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Aster Fields NOI Application.pdf wpaform3.doc • rev. 2/8/2018 Page 1 of 9 4 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 Number Document Transaction Number Northampton City/Town Important: When filling out forms on the computer, use only the tab key to move your cursor - do not use the return key. Note: Before completing this form consult your local Conservation Commission regarding any municipal bylaw or ordinance. A. General Information 1. Project Location (Note: electronic filers will click on button to locate project site): 80 Barrett Street a. Street Address Northampton b. City/Town 01060 c. Zip Code Latitude and Longitude: d. Latitude e. Longitude f. Assessors Map/Plat Number 24B-041 & 24B-072 g. Parcel /Lot Number 2. Applicant: Margaret a. First Name Leonard b. Last Name Paradise City Landscape Design c. Organization 50 Rust Ave. d. Street Address Northampton e. City/Town MA f. State 01060 g. Zip Code (413)478-7524 h. Phone Number (302)343-8332 i. Fax Number margaretleonard@comcast.net j. Email Address 3. Property owner (required if different from applicant): Check if more than one owner Anita and Bettina a. First Name Fábos b. Last Name Aster Associates, LLC c. Organization 133 Chestnut Street d. Street Address Amherst e. City/Town MA f. State 01002 g. Zip Code (413)230-6223 h. Phone Number i. Fax Number afabos@asterfields.org j. Email address 4. Representative (if any): Margaret a. First Name Leonard b. Last Name Paradise City Landscape Design c. Company 50 Rust Ave. d. Street Address Northampton e. City/Town MA f. State 01060 g. Zip Code (413)478-7524 h. Phone Number (302)343-8332 i. Fax Number margaretleonard@comcast.net j. Email address 5. Total WPA Fee Paid (from NOI Wetland Fee Transmittal Form): 500 a. Total Fee Paid b. State Fee Paid c. City/Town Fee Paid wpaform3.doc • rev. 2/8/2018 Page 2 of 9 4 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 Number Document Transaction Number Northampton City/Town A. General Information (continued) 6. General Project Description: The work entails replacing a stormwater drainage pipe, reinforcing the edge of a runoff channel, and increasing the height of a berm. The work is in a wetland and wetland buffer zone. Refer to attachment, "Notice of Intent for Aster Fields" for narrative, maps, drawings, photos. 7a. Project Type Checklist: (Limited Project Types see Section A. 7b.) 1. Single Family Home 2. Residential Subdivision 3. Commercial/Industrial 4. Dock/Pier 5. Utilities 6. Coastal engineering Structure 7. Agriculture (e.g., cranberries, forestry) 8. Transportation 9. Other 7b. Is any portion of the proposed activity eligible to be treated as a limited project (including Ecological Restoration Limited Project) subject to 310 CMR 10.24 (coastal) or 310 CMR 10.53 (inland)? 1. Yes No If yes, describe which limited project applies to this project. (See 310 CMR 10.24 and 10.53 for a complete list and description of limited project types) 2. Limited Project Type If the proposed activity is eligible to be treated as an Ecological Restoration Limited Project (310 CMR10.24(8), 310 CMR 10.53(4)), complete and attach Appendix A: Ecological Restoration Limited Project Checklist and Signed Certification. 8. Property recorded at the Registry of Deeds for: Hampshire a. County b. Certificate # (if registered land) 125 c. Book 96 d. Page Number B. Buffer Zone & Resource Area Impacts (temporary & permanent) 1. Buffer Zone Only – Check if the project is located only in the Buffer Zone of a Bordering Vegetated Wetland, Inland Bank, or Coastal Resource Area. 2. Inland Resource Areas (see 310 CMR 10.54-10.58; if not applicable, go to Section B.3, Coastal Resource Areas). Check all that apply below. Attach narrative and any supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location. wpaform3.doc • rev. 2/8/2018 Page 3 of 9 4 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 Number Document Transaction Number Northampton City/Town B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont’d) For all projects affecting other Resource Areas, please attach a narrative explaining how the resource area was delineated. Resource Area Size of Proposed Alteration Proposed Replacement (if any) a. Bank 400 1. linear feet 400 2. linear feet b. Bordering Vegetated Wetland 2170 1. square feet 2170 2. square feet c. Land Under Waterbodies and Waterways 1. square feet 2. square feet 5-7 3. cubic yards dredged Resource Area Size of Proposed Alteration Proposed Replacement (if any) d. Bordering Land Subject to Flooding 1. square feet 2. square feet 3. cubic feet of flood storage lost 4. cubic feet replaced e. Isolated Land Subject to Flooding 1. square feet 2. cubic feet of flood storage lost 3. cubic feet replaced f. Riverfront Area 1. Name of Waterway (if available) - specify coastal or inland 2. Width of Riverfront Area (check one): 25 ft. - Designated Densely Developed Areas only 100 ft. - New agricultural projects only 200 ft. - All other projects 3. Total area of Riverfront Area on the site of the proposed project: square feet 4. Proposed alteration of the Riverfront Area: a. total square feet b. square feet within 100 ft. c. square feet between 100 ft. and 200 ft. 5. Has an alternatives analysis been done and is it attached to this NOI? Yes No 6. Was the lot where the activity is proposed created prior to August 1, 1996? Yes No 3. Coastal Resource Areas: (See 310 CMR 10.25-10.35) Note: for coastal riverfront areas, please complete Section B.2.f. above. wpaform3.doc • rev. 2/8/2018 Page 4 of 9 4 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 Number Document Transaction Number Northampton City/Town B. Buffer Zone & Resource Area Impacts (temporary & permanent) (cont’d) Check all that apply below. Attach narrative and supporting documentation describing how the project will meet all performance standards for each of the resource areas altered, including standards requiring consideration of alternative project design or location. Online Users: Include your document transaction number (provided on your receipt page) with all supplementary information you submit to the Department. 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 Beach Indicate size under Coastal Beaches and/or Coastal Dunes below d. Coastal Beaches 1. square feet 2. cubic yards beach nourishment e. Coastal Dunes 1. square feet 2. cubic yards dune nourishment Size of Proposed Alteration Proposed Replacement (if any) f. Coastal Banks 1. linear feet g. Rocky Intertidal Shores 1. square feet h. Salt Marshes 1. square feet 2. sq ft restoration, rehab., creation i. Land Under Salt Ponds 1. square feet 2. cubic yards dredged j. Land Containing Shellfish 1. square feet k. Fish Runs Indicate size under Coastal Banks, inland Bank, Land Under the Ocean, and/or inland Land Under Waterbodies and Waterways, above 1. cubic yards dredged l. Land Subject to Coastal Storm Flowage 1. square feet 4. Restoration/Enhancement If the project is for the purpose of restoring or enhancing a wetland resource area in addition to the square footage that has been entered in Section B.2.b or B.3.h above, please enter the additional amount here. a. square feet of BVW b. square feet of Salt Marsh 5. Project Involves Stream Crossings a. number of new stream crossings b. number of replacement stream crossings wpaform3.doc • rev. 2/8/2018 Page 5 of 9 4 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 Number Document Transaction Number Northampton City/Town C. Other Applicable Standards and Requirements This is a proposal for an Ecological Restoration Limited Project. Skip Section C and complete Appendix A: Ecological Restoration Limited Project Checklists – Required Actions (310 CMR 10.11). Streamlined Massachusetts Endangered Species Act/Wetlands Protection Act Review 1. Is any portion of the proposed project located in Estimated Habitat of Rare Wildlife as indicated on the most recent Estimated Habitat Map of State-Listed Rare Wetland Wildlife published by the Natural Heritage and Endangered Species Program (NHESP)? To view habitat maps, see the Massachusetts Natural Heritage Atlas or go to http://maps.massgis.state.ma.us/PRI_EST_HAB/viewer.htm. a. Yes No If yes, include proof of mailing or hand delivery of NOI to: Natural Heritage and Endangered Species Program Division of Fisheries and Wildlife 1 Rabbit Hill Road Westborough, MA 01581 Phone: (508) 389-6360 b. Date of map If yes, the project is also subject to Massachusetts Endangered Species Act (MESA) review (321 CMR 10.18). To qualify for a streamlined, 30-day, MESA/Wetlands Protection Act review, please complete Section C.1.c, and include requested materials with this Notice of Intent (NOI); OR complete Section C.2.f, if applicable. If MESA supplemental information is not included with the NOI, by completing Section 1 of this form, the NHESP will require a separate MESA filing which may take up to 90 days to review (unless noted exceptions in Section 2 apply, see below). c. Submit Supplemental Information for Endangered Species Review∗ 1. Percentage/acreage of property to be altered: (a) within wetland Resource Area percentage/acreage (b) outside Resource Area percentage/acreage 2. Assessor’s Map or right-of-way plan of site 2. Project plans for entire project site, including wetland resource areas and areas outside of wetlands jurisdiction, showing existing and proposed conditions, existing and proposed tree/vegetation clearing line, and clearly demarcated limits of work ∗∗ (a) Project description (including description of impacts outside of wetland resource area & buffer zone) (b) Photographs representative of the site C. Other Applicable Standards and Requirements (cont’d) ∗ Some projects not in Estimated Habitat may be located in Priority Habitat, and require NHESP review (see http://www.mass.gov/eea/agencies/dfg/dfw/natural-heritage/regulatory-review/). Priority Habitat includes habitat for state-listed plants ∗∗ MESA projects may not be segmented (321 CMR 10.16). The applicant must disclose full development plans even if such plans are not required as part of the Notice of Intent process. wpaform3.doc • rev. 2/8/2018 Page 6 of 9 4 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 Number Document Transaction Number Northampton City/Town (c) MESA filing fee (fee information available at http://www.mass.gov/dfwele/dfw/nhesp/regulatory_review/mesa/mesa_fee_schedule.htm). Make check payable to “Commonwealth of Massachusetts - NHESP” and mail to NHESP at above address Projects altering 10 or more acres of land, also submit: (d) Vegetation cover type map of site (e) Project plans showing Priority & Estimated Habitat boundaries (f) OR Check One of the Following 1. Project is exempt from MESA review. Attach applicant letter indicating which MESA exemption applies. (See 321 CMR 10.14, http://www.mass.gov/dfwele/dfw/nhesp/regulatory_review/mesa/mesa_exemptions.htm; the NOI must still be sent to NHESP if the project is within estimated habitat pursuant to 310 CMR 10.37 and 10.59.) 2. Separate MESA review ongoing. a. NHESP Tracking # b. Date submitted to NHESP 3. Separate MESA review completed. Include copy of NHESP “no Take” determination or valid Conservation & Management Permit with approved plan. 3. For coastal projects only, is any portion of the proposed project located below the mean high water line or in a fish run? a. Not applicable – project is in inland resource area only b. Yes No If yes, include proof of mailing, hand delivery, or electronic delivery of NOI to either: South Shore - Cohasset to Rhode Island border, and the Cape & Islands: Division of Marine Fisheries - Southeast Marine Fisheries Station Attn: Environmental Reviewer 836 South Rodney French Blvd. New Bedford, MA 02744 Email: DMF.EnvReview-South@state.ma.us North Shore - Hull to New Hampshire border: Division of Marine Fisheries - North Shore Office Attn: Environmental Reviewer 30 Emerson Avenue Gloucester, MA 01930 Email: DMF.EnvReview-North@state.ma.us Also if yes, the project may require a Chapter 91 license. For coastal towns in the Northeast Region, please contact MassDEP’s Boston Office. For coastal towns in the Southeast Region, please contact MassDEP’s Southeast Regional Office. C. Other Applicable Standards and Requirements (cont’d) wpaform3.doc • rev. 2/8/2018 Page 7 of 9 4 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 Number Document Transaction Number Northampton City/Town Online Users: Include your document transaction number (provided on your receipt page) with all supplementary information you submit to the Department. 4. 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 MassDEP Website for ACEC locations). Note: electronic filers click on Website. b. ACEC 5. 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 6. 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 7. Is this project subject to provisions of the MassDEP Stormwater Management Standards? a. Yes. Attach a copy of the Stormwater Report as required by the Stormwater Management Standards per 310 CMR 10.05(6)(k)-(q) and check if: 1. Applying for Low Impact Development (LID) site design credits (as described in Stormwater Management Handbook Vol. 2, Chapter 3) 2. A portion of the site constitutes redevelopment 3. Proprietary BMPs are included in the Stormwater Management System. b. No. Check why the project is exempt: 1. Single-family house 2. Emergency road repair 3. Small Residential Subdivision (less than or equal to 4 single-family houses or less than or equal to 4 units in multi-family housing project) with no discharge to Critical Areas. D. Additional Information This is a proposal for an Ecological Restoration Limited Project. Skip Section D and complete Appendix A: Ecological Restoration Notice of Intent – Minimum Required Documents (310 CMR 10.12). Applicants must include the following with this Notice of Intent (NOI). See instructions for details. Online Users: Attach the document transaction number (provided on your receipt page) for any of the following information you submit to the Department. 1. 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. D. Additional Information (cont’d) wpaform3.doc • rev. 2/8/2018 Page 8 of 9 4 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 Number Document Transaction Number Northampton City/Town 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. Prepared By c. Signed and Stamped by d. Final Revision Date e. Scale f. Additional Plan or Document Title g. Date 5. If there is more than one property owner, please attach a list of these property owners not listed on this form. 6. Attach proof of mailing for Natural Heritage and Endangered Species Program, if needed. 7. Attach proof of mailing for Massachusetts Division of Marine Fisheries, if needed. 8. Attach NOI Wetland Fee Transmittal Form 9. Attach Stormwater Report, if needed. E. Fees 1. Fee Exempt: No filing fee shall be assessed for projects of any city, town, county, or district of the Commonwealth, federally recognized Indian tribe housing authority, municipal housing authority, or the Massachusetts Bay Transportation Authority. Applicants must submit the following information (in addition to pages 1 and 2 of the NOI Wetland Fee Transmittal Form) to confirm fee payment: 10757 2. Municipal Check Number 8-12-2019 3. Check date 4. State Check Number 5. Check date Paradise City Landscape Design 6. Payor name on check: First Name 7. Payor name on check: Last Name F. Signatures and Submittal Requirements wpaform3.doc • rev. 2/8/2018 Page 9 of 9 4 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 Number Document Transaction Number Northampton City/Town 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 8-12-2019 2. Date 3. Signature of Property Owner (if different) 4. Date 5. Signature of Representative (if any) t 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 any part of Section C, Item 3, above, refer to that section and the Instructions for additional submittal requirements. The original and copies must be sent simultaneously. Failure by the applicant to send copies in a timely manner may result in dismissal of the Notice of Intent. noifeetf.doc • Wetland Fee Transmittal Form • rev. 10/11 Page 1 of 2 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands NOI Wetland Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 Important: When filling out forms on the computer, use only the tab key to move your cursor - do not use the return key. A. Applicant Information 1. Location of Project: 80 Barrett S a. Street Address Northampton b. City/Town c. Check number 500 d. Fee amount 2. Applicant Mailing Address: Margaret a. First Name Leonard b. Last Name Paradise City Landscape Design c. Organization 50 Rust Ave. d. Mailing Address Northampton` e. City/Town MA f. State 01060 g. Zip Code (413)478-7524 h. Phone Number (302)343-8332 i. Fax Number margaretleonard@comcast.net j. Email Address 3. Property Owner (if different): Anita and Bettina a. First Name Fabos b. Last Name Aster Associates, LLC c. Organization PO Box 1130 d. Mailing Address Easthampton e. City/Town MA f. State 01027 g. Zip Code 413-230-6223 h. Phone Number i. Fax Number afabos@asterfields.org j. Email Address To calculate filing fees, refer to the category fee list and examples in the instructions for filling out WPA Form 3 (Notice of Intent). B. Fees Fee should be calculated using the following process & worksheet. Please see Instructions before filling out worksheet. Step 1/Type of Activity: Describe each type of activity that will occur in wetland resource area and buffer zone. Step 2/Number of Activities: Identify the number of each type of activity. Step 3/Individual Activity Fee: Identify each activity fee from the six project categories listed in the instructions. Step 4/Subtotal Activity Fee: Multiply the number of activities (identified in Step 2) times the fee per category (identified in Step 3) to reach a subtotal fee amount. Note: If any of these activities are in a Riverfront Area in addition to another Resource Area or the Buffer Zone, the fee per activity should be multiplied by 1.5 and then added to the subtotal amount. Step 5/Total Project Fee: Determine the total project fee by adding the subtotal amounts from Step 4. Step 6/Fee Payments: To calculate the state share of the fee, divide the total fee in half and subtract $12.50. To calculate the city/town share of the fee, divide the total fee in half and add $12.50. noifeetf.doc • Wetland Fee Transmittal Form • rev. 10/11 Page 2 of 2 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands NOI Wetland Fee Transmittal Form Massachusetts Wetlands Protection Act M.G.L. c. 131, §40 B. Fees (continued) Step 1/Type of Activity Step 2/Number of Activities Step 3/Individual Activity Fee Step 4/Subtotal Activity Fee Drainage repairs/improvements 1 500 500 Step 5/Total Project Fee: 500 Step 6/Fee Payments: Total Project Fee: 500 a. Total Fee from Step 5 State share of filing Fee: 237.50 b. 1/2 Total Fee less $12.50 City/Town share of filling Fee: 262.50 c. 1/2 Total Fee plus $12.50 C. Submittal Requirements a.) Complete pages 1 and 2 and send with a check or money order for the state share of the fee, payable to the Commonwealth of Massachusetts. Department of Environmental Protection Box 4062 Boston, MA 02211 b.) To the Conservation Commission: Send the Notice of Intent or Abbreviated Notice of Intent; a copy of this form; and the city/town fee payment. To MassDEP Regional Office (see Instructions): Send a copy of the Notice of Intent or Abbreviated Notice of Intent; a copy of this form; and a copy of the state fee payment. (E-filers of Notices of Intent may submit these electronically.) Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net Narrative for Notice of Intent for Aster Fields, 80 Barrett Street, Northampton Parcel ID 24B-041 and 24B-072 In the 1960’s, Aster Fields was built along the Barrett Street Marsh. Graphic #1 shows an aerial map of Aster Fields with Jackson Street Elementary School in the west and King Street to the east. The Barrett Street Marsh abuts the southern boundary of the property. Graphic #2 illustrates the layout of the apartment complex, with (3) residential apartment buildings immediately off Barrett Street, and a larger (3) story building, called Aster Row, located in the lower elevation along the Barrett Street Marsh. Graphic #3, a planimetric map from 1967, shows the location of Aster Row in the lower portion of the property relative to the surrounding watershed. A drainage system utilizing a designed berm and releasing stormwater flow into the nearby channel addressed Aster Field’s drainage needs until the last decade. With increasingly severe storm events, the volume of water that the drainage system needs to process is in danger of over flowing the current berm. Moreover, sediment deposits over time have raised the bottom of the channel so that the flowing stormwater may soon overflow the sides of the embankment. Project scope All work is to be completed near Aster Row, the lower apartment building at Aster Fields, and the scope of the proposed work is three-fold: 1. Replace the broken asbestos concrete pipe that carries stormwater to the runoff channel behind Aster Row 2. Armor the structure side of the channel behind Aster Row to protect the edge of the embankment from erosion 3. Raise the level of the existing berm by 18-22” to prevent flooding of the apartment building The work is within the wetland and the wetland buffer, and it is subject to the regulations of the Wetlands Protection Act. The extent of the work is illustrated in the attached drawing, Aster Fields, Proposed Hydrology near Aster Row (Aster Fields NOI Graphic #4). We would like to complete the work in early Fall, 2019, during the dry season. Below is a discussion for each project. Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 2 Project #1. Replace broken asbestos concrete pipe The stormwater pipe flows under both the parking lot and the open space on the southern end of Aster Row and is approximately 165’ in length. It is broken where it meets the runoff channel, and the last 25’ of pipe holds water continuously (documented by Fletcher Sewer and Drain in October, 2018). Photos #1 and #2 illustrate the broken outflow pipe in the channel. Graphic #4a shows the location of the new drainage pipe to be positioned over the existing pipe. Stormwater from catch basins 1-3 flows into catch basin 4 along the parking lot edge. The invert of the inflow pipe is 48”. The invert of the outflow pipe is 22” below the invert of the inflow pipe or 70”. We will install the replacement pipe using 12” PVC at an invert height 8” below the invert of the inflow pipe, or 56”. Graphic #4b compares the positioning of the old and the new pipes and describes the materials to be used in the replacement. The work will be completed as follows: Sediment prevention a. Straw wattle (12” diameter) will be installed as shown in Graphic #4a. The straw wattle will be installed similarly to a silt fence with stakes driven every 4’ through the rear half of the logs perpendicular to the slope. Separate pieces will overlap by 6”. b. Two runs of straw wattle will protect from above the embankment, with the ends extending uphill to prevent flow bypassing. A third segment will reside in the channel. The three segments will provide multiple lines of protection, overlapping and working together to prevent sediment flow into the channel. c. The wattles will be left in place until work is completed and the embankment is stabilized with vegetation (grass). Excavation a. Asphalt from the parking lot will be cut, removed and properly disposed of over the first 75’ above the existing buried pipe. b. Garden fencing and posts will be temporarily moved to give machine access for digging the trench for the new pipe. Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 3 Project #1. Replace broken asbestos concrete pipe (cont’d) c. Care will be taken to protect a nearby sycamore tree. d. A trench will be dug using a backhoe to a depth necessary for the new pipe (refer to Graphic #4b). The new pipe will be located above the existing pipe, which will remain buried to minimize disturbance to the site. e. A concrete plug will be placed in the catch basin where the current pipe is connected. A new hole will be drilled in the catch basin to allow for the new 12” PVC pipe to be connected. f. An ADS flared end attachment will allow water to slow and disperse into the channel. The bed at the stormwater outflow will be lined with 2-3” rip rap, slowing the velocity of the water as it merges with flow in the runoff channel. g. The pipe trench will be backfilled with soil from site, smoothed and raked, then overseeded with a conservation grass seed and mulched with a shredded straw mulch. No material is expected to be removed from or added to the site. h. Sediment prevention measures (the wattles) will remain in place until the grass is well- established on the disturbed site. Performance standard It is expected that there will be minimal adverse impact on the stream channel because the volume of water released will be unchanged from existing conditions. Wildlife habitat will be enhanced because the installation will stabilize the embankment and stop the erosion due to the pipe breakage. Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 4 Project #2: Armor the channel behind Aster Row The runoff channel, behind Aster Row, is situated within the Aster Fields property line, and it carries stormwater from a number of sources: - Rainwater from the surrounding properties, including the Barrett Street Marsh - Stormwater from the Aster Row parking lot via catch basins - Roof runoff from gutters connected to PVC pipes that flow into the channel Photos 3-4 show the runoff channel in mid-June, 2018, and Photos 5-6 illustrate flow in October, 2018. In both cases, the channel is full to capacity and is in danger of overflowing the existing berm. Photo #6 illustrates a significant breach in the embankment with water channeled from the abutting Barrett Street Marsh in October, 2018. This project consists of installing the Filtrexx Bank Stabilization System to strengthen the edges of the runoff channel. The armoring will be approximately 400’ in length lining the channel starting on the western end of Aster Row and will extend to the outflow pipe from the parking lot catch basins. The armoring will consist of (3) rows of 12-inch Filtrexx Grow Soxx as described later in this narrative. Refer to Graphic #5 for an illustration of the placement of the Filtrexx soxx. The armoring will work in conjunction with enhancing the height of the berm, as illustrated in the elevation shown in Graphic #5a. The Filtrexx® Bank Stabilization vegetated soft armoring system is designed to stabilize banks and prevent erosion of waterway and shoreline banks. The bank stabilization system is composed of GroSoxx® - heavy duty tubular mesh netting matrix used to contain and stabilize GrowingMedia™ and vegetation. The bank stabilization technology provides structural protection, erosion control, vegetation growth, and vegetation reinforcement in one system. The bank stabilization weight and anchoring system can withstand storm runoff velocities and hydraulic shear stresses similar to traditional soft armoring devices (brush mattresses, coconut fiber logs, turf reinforcement mats), while the injected GrowingMedia ensures establishment and sustainability of both seeded and live stake plantings. Bank stabilization is specifically designed to establish and reinforce vegetation under intense hydraulic pressure. Refer to Appendix A for product information about the Filtrexx® Bank Stabilization system. Sediment prevention We hope to work during a period of minimal water flow in the channel and keep our excavation and soil disturbance to a minimum. Refer to Photos 7-8 for examples of stream levels in the channel during excavation. Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 5 Project #2: Armor the channel behind Aster Row (cont’d) a. Straw wattles (12” diameter) will be installed to divert water to the opposite side of the channel. The position of the straw wattle will be as close to the existing edge of the embankment while also allowing room to install the Filtrexx Soxx. b. The straw wattle will be installed the entire length of the Filtrexx Soxx as shown in Graphic #5. c. Every effort will be made to ensure the channel is maintained at maximum width to ensure that no scouring of the existing sediment will occur, and no controls will be installed unless deemed to be required. Soil Disturbance Some soil will need to be moved along the bank to insure proper installation of the Soxx system. The Soxx must make good contact with the side of the channel with no voids to allow water behind the Soxx during “grow in”. Some soil will need to be shaped along the bank to insure proper installation of the Soxx system. a. Every effort will be made to maintain the natural shape and flow of the channel. b. Soil movement will be kept to a minimum and placed above the Soxx along the channel to be utilized in any shaping of the berm that is required after installation. c. All soils will remain on site and any additional soil required to grade away from the Soxx will be kept to a minimum. d. Two methods of excavation will be used for this process: by machine and by hand. Utilizing a small Mini excavator, which is a more traditional method by current standards, is the faster method giving the best results. There is, however, a concern that soft soils near the excavation site will be negatively impacted by machine access. Hand excavation will cause less damage to non-target areas causing less restoration, but will require more time, possibly exposing the site to additional rain events. We will use a mix of both machine and hand digging to achieve the best of both methods. e. Access mats will be used to protect the berm from machinery. Soxx Installation a. Bank stabilization will be placed in a manner that protects the entire bank or shoreline from erosion and destabilization. In this case approximately 400 feet of bank 3 Soxx high Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 6 Project #2: Armor the channel behind Aster Row (cont’d) b. Land surface will be cleared of debris, including rocks, roots, large clods, and sticks prior to bank stabilization installation. c. Waterway bank or shoreline will be made smooth prior to installation of Bank stabilization. d. Excavation will be to a minimum of 6 inches below the scour line. e. Bank stabilization is staked on 5 foot intervals and made in continuous lengths and sleeved where needed. Stakes are of a hardwood. f. Bank stabilization will be fabricated on-site. g. Bank stabilization will be placed parallel to concentrated water flow where Soxx are tightly stacked or abutted to prevent water seepage between and underneath the system. h. Once in place, Bank stabilization Soxx™ will be lightly compacted to tighten seal between socks and encourage even water flow over the surface of the system. i. Bank stabilization will be seeded at the time of application with a dense shade grass blend. Native grasses will be used, such as Carex pennsylvanica, as recommended by “Appendix B: Native Plant List for Vegetated Buffers in New England, “ The Massachusetts Buffer Manual, (2003). j. Seed will be thoroughly mixed with the GrowingMedia prior to construction. The growing media is derived from 100% yard/wood trimmings compost (manure-free). k. After grass blend establishment, the system may be live staked with desirable species identified at or adjacent to the site. l. No fertilizers will be incorporated into the GrowingMedia prior to installation and no fertilizer will be added in the future Performance standards The physical stability of the bank will be greatly improved with the Filtrexx Soxx, and the water flow in the channel will not be obstructed. The water carrying capacity of the channel will be enhanced because the Filtrexx Sox will discourage erosion, enabling the water to flow freely and without slowing down. Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 7 Project #3: Enhance the Berm The berm between Aster Row and the channel protects against the water flowing towards the building much like a levee does. This project raises the height of the berm, working with the Filtrexx Soxx system, to continue protecting the building as rain events and stormwater become more severe. The Filtrexx Soxx system provides a more vertical edge to the runoff channel, and this will have less impact on the flow of water; a more gradual edge would slow the flow of water and cause more sediment buildup. The amount of fill to raise the berm will be less with the Filtrexx Soxx product because the height is achieved with the sock. Graphic #5b shows the Soxx providing a vertical gain in a short distance, allowing the berm to be more gradual and gentle on the building side. At the southwest corner of the property, the channel has breached the current berm, causing erosion of the embankment because the water direction is changing 90 degrees. The Soxx will allow curving the water flow in a more gentle manner without having to excavate existing material. Installation Once the Filtrexx Soxx is installed, the berm will be augmented. a. Approximately 90-100 yards of top soil will be used to raise the height of the existing berm along the armored channel. The final berm will be Top soil will be as clean as possible from local sources. b. The material will be manually moved with wheelbarrows and raked by hand. c. The berm will be graded gently away from the Filtrexx Soxx to allow for planting a mix of native shrubs and perennials. d. A community of plants will be used to establish layers within the planting area. An effort will be made to provide a variety of sizes and species of native plants, including deciduous and evergreen shrubs as well as perennials and groundcovers. These include but are not limited to: ferns, winterberry, witch hazel, inkberry, swamp azalea, and others, as recommended by “Appendix B: Native Plant List for Vegetated Buffers in New England, “ The Massachusetts Buffer Manual, (2003). Paradise City Landscape Design Northampton, Massachusetts P.O. Box 985, Northampton, Massachusetts, 01061 □ 413.478.7524 □ margaretleonard@comcast.net 8 Project #3: Enhance the Berm (cont’d) e. Plants will be installed using hand-digging methods to minimize soil disturbance. f. Plants will be mulched with mulch locally available and made of a blend of hardwoods and no dyes. Performance standards Although this project will alter the bordering vegetated wetland, the enhancements will improve wildlife habitat. Plantings of native perennials and shrubs will provide increased food and shelter, and wildlife will continue to have unobstructed access to the wetland. The plantings will also help stabilize the embankment by working in conjunction with the Filtrexx Soxx. Water flow in the channel will ultimately be unimpeded, and ultimately, the flow will be ensured as erosion is reduced. Aster Fields NOI Photo #7 Empty channel looking downstream August 6, 2019