Loading...
HomeMy WebLinkAboutBarnstable Old Shore Road NOI-with plans 24004246.001A April 02, 2025 © 2025 Kleinfelder www.kleinfelder.com OLD SHORE ROAD STORMWATER QUALITY IMPROVEMENT PROJECT NOTICE OF INTENT APRIL 02, 2025 PROPONENT: TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS BARNSTABLE, MA 02601 PROJECT AREA: OLD SHORE ROAD, VILLAGE OF COTUIT BARNSTABLE, MA 02635 SUBMITTED TO: Town of Barnstable Conservation Commission 230 South Street Hyannis, MA 02601 PREPARED BY: Kleinfelder, Inc. One Beacon Street, Suite 8100 Boston, MA 02108 Phone: 617.497.7800 Kleinfelder Project Number: 24004246.001A Copyright 2025 Kleinfelder All Rights Reserved NOI: Old Shore Road Stormwater Quality Improvement Project Table of Contents Notice of Intent Form WPA Form 3 – Notice of Intent Notice of Intent Figures Figure 1 – USGS Locus Map Figure 2 – Tax Parcel Map Figure 3 – Aerial Map Figure 4 – NHESP Map Figure 5 – Flood Zone Map Attachment A – NOI Narrative Attachment B – Project Plans Attachment C – Delineation Summary Attachment D – Stormwater Memo Attachment E – Abutter Information Attachment F – Chapter 707 NOI Submission Checklist Signature 4/16/2025 3000 ft N➤➤N Image © 2025 Airbus Image © 2025 Airbus Image © 2025 Airbus PROJECT AREA Old Shore Road Stormwater Quality Improvement Project Figure 1: USGS Locus Map 2,000.00 This map is for illustration purposes only. It is not adequate for legal boundary determination or regulatory interpretation. This map does not represent an on-the-ground survey. It may be generalized, may not reflect current conditions, and may contain cartographic errors or omissions. Parcel lines shown on this map are only graphic representations of Assessor’s tax parcels. They are not true property boundaries and do not represent accurate relationships to physical objects on the map such as building locations. 3330167 Feet feetApprox. Scale: 1 inch = 167 Legend Town of Barnstable GIS Unit 367 Main Street, Hyannis, MA 02601 508-862-4624 gis@town.barnstable.ma.us Map printed on: 9/30/2024 Parcels Town Boundary Railroad Tracks Buildings Approx. Building Buildings Painted Lines Parking Lots Paved Unpaved Driveways Paved Unpaved Roads Paved Road Unpaved Road Bridge Paved Median Streams Marsh Water Bodies APPROX. PROJECT LIMIT Old Shore Road Stormwater Quality Improvement Project Figure 2: Tax Parcel Map 2,000.00 This map is for illustration purposes only. It is not adequate for legal boundary determination or regulatory interpretation. This map does not represent an on-the-ground survey. It may be generalized, may not reflect current conditions, and may contain cartographic errors or omissions. Parcel lines shown on this map are only graphic representations of Assessor’s tax parcels. They are not true property boundaries and do not represent accurate relationships to physical objects on the map such as building locations. 3330167 Feet feetApprox. Scale: 1 inch = 167 Legend Town of Barnstable GIS Unit 367 Main Street, Hyannis, MA 02601 508-862-4624 gis@town.barnstable.ma.us Map printed on: 3/18/2025 Road Names Old Shore Road Stormwater Quality Improvement Project Figure 3: Aerial Map APPROX. PROJECT LIMIT 2,000.00 This map is for illustration purposes only. It is not adequate for legal boundary determination or regulatory interpretation. This map does not represent an on-the-ground survey. It may be generalized, may not reflect current conditions, and may contain cartographic errors or omissions. Parcel lines shown on this map are only graphic representations of Assessor’s tax parcels. They are not true property boundaries and do not represent accurate relationships to physical objects on the map such as building locations. 3330167 Feet feetApprox. Scale: 1 inch = 167 Legend Town of Barnstable GIS Unit 367 Main Street, Hyannis, MA 02601 508-862-4624 gis@town.barnstable.ma.us Map printed on: 9/26/2024 NHESP Priority Habitats of Rare Species NHESP Estimated Habitats of Rare Wildlife Parcels Town Boundary Railroad Tracks Buildings Approx. Building Buildings Painted Lines Parking Lots Paved Unpaved Driveways Paved Unpaved Roads Paved Road Unpaved Road Bridge Paved Median Streams Marsh Water Bodies APPROXIMATE PROJECT LIMIT Old Shore Road Stormwater Quality Improvement Project Figure 4: NHESP Map FEMA Flood Zones - Effective July 16, 2014 This map is for planning purposes only. It is not adequate for legal boundary determination or regulatory interpretation. This map does not represent an on-the-ground survey. 9/26/2024Map printed on: This map represents a subset of the information found on the official FEMA FIRM maps. The full FEMA FIRM maps can be viewed on the Town website using the QR code to the right: or at http://www.town.barnstable.ma.us/Conservation/InsuranceMaps.asp Town of Barnstable GIS Unit 367 Main Street, Hyannis, MA (508) 862-4624 Parcel lines on this map are only graphic representations of Assessor’s tax parcels. They are not true property boundaries and do not represent accurate relationships to physical objects on the map such as building locations. 000 Miles feetApprox. Scale: 1 inch = 167 Legend Parcels Railroad Tracks Buildings Approx. Building Buildings Painted Lines Parking Lots Paved Unpaved APPROX. PROJECT LIMIT Old Shore Road Stormwater Quality Improvement Project Figure 5: Flood Zone Map Imagery ©2024 Airbus, CNES / Airbus, Landsat / Copernicus, Maxar Technologies, Map data ©2024 Google 1 mi Barnstable Public Works Depament 382 Falmouth Rd, Hyannis, MA 02601 1.Head east toward Falmouth Rd 2.Turn right toward Falmouth Rd 3.Turn right onto Falmouth Rd 4.Turn left onto Putnam Ave 5.Turn left onto Old Shore Rd Old Shore Rd Barnstable, MA 02635 135 ft 226 ft 6.5 mi 1.9 mi 0.1 mi Drive 8.6 miles, 18 minBarnstable Public Works Department, 382 Falmouth Rd, Hyannis, MA 02601 to Old Shore Rd, Barnstable, MA 02635 Street directions to the site. NOI: Old Shore Road Stormwater Quality Improvement Project ATTACHMENT A NOI Narrative ____________________________________________________________________________ NOI: Old Shore Road Stormwater Quality Improvement Project Page 1 Attachment A – Notice of Intent Narrative This Notice of Intent (NOI) is filed pursuant to the Massachusetts Wetlands Protection Act (WPA) (MGL Chapter 131, Section 40) and its implementing regulations (310 CMR 10.00), as well as in accordance with the Town of Barnstable Wetlands Protection Bylaw and Regulations (Chapter 237-Bylaw; Part VII-Regulations). This narrative presents regulated resource areas associated with the Town of Barnstable’s (Town) Old Shore Road Stormwater Quality Improvement Project (Project) area, a description of the proposed work, proposed mitigation measures, and how the Project protects the interests of the WPA. Refer to the accompanying Project plans included as Attachment B for a plan layout and details of the Project components. Introduction The Town of Barnstable provides public access to Ropes Beach and the nearby boat ramp along Old Shore Road. Throughout the year, vehicles park alongside the roadway near the boat ramp. Town personnel have observed erosion and gullying along the edges of Old Shore Road, particularly in areas where vehicles park. Additionally, the Town has identified that the existing leaching basin system within Old Shore Road is not functioning as intended and carries a high maintenance burden. The Town is proposing to improve stormwater treatment within the Project area by retrofitting the existing drainage system within Old Shore Road with underground infiltration chambers and a leaching basin; armoring an existing gravel parking area on the roadway shoulder with structured pervious gravel paving; and planting native bushes to establish a section of the roadway shoulder as a no parking area. The Project is partially funded via a grant from the Cape Cod Conservation District (CCCD). Proposed work for the Project would occur within Land Subject to Coastal Storm Flowage (LSCSF) and the 100- foot Buffer Zone, resources regulated by the WPA. Work will also occur within the Town’s 50-foot Buffer Zone. The proposed Project will improve water quality. Adverse impacts of the Project have been minimized, and mitigation measures are in place in order to protect the interests of the WPA. The proposed Project complies with Part 7 of the Town of Barnstable General Ordinances. Site Description and Existing Conditions The Project is located within the right-of-way of Old Shore Road in Barnstable, MA (Figure 1). The Project area contains the paved roadway and the roadway shoulder. Towards the eastern side of the Project area, the roadway shoulder includes a gravel parking area. The western extent of the Project area includes a section of the roadway shoulder where unauthorized vehicle parking occurs. The use of the shoulder for vehicle parking has caused loss of vegetation and soil exposure. Old Shore Road runs approximately west to east, and wooded or residential properties border the roadway to the north and south. Refer to Figure 2 for a Tax Parcel map and Figure 3 for an aerial map of the Project area. Regulated Resource Areas According to the most recently available data provided by the Massachusetts Natural Heritage and Endangered Species Program (NHESP), no Priority Habitats for Rare Species or Estimated Habitats for Rare Wildlife have been mapped in the vicinity of the Project area (Figure 4). No certified or potential vernal pools have been mapped in NOI: Old Shore Road Stormwater Quality Improvement Project Page 2 the Project area. The Project area is not located within or near an Area of Critical Environmental Concern (ACEC) or an Outstanding Resource Water area. Land Subject to Coastal Storm Flowage Portions of the Project area are shown on the Flood Insurance Rate Map (FIRM) as located within Zone VE (1% Annual Chance Coastal Flood Zone) with a base flood elevation of 14 feet NAVD88 (Figure 5). This area is regulated as Land Subject to Coastal Storm Flowage (LSCSF). Within the Project area, LSCSF contains the existing paved road including existing drainage system, and the existing gravel parking area along the road shoulder. Salt Marsh Wetland resources delineation of the Project area was performed by Crawford Land Management during March of 2024 and surveyed by the Town of Barnstable DPW Survey Section. Salt Marsh was delineated by flags SM 1 through SM 7 to the east of the Project Area, adjacent to Cotuit Bay. Resource areas are shown on the accompanying Project plans (Attachment B) and a delineation summary report is included in Attachment C. No work is proposed within the Salt Marsh. A 100-foot Buffer Zone extends horizontally outward from the Salt Marsh boundary, as defined in 310 CMR 10.02(2)(b). The Buffer Zone is not considered a resource area under the WPA, but areas within the Buffer Zone are under the jurisdiction of the issuing authority. The Town of Barnstable General Ordinance, Chapter 704 implements additional wetland protection by maintaining a unform provision of an undisturbed buffer zone width of 50 feet from a wetland resource. Within the Project area, the Buffer Zone of the salt marsh contains the existing paved road including existing drainage system, and the existing gravel parking area along the road shoulder. Proposed Activities The Project proposes to improve stormwater treatment and water quality by retrofitting the existing drainage system within Old Shore Road with underground infiltration chambers and a leaching basin. The proposed system will be integrated into the existing system of leaching basins to provide maximum stormwater treatment in the Project area. The Project will also include armoring of an existing gravel parking area with structured pervious gravel paving, planting of native shrubs in a no parking area, and repaving a portion of Old Shore Road after installation of the proposed drainage components. The existing catch basins within the roadway will continue to serve as the lowest elevation inlet for the drainage system. New catch basins will be added upgradient of the existing system to improve stormwater capture rates within the drainage area and direct flows to new subsurface chamber infiltration systems. The proposed stormwater treatment includes the installation of two deep sump catch basins, a drain manhole, two sections of underground infiltration chambers totaling approximately 2,600 cubic feet of storage, and piping connections. A new leaching drain manhole will be connected to the existing stormwater system within Old Shore Road. Cape Cod berm curbing will be installed to direct stormwater to the proposed treatment system. The roadway will undergo full depth reconstruction within the Project limits shown on the site plans. No increase in impervious area is proposed. NOI: Old Shore Road Stormwater Quality Improvement Project Page 3 The existing gravel parking area on the roadway shoulder will be resurfaced with structured pervious gravel paving. Details are provided on sheet C-503 of the Project Plans. Upgradient and to the west of the proposed drainage system, the area of the roadway shoulder where unauthorized parking occurs will be restored to prevent erosion of sediment. This will also prevent future use of the area for parking. Restoration includes seeding with a prairie nursery seed mix and planting of native shrubs, see the Planting Plan provided in Attachment B. Temporary construction fencing will be installed around the planting area as plantings establish. Summary of Resource Area Impacts and WPA Compliance Proposed work for the Project would occur within Land Subject to Coastal Storm Flowage, and the 50 and 100- foot Buffer Zones off of the delineated Salt Marsh. Proposed impacts are summarized in the table below. Table 2. WPA Resource Impacts Summary Resource Area Temporary Impact (square feet) 50-foot Salt Marsh Buffer 4,051 100-foot Salt Marsh Buffer 5,397 Land Subject to Coastal Storm Flowage 6,036 Project work within the Town’s 50-foot Buffer Zone includes installation of a portion of the structured pervious gravel paving. The proposed laydown area is within the paved roadway. Additional work within the 100-foot Buffer includes installation of the pervious gravel paving, leaching drain manhole, piping connections to two existing manholes, Cape Cod berm curbing, and roadway reconstruction. The existing stormwater management system will also be refurbished, which will include vacuum cleaning and exposing and replacing manhole covers as needed. Additional Project work within LSCSF includes installation of a drain manhole, piping connections, one of the underground infiltration chambers, Cape Cod berm curbing, and roadway reconstruction. The remaining stormwater system elements, including the deep sump catch basins, one underground infiltration chamber, and additional Cop Cod berm curbing are outside of any regulated WPA resources. The proposed “no parking” restoration area is also outside of regulated WPA resources. The WPA does not include performance standards for work within LSCSF or the 100-foot Buffer Zone. Protection of the interests of the WPA regarding each protected resource is discussed below. Land Subject to Coastal Storm Flowage The Project area is not within any other WPA resource area, therefore there are no other performance standards that apply to the Project. The Project site, consisting of the public road right-of-way, is previously developed. The existing road is paved, with gravel shoulders. NOI: Old Shore Road Stormwater Quality Improvement Project Page 4 The work within LSCSF will not result in a net fill and all work will occur in previously developed areas. Land use and land cover will not change as a result of the Project. There will be no increase to impervious cover as a result of the Project. By implementing the proposed stormwater management practices, stormwater runoff water quality from Old Shore Road to Cotuit Bay is designed to improve. 310 CMR 10.02(2)(b) and Town of Barnstable Wetland Buffer Zones In general, work within a Buffer Zone is permissible when said work has been designed, or can be conditioned, such that there will be no impact on the downgradient wetland resource area(s) being buffered. As stated in 310 CMR 10.53(1) of the WPA Regulations: For work in Buffer Zone subject to review under 310 CMR 10.02(2)(b)3., the Issuing Authority shall impose conditions to protect the interests of the Act identified for the adjacent Resource Area… The issuing authority may consider the characteristics of the Buffer Zone, such as the presence of steep slopes, that may increase the potential for adverse impacts on Resource Areas. Conditions may include limitations on the scope and location of work in the Buffer Zone as necessary to avoid alteration of Resource Areas. The Issuing Authority may require erosion and sedimentation controls during construction, a clear limit of work, and the preservation of natural vegetation adjacent to the Resource Area and/or other measures commensurate with the scope and location of work with the Buffer Zone to protect the interests of the Act. The Town of Barnstable General Ordinance, Chapter 704: Regulation Governing Activity in the 100-ft. Buffer Zone implements additional wetlands protection by maintaining a uniform provision of an undisturbed buffer zone width of 50 feet from a wetland resource. Under current site conditions, a 50-foot undisturbed Buffer Zone does not exist. The proposed work will not change current land use or land cover within the Buffer Zone. Sedimentation barriers will be placed around the perimeter of the work area to prevent migration of excavated material from entering the Salt Marsh. Measures have been incorporated into the Project design to ensure that work will be done in a manner that prevents impacts to downgradient wetland resources. A clear limit of work will be identified, and erosion and sedimentation control areas will be established in the Project area. Temporary disturbance in vegetated areas of Buffer Zone will be restored in place and seeded with a native seed mix following completion of construction. 310 CMR 10.24(7)(c)(1) Limited Project The proposed Project activity is eligible to be treated as a limited project subject to 310 CMR 10.24(7)(c)(1): Maintenance and improvement of existing public roadways, but limited to widening less than a single lane, adding shoulders, correcting substandard intersections, and improving drainage systems. Compliance with Massachusetts Stormwater Policy Runoff generated from impervious surfaces will be collected and managed in accordance with the DEP Stormwater policies in significant improvement to existing conditions. The proposed Project will improve existing conditions within the Project area by constructing a stormwater management system that includes measures to provide NOI: Old Shore Road Stormwater Quality Improvement Project Page 5 groundwater recharge and provide water quality treatment. The system is sized to infiltrate the Water Quality Volume and thus cannot be reliably used to mitigate peak flow rates and volumes during high volume storm events. Full details on the system (including supporting calculations) are included in the accompanying Stormwater Memo (Attachment D). Compliance with the 10 stormwater management standards cited in Section 310 CMR 10.05(6)(k) of the WPA Regulations is evaluated in the Stormwater Management Standards section of the Stormwater Memo. Mitigation The Project is designed to improve stormwater runoff water quality from Old Shore Road to Cotuit Bay. To achieve the Project benefits, construction activities have been designed to avoid, minimize and mitigate negative environmental impacts to the extent feasible. The proposed drainage work has been sited outside of LSCSF and the regulated buffer zones to the maximum extent practicable. Drainage work within regulated areas is essential to maximizing the treatment provided to stormwater along Old Shore Road. The roadway and parking area resurfacing is required to prevent further erosion of the surrounding soils due to stormwater runoff and vehicular traffic. All work that is planned within the LSCSF and buffer zones is considered redevelopment work, and no new impervious surfaces will be added. An erosion and sedimentation control program will be implemented to minimize temporary impacts to wetland resource areas during the construction phase of the Project. The program incorporates Best Management Practices (BMPs) specified in guidelines developed by the DEP and the U.S. Environmental Protection Agency (EPA). Proper implementation of the erosion and sedimentation control measures includes: › Minimizing exposed soil areas through sequencing and temporary stabilization; › Placing structures to manage stormwater runoff and erosion; › Use of de-watering filters such as filter bags and straw bale basins; and › Establishing a permanent vegetative cover or other forms of stabilization as soon as practicable. Non-Structural Practices Non-structural practices to be used during construction include temporary stabilization, temporary seeding, permanent seeding, and dust control. These practices will be initiated as soon as practicable in appropriate areas within the Project Area. Temporary Stabilization Any areas of exposed soil or stockpiles that will remain inactive for more than 14 days will be surrounded by erosion control devices and covered with polyurethane sheeting. NOI: Old Shore Road Stormwater Quality Improvement Project Page 6 Temporary Seeding If conditions allow, a temporary vegetative cover will be established on areas of exposed soils (including stockpiles) that remain unstabilized for a period of more than 60 days. The seeded surfaces will be covered with a layer of straw mulch or bonded fiber matrix. The seed mix shall include a blend of rapid germinating grasses that are indigenous to eastern Massachusetts. Permanent Seeding Areas not covered by pavement, including the prescribed “no parking” planting area will be seeded with a seed mix as specified in the Planting Plan. Mitigation Plantings The Project is not subject to the mitigation requirements stated in the Town of Barnstable Bylaw Chapter 704-3.C and 704-3D, as the Project does not propose any hardscaping. Work will be conducted within the existing paved roadway. Additional work on the shoulder includes installation of pervious gravel. Approximately 690 square feet of native plantings are proposed within the “no parking” planting area. Dust Control The erosion and sediment control program includes provisions to minimize the generation of dust during dry and windy conditions. When necessary, larger areas of exposed soil will be wetted to prevent wind borne transport of fine-grained sediment. Enough water shall be applied to wet the upper 0.5 inches of soil. The water will be applied as a fine spray to prevent erosion. A water truck will be kept on the property (or at a nearby location) to facilitate this practice. Structural Practices Structural erosion and sedimentation controls to be used on the Project Area include barriers, catch basin inlet protection, and dewatering filters. Erosion Control Barriers Prior to any ground disturbance, an approved erosion control barrier will be installed at the downgradient limit of work. As construction progresses, additional barriers will be installed around the base of stockpiles and other erosion prone areas. The barriers will be entrenched into the substrate to prevent underflow. If sediment has accumulated to a depth which impairs proper functioning of the barrier, it will be removed by hand or by machinery operating upslope of the barriers. This material will be either reused in the Project Area or disposed of at a suitable offsite location. Any damaged sections of the barrier will be repaired or replaced immediately upon discovery. NOI: Old Shore Road Stormwater Quality Improvement Project Page 7 Dewatering Filters Dewatering is not anticipated to be required for the project based on estimated seasonal high groundwater levels. If necessary, sediment laden water that collects in trenches or excavated areas will be pumped into straw bale basins or filter bags. The basins will consist of a ring of staked straw bales overlain by non-woven geotextile filter fabric and crushed stone. Discharge water will be pumped into the basin and allowed to drain through the fabric onto relatively flat stabilized surfaces. Dewatering filter bags may be used in place of straw bale basins. The bags will be placed on relatively flat terrain, free of brush and stumps, to avoid ruptures and punctures. A maximum of one six-inch discharge hose will be allowed per filter bag. To help prevent punctures, geotextile fabric will be placed beneath the filter bag when used in wooded locations. Unattended filter bags will be encircled with a straw bale and silt fence barrier. All dewatering structures will be placed as far away from wetland resources as possible. Filter bags used during construction will be bundled and removed for proper disposal. Summary The Applicant respectfully requests that the Barnstable Conservation Commission find these measures adequately protective of the interests identified in the WPA and issue an Order of Conditions approving the work described in this NOI, as shown on the accompanying figures and plans. NOI: Old Shore Road Stormwater Quality Improvement Project ATTACHMENT B Project Plans CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: G-101 TITLE SHEETPLOTTED: 4/1/2025 5:39 PM BY: sandra zaffG-101 1 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 TITLE SHEET N REV DESCRIPTION DSN CHK DATEDWN APP GAA SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 0 SCALE IN FEET 1000 2000 SCALE: 1" = 1000' NOT FOR CONSTRUCTION OLD SHORE ROAD STORMWATER QUALITY IMPROVEMENT PROJECT TOWN OF BARNSTABLE, MA INDEX OF SHEETS G-101 TITLE SHEET G-102 GENERAL NOTES AND LEGEND C-101 EXISTING CONDITIONS C-102 SITE PLAN C-103 WATERSHED MAP C-301 STORMWATER BMP PLAN & PROFILE C-501 DETAILS - 1 OF 3 C-502 DETAILS - 2 OF 3 C-503 DETAILS - 3 OF 3 P-1 PLANTING DETAIL EX-1 EXISTING CONDITIONS PLAN THIS PROJECT DESIGN HAS BEEN PREPARED FOR THE TOWN OF BARNSTABLE WITH SPONSORSHIP FROM NATURAL RESOURCES CONSERVATION SERVICE AND CAPE COD CONSERVATION DISTRICT. THIS DESIGN IS IN CONFORMANCE WITH NRCS-MA CPS 342 AND 570. PROJECT SITE 1 BEACON STREET, STE 8100 BOSTON, MA 02108 NOI SUBMITTAL NOI SUBMITTAL 4/2/2025 CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: G-102 LEGEND SHEET PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff G-102 2 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 GENERAL NOTES AND LEGEND REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. REVISIONS 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 NOT FOR CONSTRUCTION COUPLING BACKWASH WASTE EXISTING LEGEND CHAIN LINK FENCE DUCTILE IRON STANDPIPE ELECTRIC LINE UTILITY POLE TRANSFORMER GUY WIRE RECORD GAS LINES GAS METER WETLAND LIMIT WETLAND FLAG OVERHEAD WIRES CHAINLINK FENCE SOIL PROBE TREELINE CONCRETE PAD EDGE OF PAVEMENT ABANDONED/REMOVED WATER LINE ELECTRIC MANHOLE PROPOSED LEGEND SEWER LINE DRAIN LINE DRAIN LINE SEWER LINE SEWER MANHOLES WATER LINE PROPOSED WATER GATE VEHICULAR ACCESS GATE PROPOSED TREELINE CHAIN LINK FENCE EDGE OF PAVEMENT LINE EDGE OF WATER RAW WATER LINERW CONCRETE GAS LINE ELECTRIC LINE DRAIN MANHOLE CATCH BASIN PROPOSED CONTOUR19 RIPRAP STRAW WATTLE SP CLF CP DI EOP GM E SP SPOT GRADE129.9 GENERAL NOTES: 1. PRIOR TO BIDDING THE PROJECT, THE CONTRACTOR IS ENCOURAGED TO VISIT THE SITE TO VERIFY EXISTING CONDITIONS. 2. THE DATA ACCUMULATION AND BOUNDARY SURVEY DEPICTED HERE WERE OBTAINED BY A FIELD SURVEY PERFORMED DURING SEPTEMBER 2023 BY THE TOWN OF BARNSTABLE. THE COORDINATES OF THE SURVEY ARE IN FEET AND ARE BASED UPON THE NORTH AMERICAN DATUM OF 1983 MASSACHUSETTS STATE PLANE (NAD '83 MASSACHUSETTS STATE PLANE, MAINLAND ZONE). THE ELEVATIONS OF THE SURVEYS ARE IN FEET AND REFER TO NORTH AMERICAN VERTICAL DATUM OF 1988 (NAVD '88). 3. THE WETLANDS WERE DELINEATED IN MARCH 2024 BY CRAWFORD LAND MANAGEMENT. 4. THE CONTRACTOR SHALL CALL THE DIG-SAFE CENTER AT 1-888-344-7233 A MINIMUM OF 72 HOURS PRIOR TO ANY EXCAVATION TO LOCATE UNDERGROUND UTILITIES IN THE FIELD AND NOTIFY UTILITIES OF CONSTRUCTION. 5. INFORMATION SHOWN ON THE DRAWINGS RELATING TO MATERIALS, CONDITIONS AND/OR LOCATIONS OF EXISTING STRUCTURES AND UTILITIES HAS BEEN COMPILED FROM AVAILABLE INFORMATION INCLUDING FIELD SURVEY, AERIAL PHOTOGRAPHY, RECORD MAPS AND DRAWINGS, AND UTILITY RECORD DRAWINGS AND IS NOT GUARANTEED CORRECT OR COMPLETE. IT IS THE CONTRACTOR'S RESPONSIBILITY TO VERIFY EXISTING CONDITIONS AND DIMENSIONS INCLUDING THE LOCATION AND DEPTH OF ALL UTILITIES PRIOR TO BEGINNING CONSTRUCTION. LOCATIONS AND DEPTHS OF CRITICAL UTILITIES SHALL BE VERIFIED BY THE CONTRACTOR IN THE FIELD BY TEST PITS AS APPROVED BY THE ENGINEER. ANY DAMAGE TO UTILITIES OR PUBLIC/PRIVATE PROPERTY CAUSED BY THE CONTRACTOR SHALL BE THE CONTRACTOR'S RESPONSIBILITY, AND COSTS FOR THE REPAIR OR REPLACEMENT OF SUCH DAMAGED UTILITIES OR PROPERTY SHALL BE BORNE BY THE CONTRACTOR. 6. ACCORDING TO FEMA FIRM (FLOOD INSURANCE RATE MAP) COMMUNITY PANEL 25001C0756J, REVISION DATED 7/16/2014, THE APPROXIMATE 100-YEAR FLOODPLAIN ELEVATION ON THE SITE IS 14 FEET. 7. ACCORDING TO THE RESILIENTMASS ACTION TEAM'S (RMAT) CLIMATE RESILIENCE DESIGN STANDARDS TOOL, THE ELEVATION OF THE 2070 1% ANNUAL CHANCE COASTAL FLOOD STILL WATER LIMIT ELEVATION IS 15.7'. 8. THIS PROJECT REQUIRES NOTICE OF INTENT APPROVAL BY THE BARNSTABLE CONSERVATION COMMISSION. ALL WORK SHALL BE PERFORMED IN ACCORDANCE WITH THE REQUIREMENTS OF THE FINAL ORDER OF CONDITIONS OF THAT PERMIT. SOIL EROSION AND SEDIMENT CONTROL NOTES: 1. APPROPRIATE EROSION AND SEDIMENT CONTROL MEASURES TO COMPLY WITH THE REQUIREMENTS OF THE STORM WATER MANAGEMENT PERMIT SHALL BE INSTALLED PRIOR TO SOIL DISTURBANCE. MEASURES SHALL BE TAKEN TO CONTROL EROSION WITHIN THE PROJECT AREA. SEDIMENT IN RUNOFF WATER SHALL BE TRAPPED AND RETAINED WITHIN THE PROJECT AREA. WETLAND AREAS AND SURFACE WATERS SHALL BE PROTECTED FROM SEDIMENT. 2.CONTRACTOR SHALL MINIMIZE TOTAL AREA OF DISTURBANCE AND PROTECT NATURAL FEATURES AND SOIL. 3. INSTALL AND MAINTAIN ALL EROSION AND SEDIMENT CONTROL MEASURES IN ACCORDANCE WITH THE MANUFACTURER’S SPECIFICATIONS AND/OR IN ACCORDANCE WITH ALL PERMIT REQUIREMENTS, THE MORE STRINGENT REQUIREMENT SHALL APPLY. CONTRACTOR SHALL INSTALL EROSION AND SEDIMENTATION CONTROLS IN ACCORDANCE WITH SPECIFICATIONS AND DETAILS. 4. CONTRACTOR TO COMPLY WITH APPLICABLE FEDERAL, STATE AND LOCAL LAWS AND REGULATIONS INCLUDING WASTE DISPOSAL. 5. CONTRACTOR SHALL PROPERLY MANAGE ON-SITE CONSTRUCTION AND WASTE MATERIALS. 6. CONTRACTOR SHALL IMPLEMENT APPROPRIATE DUST CONTROL MEASURES AT THE SITE. 7. STOCKPILE SIDE SLOPES SHALL NOT BE GREATER THAN 1:1. ALL STOCKPILES SHALL BE SURROUNDED BY SEDIMENT CONTROLS. 8. A VEHICLE TRACKING PAD OR OTHER APPROVED STABILIZATION METHOD SHALL BE CONSTRUCTED AT ALL ENTRANCE/EXIT POINTS OF THE SITE TO PREVENT SOIL CARRIED ONTO ROADWAYS AND OFF THE SITE. CONTRACTOR SHALL FURNISH A MECHANICAL SWEEPER ON SITE FOR THE PURPOSE OF SWEEPING ALL PAVED AREAS ON A DAILY BASIS OR AS REQUIRED TO PREVENT SOIL TRACKING ON ROADWAYS. 9. ALL PREVIOUSLY DISTURBED LAND SHALL BE STABILIZED BY APPROVED METHODS WITHIN 14 DAYS IF LEFT UNDISTURBED. THIS INCLUDES STOCKPILES, CONSTRUCTION ENTRANCES, GRADED AREAS AND OTHER CONSTRUCTION ACTIVITY RELATED CLEARING 10. PERMANENT SEEDING SHALL BE UNDERTAKEN IN THE SPRING FROM APRIL 15 THROUGH JUNE 1, AND IN LATE SUMMER AND EARLY FALL FROM AUGUST 15 THROUGH NOVEMBER 1. DURING THE PEAK SUMMER MONTHS AND IN THE FALL AFTER NOVEMBER 1, WHEN SEEDING IS FOUND TO BE IMPRACTICAL, APPROPRIATE TEMPORARY STABILIZATION SHALL BE APPLIED. PERMANENT SEEDING MAY BE UNDERTAKEN DURING THE SUMMER IF PLANS PROVIDE FOR ADEQUATE MULCHING AND WATERING. IN ACCORDANCE WITH SPECIFICATION SECTION 02480, THE PLANTING AREA WILL BECOME ACCEPTABLE IF THE GRASS AND SEED MIXTURES SHOW A UNIFORM, THICK, AND WELL-DEVELOPED GROWTH. IF AN INSUFFICIENT PERCENTAGE OF GRASS ESTABLISHES, THE CONTRACTOR WILL NEED TO RESEED AT THEIR OWN EXPENSE. 11. IF WORK IS HALTED OVER WINTER MONTHS THE CONTRACTOR SHALL BE RESPONSIBLE FOR STABILIZING THE AREA THROUGH STRUCTURAL STABILIZATION PRACTICES AS DESCRIBED WITHIN THE MASSDEP 'MASSACHUSETTS EROSION AND SEDIMENT CONTROL GUIDELINES FOR URBAN AND SUBURBAN AREAS' GUIDE. THESE MEASURES INCLUDE, BUT ARE NOT LIMITED TO, HAY BALES, SILT FENCES, ANCHORED MULCH, AND/OR EROSION CONTROL BLANKETS. AREA OF CONTRIBUTING IMPERVIOUS SURFACES CAPE COD BERMCCB 1 BEACON STREET, STE 8100 BOSTON, MA 02108 CONCRETE BOUND FOUND DRAIN MANHOLE ELECTRIC HAND HOLE GUY POLE FIRE HYDRANT WOOD POST LARGE ROCK (BOULDER) SIGN DECIDUOUS TREE CONIFEROUS TREE UTILITY POLE WATER GATE PICKET FENCE STOCKADE FENCE LANDSCAPE AREA EDGE OF POND UNDERGROUND ELECTRIC LINE GAS LINE STONEWALL 100YR FEMA FLOOD PLAIN 1' CONTOUR (BARNSTABLE DPW) SPOT GRADE (BARNSTABLE DPW) OCEAN WATER LINE LOCATED STORM DRAIN WATER LINE 100 FT WETLAND BUFFER100' WB 50 FT WETLAND BUFFER50' WB BVW WETLAND LINE SOIL TEST PIT SUBSURFACE SYSTEM CHAMBERS NO PARKING AREA STRUCTURED PERVIOUS GRAVEL PAVING 2070 1% COASTAL FLOOD STILL WATER LIMIT POTENTIAL STAGING AREA LIMIT OF DISTURBANCE 4/2/2025 G G D GGWW50' WB50' WB50' WB 50' WB50' WB50' WB50' WB 5 0 ' W B 5 0 ' W B 25 30 3540 262728 2929 31 32 33 34 36 37 38 39 41 20 2 0 2 5 3 0 354021 22 23 24 2 6 27 2 8 2 9 3 1 3 2 33 3436 37 3 8 39415101520 6789111213141617181921222324 2025303516171819212223242627282931323334363738 51 0 1 5 2 0 3467891 1 1 21314 1 6 17 18 1 9 2 1 2 2 232 4 APPROX. LOCATION OF TEST PIT 1 (1988) APPROX. LOCATION OF TEST PIT 2 (1988) BARNSTABLE DPW SURVEY LIMITS BARNSTABLE DPW SURVEY LIMITS BARNSTABLE D P W S U R V E Y L I M I T S B A R N S T A B L E D PW S U R V E Y L IM I T S APPROX. LOCATION OF TEST HOLE 1 (1983)CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-101 EXISTING CONDITIONS PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff C-101 3 11 APRIL 2025 - MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 EXISTING CONDITIONS N REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 0 SCALE IN FEET 20 40 SCALE: 1" = 20' 0 ELEV. 27.0'± 1 ELEV. 26.0'± 2 3 4 5 6 7 8 9 10 ELEV. 17.0'± TOP/SUBSOIL MEDIUM - COARSE SAND BOTTOM OF HOLE NO WATER ENCOUNTERED 0 ELEV. 13.0'± 1 ELEV. 12.0'± 2 3 4 5 6 7 ELEV. 6.0'± NO WATER ENCOUNTERED TOP/SUBSOIL BOTTOM OF HOLE MEDIUM - COARSE SAND 1988 TEST PIT DATA TP 2TP 1 1 BEACON STREET, STE 8100 BOSTON, MA 02108 ENVIRONMENTAL NOTES: 1. SITE IS NOT WITHIN AN A.C.E.C. (AREA OF CRITICAL ENVIRONMENTAL CONCERN). 2. SITE IS NOT WITHIN AN AREA OF ESTIMATED HABITAT OF RARE WILDLIFE PER NHESP MAP AUGUST 1, 2021 "ESTIMATED HABITATS OF RARE WILDLIFE" FOR USE WITH THE MA WETLANDS PROTECTION ACT REGULATIONS (310 CMR 10)." 3. SITE DOES NOT CONTAIN A CERTIFIED VERNAL POOL PER NHESP MAP AUGUST 1, 2021 "CERTIFIED VERNAL POOLS." 4. SITE IS NOT WITHIN A PRIORITY HABITAT PER NHESP MAP AUGUST 1, 2021 "PRIORITY HABITATS OF RARE SPECIES" FOR SPECIES UNDER THE MASSACHUSETTS ENDANGERED SPECIES ACT, REGULATIONS (321 CMR10). 5. SITE IS NOT LOCATED WITHIN A STATE APPROVED ZONE II GROUND WATER RECHARGE PROTECTION AREA. 6. LIMIT OF COASTAL BANK HAS NOT BEEN INVESTIGATED OR SHOWN FOR THE PURPOSE OF THIS PLAN. 7. WETLAND RESOURCE AREAS WERE DELINEATED BY CRAWFORD LAND MANAGEMENT DURING MARCH OF 2024 AND FIELD LOCATED BY THE TOWN OF BARNSTABLE DPW SURVEY SECTION. FLOOD NOTE: BY GRAPHIC PLOTTING ONLY, THIS PROJECT AREA IS LOCATED IN ZONE "X" AND ZONE VE EL.14 OF THE FLOOD INSURANCE RATE MAP, AS SHOWN ON COMMUNITY MAP No. 25001C0756J, WHICH BEARS AN EFFECTIVE DATE OF JULY 16, 2014 AND PORTIONS OF THIS PROJECT ARE WITHIN A SPECIAL FLOOD HAZARD AREA. PORTIONS OF THE PROJECT AREA ARE ALSO LOCATED WITHIN COASTAL BARRIER RESOURCE AREA ESTABLISHED NOVEMBER 16, 1990. GENERAL NOTES: 1. TOPOGRAPHIC AND DETAIL INFORMATION SHOWN HEREON IS BASED UPON AN ON THE GROUND SURVEY PERFORMED BY TOWN OF BARNSTABLE DPW SURVEY SECTION DURING SEPTEMBER OF 2023, AUGMENTED BY LIDAR CONTOURS RETRIEVED FROM MASSGIS "MASSMAPPER" DURING MAY OF 2024. CONTOUR DATA DATED 2021. 2. ALL ELEVATIONS ARE BASED ON THE NORTH AMERICAN VERTICAL DATUM OF 1988. 3. SUBJECT SITE IS IN THE RF-DISTRICT, THE AP-AQUIFER PROTECTION OVERLAY DISTRICT, THE DOCK AND PIER OVERLAY DISTRICT AND RESOURCE PROTECTION OVERLAY DISTRICT AS DEPICTED ON THE TOWN OF BARNSTABLE ZONING MAP. 4. EXISTING UTILITIES, WHERE SHOWN, HAVE BEEN COMPILED BASED ON OBSERVED ABOVE GROUND EVIDENCE AND AVAILABLE RECORD PLANS AND ARE TO BE CONSIDERED APPROXIMATE. BARNSTABLE DPW DOES NOT GUARANTEE THE LOCATION OF THE UNDERGROUND UTILITIES SHOWN OR THAT ALL EXISTING UTILITIES AND/OR SUBSURFACE STRUCTURES ARE SHOWN. 5. ABUTTING SEPTIC SYSTEMS, IRRIGATION LINES, HEADS AND PRIVATE ELECTRICAL LINES HAVE NOT BEEN INVESTIGATED OR SHOWN FOR THE PURPOSE OF THIS PLAN. 6. SOILS INFORMATION PROVIDED ON THIS PLAN IS FROM RECORD BARNSTABLE BOARD OF HEALTH FILES. 1983 TEST HOLE DATA 0 ELEV. 8.3'± 1 ELEV. 7.3'± 2 3 4 5 6 7 ELEV. 0.8'± LOAM/SUBSOIL MEDIUM SAND BOTTOM OF HOLE TH 1 WATER ELEV. 1.8'± NBR/SLZ NBR/SLZ 4/2/2025 DGGGGWWWW50' WB50' WB50' WB50' WB50' WB 50' WB 50' WB50' WB50' WB50' WB50' WB50' WB 5 0 ' WB 5 0 ' W B 50' W B 50' W B 50' W B 50' W B 50' W B 8.00' NO PARKING AREA TO BE PLANTED WITH NATIVE BUSHES (SEE LANDSCAPE PLAN) CONTRACTOR TO INSTALL TEMPORARY CONSTRUCTION FENCE FOR PLANT ESTABLISHMENT THROUGH FIRST SEASON PARKING AREA TO BE RESURFACED WITH STRUCTURED PERVIOUS GRAVEL PAVING AREA = 461 SF WQV = 39 CF STORAGE VOLUME = 92 CF EAST SUBSURFACE SYSTEM BOTTOM STONE ELEV = 6.00' SYSTEM VOLUME = 256 CF DMH 1 (4' DIA.) APPROX. LOCATION OF TEST PIT 1 (1988) APPROX. LOCATION OF TEST PIT 2 (1988) MATCH EXISTING REMOVE AND DISPOSE PAVEMENT WITHIN LIMITS OF SAWCUT. REPAVE WITH BITUMINOUS CONCRETE PAVEMENT AND CAPE COD BERM (SEE DETAILS) SURFACE AREA = 2400 SF 8" PIPE INVERT = 7.25' 8" PIPE INVERT = 6.50' LEACHING DRAIN MANHOLE 1 (6' DIA.) VOLUME = 189 CF FULL DEPTH SAWCUT (TYP.) FULL DEPTH SAWCUT (TYP.) VACCUUM CLEAN ALL EXISTING CATCH BASINS, LEACHING PITS, AND PIPES. REPLACE MANHOLE FRAMES AND COVERS AND REPLACE CATCH BASIN GRATES WITH CASCADE GRATES. WEST SUBSURFACE SYSTEM BOTTOM STONE ELEV: 9.00' SYSTEM VOLUME = 256 CF 2.5 LF 24"Ø SOLID WALL HDPE @ 2.00% (MIN.) CAPE COD BERM (TYP.) (SEE DETAIL SHEET C-503) CB 2 (6' DIA.) CB 1 (6' DIA.) EROSION CONTROL SEE NOTE 1. 11 LF 8"Ø SOLID WALL HDPE @ ±1.48% 19 LF 8"Ø SOLID WALL HDPE @ ±4.50% 7 LF 8"Ø SOLID WALL HDPE @ ±3.00% 2 LF 24"Ø SOLID WALL HDPE @ 1.00% (MIN.) APPROX. LOCATION OF TEST HOLE 1 (1983) POTENTIAL STAGING AREA .......R10' R3.3' R4.5' R4.0' CAPE COD BERM (TYP.) (SEE DETAIL SHEET C-503) BRICK WALK TO REMAIN UNDISTURBED EXISTING TREE TO BE PROTECTED THROUGHOUT CONSTRUCTION CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-102 SITE PLAN PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff C-102 4 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 SITE PLAN N REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 0 SCALE IN FEET 10 20 SCALE: 1" = 10' NOT FOR CONSTRUCTION SYSTEM WQV (CF) STORAGE (CF) STORAGE (% OF WQV) SUBSURFACE SYSTEM (WEST)240 259 108% SUBSURFACE SYSTEM (EAST)244 259 106% LEACHING BASIN 172 189 110% 1 BEACON STREET, STE 8100 BOSTON, MA 02108 NOTE: 1. EROSION CONTROL MEASURES ARE LOCATED OUTSIDE OF THE MAIN WORK AREA AS THEY CAN NOT BE INSTALLED IN PAVEMENT. 4/2/2025 G G G D GGWW50' WB50' WB50' WB 50' WB50' WB50' WB 5 0 ' W B 50' W B 50' W B 2530354026272829293132333436373839414243 20 20 25 30 35 4 0 21 22 23 24 26 27 28 29 31 32 33 34 36 37 38 39 4 1 51015206789111213141617181921222324 2025303540161718192122232426272829313233343637383941510 15 20 346 7 8 9 11 12 13 14 16 17 1819 21 22 23 24 WATERSHED (TYP.) CB-2 WATERSHED TOTAL AREA = 30,440 SF DIRECTLY CONNECTED IMPERVIOUS AREA = 2925 SF WQV = 244 CF CB-1 WATERSHED TOTAL AREA = 37,230 SF DIRECTLY CONNECTED IMPERVIOUS AREA = 2,880 SF WQV = 240 CF TOTAL CONTRIBUTING IMPERVIOUS AREA = 7,873 SF WQV = 656 CF LD-1 WATERSHED TOTAL AREA = 11,124 SF DIRECTLY CONNECTED IMPERVIOUS AREA = 2075 SF WQV = 172 CF CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-103 WATERSHED MAPPLOTTED: 4/1/2025 5:39 PM BY: sandra zaffC-103 5 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 WATERSHED MAP N REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 0 SCALE IN FEET 20 40 SCALE: 1" = 20' NOTES: 1. LIDAR CONTOURS RETRIEVED FROM MASSGIS "MASSMAPPER" MAY 2024. CONTOUR DATA DATED 2021. 2. GROUND SURVEY DATA SHOWN WAS CAPTURED BY THE TOWN OF BARNSTABLE IN OCTOBER 2023. 3. ALL ELEVATIONS ARE BASED ON NAVD 88. NOT FOR CONSTRUCTION 1 BEACON STREET, STE 8100 BOSTON, MA 02108 4/2/2025 8" HDPE Pipe @ 1.48% 24" HDPE Pipe @ 2.12% 24" HDPE Pipe @ 2.66% EX. 6" HDPE Pipe UNKNOWN INV. ELEV. 8" HDPE Pipe @ 4.48% 8" HDPE Pipe @ 2.66% EX. 6" HDPE Pipe UNKNOWN INV. ELEV. EX. 12" HDPE Pipe UNKNOWN INV. ELEV. CB 1 (6' DIA.) RIM ELEV. = 15.21' 24" PIPE INVERT = 11.01' CB 2 (6' DIA.) RIM ELEV. = 14.78' 12" PIPE INVERT = 10.50' DMH 1 (4' DIA.) RIM ELEV. = 13.77' 12" PIPE INVERT = 10.25' 24" PIPE INVERT = 7.10' EX. DRAIN MANHOLE RESET RIM = 11.20' PIPE INVERT = UNKNOWN EX. DRAIN MANHOLE RESET RIM = 10.80' PIPE INVERT = UNKNOWN EX. CATCH BASIN (SOUTH) RESET RIM = 10.50' (NEW) 8" PIPE INVERT = 7.25' (EX.) 12" PIPE INVERT = 6.72' EX. LEACHING PIT RESET RIM = 10.40' PIPE INVERTS UNKNOWN EX. CATCH BASIN (NORTH) RESET RIM = 10.10' (NEW) 8" PIPE INVERT = 6.50' (EX.) 12" PIPE INVERT = 6.73' LEACHING DRAIN MANHOLE 1 (6' DIA.) RIM ELEV. = 9.48' 8" PIPE INVERTS = 6.15' EAST SUBSURFACE SYSTEM BOTTOM STONE ELEV. = 6.00' SEE DETAIL C-501 EX. GROUND WEST SUBSURFACE SYSTEM BOTTOM STONE ELEV. = 9.00' SEE DETAIL C-501 EX. WATER SERVICE (APPROXIMATE) SHWT ± 1.8' BOTTOM OF LEACHING SECTION & STONE = 4.00' MIN. PROP. GROUND INVERT = 7.01 INVERT = 10.01 DGGGGWWWW50' WB50' WB50' WB 50' WB 50' WB 50' WB50' WB50' WB50' WB50' WB50' WB50' WB 20 2 0 21 22 23 20161718192122 23 51 0 1 5 34678 9 1 1 1 21314 1 6 17 0+00 1+00 1+50 19 1 8 1 7 1 6 151413121110991087 MINIMUM ROADWAY CROSS SLOPE = 1% MINIMUM ROADWAY CROSS SLOPE = 1%17%14% 8% 4% 7% 7% 6% 6%CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-301 PROFILE PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff C-301 6 11 APRIL 2025 - NBR/SLZ SLZ - 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 STORMWATER BMP PLAN & PROFILE N REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. REVISIONS 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 0 SCALE IN FEET 10 20 SCALE: 1" = 10' NOT FOR CONSTRUCTION 1 BEACON STREET, STE 8100 BOSTON, MA 02108 SCALE: 1"=10' PLAN HORIZONTAL VERTICAL SCALE: 1"=5' SCALE: 1"=10' PROFILE 4/2/2025 NOT FOR CONSTRUCTION ACCEPTABLE FILL MATERIALS: STORMWATER CHAMBER SYSTEMS PLEASE NOTE: 1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: "CLEAN, CRUSHED, ANGULAR NO. 4 (AASHTO M43) STONE". 2. STORMTECH COMPACTION REQUIREMENTS ARE MET FOR 'A' LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 6" (150 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR. 3. WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LOAD DESIGNS, CONTACT STORMTECH FOR COMPACTION REQUIREMENTS. 4. ONCE LAYER 'C' IS PLACED, ANY SOIL/MATERIAL CAN BE PLACED IN LAYER 'D' UP TO THE FINISHED GRADE. 5. WHERE RECYCLED CONCRETE AGGREGATE IS USED IN LAYERS 'A' OR 'B' THE MATERIAL SHOULD ALSO MEET THE ACCEPTABILITY CRITERIA OUTLINED IN TECHNICAL NOTE 6.20 "RECYCLED CONCRETE STRUCTURAL BACKFILL". NOTES: 1. CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418, "STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 2. CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 3. PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 4. REQUIREMENTS FOR HANDLING AND INSTALLATION: ·TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS. ·TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 2”. ·TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION, a) THE ARCH STIFFNESS CONSTANT SHALL BE GREATER THAN OR EQUAL TO 550 LBS/FT/%. THE ASC IS DEFINED IN SECTION 6.2.8 OF ASTM F2418. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73° F / 23° C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. MATERIAL LOCATION DESCRIPTION AASHTO MATERIAL CLASSIFICATIONS COMPACTION / DENSITY REQUIREMENT D FINAL FILL: FILL MATERIAL FOR LAYER 'D' STARTS FROM THE TOP OF THE 'C' LAYER TO THE BOTTOM OF FLEXIBLE PAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THAT PAVEMENT SUBBASE MAY BE PART OF THE 'D' LAYER. ANY SOIL/ROCK MATERIALS, NATIVE SOILS, PER PLANS. CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS.N/A PREPARE PER PLANS. PAVED INSTALLATIONS MAY HAVE STRINGENT MATERIAL AND PREPARATION REQUIREMENTS. C INITIAL FILL: FILL MATERIAL FOR LAYER 'C' STARTS FROM THE TOP OF THE EMBEDMENT STONE ('B' LAYER) TO 18" (450 mm) ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT SUBBASE MAY BE A PART OF THE 'C' LAYER. GRANULAR WELL-GRADED SOIL/AGGREGATE MIXTURES, <35% FINES OR PROCESSED AGGREGATE. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS LAYER. AASHTO M145¹ A-1, A-2-4, A-3 OR AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57, 6, 67, 68, 7, 78, 8, 89, 9, 10 BEGIN COMPACTIONS AFTER 12" (300 mm) OF MATERIAL OVER THE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN 6" (150 mm) MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FOR WELL GRADED MATERIAL AND 95% RELATIVE DENSITY FOR PROCESSED AGGREGATE MATERIALS. ROLLER GROSS VEHICLE WEIGHT NOT TO EXCEED 12,000 lbs (53 kN). DYNAMIC FORCE NOT TO EXCEED 20,000 lbs (89 kN). B EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS FROM THE FOUNDATION STONE ('A' LAYER) TO THE 'C' LAYER ABOVE. CLEAN, CRUSHED, ANGULAR STONE OR RECYCLED CONCRETE5 AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57 NO COMPACTION REQUIRED. A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER. CLEAN, CRUSHED, ANGULAR STONE OR RECYCLED CONCRETE5 AASHTO M43¹ 3, 357, 4, 467, 5, 56, 57 PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE.2,3 18" (450 mm) MIN* 8' (2.4 m) MAX12" D C B A 12" (300 mm) MIN 12" (300 mm) TYP51" (1295 mm) 30" (760 mm) 12" *TO BOTTOM OF FLEXIBLE PAVEMENT. PAVEMENT LAYER SC-740 END CAP OR SIMILAR EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) PERIMETER STONE (SEE NOTE 4) SUBGRADE SOILS (SEE NOTE 3) ALL STUBS, EXCEPT FOR THE SC740ECEZ ARE PLACED AT BOTTOM OF END CAP SUCH THAT THE OUTSIDE DIAMETER OF THE STUB IS FLUSH WITH THE BOTTOM OF THE END CAP. FOR ADDITIONAL INFORMATION CONTACT STORMTECH AT 1-800-821-6710. * FOR THE SC740ECEZ THE 24" (600 mm) STUB LIES BELOW THE BOTTOM OF THE END CAP APPROXIMATELY 1.75" (44 mm). BACKFILL MATERIAL SHOULD BE REMOVED FROM BELOW THE N-12 STUB SO THAT THE FITTING SITS LEVEL. NOTE: ALL DIMENSIONS ARE NOMINAL NOMINAL CHAMBER SPECIFICATIONS SIZE (W X H X INSTALLED LENGTH)51.0" X 30.0" X 85.4" (1295 mm X 762 mm X 2169 mm) CHAMBER STORAGE 45.9 CUBIC FEET (1.30 m³) MINIMUM INSTALLED STORAGE*74.9 CUBIC FEET (2.12 m³) WEIGHT 75.0 lbs.(33.6 kg) NOMINAL END CAP SPECIFICATIONS SIZE (W X H X INSTALLED LENGTH)45.9" X 29.3" X 9.6" (1166 mm X 744 mm X 244 mm) END CAP STORAGE 2.6 CUBIC FEET (0.07 m³) MINIMUM INSTALLED STORAGE**13.5 CUBIC FEET (0.38 m³) WEIGHT 11.7 lbs.(5.3 kg) * ASSUMES 6" (152 mm) STONE ABOVE, BELOW, AND BETWEEN CHAMBERS **ASSUMES 6" (152 mm) STONE ABOVE AND BELOW END CAPS, 12" (305 mm) BEYOND END CAPS TECHNICAL SPECIFICATION: STORMWATER CHAMBER NTS 90.7" (2304 mm) ACTUAL LENGTH 85.4" (2169 mm) INSTALLED LENGTH BUILD ROW IN THIS DIRECTION 51.0" (1295 mm) 30.0" (762 mm) 45.9" (1166 mm)12.2" (310 mm) 29.3" (744 mm) OVERLAP NEXT CHAMBER HERE (OVER SMALL CORRUGATION) START END PART #STUB A B SC740ECEZ*24" (600 mm) 18.5" (470 mm) 0.1" (3 mm) A B END CAP SC-740 CHAMBER OR SIMILAR ONE LAYER OF ADSPLUS625 WOVEN GEOTEXTILE (OR SIMILAR) BETWEEN FOUNDATION STONE AND CHAMBERS 5' (1.5 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS 24" (600 mm) HDPE ACCESS PIPE REQUIRED USE EZ END CAP PART #: SC740ECEZ OR SIMILAR INSTALL FLAMP ON 24" (600 mm) ACCESS PIPE PART#: SC74024RAMP INSPECTION & MAINTENANCE STEP 1) INSPECT ISOLATOR ROW PLUS FOR SEDIMENT A. INSPECTION PORTS (IF PRESENT) A.1. REMOVE/OPEN LID ON NYLOPLAST INLINE DRAIN A.2. REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3. USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG A.4. LOWER A CAMERA INTO ISOLATOR ROW PLUS FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) A.5. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B. ALL ISOLATOR PLUS ROWS B.1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW PLUS B.2. USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW PLUS THROUGH OUTLET PIPE i) MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY ii) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE B.3. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. STEP 2) CLEAN OUT ISOLATOR ROW PLUS USING THE JETVAC PROCESS A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" (1.1 m) OR MORE IS PREFERRED B. APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN C. VACUUM STRUCTURE SUMP AS REQUIRED STEP 3) REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4) INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. ISOLATOR ROW PLUS (SEE DETAIL) PROPOSED LAYOUT EAST 2 STORMWATER CHAMBERS 2 CHAMBER END CAPSSTONE ABOVE (in) STONE BELOW (in) 40 256 INSTALLED SYSTEM VOLUME (CF) (PERIMETER STONE INCLUDED) (COVER STONE INCLUDED) (BASE STONE INCLUDED) 111 SYSTEM AREA (SF) 48.2 SYSTEM PERIMETER (ft) 2 TECHNICAL SPECIFICATION PROPOSED LAYOUT EAST ISOLATOR ROW PLUS DETAIL A C B PROPOSED LAYOUT WEST PROPOSED LAYOUT WEST 2 STORMWATER CHAMBERS 2 CHAMBER END CAPS 12 STONE ABOVE (in) 12 STONE BELOW (in) 40 STONE VOID (%) 256 INSTALLED SYSTEM VOLUME (CF) (PERIMETER STONE INCLUDED) (COVER STONE INCLUDED) (BASE STONE INCLUDED) 111 SYSTEM AREA (SF) 48.2 SYSTEM PERIMETER (ft) NOTE: APPROVED EQUAL ACCEPTABLE FOR CONSTRUCTION. STORMTECH SYSTEM SC-740 SPECIFICATIONS PROVIDED AS EXAMPLE ELEVATIONS (ft): TOP OF PAVEMENT:±12.00-13.50TOP OF STONE:10.00 TOP OF STORMWATER CHAMBER: 24" ISOLATOR ROW PLUS INVERT:7.01 BOTTOM OF STORMWATER CHAMBER:7.00 BOTTOM OF STONE:6.00 INVERT*DESCRIPTIONITEM ON LAYOUTPART TYPE 0.10"24" BOTTOM PREFABRICATED EZ END CAP, OR SIMILAR / TYP OF ALL 24" BOTTOM CONNECTIONS AND ISOLATOR PLUS ROWSA INSTALL FLAMP ON 24" ACCESS PIPEBFLAMP 4' DIAMETER PRECAST CONCRETE STORMWATER MANHOLE (SEE DETAIL ON SHEET C-502)CINLET W/ ISO PLUS ROW *INVERT ABOVE BASE OF CHAMBER ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEAN, CRUSHED, ANGULAR STONE IN A & B LAYERS3 9.50 ELEVATIONS (ft): TOP OF PAVEMENT:±15.50-17.50TOP OF STONE:13.00 TOP OF STORMWATER CHAMBER: 24" ISOLATOR ROW PLUS INVERT:10.01 BOTTOM OF STORMWATER CHAMBER:10.00 BOTTOM OF STONE:9.00 INVERT*DESCRIPTIONITEM ONLAYOUTPART TYPE 0.10"24" BOTTOM PREFABRICATED EZ END CAP, OR SIMILAR / TYP OF ALL 24" BOTTOM CONNECTIONS AND ISOLATOR PLUS ROWSAPREFABRICATED EZ END CAP OR SIMILAR INSTALL FLAMP ON 24" ACCESS PIPEBFLAMP 6' DIAMETER PRECAST CONCRETE CATCH BASIN (SEE DETAIL ON SHEET C-502)CINLET W/ ISO PLUS ROW *INVERT ABOVE BASE OF CHAMBER 12.50 A C B 4.25'16.23'6.25'17.98' 12 12 NOTES 1. INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. BED LIMITS 18" (450 mm) MIN* 8' (2.4 m) MAX 12" D C B A 12" (300 mm) MIN12" (300 mm) TYP 51" (1295 mm) 30" (760 mm) 12" *TO BOTTOM OF FLEXIBLE PAVEMENT. PAVEMENT LAYER SC-740 END CAP OR SIMILAR EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) PERIMETER STONE (SEE NOTE 4) SUBGRADE SOILS (SEE NOTE 3) ADS GEOSYNTHETICS 601T NON-WOVEN GEOTEXTILE ALL AROUND CLEAN, CRUSHED, ANGULAR STONE IN A & B LAYERS CROSS SECTION DETAILS1 EAST SYSTEMWEST SYSTEM4.25'16.23'6.25'17.98' ±10.00' ±9.00' ±7.00' ±6.00' PREFABRICATED EZ END CAP OR SIMILAR STONE VOID (%)CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-501 DETAILS PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff C-501 7 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 DETAILS - 1 OF 3 REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. REVISIONS 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 NTS 1 BEACON STREET, STE 8100 BOSTON, MA 02108 4/2/2025 UNDISTURBED TRENCH MATERIAL PAY LIMIT FOR EXCAVATION PIPE DIAMETER DETAILSECTION UNDER PAVEMENT LOAM AND SEED 4" MIN. SEE NOTE 2 SEE PAVEMENTBASE SECTION UNDER GRASS 6"MIN.TRENCH WIDTH (SEE NOTE 1)MIN. DEPTH5' WITHOUTINSULATIONREPAVE AS REQUIRED (SEE PAVEMENT DETAIL) BACKFILL: SUITABLE EXCAVATED MATERIAL, COMMON FILL AS SPECIFIED. THOROUGHLY COMPACT WITH RAM OR PNEUMATIC TAMPER. SUITABLE EXCAVATED BACKFILL: MATERIAL, SAND OR GRAVEL AS SPECIFIED. COMPACT IN 12" LAYERS. STRUCTURAL BACKFILL BEDDING REPLACE EXCAVATED UNSUITABLE MATERIAL WITH CRUSHED STONE. DEPTH SHALL BE AS DIRECTED BY ENGINEER. IN TRENCH DIMENSIONS SHALL BE AS FOLLOWS: FOR PIPE LESS THAN OR EQUAL TO 12 INCHES IN DIAMETER, ALLOWABLE TRENCH WIDTH AT PLANE 12 INCHES ABOVE PIPE SHALL BE NO MORE THAN 36 INCHES. FOR PIPE GREATER THAN 12 INCHES IN DIAMETER THE ALLOWABLE TRENCH WIDTH SHALL BE EQUAL TO THE PIPE OUTSIDE DIAMETER PLUS 24 INCHES. WHERE NO GRASS OCCURS, MATCH EXISTING MATERIALS AND DEPTHS. PLACE A MINIMUM OF 6" BEDDING SHALL BE WRAPPED WITH FILTER FABRIC IN LOCATIONS WHERE EXISTING SOIL IS CONSIDERED UNSUITABLE BY THE ENGINEER. NOTES: (a) (b) 1. 2. 3. OF GRAVEL. CAST IRON H-20 LOADING CASCADE FRAME & GRATE BRICKS SHALL BE USED FORM GRADE ADJUSTMENTS. FRAME TO BE SET IN FULL BED OF MORTAR. MINIMUM TWO COURSES OF BRICK MASONRY OR REINFORCED CONCRETE GRADE RINGS (11" MAX.) BUTYL RUBBER-BASED SEALANTS OUTSIDE OF PIPE +2" CLEARANCE PROVIDE "V" OPENINGS WITH RESILIENT STOPS AS SPECIFIED MIN. 0.12 SQ.IN. STEEL PER VERTICAL FOOT. PLACED ACCORDING TO AASHTO DESIGNATION M199 6" MIN. BASE SECTION 24", 30", 36", OR 48" RISER VARY 12" TO 48" STANDARD PRECAST ECCENTRIC OR CONCENTRIC CONE SECTION, OR FLAT TOP (AS REQUIRED) 72"Ø HOOD 8" MIN. 24" SQ. OPENING 1" NOTES: 1. BASE AND JOINTS DETAILS SHALL BE IN ACCORDANCE WITH MASSDOT STANDARDS. 2. PRECAST CONCRETE H-20 LOADING 6' DIAMETER PRECAST CONCRETE CATCH BASIN SCALE: N.T.S. 8" SET CASTING IN GROUT AND GROUT ALL AROUND TO 4" ABOVE FLANGE (UNLESS OTHERWISE NOTED) FINISH GRADE USE CONCRETE ADJUSTING RINGS OR BRICK COURSES AS NEEDED TO BRING MANHOLE RIM TO REQUIRED ELEVATION (MAX. 3 COURSES OF BRICK) SEAL INSIDE AND OUTSIDE WITH BRICK HYDRAULIC CEMENT PRECAST CONCRETE SECTIONS TO CONFORM TO ASTM-478, CONCRETE OF 4000 PSI AT 28 DAYS BASE SECTION 24", 30", 36", OR 48" 8" RISERS 12", 18", 24", 30", 36", OR 48" STANDARD PRECAST ECCENTRIC OR CONCENTRIC CONE SECTION, OR FLAT TOP (AS REQUIRED) 48"Ø 12" MIN. OF 3 4" CRUSHED STONE UNLESS OTHERWISE NOTED REINFORCEMENT (PER ASTM C478) BUTYL RUBBER JOINT (TYP.) SEAL ALL LIFTING HOLE AND INTERIOR/EXTERIOR JOINTS WITH HYDRAULIC CEMENT CAST IRON FRAME AND COVER CAPABLE OF H-20 LOADING TO BE MARKED "DRAIN" SEE DETAIL MANHOLE COVER COAT WITH (2) COATS OF BITUMINOUS DAMPROOFING 4' DIAMETER DRAIN MANHOLE SCALE: N.T.S. 6" MIN. STEP FLOW PLAN A 6" MIN 6'-0" A OUTLET PIPE SECTION 8" (MIN.) 72"Ø INLET PIPES PER PLAN 1'-6" 6" MIN. THICKNESS 12" (MIN.) 3/4" CRUSHED STONE CAST IRON FRAME AND COVER CAPABLE OF H-20 LOADING TO BE MARKED "DRAIN". SEE DETAIL MANHOLE COVERGRADE ADJUSTMENT SHALL BE MADE WITH BRICK OR PRECAST CONCRETE RINGS AS REQUIRED (MIN. 2", MAX. 9", TYP.) SET CASTING IN FULL BED OF MORTAR ALL AROUND TO 2" BELOW FINISHED GRADE BUTYL RUBBER JOINT (TYP) "I" 4" 36" 24" 1-1/2" CRUSHED STONE BACKFILL WITH NATIVE SOIL SHWT ±1.8' "D" FLEXIBLE WATERTIGHT SLEEVE CAST OPENING IN STRUCTURE (TYP) SEAL ALL INTERIOR AND EXTERIOR JOINTS WITH HYDRAULIC CEMENT STANDARD PRECAST BASE GEOTEXTILE FILTER FABRIC (NON-WOVEN) BETWEEN STONE AND EARTH PRECAST CONCRETE INFILTRATION BARREL SECTION W/ 4" TO 1-1/2"Ø TAPERED PERFORATIONS 6' DIAMETER LEACHING DRAIN MANHOLE SCALE: N.T.S. TYPICAL UTILITY TRENCH SCALE: N.T.S. CAST IRON COVER OUTSIDE OF PIPE +2" CLEARANCE PROVIDE "V" OPENINGS WITH RESILIENT STOPS AS SPECIFIED MIN. 0.12 SQ.IN. STEEL PER VERTICAL FOOT. PLACED ACCORDING TO AASHTO DESIGNATION M199 HOOD MINIMUM DEEP SUMP DEPTH = 48"CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-502 DETAILS PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff C-502 8 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 DETAILS - 2 OF 3 REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. REVISIONS 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 NOT FOR CONSTRUCTION NTS 1 BEACON STREET, STE 8100 BOSTON, MA 02108 4/2/2025 4" THICK LOAM COMMON FILL OR EXISTING GRADE COMPACTED SUBGRADE 12" DENSE GRADED CRUSHED STONE 1-1/2" TOP COURSE TACK COAT 2-1/2" BINDER COURSE COMPACTED SAND AND GRAVEL BASE COURSE, DEPTH VARIESCOMPACTED SITE SOILS EXISTING NATURAL GRADE AND SURFACE STRUCTURED PERVIOUS GRAVEL PAVING GRAVEL FILL: 3/16" TO 3/8", HARD, SHARP, WASHED NOTE: VEGETATION MAY CREEP ONTO GRAVELPAVE2 SYSTEM < < STRUCTURED PERVIOUS GRAVEL PAVING SEE ENLARGEMENT BELOW ADJACENT STRUCTURED PERVIOUS GRAVEL PAVING FILTER FABRIC ATTACHED TO BOTTOM OF STRUCTURED PERVIOUS GRAVEL PAVING STRUCTURED PERVIOUS GRAVEL PAVING FILLED WITH 3/16" TO 3/8" ANGULAR GRAVEL, UNIFORM SIZE, WASHED COMPACTED SANDY GRAVEL ROAD BASE - 95% MODIFIED PROCTOR DENSITY - SEE FULL TECHNICAL SPECIFICATIONS FOR COMPOSITION UNITS UNIT SIZE - 50 CM X 50 CM X 2.5 CM OR 1 M X 1 M X 2.5 CM (20" X 20" X 1" OR 40” X 40” X 1”) UNIT WEIGHT - 538 GRAMS (19 OZ.) OR 2.2 KG (4.8 POUNDS) STRENGTH - 1121 KG/CM (15,940 PSI) COLOR - BLACK (STANDARD) RESIN - 100% POST-CONSUMER RECYCLED HDPE FABRIC WEIGHT - 1.4 TO 1.7 OZ/SY(47-58 GM/M ) TENSILE - 120 LB/FT (585 KG/M ) FLOW - 275 GAL/MIN/SF (11,200 L/MIN/M ) SPECIFICATIONS COMPACTED SUBGRADE TOP OF GRAVEL STRUCTURED PERVIOUS GRAVEL PAVING ATTACH WITH SNAP FIT FASTENERS FILTER FABRIC - OVERLAPPING JOINTS FILL RING SECTION WITH 3/16" TO 3/8" ANGULAR GRAVEL, UNIFORM SIZE, WASHED COMPACTED SANDY GRAVEL BASE COURSEENLARGEMENT SECTION VariesAs per loadingrequirements3.3" 0.9" 2.4" 39.4" 6.6"9.8" PLAN NOTE: APPROVED EQUAL ACCEPTIBLE FOR CONSTRUCTION. GRAVELPAVE2 SPECIFICATIONS PROVIDED AS EXAMPLE BITUMINOUS CONCRETE PAVEMENT ROAD SURFACE SCALE: N.T.S. TYPICAL LOAM AND SEED SECTION SCALE: N.T.S. CAPE COD BERM SCALE: N.T.S. STRUCTURED PERVIOUS GRAVEL LANDSCAPE EDGING SCALE: N.T.S. STRUCTURED PERVIOUS GRAVEL PAVING SCALE: N.T.S. NOTE: FOR MODIFIED BERM THE SLOPE REMAINS CONSTANT AT 1 (V) TO 12 (H) 1. THIS DIMENSION VARIES WITH THE THICKNESS OF THE TOP COURSE AND SLOPE OF BINDER 2. SEE E 401.1 FOR TYPICAL SECTION AT GUARDRAIL LOCATIONS 3. SEE TYPICAL SECTIONS FOR PROJECT SUBBASE BASE BINDER SHOULDER TOP COURSE 1 1/4" TO 1 1/2" SLOPE OF SHOULDER 12 MAX SLOPE SLOPE VARIE S ( 3 . ) SURFACE TRE A T M E N T (VARIES) 1 24"12" MINIMUM (2.)VARIESLEVEL 75° CAPE COD BERM (1.)COMPACTED SAND AND GRAVEL BASE COURSE, DEPTH VARIES COMPACTED SITE SOILS ASPHALT CAPE COD BERM STRUCTURED PERVIOUS GRAVEL PAVING GRAVEL FILL: 3/16" TO 3/8", HARD, SHARP, WASHED STRUCTURED PERVIOUS GRAVEL ASPHALT EDGING SCALE: N.T.S. NOTES: 1. BEGIN AT THE LOCATION WHERE THE WATTLE IS TO BE INSTALLED BY EXCAVATING A 2-3" DEEP X 9" WIDE TRENCH ALONG THE CONTOUR OF THE SLOPE. EXCAVATED SOIL SHALL BE PLACED UP-SLOPE FROM THE ANCHOR TRENCH. 2. PLACE THE WATTLE IN THE TRENCH SO THAT IT CONTOURS TO THE SOIL SURFACE. COMPACT THE SOIL FROM THE EXCAVATED TRENCH AGAINST THE WATTLE ON THE UP-HILL SIDE. ADJACENT WATTLES SHOULD TIGHTLY ABUT. 3. SECURE THE WATTLE WITH 36" STAKES EVERY 3-4' WITH A STAKE ON EACH END. STAKES SHALL BE DRIVEN THROUGH THE MIDDLE OF THE WATTLES LEAVING AT LEAST SAMPLE LINE 2-3" OF STAKE EXTENDING ABOVE. THE WATTLE STAKES SHALL BE DRIVEN PERPENDICULAR TO SLOPE FACE. 4. MAX. DRAINAGE AREA ≤ 0.25 ACRES/100 LINEAR FEET. PROJECT LOCATION UNDISTURBED AREA DRIVE STAKE UNTIL 2-3" REMAINS EXPOSED INSTALL STAKE PERPENDICULAR TO SLOPE FACECOMPACT EXCAVATED SOIL ON UP-SLOPE SIDE SET WATTLE IN A 2-3" DEEP TRENCH INSTALL WITH 36" 1"X1" WOOD STAKES 12"Ø MIN. WHEAT OR RICE STRAW-FILLED TUBE OF FLEXIBLE, BIODEGRADABLEJUTE MESH SLOPE STEEPNESS MAXIMUM LENGTH (FT) 2:1 3:1 4:1 75 5:1 OR FLATTER STRAW WATTLE DETAIL SCALE: N.T.S.CAD FILE: \\kleinfelder.com\projects\town Of Barnstable Ma\24004246.001a-barnstable Old Shore Rd St\Working\CAD\Old Shore Production Drawings\Old Shore Road Stormwater.dwg LAYOUT: C-503 DETAILS PLOTTED: 4/1/2025 5:39 PM BY: sandra zaff C-503 9 11 APRIL 2025 - NBR/SLZ NBR/SLZ MPS 24004246.001A TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER PROJECT TOWN OF BARNSTABLE DEPARTMENT OF PUBLIC WORKS 367 MAIN STREET, HYANNIS, MA 02601 DETAILS - 3 OF 3 REV DESCRIPTION DSN CHK DATEDWN APP GAA NOI SUBMITTAL SHEET of DESIGNED BY ISSUE DATE CURRENT REVISION DRAWN BY CHECKED BY PROJECT NO. REVISIONS 1"0 SCALE VERIFICATION THIS BAR IS 1 INCH IN LENGTH ON ORIGINAL DRAWING IF IT'S NOT 1 INCH ON THIS SHEET ADJUST YOUR SCALES ACCORDINGLY APPROVED BY ORIGINAL DRAWING SIZE IS 24 x 36 NOT FOR CONSTRUCTION NTS 1 BEACON STREET, STE 8100 BOSTON, MA 02108 G G G G G G G G G G W W W W W WWWWWOLD SHORE ROAD100 - YEAR FLOODPLANEELEV 15.7(5) MP(3) AM(6) VD(5) MPAPPROX. 700 S.F. +/- PLANTINGAREA TO PROVIDE EROSIONCONTROL & DETER PARKING(3) RV(6) RV(3) AM(8) RV123PLANTING NOTES:SOIL DECOMPACTION:·After construction work is complete, test soils to ensure thatsoils are not overcompacted. Use a penetrometer tocheck soil compaction readings. Acceptable readings arebetween 75 and 250 PSI. Below 75 PSI, soil becomesincreasingly unstable and will settle excessively. Above 400PSI, roots will likely not grow exept when soil is above fieldcapacity.·If 6" or less of soil are compacted above acceptablereadings (surface soil is compacted), till the top 6" of thesoil surface with a rototiller, spade tiller, or ripper. Spread2-3" of compost on the surface of the tilled soil. Till thecompost into the loosened soil and smooth out gradeswith a drag rake. See detail 1 below.·If more than 6" of soil are compacted above acceptablereadings (subsurface soil is compacted), fracture soils byspreading 2-3" of compost over the surface of the soil andloosening the soil to a depth of 18-24" using a backhoe. Liftand drop the loosened soil immediately back into thehole. Repeat the process until the entire area has beenloosened. Then, spread 3-4" of compost over the rippedarea and till into the top 6" of the soil surface. See detail 2below.·Till/fracture soils to de-compact until compaction meterreadings are acceptable. Do not complete anytilling/loosening work when the ground is frozen or whenthe soil moisture is above field capacity.PLANTING AREA PREPARATION·The area will be fine-graded, raked smooth and preparedfor seeding or planting with specified materials or anapproved equal.·Seed all exposed soils w/ specified seed mix or approvedequal and cover with bio-degradable erosion controlblankets (BioNet SC150 BN or equivalent), and stake inplace to increase seed to soil contact, improvegermination, and decrease erosion potential.Hydroseeding with a tackifier for erosion control is alsoacceptable.PLANTING:·Plant shrubs only after soil decompaction/planting areapreparation work has been completed.·Plant shrubs according to detail 3 provided on this sheet.·If temporary irrigation is not feasible, only plant in late fallor mid spring for best survival rate.SUPPLEMENTAL IRRIGATION:·Install a temporary, above-ground irrigation system toprovide supplemental water to all plantings for 2-3 growingseasons or until plants are fully established.·Irrigation for shrubs should be drip irrigation only in order tosupply water directly to the plant.MATERIAL INFORMATION:·All erosion control measures used for the project shall be100% biodegradable. No materials that containpolypropylene or similar nettings or content shall beallowedCONTRACTOR QUALIFICATIONS:·All machine work will be completed by an insuredoperator with the appropriate hoisting and hydraulicslicenses.·Contractor should be able to provide a proven trackrecord of successful native planting projects in NewEngland.SCALE:DATE:All rights reserved. The drawings, designs, andideas embodied therein are property ofCLM/JS and shall not be copied, reproduced,or disclosed in connection with any work otherthan the project for which they have beenprepared, in whole or part, without priorwritten authorization of CLM/JS.NO:DATE:REVISION:BY:88 Route 6A, Suite 2B | Sandwich, MA 02563www.crawfordlm.com | 508.477.1346www.jenickstudio.com | 508.477.1346OLD SHORE ROAD - SOUTH SIDE 3/11/20251/4" = 1'-0"PLANTING PLAN BARNSTABLE, MA 02630 PLANT SCHEDULE (39 SHRUBS)ABBR.SCIENTIFIC NAMECOMMON NAMEQTYSIZE (DBH)AMAronia melanocarpaBlack Chokeberry6 #1-5MPMorella pensylvanicaNorthern Bayberry10 #1-5RVRosa virginianaVirginia Rose17#1-5VDViburnum dentatumArrowwood Viburnum6 #1-5NSEED MIX:Ernst Seeds - Partially Shaded Area Roadside Mix (or approved equal)Little Bluestem (Schizachyrium scoparium), Virginia Wildrye (Elymusvirginicus), Purple Coneflower (Echinacea purpurea), Bottlebrush Grass(Elymus hystrix), Partridge Pea (Chamaecrista fasciculata), BlackeyedSusan (Rudbeckia hirta), Oxeye Sunflower (Heliopsis helianthoides), TallWhite Beardtongue (Penstemon digitalis), Golden Alexanders (Ziziaaurea), Bigleaf Aster (Aster macrophyllus), Blue False Indigo (Baptisiaaustralis), Narrowleaf Mountain Mint (Pycnanthemum tenuifolium),Calico Aster (Aster lateriflorus), Biennial Beeblossom (Gaura biennis),Roundhead Lespedeza (Lespedeza capitata), Marsh Blazing Star(Liatris spicata), Brown Eyed Susan (Rudbeckia triloba), Ohio Spiderwort(Tradescantia ohiensis), Butterfly Milkweed (Asclepias tuberosa), HeathAster (Aster pilosus), Common Milkweed (Asclepias syriaca), WildBergamot (Monarda fistulosa), White Goldenrod (Solidago bicolor),Gray Goldenrod (Solidago nemoralis), Eastern Columbine (Aquilegiacanadensis), Hairy Beardtongue (Penstemon hirsutus), AppalachianBeardtongue (Penstemon laevigatus), Hoary Mountain Mint(Pycnanthemum incanum), Early Goldenrod (Solidago juncea)4 2 0 4 12SCALE: 1/4" = 1'-0"TOWN OF BARNSTABLE, MA OLD SHORE ROAD STORMWATER ENGINEER/SURVEYORKleinfelder1 Beacon StreetBoston, MA 02108(617)497-7800www.kleinfelder.comCLM WILL NOT PROVIDEOVERSIGHT OR CERTIFICATIONFOR ANY WORK COMPLETED BYOTHERS, NOR DOES CLM TAKEANY RESPONSIBILITY FOR WORKCOMPLETED BY OTHERS.P-110 of 11 G G G D GGWWTOWN OF BARNSTABLEDepartment of Public WorksAdministration & Technical Support382 Falmouth Road, Hyannis, MA 02601Phone: (508) 790-6400https://townofbarnstable.usREVISIONS NO.: DATE:COMMENTS: 5 DRAWING NOTES: DRAWN BY: SCALE: SHEET NO.: PROJECT NO: DATE: 4 3 2 1 NOTES:FLOOD NOTE : ENVIRONMENTAL NOTES: 2024-3-27 ADD WETLAND RESOURCE AREAS 11 of 11 EX-1 NOI: Old Shore Road Stormwater Quality Improvement Project ATTACHMENT C Delineation Summary WETLAND DELINEATION MEMO PREPARED FOR: Greg Avenia PREPARED BY: Nick Crawford PROJECT: Old Shore Road, South Side DATE: March 28, 2025 CLM completed a wetland determination to the south of the public boat ramp off Old Shore Road in Cotuit on March 18th, 2024. The site immediately abuts Cotuit Bay. The purpose of the wetland determination was to determine the location and extent of wetlands within the area. The weather was overcast and approximately 40 degrees, wind was light and the most recent precipitation event was rain over a week prior. Wetlands were determined and delineated using the criteria and procedures described in the Massachusetts Handbook for Delineation of Bordering Vegetated Wetlands, Second Edition, as well as the Salt Marshes Delineation Checklist and with the definition established by the Massachusetts Department of Environmental Protection (DEP) regulations found at 310 CMR 10.32 pertaining to Salt Marsh. Determinations and delineations utilized available resources including: - U.S. Geological Survey’s (USGS) The National Map Viewer (Figure 1) - U.S. Department of Agriculture’s (USDA) Web Soil Survey (Figure 2) - U.S. Fish and Wildlife Service’s (USFWS) National Wetland Inventory (Figure 3) - MassMapper, DEP Wetlands Detailed with Outlines (Figure 4) Salt Marsh is determined to be the most landward resource area within the project area. A velocity flood zone (Flood Zone VE) is also located within the project area. CLM placed wooden stakes with orange flags along the upper limit of the Salt Marsh within the project area. CLM placed seven (7) total stakes numbered SM#1 through SM#7. The delineation was performed by evaluating the highest high tide line, extending landward, as well as assessing the presence of plants that are adapted to or prefer growing in saline soils. The Salt Marsh on site is dominated by Salt marsh cord grass (Spartina alterniflora), Salt meadow cord grass (Spartina patens), High-tide bush (Iva fructescens), and Groundseltree (Baccharis halimifolia). Salt Marsh species comprise over 50% of vegetation. The highest high tide line was evidenced by a clear line of wrack extending to the landward edge of the Salt Marsh. Additionally, peat was observed on site within the area determined as Salt Marsh. CLM’s findings are concurrent with web resources (see attached figures). The USDA Web Soil Survey (Figure 2) identified Carver coarse sand, 8 to 15 percent slopes, for which saturated hydraulic conductivity is very high throughout. Additionally, the UFWS National Wetland Inventory Map (Figure 3) identifies Estuarine and Marine Wetland in this area, and no Freshwater Wetlands are identified in the area. Finally, the MassMapper online resource identifies Salt Marsh within the project area approximately matching CLM’s on-site determination. Coastal Bank is documented to the north and south, and no freshwater wetlands are identified within the project area or nearby. Based on CLM’s observations of Salt Marsh species, a clear wrack line, and peat on site, as well as confirmation with several online resources, CLM determined that Salt Marsh is the most landward resource area within the project area. The edge of the Salt Marsh was located and flagged on site to be included on the necessary project documents. Should you have any questions, please contact me at (508)477-1346. Thank you, Nick Crawford, PLA, ASLA CERTIFIED ECOLOGICAL RESTORATION PRACTITIONER CO-FOUNDER AND PRINCIPAL, CRAWFORD LAND MANAGEMENT FIGURES FIGURE 1. U.S. Geological Survey’s (USGS) The National Map Viewer FIGURE 2. U.S. Department of Agriculture’s (USDA) Web Soil Survey FIGURE 3. U.S. Fish and Wildlife Service’s (USFWS) National Wetland Inventory FIGURE 4. MassMapper, DEP Wetlands Detailed with Outlines RESOURCES Jackson, S. D., Henson, D. J., Hilgeman, D., McHugh, M., & Rhodes, L. (2022). Massachusetts handbook for delineation of bordering vegetated wetlands (2nd ed.). Massachusetts Department of Environmental Protection. Massachusetts Department of Environmental Protection. (2014). 310 CMR 10.00: Wetlands Protection Act Regulations. Massachusetts Department of Environmental Protection. (2024). 310 CMR 10.32: Salt Marshes. Massachusetts Office of Coastal Zone Management, & Massachusetts Department of Environmental Protection. (2020). Applying the Massachusetts Coastal Wetlands Regulations: A practical manual for conservation commissions to protect the storm damage prevention and flood control functions of coastal resource areas (Updated ed.). The National Map Advanced Viewer USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Override 1 3/27/2025, 3:32:55 PM 0 0.15 0.30.07 mi 0 0.25 0.50.13 km 1:9,028 USGS 2021 USGS Soil Map—Barnstable County, Massachusetts Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 3/27/2025 Page 1 of 34608200460830046084004608500460860046087004608800460890046082004608300460840046085004608600460870046088004608900380300380400380500380600380700380800380900 380300 380400 380500 380600 380700 380800 41° 37' 24'' N 70° 26' 13'' W41° 37' 24'' N70° 25' 46'' W41° 36' 57'' N 70° 26' 13'' W41° 36' 57'' N 70° 25' 46'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 19N WGS84 0 150 300 600 900Feet 0 50 100 200 300Meters Map Scale: 1:4,070 if printed on A portrait (8.5" x 11") 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 23, Sep 17, 2024 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 Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 3/27/2025 Page 2 of 3 Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 252A Carver coarse sand, 0 to 3 percent slopes 2.7 3.2% 252C Carver coarse sand, 8 to 15 percent slopes 22.4 27.4% 252D Carver coarse sand, 15 to 35 percent slopes 5.8 7.1% 259A Carver loamy coarse sand, 0 to 3 percent slopes 14.3 17.5% 259B Carver loamy coarse sand, 3 to 8 percent slopes 17.4 21.3% 607 Water, saline 19.3 23.5% Totals for Area of Interest 81.9 100.0% Soil Map—Barnstable County, Massachusetts Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 3/27/2025 Page 3 of 3 National Wetlands Inventory Map U.S. Fish and Wildlife Service, National Standards and Support Team, wetlands_team@fws.gov Wetlands Estuarine and Marine Deepwater Estuarine and Marine Wetland Freshwater Emergent Wetland Freshwater Forested/Shrub Wetland Freshwater Pond Lake Other Riverine March 27, 2025 0 0.06 0.120.03 mi 0 0.1 0.20.05 km 1:3,762 This page was produced by the NWI mapper National Wetlands Inventory (NWI) This map is for general reference only. The US Fish and Wildlife Service is not responsible for the accuracy or currentness of the base data shown on this map. All wetlands related data should be used in accordance with the layer metadata found on the Wetlands Mapper web site. DEP Wetlands Detailed with Outlines DEP Wetlands Detailed With Outlines Property Tax Parcels NOI: Old Shore Road Stormwater Quality Improvement Project ATTACHMENT D Stormwater Memo 20244246.001A Page 1 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 MEMORANDUM TO: Town of Barnstable FROM: Greg Avenia, P.E., Kleinfelder DATE: January 2025 SUBJECT: Drainage Narrative Barnstable Old Shore Road Stormwater Old Shore Road, Cotuit, MA 02635 This Drainage Narrative has been prepared to show compliance with the Massachusetts Stormwater Management Standards to support the proposed Project. The Town of Barnstable is proposing to retrofit the existing drainage system within Old Shore Road with underground infiltration chambers and a leaching basin. The proposed system will be integrated into the existing system of leaching basins to provide maximum stormwater treatment in the project area. The project will also include armoring of an existing parking area with structured gravel paving, planting of native shrubs in a no parking area, and repaving a portion of Old Shore Road after installation of the proposed drainage components. 1 EXISTING DRAINAGE CONDITIONS Under existing conditions, the drainage area of the existing drain system encompasses 86,667 square feet, with approximately 7,873 square feet of directly connected impervious area. Stormwater runs to two catch basins that drain into a system of three leaching basins. Pervious area that flows to the existing system includes runoff from residential and wooded properties. A portion of a private driveway drains on to Old Shore Road from the south and is included in the total impervious area listed above. Stormwater that bypasses the catch basins runs overland to the nearby Salt Marsh or to Cotuit Bay. Cotuit Bay is an important shellfishing area with impaired bacterial water quality. 2 PROPOSED DRAINAGE CONDITIONS Under proposed conditions, ground cover is not anticipated to change. Old Shore Road will be resurfaced within the project area after installation of the proposed drainage system but will not be expanded. Although regrading is not necessary for stormwater capture, a proposed grading plan is included on the proposed site plans. The parking area on the shoulder will be constructed with structural gravel paving that will allow for the infiltration of stormwater. The existing catch basins will continue to serve as the 20244246.001A Page 2 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 lowest elevation inlet for the system. New catch basins will be added upgradient of the existing system to improve stormwater capture rates within the drainage area and direct flows to new subsurface chamber infiltration systems. By implementing the proposed stormwater management practices, stormwater runoff water quality from Old Shore Road to Cotuit Bay is designed to improve. 3 HYDROLOGIC ANALYSIS To calculate the water quality volume, the drainage area for the site was divided into three subcatchment areas. The project was not evaluated for higher storm events due to system sizing restrictions. System volumes designed for water quality treatment are capped at 120% of the Water Quality Volume as suggested in the Cape Cod Conservation District (CCCD) Example Statement of Work. • The CB-1 Watershed encompasses 37,230 square feet with 2,880 square feet of directly contributing impervious area. Stormwater drains southeast overland toward Old Shore Road and then proceeds to flow northeast down Old Shore Road toward CB-1 of the proposed system and Cotuit Bay. Ground cover in this area includes roadway, woods in good condition, and residential properties. • The CB-2 Watershed encompasses 30440 square feet with 2,925 square feet of directly contributing impervious area. Stormwater drains northwest overland toward Old Shore Road and then proceeds to flow northeast down Old Shore Road toward CB-2 of the proposed system and Cotuit Bay. Ground cover in this area includes roadway, woods in good condition, and residential properties. • The LB-1 Watershed encompasses 11,124 square feet with 2,075 square feet of directly contributing impervious area. From each area adjacent to the road, Stormwater drains overland toward Old Shore Road and then proceeds to flow northeast down Old Shore Road toward the existing catch basins and Cotuit Bay. Ground cover in this area includes roadway, private driveway, woods in good condition, and residential properties. 4 MASSACHUSETTS DEPARTMENT OF ENVIRONMENTAL PROTECTION (MASSDEP) – STORMWATER MANAGEMENT STANDARDS As demonstrated below, the proposed Project complies with the MassDEP Stormwater Management Standards (the Standards) to the maximum extent practicable. Under the Stormwater Management Standards, the Project is considered a retrofit project. The Project has been designed to meet the Stormwater Management Standards to the maximum extent practicable and to improve upon existing conditions. 20244246.001A Page 3 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 4.1 STANDARD 1: NO NEW UNTREATED DISCHARGES No new stormwater conveyance (e.g., outfalls) may discharge untreated stormwater directly to or cause erosion in wetlands or waters of the Commonwealth. No change: The Project has been designed to comply with Standard 1. Under existing conditions, there are no existing outfalls within the project area and a small infiltration system consisting of 3 drywells within Old Shore Road; runoff currently flows overland directly from the site to the wetlands to the east before reaching Cotuit Bay. Under proposed conditions, the stormwater system will have increased infiltration volume to treat the water quality volume for all upgradient portions of Old Shore Road. Bypass will flow to the nearby salt marsh and Cotuit Bay similar to existing drainage patterns. • Deep sump catch basins are proposed to provide pretreatment prior to discharging to infiltration chambers and leaching basins. • The infiltration chambers and a leaching basin will provide primary water quality treatment for this development. The system has been sized to accommodate the water quality volume (WQV) for all upgradient impervious areas. The system size is restricted to this value per CCCD requirements, and the storage volume should accommodate at least 100% but no more than 120% of the WQV. 4.2 STANDARD 2: PEAK RATE ATTENUATION Stormwater management systems shall be designed so that post-development peak discharge rates do not exceed pre-development peak discharge rates. This Standard may be waived for discharges to land subject to coastal storm flowage as defined in 310 CMR 10.04. Standard Met: The project is a retrofit of an existing stormwater treatment system within an existing roadway. The ground cover within the project is unchanged and additional catch basins, storage, and infiltration capacity are proposed to be added to the stormwater treatment system. The post-development peak rates and volumes will be equal to or less than the peak rates under existing conditions for all the analyzed storm events as ground cover and grade will be unchanged. The proposed stormwater system will capture and infiltrate more runoff than the existing system. 4.3 STANDARD 3: STORMWATER RECHARGE Loss of annual recharge to groundwater shall be eliminated or minimized through the use of environmentally sensitive site design, low impact development techniques, stormwater management practices and good operation and maintenance. At a minimum, the annual recharge from the post- development site shall approximate the annual recharge from pre-development conditions based on soil 20244246.001A Page 4 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 types. This Standard is met when the stormwater management system is designed to infiltrate the required recharge volume as determined in accordance with the Massachusetts Stormwater Handbook. Standard Met: The Project has been designed to comply with Standard 3. The proposed infiltration systems have 805 cubic feet of storage and can infiltrate the first inch of runoff for all tributary directly connected impervious area. The required recharge volume calculation is included below. TABLE 1: IMPERVIOUS AREA SUMMARY FOR STANDARD 3 Existing Impervious Area (sq. ft) Proposed Impervious Area (sq. ft) Change (sq. ft) 7,873 7,873 0 The project site is surrounded by Hydrologic Soil Group A soils. Per the Massachusetts Stormwater Handbook, a recharge rate of 0.6 inches (0.05 feet) shall be used for all impervious area in areas with Hydrologic Soil Group A, the highest recharge rate outlined in the definition of Standard 3. When this rate is applied to the existing directly connected impervious area of 0.18 acres or 7,873 square feet, the required recharge volume associated with this impervious area is calculated to 328 cubic feet. The proposed stormwater management system can store and infiltrate more than this required volume. See Appendix D for stormwater storage calculations. 4.4 STANDARD 4: WATER QUALITY Stormwater management systems shall be designed to remove 80% of the average annual post- construction load of Total Suspended Solids (TSS). This Standard is met when: a) Suitable practices for source control and pollution prevention are identified in a long-term pollution prevention plan, and thereafter are implemented and maintained. b) Structural stormwater best management practices are sized to capture the required water quality volume determined in accordance with the Massachusetts Stormwater Handbook; and c) Pretreatment is provided in accordance with the Massachusetts Stormwater Handbook. Standard Met: The Project has been designed to comply with Standard 4. Table 2 shows the stormwater treatment provided for the proposed project. Water Quality Volumes were calculated for the first 1.0” of runoff per NRCS and MassDEP standards. The provided water quality volume represents the volume of the first inch of runoff from the impervious area captured by the proposed treatment system. 20244246.001A Page 5 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 TABLE 2: REQUIRED WATER QUALITY VOLUME (WQV) Watershed Area Required WQV Provided WQV Existing Total Impervious Area 7,873 sf 656 cf* 701 cf Proposed New Impervious Area (in addition to existing) 0 sf 0 cf *To Max. Extent Practicable A Long-Term Pollution Prevention Plan (LTPPP) and Operation & Maintenance Plan is included in Appendix C. The pretreatment for the site has been oversized to reduce the Operation and Maintenance Burden on the Town. Erosion and Sediment transport are known issues on site, and the existing infiltration system requires frequent maintenance to remain operational, at the expense of the Town. Additional volume in excess of the traditional 20% of the WQV for pretreatment was provided via oversized deep sump catch basins. The pretreatment values are shown below. These values represent the sum of the volumes of the 6-foot diameter deep sump catch basins. This value is inclusive of the existing volume provided by the existing two 4-foot diameter catch basins on site, assumed to have a sump depth of 4 feet. TABLE 3: REQUIRED PRETREATMENT VOLUME Watershed Area Required Pretreatment (20% of WQV) Provided Pretreatment** Existing + 4’ CB Provided Pretreatment** Existing + 6’ CB Existing Total Impervious Area 7,873 sf 131.2 cf* 201 cf (153%) 327 cf (249%) Proposed New Impervious Area (in addition to existing) 0 sf 0 cf *To Max. Extent Practicable ** Calculated for a sump depth of 4 feet for both existing and proposed catch basins. As shown in Table 3, two 4-foot diameter catch basins with a sump depth of 4 feet would be sufficient for the calculated pretreatment volume, however in order to decrease the burden of maintenance for the Town, 6-foot diameter basins are proposed. The difference in cost between a 6-foot catch basin and a 4- foot catch basin is approximately $2,500. A breakdown of these volumes on a per system basis is shown in the following table. 20244246.001A Page 6 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 TABLE 4: PRETREATMENT AND WATER QUALITY VOLUMES BY SYSTEM Watershed Directly Connected Impervious Area Required Pretreatment (20% of WQV) Provided Pretreatment Required WQV Provided WQV Western Infiltration Chambers 2,880 sf 48 cf 198 cf 240 cf 256 cf Eastern Infiltration Chambers 2,925 sf 49 cf 198 cf 244 cf 256 cf Leaching Catch Basin 2,075 sf 35 cf 176 cf 172 cf 189 cf Structured Pervious Gravel Paving 0 sf (direct entry only) N/A N/A 32 cf 92 cf 4.5 STANDARD 5: LAND USES WITH HIGHER POTENTIAL POLLUTANT LOADS (LUHPPLS) For Land Uses with Higher Potential Pollutant Loads (LUHPPLs), source control and pollution prevention shall be implemented in accordance with the Massachusetts Stormwater Handbook to eliminate or reduce the discharge of stormwater runoff from such land uses to the maximum extent practicable. If through source control and/or pollution prevention all LUHPPLs cannot be completely protected from exposure to rain, snow, snow melt, and stormwater runoff, the proponent shall use the specific structural stormwater BMPs determined by the Department to be suitable for such uses as provided in the Massachusetts Stormwater Handbook. Stormwater discharges from LUHPPLs shall also comply with the requirements of the Massachusetts Clean Waters Act, M.G.L. c. 21, §§ 26-53 and the regulations promulgated thereunder at 314 CMR 3.00, 314 CMR 4.00 and 314 CMR 5.00. No change: Standard 5 does not apply to the Project. There are no Land Uses with Higher Potential Pollutant Loads within the project area. 4.6 STANDARD 6: CRITICAL AREAS Stormwater discharges within the Zone II or Interim Wellhead Protection Area of a public water supply and stormwater discharges near or to any other critical area require the use of the specific source control and pollution prevention measures and the specific structural stormwater best management practices determined by the Department to be suitable for managing discharges to such areas as provided in the 20244246.001A Page 7 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Massachusetts Stormwater Handbook. A discharge is near a critical area if there is a strong likelihood of a significant impact occurring to said area, taking into account site-specific factors. Stormwater discharges to Outstanding Resource Waters and Special Resource Waters shall be removed and set back from the receiving water or wetland and receive the highest and best practical method of treatment. A “stormwater discharge” as defined in 314 CMR 3.04(2)(a)1 or (b), to an Outstanding Resource Water or Special Resource Water shall comply with 314 CMR 3.00 and 314 CMR 4.00. Stormwater discharges to a Zone I or Zone A are prohibited unless essential to the operation of a public water supply. Standard Met: The project is not located near a Massachusetts regulated critical area. 4.7 STANDARD 7: REDEVELOPMENTS AND OTHER PROJECTS SUBJECT TO THE STANDARDS ONLY TO THE MAXIMUM EXTENT PRACTICABLE A redevelopment project is required to meet the following Stormwater Management Standards only to the maximum extent practicable: Standard 2, Standard 3, and the pretreatment and structural best management practice requirements of Standards 4, 5, and 6. Existing stormwater discharges shall comply with Standard 1 only to the maximum extent practicable. A redevelopment project shall also comply with all other requirements of the Stormwater Management Standards and improve existing conditions. No substantive change: The Project is considered a redevelopment and thus is fully subject to Standards 1, 7, 8, 9, and 10. Standards 2, 3, 4, 5, and 6 have been met to the maximum extent practicable. 4.8 STANDARD 8: CONSTRUCTION PERIOD POLLUTION PREVENTION AND EROSION AND SEDIMENTATION CONTROLS A plan to control construction-related impacts, including erosion, sedimentation and other pollutant sources during construction and land disturbance activities (construction period erosion, sedimentation, and pollution prevention plan) shall be developed and implemented. Standard Met: A sediment and erosion control plan is outlined below. The plan conforms with the requirements of the Massachusetts Erosion Control. The site plans call for the installation of sediment control barriers around the perimeter of the site to prevent off-site sediment transport. All stockpiles will be surrounded with straw wattle during the earthwork phase of construction. A SWPPP will be prepared by the contractor prior to the onset of construction. During construction, the contractor will be required to address any erosion issues that appear as a result of land disturbance. This may include the installation of additional sediment barrier, temporary erosion control matting, or temporary seeding. Erosion control measures will be repaired as necessary during 20244246.001A Page 8 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 construction. The contractor will be required to install and maintain all erosion control measures in accordance with the Massachusetts Stormwater Handbook. Stormwater controls must be maintained in good operating condition until all disturbed soils are permanently stabilized. To ensure this, the following areas will be inspected by the Contractor every week and after every rainfall event of 0.5 inches or greater: The following standard maintenance practices will apply to the erosion and sedimentation controls for the project: • All erosion and sediment control measures will be properly maintained. If repairs or other maintenance is necessary, it will be initiated by the Contractor within 24 hours of report; • Straw Wattles will be inspected for depth of sediment, tears, to see if the fabric is securely attached to the fence posts, and to see that the fence posts are firmly in the ground; • Built up sediment will be removed from straw wattles when it has reached one-half the height of the fence and at end of the job; • Erosion control measures will be maintained for disturbed areas of the site that have not been stabilized; • Erosion control measures will be installed and maintained for the construction staging area, stockpiles, and material storage areas until those areas have been stabilized after construction; and, • Temporary and permanent seeding and planting will be inspected for bare spots, washouts, and healthy growth. If the inspections reveal the need for additional control devices to prevent erosion and sedimentation, the Contractor will promptly install additional protection devices as required. Control devices in need of repair will be repaired promptly after identification. A stockpile of 100 linear feet of straw wattles will be maintained on the site and under cover for emergency repairs and routine maintenance. The Owner (or their representative) will be responsible for preparing an inspection and maintenance report following each inspection and filing completed reports after maintenance action has taken place by the Contractor. The Contractor's superintendent will be responsible for maintenance and repair activities and completing and signing the maintenance action portion of inspection and maintenance reports. 4.9 STANDARD 9: OPERATION AND MAINTENANCE PLAN A Long-Term Operation and Maintenance (O&M) Plan shall be developed and implemented to ensure that stormwater management systems function as designed. 20244246.001A Page 9 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Standard Met: An Operation & Maintenance Plan is referenced as Appendix C and is provided under separate cover. This O&M Plan conforms to the requirements of MassDEP and the Town of Barnstable Stormwater Management Rules and Regulations. 4.10 STANDARD 10: PROHIBITION OF ILLICIT DISCHARGES All illicit discharges to the stormwater management system are prohibited. No change Illicit Discharge Statement The project’s stormwater management system, as shown on the plans submitted with this report, have been designed in full compliance with Standard 10. The project area does not have any known illicit connections. 5 BARNSTABLE DPW STORMWATER STANDARDS 5.1 NO NEW STORMWATER DISCHARGES No new stormwater conveyances (e.g. outfalls) may discharge untreated stormwater directly to or cause erosion in wetlands or Waters of the Commonwealth. No change: See Massachusetts Stormwater Handbook Standard 1 response above. 5.2 LOW IMPACT DEVELOPMENT (LID) Low Impact Development (LID) site planning and design strategies must be implemented unless infeasible in order to reduce the discharge of stormwater and development sites; Standard Met: Low Impact Development site planning and design strategies are used to the maximum extent practicable. No additional impervious area will be added to the project area, pervious structured gravel parking will be used for the existing parking area, and native bushes will be planted in no parking areas to restrict access and provide additional erosion control. 5.3 MASSACHUSETTS STORMWATER HANDBOOK Stormwater management system design shall be consistent with, or more stringent than, the requirements of the 2008, or most current version, of the Massachusetts Stormwater Handbook; 20244246.001A Page 10 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Standard Met: The requirements set forth in the most current version of the Massachusetts Stormwater Handbook, dated 2008, were used during the stormwater design process. 5.4 NEW DEVELOPMENT POLLUTANT REMOVAL Stormwater management systems on new development shall be optimized for nitrogen removal and designed to meet an average annual pollutant removal equivalent to 90% of the average annual load of Total Suspended Solids (TSS) related to the total post-construction impervious area on the site AND 60% of the average annual load of Total Phosphorous (TP) related to the total post -construction impervious surface area on the site. a) Average annual pollutant removal requirements in Section 903-7 B.(4) are achieved through one of the following methods: a. Installing BMPs / Structural Control Measures (SCMs) that meet the pollutant removal percentages based on calculations developed consistent with EPA Region 1’s BMP Accounting and Tracking Tool (2-16) or other BMP / SCM performance evaluation tool provided by EPA Region 1, where available. If EPA Region 1 tools do not address the planned or installed BMP / SCM performance, then any federally or State-approved BMP / SCM design guidance or performance standards (e.g., State stormwater handbooks and design guidance manuals) may be used to calculate BMP performance; or b. Retaining the volume of runoff equivalent to, or greater than, 1.0 inch multiplied by the total post-construction impervious surface area on the new development site; or c. Meeting a combination of retention and treatment that achieves the above standards; or d. Utilizing offsite mitigation that meets the above standards within the same USGS Hydrologic Unit Code (HUC)01 as the new development site. Standard Not Applicable: Standard not applicable. The site is not a new development site. 5.5 REDEVELOPMENT POLLUTANT REMOVAL Stormwater management systems on redevelopment shall be optimized for nitrogen removal and designed to meet an average annual pollutant removal equivalent to 80% of the average annual load of Total Suspended Solids (TSS) related to the total post-construction impervious area on the site AND 50% of the average annual load of Total Phosphorous (TP) related to the total post-construction impervious surface area on the site. a) Average annual pollutant removal requirements in Section 903-7 B.(4) are achieved through one of the following methods: 20244246.001A Page 11 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 a. Installing BMPs / Structural Control Measures (SCMs) that meet the pollutant removal percentages based on calculations developed consistent with EPA Region 1’s BMP Accounting and Tracking Tool (2-16) or other BMP / SCM performance evaluation tool provided by EPA Region 1, where available. If EPA Region 1 tools do not address the planned or installed BMP / SCM performance, then any federally or State-approved BMP / SCM design guidance or performance standards (e.g., State stormwater handbooks and design guidance manuals) may be used to calculate BMP performance; or b. Retaining the volume of runoff equivalent to, or greater than, 0.8 inches multiplied by the total post-construction impervious surface area on the redevelopment site; or c. Meeting a combination of retention and treatment that achieves the above standards; or d. Utilizing offsite mitigation that meets the above standards within the same USGS Hydrologic Unit Code (HUC)01 as the redevelopment site. Standard Met: The site is considered a redevelopment site. The stormwater system is designed to retain and infiltrate the first inch of runoff and thus satisfies the requirements of 903 -7 B.(4) through item 5.5 a)a. listed above. 5.6 REDEVELOPMENT ACTIVITIES Redevelopment activities that are exclusively limited to maintenance and improvement of existing roadways (including widening less than a single land, adding shoulders, correcting substandard intersections, improving existing drainage systems, and repaving projects) shall improve existing conditions where feasible and are exempt from part Section 903-7 B.(5). Roadway widening or improvements that increase the amount of impervious area on the redevelopment site by greater than or equal to a single land width that shall meet the requirements of Section 903-8 7. (5). Standard Met: The site is considered a redevelopment. 6 NRCS CPS 570 6.1 GENERAL CRITERIA APPLICABLE TO ALL PURPOSES Plan, design, and construct stormwater runoff controls to comply with applicable Federal, State, and local laws and regulations, including all necessary permits and utility locations. Develop a plan to reduce the impacts of stormwater runoff from the site based on an assessment of the downstream area. As applicable, include in the plan practices or management activities that will- • Reduce onsite erosion. • Reduce offsite impacts from sedimentation. 20244246.001A Page 12 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 • Reduce the quantity of stormwater leaving the site to levels that will not adversely affect downstream receiving channels. • Maintain or increase infiltration of precipitation to recharge ground water. • Improve the quality of runoff leaving the site. • Leave the site in a stable condition after construction. All runoff control methods must include provisions to safely bypass runoff in excess of the design storm. Stabilization measures Where appropriate, stabilize all areas disturbed by construction as soon as possible after construction to reduce the potential for erosion. When vegetation is used, refer to NRCS CPSs Critical Area Planting (Code 342) or Conservation Cover (Code 327). If vegetation is not appropriate for the site, use other measures such as NRCS CPS Mulching (Code 484) that protect the soil from erosion. Include pretreatment measures in the system as necessary to protect plantings from excessive sediment, trash, debris, or other pollutants. Safety Detention ponds and other areas where water is detained or flows swiftly can present hazards to the public. Where necessary, include appropriate safety features to warn of potential dangers or deter entry to hazardous areas such as with fences, gates, and warning signs Response: The project proposes to increase infiltration and storage capacity, in addition to providing additional pretreatment structures to capture and detain sediment. This system will capture the “first flush” of runoff in all storms and fully infiltrate the water quality volume as part of the treatment process. Additional plantings along the roadside are proposed to prevent parking outside of authorized areas and to control soil erosion once the plants have established. A construction erosion control plan is outlined in the response to Massachusetts Stormwater Standard 8 above. The infiltration system is underground and does not pose a significant safety risk to the public. 6.2 ADDITIONAL CRITERIA FOR THE REDUCTION OF WATER QUANTITY AND IMPROVEMENT OF WATER QUALITY Water Quantity Design stormwater control systems to control flow from the area of concern to rates and volumes that will not cause degradation of downstream areas due to erosion or sedimentation. Acceptable peak rates and volumes are dependent upon the capacity and stability of the receiving channel. Refer to local regulations that specify acceptable discharge rates and volumes for different storm frequencies. In the absence of local requirements, use the 2-year 24-hour predevelopment storm for the peak discharge rate and volume to receiving streams. Control the peak rate of runoff by slowing the release of runoff from the site. This can be accomplished by onsite storage, increasing infiltration onsite, lengthening the flow path of runoff, or a combination of these methods. Use one or more of these methods to reduce peak 20244246.001A Page 13 of 14 January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 rates of runoff. All runoff control methods must include provisions to safely bypass runoff in excess of the design storm. Water Quality Runoff from developing areas, including farmsteads, access roads, and storage areas, can be contaminated with a variety of substances including sediment, oils, chemicals, and trash. Assess site conditions to determine the type of contaminants that must be controlled. Design practices that will capture or reduce these contaminants before they leave the site. These can include diversion of clean water, vegetated filtration areas, rain gardens and other biofilters, management actions to prevent spills of fuels or other contaminants, and trash guards and settling areas that are readily accessible for cleanout. Provide a minimum of 2 feet of soil depth from bedrock to the bottom of impoundments, vegetated filtration areas, rain gardens, and other biofilters. Response: The site is not located in an area with significant pollutant release. Incidental release of oil from cars and boats may occur in relatively small quantities. Trash, if it accumulates, will be regularly removed as part of the maintenance routine from the system. The proposed system will increase onsite storage and infiltration for the water quality storm event by storing and infiltrating the first inch of runoff. This will address water quality and pollutant concerns in the area by treating the “first flush” of runoff for all storm events. Higher volume events will bypass along existing drainage patterns toward the nearby salt marsh and Cotuit Bay. No new impervious area will be added as a result of this project. When coupled with increased infiltration and storage capacity, increases in peak rates of runoff are not a concern. 6.3 ADDITIONAL CRITERIA FOR EROSION AND SEDIMENT CONTROL Control erosion on the site by limiting the amount and length of time that bare soil is exposed to precipitation. This can be accomplished by staging construction and only removing vegetation from a portion of the site at a time, revegetating areas incrementally during construction or using temporary seeding and mulching to stabilize areas until permanent vegetation can be established. Structural erosion control practices that reduce overland flow length and velocity such as NRCS CPSs Diversion (Code 362) and Terrace (Code 600), straw bale barriers, or silt fences can be used to reduce sheet and rill erosion. Refer to the current NRCS soil loss prediction methodology to determine the appropriate spacing for these practices. When erosion cannot be stopped at the source, filter or detain sediment-laden runoff to allow sediment particles to settle out to acceptable levels before releasing runoff from the site. This can be accomplished by sediment traps, sediment basins, and other structures designed to detain or filter runoff. Refer to NRCS CPS Sediment Basin (Code 350) for design requirements for sediment basins. Response: A soil erosion plan is outlined in the response to Massachusetts Stormwater Standard 8. 20244246.002A October 2024 © 2024 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Attachments: Appendix A – Stormwater Checklist Appendix B – Site Plans Appendix C – Stormwater Operation and Maintenance Plan Appendix D – Pretreatment and Water Quality Calculation Appendix E – NRCS Web Soil Survey Appendix F – Board of Health Record Soils Data 20233667.002A January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Appendix A Stormwater Checklist Barnstable SWCheck.doc • 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. Barnstable SWCheck.doc • 04/01/08 Stormwater Report Checklist • Page 2 of 8 Massachusetts Department of Environmental Protection Bureau of Resource Protection - Wetlands Program Checklist for Stormwater Report B. Stormwater Checklist and Certification The following checklist is intended to serve as a guide for applicants as to the elements that ordinarily need to be addressed in a complete Stormwater Report. The checklist is also intended to provide conservation commissions and other reviewing authorities with a summary of the components necessary for a comprehensive Stormwater Report that addresses the ten Stormwater Standards. Note: Because stormwater requirements vary from project to project, it is possible that a complete Stormwater Report may not include information on some of the subjects specified in the Checklist. If it is determined that a specific item does not apply to the project under review, please note that the item is not applicable (N.A.) and provide the reasons for that determination. A complete checklist must include the Certification set forth below signed by the Registered Professional Engineer who prepared the Stormwater Report. Registered Professional Engineer’s Certification I have reviewed the Stormwater Report, including the soil evaluation, computations, Long-term Pollution Prevention Plan, the Construction Period Erosion and Sedimentation Control Plan (if included), the Long- term Post-Construction Operation and Maintenance Plan, the Illicit Discharge Compliance Statement (if included) and the plans showing the stormwater management system, and have determined that they have been prepared in accordance with the requirements of the Stormwater Management Standards as further elaborated by the Massachusetts Stormwater Handbook. I have also determined that the information presented in the Stormwater Checklist is accurate and that the information presented in the Stormwater Report accurately reflects conditions at the site as of the date of this permit application. Registered Professional Engineer Block and Signature Signature and Date Checklist Project Type: Is the application for new development, redevelopment, or a mix of new and redevelopment? New development Redevelopment Mix of New Development and Redevelopment 4/17/25 Barnstable SWCheck.doc • 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): Underground infiltration system 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. Barnstable SWCheck.doc • 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. Barnstable SWCheck.doc • 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. Barnstable SWCheck.doc • 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. Barnstable SWCheck.doc • 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. Barnstable SWCheck.doc • 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. 20233667.002A January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Appendix B Site Plans 20233667.002A January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Appendix C Stormwater Operation and Maintenance Plan Stormwater Management Operation & Maintenance Plan Kleinfelder -1- Barnstable Old Shore Road Stormwater January 2025 STORMWATER OPERATION AND MAINTENANCE PLAN (O&M) OLD SHORE ROAD STORMWATER SYSTEM Owner/ Operator: Town of Barnstable Department of Public Works 382 Falmouth Street Hyannis, MA 02601 Prepared by: Kleinfelder 1 Beacon Street, Suite 8100 Boston, MA 02118 The following operation and maintenance practices will be performed on the proposed stormwater system by the Owner (Town of Barnstable). Responsible Party: Signature Name Table OM-1 Summary of Stormwater System Operation & Maintenance Tasks Listed By Item Item location on site Frequency What to do Infiltration Chambers 1st & 2nd Year Post Construction Every 6 months, and after a major storm Inspection frequency can be reduced to annual following 2nd year post- construction monitoring. Inspections should focus on: Checking the infiltration chambers for standing water or accumulated sediments. Checking the inlet basin or forebay for sediment accumulation, trash, and debris. Inspect to be certain the sedimentation forebay drains within 24 to 72 hrs. Checking inlets, and outlets for blockage, structural integrity, and evidence of erosion. Removal of decaying vegetation, litter, and debris. Paved surfaces Every Six Months or as needed Sweep and remove sediment from paved wearing surfaces at the site. Stormwater Management Operation & Maintenance Plan Kleinfelder -2- Barnstable Old Shore Road Stormwater January 2025 Table OM-1 – Continued Leaching Basins Every Six Months, and after major storms Inspect basin for excessive sediment accumulation, trash, and vegetation build up. Inspect connected pipes for blockages and structural integrity Remove accumulated sediment, trash, and vegetation from sump. Catch Basins Every Six Months, and after major storms Inspect basin for excessive sediment accumulation, trash, and vegetation build up. Remove leaves and trash build up from catch basin grates as necessary. Inspect connected pipes for blockages and structural integrity Remove accumulated sediment, trash, and vegetation from sump. Stormwater Management Operation & Maintenance Plan Kleinfelder -3- Barnstable Old Shore Road Stormwater January 2025 Table OM-2 Annual Checklist of Stormwater System Operation & Maintenance Tasks Listed By Frequency. Frequency Item location on site What to do Date completed Notes Every Six Months Paved surfaces Sweep and remove sediment from paved surfaces on a semi- annual basis. Catch Basins, Leaching Basins Inspect basin for excessive sediment accumulation, trash, and vegetation build up. Remove leaves and trash build up from catch basin grates as necessary. Inspect connected pipes for blockages and structural integrity Remove accumulated sediment, trash, and vegetation from sump.  These inspections should also be performed after all major storms (more than 3.5 inches of rain in a 24-hour period). Stormwater Management Operation & Maintenance Plan Kleinfelder -4- Barnstable Old Shore Road Stormwater January 2025 Table OM-2 - Continued Frequency Item location on site What to do Date completed Notes Every six months Infiltration Chambers Inspections should focus on: Check the infiltration chamber surface for standing water and accumulated sediments. Check the inlet basin or forebay for sediment accumulation, trash, and debris. Inspect to be certain the infiltration system drains within 24 to 72 hrs. Check inlets, outlets, and overflow spillway for blockage, structural integrity, and evidence of erosion. Remove decaying vegetation, litter, and debris.  These inspections should also be performed after all major storms (more than 3.5 inches of rain in a 24-hour period). 20233667.002A January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Appendix D Water Quality Calculation Barnstable Old Shore Road Proposed System Volumes P-1 East Leaching Basin PT-1 Pretreatment Deep Sump Catchbasin ST-1 West Infiltration Chambers ST-2 East Infiltration Chambers Routing Diagram for Barnstable OSR Stormwater Prepared by Kleinfelder, Printed 10/11/2024 HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Subcat Reach Pond Link Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 2HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Summary for Pond P-1: East Leaching Basin Volume Invert Avail.Storage Storage Description #1 4.75'85 cf 6.00'D x 3.00'H Leaching Section Inside #2 115 cf Overall - 6.0" Wall Thickness = 85 cf #2 4.75'48 cf 10.00'D x 3.00'H Vertical Cone/Cylinder 236 cf Overall - 115 cf Embedded = 120 cf x 40.0% Voids #3 2.75'57 cf 6.00'D x 2.00'H Sump 189 cf Total Available Storage Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 3HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond P-1: East Leaching Basin Elevation (feet) Storage (cubic-feet) 2.75 0 2.80 1 2.85 3 2.90 4 2.95 6 3.00 7 3.05 8 3.10 10 3.15 11 3.20 13 3.25 14 3.30 16 3.35 17 3.40 18 3.45 20 3.50 21 3.55 23 3.60 24 3.65 25 3.70 27 3.75 28 3.80 30 3.85 31 3.90 33 3.95 34 4.00 35 4.05 37 4.10 38 4.15 40 4.20 41 4.25 42 4.30 44 4.35 45 4.40 47 4.45 48 4.50 49 4.55 51 4.60 52 4.65 54 4.70 55 4.75 57 4.80 59 4.85 61 4.90 63 4.95 65 5.00 68 5.05 70 5.10 72 5.15 74 5.20 76 5.25 79 5.30 81 Elevation (feet) Storage (cubic-feet) 5.35 83 5.40 85 5.45 88 5.50 90 5.55 92 5.60 94 5.65 96 5.70 99 5.75 101 5.80 103 5.85 105 5.90 107 5.95 110 6.00 112 6.05 114 6.10 116 6.15 119 6.20 121 6.25 123 6.30 125 6.35 127 6.40 130 6.45 132 6.50 134 6.55 136 6.60 138 6.65 141 6.70 143 6.75 145 6.80 147 6.85 150 6.90 152 6.95 154 7.00 156 7.05 158 7.10 161 7.15 163 7.20 165 7.25 167 7.30 170 7.35 172 7.40 174 7.45 176 7.50 178 7.55 181 7.60 183 7.65 185 7.70 187 7.75 189 Water Quality Volume = 172 CF Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 4HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Summary for Pond PT-1: Pretreatment Deep Sump Catchbasin Volume Invert Avail.Storage Storage Description #1 8.75'85 cf 6.00'D x 3.00'H Riser Section #2 4.75'113 cf 6.00'D x 4.00'H Sump 198 cf Total Available Storage Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 5HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond PT-1: Pretreatment Deep Sump Catchbasin Elevation (feet) Storage (cubic-feet) 4.75 0 4.80 1 4.85 3 4.90 4 4.95 6 5.00 7 5.05 8 5.10 10 5.15 11 5.20 13 5.25 14 5.30 16 5.35 17 5.40 18 5.45 20 5.50 21 5.55 23 5.60 24 5.65 25 5.70 27 5.75 28 5.80 30 5.85 31 5.90 33 5.95 34 6.00 35 6.05 37 6.10 38 6.15 40 6.20 41 6.25 42 6.30 44 6.35 45 6.40 47 6.45 48 6.50 49 6.55 51 6.60 52 6.65 54 6.70 55 6.75 57 6.80 58 6.85 59 6.90 61 6.95 62 7.00 64 7.05 65 7.10 66 7.15 68 7.20 69 7.25 71 7.30 72 Elevation (feet) Storage (cubic-feet) 7.35 74 7.40 75 7.45 76 7.50 78 7.55 79 7.60 81 7.65 82 7.70 83 7.75 85 7.80 86 7.85 88 7.90 89 7.95 90 8.00 92 8.05 93 8.10 95 8.15 96 8.20 98 8.25 99 8.30 100 8.35 102 8.40 103 8.45 105 8.50 106 8.55 107 8.60 109 8.65 110 8.70 112 8.75 113 8.80 115 8.85 116 8.90 117 8.95 119 9.00 120 9.05 122 9.10 123 9.15 124 9.20 126 9.25 127 9.30 129 9.35 130 9.40 131 9.45 133 9.50 134 9.55 136 9.60 137 9.65 139 9.70 140 9.75 141 9.80 143 9.85 144 9.90 146 Elevation (feet) Storage (cubic-feet) 9.95 147 10.00 148 10.05 150 10.10 151 10.15 153 10.20 154 10.25 156 10.30 157 10.35 158 10.40 160 10.45 161 10.50 163 10.55 164 10.60 165 10.65 167 10.70 168 10.75 170 10.80 171 10.85 172 10.90 174 10.95 175 11.00 177 11.05 178 11.10 180 11.15 181 11.20 182 11.25 184 11.30 185 11.35 187 11.40 188 11.45 189 11.50 191 11.55 192 11.60 194 11.65 195 11.70 197 11.75 198 Pretreatment value used for total system pretreatment volume calculation Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 6HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Summary for Pond ST-1: West Infiltration Chambers Volume Invert Avail.Storage Storage Description #1A 10.50'164 cf 6.25'W x 17.86'L x 4.50'H Field A 502 cf Overall - 92 cf Embedded = 410 cf x 40.0% Voids #2A 11.50'92 cf ADS_StormTech SC-740 +Cap x 2 Inside #1 Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap 256 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 10.50'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=0.00' (Free Discharge) 1=Exfiltration ( Controls 0.00 cfs) Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 7HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Pond ST-1: West Infiltration Chambers - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-740 +Cap (ADS StormTech® SC-740 with cap length) Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap 2 Chambers/Row x 7.12' Long +0.81' Cap Length x 2 = 15.86' Row Length +12.0" End Stone x 2 = 17.86' Base Length 1 Rows x 51.0" Wide + 12.0" Side Stone x 2 = 6.25' Base Width 12.0" Stone Base + 30.0" Chamber Height + 12.0" Stone Cover = 4.50' Field Height 2 Chambers x 45.9 cf = 91.9 cf Chamber Storage 502.2 cf Field - 91.9 cf Chambers = 410.3 cf Stone x 40.0% Voids = 164.1 cf Stone Storage Chamber Storage + Stone Storage = 256.0 cf = 0.006 af Overall Storage Efficiency = 51.0% Overall System Size = 17.86' x 6.25' x 4.50' 2 Chambers 18.6 cy Field 15.2 cy Stone Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 8HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond ST-1: West Infiltration Chambers Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 10.50 112 0 10.55 112 2 10.60 112 4 10.65 112 7 10.70 112 9 10.75 112 11 10.80 112 13 10.85 112 16 10.90 112 18 10.95 112 20 11.00 112 22 11.05 112 25 11.10 112 27 11.15 112 29 11.20 112 31 11.25 112 33 11.30 112 36 11.35 112 38 11.40 112 40 11.45 112 42 11.50 112 45 11.55 112 48 11.60 112 52 11.65 112 56 11.70 112 60 11.75 112 64 11.80 112 67 11.85 112 71 11.90 112 75 11.95 112 79 12.00 112 83 12.05 112 86 12.10 112 90 12.15 112 94 12.20 112 97 12.25 112 101 12.30 112 105 12.35 112 108 12.40 112 112 12.45 112 116 12.50 112 119 12.55 112 123 12.60 112 126 12.65 112 130 12.70 112 133 12.75 112 137 12.80 112 140 12.85 112 144 12.90 112 147 12.95 112 151 13.00 112 154 13.05 112 157 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 13.10 112 161 13.15 112 164 13.20 112 167 13.25 112 170 13.30 112 173 13.35 112 177 13.40 112 180 13.45 112 183 13.50 112 186 13.55 112 189 13.60 112 191 13.65 112 194 13.70 112 197 13.75 112 200 13.80 112 202 13.85 112 204 13.90 112 207 13.95 112 209 14.00 112 211 14.05 112 214 14.10 112 216 14.15 112 218 14.20 112 220 14.25 112 223 14.30 112 225 14.35 112 227 14.40 112 229 14.45 112 231 14.50 112 234 14.55 112 236 14.60 112 238 14.65 112 240 14.70 112 243 14.75 112 245 14.80 112 247 14.85 112 249 14.90 112 252 14.95 112 254 15.00 112 256 Water Quality Volume = 240 CF Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 9HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Summary for Pond ST-2: East Infiltration Chambers Volume Invert Avail.Storage Storage Description #1A 6.75'164 cf 6.25'W x 17.86'L x 4.50'H Field A 502 cf Overall - 92 cf Embedded = 410 cf x 40.0% Voids #2A 7.75'92 cf ADS_StormTech SC-740 +Cap x 2 Inside #1 Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap 256 cf Total Available Storage Storage Group A created with Chamber Wizard Device Routing Invert Outlet Devices #1 Discarded 6.75'2.410 in/hr Exfiltration over Surface area Discarded OutFlow Max=0.00 cfs @ 0.00 hrs HW=0.00' (Free Discharge) 1=Exfiltration ( Controls 0.00 cfs) Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 10HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Pond ST-2: East Infiltration Chambers - Chamber Wizard Field A Chamber Model = ADS_StormTech SC-740 +Cap (ADS StormTech® SC-740 with cap length) Effective Size= 44.6"W x 30.0"H => 6.45 sf x 7.12'L = 45.9 cf Overall Size= 51.0"W x 30.0"H x 7.56'L with 0.44' Overlap 2 Chambers/Row x 7.12' Long +0.81' Cap Length x 2 = 15.86' Row Length +12.0" End Stone x 2 = 17.86' Base Length 1 Rows x 51.0" Wide + 12.0" Side Stone x 2 = 6.25' Base Width 12.0" Stone Base + 30.0" Chamber Height + 12.0" Stone Cover = 4.50' Field Height 2 Chambers x 45.9 cf = 91.9 cf Chamber Storage 502.2 cf Field - 91.9 cf Chambers = 410.3 cf Stone x 40.0% Voids = 164.1 cf Stone Storage Chamber Storage + Stone Storage = 256.0 cf = 0.006 af Overall Storage Efficiency = 51.0% Overall System Size = 17.86' x 6.25' x 4.50' 2 Chambers 18.6 cy Field 15.2 cy Stone Type III 24-hr 1-Year Rainfall=2.87"Barnstable OSR Stormwater Printed 10/11/2024Prepared by Kleinfelder Page 11HydroCAD® 10.20-2f s/n 00759 © 2022 HydroCAD Software Solutions LLC Stage-Area-Storage for Pond ST-2: East Infiltration Chambers Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 6.75 112 0 6.80 112 2 6.85 112 4 6.90 112 7 6.95 112 9 7.00 112 11 7.05 112 13 7.10 112 16 7.15 112 18 7.20 112 20 7.25 112 22 7.30 112 25 7.35 112 27 7.40 112 29 7.45 112 31 7.50 112 33 7.55 112 36 7.60 112 38 7.65 112 40 7.70 112 42 7.75 112 45 7.80 112 48 7.85 112 52 7.90 112 56 7.95 112 60 8.00 112 64 8.05 112 67 8.10 112 71 8.15 112 75 8.20 112 79 8.25 112 83 8.30 112 86 8.35 112 90 8.40 112 94 8.45 112 97 8.50 112 101 8.55 112 105 8.60 112 108 8.65 112 112 8.70 112 116 8.75 112 119 8.80 112 123 8.85 112 126 8.90 112 130 8.95 112 133 9.00 112 137 9.05 112 140 9.10 112 144 9.15 112 147 9.20 112 151 9.25 112 154 9.30 112 157 Elevation (feet) Surface (sq-ft) Storage (cubic-feet) 9.35 112 161 9.40 112 164 9.45 112 167 9.50 112 170 9.55 112 173 9.60 112 177 9.65 112 180 9.70 112 183 9.75 112 186 9.80 112 189 9.85 112 191 9.90 112 194 9.95 112 197 10.00 112 200 10.05 112 202 10.10 112 204 10.15 112 207 10.20 112 209 10.25 112 211 10.30 112 214 10.35 112 216 10.40 112 218 10.45 112 220 10.50 112 223 10.55 112 225 10.60 112 227 10.65 112 229 10.70 112 231 10.75 112 234 10.80 112 236 10.85 112 238 10.90 112 240 10.95 112 243 11.00 112 245 11.05 112 247 11.10 112 249 11.15 112 252 11.20 112 254 11.25 112 256 Water Quality Volume = 244 CF 20233667.002A January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Appendix E NRCS Web Soil Survey Hydrologic Soil Group—Barnstable County, Massachusetts (Old Shore Hydrologic Soil Group Mapping) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/11/2024 Page 1 of 44608460460848046085004608520460854046085604608580460860046084604608480460850046085204608540460856046085804608600380440380460380480380500380520380540380560380580380600380620380640380660 380440 380460 380480 380500 380520 380540 380560 380580 380600 380620 380640 380660 41° 37' 13'' N 70° 26' 7'' W41° 37' 13'' N70° 25' 56'' W41° 37' 7'' N 70° 26' 7'' W41° 37' 7'' N 70° 25' 56'' WN Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 19N WGS84 0 50 100 200 300Feet 0 15 30 60 90Meters Map Scale: 1:1,090 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 23, Sep 17, 2024 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 (Old Shore Hydrologic Soil Group Mapping) Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/11/2024 Page 2 of 4 Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 252C Carver coarse sand, 8 to 15 percent slopes A 3.7 61.4% 252D Carver coarse sand, 15 to 35 percent slopes A 0.0 0.7% 259A Carver loamy coarse sand, 0 to 3 percent slopes A 0.7 11.6% 259B Carver loamy coarse sand, 3 to 8 percent slopes A 1.6 26.0% 607 Water, saline 0.0 0.3% Totals for Area of Interest 6.0 100.0% Hydrologic Soil Group—Barnstable County, Massachusetts Old Shore Hydrologic Soil Group Mapping Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/11/2024 Page 3 of 4 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 Tie-break Rule: Higher Hydrologic Soil Group—Barnstable County, Massachusetts Old Shore Hydrologic Soil Group Mapping Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 10/11/2024 Page 4 of 4 20233667.002A January 2025 © 2025 Kleinfelder www.kleinfelder.com KLEINFELDER One Beacon Street, Suite 8100, Boston, MA 02108 p | 617.497.7800 f | 617.498.4630 Appendix F Board of Health Record Soils Data NOI: Old Shore Road Stormwater Quality Improvement Project ATTACHMENT E Abutter Information 2,100.00 Conservation Notice of Intent (NOI) Abutter Map for Subject Parcels , 035073, 035071001 This map is for illustration purposes only. It is not adequate for legal boundary determination or regulatory interpretation. This map does not represent an on-the-ground survey. It may be generalized, may not reflect current conditions, and may contain cartographic errors or omissions. Legend Property owners within 100 feet of the perimeter of the subject parcel upon which work is proposed. Parcel lines shown on this map are only graphic representations of Assessor’s tax parcels. They are not true property boundaries and do not represent accurate relationships to physical objects on the map such as building locations. 88 Town of Barnstable GIS Unit 175 3/18/2025 gis@town.barnstable.ma.us Printed on: 0 ft.175 Subject Parcel Abutters 100 ft. Buffer ft. 1 inch = approx. Parcels Town Boundary Railroad Tracks Buildings Approx. Building Buildings Parking Lots Paved Unpaved Roads Paved Road Unpaved Road Bridge Paved Median Water Bodies APPROX. PROJECT LIMIT. ABUTTING PARCELS USED TO GENERATE MAP AND LIST ONLY. ALL WORK LIMITED TO RIGHT OF WAY Conservation Notice of Intent (NOI) Abutter List for Subject Parcels , 035073, 035071001 Property owners within 100 feet of the perimeter of the subject parcel upon which work is proposed. Parcel ID Owner 1 Owner 2 Address Line 1 Address Line 2 City State Zip 035069 HERLIHY, PATRICIA TR PATRICIA HERLIHY REVOCABLE TRUST 7030 SE WINGED FOOT DRIVE STUART 34997FL 035070 HIGGINS, RAYMOND F & MARY M TRS RAYMOND F HIGGINS REVOCABLE TRUST 54 BELCREST ROAD WEST HARTFORD 06107CT 035071001 GOULD, STEVEN C & JANET E 24 OLD SHORE ROAD COTUIT 02635MA 035071002 GOULD, STEVEN C & JANET E 24 OLD SHORE ROAD COTUIT 02635MA 035072 BARNSTABLE, TOWN OF (LDG)367 MAIN STREET HYANNIS 02601MA 035073 SCHMID, LEO M & ANN M 20 CLERMONT LANE ST LOUIS 63124MO 035074 ODENCE, L PHILIP & BETHANY J T PO BOX 102 COTUIT 02635MA 035078 SLANEY, GORDON H JR & JANE TRS SLANEY COTUIT NOMINEE TRUST 25 BARNYARD LANE ABINGTON 02351MA 035106 GEYSER, CONRAD ARLEN TR GEYSER REVOCABLE TRUST PO BOX 89 COTUIT 02635MA 3/18/2025 2:19 PMReport Generated On:Page 1 of 1 9Total Number of Abutters: This list by itself does NOT constitute a "Certified List of Abutters" and is provided only as an aid to the determination of abutters. If a Certified Abutter List is required, you must contact the Assessing Division to have this list certified. 7030 SE WINGED FOOT DRIVE STUART, FL 34997 035069 HERLIHY, PATRICIA TR PATRICIA HERLIHY REVOCABLE TRUST Property ID: 54 BELCREST ROAD WEST HARTFORD, CT 06107 035070 HIGGINS, RAYMOND F & MARY M TRS RAYMOND F HIGGINS REVOCABLE TRUST Property ID: COTUIT, MA 02635 035071001 GOULD, STEVEN C & JANET E 24 OLD SHORE ROAD Property ID: COTUIT, MA 02635 035071002 GOULD, STEVEN C & JANET E 24 OLD SHORE ROAD Property ID: HYANNIS, MA 02601 035072 BARNSTABLE, TOWN OF (LDG) 367 MAIN STREET Property ID: ST LOUIS, MO 63124 035073 SCHMID, LEO M & ANN M 20 CLERMONT LANE Property ID: COTUIT, MA 02635 035074 ODENCE, L PHILIP & BETHANY J T PO BOX 102 Property ID: 25 BARNYARD LANE ABINGTON, MA 02351 035078 SLANEY, GORDON H JR & JANE TRS SLANEY COTUIT NOMINEE TRUST Property ID: PO BOX 89 COTUIT, MA 02635 035106 GEYSER, CONRAD ARLEN TR GEYSER REVOCABLE TRUST Property ID: NOTICE OF INTENT ABUTTER NOTIFICATION LETTER DATE: RE: Upcoming Barnstable Conservation Commission Public Hearing To Whom It May Concern, As an abutter within 100 feet of a proposed project, please be advised that a NOTICE OF INTENT application has been filed with the Barnstable Conservation Commission. APPLICANT: PROJECT ADDRESS OR LOCATION: ASSESSOR’S MAP & PARCEL: MAP PARCEL PROJECT DESCRIPTION: ________________________________________________________ APPLICANT’S AGENT: PUBLIC HEARING: WILL BE HELD REMOTELY VIA ZOOM See agenda posting on Town Clerks website available at least 48 hours in advance of the meeting for details. DATE: / / TIME: P.M. NOTE: Plans and applications describing the proposed activity are on file with the Conservation Commission at https://itlaserfiche.town.barnstable.ma.us/WebLink/Browse.aspx?id=825530&dbid=0&repo=TownOfBarns table, by email to Kimberly.Cavanaugh@town.barnstable.ma.us or by calling (508-862-4093) Town of Barnstable, Department of Public Works Old Shore Road, Village of Cotuit, Town of Barnstable, MA 02635 N/A N/A The Town is proposing to improve stormwater treatment within the Project area by retrofitting the existing drainage system within Old Shore Road with underground infiltration chambers and a leaching basin; armoring an existing gravel parking area on the roadway shoulder with structured pervious gravel paving; and planting native bushes to establish a section of the roadway shoulder as a no parking area NOI: Old Shore Road Stormwater Quality Improvement Project ATTACHMENT F Chapter 707 NOI Submission Checklist Chap 707/rev. March 2022 Page 1 CHAPTER 707 Regulation Governing Minimum Submission Requirements for a Notice of Intent Application The Barnstable Conservation Commission has adopted the following requirements in order to obtain more consistently complete submission documents necessary for a thorough and efficient review of all Notice of Intent (NOI) applications. Failure to complete any of the items in this checklist may result in your application being denied. Applicant or applicant’s agent should check each box denoting that the task has been completed or in certain instances, like field staking, denoting that the task will be completed. The following submission checklist covers the requirements of Chapter 237, Wetlands Protection, of the Part I General Ordinances of the Code of the Town of Barnstable. This checklist shall be submitted to the Barnstable Conservation Division with the NOI application. 1. Requirements a. The applicant understands, unless they’ve instructed otherwise, they are applying both under the Massachusetts Wetlands Protection Act M.G.L. c.131,§40 and Chapter 237 of the Town of Barnstable General Ordinances. b. Attach a written narrative to the NOI application (WPA Form 3), available at: www.mass.gov/eea/agencies/massdep/service/approvals/wpa-form-3.html describing any project impacts and proposed mitigation as they relate to the following: 1) Any of the interests of Chapter 237 of the General Ordinances and the MassDEP Wetlands Protection Act M.G.L. 131, §40. 2) The performance standards contained in the MassDEP Wetlands Protection Regulations (310 CMR 10.00) 3) Chapter 704: Regulation Governing Activity in the 100-ft. Buffer Zone. 4) Chapter 703: Private Docks and Piers. 5) Any other applicable regulations (310 CMR 10.00 or as promulgated under Chapter 237 of the General Ordinances). c. Enclose proper payment to cover the fee for Chapter 237 filings. Consult current Fee Schedule at www.townofbarnstable.us/Conservation d. Please indicate who is to record the Order of Conditions (check one): Applicant Agent 2. Abutter Notification (See Abutter Notification Regulation, Chapter 706) Town of Barnstable Conservation Commission 230 South Street Hyannis Massachusetts 02601 Office: 508-862-4093 E-mail: conservation@town.barnstable.ma.us X X X X X X N/A N/A X X Chap 707/rev. March 2022 Page 2 a. Contact the Conservation Division office at (508) 862-4093 regarding the docketing process, or see current schedule of Conservation Hearings and submission deadlines at: www.townofbarnstable.us/Conservation/ b. Provide a copy of the list of abutters within a 100 ft radius of the project parcel. c. Provide a copy of the Assessor’s Map indicating the parcel of the project site and showing the 100 ft radius of the project parcel. d. Provide a copy of the abutter notification letter. Use the form letter provided in our Abutter Notification Regulation (Chapter 706), available on the Conservation Division website. e. Bring the green return receipts, from the certified mailings to the abutters, as proof of notification to the public hearing. If any mailings are returned, bring the entire envelope, indicating by postal service stamp the reason for return. You will retain the receipts afterwards, not the Conservation Division. f. I further certify under the penalties of perjury that all abutters were notified of the Notice of Intent Application, pursuant to the requirements of Chapter 237 of the General Ordinances of the Code of the Town of Barnstable. Notice must be made in writing by certified mail to all abutters within 100 ft of the property line of the project location. _______________________________________ Signature of Applicant or Representative Date 3. Field Staking: a. On or before Tuesday, @ 8:30 a.m., one week prior to the scheduled public hearing, have your project staked by a professional engineer or registered land surveyor showing all outside corners of all proposed structures and the continuous proposed “limit of work” line. b. Have a wetland scientist or other qualified professional flag all wetland resource areas on or within 100 ft of the work area. Make sure that the flags are sequentially numbered. c. Provide a project identification stake with bright painted top and applicant name and address, easily visible from the street approaching the site. 4. Legal Advertisement Fees: a. Conservation will submit the legal ad for publication in a local newspaper. The applicant or his/her agent is responsible for payment, by check (payable to the Town of Barnstable), at the hearing or by mail. The cost of the legal ad will be pre-calculated and posted on the hearing agenda prior to the hearing. 5. Minimum Documentation for a Complete Application: a. Provide a completely filled-out (in all parts) NOI application as locally adopted for the Town of Barnstable, including MassDEP Vegetated Wetland Field Data Form. Indicate Assessor’s map and parcel of the project, as well as the street or road address, and pertinent village (i.e., Hyannis, Centerville, Barnstable, etc). b. Provide two (2) original project plans, stamped in blue or red ink (wet stamp). Plans must be signed and dated by a Massachusetts licensed, professional engineer, land surveyor, architect or landscape architect (as applicable), and shall be drawn at a readable scale (1" = 20' preferred). For multi-acre sites, a second site plan, drawn at larger scale showing the entire site, should also be provided. X The applicant will field stake prior to the public hearing X The applicant will field stake prior to the public hearing The applicant will field stake prior to the public hearing X X X X X X X X X X Abutters will be notified once a hearing date is determined Chap 707/rev. March 2022 Page 3 c. Provide a signed Permission to Access Property, Form PA. The form must be signed by the property Owner, or legal representative and submitted prior to NOI being docketed and application advertised. Form PA is available at www.townofbarnstable.us/Conservation/. Do not send the abutter letter out until the form is submitted to the Conservation Division office. d. For projects requiring mitigation plantings under Chapter 704 -3, 704-4, and 704-5, mitigation planting location(s) shall clearly be shown on landscaping planting plan. The planting plan shall include species list (chosen from the Town of Barnstable Conservation Commission approved planting lists), sizes, densities and/or quantities. The plan shall also provide area calculations between 0 to 50 and 50 to 100 separately for the amount of mitigation planting required, and the amount of mitigation planting proposed. e. Provide detailed, written street directions to the locus (site). f. Provide a copy of a U.S.G.S. locus map indicating the general area of the project site. g. Provide a check for the Town of Barnstable portion of the required filing fee. (The portion payable to the Commonwealth, see 7. e. below) h. Provide any other documentation, photographs, architectural renderings or other supporting data prepared by professionals competent in the field which may be relevant to the application. 6. The site plan shall also show: a. All existing and proposed contours at 2-ft. minimum intervals (1-ft. preferred). b. Clear delineation of all existing and proposed structures and features. Building structures must be accurately dimensioned (fixed location) from property lines and wetland resource areas. Plans shall provide sufficient detail to show all potential wetland impacts, mitigation, compensatory areas, engineered structures, utilities, landscaping, etc. within the area of jurisdiction. On complicated sites, existing and proposed conditions must be shown on separate sheets. c. Locus inset map of the site clearly showing its location relative to surrounding public streets. d. All wetland resource area flags by individual flag number (matched to the field) to clearly identify all resource areas on or within 100 feet of the work area. The individual who performed the flagging and date of flagging shall be identified on the plan next to the resource line. e. Section views showing changes in grade, cuts and fills. 7. SUBMISSION OF THE COMPLETED APPLICATION WITH PLANS: a. Provide a signed Permission to Access Property, Form PA. The form must be signed by the property Owner, or legal representative and submitted prior to NOI being docketed and application advertised. Form PA is available at www.townofbarnstable.us/Conservation/. Do not send the abutter letter out until the form is submitted to the Conservation Division office. b. Email NOI application and all associated materials in PDF format to Kimberly.Cavanaugh@town.barnstable.ma.us AND Darcy.Karle@town.barnstable.ma.us . Do not include copies of checks. All attachments must be named with the hearing date (year first), type, name, address. Examples 20220301 NOI Smith 21 Main Street or 2022031 NOI Plan Smith 21 Main Street. c. Provide two (2) full NOI applications with folded plans (colored ink stamp) with signature/date to the Town of Barnstable Conservation Division Office for administrative use; N/A N/A X X X X X X X X X X N/A N/A Chap 707/rev. March 2022 Page 4 d. Provide seven (7) additional copies of the NOI (with folded plans and all pertinent data attached) to the Barnstable Conservation Division Office for distribution to, and review by, Conservation Commission members. Any supplementary documentation for administrative and commission review should be submitted as soon as possible prior to the scheduled public hearing.* e. Mail one (1) copy of the complete NOI with plan(s) to the Massachusetts Department of Environmental Protection (MassDEP) Southeast Regional Office, 20 Riverside Dr., Lakeville, MA 02347. Send MassDEP portion of filing fee to: MA Department of Environmental Protection, Box 4062, Boston, MA 02211. f. For roadway construction or repair projects, provid e one electronic copy of the NOI and plans to the Senior Project Manager Special Projects, c/o the Town of Barnstable Department of Public Works, 382 Falmouth Road, Hyannis, MA 02601. g. For coastal piers, dredging, coastal engineering structures or other coastal erosion control projects, provide two hard copies of the NOI and plans to the Shellfish Biologist, c/o Town of Barnstable Natural Resources, 1189 Phinney’s Ln., Centerville, MA 02632. In addition, email a (PDF) version to: 1) shellfishNOI@town.barnstable.ma.us. (Email must be sent the same day as submission to the Conservation Division); and 2) conservationprojects@town.barnstable.ma.us h. Also, for coastal piers, dredging, coastal engineering structures, provide two hard copies of the NOI and plans to the Harbormaster, c/o Town of Barnstable Marine and Environmental Affairs (MEA), 1189 Phinney’s Ln., Centerville, MA 02632. In addition, email a (PDF) version to: 1) harbormaster@town.barnstable.ma.us. (Email must be sent the same day as submission to the Conservation Division); and 2) conservationprojects@town.barnstable.ma.us Note: Please title the file for your NOI project as follows: a. Submission date, b. Last name of applicant, c. Map/parcel of property, e.g., 082316-Smith-076024. *Note: If a revised plan needs to be submitted prior to a hearing, please follow same instructions as 7. b. above (and submit to other entities as may be applicable). Plan revisions must be clearly noted and dated in the revision block. (The same individual who stamped the original plan must also stamp and sign the revised plan). Submitted this day of in the year in accordance with the Town of Barnstable “Regulation Governing Minimum Submission Requirements for a Notice of Intent Application” by: (Print Name) Owner / Applicant Signature Telephone Number Owner’s Authorized Agent Signature Telephone Number Approved: May 28, l997 Revised: May 12, 2015 Revised: August 23, with minor rev. Sept. 6, 2016 Revised March 15, 2022 Amber Unruh 508-737-3198 Electronic submittal will be completed through eDEP online filing X N/A N/A N/A X April 2025 Gregory Avenia, Kleinfelder 508-270-6502 17th