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HomeMy WebLinkAboutNOI_Yarmouth CWMP Contracts 5 and 6_Updated Aug 1 PMv Notice of Intent (NOI) Wastewater Collection Project, Phase 1: Contracts 5 and 6, including the Parkers River Crossing Town of Yarmouth August 2024 i Table of Contents Notice of Intent Form Administrative Checklist Waiver of 21-Day Requirement Figures Figure 1 – Project Location and Estimated and Priority Habitat Map Figure 2A – FEMA Floodplain Map Figure 2B – FEMA Floodplain Map Figure 2C – FEMA Floodplain Map Attachment A – Project Narrative 1.0 Project Description ..................................................................................................... 1 2.0 Existing Conditions ..................................................................................................... 2 3.0 Proposed Work within Wetland Resource Areas and Buffer Zones ........................... 4 4.0 Stormwater Management .......................................................................................... 8 5.0 Mitigation Measures .................................................................................................. 8 6.0 Compliance with Performance Standards ................................................................ 10 7.0 Variance Request ...................................................................................................... 14 8.0 Summary ................................................................................................................... 14 Attachment B – Abutters Notification Information Attachment C – Stormwater Management Report Attachment D – Photographs Attachment E – Project Plans a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)­(q) and check if: A.General Information 1. Project Location: a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28 b. City/Town YARMOUTH c. Zip Code d. Latitude 41.64930N e. Longitude 70.22300W f. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 94 2. Applicant: Individual Organization a. First Name JEFFREY b.Last Name COLBY c. Organization TOWN OF YARMOUTH d. Mailing Address 74 TOWN BROOK ROAD e. City/Town YARMOUTH f. State MA g. Zip Code 02673 h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us 3.Property Owner: more than one owner a. First Name b. Last Name c. Organization TOWN OF YARMOUTH d. Mailing Address ROUTE 1146 ROUTE 28 e. City/Town YARMOUTH f.State MA g. Zip Code 02666 h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us 4.Representative: a. First Name MAGDALENA b. Last Name LOFSTEDT c. Organization CDM SMITH INC. d. Mailing Address 75 STATE STREET, SUITE 701 e. City/Town BOSTON f. State MA g. Zip Code 02109 h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com 5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form): a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.00 6.General Project Description: THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCH DIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USING HORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS (PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTION AND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAM BEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATER MANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION. 7a.Project Type: 1. Single Family Home 2. Residential Subdivision 3.Limited Project Driveway Crossing 4.Commercial/Industrial 5.Dock/Pier 6.Utilities 7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry) 9.Transportation 10.Other 7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310 CMR 10.53 (inland)? 1.Yes No If yes, describe which limited project applies to this project: 2. Limited Project 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OF UNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION OR TRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES 8.Property recorded at the Registry of Deeds for: a.County:b.Certificate:c.Book:d.Page: BARNSTABLE 36065 19 BARNSTABLE 2839 0166 B. Buffer Zone & Resource Area Impacts (temporary & permanent) 1.Buffer Zone & Resource Area Impacts (temporary & permanent): This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland, Inland Bank, or Coastal Resource Area. 2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas) Resource Area Size of Proposed Alteration Proposed Replacement (if any) a.Bank 1. linear feet 2. linear feet b.Bordering Vegetated Wetland 1. square feet 2. square feet c.Land under Waterbodies and Waterways 1. Square feet 2. square feet 3. cubic yards dredged d.Bordering Land Subject to Flooding 1. square feet 2. square feet 3. cubic feet of flood storage lost 4. cubic feet replaced e.Isolated Land Subject to Flooding 1. square feet 2. cubic feet of flood storage lost 3. cubic feet replaced f.Riverfront Area Parkers River 1. Name of Waterway (if any) 2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only 100 ft. ­ New agricultural projects only 200 ft. ­ All other projects 3. Total area of Riverfront Area on the site of the proposed project 143572 square feet 4. Proposed Alteration of the Riverfront Area: 23965 a. total square feet 23965 b. square feet within 100 ft.c. square feet between 100 ft. and 200 ft. 5. Has an alternatives analysis been done and is it attached to this NOI?Yes No 6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No 3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35) Resource Area Size of Proposed Alteration Proposed Replacement (if any) a.Designated Port Areas Indicate size under Land under the ocean below, b.Land Under the Ocean 1. square feet 2. cubic yards dredged c.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, below d.Coastal Beaches 1. square feet 2. cubic yards beach nourishment e.Coastal Dunes 1. square feet 2. cubic yards dune nourishment f.Coastal Banks 1. linear feet g.Rocky Intertidal Shores 1. square feet h.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea. i.Land Under Salt Ponds 1. square feet 2. cubic yards dredged j.Land Containing Shellfish 1. square feet k.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above 1. cubic yards dredged l.Land Subject to Coastal Storm Flowage 35430 1. square feet 4.Restoration/Enhancement  Restoration/Replacement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please entered the additional amount here. a. square feet of BVW b. square feet of Salt Marsh 5.Projects Involves Stream Crossings  Project Involves Streams Crossings If the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings. a. number of new stream crossings b. number of replacement stream crossings C. Other Applicable Standards and Requirements Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review 1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program (NHESP)? a.Yes No If yes, include proof of mailing or hand delivery of NOI to: Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife 1 Rabbit Hill Road Westborough, MA 01581 b. Date of map:3/23/24 If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18).... c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply) 1. Percentage/acreage of property to be altered: (a) within Wetland Resource Area percentage/acreage (b) outside Resource Area percentage/acreage 2. Assessor's Map or right­of­way plan of site 3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showing existing and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work ** a.Project description (including description of impacts outside of wetland resource area & buffer zone) b. Photographs representative of the site c. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­ review/mass­endangered­species­act­mesa/mesa­fee­schedule.html ) Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above address Projects altering 10 or more acres of land, also submit: d.Vegetation cover type map of site e.Project plans showing Priority & Estimated Habitat boundaries d. OR Check One of the following 1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­ species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. Separate MESA review ongoing. a. NHESP Tracking Number b. Date submitted to NHESP 3.Separate MESA review completed. Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan. *Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review... 2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run? a. Not applicable ­ project is in inland resource area only b.Yes No If yes, include proof of mailing or hand delivery of NOI to either: South Shore ­ Cohasset to Rhode Island, and the Cape & Islands: Division of Marine Fisheries ­  Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 S. Rodney French Blvd  New Bedford, MA 02744 North Shore ­ Hull to New Hampshire: Division of Marine Fisheries ­  North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office. 3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? a.Yes No If yes, provide name of ACEC (see instructions to WPA Form 3 or DEP Website for ACEC locations). Note: electronic filers click on Website. b. ACEC Name 4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00? a.Yes No 5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)? a.Yes No 6.Is this project subject to provisions of the MassDEP Stormwater Management Standards? 1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol.2, Chapter 3) 2.A portion of the site constitutes redevelopment 3.Proprietary BMPs are included in the Stormwater Management System b.No, Explain why the project is exempt: 1.Single Family Home 2.Emergency Road Repair 3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­family housing project) with no discharge to Critical Areas. D. Additional Information Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department by regular mail delivery. 1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. 3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s). Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4.List the titles and dates for all plans and other materials submitted with this NOI. a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale: COVER CONTRACT 5 AND SHEET C­5 J. HERMAN/M. GUIDICE July 2024 SHEET EX­1: EXISTING CONDITIONS PLAN, SHEET CD­1: PUMPING STATION NO. 3 J. HEIL/Z. MILLER July 2024 SHEET M­1, M­2, M­3, AND M­4 A. WELDON/W. HOTZ JR.July 2024 SHEET PS­A­1 AND SHEET PS­A­2 C. CHAHANOVICH/B. GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 1 of 8 * ELECTRONIC COPY a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)­(q) and check if: A.General Information1. Project Location:a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28b. City/Town YARMOUTH c. Zip Coded. Latitude 41.64930N e. Longitude 70.22300Wf. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 942. Applicant:Individual Organizationa. First Name JEFFREY b.Last Name COLBYc. Organization TOWN OF YARMOUTHd. Mailing Address 74 TOWN BROOK ROADe. City/Town YARMOUTH f. State MA g. Zip Code 02673h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us3.Property Owner:more than one ownera. First Name b. Last Namec. Organization TOWN OF YARMOUTHd. Mailing Address ROUTE 1146 ROUTE 28e. City/Town YARMOUTH f.State MA g. Zip Code 02666h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us4.Representative:a. First Name MAGDALENA b. Last Name LOFSTEDTc. Organization CDM SMITH INC.d. Mailing Address 75 STATE STREET, SUITE 701e. City/Town BOSTON f. State MA g. Zip Code 02109h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form):a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.006.General Project Description: THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCH DIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USING HORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS (PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTION AND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAM BEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATER MANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION. 7a.Project Type: 1. Single Family Home 2. Residential Subdivision 3.Limited Project Driveway Crossing 4.Commercial/Industrial 5.Dock/Pier 6.Utilities 7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry) 9.Transportation 10.Other 7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310 CMR 10.53 (inland)? 1.Yes No If yes, describe which limited project applies to this project: 2. Limited Project 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OF UNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION OR TRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES 8.Property recorded at the Registry of Deeds for: a.County:b.Certificate:c.Book:d.Page: BARNSTABLE 36065 19 BARNSTABLE 2839 0166 B. Buffer Zone & Resource Area Impacts (temporary & permanent) 1.Buffer Zone & Resource Area Impacts (temporary & permanent): This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland, Inland Bank, or Coastal Resource Area. 2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas) Resource Area Size of Proposed Alteration Proposed Replacement (if any) a.Bank 1. linear feet 2. linear feet b.Bordering Vegetated Wetland 1. square feet 2. square feet c.Land under Waterbodies and Waterways 1. Square feet 2. square feet 3. cubic yards dredged d.Bordering Land Subject to Flooding 1. square feet 2. square feet 3. cubic feet of flood storage lost 4. cubic feet replaced e.Isolated Land Subject to Flooding 1. square feet 2. cubic feet of flood storage lost 3. cubic feet replaced f.Riverfront Area Parkers River 1. Name of Waterway (if any) 2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only 100 ft. ­ New agricultural projects only 200 ft. ­ All other projects 3. Total area of Riverfront Area on the site of the proposed project 143572 square feet 4. Proposed Alteration of the Riverfront Area: 23965 a. total square feet 23965 b. square feet within 100 ft.c. square feet between 100 ft. and 200 ft. 5. Has an alternatives analysis been done and is it attached to this NOI?Yes No 6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No 3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35) Resource Area Size of Proposed Alteration Proposed Replacement (if any) a.Designated Port Areas Indicate size under Land under the ocean below, b.Land Under the Ocean 1. square feet 2. cubic yards dredged c.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, below d.Coastal Beaches 1. square feet 2. cubic yards beach nourishment e.Coastal Dunes 1. square feet 2. cubic yards dune nourishment f.Coastal Banks 1. linear feet g.Rocky Intertidal Shores 1. square feet h.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea. i.Land Under Salt Ponds 1. square feet 2. cubic yards dredged j.Land Containing Shellfish 1. square feet k.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above 1. cubic yards dredged l.Land Subject to Coastal Storm Flowage 35430 1. square feet 4.Restoration/Enhancement  Restoration/Replacement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please entered the additional amount here. a. square feet of BVW b. square feet of Salt Marsh 5.Projects Involves Stream Crossings  Project Involves Streams Crossings If the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings. a. number of new stream crossings b. number of replacement stream crossings C. Other Applicable Standards and Requirements Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review 1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program (NHESP)? a.Yes No If yes, include proof of mailing or hand delivery of NOI to: Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife 1 Rabbit Hill Road Westborough, MA 01581 b. Date of map:3/23/24 If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18).... c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply) 1. Percentage/acreage of property to be altered: (a) within Wetland Resource Area percentage/acreage (b) outside Resource Area percentage/acreage 2. Assessor's Map or right­of­way plan of site 3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showing existing and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work ** a.Project description (including description of impacts outside of wetland resource area & buffer zone) b. Photographs representative of the site c. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­ review/mass­endangered­species­act­mesa/mesa­fee­schedule.html ) Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above address Projects altering 10 or more acres of land, also submit: d.Vegetation cover type map of site e.Project plans showing Priority & Estimated Habitat boundaries d. OR Check One of the following 1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­ species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. Separate MESA review ongoing. a. NHESP Tracking Number b. Date submitted to NHESP 3.Separate MESA review completed. Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan. *Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review... 2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run? a. Not applicable ­ project is in inland resource area only b.Yes No If yes, include proof of mailing or hand delivery of NOI to either: South Shore ­ Cohasset to Rhode Island, and the Cape & Islands: Division of Marine Fisheries ­  Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 S. Rodney French Blvd  New Bedford, MA 02744 North Shore ­ Hull to New Hampshire: Division of Marine Fisheries ­  North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office. 3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? a.Yes No If yes, provide name of ACEC (see instructions to WPA Form 3 or DEP Website for ACEC locations). Note: electronic filers click on Website. b. ACEC Name 4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00? a.Yes No 5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)? a.Yes No 6.Is this project subject to provisions of the MassDEP Stormwater Management Standards? 1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol.2, Chapter 3) 2.A portion of the site constitutes redevelopment 3.Proprietary BMPs are included in the Stormwater Management System b.No, Explain why the project is exempt: 1.Single Family Home 2.Emergency Road Repair 3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­family housing project) with no discharge to Critical Areas. D. Additional Information Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department by regular mail delivery. 1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. 3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s). Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4.List the titles and dates for all plans and other materials submitted with this NOI. a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale: COVER CONTRACT 5 AND SHEET C­5 J. HERMAN/M. GUIDICE July 2024 SHEET EX­1: EXISTING CONDITIONS PLAN, SHEET CD­1: PUMPING STATION NO. 3 J. HEIL/Z. MILLER July 2024 SHEET M­1, M­2, M­3, AND M­4 A. WELDON/W. HOTZ JR.July 2024 SHEET PS­A­1 AND SHEET PS­A­2 C. CHAHANOVICH/B. GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 2 of 8 * ELECTRONIC COPY a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)­(q) and check if: A.General Information1. Project Location:a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28b. City/Town YARMOUTH c. Zip Coded. Latitude 41.64930N e. Longitude 70.22300Wf. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 942. Applicant:Individual Organizationa. First Name JEFFREY b.Last Name COLBYc. Organization TOWN OF YARMOUTHd. Mailing Address 74 TOWN BROOK ROADe. City/Town YARMOUTH f. State MA g. Zip Code 02673h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us3.Property Owner:more than one ownera. First Name b. Last Namec. Organization TOWN OF YARMOUTHd. Mailing Address ROUTE 1146 ROUTE 28e. City/Town YARMOUTH f.State MA g. Zip Code 02666h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us4.Representative:a. First Name MAGDALENA b. Last Name LOFSTEDTc. Organization CDM SMITH INC.d. Mailing Address 75 STATE STREET, SUITE 701e. City/Town BOSTON f. State MA g. Zip Code 02109h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form):a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.006.General Project Description:THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCHDIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USINGHORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS(PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTIONAND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAMBEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATERMANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION.7a.Project Type:1. Single Family Home 2. Residential Subdivision3.Limited Project Driveway Crossing 4.Commercial/Industrial5.Dock/Pier 6.Utilities7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry)9.Transportation 10.Other7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310CMR 10.53 (inland)?1.Yes No If yes, describe which limited project applies to this project:2. LimitedProject 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OFUNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION ORTRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES8.Property recorded at the Registry of Deeds for:a.County:b.Certificate:c.Book:d.Page:BARNSTABLE 36065 19BARNSTABLE28390166B. Buffer Zone & Resource Area Impacts (temporary & permanent)1.Buffer Zone & Resource Area Impacts (temporary & permanent):This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland,Inland Bank, or Coastal Resource Area.2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Bank 1. linear feet 2. linear feetb.Bordering Vegetated Wetland 1. square feet 2. square feetc.Land under Waterbodies and Waterways 1. Square feet 2. square feet3. cubic yards dredgedd.Bordering Land Subject to Flooding 1. square feet 2. square feet 3. cubic feet of flood storage lost 4. cubic feet replaced e.Isolated Land Subject to Flooding 1. square feet 2. cubic feet of flood storage lost 3. cubic feet replaced f.Riverfront Area Parkers River 1. Name of Waterway (if any) 2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only 100 ft. ­ New agricultural projects only 200 ft. ­ All other projects 3. Total area of Riverfront Area on the site of the proposed project 143572 square feet 4. Proposed Alteration of the Riverfront Area: 23965 a. total square feet 23965 b. square feet within 100 ft.c. square feet between 100 ft. and 200 ft. 5. Has an alternatives analysis been done and is it attached to this NOI?Yes No 6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No 3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35) Resource Area Size of Proposed Alteration Proposed Replacement (if any) a.Designated Port Areas Indicate size under Land under the ocean below, b.Land Under the Ocean 1. square feet 2. cubic yards dredged c.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, below d.Coastal Beaches 1. square feet 2. cubic yards beach nourishment e.Coastal Dunes 1. square feet 2. cubic yards dune nourishment f.Coastal Banks 1. linear feet g.Rocky Intertidal Shores 1. square feet h.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea. i.Land Under Salt Ponds 1. square feet 2. cubic yards dredged j.Land Containing Shellfish 1. square feet k.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above 1. cubic yards dredged l.Land Subject to Coastal Storm Flowage 35430 1. square feet 4.Restoration/Enhancement  Restoration/Replacement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please entered the additional amount here. a. square feet of BVW b. square feet of Salt Marsh 5.Projects Involves Stream Crossings  Project Involves Streams Crossings If the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings. a. number of new stream crossings b. number of replacement stream crossings C. Other Applicable Standards and Requirements Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review 1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program (NHESP)? a.Yes No If yes, include proof of mailing or hand delivery of NOI to: Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife 1 Rabbit Hill Road Westborough, MA 01581 b. Date of map:3/23/24 If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18).... c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply) 1. Percentage/acreage of property to be altered: (a) within Wetland Resource Area percentage/acreage (b) outside Resource Area percentage/acreage 2. Assessor's Map or right­of­way plan of site 3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showing existing and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work ** a.Project description (including description of impacts outside of wetland resource area & buffer zone) b. Photographs representative of the site c. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­ review/mass­endangered­species­act­mesa/mesa­fee­schedule.html ) Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above address Projects altering 10 or more acres of land, also submit: d.Vegetation cover type map of site e.Project plans showing Priority & Estimated Habitat boundaries d. OR Check One of the following 1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­ species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. Separate MESA review ongoing. a. NHESP Tracking Number b. Date submitted to NHESP 3.Separate MESA review completed. Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan. *Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review... 2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run? a. Not applicable ­ project is in inland resource area only b.Yes No If yes, include proof of mailing or hand delivery of NOI to either: South Shore ­ Cohasset to Rhode Island, and the Cape & Islands: Division of Marine Fisheries ­  Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 S. Rodney French Blvd  New Bedford, MA 02744 North Shore ­ Hull to New Hampshire: Division of Marine Fisheries ­  North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office. 3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? a.Yes No If yes, provide name of ACEC (see instructions to WPA Form 3 or DEP Website for ACEC locations). Note: electronic filers click on Website. b. ACEC Name 4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00? a.Yes No 5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)? a.Yes No 6.Is this project subject to provisions of the MassDEP Stormwater Management Standards? 1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol.2, Chapter 3) 2.A portion of the site constitutes redevelopment 3.Proprietary BMPs are included in the Stormwater Management System b.No, Explain why the project is exempt: 1.Single Family Home 2.Emergency Road Repair 3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­family housing project) with no discharge to Critical Areas. D. Additional Information Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department by regular mail delivery. 1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. 3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s). Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4.List the titles and dates for all plans and other materials submitted with this NOI. a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale: COVER CONTRACT 5 AND SHEET C­5 J. HERMAN/M. GUIDICE July 2024 SHEET EX­1: EXISTING CONDITIONS PLAN, SHEET CD­1: PUMPING STATION NO. 3 J. HEIL/Z. MILLER July 2024 SHEET M­1, M­2, M­3, AND M­4 A. WELDON/W. HOTZ JR.July 2024 SHEET PS­A­1 AND SHEET PS­A­2 C. CHAHANOVICH/B. GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 3 of 8 * ELECTRONIC COPY a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)­(q) and check if: A.General Information1. Project Location:a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28b. City/Town YARMOUTH c. Zip Coded. Latitude 41.64930N e. Longitude 70.22300Wf. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 942. Applicant:Individual Organizationa. First Name JEFFREY b.Last Name COLBYc. Organization TOWN OF YARMOUTHd. Mailing Address 74 TOWN BROOK ROADe. City/Town YARMOUTH f. State MA g. Zip Code 02673h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us3.Property Owner:more than one ownera. First Name b. Last Namec. Organization TOWN OF YARMOUTHd. Mailing Address ROUTE 1146 ROUTE 28e. City/Town YARMOUTH f.State MA g. Zip Code 02666h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us4.Representative:a. First Name MAGDALENA b. Last Name LOFSTEDTc. Organization CDM SMITH INC.d. Mailing Address 75 STATE STREET, SUITE 701e. City/Town BOSTON f. State MA g. Zip Code 02109h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form):a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.006.General Project Description:THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCHDIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USINGHORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS(PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTIONAND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAMBEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATERMANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION.7a.Project Type:1. Single Family Home 2. Residential Subdivision3.Limited Project Driveway Crossing 4.Commercial/Industrial5.Dock/Pier 6.Utilities7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry)9.Transportation 10.Other7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310CMR 10.53 (inland)?1.Yes No If yes, describe which limited project applies to this project:2. LimitedProject 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OFUNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION ORTRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES8.Property recorded at the Registry of Deeds for:a.County:b.Certificate:c.Book:d.Page:BARNSTABLE 36065 19BARNSTABLE28390166B. Buffer Zone & Resource Area Impacts (temporary & permanent)1.Buffer Zone & Resource Area Impacts (temporary & permanent):This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland,Inland Bank, or Coastal Resource Area.2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Bank 1. linear feet 2. linear feetb.Bordering Vegetated Wetland 1. square feet 2. square feetc.Land under Waterbodies and Waterways 1. Square feet 2. square feet3. cubic yards dredgedd.Bordering Land Subject to Flooding 1. square feet 2. square feet3. cubic feet of flood storage lost 4. cubic feet replacede.Isolated Land Subject to Flooding 1. square feet2. cubic feet of flood storage lost 3. cubic feet replacedf.Riverfront Area Parkers River1. Name of Waterway (if any)2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only100 ft. ­ New agricultural projects only200 ft. ­ All other projects3. Total area of Riverfront Area on the site of the proposed project 143572square feet4. Proposed Alteration of the Riverfront Area:23965a. total square feet 23965b. square feet within 100 ft.c. square feet between 100 ft.and 200 ft.5. Has an alternatives analysis been done and is it attached to this NOI?Yes No6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Designated Port Areas Indicate size under Land under the ocean below,b.Land Under the Ocean 1. square feet2. cubic yards dredgedc.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, belowd.Coastal Beaches 1. square feet 2. cubic yards beach nourishmente.Coastal Dunes 1. square feet 2. cubic yards dune nourishmentf.Coastal Banks 1. linear feetg.Rocky Intertidal Shores 1. square feeth.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea.i.Land Under Salt Ponds 1. square feet2. cubic yards dredged j.Land Containing Shellfish 1. square feet k.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above 1. cubic yards dredged l.Land Subject to Coastal Storm Flowage 35430 1. square feet 4.Restoration/Enhancement  Restoration/Replacement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please entered the additional amount here. a. square feet of BVW b. square feet of Salt Marsh 5.Projects Involves Stream Crossings  Project Involves Streams Crossings If the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings. a. number of new stream crossings b. number of replacement stream crossings C. Other Applicable Standards and Requirements Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review 1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program (NHESP)? a.Yes No If yes, include proof of mailing or hand delivery of NOI to: Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife 1 Rabbit Hill Road Westborough, MA 01581 b. Date of map:3/23/24 If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18).... c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply) 1. Percentage/acreage of property to be altered: (a) within Wetland Resource Area percentage/acreage (b) outside Resource Area percentage/acreage 2. Assessor's Map or right­of­way plan of site 3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showing existing and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work ** a.Project description (including description of impacts outside of wetland resource area & buffer zone) b. Photographs representative of the site c. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­ review/mass­endangered­species­act­mesa/mesa­fee­schedule.html ) Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above address Projects altering 10 or more acres of land, also submit: d.Vegetation cover type map of site e.Project plans showing Priority & Estimated Habitat boundaries d. OR Check One of the following 1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­ species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. Separate MESA review ongoing. a. NHESP Tracking Number b. Date submitted to NHESP 3.Separate MESA review completed. Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan. *Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review... 2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run? a. Not applicable ­ project is in inland resource area only b.Yes No If yes, include proof of mailing or hand delivery of NOI to either: South Shore ­ Cohasset to Rhode Island, and the Cape & Islands: Division of Marine Fisheries ­  Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 S. Rodney French Blvd  New Bedford, MA 02744 North Shore ­ Hull to New Hampshire: Division of Marine Fisheries ­  North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office. 3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? a.Yes No If yes, provide name of ACEC (see instructions to WPA Form 3 or DEP Website for ACEC locations). Note: electronic filers click on Website. b. ACEC Name 4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00? a.Yes No 5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)? a.Yes No 6.Is this project subject to provisions of the MassDEP Stormwater Management Standards? 1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol.2, Chapter 3) 2.A portion of the site constitutes redevelopment 3.Proprietary BMPs are included in the Stormwater Management System b.No, Explain why the project is exempt: 1.Single Family Home 2.Emergency Road Repair 3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­family housing project) with no discharge to Critical Areas. D. Additional Information Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department by regular mail delivery. 1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. 3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s). Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4.List the titles and dates for all plans and other materials submitted with this NOI. a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale: COVER CONTRACT 5 AND SHEET C­5 J. HERMAN/M. GUIDICE July 2024 SHEET EX­1: EXISTING CONDITIONS PLAN, SHEET CD­1: PUMPING STATION NO. 3 J. HEIL/Z. MILLER July 2024 SHEET M­1, M­2, M­3, AND M­4 A. WELDON/W. HOTZ JR.July 2024 SHEET PS­A­1 AND SHEET PS­A­2 C. CHAHANOVICH/B. GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 4 of 8 * ELECTRONIC COPY a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)­(q) and check if: A.General Information1. Project Location:a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28b. City/Town YARMOUTH c. Zip Coded. Latitude 41.64930N e. Longitude 70.22300Wf. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 942. Applicant:Individual Organizationa. First Name JEFFREY b.Last Name COLBYc. Organization TOWN OF YARMOUTHd. Mailing Address 74 TOWN BROOK ROADe. City/Town YARMOUTH f. State MA g. Zip Code 02673h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us3.Property Owner:more than one ownera. First Name b. Last Namec. Organization TOWN OF YARMOUTHd. Mailing Address ROUTE 1146 ROUTE 28e. City/Town YARMOUTH f.State MA g. Zip Code 02666h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us4.Representative:a. First Name MAGDALENA b. Last Name LOFSTEDTc. Organization CDM SMITH INC.d. Mailing Address 75 STATE STREET, SUITE 701e. City/Town BOSTON f. State MA g. Zip Code 02109h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form):a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.006.General Project Description:THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCHDIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USINGHORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS(PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTIONAND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAMBEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATERMANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION.7a.Project Type:1. Single Family Home 2. Residential Subdivision3.Limited Project Driveway Crossing 4.Commercial/Industrial5.Dock/Pier 6.Utilities7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry)9.Transportation 10.Other7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310CMR 10.53 (inland)?1.Yes No If yes, describe which limited project applies to this project:2. LimitedProject 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OFUNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION ORTRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES8.Property recorded at the Registry of Deeds for:a.County:b.Certificate:c.Book:d.Page:BARNSTABLE 36065 19BARNSTABLE28390166B. Buffer Zone & Resource Area Impacts (temporary & permanent)1.Buffer Zone & Resource Area Impacts (temporary & permanent):This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland,Inland Bank, or Coastal Resource Area.2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Bank 1. linear feet 2. linear feetb.Bordering Vegetated Wetland 1. square feet 2. square feetc.Land under Waterbodies and Waterways 1. Square feet 2. square feet3. cubic yards dredgedd.Bordering Land Subject to Flooding 1. square feet 2. square feet3. cubic feet of flood storage lost 4. cubic feet replacede.Isolated Land Subject to Flooding 1. square feet2. cubic feet of flood storage lost 3. cubic feet replacedf.Riverfront Area Parkers River1. Name of Waterway (if any)2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only100 ft. ­ New agricultural projects only200 ft. ­ All other projects3. Total area of Riverfront Area on the site of the proposed project 143572square feet4. Proposed Alteration of the Riverfront Area:23965a. total square feet 23965b. square feet within 100 ft.c. square feet between 100 ft.and 200 ft.5. Has an alternatives analysis been done and is it attached to this NOI?Yes No6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Designated Port Areas Indicate size under Land under the ocean below,b.Land Under the Ocean 1. square feet2. cubic yards dredgedc.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, belowd.Coastal Beaches 1. square feet 2. cubic yards beach nourishmente.Coastal Dunes 1. square feet 2. cubic yards dune nourishmentf.Coastal Banks 1. linear feetg.Rocky Intertidal Shores 1. square feeth.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea.i.Land Under Salt Ponds 1. square feet2. cubic yards dredgedj.Land Containing Shellfish 1. square feetk.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland LandUnder Waterbodies and Waterways, above1. cubic yards dredgedl.Land Subject to CoastalStorm Flowage 354301. square feet4.Restoration/Enhancement Restoration/ReplacementIf the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has beenentered in Section B.2.b or B.3.h above, please entered the additional amount here.a. square feet of BVW b. square feet of Salt Marsh5.Projects Involves Stream Crossings Project Involves Streams CrossingsIf the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings.a. number of new stream crossings b. number of replacement stream crossingsC. Other Applicable Standards and RequirementsStreamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recentEstimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program(NHESP)?a.Yes NoIf yes, include proof of mailing or hand delivery of NOI to:Natural Heritage and Endangered SpeciesProgramDivision of Fisheries and Wildlife1 Rabbit Hill RoadWestborough, MA 01581b. Date of map:3/23/24If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18)....c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply)1. Percentage/acreage of property to be altered:(a) within Wetland Resource Area percentage/acreage(b) outside Resource Area percentage/acreage2. Assessor's Map or right­of­way plan of site3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showingexisting and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work ** a.Project description (including description of impacts outside of wetland resource area & buffer zone) b. Photographs representative of the site c. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­ review/mass­endangered­species­act­mesa/mesa­fee­schedule.html ) Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above address Projects altering 10 or more acres of land, also submit: d.Vegetation cover type map of site e.Project plans showing Priority & Estimated Habitat boundaries d. OR Check One of the following 1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­ species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. Separate MESA review ongoing. a. NHESP Tracking Number b. Date submitted to NHESP 3.Separate MESA review completed. Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan. *Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review... 2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run? a. Not applicable ­ project is in inland resource area only b.Yes No If yes, include proof of mailing or hand delivery of NOI to either: South Shore ­ Cohasset to Rhode Island, and the Cape & Islands: Division of Marine Fisheries ­  Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 S. Rodney French Blvd  New Bedford, MA 02744 North Shore ­ Hull to New Hampshire: Division of Marine Fisheries ­  North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office. For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office. 3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)? a.Yes No If yes, provide name of ACEC (see instructions to WPA Form 3 or DEP Website for ACEC locations). Note: electronic filers click on Website. b. ACEC Name 4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in the Massachusetts Surface Water Quality Standards, 314 CMR 4.00? a.Yes No 5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)? a.Yes No 6.Is this project subject to provisions of the MassDEP Stormwater Management Standards? 1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol.2, Chapter 3) 2.A portion of the site constitutes redevelopment 3.Proprietary BMPs are included in the Stormwater Management System b.No, Explain why the project is exempt: 1.Single Family Home 2.Emergency Road Repair 3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­family housing project) with no discharge to Critical Areas. D. Additional Information Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department by regular mail delivery. 1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. 3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s). Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4.List the titles and dates for all plans and other materials submitted with this NOI. a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale: COVER CONTRACT 5 AND SHEET C­5 J. HERMAN/M. GUIDICE July 2024 SHEET EX­1: EXISTING CONDITIONS PLAN, SHEET CD­1: PUMPING STATION NO. 3 J. HEIL/Z. MILLER July 2024 SHEET M­1, M­2, M­3, AND M­4 A. WELDON/W. HOTZ JR.July 2024 SHEET PS­A­1 AND SHEET PS­A­2 C. CHAHANOVICH/B. GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 5 of 8 * ELECTRONIC COPY a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)­(q) and check if: A.General Information1. Project Location:a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28b. City/Town YARMOUTH c. Zip Coded. Latitude 41.64930N e. Longitude 70.22300Wf. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 942. Applicant:Individual Organizationa. First Name JEFFREY b.Last Name COLBYc. Organization TOWN OF YARMOUTHd. Mailing Address 74 TOWN BROOK ROADe. City/Town YARMOUTH f. State MA g. Zip Code 02673h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us3.Property Owner:more than one ownera. First Name b. Last Namec. Organization TOWN OF YARMOUTHd. Mailing Address ROUTE 1146 ROUTE 28e. City/Town YARMOUTH f.State MA g. Zip Code 02666h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us4.Representative:a. First Name MAGDALENA b. Last Name LOFSTEDTc. Organization CDM SMITH INC.d. Mailing Address 75 STATE STREET, SUITE 701e. City/Town BOSTON f. State MA g. Zip Code 02109h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form):a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.006.General Project Description:THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCHDIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USINGHORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS(PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTIONAND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAMBEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATERMANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION.7a.Project Type:1. Single Family Home 2. Residential Subdivision3.Limited Project Driveway Crossing 4.Commercial/Industrial5.Dock/Pier 6.Utilities7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry)9.Transportation 10.Other7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310CMR 10.53 (inland)?1.Yes No If yes, describe which limited project applies to this project:2. LimitedProject 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OFUNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION ORTRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES8.Property recorded at the Registry of Deeds for:a.County:b.Certificate:c.Book:d.Page:BARNSTABLE 36065 19BARNSTABLE28390166B. Buffer Zone & Resource Area Impacts (temporary & permanent)1.Buffer Zone & Resource Area Impacts (temporary & permanent):This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland,Inland Bank, or Coastal Resource Area.2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Bank 1. linear feet 2. linear feetb.Bordering Vegetated Wetland 1. square feet 2. square feetc.Land under Waterbodies and Waterways 1. Square feet 2. square feet3. cubic yards dredgedd.Bordering Land Subject to Flooding 1. square feet 2. square feet3. cubic feet of flood storage lost 4. cubic feet replacede.Isolated Land Subject to Flooding 1. square feet2. cubic feet of flood storage lost 3. cubic feet replacedf.Riverfront Area Parkers River1. Name of Waterway (if any)2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only100 ft. ­ New agricultural projects only200 ft. ­ All other projects3. Total area of Riverfront Area on the site of the proposed project 143572square feet4. Proposed Alteration of the Riverfront Area:23965a. total square feet 23965b. square feet within 100 ft.c. square feet between 100 ft.and 200 ft.5. Has an alternatives analysis been done and is it attached to this NOI?Yes No6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Designated Port Areas Indicate size under Land under the ocean below,b.Land Under the Ocean 1. square feet2. cubic yards dredgedc.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, belowd.Coastal Beaches 1. square feet 2. cubic yards beach nourishmente.Coastal Dunes 1. square feet 2. cubic yards dune nourishmentf.Coastal Banks 1. linear feetg.Rocky Intertidal Shores 1. square feeth.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea.i.Land Under Salt Ponds 1. square feet2. cubic yards dredgedj.Land Containing Shellfish 1. square feetk.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland LandUnder Waterbodies and Waterways, above1. cubic yards dredgedl.Land Subject to CoastalStorm Flowage 354301. square feet4.Restoration/Enhancement Restoration/ReplacementIf the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has beenentered in Section B.2.b or B.3.h above, please entered the additional amount here.a. square feet of BVW b. square feet of Salt Marsh5.Projects Involves Stream Crossings Project Involves Streams CrossingsIf the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings.a. number of new stream crossings b. number of replacement stream crossingsC. Other Applicable Standards and RequirementsStreamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recentEstimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program(NHESP)?a.Yes NoIf yes, include proof of mailing or hand delivery of NOI to:Natural Heritage and Endangered SpeciesProgramDivision of Fisheries and Wildlife1 Rabbit Hill RoadWestborough, MA 01581b. Date of map:3/23/24If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18)....c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply)1. Percentage/acreage of property to be altered:(a) within Wetland Resource Area percentage/acreage(b) outside Resource Area percentage/acreage2. Assessor's Map or right­of­way plan of site3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showingexisting and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work **a.Project description (including description of impacts outside of wetland resource area & buffer zone)b. Photographs representative of the sitec. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­review/mass­endangered­species­act­mesa/mesa­fee­schedule.html )Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above addressProjects altering 10 or more acres of land, also submit:d.Vegetation cover type map of sitee.Project plans showing Priority & Estimated Habitat boundariesd. OR Check One of the following1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR10.37 and 10.59.)2. Separate MESA review ongoing.a. NHESP Tracking Numberb. Date submitted to NHESP3.Separate MESA review completed.Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan.*Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review...2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run?a. Not applicable ­ project is in inland resource area onlyb.Yes NoIf yes, include proof of mailing or hand delivery of NOI to either:South Shore ­ Cohasset to Rhode Island, and the Cape & Islands:Division of Marine Fisheries ­ Southeast Marine Fisheries StationAttn: Environmental Reviewer836 S. Rodney French Blvd New Bedford, MA 02744 North Shore ­ Hull to New Hampshire:Division of Marine Fisheries ­ North Shore OfficeAttn: Environmental Reviewer30 Emerson AvenueGloucester, MA 01930If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office.For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office.3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)?a.Yes No If yes, provide name of ACEC (see instructions to WPAForm 3 or DEP Website for ACEC locations). Note:electronic filers click on Website.b. ACEC Name4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in theMassachusetts Surface Water Quality Standards, 314 CMR 4.00?a.Yes No5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, § 40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)? a.Yes No 6.Is this project subject to provisions of the MassDEP Stormwater Management Standards? 1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol.2, Chapter 3) 2.A portion of the site constitutes redevelopment 3.Proprietary BMPs are included in the Stormwater Management System b.No, Explain why the project is exempt: 1.Single Family Home 2.Emergency Road Repair 3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­family housing project) with no discharge to Critical Areas. D. Additional Information Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department by regular mail delivery. 1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for the Conservation Commission and the Department to locate the site. (Electronic filers may omit this item.) 2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland [BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area. 3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s). Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology. 4.List the titles and dates for all plans and other materials submitted with this NOI. a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale: COVER CONTRACT 5 AND SHEET C­5 J. HERMAN/M. GUIDICE July 2024 SHEET EX­1: EXISTING CONDITIONS PLAN, SHEET CD­1: PUMPING STATION NO. 3 J. HEIL/Z. MILLER July 2024 SHEET M­1, M­2, M­3, AND M­4 A. WELDON/W. HOTZ JR.July 2024 SHEET PS­A­1 AND SHEET PS­A­2 C. CHAHANOVICH/B. GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 6 of 8 * ELECTRONIC COPY a.Yes, Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR10.05(6)(k)­(q) and check if:A.General Information1. Project Location:a. Street Address 316, 669, 674, 700 AND 728 ROUTE 28b. City/Town YARMOUTH c. Zip Coded. Latitude 41.64930N e. Longitude 70.22300Wf. Map/Plat #30, 32, 32, 32, 32 g.Parcel/Lot #153. 122, 92, 93, 942. Applicant:Individual Organizationa. First Name JEFFREY b.Last Name COLBYc. Organization TOWN OF YARMOUTHd. Mailing Address 74 TOWN BROOK ROADe. City/Town YARMOUTH f. State MA g. Zip Code 02673h. Phone Number 508­398­2231 i. Fax 508­398­0836 j. Email jcolby@yarmouth.ma.us3.Property Owner:more than one ownera. First Name b. Last Namec. Organization TOWN OF YARMOUTHd. Mailing Address ROUTE 1146 ROUTE 28e. City/Town YARMOUTH f.State MA g. Zip Code 02666h. Phone Number 508­398­2231 i. Fax 508­398­0836 j.Email jcolby@yarmouth.ma.us4.Representative:a. First Name MAGDALENA b. Last Name LOFSTEDTc. Organization CDM SMITH INC.d. Mailing Address 75 STATE STREET, SUITE 701e. City/Town BOSTON f. State MA g. Zip Code 02109h.Phone Number 617­452­6597 i.Fax j.Email lofstedtmh@cdmsmith.com5.Total WPA Fee Paid (Automatically inserted from NOI Wetland Fee Transmittal Form):a.Total Fee Paid 0.00 b.State Fee Paid 0.00 c.City/Town Fee Paid 0.006.General Project Description:THE TOWN OF YARMOUTH (THE TOWN) IS PROPOSING TO INSTALL A NEW 200­FOOT LONG 18­INCHDIAMETER GRAVITY SEWER (WITHIN 30­INCH CASING/CARRIER PIPE) BENEATH THE PARKER RIVER USINGHORIZONTAL DIRECTIONAL DRILLING (HDD) AND CONSTRUCT THREE NEW SEWER PUMPING STATIONS(PS1, PS2, AND PS3). THE PROPOSED WORK IS PART OF THE LARGER OVERALL WASTEWATER COLLECTIONAND CONVEYANCE SYSTEM BEING DESIGNED FOR PHASE 1 OF THE TOWN­WIDE WASTEWATER PROGRAMBEING IMPLEMENTED IN ACCORDANCE WITH THE TOWN?S APPROVED COMPREHENSIVE WASTEWATERMANAGEMENT PLAN (CWMP). PLEASE REFER TO ATTACHMENT A FOR A DETAILED PROJECT DESCRIPTION.7a.Project Type:1. Single Family Home 2. Residential Subdivision3.Limited Project Driveway Crossing 4.Commercial/Industrial5.Dock/Pier 6.Utilities7.Coastal Engineering Structure 8.Agriculture (eg., cranberries, forestry)9.Transportation 10.Other7b.Is any portion of the proposed activity eligible to be treated as a limited project subject to 310 CMR 10.24 (coastal) or 310CMR 10.53 (inland)?1.Yes No If yes, describe which limited project applies to this project:2. LimitedProject 10.53(3) (D) ­ THE CONSTRUCTION, RECONSTRUCTION, OPERATION AND MAINTENANCE OFUNDERGROUND AND OVERHEAD PUBLIC UTILITIES, SUCH AS ELECTRICAL DISTRIBUTION ORTRANSMISSION LINES, OR COMMUNICATION, SEWER, WATER AND NATURAL GAS LINES8.Property recorded at the Registry of Deeds for:a.County:b.Certificate:c.Book:d.Page:BARNSTABLE 36065 19BARNSTABLE28390166B. Buffer Zone & Resource Area Impacts (temporary & permanent)1.Buffer Zone & Resource Area Impacts (temporary & permanent):This is a Buffer Zone only project ­ Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland,Inland Bank, or Coastal Resource Area.2.Inland Resource Areas: (See 310 CMR 10.54 ­ 10.58, if not applicable, go to Section B.3. Coastal Resource Areas)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Bank 1. linear feet 2. linear feetb.Bordering Vegetated Wetland 1. square feet 2. square feetc.Land under Waterbodies and Waterways 1. Square feet 2. square feet3. cubic yards dredgedd.Bordering Land Subject to Flooding 1. square feet 2. square feet3. cubic feet of flood storage lost 4. cubic feet replacede.Isolated Land Subject to Flooding 1. square feet2. cubic feet of flood storage lost 3. cubic feet replacedf.Riverfront Area Parkers River1. Name of Waterway (if any)2. Width of Riverfront Area (check one)25 ft. ­ Designated Densely Developed Areas only100 ft. ­ New agricultural projects only200 ft. ­ All other projects3. Total area of Riverfront Area on the site of the proposed project 143572square feet4. Proposed Alteration of the Riverfront Area:23965a. total square feet 23965b. square feet within 100 ft.c. square feet between 100 ft.and 200 ft.5. Has an alternatives analysis been done and is it attached to this NOI?Yes No6. Was the lot where the activity is proposed created prior to August 1, 1996?Yes No3.Coastal Resource Areas: (See 310 CMR 10.25 ­ 10.35)Resource Area Size of Proposed Alteration Proposed Replacement (if any)a.Designated Port Areas Indicate size under Land under the ocean below,b.Land Under the Ocean 1. square feet2. cubic yards dredgedc.Barrier Beaches Indicate size under Coastal Beaches and/or Coatstal Dunes, belowd.Coastal Beaches 1. square feet 2. cubic yards beach nourishmente.Coastal Dunes 1. square feet 2. cubic yards dune nourishmentf.Coastal Banks 1. linear feetg.Rocky Intertidal Shores 1. square feeth.Salt Marshes 1. square feet 2. sq ft restoration, rehab, crea.i.Land Under Salt Ponds 1. square feet2. cubic yards dredgedj.Land Containing Shellfish 1. square feetk.Fish Runs Indicate size under Coastal Banks, Inland Bank, Land Under the Ocean, and/or inland LandUnder Waterbodies and Waterways, above1. cubic yards dredgedl.Land Subject to CoastalStorm Flowage 354301. square feet4.Restoration/Enhancement Restoration/ReplacementIf the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has beenentered in Section B.2.b or B.3.h above, please entered the additional amount here.a. square feet of BVW b. square feet of Salt Marsh5.Projects Involves Stream Crossings Project Involves Streams CrossingsIf the project involves Stream Crossings, please enter the number of new stream crossings/number of replacement stream crossings.a. number of new stream crossings b. number of replacement stream crossingsC. Other Applicable Standards and RequirementsStreamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review1.Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recentEstimated Habitat Map of State­Listed Rare Wetland Wildlife published by the Natural Heritage of Endangered Species program(NHESP)?a.Yes NoIf yes, include proof of mailing or hand delivery of NOI to:Natural Heritage and Endangered SpeciesProgramDivision of Fisheries and Wildlife1 Rabbit Hill RoadWestborough, MA 01581b. Date of map:3/23/24If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18)....c. Submit Supplemental Information for Endangered Species Review * (Check boxes as they apply)1. Percentage/acreage of property to be altered:(a) within Wetland Resource Area percentage/acreage(b) outside Resource Area percentage/acreage2. Assessor's Map or right­of­way plan of site3. Project plans for entire project site, including wetland resource areas and areas outside of wetland jurisdiction, showingexisting and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work **a.Project description (including description of impacts outside of wetland resource area & buffer zone)b. Photographs representative of the sitec. MESA filing fee (fee information available at: http://www.mass.gov/eea/agencies/dfg/dfw/natural­heritage/regulatory­review/mass­endangered­species­act­mesa/mesa­fee­schedule.html )Make check payable to "Natural Heritage & Endangered Species Fund" and mail to NHESP at above addressProjects altering 10 or more acres of land, also submit:d.Vegetation cover type map of sitee.Project plans showing Priority & Estimated Habitat boundariesd. OR Check One of the following1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321CMR 10.14, http://www.mass.gov/eea/agencies/dfg/dfw/laws­regulations/cmr/321­cmr­1000­massachusetts­endangered­species­act.html#10.14; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR10.37 and 10.59.)2. Separate MESA review ongoing.a. NHESP Tracking Numberb. Date submitted to NHESP3.Separate MESA review completed.Include copy of NHESP "no Take" determination or valid Conservation & Management Permit with approved plan.*Some projects not  in Estimated Habitat may be located in Priority Habitat, and require NHESP review...2.For coastal projects only, is any portion of the proposed project located below the mean high waterline or in a fish run?a. Not applicable ­ project is in inland resource area onlyb.Yes NoIf yes, include proof of mailing or hand delivery of NOI to either:South Shore ­ Cohasset to Rhode Island, and the Cape & Islands:Division of Marine Fisheries ­ Southeast Marine Fisheries StationAttn: Environmental Reviewer836 S. Rodney French Blvd New Bedford, MA 02744 North Shore ­ Hull to New Hampshire:Division of Marine Fisheries ­ North Shore OfficeAttn: Environmental Reviewer30 Emerson AvenueGloucester, MA 01930If yes, it may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP's Boston Office.For coastal towns in the Southeast Region, please contact MassDEP's Southeast Regional office.3.Is any portion of the proposed project within an Area of Critical Environmental Concern (ACEC)?a.Yes No If yes, provide name of ACEC (see instructions to WPAForm 3 or DEP Website for ACEC locations). Note:electronic filers click on Website.b. ACEC Name4.Is any portion of the proposed project within an area designated as an Outstanding Resource Water (ORW) as designated in theMassachusetts Surface Water Quality Standards, 314 CMR 4.00?a.Yes No5.Is any portion of the site subject to a Wetlands Restriction Order under the Inland Wetlands Restriction Act (M.G.L.c. 131, §40A) or the Coastal Wetlands Restriction Act (M.G.L.c. 130, § 105)?a.Yes No6.Is this project subject to provisions of the MassDEP Stormwater Management Standards?1.Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management HandbookVol.2, Chapter 3)2.A portion of the site constitutes redevelopment3.Proprietary BMPs are included in the Stormwater Management Systemb.No, Explain why the project is exempt:1.Single Family Home2.Emergency Road Repair3.Small Residential Subdivision (less than or equal to 4 single­family houses or less than or equal to 4 units in multi­familyhousing project) with no discharge to Critical Areas.D. Additional InformationApplicants must include the following with this Notice of Intent (NOI). See instructions for details.Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information yousubmit to the Department by regular mail delivery.1.USGS or other map of the area (along with a narrative description, if necessary) containing sufficient information for theConservation Commission and the Department to locate the site. (Electronic filers may omit this item.)2.Plans identifying the location of proposed activities (including activities proposed to serve as a Bordering Vegetated Wetland[BVW] replication area or other mitigating measure) relative to the boundaries of each affected resource area.3.Identify the method for BVW and other resource area boundary delineations (MassDEP BVW Field Data Form(s).Determination of Applicability, Order of Resource Area Delineation, etc.), and attach documentation of the methodology.4.List the titles and dates for all plans and other materials submitted with this NOI.a. Plan Title:b. Plan Prepared By:c. Plan Signed/Stamped By:c. Revised Final Date:e. Scale:COVER CONTRACT 5AND SHEET C­5 J. HERMAN/M.GUIDICE July 2024SHEET EX­1:EXISTINGCONDITIONS PLAN,SHEET CD­1:PUMPING STATIONNO. 3 J. HEIL/Z. MILLER July 2024SHEET M­1, M­2, M­3,AND M­4 A. WELDON/W. HOTZJR.July 2024SHEET PS­A­1 ANDSHEET PS­A­2 C. CHAHANOVICH/B.GIORGI July 2024 COVER, SHEETS EX­1 AND EX­2, SHEETS CD­1 AND CD­2, AND CD­4 J. HEIL/Z. MILLER July 2024 SHEETS M­1 THRU M­6 A. WELDON/W. HOTZ JR.July 2024 SHEETS A­2 AND A­3 C. CHAHANOVICH/B. GIORGI July 2024 5.If there is more than one property owner, please attach a list of these property owners not listed on this form. 6.Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7.Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8.Attach NOI Wetland Fee Transmittal Form. 9.Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 2. Municipal Check Number 3. Check date 4. State Check Number 5. Check date 6. Payer name on check: First Name 7. Payer name on check: Last Name F. Signatures and Submittal Requirements I hereby certify under the penalties of perjury that the foregoing Notice of Intent and accompanying plans, documents, and supporting data are true and complete to the best of my knowledge. I understand that the Conservation Commission will place notification of this Notice in a local newspaper at the expense of the applicant in accordance with the wetlands regulations, 310 CMR 10.05(5)(a). I further certify under penalties of perjury that all abutters were notified of this application, pursuant to the requirements of M.G.L. c. 131, § 40. Notice must be made by Certificate of Mailing or in writing by hand delivery or certified mail (return receipt requested) to all abutters within 100 feet of the property line of the project location. 1. Signature of Applicant 2. Date 3. Signature of Property Owner(if different)4. Date 5. Signature of Representative (if any)6. Date For Conservation Commission: Two copies of the completed Notice of Intent (Form 3), including supporting plans and documents, two copies of the NOI Wetland Fee Transmittal Form, and the city/town fee payment, to the Conservation Commission by certified mail or hand delivery. For MassDEP: One copy of the completed Notice of Intent (Form 3), including supporting plans and documents, one copy of the NOI Wetland Fee Transmittal Form, and a copy of the state fee payment to the MassDEP Regional Office (see Instructions) by certified mail or hand delivery. Other: If the applicant has checked the "yes" box in Section C, Items 1­3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. Massachusetts Department of Environmental Protection Bureau of Resource Protection ­ Wetlands WPA Form 3 ­ Notice of Intent Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Provided by MassDEP: MassDEP File #: eDEP Transaction #:1697479 City/Town:YARMOUTH Page 7 of 8 * ELECTRONIC COPY Yarmouth Conservation Commission • 1146 Route 28 South Yarmouth, MA 02664-4492 Tel. (508)-398-2231 Ext. 1288 Rev 03/2024 Page 1 of 2 Administrative Checklist Notice of Intent General Information: All filings must be made on Town of Yarmouth forms. The filing deadline is two weeks prior to the next scheduled Conservation Commission meeting for new applications. Failure to follow this Checklist shall result in an Administratively Incomplete Application and will not be advertised for a Public Hearing. Refer to the meeting schedule. Contact the Conservation Office if you need assistance. Submitting an Application: Does the property have any outstanding/expired Orders of Conditions? If so, please file a Request for Certificate of Compliance for each outstanding/expired Order, as the Commission may not issue a new Order until any outstanding/expired Orders have been closed and recorded. (*see page 2) Hardcopy filing dropped off or mailed to the Conservation Office including: 1 Administrative Checklist 1 complete NOI application WPA form 3 with original signatures. Typed signatures will not be accepted. Detailed narrative of the project including existing & proposed conditions, construction sequence, type of equipment, staging locations, drainage and stormwater, erosion controls, invasive species management and alternative analysis. The narrative shall include how the project meets performance standards per 310 CMR 10.0 & TOY Wetland Regulations, delineation sheets (if BVW or vegetated wetlands are present) or other resource area calculations, and supporting information. 1 100’ radius map, current abutters list identifying the property owners who are to be notified per 310 CMR 10.00 and abutter notification form. Abutters list must be certified by the Town Assessor’s office. The Assessor’s office requires 7 days advance notice. All abutters must be notified via certified mail. Certified Mail Receipts (PS Form 3800) for all abutters. Green cards to be submitted at the hearing. 1 original and 6 copies of the plan, folded separately, right side out with title and project address visible. All plans shall reference NAVD1988 unless otherwise noted. See plan requirements Yarmouth’s share of State filing fee: Separate check made payable to “Town of Yarmouth” (refer to NOI Wetland Fee Transmittal Form) By-law filing fee: Separate check made payable to “Town of Yarmouth” Legal ad fee: Separate check made payable to “Town of Yarmouth” Please list project property’s street address on checks. Refer to Fee Schedule DEP share of the fee (refer to NOI form) shall be sent to: Dept. of Environmental Protection Box 4062 Boston, MA 02211 CONSERVATION OFFICE Yarmouth Conservation Commission • 1146 Route 28 South Yarmouth, MA 02664-4492 Tel. (508)-398-2231 Ext. 1288 Rev 03/2024 Page 2 of 2 DEP Submittal and Digital filing If you are filing with MassDEP using eDEP, please include a copy of the submittal confirmation with your application. If not filing via eDEP, a PDF of your application, plan, and all other supporting information must be sent VIA EMAIL the same day to DEP, Southeast Region at SERO_NOI@mass.gov with the subject line in the email per DEP’s request listed as “YARMOUTH - NOI - Street Address - Applicant Name” and copied to bdirienzo@yarmouth.ma.us and fkelley@yarmouth.ma.us. We must receive a copy of this email with the application as proof that it has been submitted to DEP. Initial below I CERTIFY that all on-site requirements will be completed by noon on the Friday prior to the hearing date. All proposed structures must be staked, and all relevant resource areas and buffer zones must be staked or flagged. Please consult the Yarmouth Wetland Regulations, page 17. Without proper staking your project may be deemed incomplete and be continued to the next hearing date. I understand that in person representation is required at the scheduled hearing to present to the conservation commission If Applicable Certified Mail Receipt for Massachusetts Natural Heritage and Endangered Species Program Certified Mail Receipt for Massachusetts Division of Marine Fisheries. If filing via email, CC bdirienzo@yarmouth.ma.us and fkelley@yarmouth.ma.us Waterway’s jurisdiction – Any coastal projects such as, but not limited to, docks, piers, bulkheads, revetments, dredging and boardwalks shall require submittal of all Notice of Intent, plans and supplemental information to the Town of Yarmouth Waterways/Shellfish Committee via the Natural Resources office by certified mail or hand delivery. The applicant or his/her representative must provide the Conservation office with proof that this has been done or the filing will not be accepted. Other Requirements o Does the proposed project meet the applicable regulations of the Town of Yarmouth Zoning bylaws? Do you need to file with the Yarmouth Board of Appeals? If so, you must file with ZBA after conservation permitting is completed. o If a vacant lot, have you completed and received a determination for the Building Department for a lot inquiry form? *To view all Conservation files/permits for the property address online, go to www.yarmouth.ma.us/LF Copyright:© 2013 National Geographic Society, i-cubed ± 0 0.6 1.20.3 Miles Le gend NHESP_Natural_Communities_210817 NHESP_Estimated_Habitats_of_Rare_Wildlife_210817 NHESP_Priority_Habitats_Rare_Species_210817 USA Topo Maps National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOOD HAZARD AREAS Without Base Flood Elevation (BFE) Zone A, V, A99 With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREEN Area of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 3/11/2024 at 4:50 PM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. 1:6,000 70°13'43"W 41°39'12"N 70°13'5"W 41°38'45"N Basemap Imagery Source: USGS National Map 2023 National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOOD HAZARD AREAS Without Base Flood Elevation (BFE) Zone A, V, A99 With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREEN Area of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 3/11/2024 at 4:59 PM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. 1:6,000 70°15'22"W 41°39'24"N 70°14'45"W 41°38'57"N Basemap Imagery Source: USGS National Map 2023 National Flood Hazard Layer FIRMette 0 500 1,000 1,500 2,000250 Feet Ü SEE FIS REPORT FOR DETAILED LEGEND AND INDEX MAP FOR FIRM PANEL LAYOUT SPECIAL FLOOD HAZARD AREAS Without Base Flood Elevation (BFE) Zone A, V, A99 With BFE or DepthZone AE, AO, AH, VE, AR Regulatory Floodway 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average depth less than one foot or with drainage areas of less than one square mileZone X Future Conditions 1% Annual Chance Flood HazardZone X Area with Reduced Flood Risk due to Levee. See Notes.Zone X Area with Flood Risk due to LeveeZone D NO SCREEN Area of Minimal Flood Hazard Zone X Area of Undetermined Flood HazardZone D Channel, Culvert, or Storm Sewer Levee, Dike, or Floodwall Cross Sections with 1% Annual Chance 17.5 Water Surface Elevation Coastal Transect Coastal Transect Baseline Profile Baseline Hydrographic Feature Base Flood Elevation Line (BFE) Effective LOMRs Limit of Study Jurisdiction Boundary Digital Data Available No Digital Data Available Unmapped This map complies with FEMA's standards for the use of digital flood maps if it is not void as described below. The basemap shown complies with FEMA's basemap accuracy standards The flood hazard information is derived directly from the authoritative NFHL web services provided by FEMA. This map was exported on 3/11/2024 at 5:08 PM and does not reflect changes or amendments subsequent to this date and time. The NFHL and effective information may change or become superseded by new data over time. This map image is void if the one or more of the following map elements do not appear: basemap imagery, flood zone labels, legend, scale bar, map creation date, community identifiers, FIRM panel number, and FIRM effective date. Map images for unmapped and unmodernized areas cannot be used for regulatory purposes. Legend OTHER AREAS OF FLOOD HAZARD OTHER AREAS GENERAL STRUCTURES OTHER FEATURES MAP PANELS 8 B 20.2 The pin displayed on the map is an approximate point selected by the user and does not represent an authoritative property location. 1:6,000 70°15'59"W 41°39'41"N 70°15'22"W 41°39'14"N Basemap Imagery Source: USGS National Map 2023 ATTACHMENT A PROJECT NARRATIVE Page 1 Attachment A Project Narrative 1.0 Project Description The Town of Yarmouth (the Town) is in the process of implementing its MassDEP- approved Comprehensive Wastewater Management Plan (CWMP) to address nitrogen contamination in the Town’s estuaries. Phase 1 of the CWMP includes construction of a Water Resource Recovery Facility (WRRF) and a collection system running along Route 28 and adjacent streets. The collection system will be installed under five construction contracts. Contracts 2 and 3 are currently under construction, Contract 4 will be commencing in the fall and Contracts 5 and 6 are in final design. As part of Contracts 5 and 6 the Town is proposing to construct three new wastewater pumping stations (PS1, PS2, and PS3) and install a new 345-foot long double barrel sewer siphon beneath the Parker River using horizontal directional drilling (HDD). One siphon barrel will be 6-inch diameter for low sewer flow conditions and the second barrel will be 10-inch in diameter for higher sewer flow conditions. The HDD method of construction is a trenchless method of installing the new pipeline which avoids disturbance to the riverbed, surface water, and wetland resource areas. The HDD method uses a remotely operated drilling head to create a pilot hole which is then used to pull through solvent welded sections of high-density polyethylene (HDPE) pipe. Note that the collection system piping portion of Contracts 5 and 6 will be filed with the Yarmouth Conservation Commission as a separate Request for Determination of Applicability since work is limited to within existing streets. PS1, located on Town owned land and PS2, located on private property (Town is in process of securing easement) are part of Contract 6. Sewerage flow from the proposed PS1 will be pumped via a force main to a proposed gravity sewer in Route 28 . Sewerage flow from proposed PS2 will be pumped via a force main to a gravity sewer installed in Route 28 as part of Contract 5, which flows to PS3. Pumping station PS3 will pump wastewater to the proposed Water Resource Recovery Facility (WRRF) at 99 Buck Island Road. PS1 is located outside of the Yarmouth’s Conservation Commission jurisdiction, therefore no further discussion is provided for PS1. Pumping Station PS3 is part of Contract 5 and is located on Town owned land at the site of the Riverwalk Park project. Sewerage flow from the proposed PS3 will be pumped via a force main in Route 28 , Winslow Grey Road, Joshua Baker Road, Arbutus Path, and within an existing gravel road through the cranberry bogs to the proposed Water Resource Recovery Facility (WRRF) at 99 Buck Island Road. The proposed activities qualify as a Limited Project in accordance with Sections 10.53(3) (d) of the Wetlands Protection Regulations, which includes “The construction, reconstruction, operation and maintenance of underground and overhead public utilities, such as electrical distribution or Attachment A • Project Narrative Page 2 transmission lines, or communication, sewer, water and natural gas lines”. Limited projects may be issued an Order of Conditions notwithstanding the provisions of 310 CMR 10.54 through 10.58 and 10.60. The following sections address the existing on-site wetland conditions, work proposed adjacent to wetland resource areas, proposed measures to mitigate any wetland resource area impacts, and compliance with the performance standards. 2.0 Existing Conditions 2.1 Parker River Crossing The proposed work areas for the HDD of Parkers River are located on parcels listed as Map 32, Lot 93 (Town owned) and Map 32, Lot 92 (owned by Maritime Heritage Research Labs LLC). The following wetland resource areas are present within and adjacent to the HDD work areas. There is no salt marsh within the project area. 2.1.1 Coastal Bank 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” [310 CMR 10.30(2) ]. The Coastal Bank consists of armored channel bank. The top of the slope (riprap) was delineated based on slope characteristics pursuant to DEP Wetland Policy 92-2 and is marked on Sheet C-5. In this location, the “top of coastal bank” is location below the 100-yr flood elevation (11 ft) at which point the slope ceases to be greater than or equal to 10:1. The Coastal Bank is significant to storm damage prevention and flood control. 2.1.2 Land Under Ocean (LUO) LUO means land extending from the mean low water line seaward to the boundary of the municipality's jurisdiction and includes land under r estuaries [310 CMR 10.25 (2)]. The mean low water line within Parker River extends up to el. -2.18 feet (NAVD 88). 2.1.3 Land Subject to Coastal Storm Flowage (LSCSF) LSCSF is defined as “areas that extend up-gradient or landward from the ocean and the ocean’s estuaries that are subject to any inundation caused by coastal storms up to and including that caused by the 100-year storm, surge of record or storm of record, whichever is greater.” The FEMA Flood Insurance Rate Map identify the 100-year floodplain at elevation 11 feet NAVD 88 for this project location, see Figure 2A. PS2 is located on land owned by Cranberry View LLC and located at 316 Route 28 (Map 30, Lot 153). The FEMA Flood Insurance Rate Map identifies the 100-year floodplain (i.e., LSCSF) at elevation 11 feet NAVD 88 for this site location, see Figure 2B. PS3 is located on a town-owned parcel of land located at 669 Route 28 (Map 32, Lot 122). The FEMA Flood Insurance Rate Map identifies the 100-year floodplain (i.e., LSCSF) at elevation 11 feet NAVD 88 for this site location, see Figure 2A. Attachment A • Project Narrative Page 3 2.1.4 Riverfront Area Riverfront Area is defined as: “the area of land between a river’s mean annual high-water line and a parallel line measured horizontally outward from the river and a parallel line located 200 feet away, … In tidal rivers, the mean annual high-water line is coincident with the mean high-water line determined under 310 CMR 10.23.” [310 CMR 10.58 (2)] There is a 200-ft Riverfront Area associated with Parkers River which extends 200 feet from the mean high-water line of 1.44 ft. Public wastewater projects are exempt from the performance standards of the RFA according to 310 CMR 10.58 (6)(h) which reads: “Notwithstanding the Provisions of 310 CMR 10.58(1) through (5), Certain Activities or Areas are Grandfathered or Exempted from Requirements for the Riverfront Area: Construction, expansion, repair, restoration, alteration, replacement, operation and maintenance of public or private local or regional wastewater treatment plants and their related structures, conveyance systems, and facilities, including utility lines.” 2.1.5 Bordering Vegetated Wetlands An Order of Resource Delineation was issued on September 23, 2009, for the 99 Buck Island Site in support of the proposed Phase 1 Sewer Service Area. This resource area delineation has since expired but provides information on wetland conditions. The infrastructure proposed in 2009 was not built. The wetland flags are shown on the Project Plans in Attachment F. In November and December 2008, Magdalena Lofstedt, PWS, and Andrew Poyant, Environmental Scientist delineated wetland resource areas for the Phase 1 sewer area. The existing wetland resource boundaries were evaluated for conformance with the Massachusetts Wetland Protection Act (MGL c. 131 s. 40)(MWPA) and Regulations (310 CMR 10.00) and the boundary was delineated in accordance U.S. Army Corps of Engineers 1987 Wetlands Delineation Manual (Environmental Laboratory, 1987, "Corps of Engineers Wetlands Delineation Manual" Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Mississippi), using vegetation, soils and indicators of wetland hydrology. The wetland boundary was demarcated at the limit of wetland vegetation (limit of plant community dominated [50% or more cover] by species adapted to living in wetland conditions), visual inspections, as well as indicators of hydric soils and wetland hydrology. Wetland Boundaries were surveyed by Surveying and Mapping Consultants Inc. (SMC). Bordering Vegetated Wetlands are defined as: "freshwater wetlands which border on creeks, rivers, streams, ponds and lakes. The types of freshwater wetlands are wet meadows, marshes, swamps and bogs. Bordering Vegetated Wetlands are areas where the soils are saturated and/or inundated such that they support a predominance of wetland indicator plants. The ground and surface water regime and the vegetational community which occur in each type of freshwater wetland are specified in M.G.L.C. 131, § 40" [310 CMR 10.55 (2)(a)] Wetland 5 (across from Mill Pond) Attachment A • Project Narrative Page 4 Wetland flags 5-1 through 5-7End demarcate a common reed (Phragmites australis) dominated emergent marsh across from Mill Pond. Additional species observed included willows (Salix sp.), alder (Alnus sp.), honeysuckle (Lonicera sp.), purple loosestrife (Lythrum salicaria), soft rush (Juncus effuses), northern arrowwood (Viburnum recognitum), and multiflora rose (Rosa multiflora). Wetland 13 (Parkers River) At the upstream side of the Route 28 Parkers River Bridge, wetland flags 13-1 through 13-3 demarcate a shelf of brackish wetland above the bank. The riverbank along the road consists of riprap embedded in concrete. Vegetated within the brackish wetland consisted of beach grass (Ammophila breviligulata) and multiflora rose. Soils showed hydric characteristics. Wetland flags were not place along the riprap bank. Approximately 30 feet beyond the scenic outlook area, the riprap ends, and the bank consists of natural substrate. 2.1.6 Vegetated Wetlands (regulated under Town Bylaw) The boundary of Vegetated Wetlands is defined as: “The boundary of a vegetated wetland is the line within which 50% or more of the vegetation community consists of wetland indicator plants and saturated or inundated conditions exist. A minimum size of 500 square feet is required for jurisdiction of a vegetated wetland not bordering a water body under these regulations”. Wetland flags 12-1 through 12-11End demarcate a local vegetated wetland with an area of approximately 4,200 square feet. Wetland 12 is located adjacent to Parkers River on the west side of the Route 28 bridge and south side of Route 28. The soils show evidence of hydric characteristics and there is standing water throughout the vegetated wetland. At the time of the site visit, the vegetation was dominated by poison ivy (Toxicodendron radicans), asters, swamp rose (Rosa palustris), common reed, willows (Salix sp.), wool grass, beach grass (Ammophila breviligulata) and rushes (Juncus sp.). 2.1.7 Estimated Habitat There is no state listed rare or endangered species within or adjacent to the project area according to MassGIS Online Viewer. 3.0 Proposed Work within Wetland Resource Areas and Buffer Zones 3.1 Parkers River Crossing Activities which are the subject of this NOI include the installation of approximately 340-feet of new 6-inch and 10-inch diameter sewer mains underneath Land Under Ocean (LUO) associated with Parkers River using HDD. The other wetland resource areas overlapping this work area include the 200-ft Riverfront Area (RFA), Land Subject to Coastal Storm Flowage (LSCSF), and Coastal Bank. The Entry and Exit HDD work areas will temporarily alter approximately 23,965 square feet of LSCSF and RFA, and approximately 21,726 sf of the 100-ft Buffer Zone. In addition, the proposed work will temporarily alter approximately 6,438 square feet of the locally regulated 35-ft Setback and an additional 2,010 square feet within the 35-50-ft Buffer Zone. No permanent Attachment A • Project Narrative Page 5 alterations or impacts to the functions of these resource areas and buffer zones are anticipated since all disturbed areas will be restored to preconstruction conditions and grades. Please refer to Project Plans in Attachment F and Site Photographs in Attachment C. HDD involves a specialized drill rig that creates a borehole along a pre-determined path under waterways or other impediments. This specialized rig then “pulls” the new pipeline through the drilled borehole. During construction, HDD equipment will be staged on both sides of the Parkers River above the coastal bank. Crews will primarily operate equipment from the work areas on the west side of Parkers River and each new 400-ft sewer main will be welded together and pulled through the bore from the exit pit and stringing area on the east side of the river. General guidance for “Inadvertent Return” (IR) Contingency Plans is provided in Attachment E, however, the contractor will be responsible for providing a site specific “Inadvertent Return” (IR) Contingency Plan prior to construction. All equipment will be located above the coastal bank, Best Management Practices (BMPs) will be in place prior to and during the ground-disturbing work, and disturbed surfaces will be restored to preexisting conditions to the extent practicable. For the HDD, the bore hole will be drilled in a predetermined path using a surface-launched drilling rig staged on west side of the Parkers River. Two HDD staging areas at the exit and entry locations will be established as shown on the Project Plans in Attachment F. Prior to commencement of construction, staked compost logs will be installed around staging areas and the pits. Excavated material from the pits will either be removed from the site or stored in an upland area for use as backfill upon completion of the pipe installation. Once the sewer has been installed and connections made, the work areas will be restored to their pre-existing grade. No changes in fill/grade are proposed. To complete the HDD bore, a pilot hole is drilled using a small-diameter (3 to 5-inch) drill string and a drill bit entering the ground through the “entry pit.” Bentonite drilling fluid, primarily composed of bentonite clay and water, is delivered to the cutting head through the drill string to cool the drill bit, provide hydraulic cutting action, and remove cutting spoils as the drilling fluid returns to the entry point of the pilot hole. A completed pilot hole and subsequent drilling will end with the drill head resurfacing at the “exit pit.” The pilot hole is then enlarged with one or more reaming passes, until the desired hole diameter is obtained based on the proposed pipeline diameter. Once the bore hole is appropriately sized, machinery will pull the replacement pipeline through the bore hole, test the pipe for integrity (to ensure there was no damage to the pipe during the pull), and tie the replacement pipeline into the existing lines. HDD is done with the help of a viscous fluid known as drilling fluid, comprised of a non-toxic colloidal clay called bentonite. Bentonite absorbs water which causes it to swell, creating a viscous fluid. This fluid is used to remove cut borings, stabilize the bore hole, and cool the drill head. Fresh drilling fluid is expelled through a nozzle at the tip of the drill head. Throughout the process, the fluid is cycled through a reclaimer, a machine which removes the drill cuttings, and allows the fluid to be recycled for continuous use within the project. The entry and exit pits will also ensure that the drilling fluid is collected and contained. At the end of the installation, any the drilling fluid remaining in the drill pits or on-site will be collected and transported to an appropriate location for disposal or reuse offsite. Attachment A • Project Narrative Page 6 HDD Contingency Plan Since the HDD installation method involves the use of drilling fluid that is slightly pressurized during the drilling process in order to function properly, there is potential with any HDD that some drilling fluid may migrate out of the drill hole through existing cracks or fissures in the ground and escape to the surface. However, the design of the HDD, including length and depth of the drill path, takes into consideration the nature of the underlying soil geology to be drilled through, as well as the presence of sensitive resources, in order to minimize the potential for an inadvertent return. Standard BMPs utilized for IR Contingency Plan are included as Attachment E. The HDD drilling contractor will be required to prepare a site-specific IR Contingency Plan prior to the commencement of construction. This plan will set forth the methodologies, monitoring activities, and procedures to be followed to prevent an inadvertent release of drilling fluid and will establish the process and procedures to be followed if an inadvertent release of drilling fluid occurs. Response and restoration actions will include: • Continuous resource area monitoring during installation and stop work procedures if an IR is observed • Detailed descriptions and locations of containment devices such as booms, curtains, or sediment and erosion controls • Materials removal and disposal procedures both in resource areas and in uplands • Reporting procedures and timelines 3.2 Pumping Stations PS2 and PS3 3.2.1 Pumping Station PS2 Proposed work associated with Pumping Station PS2 consists of constructing new facilities within the existing paved and packed gravel parking lot to 316 Route 28. A utility easement will be secured by the Town on privately land owned land. Note that a concrete retaining wall is present along the edge of the parking lot and all work is upslope of the retaining wall (see Photos in Attachment D). The new pumping station will be submersible below ground with a wet well (i.e., deep below ground structure) that will house submersible pumps. Valving and a meter will be housed in separate below grade structures adjacent to the wet well. Each area will be accessed by individual H-20 rated hatches or traditional manhole covers. An 11.5’ by 17’ precast building (control room) with concrete pad at the doorway will house all of the electrical and control equipment. There will also be a small meter vault to house the flow meter accessible via standard 30-inch diameter manhole cover. A standby natural gas generator will be placed on a 5’ by 12’ concrete pad. Odor control is not included in this design but there is space allocated on site for a future odor control system, if needed. Fill material will be brought in to build up the land to elevation land 13 feet in order to allow the first-floor elevation (FFE) of the control building and critical infrastructure to be 3 feet above the Attachment A • Project Narrative Page 7 100-year flood elevation (see Sheet CD-2). Engineering design standards require that critical infrastructure (i.e., electrical and control equipment, including natural gas standby generator) be elevated 3 feet above the effective 100-year floodplain which at this location is 11 feet. Four- inch-deep gravel stone surfacing will be placed around the pumping station, wet well, valve vault, and generator at elevation 13.0 ft. The gravel surfacing will provide water quality treatment for the impervious area associated with the wet well, generator, the northern half of the pumping station and a section of the driveway. A bioretention area is proposed along Route 28 to provide water quality treatment, recharge to groundwater and peak attenuation for most of the access drive, the flow meter vault and the southern half of the control building (see Attachment C: Stormwater Report for further discussion). Overflows from the bioretention area will be directed to the west towards the cranberry bog. The embankment area for the elevated pumping station will be vegetated with loam and seed, ornamental trees, evergreen shrubs and groundcover. Raising the existing grade and construction of PS2 will permanently alter approximately 3,490 square feet (sf) of LSCSF, and temporarily alter approximately 565 sf of 35-ft Setback Zone, 1,320 sf of 50-ft Setback Zone, and 4,885 sf of 100-ft Buffer Zone to BVW (i.e., cranberry bogs). Refer to Table 1 for a summary of wetland resource area and buffer zones impacts for the project components (i.e., PS2, PS3, and Parker River HDD crossing). Table 1: Summary of Wetland Resource Areas and Buffer Zone Impact Site LSCSF (sf) 100-ft Buffer Zone (temp) 0-35 ft Setback (temp.) 35-50 ft Setback (temp.) PS2 3,490 (permanent) 4,885 656 sf 755 sf PS3 11,780 (permanent) 6,580 0 330 sf Parkers River HDD 23,965 (temporary) 21,726 6,438 sf 2,010 sf 3.2.2 Pumping Station PS3 Proposed work associated with Pumping Station PS3 consists of constructing new sewerage facilities and an access drive from the Riverwalk Park access drive on a town-owned parcel of land located at 669 Route 28. The new pumping station will be submersible below ground with a wet well (i.e., deep below ground structure) that will house submersible pumps. Valving will be housed in separate below grade structure adjacent to the wet well. Each area will be accessed by individual H-20 rated hatches. A 40’ by 24’ one story control building with concrete pads and stairs at the front doorway and concrete walkway, with stair access connecting two doorways on the south (back) side of the building. This building will house all of the electrical and control equipment, including a natural gas standby generator. Fill material will be brought in to build up the land to elevation land 11 feet with the first-floor elevation (FFE) of the control station building set at elevation 14 to allow critical infrastructure to be 3 feet above the 100-year flood elevation (see Sheet CD-2). Odor control is not included in this design but there is space allocated on site for a future odor Attachment A • Project Narrative Page 8 control system if needed. There will also be a meter vault to house the flow meter accessible via standard 30-inch diameter manhole cover. PS3 will be accessed from a proposed driveway off the driveway for the Town’s Riverwalk Park, which is currently under construction. Stormwater management and treatment from PS3 was included in the design for the Yarmouth Town’s Riverwalk Project and approved under Order of Conditions DEP File No. 83-2372. Roof runoff from the new building will be captured in gutters and discharged into park development’s Infiltration System No. 1. Runoff from the new paved driveway will also be discharged into Infiltration System No. 1. Please refer to the Notice of Intent DEP File No. 83-2372 for Stormwater Checklist and Drainage Analysis. CDM Smith during final design of PS3 was able to reduce the amount of impervious area, see Table 2 below. Table 2: Reduction in Impervious Area at PS3 from previously reviewed and presented in NOI (DEP File No. 83-2372 Land Use Impervious Area (sf) Impervious Area (sf) September 2022 (previously reviewed by the Commission Aug-24 Paved 2,622 2,580 Roof Area 2,250 1,543 Sidewalk 1,460 357 Total 6,332 4,480 Raising the existing grade and construction of PS3 will permanently alter approximately 11,780 sf of LSCSF, and temporarily alter approximately 330 sf of 50-ft Setback Zone, and 6,580 sf of 100-ft Buffer Zone to Vegetated Wetland. Refer to Table 1 above for a summary of wetland resource area and buffer zones impacts for the project components (i.e., PS2, PS3, and Parker River HDD crossing). Before work starts, compost logs will be installed at the limit of work to prevent the transport of sediment to downgradient wetlands and waterways during construction. The compost log barrier will be inspected weekly and after all storm events of 0.5 inch or greater and repaired as needed. The barrier will be left in place until the area is permanently stabilized. A stockpile of compost logs will be maintained on site for routine maintenance and emergency repairs. Upon completion of construction, disturbed soils outside of the pumping station facility structures will be final graded with material to match existing conditions and seeded with a native erosion control and/or lawn seed mixture. Native tree and shrub plantings will be installed to screen the new facilities from Route 28. Attachment A • Project Narrative Page 9 4.0 Stormwater Management Compliance with the Massachusetts Stormwater Standards (the Standards) is required per the MWPA [310 CMR 10.05(6) (k) through (q)] since work is subject to review under MWPA. The Standards consist of ten stormwater management standards (coastal projects exempt from the peak attenuation) to be addressed for new or redevelopment projects. Since the proposed project results in an increase of impervious area for the construction of Pumping Stations 2 and 3 it is considered a new development. Please refer to Attachment C for discussion of proposed stormwater management design, drainage analysis, stormwater checklist, and stormwater operation and maintenance plan for PS3. As noted, is Section 3.2.2. the drainage design and management for the Riverwalk Project accounted for the new stormwater runoff from PS3. 5.0 Mitigation Measures The following precautions will be taken to prevent impacts to nearby coastal wetland resource areas. Construction Period Controlling erosion and transport of sediment to the downstream wetland resource areas requires development of site-specific best management practices (BMPs), both structural controls as well as proper management of construction activities. Please refer to Sheets CD-3 and CD-4 for details on the erosion and sedimentation and control measures. ▪ Staked compost logs will be installed at the limit of work prior to commencement of construction to prevent the transport of sediment and debris to downgradient drainage ditch and to demarcate the limit of work. A stockpile of compost logs will be stored in an easily accessible location for routine maintenance and emergency repairs. The compost log barrier will be inspected weekly and after all storm events and repaired as needed. The barrier will be left in place until the area is permanently stabilized. At the Parkers River crossing staked silt fence and compost logs will be used. ▪ Construction access will be from Route 28. The last crew to leave the site each day would be responsible for regularly sweeping the roadways, if and when sediment and/or rock have been tracked onto the street. ▪ Dewatering will be necessary during construction of the entry/exit pits and sewer trench. If there is adequate vegetation in upland areas to function as a filter medium, the water generally will be discharged to the vegetated land surface. Where vegetation is absent or where slope prohibits, water will be pumped into a filter bag, or a dewatering basin consisting of a filter bag with straw bale or silt fence perimeter controls which will be located in approved areas outside wetland resource areas. The pump intake hose will not be allowed to set on the bottom of the excavation throughout dewatering. The basin and all accumulated sediment will be removed following dewatering operations, and the area will be seeded and mulched with straw. The bag will be surrounded with additional sediment filtration such as fiber rolls, straw bales, or other appropriate containment. ▪ Work will proceed as rapidly as possible. Limiting the exposure time of disturbed soils to wind and precipitation will minimize the soil erosion and subsequent sedimentation. Attachment A • Project Narrative Page 10 Spill Control Measures ▪ An equipment storage and refueling area will be established in the project vicinity. All overnight storage of construction equipment and vehicles, refueling and light maintenance activities will occur in this area. A construction fence will be installed around the limit of this area to identify its limit. ▪ Spill containment equipment (e.g., oil absorbent pads, oil absorbent materials, containment booms, shovels, etc.) will be stored in the equipment storage and refueling area in an easily accessible manner for use in the clean-up of accidental releases of fuel, hydraulic fluid, or other hazardous materials. Should there be an accidental release the proper authorities will be notified in accordance with all applicable federal, state, and local laws. ▪ To minimize the possibility of hydraulic fluid leaks, all hydraulic lines on all construction equipment and vehicles will be inspected at the end of each workday. If any excessive wear or leakage is observed, the line will be repaired prior to further use. In addition, a supply of oil absorbent materials (i.e., pads, "speedy dry," and/or booms) will be maintained with the equipment at the work area for immediate deployment in the event of an accidental release of fuel, hydraulic fluid, oil, etc. ▪ Any oil, hydraulic fluid, or other hazardous materials will be stored in original containers; fuels will be stored in tightly sealed containers which are clearly marked; and all such materials will be stored under a roof or in a covered enclosure. Post Construction Measures ▪ If seeding occurs outside of the growing season, temporary stabilization measures (i.e., mulching or erosion control blankets) will be used to prevent erosion until the area can be seeded during the following growing season. ▪ All disturbed soils will be restored by installing native plantings and seeding with native seed mixture; and ▪ The compost log barrier will not be removed until a vegetative cover dense enough to prevent erosion is established. 6.0 Compliance with Performance Standards 6.1 Massachusetts Wetlands Protection Act 6.1.1 Limited Projects This proposed project meets the criteria for limited projects as stated in 310 CMR 10.53 (3)(d). The following presents how this project complies with performance standards for these limited projects. (d) The construction, reconstruction, operation and maintenance of underground and overhead public utilities, such as electrical distribution or transmission lines, or communication, sewer, water and natural gas lines, may be permitted, in accordance with the following general conditions and any additional conditions deemed necessary by the issuing authority: Attachment A • Project Narrative Page 11 1. The issuing authority may require a reasonable alternative route with fewer adverse effects for a local distribution or connecting line not reviewed by the Energy Facilities Siting Council. 2. Best available measures shall be used to minimize adverse effects during construction. 3. The surface vegetation and contours of the area shall be substantially restored; and 4. All sewer lines shall be constructed to minimize inflow and leakage. 1. The only alternatives to the Parker River crossing and sewerage pumping stations would be: (1) No action (i.e., continue to rely on on-site septic system) which does meet the objective of the CWMP. 2. Best Management Practices (BMP’s) will be used to minimize wetland impacts during construction and for the long term. 3. Surface contours and vegetation will be restored to pre-construction conditions. 4. The proposed location of the new sewer lines has been carefully selected to minimize wetlands and land under control of the Conservation Commission. Water-tight sewer pipe will be used to minimize inflow and leakage. 6.1.2 Land Under Ocean (LUO) 310 CMR (5) through (7) may apply to the proposed activities, the following presents how this project complies with these performance standards. (5) Projects not included in 310 CMR 10.25(3) or (4) which affect nearshore areas of land under the ocean shall not cause adverse effects by altering the bottom topography so as to increase storm damage or erosion of coastal beaches, coastal banks, coastal dunes, or salt marshes. No impacts to the nearshore areas of land under the ocean is anticipated as part of the proposed Project – all activities within LUO will be located below the riverbed. (6) Projects not included in 310 CMR 10.25(3) which affect land under the ocean shall if water- dependent be designed and constructed, using best available measures, so as to minimize adverse effects, and if non-water-dependent, have no adverse effects, on marine fisheries habitat or wildlife habitat caused by: (a) alterations in water circulation; (b) destruction of eelgrass (Zostera marina) or widgeon grass (Rupia maritina) beds; (c) alterations in the distribution of sediment grain size; (d) changes in water quality, including, but not limited to, other than natural fluctuations in the level of dissolved oxygen, temperature or turbidity, or the addition of pollutants; or (e) alterations of shallow submerged lands with high densities of polychaetes, mollusks or macrophytic algae. HDD is the selected construction method for installation of the sewer as it will not result in adverse effects on marine fisheries habitat or wildlife habitat as all activities within LUO will be located below the riverbed. Attachment A • Project Narrative Page 12 (7) Notwithstanding the provisions of 310 CMR 10.25(3) through (6), no project may be permitted which will have any adverse effect on specified habitat sites of rare vertebrate or invertebrate species, as identified by procedures established under 310 CMR 10.37. No impacts to wildlife habitat functions are anticipated as part of the proposed Project – all activities within LUO will be located below the riverbed. 6.1.3 Riverfront Area Wastewater projects are exempt from the Riverfront Protection Act per 310 CMR 10.58(6)h therefore no discussion is provided how the proposed design complies with the performance standards for work in Riverfront Area. 6.1.4 Land Subject to Coastal Storm Flowage 310 CMR 10.00 has no performance standards for work within the LSCSF. 6.2 Town of Yarmouth Wetland Protection Regulations 6.2.1 The proposed project meets the criteria for LSCSF as stated in Section 4.10. The following presents how this project complies with performance standards for LSCSF. Any activity within land subject to coastal storm flowage which will result in the building upon, removing, filling or altering of land shall not have an adverse effect on the interests protected by the bylaw by: i. reducing the ability of the land to absorb and contain flood waters; The proposed work would reduce the ability of the land to absorb and contain flood waters as fill will be placed in LSCSF for both PS2 and PS3 in order to elevate critical infrastructure (electrical and control equipment, including natural gas standby generator) 3 feet above the effective BFE as required by engineering standards. Flood proofing the above grade control buildings was would not be practical given that this critical infrastructure may need to be accessed by maintenance personnel during a flood event and would not meet current design standards. Other below grade structures such as the valve and meter vaults will have watertight hatches or manhole covers where finished grade is below the 100-yr flood elevation plus 3-feet. i. reducing the ability of the land to buffer more inland areas from flooding and wave damage; See above. ii. increasing the elevation or velocity of flood waters, or by redirecting or increasing flows or causing channelization, in each case at the project site, adjacent or nearby properties, or any public or private way. See above. iii. displacing or diverting flood waters to other properties or resource areas. Fences and privacy walls, including walls separating one property from another, may obstruct or divert flood flow and waves toward buildings and protected areas. Solid fences (stockade and similar) must be constructed with 6 inches of clearance below to allow the passage of floodwaters and wildlife; Attachment A • Project Narrative Page 13 A small, fenced area around the proposed generator and future odor control equipment is proposed at PS2. iv. causing, or creating the likelihood of, damage to other structures on land within the flood plain as debris (collateral damage); Not anticipated. v. causing ground, surface or saltate pollution triggered by coastal storm flowage; Not anticipated. vi. reducing the ability of the resource to serve as a wildlife habitat and migration corridor through activities such as, but not limited to the removal of substantial vegetative cover and/or installation of fencing and other structures which prevent wildlife migration across property. Native plantings have been incorporated into the design for PS2 and PS3 to provide wildlife habitat. vii. prevention of the migration of resource areas such as salt marshes due to sea level rise. Not anticipated. viii. If flood control and storm damage protection functions have already been impaired, redevelopment must improve existing conditions by reducing impervious surfaces, restoring flood control and storm damage protection functions, installing native plantings, or by restoring or creating other wetland resource areas. The design minimized new impervious area to the maximum extent practicable by using crushed stone around pumping station components. Native plantings per Barnstable County native plant list will be installed at both pump stations, refer to Project Plans in Attachment F. And shall meet the following requirements; ix. Existing septic system and cesspool repairs will be allowed provided they meet all Title 5 and local Board of Health thresholds. Not Applicable x. All groundwater elevations shall incorporate seasonable adjustments if test holes and or leaching components are 100 feet or closer from major estuaries. Not Applicable xi. Any proposed deck, shed, or other similar structure must be securely anchored to a footing or foundation. Not Applicable xii. Any activity shall preserve existing soils, vegetation, and other natural conditions that serve as buffers to coastal flooding and storm surges. Attachment A • Project Narrative Page 14 Native tree, shrub, and groundcover plantings has been incorporated into the design for PS2, PS3, and the Parkers River crossing to restore and provide additional buffers to coastal flooding and storm surges. 7.0 Variance Request The Entry and Exit HDD areas will be located within the 35-ft Setback and therefore a Variance is required from the Regulations. Per Section 7.1 of the Regulations, “the Conservation Commission may at its discretion, waive one or more of these regulations when the proposed work potentially represents a significant ecological improvement when compared to existing conditions, or will not adversely affect any areas subject to the protection of these regulations. In addition, the Conservation Commission may, at its discretion, waive one or more of these regulations when there is an overriding public benefit or safety issue at hand and there is no feasible alternative to the proposed work.” The Town is requesting a Variance from the requirement to have a 35-foot undisturbed buffer zone between the Coastal Bank and the limit of proposed Entry and Exit HDD areas. Both of these areas will be restored to preconstruction grades and/or planted with native species in accordance with the requirements listed in the Regulations. A portion of the Entry area and proposed siphon outlet structure are located in an existing gravel area that is used for parking and an access driveway to the Whydah Pirate Museum. The Exit area and proposed siphon inlet structure are located in an existing Town owned parcel that includes a walking path and benches that will be restored after construction. Work is also proposed within the 35-ft Setback at PS2 however this area consists of paved and packed gravel parking lot. The area is currently being used for staging of equipment for cranberry bog operation. Native plantings will be installed at PS2 as shown on the Project Plans in Attachment F. Overall, the project will result in a significant ecological improvement by helping to address the nitrogen contamination in the Town’s estuaries. 8.0 Summary The interests of the MWPA and 310 CMR 10.00 and the Yarmouth Wetlands Protection Bylaw and Wetlands Regulations will not be impaired as a result of this project. Appropriate erosion and sedimentation control measures will be implemented throughout the course of construction to prevent the transport of sediment to nearby coastal resources. Disturbed soils will be stabilized upon completion of construction to prevent erosion and sedimentation in the long-term. Although portions of the HDD installation of the new gravity sewer will occur within jurisdictional wetland resource areas, the proposed Project will: ▪ Result in no impacts to LUO, Coastal Bank, Riverbank, as all activities will be below the riverbed and wetland resource areas ▪ The HDD Entry and Exit Areas will be located within LSCSF and RFA, however the proposed work will not result in any permanent impacts to these wetland resource areas. Attachment A • Project Narrative Page 15 ▪ Utilize appropriate BMPs to protect wetland resource areas from sedimentation and soil disturbance during Project activities; and ▪ Implement an IR Contingency Plan in the event of an inadvertent return. The Town respectfully requests the Yarmouth Conservation Commission find the Project fully protective of the public interests identified in the MWPA and the Yarmouth Wetlands Protection Bylaw and issue an Order of Conditions for the proposed Project as currently designed. ATTACHMENT B ABUTTERS NOTIFICATION NOTIFICATION TO ABUTTERS UNDER THE MASSACHUSETTS WETLANDS PROTECTION ACT & TOWN OF YARMOUTH WETLAND BY-LAW, CHAPTER 143 In accordance with the second paragraph of the Massachusetts General Laws Chapter 131, Section 40, you are hereby notified of the following: A. The name of the applicant is ____Town of Yarmouth__________________________________ B. The applicant has filed a Notice of Intent with the Yarmouth Conservation Commission, seeking permission to remove, fill, dredge or alter an Area Subject to Protection under the Wetlands Protection Act (MGL c. 131 s. 40 & Town of Yarmouth Wetland By-Law, Chapter 143). C. The address of the lot where the activity is proposed is 316, 669, 674, 700, and 728 Route 28 D. Proposed work is to construct three new wastewater pumping stations (PS1, PS2, and PS3) and install a new 345-foot long double barrel sewer siphon beneath the Parker River using horizontal directional drilling (HDD). E. Copies of the Notice of Intent may be examined at the Yarmouth Town Hall at the Conservation Commission office between the hours of 9:00 a.m. and 4:00 p.m. Monday thru Friday. For more information, call (508) 398-2231 ext. 1288. F. Copies of the Notice of Intent may be obtained from either the applicant or applicant’s representative. Applicant’s phone number: (508) 398-2231 Or Applicant’s representatives phone number: (617) 452-6597 G. Information regarding the date, time and place of the public hearing may be obtained by calling the Yarmouth Conservation Commission office at (508) 398-2231 ext. 1288 H. Person sending this notification (applicant, representative or other) Name: CDM Smith Inc. (Magdalena Lofstedt) Address: 75 State Street, Suite 701, Boston MA 02019 Telephone: (617) 452-6597 NOTES: • Notice of the public hearing, including date, time and place will be published at least five (5) days in advance in a newspaper of general circulation. • Notice of the public hearing, including date, time and place will be posted in the Town Hall not less than forty-eight hours in advance. • You may also contact the Southeast Regional Office of the Department of Environmental Protection at (508) 946-2800 for more information about this application. 30/ 152/ / / ROBICHAUD GERHARD (LIFE EST) C/O ROBICHAUD JOHN R 27 MARBLE RD BARNSTABLE , MA 02630 30/ 153/ / / SIMPSON JOAN T TR C/O CRANBERRY VIEW LLC 500 OCEAN DR UNIT W-6-C JUNO BEACH , FL 33408 30/ 27/ / / FAITH AND WORKS LLC 56 ROUTE 6A YARMOUTH PORT , MA 02675 30/ 26/ / / CARVALHO JASON TR THREE ELEVEN MAIN RLTY TRUST 35 BOXWOOD LN BRIDGEWATER , MA 02324 38/ 5/ / / BARRY DONALD P C/O BARRY DONALD P TR 23 TRADERS LN WEST YARMOUTH , MA 02673 38/ 4/ / / MELLO WILSON CRANBERRY CORP 16 DENVER DR WEST YARMOUTH , MA 02673 30/ 154/ / / PENNY DOG LLC 324 ROUTE 28 WEST YARMOUTH , MA 02673 30/ 24/ / / CANDEV REALTY INC 327 ROUTE 28 WEST YARMOUTH , MA 02673 30/ 25/ / / KOUNADIS EVANGELIA TR 335 ROUTE 28 WEST YARMOUTH , MA 02673 Please use this signature to certify this list of propertiesabutting within 100' of the parcel located at:316 Route 28, West Yarmouth, MA 02673Assessors Map 30, Lot 153______________________________________Andy Machado, Director of AssessingMarch 21, 2024 24/ 92/ / / TOWN OF YARMOUTH CONSERVATION DEPT 1146 ROUTE 28 SOUTH YARMOUTH , MA 02664-4463 32/ 129/ / / HOLT DAVID R HOLT NANCY J 207 COACHMAN LN WEST BARNSTABLE , MA 02668 32/ 123/ / / MITROKOSTAS NAFSIKA E TR S&N REALTY TRUST PO BOX 260 SOUTH YARMOUTH , MA 02664 32/ 121/ / / GOLD VILLAGE WATERSIDE LLC 681 ROUTE 28 WEST YARMOUTH , MA 02673 32/ 118/ / / NEPTUNE LANE LLC C/O SILVIO DIGIOVANNI PO BOX 370 SOUTH YARMOUTH , MA 02664 32/ 117/ / / VRI 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LN WEST YARMOUTH , MA 02673 24/ 82/ / / SIKONSKI EDWARD M TRS DOHERTY MARYELLEN TRS 37 JUNIPER LN HOLDEN , MA 01520 24/ 83/ / / OCALLAGHAN JAMES C AND ELIZABETH MCGUINNESS ADELE AND BARRY 32 NIAGARA LN, WEST YARMOUTH , MA 02673 24/ 84/ / / MAYNARD MARGARET 91 GLENWOOD DR WESTFIELD , MA 01085-4920 32/ 92/ / / MARITIME HERITAGE RESEARCH LABS 16 MACMILLAN WHARF PROVINCETOWN , MA 02657 32/ 91/ / / MANNING GERALD TRS THE PARKER RIVER REALTY TRUST 121 MAYFLOWER TERR SOUTH YARMOUTH , MA 02664 32/ 89/ / / CAPTAIN PARKERS 558 LLC 121 MAYFLOWER TERR SOUTH YARMOUTH , MA 02664 32/ 90/ / / MIDDLE LAND LLC 121 MAYFLOWER TERR SOUTH YARMOUTH , MA 02664 Please use this signature to certify this list of properties abuttingwithin 100' of the parcel located at:669 Route 28, West Yarmouth, MA 02673Assessors Map 32, Lot 122 ______________________Andy MachadoDirector of AssessingMarch 21, 2024 32/ 121/ / / GOLD VILLAGE WATERSIDE LLC 681 ROUTE 28 WEST YARMOUTH , MA 02673 32/ 122/ / / TOWN OF YARMOUTH PARK DEPT 1146 ROUTE 28 SOUTH YARMOUTH , MA 02664-4463 40/ 86/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH , MA 02664-4463 32/ 86/ / / DEMERS HOLLY JEAN TRS DEMERS LAWRENCE D TRS 919 OLD BASS RIVER RD DENNIS , MA 02660 32/ 92/ / / MARITIME HERITAGE RESEARCH LABS 16 MACMILLAN WHARF PROVINCETOWN , MA 02657 32/ 88/ / / YANNATOS DIONYSIOS TR C/O JERRYS ICE CREAM LLC 121 MAYFLOWER TERRACE SOUTH YARMOUTH , MA 02664 32/ 93/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH , MA 02664-4463 32/ 91/ / / MANNING GERALD TRS THE PARKER RIVER REALTY TRUST 121 MAYFLOWER TERR SOUTH YARMOUTH , MA 02664 32/ 87/ / / YANNATOS GALARNEAU HELEN E C/O OLD BOG ROAD LLC 121 MAYFLOWER TERRACE SOUTH YARMOUTH , MA 02664 32/ 89/ / / CAPTAIN PARKERS 558 LLC 121 MAYFLOWER TERR SOUTH YARMOUTH , MA 02664 32/ 90/ / / MIDDLE LAND LLC 121 MAYFLOWER TERR SOUTH YARMOUTH , MA 02664 32/ 120/ / / KATZ STEVEN M 99 SULLIVAN RD WEST YARMOUTH , MA 02673 32/ 85/ C10/ / GUIDETTI MARINA T 333 BALCOM ST MANSFIELD , MA 02048 32/ 85/ C20/ / WOODHOUSE NATALIE 574 HIGH HILL RD DARTMOUTH , MA 02747 32/ 85/ C1/ / WATSON MICHAEL 73 LOWER COUNTY RD APT 4 DENNIS PORT , MA 02639 32/ 85/ C11/ / JEBOLA PROPERTIES INC 15 MARBLE RD SPENCER , MA 01562 32/ 85/ C12/ / VALLIS SAVVAS TRS VALLIS PENELOPE 45 MILTON ST ARLINGTON , MA 02174-8705 32/ 85/ C13/ / BELMONTE BONNIE L 638 ROUTE 28 UNIT 13 WEST YARMOUTH , MA 02673 32/ 85/ C14/ / CURRAN JOAN L 638 ROUTE 28 UNIT 14 WEST YARMOUTH , MA 02673 32/ 85/ C15/ / KALWEIT JAMES TR ABBKAM REALTY TRUST PO BOX 1780 SANDWICH , MA 02563 32/ 85/ C16/ / GOMES DELRICO 8 CHESTNUT ST ATHOL , MA 01331 32/ 85/ C17/ / ROSS LYUDMILA A TRS ROSS BEACHWOOD RLTY TRST 638 ROUTE 28 UNIT 17 , WEST YARMOUTH , MA 02673 32/ 85/ C18/ / DIFONZO JOSEPH A 189 HAMDEN CIR HYANNIS , MA 02601 32/ 85/ C19/ / GROENEVELD ERIK GROENEVELD COURTNEY 416 CONSTITUTION WAY KYLE , TX 78640 32/ 85/ C2/ / POWER STEPHEN T 13300 ANTONIO WAY DADE CITY , FL 33525 32/ 85/ C21/ / KEANE MEREDITH TR KEANE FAMILY NOM TRUST 56 OSCAR AVE BROCKTON , MA 02301 32/ 85/ C22/ / MORRISON BRIAN C/O MORRISON BRIAN T TR 638 ROUTE 28 UNIT 22 WEST YARMOUTH , MA 02673 32/ 85/ C23/ / S T POWER ENTERPRISES LLC 13300 ANTONIO WAY DADE CITY , FL 33525 32/ 85/ C24/ / KALWEIT JAMES TRS ABBKAM REALTY TRUST PO BOX 1780 SANDWICH , MA 02563 32/ 85/ C25/ / CEPPI ROBERT J 15 MARBLE RD SPENCER , MA 01562 32/ 85/ C3/ / FRENCH JAMES M CO TRS THE FRENCH FAMILY LIVING TRUST 611 EAST SECO PL PHOENIX , AZ 85086 32/ 85/ C4/ / SIDES JONATHAN 638 ROUTE 28 UNIT 4 WEST YARMOUTH , MA 02673 32/ 85/ C5/ / DIFONZO JOSEPH A C/O JEBOLA PROPERTIES INC 15 MARBLE RD SPENCER , MA 01562 32/ 85/ C6/ / OCONNELL JOANNE B 638 ROUTE 28 UNIT 3 WEST YARMOUTH , MA 02673 32/ 85/ C7/ / GUIDETTI MARINA T 333 BALCOM ST MANSFIELD , MA 02048 32/ 85/ C8/ / PATENAUDE KATHLEEN M C/O PATENAUDE KATHLEEN M TR 20 DAY ST DRACUT , MA 01826 32/ 85/ C9/ / KRAM STARMELLA L 638 ROUTE 28 UNIT 9 WEST YARMOUTH , MA 02673 BEACHWOOD CONDOS CONDO MAIN 638 ROUTE 28 WEST YARMOUTH , MA 02673 Please use this signature to certify this list of propertiesabutting within 100' of the parcel located at:674 Route 28, West Yarmouth, MA 02673Assessors Map 32, Lot 92______________________________________Andy Machado, Director of AssessingMarch 21, 2024 32/ 121/ / / GOLD VILLAGE WATERSIDE LLC 681 ROUTE 28 WEST YARMOUTH , MA 02673 40/ 86/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH , MA 02664-4463 32/ 92/ / / MARITIME HERITAGE RESEARCH LABS 16 MACMILLAN WHARF PROVINCETOWN , MA 02657 32/ 93/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH , MA 02664-4463 32/ 94/ / / PIRATES COVE EAST INC 728 ROUTE 28 SOUTH YARMOUTH , MA 02664-5158 32/ 119/ / / PIER 7 CONDOMINIUM TRUST C/O R J + R A OSTELLINO TRS 711 ROUTE 28 SOUTH YARMOUTH , MA 02664-5138 32/ 120/ / / KATZ STEVEN M 99 SULLIVAN RD WEST YARMOUTH , MA 02673 Please use this signature to certify this list of propertiesabutting within 100' of the parcel located at:700 Route 28, South Yarmouth, MA 02664Assessors Map 32, Lot 93______________________________________Andy Machado, Director of AssessingMarch 21, 2024 40/ 86/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH, MA 02664-4463 32/ 97/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH, MA 02664-4463 32/ 93/ / / TOWN OF YARMOUTH 1146 ROUTE 28 SOUTH YARMOUTH, MA 02664-4463 32/ 94/ / / PIRATES COVE EAST INC 728 ROUTE 28 SOUTH YARMOUTH, MA 02664-5158 33/ 36.1/ / / MASH REALTY LLC 760 ROUTE 28 SOUTH YARMOUTH, MA 02664 32/ 95/ / / PIRATES COVE EAST INC 728 ROUTE 28 SOUTH YARMOUTH, MA 02664 32/ 119/ / / PIER 7 CONDOMINIUM TRUST C/O R J + R A OSTELLINO TRS 711 ROUTE 28 SOUTH YARMOUTH, MA 02664-5138 32/ 111/ / / MULLEN CHRISTOPHER P SR MULLEN TERESA F 110 NORTH PEMBROKE RD PEMBROKE, NH 03275 32/ 114/ / / THE 731 MAIN STREET LLC 17 NEPTUNE LN SOUTH YARMOUTH, MA 02664 32/ 113/ / / DA SILVA JENIA 2 HOLLY LN EAST SANDWICH, MA 02537 32/ 110/ / / GOSSELIN EDWARD J W B WILLIAMS L BURCH 20 N MAIN ST SOUTH YARMOUTH, MA 02664-3150 32/ 112/ / / SHADED SPACES CAPE COD LLC 580 EASTSIDE RD WRENTHAM, MA 02093 33/ 35/ C1/ 99/ LEWIS BAY PROPERTIES INC PO BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C1/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C25/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C24/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C23/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C22/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C21/ / LEWIS BAY PROPERTIES INC PO BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C20/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C19/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C18/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C17/ / LEWIS BAY PROPERTIES INC PO BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C16/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C15/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C14/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C12/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C11/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C10/ / LEWIS BAY PROPERTIES INC PO BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C9/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C8/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C7/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C6/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C5/ / LEWIS BAY PROPERTIES INC PO BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C4/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C3/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 33/ 35/ C2/ / LEWIS BAY PROPERTIES INC P O BOX 753 WEST YARMOUTH, MA 02673 Please use this signature to certify this list of properties abutting within 100' of the parcel located at:728 Route 28, South Yarmouth, MA 02664Assessors Map 32, Lot 94____________________________________________Andy Machado, Director of Assessing ATTACHMENT C STORMWATER MANAGEMENT REPORT Page 1 of 5 Pumping Station 2 Stormwater Management Report 1.0 Existing Conditions The Town of Yarmouth Department of Public Works (Yarmouth DPW) is proposing to construct a new wastewater pumping station at #316 Route 28. This pumping station is part of a larger overall proposed wastewater collection and conveyance system being designed to collected wastewater from the Phase 1 are and convey it to the proposed Water Resource Recovery Facility at 99 Buck Island Road. This pumping station will be part of Phase 1 - Contract 6. The proposed pumping station will be located on the western side of an existing private parking lot at 316 Route 28. The pumping station is bounded by Route 28 to the south, a cranberry bog to the north and west, and commercial properties to the east. The pumping station will be constructed in an area that is a predominantly bituminous pavement and hard-packed gravel parking lot. Between the road and the parking lot is strip of grass. Most of the proposed location for the pumping station is within the within the 100-year floodplain, with a 100-year flood elevation of 11.0 ft. This site is also within Land Subject to Coastal Storm Flowage (LSCSF). The topography at the site is generally flat, with grades ranging between elevation 9 to 11, and sloping towards the east in the parking lot, which has an existing closed drainage system. The total modeled area, which is predominantly within the limit of disturbance is 8,160 sf (0.19 ac), with an existing impervious area of 3,160 sf (0.07 ac). Figure 1 shows the existing conditions drainage area map. 2.0 Proposed Conditions Under proposed conditions, a small pumping station control building, flow meter vault, valve vault, wet well, standby generator and access driveway will be constructed on this property. The pumping station, wet well, valve vault, generator and part of the driveway will be elevated to El. 13.0 ft to be 2 feet above the 100-year flood elevation. Four-inch-deep gravel stone surfacing will be placed around the pumping station, wet well, valve vault, and generator at elevation 13.0 ft. The gravel surfacing will provide water quality treatment for the impervious area associated with the wet well, generator, the northern half of the pumping station and a section of the driveway. A bioretention area is proposed along Route 28 to provide water quality treatment, recharge to groundwater and peak attenuation for most of the access drive, the flow meter vault and the southern half of the control building. Overflows from the bioretention area will be directed to the west towards the cranberry bog. The embankment area for the elevated pumping station will be vegetated with loam and seed, ornamental trees, evergreen shrubs and groundcover. Under proposed conditions, the total impervious area is 3,550 sf (0.08 ac), an increase of 390 sf (0.01 ac). Because there is an increase in the impervious area, this project qualifies as a new development project under the Massachusetts Stormwater Handbook. Figure 2 shows the proposed conditions drainage area map. Pumping Station 2 Stormwater Management Report Page 2 of 5 3.0 Drainage Analysis CDM Smith performed drainage analyses for the PS2 pumping station site for existing and proposed conditions. The drainage analyses determined peak rates of runoff during the 2-, 10-, 25-, 50-, and 100-year, 24-hour storm events using HydroCAD, version 10.2. This computer model simulates stormwater runoff flows through drainage areas and stormwater management facilities and is based on the Natural Resources Soil Conservation Service (NRCS) Method. Following is a summary of the methodology and assumptions used to perform the drainage analyses.  Precipitation data for standard storms used in the models were taken from NOAA Atlas 14, Volume 10. The estimated precipitation depths during the 2-, 10-, 25-, 50-, and 100-year 24- hour storms are 3.38, 4.92, 5.88, 6.62, and 7.37 inches, respectively (see Appendix A).  The Natural Resources Conservation Service’s (NRCS) Web Soil Survey was consulted to determine the hydrologic soil groups (HSG) for the site. The NRCS has classified the site as “Carver coarse sand” and assigned HSG “A” to this soil. Between February and April 2011, CDM Smith implemented a geotechnical program for proposed pumping station locations. On April 20, 2011, CDM Smith advanced one borings at the Pumping Station 2 location. The soil in the boring was uniform, described as medium dense, fine to coarse sand. Groundwater was encountered at elevation 2.8 ft. Based on the laboratory results indicating less than 2% fines, an infiltration rate of 8.27 in/hr has been assumed for the recharge calculations in the bioretention area. This value is based on Table 2.3.3 in Volume 3, Chapter 1 of Massachusetts Stormwater Handbook, where “sand” has an infiltration rate of 8.27 inches/hour and is assigned to HSG “A” soils. Appendix B provides soils information from Web Soil Survey and the geotechnical field exploration program.  The project site was modeled as one drainage area for existing conditions; this drainage area is based predominantly on the limit of disturbance for the pumping station. For proposed conditions, it was modeled as four drainage areas: the pumping station area tributary to the bioretention area, and the pumping station site that discharges stormwater runoff to the north, west and east (3 drainage areas). The drainage areas are shown on Figures 1 and 2. Evaluation of existing and proposed conditions compares the total stormwater runoff generated at the location of the pumping station. Thus, the design point is the parking lot.  Curve Numbers (CNs) for the different land uses on the site were selected based on HSG “A” soils. Land uses included woods/grass combination, grass cover, gravel and paved/impervious areas. Weighted CNs were calculated in HydroCAD.  Times of concentration (Tc) were based on the Velocity Method in the NRCS National Engineering Handbook (May 2010). A minimum Tc of 6 minutes was used for all drainage areas. HydroCAD was used to generate peak rates of runoff for existing and proposed conditions. For conservatism in the design, infiltration within the bioretention area was not included in the HydroCAD modeling. This approach provides worst-case peak rates of runoff if the bioretention area is not maintained and it becomes clogged and no longer provides recharge. Pumping Station 2 Stormwater Management Report Page 3 of 5 Table 3-1 provides a summary of modeling results for existing and proposed conditions at the design point. As this table shows, peak rates of runoff for proposed conditions are less than existing conditions for all storm events. The HydroCAD modeling input and output can be found in Appendix C. Table 3-1 Pumping Station 2 – West Yarmouth, Massachusetts HydroCAD Modeling Results Design Point: Parking Lot Storm Event Existing Conditions Proposed Conditions Peak Rate of Runoff (cfs) Peak Rate of Runoff (cfs) 2-Year, 24-Hour 0.4 0.1 10-Year, 24-Hour 0.7 0.3 25-Year, 24-Hour 0.9 0.4 50-Year, 24-Hour 1.0 0.5 100-Year, 24-Hour 1.2 0.6 The site was also analyzed for compliance with the recharge volume (Rv) and water quality volume (WQv) requirements in the Massachusetts Stormwater Handbook. Since the soils at the location of the pumping station are located on HSG “A” soils, the recharge target depth factor of 0.60 inches was used. The calculation of the WQv and Rv is based on the impervious area associated with the pump station and does not include the impervious area for the parking lot that will be resurfaced as part of this project because that is existing impervious area. The total corresponding Rv is 84 cf. Because the infiltration rate is assumed to be 8.27 in/hr based on the soil boring, the water quality volume is based on 1.0 inch times the total impervious area, with a total corresponding WQv of 140 cf. Storage for the Rv and WQv for the site is provided in the gravel stone surfacing and bioretention area. The drawdown time of the water in the bioretention area was calculated using the total storage volume provided below the spillway and the total available bottom surface area of the bioretention area, excluding the sediment forebay area. The drawdown calculations indicate that stormwater will infiltrate within 12 hours, which is within the required 72 hours, based on the infiltration rate of 8.27 in/hr. Table 3-2 summarizes the impervious area, the calculated required recharge and water quality volumes, along with the total storage volume provided in the gravel stone surfacing and bioretention area. As shown in this table, the gravel stone surfacing and bioretention area provide sufficient storage volume to meet the total required recharge volume and water quality volume for the pumping station. However, it is noted that a small portion of the access driveway is not tributary to the bioretention area or gravel stone surfacing because of the need to elevate the pumping station. Stormwater runoff from this area flows directly to the existing parking lot. Appendix D provides the recharge volume, water quality volume, and drawdown calculations. Pumping Station 2 Stormwater Management Report Page 4 of 5 Table 3-2 Summary of Overall Impervious Area, Rv and WQv Pumping Station 2 Stormwater Management Facility Impervious Area (sf) Recharge Volume (cf) Water Quality Volume (cf) Volume Provided (cf) Gravel Stone Surfacing 450 23 38 59 Bioretention Area 803 40 67 170 Total 1253 63 105 229 For new development projects, stormwater management systems must be designed to remove 80% of the average annual load (post-construction conditions) of Total Suspended Solids (TSS). The gravel stone surfacing around the wet well, generator, the northern half of the control building and a small section of the driveway will provide 80% TSS removal. The control building, generator, wet well are considered clean surfaces and, since the access driveway will be occasionally used and is a small portion of the overall impervious area tributary to the gravel stone surfacing, pretreatment is not provided. For the bioretention area, which provides stormwater treatment for most of the access drive, the flow meter vault and the southern half of the control building, pretreatment will be provided to help preserve the longevity of the bioretention area. Because the infiltration rate is 8.27 in/hr, a pretreatment TSS removal rate of 44% is required. Pretreatment will be provided through a sediment forebay in the bioretention area, which provides 25% TSS removal. Additional pretreatment, such as a grass channel or filter strip designed per the Massachusetts Stormwater Handbook, is not feasible given the site constraints of an elevated pumping station located on a parking lot. However, stormwater runoff from the access driveway, which will be occasionally used, will receive some additional pretreatment as it sheet flows through grass to the bioretention area. This additional pretreatment cannot be quantified because it does not meet the design requirements in the Massachusetts Stormwater Handbook. The bioretention area provides an overall TSS removal rate of 90%. The TSS worksheets are provided in Appendix E. 4.0 Compliance with Stormwater Standards Under the Massachusetts Stormwater Management Standards, the project is classified as a new development because the impervious area at Pumping Station 2 will increase under developed conditions. Hence, the project is required to meet the applicable Stormwater Management Standards. The following summary describes compliance with each of the stormwater standards. The Stormwater Checklist is provided at the end of this section. 4.1 Stormwater Standard No. 1 – No New Untreated Discharges The proposed project fully meets the requirement of Stormwater Standard No. 1, as there are no new untreated discharges. Stormwater runoff from the pumping station site will receive treatment in the gravel stone surfacing and in the bioretention area. 4.2 Stormwater Standard No. 2 – Peak Rate Attenuation This standard is fully met. As shown on Table 3-1, peak rates of runoff for proposed conditions are less than those for existing conditions for all storm events. Pumping Station 2 Stormwater Management Report Page 5 of 5 4.3 Stormwater Standard No. 3- Recharge Recharge to groundwater is fully met through the gravel stone surfacing and bioretention area. Since the soils are HSG “A” soils, the target depth factor for recharge is 0.6 inches. The Static Method was used to demonstrate that proposed bioretention area will drain within 72 hours. 4.4 Stormwater Standard No. 4 – Water Quality This standard is fully met. Water quality volume calculation is based on one inch because the infiltration rate is 8.27 in/hr. The gravel stone surfacing around the wet well, generator, the northern half of the control building and a small section of the driveway will provide 80% TSS removal. The bioretention area, which provides stormwater treatment for most of the access drive, the flow meter vault and the southern half of the control building, will provide 90% TSS removal. Because of the high infiltration rate, 44% TSS pretreatment is required; however, due to site constraints, only 25% TSS pretreatment is provided through the sediment forebay. It is noted that the access driveway will only have occasional use. The TSS removal worksheets are provided in Appendix E. 4.5 Stormwater Standard No. 5 – Land Uses With Higher Potential Pollutant Loads This standard is not applicable to this project. There are no LUHPPLs in the project area. 4.6 Stormwater Standard No. 6 – Critical Areas This standard is met; the site is not located within a critical area. 4.7 Stormwater Standard No. 7 – Redevelopment This standard is not applicable to this project; it is a new development project because there is an increase in impervious area. 4.8 Stormwater Standard No. 8 – Construction Period Pollution Prevention and Erosion and Sedimentation Control The project is subject to a NPDES General Construction Permit, which will be obtained by the Contractor as part of the Phase 1 – Contract 6. A copy of the Stormwater Pollution Prevention Plan (SWPPP) will be submitted by the Contractor prior to construction. 4.9 Stormwater Standard No. 9 – Operation and Maintenance Plans An Operation and Maintenance Plan and Long-Term Pollution Prevention Plan are included with this submittal in Appendix F. 4.10 Stormwater Standard No. 10 – Prohibition of Illicit Discharges The proposed project fully meets the requirement of Stormwater Standard No. 10 as there are no illicit discharges. Stormwater Checklist Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 1 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report A. Introduction Important: When filling out forms on the computer, use only the tab key to move your cursor - do not use the return key. A Stormwater Report must be submitted with the Notice of Intent permit application to document compliance with the Stormwater Management Standards. The following checklist is NOT a substitute for the Stormwater Report (which should provide more substantive and detailed information) but is offered here as a tool to help the applicant organize their Stormwater Management documentation for their Report and for the reviewer to assess this information in a consistent format. As noted in the Checklist, the Stormwater Report must contain the engineering computations and supporting information set forth in Volume 3 of the Massachusetts Stormwater Handbook. The Stormwater Report must be prepared and certified by a Registered Professional Engineer (RPE) licensed in the Commonwealth. The Stormwater Report must include: · The Stormwater Checklist completed and stamped by a Registered Professional Engineer (see page 2) that certifies that the Stormwater Report contains all required submittals.1 This Checklist is to be used as the cover for the completed Stormwater Report. · Applicant/Project Name · Project Address · Name of Firm and Registered Professional Engineer that prepared the Report · Long-Term Pollution Prevention Plan required by Standards 4-6 · Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan required by Standard 82 · Operation and Maintenance Plan required by Standard 9 In addition to all plans and supporting information, the Stormwater Report must include a brief narrative describing stormwater management practices, including environmentally sensitive site design and LID techniques, along with a diagram depicting runoff through the proposed BMP treatment train. Plans are required to show existing and proposed conditions, identify all wetland resource areas, NRCS soil types, critical areas, Land Uses with Higher Potential Pollutant Loads (LUHPPL), and any areas on the site where infiltration rate is greater than 2.4 inches per hour. The Plans shall identify the drainage areas for both existing and proposed conditions at a scale that enables verification of supporting calculations. As noted in the Checklist, the Stormwater Management Report shall document compliance with each of the Stormwater Management Standards as provided in the Massachusetts Stormwater Handbook. The soils evaluation and calculations shall be done using the methodologies set forth in Volume 3 of the Massachusetts Stormwater Handbook. To ensure that the Stormwater Report is complete, applicants are required to fill in the Stormwater Report Checklist by checking the box to indicate that the specified information has been included in the Stormwater Report. If any of the information specified in the checklist has not been submitted, the applicant must provide an explanation. The completed Stormwater Report Checklist and Certification must be submitted with the Stormwater Report. 1 The Stormwater Report may also include the Illicit Discharge Compliance Statement required by Standard 10. If not included in the Stormwater Report, the Illicit Discharge Compliance Statement must be submitted prior to the discharge of stormwater runoff to the post-construction best management practices. 2 For some complex projects, it may not be possible to include the Construction Period Erosion and Sedimentation Control Plan in the Stormwater Report. In that event, the issuing authority has the discretion to issue an Order of Conditions that approves the project and includes a condition requiring the proponent to submit the Construction Period Erosion and Sedimentation Control Plan before commencing any land disturbance activity on the site. Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 3 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) LID Measures: Stormwater Standards require LID measures to be considered. Document what environmentally sensitive design and LID Techniques were considered during the planning and design of the project: No disturbance to any Wetland Resource Areas Site Design Practices (e.g. clustered development, reduced frontage setbacks) Reduced Impervious Area (Redevelopment Only) Minimizing disturbance to existing trees and shrubs LID Site Design Credit Requested: Credit 1 Credit 2 Credit 3 Use of “country drainage” versus curb and gutter conveyance and pipe Bioretention Cells (includes Rain Gardens) Constructed Stormwater Wetlands (includes Gravel Wetlands designs) Treebox Filter Water Quality Swale Grass Channel Green Roof Other (describe): Standard 1: No New Untreated Discharges No new untreated discharges Outlets have been designed so there is no erosion or scour to wetlands and waters of the Commonwealth Supporting calculations specified in Volume 3 of the Massachusetts Stormwater Handbook included. Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 4 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 2: Peak Rate Attenuation Standard 2 waiver requested because the project is located in land subject to coastal storm flowage and stormwater discharge is to a wetland subject to coastal flooding. Evaluation provided to determine whether off-site flooding increases during the 100-year 24-hour storm. Calculations provided to show that post-development peak discharge rates do not exceed pre- development rates for the 2-year and 10-year 24-hour storms. If evaluation shows that off-site flooding increases during the 100-year 24-hour storm, calculations are also provided to show that post-development peak discharge rates do not exceed pre-development rates for the 100-year 24- hour storm. Standard 3: Recharge Soil Analysis provided. Required Recharge Volume calculation provided. Required Recharge volume reduced through use of the LID site Design Credits. Sizing the infiltration, BMPs is based on the following method: Check the method used. Static Simple Dynamic Dynamic Field1 Runoff from all impervious areas at the site discharging to the infiltration BMP. Runoff from all impervious areas at the site is not discharging to the infiltration BMP and calculations are provided showing that the drainage area contributing runoff to the infiltration BMPs is sufficient to generate the required recharge volume. Recharge BMPs have been sized to infiltrate the Required Recharge Volume. Recharge BMPs have been sized to infiltrate the Required Recharge Volume only to the maximum extent practicable for the following reason: Site is comprised solely of C and D soils and/or bedrock at the land surface M.G.L. c. 21E sites pursuant to 310 CMR 40.0000 Solid Waste Landfill pursuant to 310 CMR 19.000 Project is otherwise subject to Stormwater Management Standards only to the maximum extent practicable. Calculations showing that the infiltration BMPs will drain in 72 hours are provided. Property includes a M.G.L. c. 21E site or a solid waste landfill and a mounding analysis is included. 1 80% TSS removal is required prior to discharge to infiltration BMP if Dynamic Field method is used. Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 5 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 3: Recharge (continued) The infiltration BMP is used to attenuate peak flows during storms greater than or equal to the 10- year 24-hour storm and separation to seasonal high groundwater is less than 4 feet and a mounding analysis is provided. Documentation is provided showing that infiltration BMPs do not adversely impact nearby wetland resource areas. Standard 4: Water Quality The Long-Term Pollution Prevention Plan typically includes the following: · Good housekeeping practices; · Provisions for storing materials and waste products inside or under cover; · Vehicle washing controls; · Requirements for routine inspections and maintenance of stormwater BMPs; · Spill prevention and response plans; · Provisions for maintenance of lawns, gardens, and other landscaped areas; · Requirements for storage and use of fertilizers, herbicides, and pesticides; · Pet waste management provisions; · Provisions for operation and management of septic systems; · Provisions for solid waste management; · Snow disposal and plowing plans relative to Wetland Resource Areas; · Winter Road Salt and/or Sand Use and Storage restrictions; · Street sweeping schedules; · Provisions for prevention of illicit discharges to the stormwater management system; · Documentation that Stormwater BMPs are designed to provide for shutdown and containment in the event of a spill or discharges to or near critical areas or from LUHPPL; · Training for staff or personnel involved with implementing Long-Term Pollution Prevention Plan; · List of Emergency contacts for implementing Long-Term Pollution Prevention Plan. A Long-Term Pollution Prevention Plan is attached to Stormwater Report and is included as an attachment to the Wetlands Notice of Intent. Treatment BMPs subject to the 44% TSS removal pretreatment requirement and the one inch rule for calculating the water quality volume are included, and discharge: is within the Zone II or Interim Wellhead Protection Area is near or to other critical areas is within soils with a rapid infiltration rate (greater than 2.4 inches per hour) involves runoff from land uses with higher potential pollutant loads. The Required Water Quality Volume is reduced through use of the LID site Design Credits. Calculations documenting that the treatment train meets the 80% TSS removal requirement and, if applicable, the 44% TSS removal pretreatment requirement, are provided. Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 6 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 4: Water Quality (continued) The BMP is sized (and calculations provided) based on: The ½” or 1” Water Quality Volume or The equivalent flow rate associated with the Water Quality Volume and documentation is provided showing that the BMP treats the required water quality volume. The applicant proposes to use proprietary BMPs, and documentation supporting use of proprietary BMP and proposed TSS removal rate is provided. This documentation may be in the form of the propriety BMP checklist found in Volume 2, Chapter 4 of the Massachusetts Stormwater Handbook and submitting copies of the TARP Report, STEP Report, and/or other third party studies verifying performance of the proprietary BMPs. A TMDL exists that indicates a need to reduce pollutants other than TSS and documentation showing that the BMPs selected are consistent with the TMDL is provided. Standard 5: Land Uses With Higher Potential Pollutant Loads (LUHPPLs) The NPDES Multi-Sector General Permit covers the land use and the Stormwater Pollution Prevention Plan (SWPPP) has been included with the Stormwater Report. The NPDES Multi-Sector General Permit covers the land use and the SWPPP will be submitted prior to the discharge of stormwater to the post-construction stormwater BMPs. The NPDES Multi-Sector General Permit does not cover the land use. LUHPPLs are located at the site and industry specific source control and pollution prevention measures have been proposed to reduce or eliminate the exposure of LUHPPLs to rain, snow, snow melt and runoff, and been included in the long term Pollution Prevention Plan. All exposure has been eliminated. All exposure has not been eliminated and all BMPs selected are on MassDEP LUHPPL list. The LUHPPL has the potential to generate runoff with moderate to higher concentrations of oil and grease (e.g. all parking lots with >1000 vehicle trips per day) and the treatment train includes an oil grit separator, a filtering bioretention area, a sand filter or equivalent. Standard 6: Critical Areas The discharge is near or to a critical area and the treatment train includes only BMPs that MassDEP has approved for stormwater discharges to or near that particular class of critical area. Critical areas and BMPs are identified in the Stormwater Report. Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 7 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 7: Redevelopments and Other Projects Subject to the Standards only to the maximum extent practicable The project is subject to the Stormwater Management Standards only to the maximum Extent Practicable as a: Limited Project Small Residential Projects: 5-9 single family houses or 5-9 units in a multi-family development provided there is no discharge that may potentially affect a critical area. Small Residential Projects: 2-4 single family houses or 2-4 units in a multi-family development with a discharge to a critical area Marina and/or boatyard provided the hull painting, service and maintenance areas are protected from exposure to rain, snow, snow melt and runoff Bike Path and/or Foot Path Redevelopment Project Redevelopment portion of mix of new and redevelopment. Certain standards are not fully met (Standard No. 1, 8, 9, and 10 must always be fully met) and an explanation of why these standards are not met is contained in the Stormwater Report. The project involves redevelopment and a description of all measures that have been taken to improve existing conditions is provided in the Stormwater Report. The redevelopment checklist found in Volume 2 Chapter 3 of the Massachusetts Stormwater Handbook may be used to document that the proposed stormwater management system (a) complies with Standards 2, 3 and the pretreatment and structural BMP requirements of Standards 4-6 to the maximum extent practicable and (b) improves existing conditions. Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan must include the following information: · Narrative; · Construction Period Operation and Maintenance Plan; · Names of Persons or Entity Responsible for Plan Compliance; · Construction Period Pollution Prevention Measures; · Erosion and Sedimentation Control Plan Drawings; · Detail drawings and specifications for erosion control BMPs, including sizing calculations; · Vegetation Planning; · Site Development Plan; · Construction Sequencing Plan; · Sequencing of Erosion and Sedimentation Controls; · Operation and Maintenance of Erosion and Sedimentation Controls; · Inspection Schedule; · Maintenance Schedule; · Inspection and Maintenance Log Form. A Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan containing the information set forth above has been included in the Stormwater Report. Pumping Station 2 swcheck • 04/01/08 Stormwater Report Checklist • Page 8 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report Checklist (continued) Standard 8: Construction Period Pollution Prevention and Erosion and Sedimentation Control (continued) The project is highly complex and information is included in the Stormwater Report that explains why it is not possible to submit the Construction Period Pollution Prevention and Erosion and Sedimentation Control Plan with the application. A Construction Period Pollution Prevention and Erosion and Sedimentation Control has not been included in the Stormwater Report but will be submitted before land disturbance begins. The project is not covered by a NPDES Construction General Permit. The project is covered by a NPDES Construction General Permit and a copy of the SWPPP is in the Stormwater Report. The project is covered by a NPDES Construction General Permit but no SWPPP been submitted. The SWPPP will be submitted BEFORE land disturbance begins. Standard 9: Operation and Maintenance Plan The Post Construction Operation and Maintenance Plan is included in the Stormwater Report and includes the following information: Name of the stormwater management system owners; Party responsible for operation and maintenance; Schedule for implementation of routine and non-routine maintenance tasks; Plan showing the location of all stormwater BMPs maintenance access areas; Description and delineation of public safety features; Estimated operation and maintenance budget; and Operation and Maintenance Log Form. The responsible party is not the owner of the parcel where the BMP is located and the Stormwater Report includes the following submissions: A copy of the legal instrument (deed, homeowner’s association, utility trust or other legal entity) that establishes the terms of and legal responsibility for the operation and maintenance of the project site stormwater BMPs; A plan and easement deed that allows site access for the legal entity to operate and maintain BMP functions. Standard 10: Prohibition of Illicit Discharges The Long-Term Pollution Prevention Plan includes measures to prevent illicit discharges; An Illicit Discharge Compliance Statement is attached; NO Illicit Discharge Compliance Statement is attached but will be submitted prior to the discharge of any stormwater to post-construction BMPs. Appendix A Rainfall Data NOAA Atlas 14, Volume 10, Version 3 Location name: West Yarmouth, Massachusetts, USA* Latitude: 41.6524°, Longitude: -70.2503° Elevation: 14 ft** * source: ESRI Maps ** source: USGS POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Sandra Pavlovic, Michael St. Laurent, Carl Trypaluk, Dale Unruh, Orlan Wilhite NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches) Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 0.266 (0.216-0.325) 0.337 (0.273-0.412) 0.453 (0.366-0.556) 0.549 (0.441-0.679) 0.681 (0.526-0.885) 0.779 (0.589-1.04) 0.884 (0.647-1.23) 1.01 (0.687-1.42) 1.20 (0.781-1.75) 1.36 (0.863-2.03) 10-min 0.377 (0.306-0.461) 0.477 (0.387-0.584) 0.641 (0.518-0.787) 0.777 (0.623-0.960) 0.964 (0.745-1.25) 1.10 (0.833-1.47) 1.25 (0.917-1.74) 1.43 (0.974-2.02) 1.70 (1.11-2.49) 1.93 (1.22-2.88) 15-min 0.444 (0.360-0.542) 0.561 (0.455-0.687) 0.753 (0.609-0.925) 0.913 (0.733-1.13) 1.13 (0.877-1.48) 1.30 (0.980-1.73) 1.47 (1.08-2.05) 1.68 (1.15-2.38) 2.00 (1.30-2.92) 2.27 (1.44-3.39) 30-min 0.658 (0.534-0.804) 0.828 (0.672-1.01) 1.11 (0.894-1.36) 1.34 (1.07-1.65) 1.66 (1.28-2.16) 1.89 (1.43-2.52) 2.15 (1.57-2.99) 2.45 (1.67-3.46) 2.92 (1.90-4.26) 3.31 (2.10-4.94) 60-min 0.872 (0.708-1.07) 1.10 (0.888-1.34) 1.46 (1.18-1.79) 1.76 (1.41-2.18) 2.18 (1.68-2.84) 2.49 (1.88-3.32) 2.82 (2.07-3.93) 3.22 (2.19-4.54) 3.83 (2.49-5.60) 4.35 (2.76-6.48) 2-hr 1.23 (1.00-1.49) 1.52 (1.24-1.85) 2.00 (1.63-2.45) 2.41 (1.94-2.95) 2.96 (2.30-3.81) 3.36 (2.56-4.44) 3.81 (2.81-5.24) 4.34 (2.98-6.04) 5.14 (3.37-7.41) 5.82 (3.72-8.56) 3-hr 1.47 (1.20-1.78) 1.81 (1.48-2.19) 2.36 (1.93-2.87) 2.82 (2.29-3.44) 3.45 (2.70-4.42) 3.92 (3.00-5.14) 4.43 (3.28-6.05) 5.03 (3.47-6.96) 5.94 (3.92-8.50) 6.71 (4.31-9.79) 6-hr 1.92 (1.59-2.31) 2.33 (1.92-2.80) 3.00 (2.47-3.62) 3.56 (2.90-4.31) 4.32 (3.40-5.48) 4.89 (3.76-6.34) 5.50 (4.09-7.40) 6.21 (4.32-8.48) 7.26 (4.84-10.3) 8.14 (5.28-11.7) 12-hr 2.41 (2.00-2.87) 2.88 (2.39-3.44) 3.64 (3.01-4.37) 4.28 (3.52-5.15) 5.16 (4.08-6.46) 5.81 (4.50-7.44) 6.50 (4.86-8.61) 7.28 (5.12-9.83) 8.41 (5.66-11.7) 9.33 (6.12-13.3) 24-hr 2.86 (2.40-3.39) 3.38 (2.82-4.01) 4.22 (3.52-5.02) 4.92 (4.07-5.88) 5.88 (4.69-7.30) 6.62 (5.14-8.36) 7.37 (5.53-9.60) 8.19 (5.82-10.9) 9.34 (6.35-12.8) 10.3 (6.79-14.4) 2-day 3.26 (2.75-3.84) 3.81 (3.21-4.49) 4.71 (3.95-5.56) 5.45 (4.54-6.47) 6.47 (5.19-7.95) 7.25 (5.68-9.06) 8.05 (6.08-10.3) 8.90 (6.38-11.7) 10.1 (6.91-13.6) 11.0 (7.34-15.2) 3-day 3.54 (3.00-4.15) 4.10 (3.46-4.81) 5.01 (4.21-5.89) 5.76 (4.82-6.81) 6.80 (5.48-8.30) 7.59 (5.97-9.42) 8.40 (6.38-10.7) 9.26 (6.68-12.1) 10.4 (7.21-14.0) 11.4 (7.64-15.6) 4-day 3.78 (3.21-4.42) 4.34 (3.68-5.07) 5.25 (4.43-6.16) 6.01 (5.04-7.08) 7.05 (5.70-8.58) 7.84 (6.20-9.70) 8.66 (6.60-11.0) 9.53 (6.90-12.4) 10.7 (7.46-14.4) 11.7 (7.90-15.9) 7-day 4.41 (3.76-5.13) 4.98 (4.24-5.79) 5.90 (5.01-6.88) 6.67 (5.63-7.81) 7.73 (6.29-9.33) 8.53 (6.78-10.5) 9.36 (7.18-11.8) 10.2 (7.47-13.2) 11.4 (8.01-15.1) 12.4 (8.43-16.7) 10-day 5.01 (4.29-5.80) 5.60 (4.78-6.48) 6.55 (5.58-7.61) 7.35 (6.22-8.57) 8.44 (6.90-10.1) 9.28 (7.40-11.3) 10.1 (7.80-12.7) 11.0 (8.08-14.1) 12.2 (8.60-16.1) 13.2 (9.01-17.6) 20-day 6.82 (5.88-7.84) 7.50 (6.46-8.63) 8.62 (7.40-9.94) 9.55 (8.14-11.1) 10.8 (8.91-12.8) 11.8 (9.49-14.2) 12.8 (9.89-15.7) 13.8 (10.2-17.4) 15.0 (10.7-19.4) 15.9 (11.0-20.9) 30-day 8.38 (7.25-9.59) 9.16 (7.92-10.5) 10.4 (8.98-12.0) 11.5 (9.83-13.2) 12.9 (10.7-15.2) 14.1 (11.3-16.8) 15.2 (11.7-18.4) 16.2 (12.1-20.3) 17.4 (12.5-22.4) 18.3 (12.7-23.9) 45-day 10.4 (9.03-11.8) 11.3 (9.79-12.9) 12.7 (11.0-14.6) 13.9 (12.0-16.0) 15.6 (12.9-18.3) 16.9 (13.7-20.0) 18.1 (14.1-21.8) 19.2 (14.4-23.9) 20.5 (14.8-26.2) 21.4 (15.0-27.7) 60-day 12.1 (10.6-13.8) 13.1 (11.4-14.9) 14.7 (12.8-16.8) 16.0 (13.8-18.3) 17.9 (14.8-20.8) 19.3 (15.7-22.7) 20.7 (16.1-24.7) 21.8 (16.5-27.0) 23.2 (16.8-29.4) 24.1 (17.0-31.0) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical Back to Top Maps & aerials Small scale terrain Large scale terrain Large scale map + – 3km 2mi + – 100km 60mi Large scale aerial Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Questions?: HDSC.Questions@noaa.gov Disclaimer + – 100km 60mi Appendix B Geotechnical Information Soil Map—Barnstable County, Massachusetts (Pumping Station 2) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 1 of 34611940461195046119604611970461198046119904612000461201046119404611950461196046119704611980461199046120004612010395800395810395820395830395840395850395860395870395880395890395900 395790 395800 395810 395820 395830 395840 395850 395860 395870 395880 395890 395900 41° 39' 11'' N 70° 15' 5'' W41° 39' 11'' N70° 15' 0'' W41° 39' 8'' N 70° 15' 5'' W41° 39' 8'' N 70° 15' 0'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 19N WGS84 0 25 50 100 150 Feet 0 5 10 20 30 Meters Map Scale: 1:528 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:25,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Barnstable County, Massachusetts Survey Area Data: Version 20, Sep 12, 2023 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 10, 2022—Jun 30, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Soil Map—Barnstable County, Massachusetts (Pumping Station 2) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 2 of 3 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 252B Carver coarse sand, 3 to 8 percent slopes 0.7 100.0% Totals for Area of Interest 0.7 100.0% Soil Map—Barnstable County, Massachusetts Pumping Station 2 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 3 of 3 Hydrologic Soil Group—Barnstable County, Massachusetts (Pumping Station 2) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 1 of 44611940461195046119604611970461198046119904612000461201046119404611950461196046119704611980461199046120004612010395800395810395820395830395840395850395860395870395880395890395900 395790 395800 395810 395820 395830 395840 395850 395860 395870 395880 395890 395900 41° 39' 11'' N 70° 15' 5'' W41° 39' 11'' N70° 15' 0'' W41° 39' 8'' N 70° 15' 5'' W41° 39' 8'' N 70° 15' 0'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 19N WGS84 0 25 50 100 150 Feet 0 5 10 20 30 Meters Map Scale: 1:528 if printed on A landscape (11" x 8.5") sheet. Soil Map may not be valid at this scale. MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons A A/D B B/D C C/D D Not rated or not available Soil Rating Lines A A/D B B/D C C/D D Not rated or not available Soil Rating Points A A/D B B/D C C/D D Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:25,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Barnstable County, Massachusetts Survey Area Data: Version 20, Sep 12, 2023 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Jun 10, 2022—Jun 30, 2022 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Hydrologic Soil Group—Barnstable County, Massachusetts (Pumping Station 2) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 2 of 4 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 252B Carver coarse sand, 3 to 8 percent slopes A 0.7 100.0% Totals for Area of Interest 0.7 100.0% Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Hydrologic Soil Group—Barnstable County, Massachusetts Pumping Station 2 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 3 of 4 Tie-break Rule: Higher Hydrologic Soil Group—Barnstable County, Massachusetts Pumping Station 2 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 7/22/2024 Page 4 of 4 A 1125‐77884    Memorandum    To: Michael Guidice, P.E.    From: Michael Cronin     Vivian Chan     Roger Howard, Jr., P.E.    Date: July 5, 2011    Subject: Summary of Geotechnical Exploration Program and Geotechnical  Engineering Recommendations    Yarmouth Pump Stations    Yarmouth, Massachusetts    Introduction  This memorandum summarizes our geotechnical field exploration and laboratory test programs, and  provides geotechnical engineering design recommendations and construction considerations for the  three proposed Pump Stations as part of the Yarmouth Sewerage Works Improvements project in  Yarmouth, Massachusetts.    Elevations noted herein are in feet and referenced to North American Vertical Datum of 1988  (NAVD88).  Existing and Proposed Site Conditions  Existing Conditions  Pump Station 1.  Proposed pump station 1 is located on an open lot at Mill Pond Road and Route  28/Main Street in Yarmouth, Massachusetts. The site is bounded to the north by a dense wooded  area, to the west by Mill Pond, to the east by commercial properties, and to the south by Route  28/Main Street.  The site is relative flat with grade ranging from El. 12.6 to El. 16.  Pump Station 2.  Proposed pump station 2 is located at 316 Main Street in Yarmouth, Massachusetts.  The site is bounded to the north and west by cranberry bogs, to the east by commercial properties,  and to the south by Route 28/Main Street.  The proposed pump station structures are located within  the gravel area adjacent to a private parking lot. The site is relatively flat with grades ranging from El.  9 to El. 11. DRAFT Michael Guidice  July 5, 2011  Page 2  1125‐77884  Pump Station 3.  Proposed pump station 3 is off of Route 28/Main Street between 666 Main Street  and 674 Main Street in Yarmouth, Massachusetts. The site is bounded to the north by Route 28/Main  Street, to the west by commercial properties, and to the east by a parking lot. The site is about couple  hundred feet from a waterway that connects Swan Pond to the ocean. Currently, the site consists of a  grassy lot with a few trees. The site is relatively flat with grades ranging from approximately El. 5.5 to  El. 7.  Proposed Construction  It is our understanding that both the proposed pump stations 1 and 2 will consists of a precast wet  well and an at‐grade single storey structure with plan dimensions of 12 ft by 24 ft. The wet well at  pump station 1 is about 24 ft below existing grade, while the wet well at pump station 2 is about 20 ft  below existing grade.  Proposed pump station 3 will consist of a cast‐in‐place concrete structure with plan dimensions of  approximately 42 feet by 44 feet and base at El. ‐24.5 (about 31 feet below existing grade). It is our  understanding that the site grade immediately around the pump station will be raised to by about 2 ft  to El. 8.5.  The location of each of the pump stations are shown in Figure 1 through Figure 3.  Purpose and Scope  The purpose of this study was to investigate subsurface conditions at the locations of the proposed  pump stations and to provide geotechnical engineering recommendations for foundation design and  construction considerations, as required for the project.  Specifically, the scope of work included the  following:  „ Review existing subsurface information;  „ Advance four (4) test borings to investigate the subsurface conditions and obtain soil samples for  laboratory testing;  „ Install three (3) groundwater monitoring wells to obtain groundwater elevation data;  „ Conduct laboratory tests to assist in soil classification and estimate engineering soil properties;  „ Develop geotechnical engineering recommendations for foundation design and construction; and  „ Prepare this memorandum presenting CDM’s recommendations and data collected as part of the  investigation.  DRAFT Michael Guidice  July 5, 2011  Page 3  1125‐77884  Subsurface Explorations  Subsurface Exploration Program  A subsurface exploration program was conducted to investigate the subsurface conditions at the  proposed Pump Station areas. The drilling program consisted of a total of four (4) test borings, B‐26,  B‐173, B‐174, and B‐186. Test borings were drilled by New Hampshire Boring, Inc. of Brockton,  Massachusetts using truck mounted drill rig. The explorations were completed between February 14  and April 21, 2011.    All test borings were drilled using 4‐inch inside diameter (I.D.) flush mounted casing with drive and  wash drilling techniques. The test borings were drilled to depths ranging from approximately 30 to 53  ft below ground surface (bgs).   Split spoon sampling was typically conducted in soils at five foot intervals in accordance with ASTM  D1586 (using a 2‐inch O.D. sampler, driver 24 inches by blows from a 140‐pound hammer falling freely  for a 30‐inches).  The number of blows required to drive the sampler each 6‐inch increment was  recorded and the Standard Penetration Resistance (N‐value) was determined as the sum of the blows  over the middle 12‐inches of penetration.  A CDM representative visually classified the soil samples  recovered in the field in general accordance with the Burmister classification system for boring B‐173,  B‐174 and B‐186.  Boring B‐26 was logged by the driller. Representative soil samples from each split  spoon were collected and stored in jars for laboratory testing. Test boring log B‐26 prepared by New  Hampshire Boring, Inc. and test boring logs B‐173, B‐174 and B‐186 prepared by CDM, are included in  Appendix A.  The test borings were located in the field by taping and line of sight from existing site features.  The  approximate locations of test borings are shown on Figures 1 thru 3.    Monitoring Well Program  In addition to collecting soil samples, monitoring wells were installed at three (3) test boring locations,  B‐173, B‐174, and B‐186.  The wells were constructed in generally accordance with ASTM D 5092‐04.   Each well was constructed using two‐inch‐inside‐diameter (ID) Schedule 40 PVC riser.  Clean No. 2  silica sand was placed in the annular space surrounding the well screens to approximately two to five  feet above the top of the well screen.  No less than a two‐foot‐thick bentonite seal was placed in the  annular space above the silica sand pack.  Wells were grouted from the top of the bentonite seal to  approximately ground surface.  Two of the monitoring wells, B‐173 and B‐174, were completed with  pad locked riser casings, while the other monitoring well B‐186 were completed with a flush‐mounted  roadbox. Monitoring well installation logs, prepared by CDM, are included in Appendix B. DRAFT Michael Guidice  July 5, 2011  Page 4  1125‐77884  Geotechnical Laboratory Testing  Laboratory tests were performed on selected split‐spoon samples obtained from the borings.   All  geotechnical laboratory tests were performed at the CDM Geotechnical Laboratory in Somerville,  Massachusetts.  Grain size analyses were performed on six (6) soil samples in accordance with ASTM  D422.  A grain size analysis with Hydrometer analysis was performed on one (1) soil sample in  accordance with ASTM D422.  Atterberg limits were performed on two (2) soil sample in accordance  with ASTM D4318.  A summary of laboratory test results is presented in Table 1.  Results of laboratory  testing are included in Appendix C.  Subsurface Conditions  The subsurface conditions encountered at the site typically consisted of topsoil, sand, and silt or clay.     Topsoil  Topsoil was encountered at three (3) of the test boring locations. The topsoil ranged between 2 to 3  inches thick and typically consisted of dark brown, loose to medium dense, fine to coarse SAND with  varying amounts of silt at the test boring locations.   Sand  The sand was encountered at all four (4) of the test boring locations. All the test borings terminated  within the Sand stratum at depths ranging from 30 to 53 ft. The Sand layer typically consisted of loose  to medium dense, tan to gray, fine to coarse and fine to medium SAND, with trace to little silt and  trace to none fine gravel. SPT N‐values in this stratum ranged from 4 blows per foot (bpf) to 28 bpf  with an average of 10 bpf at the test boring locations.  Silt or Clay  Silt or Clay was encountered at two (2) of the test boring locations, B‐174 and B‐186. The Silt or Clay  layer was encountered within the Sand stratum typically at depths of 22 to 35 ft below ground  surface. The Silt or Clay layer, when encountered, ranged approximately between 2 feet and 5 ft in  thickness at the boring locations. The layer typically consisted of soft to very stiff, gray, SILT or Silty  CLAY, with trace fine sand. SPT N‐values in this layer ranged from 4 bpf to 13 bpf with an average of 8  bpf.                                                                                                                                                                                                               A summary of subsurface explorations conducted for this study is presented in Table 2.  Groundwater Levels  Water levels were measured in monitoring wells at test boring locations B‐173, B‐174 and B‐186  following completion of monitoring well development on March 20 and 22, 2011 as well as on June  14, 2011. Groundwater level was also measured at test boring B‐26 during the time of drilling.  DRAFT Michael Guidice  July 5, 2011  Page 5  1125‐77884  The groundwater levels measured in the monitoring wells installed were 4 to 6 feet below ground  surface (El. 0.5 to 2.5) at B‐173, 5.4 to 7.5 feet below ground surface (El. 5.8 to 7.9) at B‐174, and 5.5  to 7 feet below ground surface (El. 2.8 to 4.3) at B‐186.  Groundwater measured at B‐26 is 17 ft below  ground surface (El. ‐3.5) during exploration. Recorded groundwater elevations after the wells were  developed are summarized in Table 3.    Variation in Subsurface Conditions  Interpretation of general subsurface conditions presented herein is based on soil and groundwater  conditions observed at the exploration locations.  However, subsurface conditions may vary between  exploration locations.  If conditions are found to be different than assumed, recommendations  contained in this memorandum should be reevaluated and confirmed in writing.  Groundwater levels are expected to fluctuate with time, season, temperature, climate, activities and  construction in the area, and other factors.  In addition, stabilized groundwater levels can be difficult  to obtain in borings drilled using drive and wash drilling methods due to the presence of drilling fluid  in the borehole.  Water levels measured in the explorations at time of drilling should not necessarily  be considered to represent stabilized groundwater levels. Therefore, actual conditions at the time of  construction may be different from those observed at the time of the explorations.    Geotechnical Design Recommendations  Geotechnical engineering evaluations have been made as they relate to the new pump station  structures for the Yarmouth Pump Station project in Yarmouth, Massachusetts.  In general, these  evaluations have been based on the results of the recent subsurface investigation, laboratory test  results, published correlations with soil properties and the minimum requirements of the 8th Edition  of the Massachusetts State Building Code (the Code).  In addition, recommended design criteria are  based on performance tolerances, such as allowable settlement, as understood to relate to similar  structures.  Foundation Design  General  The proposed structures should be supported on spread footings or mat foundations bearing on  suitable foundation bearing soils.  Suitable soils consist of the medium dense to dense sand, or  structural fill placed after the removal of unsuitable soils.  Unsuitable soils include topsoil, or any  other soft, loose or disturbed soil present at the foundation subgrade level.  Soil subgrades should be  appropriately dewatered and proof rolled with at least four coverage of a vibratory compactor prior  to placement of structural fill or concrete foundations.  Where the structure is founded on structural fill, the fill should extend at least 2.0 ft beyond the edge  of the foundation, then outward and downward at a slope of one horizontal to one vertical (1H:1V) to  suitable bearing soils. DRAFT Michael Guidice  July 5, 2011  Page 6  1125‐77884  Pump Station 3  The proposed Pump Station 3 structure should be supported on mat foundations bearing on suitable  foundation bearing soils.  Foundations for the proposed structure may be designed for a maximum  gross allowable bearing pressure of 3000 pound per sq. ft. (psf), with total settlement of 1.5 inches  and differential settlement of ¾ inch, provided they bear on the suitable bearing soils, or on structural  fill placed directly over suitable soils.  Pump Station 1 and Pump Station 2  The proposed at‐grade structures for Pump Stations 1 and 2 should be supported on spread footings  bearing on suitable foundation bearing soils.  Footings for the proposed structures may be designed  for a maximum gross allowable bearing pressure of 3000 pound per sq. ft. (psf), provided they bear on  the suitable bearing soils, or on structural fill placed directly over suitable soils. The least lateral  dimension (width) of a foundation should be at least 3.0 ft and at most 8 ft.  The minimum footing  width should be no less than 18 inches.  The proposed precast wet wells for Pump Stations 1 and 2 should be supported on mat foundation  bearing on suitable foundation bearing soils with a maximum gross allowable bearing pressure of  2000 pound per sq. ft. (psf).   Settlement of the proposed at‐grade structures and wet wells designed as recommended herein are  expected to be less than 1 inch with no more than ½ inch of differential settlement.  Lowest Level Floor Slab  For any structures requiring an underdrain system, the lowest level slab may be designed as a mat  bearing on a minimum of 12 inches of compacted crushed stone placed over a non woven filter fabric  (Mirafi 140N or equal).  The crushed stone layer should overlay compacted structural fill placed as  needed and directly over suitable foundation bearing soils.   Foundation Depth  In accordance with Section 1809.5 of the Massachusetts State Building Code, all foundations  supported on soil should bear at least 4.0 ft below any adjacent ground surface exposed to freezing.   Interior footings within heated portions of the structures should bear at least 12 inches below the  respective top of slab elevations.   Earthquake Considerations   For the purpose of determining design earthquake forces for the proposed structures in accordance  with Section 1613.5 of the Code, the site should be considered as Site Class “D”.  Therefore, the  spectral accelerations shall be modified for Site Class D when determining the design earthquake  response accelerations and seismic design category for the seismic analysis at the site. DRAFT Michael Guidice  July 5, 2011  Page 7  1125‐77884  Based on the recent subsurface investigation, the soils encountered beneath the proposed Pump  Station 3 are susceptible to limited liquefaction. Liquefaction induced settlement is estimated to  range from about 0.5 to 2 inches.  Design Groundwater Elevation  In the area near pump station 1, the groundwater level measured in the recently installed monitoring  well was measured at 7.5 feet below existing ground surface (El. 5.8) on April 20, 2011. Based on the  FEMA flood map, the project site is outside the 100‐year flood zone.  For the purpose of design, finish  grade (El. 13) should be used as design groundwater level.  In the area near pump station 2, the groundwater level measured in the recent test boring was  measured at 7 feet below existing ground surface (El. 2.8) on April 20, 2011. Based on the FEMA flood  map, the 100‐year flood in this site is at El. 9.12. For the purpose of design, El. 9.12 should be used as  design groundwater level.  In the area near pump station 3, the groundwater level measured in the recent test boring was  measured at 6 feet below existing ground surface (El. 0.8) on April 22, 2011. Based on the FEMA flood  map, the project site is with the 100‐year flood zone and the 100‐yr flood is at El. 10.12.  For the  purpose of design, El. 10.12 should be used as the design groundwater level.  Perimeter and Underdrainage Considerations  Based on the site groundwater conditions, some of the proposed structures will be below the design  groundwater elevation.  Proposed structures with a finished floor level below the design groundwater  elevation will require either a perimeter and underdrain system, or waterproofing and be designed to  resist hydrostatic uplift pressure (buoyancy).  Resistance to Buoyancy  Any structures that extend below the design ground water level and do not have a permanent  underdrain system should be designed to resist hydrostatic pressures from the design groundwater  level referenced above using the dead weight of the structure plus weight for earth placed directly  over extension to the structure foundations. For purposes of design against uplift, the soil used as  backfill should be assumed to have a total unit weight, in place, of 120 pounds per cubic foot (pcf).    Lateral Pressure on Below‐Grade Walls  Below‐grade walls that are backfilled on one side and restrained against rotation or movement at the  top, should be designed for lateral pressures from soil and groundwater based on an equivalent fluid  unit weight 90 pcf below the design groundwater level and 60 pcf above design groundwater level.    A lateral pressure equals to 0.5 times surface vertical surcharge loads from building foundations, slabs  or other loads should be applied over the full height of all walls.  To eliminate the surcharge loading DRAFT Michael Guidice  July 5, 2011  Page 8  1125‐77884  from adjacent building foundations on walls, the buildings should be separated such that a line  extending at least 2.0 ft beyond the edge of the foundation, then outward and downward at a slope  of 1 horizontal to 1 vertical does not intersect the adjacent structure. Earthquake induced pressures in  accordance with Section 1613 of the Code should be included in the design of all below grade walls.  Resistance to Unbalanced Lateral Loads  Unbalanced lateral loads should be designed to be resisted by friction on the bottom of the  foundation.  For purposes of design, a coefficient of friction of 0.35 should be used.  It is expected that  the available friction will be sufficient to resist all unbalanced lateral loads.  However, should lateral  loads exceed the friction available, the surplus loads may be resisted by passive pressures on the  foundations, provided the walls/beams are appropriately designed for the pressures.  A passive  pressure resistance of up to a maximum equivalent fluid pressure of 200 pcf may be assumed  provided the foundations are backfilled with structural fill compacted to a density of at least 95  percent of the maximum dry density as determined by laboratory test ASTM D1557.  The resistance  from the upper 2 ft of soil should be neglected due to surface effects and potential for disturbance  from frost action and other factors.  Frictional resistance should be assumed to be mobilized first and  to its full capacity before any passive pressure is developed.  Construction Considerations  Excavation  We anticipate that foundation excavations can be made using conventional earthmoving equipment.  Excavation is anticipated to extend up to about 24 ft below the existing ground surface at pump  station 1, 20 feet below the existing ground surface at pump station 2, and 32 feet below the existing  ground surface at pump station 3.   It is anticipated that most of the foundation excavations for the at‐grade structures can be conducted  by open excavation. However, due to the excavation depth, the existing groundwater level and the  high permeability of site soil, excavation support systems will be required for the below grade Pump  Station 3 structure and the wet wells to limit excavation quantities and help control the groundwater.  Any excavation support system should be selected, designed and installed by the contractor.  Specific  recommendations pertaining to excavation support systems are discussed herein.  Undermining of  existing foundations must not occur. Excavation should not extend into the zone of influence of any  existing structures. The zone of influence is defines as a line extending at least 2.0 ft beyond the edge  of the foundation of any existing structure, then outward and downward at a slope of 1 horizontal to  1 vertical. Where open excavations are feasible, the side slopes should be designed and sloped in  accordance with OSHA regulations.    Excavation Support Systems  Due to the depth of Pump Station 3 and the wet wells, most of the excavation may require the use of  excavation support systems.  Selection of the temporary excavation support system should consider DRAFT Michael Guidice  July 5, 2011  Page 9  1125‐77884  the groundwater level and the high permeability of the sand.  It is anticipated most of the temporary  lateral earth support system would require interlocking steel sheeting to help control groundwater.  Excavation support systems that are installed within the zone of influence of structures should be left  in place. Any sheeting or soldier piles left in place should be cut off at least 5 ft below the adjacent  finished grade. Where an excavation support system is within the zone of influence of existing  structures, trench boxes may not be used and monitoring of the adjacent structures as well as the  excavation support system is recommended.    The selection of the type of excavation support system should be performed by the Contractor.  The  Contractor should be required to retain a registered professional engineer in the Commonwealth of  Massachusetts to design the excavation support systems.    Dewatering  Excavations for construction of some of the proposed pump stations are expected to extend below  the existing groundwater level. The Contractor is required to design and implement a dewatering  system that maintains a dry, undisturbed subgrade. To avoid disturbance to the subgrade, the water  elevation should be maintained at least 2 ft below the subgrade level during the entire period of  excavation. The Contractor should predrain the soil prior to excavation below the water level using a  system of sumps, deep wells, and/or well points designed by a professional engineer registered in the  Commonwealth of Massachusetts.     If wet weather is encountered during construction, the Contractor should take care to schedule  excavations to limit the duration of open cuts, slope the bottoms of the excavations to facilitate  drainage and provide berms to limit runoff into the excavations.  In addition, excavated material to be  reused as fill should be stockpiled in such a manner that promotes runoff and limits saturation of the  materials.  Preparation and Protection of Foundation Subgrades  Care should be taken to avoid excess traffic on the excavated subgrades prior to placement of  structural fill, or concrete foundations.  Final excavation should be made using a smooth edged bucket  where possible.  Boulders, which may be exposed at subgrade level, should be removed or split using  a hoe ram or other non‐explosive methods and backfilled using compacted structural fill.  Any  unsuitable material present at the subgrade level should be removed and replaced with compacted  structural fill.  The exposed subgrade should be appropriately dewatered, protected against  precipitation and the subgrade should not be allowed to freeze.  Soil subgrades should be proof rolled with at least four coverage of a vibratory compactor prior to  placement of fill or concrete foundations. DRAFT Michael Guidice  July 5, 2011  Page 10  1125‐77884  Protection of Existing Structures  Settlement Monitoring  We recommend that settlement monitoring points be established on any existing utilities or  structures that are within twice the depth of the excavations for Pump Station 3 and the wet wells.   The points should be installed and baseline elevations taken prior to the start of installation of the  excavation support system. The points should be monitored during installation of any excavation  support system, excavation and backfilling work. The survey of the monitoring points should be  performed daily during excavation and dewatering, and then twice weekly thereafter until all  backfilling is complete.    The Contractor should be prepared to alter the excavation methods if settlement exceeding ¼ inch is  measured at the existing structures.  If settlement exceeding ½ inch is measured at the existing  structures, the Contractor should stop all construction activities, stabilize the excavation, and revise  excavation methods to prevent additional settlement.  Vibration Monitoring  We recommend that vibration monitoring be conducted during the installation of excavations support  system and excavation work using vibratory or impact methods for existing structure located with 100  ft of the work.  The maximum peak particle velocities associated with work by impact or vibratory methods at the  ground surface at existing adjacent structures and utilities should be as follows:      Max. Peak Particle Velocity  Frequency (Hz)         (in. per sec.)  Over 40     2.0  30 to 40    1.5  20 to 30    1.0  Less than 20    0.5     Backfill Materials  Crushed Stone  Crushed stone used below footings, slabs and mat, or as drainage material, should consist of clean,  durable, sharp‐angular fragments of rock of uniform quality free from sand, loam, clay, excess fines  and other deleterious materials and should comply with the requirements of the Massachusetts  Highway Standard Specifications for Highways and Bridges M2.01.4.    DRAFT Michael Guidice  July 5, 2011  Page 11  1125‐77884  Structural Fill  Granular fill used as structural fill below footings, mat foundations and slab‐on‐grade should consist of  a mineral soil free of organic material, loam, debris, frozen soil or other deleterious material which  may be compressible or which cannot be properly compacted.  Structural fill should conform to the  following gradation requirements:  U.S. Standard Sieve Size Percent Passing by Weight  3 inches 100  No. 4 20‐70  No. 40 5‐35  No. 200 0‐10    Structural fill should be placed in layers no thicker than 8 inches, as placed, and compacted with  suitable compaction equipment to at least 95 percent of maximum dry density as determined by  ASTM D1557.  Lift thickness should be reduced to 4 inches in confined areas accessible only to hand  guided compaction equipment.  Common Fill  Common fill used as backfill around structures where passive pressure is not relied on, in parking  areas, and landscaped areas should consist of granular soil free from organic material, debris, frozen  soil, or other deleterious material. It should contain stones no larger than 6 inches and have no more  than 30 percent of material passing the No. 200 sieve.  Common fill should be placed in layers not to exceed 12 inches, as placed, and compacted with  suitable vibratory compaction equipment to at least 92 percent of maximum dry density as  determined by ASTM D1557.  Lift thickness should be reduced to 6 inches in confined areas accessible  only to hand guided compaction equipment.  We anticipate that some of the excavated soils, not including any topsoil, will be suitable for re‐use as  common fill. Care should be taken to separate layers of topsoil encountered during the excavation.  Select Common Fill  Select common fill should consist of same material as common fill, except it should contain no stone  larger than 2 inches. Select common fill should be placed in layers not to exceed 12 inches, as placed,  and compacted with suitable vibratory compaction equipment to at least 95 percent of maximum dry  density as determined by ASTM D1557.  Lift thickness should be reduced to 6 inches in confined areas  accessible only to hand guided compaction equipment. DRAFT Michael Guidice  July 5, 2011  Page 12  1125‐77884  Filter Fabric  Filter fabric used below structures and as specified elsewhere should be non‐woven geotextiles, Mirafi  140N or approved equivalent.  Construction Monitoring  It is recommended that a qualified Geotechnical Engineer or an experienced Resident Engineer be  present during construction to confirm that the Contractor complies with the intent of these  recommendations.  Specifically, the field representative would undertake the following  responsibilities:  „ Confirm removal of unsuitable materials;  „ Monitor the installation of excavation support systems;  „ Confirm that appropriate dewatering and surface water control methods are employed;   „ Confirm that the subgrade conditions encountered are suitable for support of the proposed  structures; and  „ Observe, test and document placement and compaction of backfill material where appropriate.   Samples of imported fill should be submitted to the engineer for approval prior to starting this  work.  In addition, the field representative would be present to identify and provide response should  conditions encountered differ from those assumed during preparation of this report.  Closing  These recommendations have been prepared for the proposed Yarmouth Pump Stations as part of the  Sewerage Works Improvements project in Yarmouth, Massachusetts as understood at this time and  described in this memo. These recommendations have been prepared in accordance with generally  accepted engineering practices.  No other warranty, express or implied, is made.  In the event that  changes in the design or location of the structures occur, the conclusions and recommendations  contained herein should not be considered valid unless verified in writing by CDM.  Attachments:  „ Figure 1 – Boring Location Plan – Pump Station 1  „ Figure 2 – Boring Location Plan – Pump Station 2  „ Figure 3 – Boring Location Plan – Pump Station 3 DRAFT Michael Guidice  July 5, 2011  Page 13  1125‐77884  „ Table 1 – Summary of Geotechnical Laboratory Test Results  „ Table 2 – Summary of Subsurface Exploration Program  „ Table 3 – Summary of Monitoring Wells Groundwater Levels  „ Attachment A – Test Boring Logs  „ Attachment B – Monitoring Well Installation Logs  „ Attachment C – Geotechnical Laboratory Test Results    Reviewed by: Kathy Murtagh, P.E.   DRAFT DRAFT DRAFT DRAFT LL PL PICoarse Fine Coarse Medium Fine Silt ClayB‐26S‐519 to 21 SandSP 0.0 0.2 0.8 51.6 46.6‐‐‐B‐173S‐826 to 28 Sand SP‐SM 0.0 10.8 10.0 61.6 5.3‐‐‐B‐173S‐11 39 to 41 SandSP 0.0 1.1 2.7 24.8 70.4‐‐‐B‐174S‐624 to 26 Silt or Clay ML 0.0 0.0 0.1 0.2 2.6 86.7 10.4 NP NP NPB‐174S‐831 to 33 SandSP 0.0 1.2 1.6 41.6 54.3‐‐‐B‐186S‐519 to 21 SandSP 0.0 5.0 3.4 49.9 40.2‐‐‐B‐186 S‐729 to 31 SandSP 0.0 0.4 0.2 12.8 84.8‐‐‐B‐186S‐834 to 36 Silt or Clay CL‐‐‐‐‐50 24 26  Notes:Abbreviations:1.    USCS classifications were performed in accordance with ASTM D2488.SP Poorly graded Sand2.    Grain size analysis tests were conducted in accordance with ASTM D422.SP‐SM Poorly graded Sand w/ silt3.    Atterberg Limit tests were performed in accordance with ASTM D4318.ML Low plasticity / non‐plastic SiltNP Non‐plastic‐Test not performed0.8Atterberg Limit (3)‐12.31.81.81.01.3Fines (%)Sample No.Grain Size Analysis (2)Exploration No.Sample Depth (ft)StrataUSCS Classification (1)Gravel (%)Sand (%)Town of YarmouthYarmouth Pump StationsYarmouth, MATable 1Summary of Geotechnical Laboratory Test ResultsA16/29/2011DRAFT Topsoil Sand Sandy Silt or ClayB‐2613.530‐>30NE‐3.5B‐1736.553 0.3 >52.7NE0.5B‐17413.351 0.2 >50.85.05.8B‐1869.8480.2(2)>47.82.52.8Notes:1.  Elevations are in feet and are referenced to NAVD88 .2.  Topsoil thickness includes asphalt and gravel base.Abbreviations:NE ‐ Not Encountered>  Indicates strata not fully penetrated3.  Water level for B‐26 was measured from borehole during time of exploration; while water levels for the other explorations where measured in monitoring wells in March 2011.Approximate Ground Surface El.(1)Groundwater El.   (ft.)(3)Exploration No.Exploration Depth (ft.)Strata Thickness (ft)Town of YarmouthYarmouth Pump StationsYarmouth, MassachusettsTable 2Summary of Subsurface ExplorationsA6/29/2011DRAFT Exploration No. LocationApprox. Ground Surface Elevation (ft)Depth to Water (ft)Approx. Groundwater Elevation (ft)DateB‐173 Pump Station 36.560.54/22/201142.56/14/2011B‐174 Pump Station 113.37.55.84/20/20115.47.96/14/2011B‐186 Pump Station 29.872.84/20/20115.54.36/14/2011Note:1.  Elevations are in feet and are referenced to NAVD88 .Town of YarmouthYarmouth Pump StationsYarmouth, MassachusettsTable 3Summary of Monitoring Wells Groundwater LevelsA6/29/2011DRAFT Attachment A    Test Boring Logs    DRAFT 4 5 4 5 4 2 Wet, loose, brown, fine to coarse SAND, trace fine gravel, trace silt Wet, loose, brown, fine to coarse SAND, trace fine gravel, trace silt Wet, medium dense, gray, fine to medium SAND, little silt No recovery Wet, medium dense, brown, fine to coarse SAND, trace fine gravel, trace silt 3"- Topsoil; Dry, loose, tan, fine to coarse SAND, trace silt 5 7 S-3 S-1 Sand4 6 3 8 5 4 7 5 8 4 3 3 4 7 SS SS SS SS SS 24 S-6 S-5 S-4 6 4 16 0 12 SS 24 24 24 24 24 17 AS - Auger/Grab Sample CS - California Sampler BQ - 1.5" Rock Core NQ - 2" Rock Core SampleLength (in)StrataSampleRecovery (in)Blows per6 inchesSampleNumberSampleTypeElev. Depth (ft)Material Description HP - Hydro Punch SS - Split Spoon ST - Shelby Tube WS - Wash Sample GP - Geoprobe and 35-50% some 20-35% little 10-20% trace <10% moisture, density, color Stiff: 8-15 V. Stiff: 15-30 Hard: >30 S-2 Remarks Client: Town of Yarmouth Project Location: Yarmouth, MA 6.5 1.5 -3.5 -8.5 -13.5 0 5 10 15 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Date: 5/24/2011Reviewed by: V. Chan Boring Number: B-173Graphic LogSplit SpoonSize (O.D.)Project Name: Yarmouth Pump Stations Project Number: 1125-77884 Sheet 1 of 3Boring Number: B-173 CAMP DRESSER & McKEE V. Loose: 0-4 Loose: 4-10 M. Dense: 10-30 Abandonment Method: Monitoring Well TimeDateDepth Total Depth (ft.): 53 Drilling Date: Start: 4/22/2011 End: 4/22/2011 Drilling Contractor/Driller: New Hampshire Boring, Inc. / Tyler Lancaster Drilling Method/Casing/Core Barrel Size: Drive and Wash / 4"/ Depth to Initial Water Level (ft): V. Soft: <2 Soft: 2-4 M. Stiff: 4-8 Logged By: M. Cronin 12:004/22/20116 Surface Elevation (ft.): 6.5 Dense: 30-50 V. Dense: >50 Fine Grained (Clay):Granular (Sand): Consistency vs Blowcount/FootSample Types Burmister Classification N: E: Bore Hole Location: See Boring Location Plan Hammer Weight/Drop Height/ Spoon Size: 140 / 30 / 2 DRAFT 6 7 6 7 No recovery 0 6S-6 10 7 4 3 8 8 Wet, very loose to loose, gray, fine to coarse SAND, trace silt, trace fine gravel Wet, loose, gray, fine to medium SAND, trace silt, trace fine gravel Wet, medium dense, brown, fine to coarse SAND, little silt, little fine gravel Wet, medium dense, brown, fine to coarse SAND, little silt, little fine gravel Wet, medium dense, brown, fine to coarse SAND, little silt, little fine gravel 7 S-12 S-11 S-10 S-9 S-8 S-7 SS 24 24 24 24 24 24 SS SS SS SS SS SS 5 24 Material Description Graphic LogSampleLength (in)StrataSampleRecovery (in)Blows per6 inchesSampleNumberElev. Depth (ft)Remarks SampleTypeProject Name: Yarmouth Pump Stations Project Number: 1125-77884 -13.5 -18.5 -23.5 -28.5 -33.5 -38.5 20 25 30 35 40 45 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Boring Number: B-173Split SpoonSize (O.D.)Client: Town of Yarmouth Project Location: Yarmouth, MA Sheet 2 of 3Boring Number: B-173 CAMP DRESSER & McKEE 6 6 5 3 3 7 9 8 11 4 1 3 7 6 7 7 9 Sand4 4 DRAFT 17 2 7 3 14 3 5 Wet, medium dense, gray, fine to medium SAND, little siltSandS-13 14S-14 SS SS 24 Boring terminated at 53 ft bgs. 14 18 Wet, loose, gray, fine to medium SAND, little silt24 Project Name: Yarmouth Pump Stations Project Number: 1125-77884 CAMP DRESSER & McKEE Boring Number: B-173 Graphic LogSampleLength (in)Client: Town of Yarmouth Project Location: Yarmouth, MA Boring Number: B-173 BL YARMOUTH BORING LOGS.GPJ - 7/5/1150 55 60 65 70 -43.5 -48.5 -53.5 -58.5 -63.5 Sheet 3 of 3 Split SpoonSize (O.D.)RemarksMaterial Description Elev. Depth (ft)SampleTypeSampleNumberBlows per6 inchesSampleRecovery (in)StrataDRAFT 4 2 5 7 2"- Topsoil; Moist, medium dense, dark brown, fine to coarse GRAVEL, trace fine to coarse sand, trace silt 4 8 1 4 3 Wet, medium dense, tan, fine to coarse SAND, trace silt Wet, medium dense, tan, fine to coarse SAND, trace silt Wet, loose, tan, fine to coarse SAND, trace silt SandS-1 5 5 7 7 9 8 7 7 7 SS SS SS SS Wet, medium dense, tan, fine to coarse SAND, trace silt24 S-5 S-4 S-3 S-2 12 12 11 SS 1124 24 24 24 7.5 12 Material Description Graphic LogSampleLength (in)StrataSampleRecovery (in)Blows per6 inchesSampleNumberElev. Depth (ft)Remarks AS - Auger/Grab Sample CS - California Sampler BQ - 1.5" Rock Core NQ - 2" Rock Core HP - Hydro Punch SS - Split Spoon ST - Shelby Tube WS - Wash Sample GP - Geoprobe and 35-50% some 20-35% little 10-20% trace <10% moisture, density, colorSampleType13.3 8.3 3.3 -1.7 -6.7 0 5 10 15 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Date: 5/24/2011Reviewed by: V. Chan Split SpoonSize (O.D.)V. Soft: <2 Soft: 2-4 M. Stiff: 4-8 Client: Town of Yarmouth Project Location: Yarmouth, MA Project Name: Yarmouth Pump Stations Project Number: 1125-77884 Sheet 1 of 3Boring Number: B-174 CAMP DRESSER & McKEE Boring Number: B-174 Drilling Date: Start: 4/20/2011 End: 4/20/2011 Hammer Weight/Drop Height/ Spoon Size: 140 / 30 / 2 10:45Bore Hole Location: See Boring Location Plan N: E: TimeDate Total Depth (ft.): 51 Drilling Contractor/Driller: New Hampshire Boring, Inc. / Tyler Lancaster Drilling Method/Casing/Core Barrel Size: Drive and Wash / 4"/ Depth to Initial Water Level (ft): Surface Elevation (ft.): 13.3 Logged By: M. Cronin Abandonment Method: Monitoring Well 4/20/2011 Depth Burmister Classification V. Loose: 0-4 Loose: 4-10 M. Dense: 10-30 Dense: 30-50 V. Dense: >50 Fine Grained (Clay):Granular (Sand): Consistency vs Blowcount/FootSample Types Stiff: 8-15 V. Stiff: 15-30 Hard: >30DRAFT 16 6 Wet, very stiff, gray, SILT, trace fine sand 0 16 0 18 12 13 5 S-5 3 2 7 2 4 Wet, loose, gray, fine to coarse SAND, trace fine gravel, trace silt Wet, loose, gray, fine to coarse SAND, trace silt Wet, medium dense, gray, fine to medium SAND, trace silt, trace fine gravel No Recovery Wet, loose to medium dense, gray, fine to medium SAND, trace silt, trace fine gravel No Recovery 4 S-12 S-11 S-10 S-9 S-8 S-7 S-6 SS 24 24 24 24 24 24 24 SS SS SS SS SS SS SS 24 Blows per6 inchesSampleNumberSampleTypeElev. Depth (ft)Material Description Remarks StrataSampleLength (in)Sheet 2 of 3 -6.7 -11.7 -16.7 -21.7 -26.7 -31.7 20 25 30 35 40 45 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Boring Number: B-174 Client: Town of Yarmouth Project Location: Yarmouth, MA SampleRecovery (in)Boring Number: B-174 CAMP DRESSER & McKEE Split SpoonSize (O.D.)Graphic LogProject Name: Yarmouth Pump Stations Project Number: 1125-77884 6 6 8 4 4 9 5 6 7 7 6 3 4 11 4 4 5 6 7 8 SandSandy Silt or ClaySand5 4 35 DRAFT 3S-13 SandSS 24 3 3 Wet, loose, gray, fine to coarse SAND, trace fine gravel, trace silt Boring terminated at 51 ft bgs. 2 10 CAMP DRESSER & McKEE Boring Number: B-174 Sheet 3 of 3 Client: Town of Yarmouth Project Location: Yarmouth, MA Boring Number: B-174 BL YARMOUTH BORING LOGS.GPJ - 7/5/1150 55 60 65 70 -36.7 -41.7 -46.7 -51.7 -56.7 Project Name: Yarmouth Pump Stations Project Number: 1125-77884 SampleRecovery (in)RemarksMaterial Description Elev. Depth (ft)SampleTypeBlows per6 inchesStrataSampleLength (in)Graphic LogSplit SpoonSize (O.D.)SampleNumberDRAFT 2 2 4 6 2"- Gravel surface course; Dry, medium dense, reddish brown, fine to coarse SAND 3 7 3 3 7 Wet, loose to medium dense, tan, fine to medium SAND, trace fine gravel, trace silt Wet, loose, tan, fine to coarse SAND, little silt Wet, very loose to loose, tan, fine to coarse SAND, trace silt SandS-1 2 4 6 5 5 10 4 2 6 SS SS SS SS Wet, loose to medium dense, tan, fine to coarse SAND, trace silt24 S-5 S-4 S-3 S-2 18 12 12 SS 1624 24 24 24 7 13 Material Description Graphic LogSampleLength (in)StrataSampleRecovery (in)Blows per6 inchesSampleNumberElev. Depth (ft)Remarks AS - Auger/Grab Sample CS - California Sampler BQ - 1.5" Rock Core NQ - 2" Rock Core HP - Hydro Punch SS - Split Spoon ST - Shelby Tube WS - Wash Sample GP - Geoprobe and 35-50% some 20-35% little 10-20% trace <10% moisture, density, colorSampleType9.8 4.8 -0.2 -5.2 -10.2 0 5 10 15 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Date: 5/24/2011Reviewed by: V. Chan Split SpoonSize (O.D.)V. Soft: <2 Soft: 2-4 M. Stiff: 4-8 Client: Town of Yarmouth Project Location: Yarmouth, MA Project Name: Yarmouth Pump Stations Project Number: 1125-77884 Sheet 1 of 3Boring Number: B-186 CAMP DRESSER & McKEE Boring Number: B-186 Drilling Date: Start: 4/20/2011 End: 4/20/2011 Hammer Weight/Drop Height/ Spoon Size: 140 / 30 / 2 3:00Bore Hole Location: See Boring Location Plan N: E: TimeDate Total Depth (ft.): 48 Drilling Contractor/Driller: New Hampshire Boring, Inc. / Tyler Lancaster Drilling Method/Casing/Core Barrel Size: Drive and Wash / 4"/ Depth to Initial Water Level (ft): Surface Elevation (ft.): 9.8 Logged By: M. Cronin Abandonment Method: Monitoring Well 4/20/2011 Depth Burmister Classification V. Loose: 0-4 Loose: 4-10 M. Dense: 10-30 Dense: 30-50 V. Dense: >50 Fine Grained (Clay):Granular (Sand): Consistency vs Blowcount/FootSample Types Stiff: 8-15 V. Stiff: 15-30 Hard: >30DRAFT Wet, loose, tan, fine to medium SAND, little silt S-5 Bottom 6"- Wet, soft to medium stiff, gray, Silty CLAY 12 15 14 16 8 15 18 1 6 6 Wet, loose, gray, fine to medium SAND, trace silt 2 Top 10"- Wet, loose, gray, fine to medium SAND, trace silt 2 Wet, medium dense, brown, fine to coarse SAND, some silt Wet, medium dense, brown, fine to coarse SAND, some silt Wet, loose, tan, fine to coarse SAND, little silt1 SS S-11 S-10 S-9 S-8 S-7 S-6 24 2 24 24 24 24 24 SS SS SS SS SS SS 24 StrataSampleRecovery (in)Blows per6 inchesSampleNumberSampleTypeElev. Depth (ft)Graphic LogRemarks Split SpoonSize (O.D.)Material Description -10.2 -15.2 -20.2 -25.2 -30.2 -35.2 20 25 30 35 40 45 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Boring Number: B-186SampleLength (in)Project Name: Yarmouth Pump Stations Project Number: 1125-77884 Sheet 2 of 3Boring Number: B-186 CAMP DRESSER & McKEE Client: Town of Yarmouth Project Location: Yarmouth, MA 3 7 2 4 3 6 10 Sand2 Sandy Silt or Clay2 6 7 6 4 2 5 11 2 SandDRAFT S-11 RemarksMaterial Description Sand11 9 Boring terminated at 48 ft bgs. 1224SS CAMP DRESSER & McKEE -40.2 -45.2 -50.2 -55.2 -60.2 50 55 60 65 70 BL YARMOUTH BORING LOGS.GPJ - 7/5/11Boring Number: B-186 Client: Town of Yarmouth Project Location: Yarmouth, MA Project Name: Yarmouth Pump Stations Project Number: 1125-77884 Sheet 3 of 3Boring Number: B-186 Split SpoonSize (O.D.)Graphic LogSampleLength (in)StrataSampleRecovery (in)Blows per6 inchesSampleNumberSampleTypeElev. Depth (ft)DRAFT Attachment B  Monitoring Well Installation Logs    DRAFT A 50 Hampshire Street One Cambridge Place Cambridge, MA 02135 (617) 452-6000 Client:B-173 Project Name:5/22/2011 Project Location:M. Cronin Project Number:1 of 1 Top of Casing:3' GROUND Protective Casing SURFACE SURFACE SEAL: BACKFILL MATERIAL: (Type) TOP OF SEAL: SEAL CONSTRUCTION: TOP OF SANDPACK: Top of Seal:6' BGS RISER CONSTRUCTION: Monitoring Well Installation Log Town of Yarmouth Contractor: New Hampshire Boring, Inc. Boring/Well No.: Yarmouth Pump Station Driller:Tyler Lancaster Date Installed: Yarmouth, MA Ground EL:6.5 Logged By: 1125-77884 Riser EL:Page: Concrete (Thickness & Type) Native Fill 6 ft BGS 2 ft - Bentonite Chips (Thickness & Type) 8 ft BGS SCH 40 PVC - 2 in diam. (Type Diameter Material) TOP OF SCREEN: Bottom of Seal: SANDPACK TYPE: Top of Screen:10' BGS SCREEN MATERIAL: BOTTOM OF SCREEN: Bottom of Screen:20' BGS BOTTOM OF BOREHOLE: BOREHOLE DIAMETER: NOTE: All depths are in feet below ground surface, unless noted otherwise. Remarks: Updated On: 04/09/01 8' BGS 53 ft BGS 4" 4 in (Type, Diameter Material) 10 ft BGS #2 Silica Sand 0.01 2" PVC Slot Screen (Type, Slot, Diameter Material) 20 ft BGSDRAFT A 50 Hampshire Street One Cambridge Place Cambridge, MA 02135 (617) 452-6000 Client:B-186 Project Name:5/22/2011 Project Location:M. Cronin Project Number:1 of 1 GROUND Roadway Box SURFACE SURFACE SEAL: BACKFILL MATERIAL: (Type) TOP OF SEAL: SEAL CONSTRUCTION: TOP OF SANDPACK: Top of Seal:6' BGS RISER CONSTRUCTION: Monitoring Well Installation Log Town of Yarmouth Contractor: New Hampshire Boring, Inc. Boring/Well No.: Yarmouth Pump Station Driller:Tyler Lancaster Date Installed: Yarmouth, MA Ground EL:6.5 Logged By: 1125-77884 Riser EL:Page: Concrete (Thickness & Type) Native Fill 6 ft BGS 2 ft - Bentonite Chips (Thickness & Type) 8 ft BGS SCH 40 PVC - 2 in diam. (Type Diameter Material) TOP OF SCREEN: Bottom of Seal: SANDPACK TYPE: Top of Screen:10' BGS SCREEN MATERIAL: BOTTOM OF SCREEN: Bottom of Screen:20' BGS BOTTOM OF BOREHOLE: BOREHOLE DIAMETER: NOTE: All depths are in feet below ground surface, unless noted otherwise. Remarks: Updated On: 04/09/01 (Type, Diameter Material) 48 ft BGS 4" 4 in 10 ft BGS 8' BGS #2 Silica Sand 0.01 2" PVC Slot Screen (Type, Slot, Diameter Material) 20 ft BGSDRAFT A 50 Hampshire Street One Cambridge Place Cambridge, MA 02135 (617) 452-6000 Client:B-174 Project Name:5/22/2011 Project Location:M. Cronin Project Number:1 of 1 Top of Casing:3' GROUND Protective Casing SURFACE SURFACE SEAL: BACKFILL MATERIAL: (Type) TOP OF SEAL: SEAL CONSTRUCTION: TOP OF SANDPACK: Top of Seal:6' BGS RISER CONSTRUCTION: Monitoring Well Installation Log Town of Yarmouth Contractor: New Hampshire Boring, Inc. Boring/Well No.: Yarmouth Pump Station Driller:Tyler Lancaster Date Installed: Yarmouth, MA Ground EL:6.5 Logged By: 1125-77884 Riser EL:Page: Concrete (Thickness & Type) Native Fill 6 ft BGS 2 ft - Bentonite Chips (Thickness & Type) 8 ft BGS SCH 40 PVC - 2 in diam. (Type Diameter Material) TOP OF SCREEN: Bottom of Seal: SANDPACK TYPE: Top of Screen:10' BGS SCREEN MATERIAL: BOTTOM OF SCREEN: Bottom of Screen:20' BGS BOTTOM OF BOREHOLE: BOREHOLE DIAMETER: NOTE: All depths are in feet below ground surface, unless noted otherwise. Remarks: Updated On: 04/09/01 (Type, Diameter Material) 51 ft BGS 4" 4 in 10 ft BGS 8' BGS #2 Silica Sand 0.01 2" PVC Slot Screen (Type, Slot, Diameter Material) 20 ft BGSDRAFT Attachment C  Geotechnical Laboratory Test Results      DRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 2/14/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * poorly graded sand 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 99.8 99.0 88.8 47.4 4.9 0.8 0.9128 0.7805 0.5154 0.4425 0.3122 0.2200 0.1878 2.74 1.01 SP As received moisture content = 18.4% Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-26 Depth: 19-21 Sample Number: S-5 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 0.2 0.8 51.6 46.6 0.86 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 4/22/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * poorly graded sand with silt 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 89.2 79.2 55.1 17.6 12.6 12.3 5.1721 3.1673 0.9454 0.7725 0.5492 0.2849 SP-SM As received moisture content = 3.1% Soil classification and description based on Visual Manual Procedure ASTM D2488 Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-173 Depth: 26-28 Sample Number: S-8 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 10.8 10.0 61.6 5.3 12.36 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 4/22/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * poorly graded sand 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 98.9 96.2 90.3 71.4 10.2 1.0 0.8291 0.6283 0.3464 0.2964 0.2189 0.1678 0.1491 2.32 0.93 SP As received moisture content = 19.7% Soil classification and description based on Visual Manual Procedure ASTM D2488 Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-173 Depth: 39-41 Sample Number: S-11 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 1.1 2.7 24.8 70.4 1.06 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 4/22/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * silt 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 100.0 99.9 99.8 99.7 99.4 97.1 NP NV NP 0.0403 0.0254 0.0140 0.0120 0.0083 0.0059 0.0049 2.86 1.01 ML A-4(0) As received moisture content = 32.4% Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-174 Depth: 24-26 Sample Number: S-6 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 0.0 0.1 0.2 2.6 86.7 10.46 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 4/22/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * poorly graded sand 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 98.8 97.2 83.7 55.6 6.6 1.3 1.1057 0.8916 0.4645 0.3821 0.2639 0.1927 0.1686 2.75 0.89 SP As received moisture content = 19.5% Soil classification and description based on Visual Manual Procedure ASTM D2488 Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-174 Depth: 31-33 Sample Number: S-8 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 1.2 1.6 41.6 54.3 1.36 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT silt NV NP NP 99.7 97.1 ML 1125-77884 Town of Yarmouth MATERIAL DESCRIPTION LL PL PI %<#40 %<#200 USCS Project No.Client:Remarks: Project: CDM Cambridge, Massachusetts Figure Source of Sample: B-174 Depth: 24-26 Sample Number: S-6PLASTICITY INDEX0 10 20 30 40 50 60 LIQUID LIMIT 0 10 20 30 40 50 60 70 80 90 100 110 CL-ML CL or OL CH or O H ML or OL MH or OH Dashed line indicates the approximate upper limit boundary for natural soils 4 7 LIQUID AND PLASTIC LIMITS TEST REPORT As received moisture content=32.4%Phase I-Preliminary Design-Wastewater Treatment PlantDRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 4/22/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * poorly graded sand 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 95.0 91.9 78.0 42.0 7.2 1.8 1.4809 1.0713 0.5887 0.4926 0.3301 0.2155 0.1751 3.36 1.06 SP As received moisture content = 19.3% Soil classification and description based on Visual Manual Procedure ASTM D2488 Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-186 Depth: 19-21 Sample Number: S-5 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 5.0 3.1 49.9 40.2 1.86 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT CDM Cambridge, Massachusetts 4/22/2011 (no specification provided) PL=LL=PI= D90=D85=D60= D50=D30=D15= D10=Cu=Cc= USCS=AASHTO= * poorly graded sand 3 3/4 #4 #10 #20 #40 #100 #200 100.0 100.0 99.6 99.4 98.0 86.6 10.3 1.8 0.4597 0.4122 0.2903 0.2580 0.2032 0.1639 0.1460 1.99 0.97 SP As received moisture content = 22.3% Soil classification and description based on Visual Manual Procedure ASTM D2488 Town of Yarmouth Phase I-Preliminary Design-Wastewater Treatment Plant 1125-77884 Material Description Atterberg Limits Coefficients Classification Remarks Source of Sample: B-186 Depth: 29-31 Sample Number: S-7 Date: Client: Project: Project No:Figure SIEVE PERCENT SPEC. *PASS? SIZE FINER PERCENT (X=NO)PERCENT FINER0 10 20 30 40 50 60 70 80 90 100 GRAIN SIZE - mm. 0.0010.010.1110100 % +3"Coarse % Gravel Fine Coarse Medium % Sand Fine Silt % Fines Clay 0.0 0.0 0.4 0.2 12.8 84.8 1.86 in.3 in.2 in.1½ in.1 in.¾ in.½ in.3/8 in.#4#10#20#30#40#60#100#140#200Particle Size Distribution Report DRAFT Tested By: MR Checked By: AT lean clay 50 24 26 CL 1125-77884 Town of Yarmouth MATERIAL DESCRIPTION LL PL PI %<#40 %<#200 USCS Project No.Client:Remarks: Project: CDM Cambridge, Massachusetts Figure Source of Sample: B-186 Depth: 34-36 Sample Number: S-8BPLASTICITY INDEX0 10 20 30 40 50 60 LIQUID LIMIT 0 10 20 30 40 50 60 70 80 90 100 110 CL-ML CL or OL CH or O H ML or OL MH or OH Dashed line indicates the approximate upper limit boundary for natural soils 4 7 LIQUID AND PLASTIC LIMITS TEST REPORT As received moisture content=34.1%Phase I-Preliminary Design-Wastewater Treatment PlantDRAFT Appendix C HydroCAD Model PS2 ProposedPS2 Existing 1S Existing Pumping Station Area 2S PS West 3S PS South 4S PS East 5S PS North 1R Parking Lot - Existing 2R Parking Lot - Proposed 1P Bioretention Basin Routing Diagram for 2024_07_29 Yarmouth PS2 Prepared by CDM Smith, Printed 7/30/2024 HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 2HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=8,162 sf 38.74% Impervious Runoff Depth=1.83"Subcatchment 1S: Existing Pumping Tc=6.0 min CN=84 Runoff=0.40 cfs 0.029 af Runoff Area=860 sf 18.02% Impervious Runoff Depth=0.07"Subcatchment 2S: PS West Tc=6.0 min CN=45 Runoff=0.00 cfs 0.000 af Runoff Area=2,056 sf 41.59% Impervious Runoff Depth=0.56"Subcatchment 3S: PS South Tc=6.0 min CN=62 Runoff=0.02 cfs 0.002 af Runoff Area=2,000 sf 88.65% Impervious Runoff Depth=2.52"Subcatchment 4S: PS East Tc=6.0 min CN=92 Runoff=0.13 cfs 0.010 af Runoff Area=3,246 sf 23.60% Impervious Runoff Depth=0.34"Subcatchment 5S: PS North Tc=6.0 min CN=56 Runoff=0.01 cfs 0.002 af Inflow=0.40 cfs 0.029 afReach 1R: Parking Lot - Existing Outflow=0.40 cfs 0.029 af Inflow=0.14 cfs 0.012 afReach 2R: Parking Lot - Proposed Outflow=0.14 cfs 0.012 af Peak Elev=10.10' Storage=96 cf Inflow=0.02 cfs 0.002 afPond 1P: Bioretention Basin Outflow=0.00 cfs 0.000 af Total Runoff Area = 0.375 ac Runoff Volume = 0.043 af Average Runoff Depth = 1.37" 58.89% Pervious = 0.221 ac 41.11% Impervious = 0.154 ac Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 3HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Pumping Station Area Runoff = 0.40 cfs @ 12.09 hrs, Volume= 0.029 af, Depth= 1.83" Routed to Reach 1R : Parking Lot - Existing Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2 yr 24 hr Rainfall=3.38" Area (sf) CN Description 1,821 39 >75% Grass cover, Good, HSG A 3,179 96 Gravel surface, HSG A 3,162 98 Paved parking, HSG A 8,162 84 Weighted Average 5,000 61.26% Pervious Area 3,162 38.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 2S: PS West Runoff = 0.00 cfs @ 14.96 hrs, Volume= 0.000 af, Depth= 0.07" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2 yr 24 hr Rainfall=3.38" Area (sf) CN Description 678 32 Woods/grass comb., Good, HSG A 27 76 Gravel roads, HSG A 155 98 Paved parking, HSG A 860 45 Weighted Average 705 81.98% Pervious Area 155 18.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Grass Summary for Subcatchment 3S: PS South Runoff = 0.02 cfs @ 12.11 hrs, Volume= 0.002 af, Depth= 0.56" Routed to Pond 1P : Bioretention Basin Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2 yr 24 hr Rainfall=3.38" Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 4HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Area (sf) CN Description 1,085 32 Woods/grass comb., Good, HSG A 116 76 Gravel roads, HSG A 855 98 Paved parking, HSG A 2,056 62 Weighted Average 1,201 58.41% Pervious Area 855 41.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement/grass Summary for Subcatchment 4S: PS East Runoff = 0.13 cfs @ 12.09 hrs, Volume= 0.010 af, Depth= 2.52" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2 yr 24 hr Rainfall=3.38" Area (sf) CN Description 177 32 Woods/grass comb., Good, HSG A 50 76 Gravel roads, HSG A 1,773 98 Paved parking, HSG A 2,000 92 Weighted Average 227 11.35% Pervious Area 1,773 88.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 5S: PS North Runoff = 0.01 cfs @ 12.16 hrs, Volume= 0.002 af, Depth= 0.34" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 2 yr 24 hr Rainfall=3.38" Area (sf) CN Description 1,891 32 Woods/grass comb., Good, HSG A 589 76 Gravel roads, HSG A 766 98 Roofs, HSG A 3,246 56 Weighted Average 2,480 76.40% Pervious Area 766 23.60% Impervious Area Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 5HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Gravel/grass Summary for Reach 1R: Parking Lot - Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 38.74% Impervious, Inflow Depth = 1.83" for 2 yr 24 hr event Inflow = 0.40 cfs @ 12.09 hrs, Volume= 0.029 af Outflow = 0.40 cfs @ 12.09 hrs, Volume= 0.029 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Reach 2R: Parking Lot - Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 43.48% Impervious, Inflow Depth = 0.76" for 2 yr 24 hr event Inflow = 0.14 cfs @ 12.09 hrs, Volume= 0.012 af Outflow = 0.14 cfs @ 12.09 hrs, Volume= 0.012 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Pond 1P: Bioretention Basin Inflow Area = 0.047 ac, 41.59% Impervious, Inflow Depth = 0.56" for 2 yr 24 hr event Inflow = 0.02 cfs @ 12.11 hrs, Volume= 0.002 af Outflow = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af, Atten= 100%, Lag= 0.0 min Primary = 0.00 cfs @ 0.00 hrs, Volume= 0.000 af Routed to Reach 2R : Parking Lot - Proposed Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 10.10' @ 24.36 hrs Surf.Area= 144 sf Storage= 96 cf Flood Elev= 11.00' Surf.Area= 320 sf Storage= 306 cf Plug-Flow detention time= (not calculated: initial storage exceeds outflow) Center-of-Mass det. time= (not calculated: no outflow) Volume Invert Avail.Storage Storage Description #1 9.00' 306 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 9.00 41 0 0 10.00 125 83 83 11.00 320 223 306 Device Routing Invert Outlet Devices #1 Primary 10.50'5.0' long + 3.0 '/' SideZ x 5.5' breadth Broad-Crested Rectangular Weir Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 6HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.35 2.51 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.69 2.73 2.77 2.86 Primary OutFlow Max=0.00 cfs @ 0.00 hrs HW=9.00' (Free Discharge) 1=Broad-Crested Rectangular Weir ( Controls 0.00 cfs) Type III 24-hr 10 yr 24 hr Rainfall=4.92"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 7HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=8,162 sf 38.74% Impervious Runoff Depth=3.20"Subcatchment 1S: Existing Pumping Tc=6.0 min CN=84 Runoff=0.70 cfs 0.050 af Runoff Area=860 sf 18.02% Impervious Runoff Depth=0.42"Subcatchment 2S: PS West Tc=6.0 min CN=45 Runoff=0.00 cfs 0.001 af Runoff Area=2,056 sf 41.59% Impervious Runoff Depth=1.39"Subcatchment 3S: PS South Tc=6.0 min CN=62 Runoff=0.07 cfs 0.005 af Runoff Area=2,000 sf 88.65% Impervious Runoff Depth=4.01"Subcatchment 4S: PS East Tc=6.0 min CN=92 Runoff=0.20 cfs 0.015 af Runoff Area=3,246 sf 23.60% Impervious Runoff Depth=1.00"Subcatchment 5S: PS North Tc=6.0 min CN=56 Runoff=0.07 cfs 0.006 af Inflow=0.70 cfs 0.050 afReach 1R: Parking Lot - Existing Outflow=0.70 cfs 0.050 af Inflow=0.28 cfs 0.024 afReach 2R: Parking Lot - Proposed Outflow=0.28 cfs 0.024 af Peak Elev=10.50' Storage=170 cf Inflow=0.07 cfs 0.005 afPond 1P: Bioretention Basin Outflow=0.00 cfs 0.002 af Total Runoff Area = 0.375 ac Runoff Volume = 0.078 af Average Runoff Depth = 2.49" 58.89% Pervious = 0.221 ac 41.11% Impervious = 0.154 ac Type III 24-hr 10 yr 24 hr Rainfall=4.92"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 8HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Pumping Station Area Runoff = 0.70 cfs @ 12.09 hrs, Volume= 0.050 af, Depth= 3.20" Routed to Reach 1R : Parking Lot - Existing Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10 yr 24 hr Rainfall=4.92" Area (sf) CN Description 1,821 39 >75% Grass cover, Good, HSG A 3,179 96 Gravel surface, HSG A 3,162 98 Paved parking, HSG A 8,162 84 Weighted Average 5,000 61.26% Pervious Area 3,162 38.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 2S: PS West Runoff = 0.00 cfs @ 12.32 hrs, Volume= 0.001 af, Depth= 0.42" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10 yr 24 hr Rainfall=4.92" Area (sf) CN Description 678 32 Woods/grass comb., Good, HSG A 27 76 Gravel roads, HSG A 155 98 Paved parking, HSG A 860 45 Weighted Average 705 81.98% Pervious Area 155 18.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Grass Summary for Subcatchment 3S: PS South Runoff = 0.07 cfs @ 12.10 hrs, Volume= 0.005 af, Depth= 1.39" Routed to Pond 1P : Bioretention Basin Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10 yr 24 hr Rainfall=4.92" Type III 24-hr 10 yr 24 hr Rainfall=4.92"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 9HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Area (sf) CN Description 1,085 32 Woods/grass comb., Good, HSG A 116 76 Gravel roads, HSG A 855 98 Paved parking, HSG A 2,056 62 Weighted Average 1,201 58.41% Pervious Area 855 41.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement/grass Summary for Subcatchment 4S: PS East Runoff = 0.20 cfs @ 12.08 hrs, Volume= 0.015 af, Depth= 4.01" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10 yr 24 hr Rainfall=4.92" Area (sf) CN Description 177 32 Woods/grass comb., Good, HSG A 50 76 Gravel roads, HSG A 1,773 98 Paved parking, HSG A 2,000 92 Weighted Average 227 11.35% Pervious Area 1,773 88.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 5S: PS North Runoff = 0.07 cfs @ 12.11 hrs, Volume= 0.006 af, Depth= 1.00" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 10 yr 24 hr Rainfall=4.92" Area (sf) CN Description 1,891 32 Woods/grass comb., Good, HSG A 589 76 Gravel roads, HSG A 766 98 Roofs, HSG A 3,246 56 Weighted Average 2,480 76.40% Pervious Area 766 23.60% Impervious Area Type III 24-hr 10 yr 24 hr Rainfall=4.92"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 10HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Gravel/grass Summary for Reach 1R: Parking Lot - Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 38.74% Impervious, Inflow Depth = 3.20" for 10 yr 24 hr event Inflow = 0.70 cfs @ 12.09 hrs, Volume= 0.050 af Outflow = 0.70 cfs @ 12.09 hrs, Volume= 0.050 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Reach 2R: Parking Lot - Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 43.48% Impervious, Inflow Depth = 1.52" for 10 yr 24 hr event Inflow = 0.28 cfs @ 12.09 hrs, Volume= 0.024 af Outflow = 0.28 cfs @ 12.09 hrs, Volume= 0.024 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Pond 1P: Bioretention Basin Inflow Area = 0.047 ac, 41.59% Impervious, Inflow Depth = 1.39" for 10 yr 24 hr event Inflow = 0.07 cfs @ 12.10 hrs, Volume= 0.005 af Outflow = 0.00 cfs @ 15.44 hrs, Volume= 0.002 af, Atten= 94%, Lag= 200.7 min Primary = 0.00 cfs @ 15.44 hrs, Volume= 0.002 af Routed to Reach 2R : Parking Lot - Proposed Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 10.50' @ 15.44 hrs Surf.Area= 223 sf Storage= 170 cf Flood Elev= 11.00' Surf.Area= 320 sf Storage= 306 cf Plug-Flow detention time= 407.4 min calculated for 0.002 af (29% of inflow) Center-of-Mass det. time= 259.7 min ( 1,130.2 - 870.5 ) Volume Invert Avail.Storage Storage Description #1 9.00' 306 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 9.00 41 0 0 10.00 125 83 83 11.00 320 223 306 Device Routing Invert Outlet Devices #1 Primary 10.50'5.0' long + 3.0 '/' SideZ x 5.5' breadth Broad-Crested Rectangular Weir Type III 24-hr 10 yr 24 hr Rainfall=4.92"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 11HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.35 2.51 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.69 2.73 2.77 2.86 Primary OutFlow Max=0.00 cfs @ 15.44 hrs HW=10.50' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.00 cfs @ 0.12 fps) Type III 24-hr 25 yr 24 hr Rainfall=5.88"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 12HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=8,162 sf 38.74% Impervious Runoff Depth=4.08"Subcatchment 1S: Existing Pumping Tc=6.0 min CN=84 Runoff=0.88 cfs 0.064 af Runoff Area=860 sf 18.02% Impervious Runoff Depth=0.75"Subcatchment 2S: PS West Tc=6.0 min CN=45 Runoff=0.01 cfs 0.001 af Runoff Area=2,056 sf 41.59% Impervious Runoff Depth=2.01"Subcatchment 3S: PS South Tc=6.0 min CN=62 Runoff=0.11 cfs 0.008 af Runoff Area=2,000 sf 88.65% Impervious Runoff Depth=4.95"Subcatchment 4S: PS East Tc=6.0 min CN=92 Runoff=0.25 cfs 0.019 af Runoff Area=3,246 sf 23.60% Impervious Runoff Depth=1.53"Subcatchment 5S: PS North Tc=6.0 min CN=56 Runoff=0.12 cfs 0.009 af Inflow=0.88 cfs 0.064 afReach 1R: Parking Lot - Existing Outflow=0.88 cfs 0.064 af Inflow=0.38 cfs 0.034 afReach 2R: Parking Lot - Proposed Outflow=0.38 cfs 0.034 af Peak Elev=10.51' Storage=172 cf Inflow=0.11 cfs 0.008 afPond 1P: Bioretention Basin Outflow=0.01 cfs 0.004 af Total Runoff Area = 0.375 ac Runoff Volume = 0.101 af Average Runoff Depth = 3.24" 58.89% Pervious = 0.221 ac 41.11% Impervious = 0.154 ac Type III 24-hr 25 yr 24 hr Rainfall=5.88"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 13HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Pumping Station Area Runoff = 0.88 cfs @ 12.09 hrs, Volume= 0.064 af, Depth= 4.08" Routed to Reach 1R : Parking Lot - Existing Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25 yr 24 hr Rainfall=5.88" Area (sf) CN Description 1,821 39 >75% Grass cover, Good, HSG A 3,179 96 Gravel surface, HSG A 3,162 98 Paved parking, HSG A 8,162 84 Weighted Average 5,000 61.26% Pervious Area 3,162 38.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 2S: PS West Runoff = 0.01 cfs @ 12.13 hrs, Volume= 0.001 af, Depth= 0.75" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25 yr 24 hr Rainfall=5.88" Area (sf) CN Description 678 32 Woods/grass comb., Good, HSG A 27 76 Gravel roads, HSG A 155 98 Paved parking, HSG A 860 45 Weighted Average 705 81.98% Pervious Area 155 18.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Grass Summary for Subcatchment 3S: PS South Runoff = 0.11 cfs @ 12.10 hrs, Volume= 0.008 af, Depth= 2.01" Routed to Pond 1P : Bioretention Basin Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25 yr 24 hr Rainfall=5.88" Type III 24-hr 25 yr 24 hr Rainfall=5.88"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 14HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Area (sf) CN Description 1,085 32 Woods/grass comb., Good, HSG A 116 76 Gravel roads, HSG A 855 98 Paved parking, HSG A 2,056 62 Weighted Average 1,201 58.41% Pervious Area 855 41.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement/grass Summary for Subcatchment 4S: PS East Runoff = 0.25 cfs @ 12.08 hrs, Volume= 0.019 af, Depth= 4.95" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25 yr 24 hr Rainfall=5.88" Area (sf) CN Description 177 32 Woods/grass comb., Good, HSG A 50 76 Gravel roads, HSG A 1,773 98 Paved parking, HSG A 2,000 92 Weighted Average 227 11.35% Pervious Area 1,773 88.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 5S: PS North Runoff = 0.12 cfs @ 12.10 hrs, Volume= 0.009 af, Depth= 1.53" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 25 yr 24 hr Rainfall=5.88" Area (sf) CN Description 1,891 32 Woods/grass comb., Good, HSG A 589 76 Gravel roads, HSG A 766 98 Roofs, HSG A 3,246 56 Weighted Average 2,480 76.40% Pervious Area 766 23.60% Impervious Area Type III 24-hr 25 yr 24 hr Rainfall=5.88"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 15HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Gravel/grass Summary for Reach 1R: Parking Lot - Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 38.74% Impervious, Inflow Depth = 4.08" for 25 yr 24 hr event Inflow = 0.88 cfs @ 12.09 hrs, Volume= 0.064 af Outflow = 0.88 cfs @ 12.09 hrs, Volume= 0.064 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Reach 2R: Parking Lot - Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 43.48% Impervious, Inflow Depth = 2.16" for 25 yr 24 hr event Inflow = 0.38 cfs @ 12.09 hrs, Volume= 0.034 af Outflow = 0.38 cfs @ 12.09 hrs, Volume= 0.034 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Pond 1P: Bioretention Basin Inflow Area = 0.047 ac, 41.59% Impervious, Inflow Depth = 2.01" for 25 yr 24 hr event Inflow = 0.11 cfs @ 12.10 hrs, Volume= 0.008 af Outflow = 0.01 cfs @ 12.89 hrs, Volume= 0.004 af, Atten= 86%, Lag= 47.6 min Primary = 0.01 cfs @ 12.89 hrs, Volume= 0.004 af Routed to Reach 2R : Parking Lot - Proposed Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 10.51' @ 12.89 hrs Surf.Area= 224 sf Storage= 172 cf Flood Elev= 11.00' Surf.Area= 320 sf Storage= 306 cf Plug-Flow detention time= 257.6 min calculated for 0.004 af (51% of inflow) Center-of-Mass det. time= 128.8 min ( 987.7 - 858.9 ) Volume Invert Avail.Storage Storage Description #1 9.00' 306 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 9.00 41 0 0 10.00 125 83 83 11.00 320 223 306 Device Routing Invert Outlet Devices #1 Primary 10.50'5.0' long + 3.0 '/' SideZ x 5.5' breadth Broad-Crested Rectangular Weir Type III 24-hr 25 yr 24 hr Rainfall=5.88"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 16HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.35 2.51 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.69 2.73 2.77 2.86 Primary OutFlow Max=0.01 cfs @ 12.89 hrs HW=10.51' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.01 cfs @ 0.22 fps) Type III 24-hr 50 yr 24 hr Rainfall=6.62"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 17HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=8,162 sf 38.74% Impervious Runoff Depth=4.78"Subcatchment 1S: Existing Pumping Tc=6.0 min CN=84 Runoff=1.03 cfs 0.075 af Runoff Area=860 sf 18.02% Impervious Runoff Depth=1.06"Subcatchment 2S: PS West Tc=6.0 min CN=45 Runoff=0.02 cfs 0.002 af Runoff Area=2,056 sf 41.59% Impervious Runoff Depth=2.53"Subcatchment 3S: PS South Tc=6.0 min CN=62 Runoff=0.14 cfs 0.010 af Runoff Area=2,000 sf 88.65% Impervious Runoff Depth=5.68"Subcatchment 4S: PS East Tc=6.0 min CN=92 Runoff=0.28 cfs 0.022 af Runoff Area=3,246 sf 23.60% Impervious Runoff Depth=1.97"Subcatchment 5S: PS North Tc=6.0 min CN=56 Runoff=0.16 cfs 0.012 af Inflow=1.03 cfs 0.075 afReach 1R: Parking Lot - Existing Outflow=1.03 cfs 0.075 af Inflow=0.46 cfs 0.042 afReach 2R: Parking Lot - Proposed Outflow=0.46 cfs 0.042 af Peak Elev=10.53' Storage=176 cf Inflow=0.14 cfs 0.010 afPond 1P: Bioretention Basin Outflow=0.05 cfs 0.006 af Total Runoff Area = 0.375 ac Runoff Volume = 0.120 af Average Runoff Depth = 3.85" 58.89% Pervious = 0.221 ac 41.11% Impervious = 0.154 ac Type III 24-hr 50 yr 24 hr Rainfall=6.62"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 18HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Pumping Station Area Runoff = 1.03 cfs @ 12.09 hrs, Volume= 0.075 af, Depth= 4.78" Routed to Reach 1R : Parking Lot - Existing Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 50 yr 24 hr Rainfall=6.62" Area (sf) CN Description 1,821 39 >75% Grass cover, Good, HSG A 3,179 96 Gravel surface, HSG A 3,162 98 Paved parking, HSG A 8,162 84 Weighted Average 5,000 61.26% Pervious Area 3,162 38.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 2S: PS West Runoff = 0.02 cfs @ 12.12 hrs, Volume= 0.002 af, Depth= 1.06" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 50 yr 24 hr Rainfall=6.62" Area (sf) CN Description 678 32 Woods/grass comb., Good, HSG A 27 76 Gravel roads, HSG A 155 98 Paved parking, HSG A 860 45 Weighted Average 705 81.98% Pervious Area 155 18.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Grass Summary for Subcatchment 3S: PS South Runoff = 0.14 cfs @ 12.09 hrs, Volume= 0.010 af, Depth= 2.53" Routed to Pond 1P : Bioretention Basin Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 50 yr 24 hr Rainfall=6.62" Type III 24-hr 50 yr 24 hr Rainfall=6.62"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 19HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Area (sf) CN Description 1,085 32 Woods/grass comb., Good, HSG A 116 76 Gravel roads, HSG A 855 98 Paved parking, HSG A 2,056 62 Weighted Average 1,201 58.41% Pervious Area 855 41.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement/grass Summary for Subcatchment 4S: PS East Runoff = 0.28 cfs @ 12.08 hrs, Volume= 0.022 af, Depth= 5.68" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 50 yr 24 hr Rainfall=6.62" Area (sf) CN Description 177 32 Woods/grass comb., Good, HSG A 50 76 Gravel roads, HSG A 1,773 98 Paved parking, HSG A 2,000 92 Weighted Average 227 11.35% Pervious Area 1,773 88.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 5S: PS North Runoff = 0.16 cfs @ 12.10 hrs, Volume= 0.012 af, Depth= 1.97" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 50 yr 24 hr Rainfall=6.62" Area (sf) CN Description 1,891 32 Woods/grass comb., Good, HSG A 589 76 Gravel roads, HSG A 766 98 Roofs, HSG A 3,246 56 Weighted Average 2,480 76.40% Pervious Area 766 23.60% Impervious Area Type III 24-hr 50 yr 24 hr Rainfall=6.62"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 20HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Gravel/grass Summary for Reach 1R: Parking Lot - Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 38.74% Impervious, Inflow Depth = 4.78" for 50 yr 24 hr event Inflow = 1.03 cfs @ 12.09 hrs, Volume= 0.075 af Outflow = 1.03 cfs @ 12.09 hrs, Volume= 0.075 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Reach 2R: Parking Lot - Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 43.48% Impervious, Inflow Depth = 2.68" for 50 yr 24 hr event Inflow = 0.46 cfs @ 12.09 hrs, Volume= 0.042 af Outflow = 0.46 cfs @ 12.09 hrs, Volume= 0.042 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Pond 1P: Bioretention Basin Inflow Area = 0.047 ac, 41.59% Impervious, Inflow Depth = 2.53" for 50 yr 24 hr event Inflow = 0.14 cfs @ 12.09 hrs, Volume= 0.010 af Outflow = 0.05 cfs @ 12.41 hrs, Volume= 0.006 af, Atten= 63%, Lag= 18.9 min Primary = 0.05 cfs @ 12.41 hrs, Volume= 0.006 af Routed to Reach 2R : Parking Lot - Proposed Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 10.53' @ 12.41 hrs Surf.Area= 227 sf Storage= 176 cf Flood Elev= 11.00' Surf.Area= 320 sf Storage= 306 cf Plug-Flow detention time= 203.4 min calculated for 0.006 af (61% of inflow) Center-of-Mass det. time= 87.6 min ( 939.5 - 851.9 ) Volume Invert Avail.Storage Storage Description #1 9.00' 306 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 9.00 41 0 0 10.00 125 83 83 11.00 320 223 306 Device Routing Invert Outlet Devices #1 Primary 10.50'5.0' long + 3.0 '/' SideZ x 5.5' breadth Broad-Crested Rectangular Weir Type III 24-hr 50 yr 24 hr Rainfall=6.62"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 21HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.35 2.51 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.69 2.73 2.77 2.86 Primary OutFlow Max=0.05 cfs @ 12.41 hrs HW=10.53' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.05 cfs @ 0.37 fps) Type III 24-hr 100 yr 24 hr Rainfall=7.37"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 22HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Runoff Area=8,162 sf 38.74% Impervious Runoff Depth=5.49"Subcatchment 1S: Existing Pumping Tc=6.0 min CN=84 Runoff=1.17 cfs 0.086 af Runoff Area=860 sf 18.02% Impervious Runoff Depth=1.41"Subcatchment 2S: PS West Tc=6.0 min CN=45 Runoff=0.03 cfs 0.002 af Runoff Area=2,056 sf 41.59% Impervious Runoff Depth=3.08"Subcatchment 3S: PS South Tc=6.0 min CN=62 Runoff=0.17 cfs 0.012 af Runoff Area=2,000 sf 88.65% Impervious Runoff Depth=6.42"Subcatchment 4S: PS East Tc=6.0 min CN=92 Runoff=0.32 cfs 0.025 af Runoff Area=3,246 sf 23.60% Impervious Runoff Depth=2.46"Subcatchment 5S: PS North Tc=6.0 min CN=56 Runoff=0.20 cfs 0.015 af Inflow=1.17 cfs 0.086 afReach 1R: Parking Lot - Existing Outflow=1.17 cfs 0.086 af Inflow=0.55 cfs 0.050 afReach 2R: Parking Lot - Proposed Outflow=0.55 cfs 0.050 af Peak Elev=10.54' Storage=179 cf Inflow=0.17 cfs 0.012 afPond 1P: Bioretention Basin Outflow=0.09 cfs 0.008 af Total Runoff Area = 0.375 ac Runoff Volume = 0.140 af Average Runoff Depth = 4.48" 58.89% Pervious = 0.221 ac 41.11% Impervious = 0.154 ac Type III 24-hr 100 yr 24 hr Rainfall=7.37"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 23HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Summary for Subcatchment 1S: Existing Pumping Station Area Runoff = 1.17 cfs @ 12.09 hrs, Volume= 0.086 af, Depth= 5.49" Routed to Reach 1R : Parking Lot - Existing Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100 yr 24 hr Rainfall=7.37" Area (sf) CN Description 1,821 39 >75% Grass cover, Good, HSG A 3,179 96 Gravel surface, HSG A 3,162 98 Paved parking, HSG A 8,162 84 Weighted Average 5,000 61.26% Pervious Area 3,162 38.74% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 2S: PS West Runoff = 0.03 cfs @ 12.11 hrs, Volume= 0.002 af, Depth= 1.41" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100 yr 24 hr Rainfall=7.37" Area (sf) CN Description 678 32 Woods/grass comb., Good, HSG A 27 76 Gravel roads, HSG A 155 98 Paved parking, HSG A 860 45 Weighted Average 705 81.98% Pervious Area 155 18.02% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Grass Summary for Subcatchment 3S: PS South Runoff = 0.17 cfs @ 12.09 hrs, Volume= 0.012 af, Depth= 3.08" Routed to Pond 1P : Bioretention Basin Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100 yr 24 hr Rainfall=7.37" Type III 24-hr 100 yr 24 hr Rainfall=7.37"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 24HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Area (sf) CN Description 1,085 32 Woods/grass comb., Good, HSG A 116 76 Gravel roads, HSG A 855 98 Paved parking, HSG A 2,056 62 Weighted Average 1,201 58.41% Pervious Area 855 41.59% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement/grass Summary for Subcatchment 4S: PS East Runoff = 0.32 cfs @ 12.08 hrs, Volume= 0.025 af, Depth= 6.42" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100 yr 24 hr Rainfall=7.37" Area (sf) CN Description 177 32 Woods/grass comb., Good, HSG A 50 76 Gravel roads, HSG A 1,773 98 Paved parking, HSG A 2,000 92 Weighted Average 227 11.35% Pervious Area 1,773 88.65% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Pavement Summary for Subcatchment 5S: PS North Runoff = 0.20 cfs @ 12.10 hrs, Volume= 0.015 af, Depth= 2.46" Routed to Reach 2R : Parking Lot - Proposed Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Type III 24-hr 100 yr 24 hr Rainfall=7.37" Area (sf) CN Description 1,891 32 Woods/grass comb., Good, HSG A 589 76 Gravel roads, HSG A 766 98 Roofs, HSG A 3,246 56 Weighted Average 2,480 76.40% Pervious Area 766 23.60% Impervious Area Type III 24-hr 100 yr 24 hr Rainfall=7.37"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 25HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 6.0 Direct Entry, Gravel/grass Summary for Reach 1R: Parking Lot - Existing [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 38.74% Impervious, Inflow Depth = 5.49" for 100 yr 24 hr event Inflow = 1.17 cfs @ 12.09 hrs, Volume= 0.086 af Outflow = 1.17 cfs @ 12.09 hrs, Volume= 0.086 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Reach 2R: Parking Lot - Proposed [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 0.187 ac, 43.48% Impervious, Inflow Depth = 3.23" for 100 yr 24 hr event Inflow = 0.55 cfs @ 12.09 hrs, Volume= 0.050 af Outflow = 0.55 cfs @ 12.09 hrs, Volume= 0.050 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind+Trans method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Summary for Pond 1P: Bioretention Basin Inflow Area = 0.047 ac, 41.59% Impervious, Inflow Depth = 3.08" for 100 yr 24 hr event Inflow = 0.17 cfs @ 12.09 hrs, Volume= 0.012 af Outflow = 0.09 cfs @ 12.25 hrs, Volume= 0.008 af, Atten= 46%, Lag= 9.4 min Primary = 0.09 cfs @ 12.25 hrs, Volume= 0.008 af Routed to Reach 2R : Parking Lot - Proposed Routing by Stor-Ind method, Time Span= 0.00-72.00 hrs, dt= 0.02 hrs Peak Elev= 10.54' @ 12.25 hrs Surf.Area= 230 sf Storage= 179 cf Flood Elev= 11.00' Surf.Area= 320 sf Storage= 306 cf Plug-Flow detention time= 170.1 min calculated for 0.008 af (68% of inflow) Center-of-Mass det. time= 65.5 min ( 911.5 - 846.0 ) Volume Invert Avail.Storage Storage Description #1 9.00' 306 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 9.00 41 0 0 10.00 125 83 83 11.00 320 223 306 Device Routing Invert Outlet Devices #1 Primary 10.50'5.0' long + 3.0 '/' SideZ x 5.5' breadth Broad-Crested Rectangular Weir Type III 24-hr 100 yr 24 hr Rainfall=7.37"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 26HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Head (feet) 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 Coef. (English) 2.35 2.51 2.70 2.68 2.68 2.66 2.65 2.65 2.65 2.65 2.67 2.66 2.68 2.69 2.73 2.77 2.86 Primary OutFlow Max=0.09 cfs @ 12.25 hrs HW=10.54' (Free Discharge) 1=Broad-Crested Rectangular Weir (Weir Controls 0.09 cfs @ 0.45 fps) Appendix D Recharge Volume and Water Quality Volume Calculations Pumping Station 2 WQv and Rv Calculations Water Quality Volume - Overall Recharge Volume - Overall Impervious Area: 1,683 sf Impervious Area: 1,683 sf WQV Target: 1.0 in Rv Target: 0.60 in WQv Required:140 cf Rv Required:84 cf WQv Required:0.003 af Rv Required:0.002 af Water Quality Volume - Gravel Stone Surfacing Recharge Volume - Gravel Stone Surfacing Impervious Area: 450 sf Impervious Area: 450 sf WQV Target: 1.0 in Rv Target: 0.60 in WQv Required:38 cf Rv Required:23 cf WQv Required:0.001 af Rv Required:0.001 af Volume Provided:Volume Provided: Gravel Area: 589 sf Gravel Area: 589 sf Depth of Gravel 0.33 ft Depth of Gravel 0.33 ft Void Ratio 0.30 Void Ratio 0.30 Total Provided:59 cf Total Provided:59 cf Water Quality Volume - Bioretention Area Recharge Volume - Bioretention Area Impervious Area: 803 sf Impervious Area: 803 sf WQV Target: 1.0 in Rv Target: 0.60 in WQv Required:67 cf Rv Required:40 cf WQv Required:0.002 af Rv Required:0.001 af Total Volume Provided:170 cf Total Volume Provided:170 cf Sediment Forebay - Bioretention Area Drawdown Time - Bioretention Area Impervious Area: 803 sf Storage Target: 0.10 in 8.27 in/hr infiltration rate 20 sf, bottom area Vol. Required:7 cf 170 cf, total volume provided Vol. Required:0.000 af 12 hours <72 hours, ok Total Volume Provided:9 cf Type III 24-hr 100 yr 24 hr Rainfall=7.37"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond 1P: Bioretention Basin Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 9.00 41 0 9.02 43 1 9.04 44 2 9.06 46 3 9.08 48 4 9.10 49 5 9.12 51 6 9.14 53 7 9.16 54 8 9.18 56 9 9.20 58 10 9.22 59 11 9.24 61 12 9.26 63 13 9.28 65 15 9.30 66 16 9.32 68 17 9.34 70 19 9.36 71 20 9.38 73 22 9.40 75 23 9.42 76 25 9.44 78 26 9.46 80 28 9.48 81 29 9.50 83 31 9.52 85 33 9.54 86 34 9.56 88 36 9.58 90 38 9.60 91 40 9.62 93 42 9.64 95 43 9.66 96 45 9.68 98 47 9.70 100 49 9.72 101 51 9.74 103 53 9.76 105 55 9.78 107 58 9.80 108 60 9.82 110 62 9.84 112 64 9.86 113 66 9.88 115 69 9.90 117 71 9.92 118 73 9.94 120 76 9.96 122 78 9.98 123 81 10.00 125 83 10.02 129 86 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 10.04 133 88 10.06 137 91 10.08 141 94 10.10 144 96 10.12 148 99 10.14 152 102 10.16 156 105 10.18 160 109 10.20 164 112 10.22 168 115 10.24 172 119 10.26 176 122 10.28 180 126 10.30 184 129 10.32 187 133 10.34 191 137 10.36 195 141 10.38 199 145 10.40 203 149 10.42 207 153 10.44 211 157 10.46 215 161 10.48 219 165 10.50 223 170 10.52 226 174 10.54 230 179 10.56 234 184 10.58 238 188 10.60 242 193 10.62 246 198 10.64 250 203 10.66 254 208 10.68 258 213 10.70 261 218 10.72 265 224 10.74 269 229 10.76 273 234 10.78 277 240 10.80 281 245 10.82 285 251 10.84 289 257 10.86 293 263 10.88 297 269 10.90 301 274 10.92 304 281 10.94 308 287 10.96 312 293 10.98 316 299 11.00 320 306 1aP Sediment Forebay Routing Diagram for 2024_07_29 Yarmouth PS2 Prepared by CDM Smith, Printed 7/30/2024 HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 2HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Time span=0.00-72.00 hrs, dt=0.02 hrs, 3601 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind+Trans method - Pond routing by Stor-Ind method Peak Elev=0.00' Storage=0 cfPond 1aP: Sediment Forebay Type III 24-hr 2 yr 24 hr Rainfall=3.38"2024_07_29 Yarmouth PS2 Printed 7/30/2024Prepared by CDM Smith Page 3HydroCAD® 10.20-2f s/n 01469 © 2022 HydroCAD Software Solutions LLC Summary for Pond 1aP: Sediment Forebay [43] Hint: Has no inflow (Outflow=Zero) Volume Invert Avail.Storage Storage Description #1 9.00' 9 cf Custom Stage Data (Prismatic) Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 9.00 8 0 0 9.50 26 9 9 Appendix E TSS Removal Spreadsheet V INSTRUCTIONS:Version 1, Automated: Mar. 4, 2008 1. In BMP Column, click on Blue Cell to Activate Drop Down Menu 2. Select BMP from Drop Down Menu 3. After BMP is selected, TSS Removal and other Columns are automatically completed. Location: B C D E F TSS Removal Starting TSS Amount Remaining BMP1 Rate1 Load* Removed (C*D) Load (D-E) Sediment Forebay 0.25 1.00 0.25 0.75 0.00 0.75 0.00 0.75 0.00 0.75 0.00 0.75 0.00 0.75 0.00 0.75 0.00 0.75 0.00 0.75 Total TSS Removal =25% Separate Form Needs to be Completed for Each Outlet or BMP Train Project:Phase1 -Contract 6 Prepared By:DEV *Equals remaining load from previous BMP (E) Date:7/30/2024 which enters the BMPTSS Removal Calculation WorksheetPumping Station 2- Pretreatment Non-automated TSS Calculation Sheet must be used if Proprietary BMP Proposed 1. From MassDEP Stormwater Handbook Vol. 1 Mass. Dept. of Environmental Protection V INSTRUCTIONS:Version 1, Automated: Mar. 4, 2008 1. In BMP Column, click on Blue Cell to Activate Drop Down Menu 2. Select BMP from Drop Down Menu 3. After BMP is selected, TSS Removal and other Columns are automatically completed. Location: B C D E F TSS Removal Starting TSS Amount Remaining BMP1 Rate1 Load* Removed (C*D) Load (D-E) Bioretention Area 0.90 1.00 0.90 0.10 0.00 0.10 0.00 0.10 0.00 0.10 0.00 0.10 0.00 0.10 0.00 0.10 0.00 0.10 0.00 0.10 Total TSS Removal =90% Separate Form Needs to be Completed for Each Outlet or BMP Train Project:Phase1 - Contract 6 Prepared By:DEV *Equals remaining load from previous BMP (E) Date:7/30/2024 which enters the BMPTSS Removal Calculation Worksheet Pumping Station 2 Non-automated TSS Calculation Sheet must be used if Proprietary BMP Proposed 1. From MassDEP Stormwater Handbook Vol. 1 Mass. Dept. of Environmental Protection Appendix F Operation and Maintenance Plan/ Long-Term Pollution Prevention Plan Page | 1 Appendix F - PS2 O_And_M_Ltp Post-Construction Operation and Maintenance Plan Project: Phase 1 – Contract No. 6 - Pumping Station 2 Location: 316 Main Street, West Yarmouth, MA Owner/Responsible Party: Town of Yarmouth Department of Public Works This document describes the operation and maintenance activities for the proposed stormwater management facilities associated with Pumping Station 2. Gravel Stone Surfacing Gravel stone surfacing is located around the wet well, generator, the northern half of the pumping station. Maintenance activities include the following: · Inspect gravel stone surfacing for the accumulation of trash and debris on regularly scheduled dates every six months. Any debris found in the gravel stone surfacing should be promptly removed. The frequency of inspections should be evaluated and adjusted, if warranted by inspection results. · Periodically remove any vegetation growing in the gravel stone surfacing. Sediment Forebay The sediment forebay is located in the bioretention area. Maintenance activities include the following: · Inspect the sediment forebay monthly for sediment depth and signs of rilling and gullying, with repair being performed as needed. · Clean out the sediment forebay at least two times per year and when sediment depth is 3 inches. · Repair any vegetation damaged after removing the sediment. Damaged vegetation should be replaced by either reseeding or resodding. When reseeding, hydroseeding should be accompanied with a tackifier, blanket, or similar practice to ensure that no scour occurs in the forebay, while the seeds germinate and develop roots. Bioretention Area There is a bioretention area located at the entrance to the pumping station driveway. Maintenance activities include the following: · During the six months immediately after construction, inspect the bioretention area following the first two precipitation events of at least 1.0 in to ensure the system is functioning properly. Thereafter, inspect the bioretention basin on an annual basis and after storm events greater than or equal to the 1-year, 24-hour Type III precipitation event (currently 2.8 in/24 hrs). · Annually, check to ensure the filter surface remains well draining after storm events. If filter bed is clogged, is draining poorly, or has standing water on the surface 48 hours after a precipitation event, Page | 2 Appendix F - PS2 O_And_M_Ltp remove top few inches of material, and till, or rake remaining material as needed. Upon failure, excavate the bioretention area, scarify bottom and sides, replace filter fabric and soil, replant, and mulch. On average, replacement or rehabilitation of the filtration media will occur every 8 years. · Remove silt/sediment from the bioretention area when the accumulation exceeds 1 inch. · Perform a minimum of one inspection during the growing season to ensure the health, density and diversity of the vegetation. Vegetation should cover more than 75 percent of the system. Remove and replace dead vegetation. In addition, look for erosion, scour and unwanted growth; any unwanted growth should be removed with minimum disruption to the remaining vegetation. · During the fall, prior to the first snowfall, remove all fallen leaves. · Inspect the bioretention area on a monthly basis to remove trash and debris. · Prune and weed the plantings periodically to control the growth of unwanted plants. To maintain the permeability of the system, the vegetation within the bioretention area must be maintained with lightweight equipment, such as a hand-held line trimmer. · Use zero-phosphorus fertilizers, if needed, to promote growth of the plantings. · Replace the underlying mulch on a yearly basis. · Do not use the bioretention area for stockpiling of plowed snow and ice, compost, or any other material. Page | 3 Appendix F - PS2 O_And_M_Ltp Stormwater Management Facility Inspection Form Location: Pumping Station 2 316 Main Street, West Yarmouth, MA Inspected By: Inspection Date: BMP Measure Status/Inspection Action Taken Gravel Stone Surfacing Sediment Forebay Bioretention Area Page | 4 Appendix F - PS2 O_And_M_Ltp Long-Term Pollution Prevention Plan The following practices will be employed at Pumping Station 2 to provide source control and pollution prevention: 1. The driveway will be periodically swept to remove trash and debris. 2. The gravel stone surfacing and bioretention area will be periodically inspected to remove trash and debris. 3. No hazardous materials shall be stored outside at the site. 4. Salt and de-icing chemicals shall be used sparingly at the site. 5. Any spills that occur at the site shall be contained and cleaned up in a timely manner to prevent the spilled product from entering the gravel stone surfacing and bioretention area. All personnel who provide regular maintenance at Pumping Station 2 shall be trained annually on the pollution prevention measures described above. ATTACHMENT D PHOTOGRAPHS HDD Entry Work Area Parker River Cros s ing Legend 5.97 ft N➤➤N © 2024 Google © 2024 Google © 2024 Google HDD Exi t Wo rk Area Parker River Cros s ing Legend 10 ft N ➤➤N © 2024 Google © 2024 Google © 2024 Google Pump Station Site (PS2) Photo 1: existing parking lot, view facing northeast towards bogs Photo 2: Concrete retaining wall along the edge of existing parking lot and bog access road PS 3 View fac ing s outh 4.73 ft N➤➤N© 2024 Google © 2024 Google © 2024 Google ATTACHMENT E PROJECT PLANS