Existing Avg Project Flow Total Flow Daily Flow Capacity of water supply well(s) (gpd) Capacity of water treatment plant(gpd) F. If the project involves a new interbasin transfer of water, which basins are involved, what is the direction of the transfer, and is the interbasin transfer existing or proposed? G. Does the project involve: 1. new water service by the Massachusetts Water Resources Authority or other agency of the Commonwealth to a municipality or water district? _Yes_No 2. a Watershed Protection Act variance? _Yes_No; if yes, how many acres of alteration? 3. a non-bridged stream crossing 1,000 or less feet upstream of a public surface drinking - 12- water supply for purpose of forest harvesting activities? _Yes_No III. Consistency Describe the project's consistency with water conservation plans or other plans to enhance water resources, quality, facilities and services: - 13- WASTEWATER SECTION I. Thresholds/Permits A. Will the project meet or exceed any review thresholds related to wastewater(see 301 CMR 11.03(5))? _Yes_X No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to wastewater? _Yes_X_No; if yes, specify which permit: C. If you answered "No"to both questions A and B, proceed to the Transportation --Traffic Generation Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Wastewater Section below. 11. Impacts and Permits A. Describe the volume(in gallons per day) and type of disposal of wastewater generation for existing and proposed activities at the project site (calculate according to 310 CMR 15.00 for septic systems or 314 CMR 7.00 for sewer systems): Existing Chance Total Discharge of sanitary wastewater Discharge of industrial wastewater TOTAL Existing Change Total Discharge to groundwater Discharge to outstanding resource water Discharge to surface water Discharge to municipal or regional wastewater facility TOTAL B. Is the existing collection system at or near its capacity? _Yes_No; if yes, then describe the measures to be undertaken to accommodate the project's wastewater flows: C. Is the existing wastewater disposal facility at or near its permitted capacity?_Yes_No; if yes, then describe the measures to be undertaken to accommodate the project's wastewater flows: D. Does the project site currently contain a wastewater treatment facility, sewer main, or other wastewater disposal facility, or will the project involve construction of a new facility? _Yes No; if yes, describe as follows: Permitted Existing Avg Project Flow Total Dailv Flow Wastewater treatment plant capacity (in gallons per day) E. If the project requires an interbasin transfer of wastewater, which basins are involved, what is the direction of the transfer, and is the interbasin transfer existing or new? - 14- (NOTE.Interbasin Transfer approval may be needed if the basin and community where wastewater will be discharged is different from the basin and community where the source of water supply is located.) F. Does the project involve new sewer service by the Massachusetts Water Resources Authority (MWRA)or other Agency of the Commonwealth to a municipality or sewer district? _Yes_No G. Is there an existing facility, or is a new facility proposed at the project site for the storage, treatment, processing, combustion or disposal of sewage sludge, sludge ash, grit, screenings, wastewater reuse (gray water) or other sewage residual materials? _Yes_No; if yes, what is the capacity (tons per day): Existing Change Total Storage Treatment Processing Combustion Disposal H. Describe the water conservation measures to be undertaken by the project, and other wastewater mitigation, such as infiltration and inflow removal. III. Consistency A. Describe measures that the proponent will take to comply with applicable state, regional, and local plans and policies related to wastewater management: B. If the project requires a sewer extension permit, is that extension included in a comprehensive wastewater management plan? _Yes_No; if yes, indicate the EEA number for the plan and whether the project site is within a sewer service area recommended or approved in that plan: - 15- TRANSPORTATION SECTION (TRAFFIC GENERATION I. Thresholds/Permit A. Will the project meet or exceed any review thresholds related to traffic generation (see 301 CMR 11.03(6))? _Yes_X_No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to state-controlled roadways?_Yes_X_ No; if yes, specify which permit: C. If you answered "No"to both questions A and B, proceed to the Roadways and Other Transportation Facilities Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Traffic Generation Section below. II. Traffic Impacts and Permits A. Describe existing and proposed vehicular traffic generated by activities at the project site: Existing Change Total Number of parking spaces Number of vehicle trips per day ITE Land Use Code(s): B. What is the estimated average daily traffic on roadways serving the site? Roadway Existinq Change Total 1. 2. 3. C. If applicable, describe proposed mitigation measures on state-controlled roadways that the project proponent will implement: D. How will the project implement and/or promote the use of transit, pedestrian and bicycle facilities and services to provide access to and from the project site? C. Is there a Transportation Management Association (TMA)that provides transportation demand management(TDM) services in the area of the project site? Yes No; if yes, describe if and how will the project will participate in the TMA: D. Will the project use(or occur in the immediate vicinity of)water, rail, or air transportation facilities? Yes No; if yes, generally describe: E. If the project will penetrate approach airspace of a nearby airport, has the proponent filed a Massachusetts Aeronautics Commission Airspace Review Form (780 CMR 111.7) and a Notice of Proposed Construction or Alteration with the Federal Aviation Administration (FAA) (CFR Title 14 Part 77.13, forms 7460-1 and 7460-2)? III. Consistency Describe measures that the proponent will take to comply with municipal, regional, state, and federal plans and policies related to traffic, transit, pedestrian and bicycle transportation facilities and services: - 16- TRANSPORTATION SECTION (ROADWAYS AND OTHER TRANSPORTATION FACILITIES] I. Thresholds A. Will the project meet or exceed any review thresholds related to roadways or other transportation facilities (see 301 CMR 11.03(6))? _Yes_X_No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to roadways or other transportation facilities? _Yes_X_No; if yes, specify which permit: C. If you answered "No"to both questions A and B, proceed to the Energy Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Roadways Section below. II. Transportation Facility Impacts A. Describe existing and proposed transportation facilities in the immediate vicinity of the project site: B. Will the project involve any 1. Alteration of bank or terrain (in linear feet)? 2. Cutting of living public shade trees (number)? 3. Elimination of stone wall (in linear feet)? III. Consistency--Describe the project's consistency with other federal, state, regional, and local plans and policies related to traffic, transit, pedestrian and bicycle transportation facilities and services, including consistency with the applicable regional transportation plan and the Transportation Improvements Plan (TIP), the State Bicycle Plan, and the State Pedestrian Plan: - 17- ENERGY SECTION I. Thresholds/Permits A. Will the project meet or exceed any review thresholds related to energy (see 301 CMR 11.03(7))? _Yes_X No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to energy? _Yes_X_No; if yes, specify which permit: C. If you answered "No"to both questions A and B, proceed to the Air Quality Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Energy Section below. II. Impacts and Permits A. Describe existing and proposed energy generation and transmission facilities at the project site: Existing Change Total Capacity of electric generating facility (megawatts) Length of fuel line (in miles) Length of transmission lines (in miles) Capacity of transmission lines (in kilovolts) B. If the project involves construction or expansion of an electric generating facility, what are: 1. the facility's current and proposed fuel source(s)? 2. the facility's current and proposed cooling source(s)? C. If the project involves construction of an electrical transmission line, will it be located on a new, unused, or abandoned right of way?_Yes_No; if yes, please describe: D. Describe the project's other impacts on energy facilities and services: III. Consistency Describe the projects consistency with state, municipal, regional, and federal plans and policies for enhancing energy facilities and services: AIR QUALITY SECTION I. Thresholds A. Will the project meet or exceed any review thresholds related to air quality (see 301 CMR 11.03(8))? _Yes_X_No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to air quality? _Yes_X_No; if yes, specify which permit: C. If you answered "No"to both questions A and B, proceed to the Solid and Hazardous Waste Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Air Quality Section below. II. Impacts and Permits A. Does the project involve construction or modification of a major stationary source (see 310 CMR 7.00, Appendix A)?_Yes_No; if yes, describe existing and proposed emissions (in tons per day) of: Existing Change Total Particulate matter Carbon monoxide Sulfur dioxide Volatile organic compounds Oxides of nitrogen Lead Any hazardous air pollutant Carbon dioxide B. Describe the project's other impacts on air resources and air quality, including noise impacts: Ill. Consistency A. Describe the project's consistency with the State Implementation Plan: B. Describe measures that the proponent will take to comply with other federal, state, regional, and local plans and policies related to air resources and air quality: 19 SOLID AND HAZARDOUS WASTE SECTION I. Thresholds/Permits A. Will the project meet or exceed any review thresholds related to solid or hazardous waste (see 301 CMR 11.03(9))? _Yes_X_No; if yes, specify, in quantitative terms: B. Does the project require any state permits related to solid and hazardous waste? _Yes _X_No; if yes, specify which permit: C. If you answered"No"to both questions A and B, proceed to the Historical and Archaeological Resources Section. If you answered "Yes"to either question A or question B, fill out the remainder of the Solid and Hazardous Waste Section below. II. Impacts and Permits A. Is there any current or proposed facility at the project site for the storage, treatment, processing, combustion or disposal of solid waste?_Yes_No; if yes, what is the volume (in tons per day) of the capacity: Existing Change Total Storage Treatment, processing Combustion Disposal B. Is there any current or proposed facility at the project site for the storage, recycling, treatment or disposal of hazardous waste?_Yes_No; if yes, what is the volume (in tons or gallons per day) of the capacity: Existing Change Total Storage Recycling Treatment Disposal C. If the project will generate solid waste (for example, during demolition or construction), describe alternatives considered for re-use, recycling, and disposal: D. If the project involves demolition, do any buildings to be demolished contain asbestos? Yes_No E. Describe the project's other solid and hazardous waste impacts (including indirect impacts): III. Consistency Describe measures that the proponent will take to comply with the State Solid Waste Master Plan: 20 HISTORICAL AND ARCHAEOLOGICAL RESOURCES SECTION I. Thresholds l Impacts A. Have you consulted with the Massachusetts Historical Commission? _Yes_X_No; if yes, attach correspondence. For project sites involving lands under water, have you consulted with the Massachusetts Board of Underwater Archaeological Resources? Yes No; if yes, attach correspondence B. Is any part of the project site a historic structure, or a structure within a historic district, in either case listed in the State Register of Historic Places or the Inventory of Historic and Archaeological Assets of the Commonwealth? _Yes_X_No; if yes, does the project involve the demolition of all or any exterior part of such historic structure? _Yes X_No; if yes, please describe: C. Is any part of the project site an archaeological site listed in the State Register of Historic Places or the Inventory of Historic and Archaeological Assets of the Commonwealth? _Yes X No; if yes, does the project involve the destruction of all or any part of such archaeological site?'-_Yes _X_No; if yes, please describe: D. If you answered "No"to all parts of both questions A, B and C, proceed to the Attachments and Certifications Sections. If you answered "Yes"to anv part of either question A or question B, fill out the remainder of the Historical and Archaeological Resources Section below. II. Impacts Describe and assess the project's impacts, direct and indirect, on listed or inventoried historical and archaeological resources: III. Consistency Describe measures that the proponent will take to comply with federal, state, regional, and local plans and policies related to preserving historical and archaeological resources: 21 CERTIFICATIONS: 1. The Public Notice of(Environmental Review has been/will be published in the following newspapers in accordance with 301 CMR 11.15(1): (Name) (mate) 2. This form has been circulated to Agencies and Persons in accordance with 301 CMR 11.16(2). Signatures: Date Sign of Responsible Officer Date Signature of person preparing or Proponent ENF(if different from above) )Ik--io g , w1 'ptu'7 A-,45�q1r4 azA Name(print or type) Name (print or type) 41-11 540%. - "- -- &F-A Firm/Ag ncy Firm/Agency q � IVIO 4tn [V,S rt I k(4 ALP-STXCE Str et Street r� Municipality tate/Zip Municipality/State/Zip q It. 411. 410 Z7 qb()6 Phone Phone 22 November 2019 ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / 1 1.0 PROJECT NARRATIVE A. INTRODUCTION GZA GeoEnvironmental, Inc. (GZA),was retained by New England Civil Engineering, in conjunction with the City of Salem,to provide design,engineering,evaluation,and permitting services for the proposed project to remove the existing pile supported sewer line spanning the beach area between Dion's Yacht Yard and Glover Street and to relocate the sewer line to be just seaward of the existing public and private seawalls along the beach and tie back into the existing sewer line at Glover Street Salem, Massachusetts. The following provides a detailed description of the current conditions and the proposed project, as well as a description of the resource areas and potential impacts to those resources that may result from this project.An alternatives analysis is included below as well as an alternatives summary table in Attachment 3. B. BACKGROUND The project site is located at Willow Beach in Salem, Massachusetts between Dion's Yacht Yard, Willow Avenue and Glover Street (see Attachment 1 — Figures). An existing elevated pile-supported sewer line extends from Dion's Yacht Yard to Glover Street, with a lateral pipe from Willow Avenue connecting along the alignment (See Attachment 4 — Permit Drawings and Attachment 5 — Photographic Log). Willow Beach is a coastal beach composed generally of a sand and cobble beach, private and public seawall structures and rip rap slopes, with landside residential homes, marine service facilities, and various infrastructure. The existing pile-supported sewer line has deteriorated over the years and is at risk of failure. The timber piles and associated iron tie-down brackets which support the pipe have deteriorated and a portion of the pipe spur from Willow Avenue has a visible bow.In addition,the existing pipe's location is exposed to environmental loading conditions, such as wind and wave effects during coastal storm events. Debris impact loads during these events, such as impact from vessels in the harbor that break free from their moorings is a significant concern of the City. The City of Salem wishes to remove the existing pipe and timber pile supports and relocate the sewer line to be seaward of the existing seawall structures surrounding Willow Beach. C. EXISTING CONDITIONS The sewer line is supported on timber piles and timber framing for approximately 410 linear feet from the northern side of Dion's Yacht Yard bulkhead at the end of Glendale Street to the stone masonry seawall at the southern end of Glover Street. The exposed main sewer line is elevated above existing grade, supported by 34 bents of timber piles supporting timber framing and metal connections, for approximately 370 linear feet. The remaining approximate 40 linear feet is buried under the existing grade of the beach. The main sewer line is composed of a 20-inch diameter iron pipe, extending north from Dion's Yacht Yard bulkhead for approximately 75 linear feet and then transitions to a 24-inch diameter iron pipe for approximately 335 linear feet to the end of Glover Street where the line continues below grade.The main sewer line flows by gravity from south to north. An 8-inch diameter iron pipe lateral connection extends from the end of Willow Avenue and connects to the main sewer line,at a tee,where the pipe transitions from 20-inch diameter to 24-inch diameter.A manhole access point is located on top of the tee,where the Willow Avenue lateral connects to the main line.The lateral pipe is exposed and elevated above existing grade, supported by 9 bents of timber framing and timber piles, for approximately November 2019 ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / 2 135 linear feet, however the pipe was observed to be unsupported in some areas and sagging along its exposed length.The age of the sewer line is unknown, however limited review of permit drawings appears to indicate the structures have existed in roughly the same alignment for more than 86 years. On June 10, 2019, GZA performed a limited inspection of the existing sewer line and supports.The conditions of the sewer line supports were observed to be in overall Poor to Critical condition. The timber piles for the main sewer line were observed to be in Serious to Critical condition with various degrees of deterioration throughout the exposed height of the piles with the majority of the deterioration and section loss occurring at the mudline and the tops of the piles. In general,the timber piles for the lateral sewer line were observed to be in Satisfactory to Poor condition with minor to moderate checks and splits and several piles with moderate deterioration and section loss. Timber pile caps were observed to have various degrees of deterioration throughout. Hardware connections were observed to have minor to sever corrosion,and various connections were observed to be loose or disconnected. On October 2, 2019, GZA performed a limited inspection of the various seawalls that are located at the landward edge of Willow Beach. The inspections were limited to the above-ground accessible portions of the seawall structures.The seawalls along the perimeter of the beach vary between publicly and privately-owned structures. The construction styles vary from stacked granite block to mortared stone walls with concrete caps to concrete seawalls. Wall heights vary between 2.5-feet high and 13 feet high. Additionally, portions of the seawalls are fronted by a rip rap slope. See the Permit Drawings in Attachment 4 for locations of the seawalls and rip rap slopes. In general, the shoreline protection structures were observed to be in Satisfactory to Fair condition with some localized areas of Poor condition. D. PROPOSED WORK The project includes the demolition and removal of the existing timber pile-supported sewer line and the installation of a new sewer line mainly below grade and seaward of the existing seawalls along the perimeter of Willow Beach from Dion's Yacht Yard to Glover Street. The proposed project includes a new structure in a velocity zone or regulatory floodway and is therefore subject to MEPA review per 301 CMR 11.03(3)(b)(1)(e). Proposed Demolition The demolition work will include the decommissioning of the existing sewer line, removal of the existing sewer line, removal of timber framing members and fasteners and the removal of the existing timber piles.Approximate 80-100 timber piles will be removed from the existing site including piles along the alignment that were likely remnants from a prior sewer line support structure. It is anticipated that the work will be performed either during periods of low tide with land-based equipment or during periods of higher tides with barge-mounted cranes or other water-based equipment. This work will be performed in a manner to minimize impacts and disturbances to the resource areas at the site. Debris booms and sedimentation curtains will be placed around the work area and debris will be removed daily. Once the structure is completely removed, the area will be restored to pre-construction conditions. Proposed Relocation The proposed sewer line will be relocated to be seaward of the existing seawalls. From the existing pipe at Dion's Yacht Yard,the proposed alignment will extend west through the existing rip rap slope toward Willow Avenue. It s November 2019 I ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / 3 will then turn north toward the corner of Messervy and Green Streets. It will then follow along the bottom of the existing seawall of 29 and 29%Green Streets east and then north,through the existing rip rap slope to the seawall at the property of 16 Glover Street. It will then turn east along the base of the existing seawall at 16 Glover Street to the existing pipe alignment where it will penetrate the existing seawall at the end of Glover Street and tie into the existing sewer manhole approximately 100 feet landward of the end of Glover Street. At each change in direction, and at connections, sewer manholes will be installed, as required. The proposed concrete-encased sewer line along the seawalls will include steel sheet piles seaward, and in some locations landward, of the proposed pipe for stability and scour protection. Additionally, rip rap will be placed adjacent to the steel sheet piles to provide additional scour and impact protection to the relocated sewer line.The proposed sewer line will consist of a 24-inch diameter HDPE pipe encased in concrete and set on a base of crushed stone and filter fabric. In areas where bedrock is higher than the anticipated depth of the pipe or the embedment depth of the steel sheet piles, limited rock removal will be necessary to achieve the required depths.With the exception of a portion of the proposed alignment adjacent to 29 and 29%Green Street,the steel sheet pile,concrete and pipe structure will be buried below grade either below the existing sand beach or the existing rip rap slopes. See the Permit Drawings in Attachment 4 for details regarding the proposed construction and materials for the proposed sewer line relocation project. The proposed project will increase public infrastructure resiliency for increasing sea levels and major coastal storms. E. RESOURCE AREAS The proposed work will be performed using the best available measures to minimize the adverse impacts to the resource areas defined under the Massachusetts and Rockport's Wetlands Protection Acts. The following paragraphs will list and define the resource areas impacted by this project and describe measures to avoid and minimize any potential adverse impacts. Attachment 4 identifies the approximate location of these resource areas.Table 1 below summarizes the resource area impacts: Coastal Beach (310 CMR 10.27) Coastal Beach is defined as, "unconsolidated sediment subject to wave,tidal and coastal storm action which forms the gently sloping shore of a body of saltwater and includes tidal flats. Coastal beaches extend from the mean low water line landward to the dune line,coastal bank line or the seaward edge of exiting man-made structures, when these structures replace one of the above lives, whichever is closest to the ocean." At the Site, the Mean Low Water (MLW) line is located seaward of the existing pile-supported sewer line at approximate EL. -4.8 NAVD88. Per the definition of the Coastal Beach, the Coastal Beach extends from MLW to dune line, coastal bank line or man-made structures.At the site,the landward limit of the Coastal Beach includes the existing seawalls and rip rap slopes along the perimeter of Willow Beach. The proposed work within the Coastal Beach resource area consists of the demolition of the existing pile-supported sewer line and the installation of the new sewer line encased in concrete and with steel sheet piles for scour protection. Portions of the new sewer line alignment fall within the existing rip rap slopes and are not considered to be within the Coastal Beach resource area. Temporary impacts to the resource area will occur due to construction access. Sedimentation and erosion control measures will be in place during construction activities. The site will be restored to pre-construction conditions after the completion of work. November 2019 ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page /4 Land Containing Shellfish 310 CMR 10.34 Land Containing Shellfish is defined as, "land under the ocean, tidal flats, rocky intertidal shores,salt marshes and land under salt ponds when any such land contains shellfish." Based on available MassGIS layers, it appears a portion of the site is listed as suitable for shellfish (soft-shelled clam, quahog and European American Oyster). However, the site is listed as Prohibited for shellfish growing. Proposed work within the Land Containing Shellfish resource area includes demolition and removal of the existing pile-supported sewer line and lateral,demolition and removal of the existing drain line,and the installation of the new sewer line and drain line within steel sheet pile scour protection and concrete. The site will be restored to pre-construction conditions after the completion of the work. Coastal Bank (310 CMR 10.30) Coastal Bank is defined as, "the seaward face or side of any elevated landform, other than a coastal dune, which lies at the landward edge of a coastal beach,land subject to tidal action, or other wetland."A coastal bank can be significant to storm prevention and flood control because of its ability to dissipate storm wave energy. Coastal banks can also be significant as a source for sediment supply for littoral transport. The existing Coastal Bank at the site consists of manmade structures including rip rap slopes,granite block seawalls and concrete seawalls along the perimeter of Willow Beach.The coastal bank at the site is not a source of sediment to the coastal beach, but it does provide a vertical buffer to storm waves and surge and protects the landward homes, roads and infrastructure.The proposed work will impact portions of the existing manmade structures that make up the Coastal Bank at the site.The relocated sewer line will be installed within the limits of the existing rip rap slope adjacent to Dion's Yacht Yard as well as within portions of the rip rap slope at the seaward face of the seawall at the Green Street properties. Additionally, partial removal and reconstruction of the existing seawalls will be necessary where proposed sewer and drainpipe will penetrate the existing seawall. The proposed work will not impact the ability of the existing Coastal Bank at the site to be a vertical buffer to storm waves and surge. The Coastal Bank resource area will be restored to pre-construction conditions after the completion of the work. Land Subiect to Coastal Storm Flowaee (310 CMR 10.04) Land Subject to Coastal Storm Flowage is defined as, "land subject to any inundation caused by coastal storms up to and include that caused by the 100-year storm,surge of record or storm of record, whichever is greater." The landward portion of Willow Beach is above the MHW line and therefore within the Land Subject to Coastal Storm Flowage (LSCSF) resource area. Additionally, Glover Street and Willow Avenue, landward of the seawalls, are at an elevation within the FEMA 100-year flood zone (VE 16 NAVD88, AE 11 and AE 10). The proposed work within the LSCSF resource area include the installation of the new sewer line with steel sheet piles, concrete fill and rip rap slopes seaward of the existing seawalls.The work associated with utilities including water and drainage landward of the seawalls is considered temporary in nature as those portions of the site will be restored to paved areas.The LSCSF resource area will also be temporarily impacted by construction activities including material and equipment storage,and construction site access.The proposed work will not significantly impact the land's ability to buffer storm waves.The site will be restored to pre-construction conditions after the completion of work. November 2019 ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / 5 100-Foot Buffer Zone Buffer Zone is defined as "100 ft area horizontally (on a true lateral) landward of approved delineation of applicable wetland resource areas." The majority of the proposed work including both the demolition and removal of the existing sewer line and supports, and the relocation of the new sewer line will take place seaward of the coastal bank and within the coastal beach resource areas. Impacts to the 100-Foot Buffer Zone will be temporary in nature and will include the sewer line connection to the existing sewer manhole in Glover Street,approximately 100-feet landward of the existing seawall at the end of Glover Street and the installation of other utilities include water and drainage within the paved area of Willow Avenue. This work will include trenching within the roadway and limited excavation at the seawall for the proposed pipe penetration. Additional temporary impacts to the buffer zone include the potential storage, stockpiling and staging of material and equipment. The buffer zone will be restored to pre- construction conditions at the completion of the project. Table No. 1—Summary of Resource Area Impacts Permanent Temporary Resource Area Impact , Description Impact Description Coastal Beach ±8,242 SF Installation of Sewer Line, ±8, 599 SF Removal of Existing Pile- Drain Line,SSP and Rip Rap Supported Sewer Line and Scour Protection _ Construction Access Land Containing ±6,465 SF Installation of Sewer Line, ±5,579 SF Removal of Existing Pile- Shellfish Drain Line and SSP Supported Sewer Line and Construction Access Coastal Bank ±382 LF Installation of Sewer Line ±30 LF Wall Penetration for New and SSP Sewer Line and Drain Line Land Subject to ±3,563 SF Installation of Sewer Line ±12,730 SF Staging and Equipment, Coastal Storm Flowage above MHW Material Storage, Stockpiling 100-Foot Buffer Zone N/A N/A ±6,660 SF Staging and Equipment, Material Storage, Stockpiling F. CONSTRUCTION PROCEDURES The general construction process consists of site mobilization and preparation, establishment of site survey controls, installation of erosion and sedimentation measures, removal of existing sewer line and support structures, installation of new sewer line including steel sheet piles, concrete and rip rap, partial demolition of seawall locations for sewer line penetration, backfilling and restoration of the area, removal of erosion and sedimentation controls, demobilization, and site restoration. The proposed work will likely be accessed from the end of Willow Avenue and will be performed along the beach. It is likely that most of the staging and stockpiling will be located at the end of the paved roadway of Willow Avenue or Glover Street. It is assumed that land-based equipment will be used to perform the work and that workers will access the intertidal zone as necessary to perform the work.Temporary fill will most likely be placed '� November 2019 1 �E'r I ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / 6 along the beach area seaward of the Willow Avenue seawall to create a temporary ramp for construction equipment to be able to access the beach. This temporary ramp material will be removed at the completion of the project and the area will be returned to pre-construction conditions. It is anticipated that impacts to the existing seawalls at the end of both Glover Street and Willow Avenue will be unavoidable during the proposed relocation project. As such the seawalls will be rebuilt at the completion of the project, including new gates, fencing and guard rails as necessary.Temporary support of excavation will be utilized while installing portions of the sheet piles, pipes and concrete adjacent to privately owned seawalls.The Contractor will proceed with caution to avoid damage to these seawalls, however, damage to privately owned seawalls from construction related activities will be repaired, in-kind, by the Contractor. It is anticipated that construction equipment will include machinery suitable for installing steel sheet piles such as a vibratory hammer,excavators, backhoes,and hydraulic hammers or other equipment used for removal of ledge as necessary to be able to install the proposed sewer pipe to the necessary elevations. Concrete for the pipe encasement will likely be staged from the end of Willow Avenue and the end of Glover Street and conveyed to the placement locations utilizing a pump truck. The Contractor will have to perform work in a manner that considers the tide cycle, as much of the proposed work extends below Mean High Water. Excavations shall be kept to a minimum as necessary to complete the proposed work. Equipment,materials,debris,or other items will be stored such that they will be protected from rising water when not being utilized. The Contractor will be advised to monitor the weather forecasts and marine forecasts throughout the duration of the construction project.Areas temporarily disturbed by construction activities will be restored to pre-construction conditions at the completion of the project. G. MEASURES TO MINIMIZE RESOURCE AREA IMPACTS Measures to minimize impacts to the Resource Areas noted above include the following: • Temporary barriers,fencing and signage will be placed at the work site during construction. • Contractor will have a spill kit/absorbent pads on each piece of equipment. • Each vehicle shall be inspected daily for leaks; any leaking equipment shall be removed from the site immediately and shall not return to service until repaired. • The contractor will provide a contingency plan for approval in the event a piece of equipment is stuck to remove the equipment immediately. • The work area will be left in a condition such that rising water and/or adverse weather will not cause damage to the work area or adjacent areas. • The contractor will perform the work during favorable tides for the various aspects of the work. The contractor will work the tides to minimize impacts to resource areas. • Sedimentation and erosion control measures will be in place during construction activities. • Proposed work shall comply with all Federal, State and Local Codes and Regulations. • Proposed work shall comply with the Local Conservation Commission's Order of Conditions. November 2019 ENVIRONMENTAL NOTIFICATION FORM Salem Sewer Line Relocation Project 18.0174405.00 Page / 7 H. ALTERNATIVES ANALYSIS An alternative analysis was developed for the proposed work as follows. A summary table of this alternatives analysis has been included in Attachment 3. Alternative 1-"Do Nothing" The do-nothing alternative effectively means there is no project.The deteriorated pile-supported sewer line will remain in use and will continue to deteriorate to the point of failure.The structure will continue to be susceptible to storm action and potential for impact from debris. Alternative 2—Replace In-Kind (With Fender Piles) This alternative includes the in-kind replacement of the timber pile supports and framing members for the existing sewer line. The existing timber piles would be removed and replaced with new piles, new framing and new connections.Additionally,timber fender piles would be installed seaward of the existing alignment to provide for some protection from debris or boat impact.While this alternative is a less costly option,it would leave the sewer pipe susceptible to impacts,waves and storm surge.As such, this is not the preferred alternative for the project. Alternative 3 - Relocation of Sewer Line Landward of Seawalls This alternative includes the relocation of the sewer line seaward of the existing seawalls. This could be accomplished using either an inverted,gravity line or a pump station with a force main.The pipe would mainly be installed within the roadways between Dion's Yacht Yard and Glover Street. These alternatives would require access agreements with some private landowners and will likely require either directional drilling or large amounts of ledge excavation due to the variable elevations of bedrock in the areas of the required pipe location.As such, these options have higher construction contingency costs due to the uncertainty of the bedrock elevations and the feasibility of construction methods.Additionally, pumps stations and siphons require added maintenance and would be located within the flood zones. Alternative 4—Relocation of Sewer Line Seaward of Seawalls (Chosen Alternative) The relocation of the sewer line to be adjacent to and seaward of the existing seawalls is the chosen alternative for the project. This involves setting the proposed sewer pipe within steel sheet piles and encased in concrete. While this alternative is more costly than the in-kind replacement of the pile-supported sewer line, it provides more protection for the sewer line from impacts and wave energy. As such, this is the chosen alternative for the project. j:\174400's\18.0174405,00 salem sewer line\work\permi[ing\02_relocatlon\Ol mepa\01 salem sewer line relocation enf narrative 20191120 draft.docx