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HomeMy Public PortalAbout20181129 - Planning Board - Agenda TOWN OF HOPKINTON PLANNING BOARD Monday, December 3, 2018 7:30 P.M. Hopkinton Town Hall, 18 Main Street, Hopkinton, MA ______________________________________________________________________________ AGENDA 7:30 Misc. Administrative Business • Approval Not Required Plan – 7 Box Mill Road – Richard Barbieri 7:45 1) Continued Public Hearing – Bucklin St. & Leonard St. – Stormwater Management Permit – Request to withdraw application without prejudice – Wall Street Development Corp. 2) Public Hearing – Bucklin St. & Leonard St. – Stormwater Management Permit – Wall Street Development Corp. 3) Continued Public Hearing – Bucklin St. & Leonard St. – Petition to construct a paper street – Wall Street Development Corp. Proposed construction of a paper street entitled “Bucklin Street”; design and construction standards. Proposal to construct four single family homes with associated driveways, utilities, and related grading. 8:30 4) Public Hearing – Maspenock Woods – West Elm Street – Garden Apartment Site Plan Amendment – Maspenock Woods Realty Trust Proposed changes to building layout and design for an existing house located at 5 West Elm Street within the Maspenock Woods development. Request for continuance of the public hearing to January 14, 2019. 8:30 5) Continued Public Hearing – 18 Cedar Street – Off-street Parking Special Permit Application – Janice Brown Special Permit Application pursuant to Section 210-20.4, Off-street Parking, for off- street parking between a building and a street other than Main Street in connection with the proposed construction of an 8 unit multi-family residential structure. 9:00 6) Continued Public Hearing – Whisper Way OSLPD – Definitive Subdivision Plan Application – 20th Century Homes Proposed 24-lot single family subdivision off Whisper Way and Wood Street. Business to be considered by the Board at any time during the meeting: • The Trails at Legacy Farms – Stormwater Management discussion – BETA Group, Inc. • Approve minutes of 10/29/18 • Planning Board member reports and future agenda items • Correspondence 1 Town of Hopkinton Planning Board 18 Main Street, Hopkinton MA 01748 508-497-9745 DATE: November 29, 2018 TO: Planning Board FROM: Georgia Wilson, Principal Planner RE: Items on December 3, 2018 Planning Board Agenda Miscellaneous Administrative Business: Approval Not Required Plan – 7 Box Mill Road – Richard Barbieri An ANR plan has been submitted to the Board and a decision is due no later than 12/16. The plan shows the creation of 5 various lots off Box Mill Rd. through the readjustment of lot lines and conveyance of parcels. All new proposed lots are labeled as non-buildable as required, as they lots do not have the required frontage or area for the applicable zoning districts. The plan also shows the creation of a grading, maintenance, and access easement off of Box Mill Road. It appears this plan may be step one of a process to create additional building lots in the future. The Plan appears entitled to endorsement, which means that approval under the subdivision control law is not required. 1) Continued Public Hearing – Bucklin St. & Leonard St. – Stormwater Management Permit – Request to withdraw application without prejudice – Wall Street Development Corp. The Applicant has requested to withdraw its stormwater management permit (SWMP) application due to new members having joined after the hearing opened and being ineligible to vote on the application. Please see request to withdraw letter dated 11/1. The Applicant submitted a new SWMP on 11/1. The new SWMP includes plans and materials identical to those submitted under the original SWMP. After the Board has addressed the withdraw request, it can open the public hearing for the new SWMP and the continued public hearing for the roadway petition (both hearings will be held concurrently). 2 2) Public Hearing – Bucklin St. & Leonard St. – Stormwater Management Permit – Wall Street Development Corp.  An application for a stormwater management permit (SWMP) was submitted to the Board on 11/1/18. A decision is due by 1/19/18 and a majority vote is required for approval. All members are eligible to vote. 3) Continued Public Hearing – Bucklin St. & Leonard St. – Petition to construct a paper street – Wall Street Development Corp.  A petition to construct a paper street was submitted to the Board on 7/25/18. A decision is due by 12/7/2018 (135 days from petition submission). A majority vote is required for approval and all members are eligible to vote. If the Board continues the hearing to a future meeting, the decision deadline will need to be extended as well. Project: Proposal to construct a paper street entitled “Bucklin Street”; Proposal to construct 4 single family homes with driveways, utilities and associated grading. A SWM permit is required because the project will result in a land disturbance of one acre or more. A petition to construct Bucklin Street is required to be submitted in order for the Board to apply the Subdivision Regulations to the greatest extent reasonably possible. Conservation Commission: The site contains isolated wetlands and the Applicant has filed a Notice of Intent under the Bylaw. The Commission has had one hearing on the project and the next meeting is scheduled for 12/4. Board of Health: Shaun McAuliffe, BOH Director, provided the following written comment on 11/26 on the resubmitted SWMP: “I have reviewed the application and based on the review of the plans presented, the four (4) proposed lots will be serviced with municipal water and sewer. The soils at the site are very limited and may represent a design challenge for stormwater management. Conservation will oversee the wetland issues that exist at the site” BETA: Please see peer review comments from BETA dated 10/24. The Applicant was provided a copy on 10/24 and response to comments/revised plans are pending. BETA, the Applicant, and Staff met on 11/20 to discuss BETA’s comments in depth. The Applicant is currently revising the plans to reflect BETA’s recommendations. Town Counsel Correspondence: Abutter Objection: An objection letter from Peter Barbieri, legal representatives for the residents at 60 & 62 Pleasant Street, was submitted to the Board on 10/29 and a copy can be accessed via the link below. The letter was forwarded to Town Counsel for their review, and a written response is pending at the time of this memo. Link to objection letter 10/29 Petition Process: The Applicant’s representative and Town Counsel have been in discussion about the status of Bucklin Street, whether the proposed subdivision will qualify for “Approval Not Required” endorsement, and how to approach reviewing the work needed to build out Bucklin Street and install utilities, as approval of roadway design is not part of the Stormwater Management Permit application review. As a result of these discussions, the Applicant has submitted a petition under the provision of M.G.L. c. 41, sec. 81FF for approval of the 3 construction of Bucklin Street. In summary, c. 41, §81FF serves to protect lots, shown on a recorded plan, that were sold off and in existence prior to the Subdivision Control Law (1953) from having to comply with subdivision regulations. Town Counsel agrees that §81FF appears to apply to the subject parcel. However, there are two important caveats: First, case law has clearly established that planning boards have the authority to review and impose conditions on construction of roads and utilities associated with lots protected by §81FF. In the past, the Hopkinton Planning Board has required applicants claiming the §81FF exemption to petition for Planning Board approval of the roadway and utilities associated with the grandfathered lot. (The Applicant has now done so, consistent with the Planning Board’s past practice.) Second, the c. 41 §81FF exemption would be applicable to only the existing lot on Bucklin Street. Subdivision of that lot is fully subject to the Subdivision Control Law. If the applicant were to obtain approval of the roadway pursuant to c. 41 §81FF, endorsement of an ANR plan by the Board (or approval of a definitive subdivision plan) would still be required in order to divide the existing lot. Way in Existence: The submitted plans show the proposed lots having the required frontage on Bucklin Street and Leonard Street. However, because the proposed driveways for the lots connect only to Bucklin Street, under the definition of “lot frontage” in the Hopkinton Zoning Bylaws, the Applicant cannot rely on Leonard Street for the frontage and therefore must demonstrate that Bucklin Street provides the required frontage. In order for the lots to be approved under c. 41, §81P (ANR), the applicant would have to show that Bucklin Street is 1) a public way, 2) a way shown on an approved subdivision plan, or 3) a way that was in existence at the time that the Subdivision Control Law went into effect in Hopkinton (1953) and that, when the ANR plan is submitted, has “sufficient width, suitable grades and adequate construction to provide for vehicular traffic.” The applicant’s representative does not claim that Bucklin Street, which is covered by vegetation, is currently a way in existence. However, he has provided information to Counsel to support Bucklin St. as being a way in existence in 1953 (historic aerials and documentation of utility poles) and Counsel believes the factual question regarding the status of Bucklin Street in 1953 is a matter for determination by the Planning Board. The Planning Board will have to make this determination if and when the applicant submits an ANR plan for endorsement. Alternatively, Town Counsel has opined that the Planning Board may choose to make the determination as part of the roadway petition proceeding, if requested by the Applicant. Applicant Ownership of Bucklin Street: The Applicant has submitted information to the Planning Board regarding its ownership of Bucklin Street, and Town Counsel has reviewed this information. The Applicant asserts that it owns the fee interest in half of the width of Bucklin Street along the frontage of its property, pursuant to the derelict fee statute (G.L. c. 183, § 58) and has submitted a 1998 memorandum and title abstract from Rackemann, Sawyer & Brewster supporting this claim. Town Counsel agrees that the derelict fee statute appears to apply based on this memorandum, with the caveat that Town Counsel has not independently verified the title review. The Applicant also claims, again per the 1998 Rackemann memorandum, to hold an implied easement allowing it to construct and improve access along the length of Bucklin Street to its intersection with Pleasant Street. Town Counsel agrees that this is a plausible claim. Thus, Town Counsel believes that the Applicant has made a sufficiently credible claim of ownership rights in Bucklin Street for the purpose of the roadway petition. Town Counsel notes that an approval by the Planning Board does not adjudicate property rights, and that the abutters may 4 choose to contest the Applicant’s rights. Any property rights dispute would be a private matter between the parties, not involving the Town. Submitted Materials: Site plans and permit applications are included in the meeting packet .The following documents were too large to include in the packet but can be accessed via the links below. 1) Rackermann Ownership 1998 Memo 2) Bucklin St. Historic Photos and Aerials 3) Declaration of Covenants 7-24-18 4) Stormwater Pollution Prevention Plan (SWPPP) 5) Stormwater Management Report Stormwater Management Criteria: The project is subject to the Stormwater Management Standards. The following are the 10 standards, what is proposed, and BETA’s comments to date. Stormwater Standard Proposed BETA comment #1 – No untreated stormwater – No new stormwater conveyances (e.g. outfalls) may discharge untreated stormwater directly to or cause erosion in wetlands or waters of the Commonwealth. The project does not provide new untreated stormwater conveyances to wetlands. Complies – standard has been met. #2 – Post-development peak discharge rates – Stormwater management systems must be designed so that post-development peak discharge rates do not exceed pre-development peak discharge rates. Provided calculations demonstrating that the proposed development will not increase peak discharge rates. 1) Include upland areas that contribute runoff to the project parcel [….] 2) Analyze pre/post stormwater runoff at three analysis points to better determine impacts to abutters 3) Revise 100 year storm calculations using 8.19 in. 4) Model infiltration basins with a CN of 98. #3 – Recharge to groundwater – Loss of annual recharge to groundwater should be minimized through the use of infiltration measures to the maximum extent practicable. Groundwater recharge calculation were provided. 1) Include stamp and signature of Engineer to certify SWMP is in accordance with criteria 2) Provide addit. test pit in SW corner of basin to confirm 2’ of separation from bottom of basin to groundwater elevation. 3)Provide the following: 5 Stormwater Standard Proposed BETA comment - Cross section of proposed drainage basin - Detail of sediment forebay outlet - Draw down device for basin maint - Monitoring well in basin 4) Provide landscape plan per Stormwater regs Appendix B, #20 #4 – 80% TSS removal – For new development, stormwater management systems must be designed to remove 80% of the annual load of total suspended solids. Project includes a new infiltration basin (with sediment forebay) and calculations to demonstrate 80% TSS removal. Complies – standard has been met. #5 – Higher Potential Pollutant Loads – Stormwater discharges from land uses with Higher Potential Pollutant Loads required the use of specific stormwater management BMP’s. Not Applicable Not Applicable #6 – Critical Areas – Stormwater discharges to critical areas must utilize certain stormwater BMP’s approved for critical areas. Not Applicable Not Applicable #7 – Redevelopment – Redevelopment of previously developed sites must meet the Stormwater Management Standards to the maximum extent practicable. Not Applicable Not Applicable #8 – Construction Period Erosion and Sediment Controls – Erosion and sediment controls must be implemented to prevent impacts during construction of land disturbance activities. A Stormwater Pollution Prevention Plan (SWPPP) and an Erosion Control Plan were submitted. 1) Provide the following: - Estimates of total area expected to be disturbed. - Intended sequence and timing of activities that will disturb soils and when erosion controls will be added - Provisions to protect infiltration basin from sediment during construction. 6 Stormwater Standard Proposed BETA comment 2) Recommend including the following conditions: - Town or agent observe excavation of basin prior to loam and seed to verify design assumptions. - Applicant provide a final signed SWPPP prior to construction. #9 – Operations/Maintenance Plan – A long-term operation and maintenance plan shall be developed and implemented to ensure that stormwater management systems function as designed. A Long Term Operation and Maintenance (O&M) Plan was included. 1) Show location of vehicle access to drainage basin and easement on the plans. 2) Provide map showing location of all stormwater systems and facilities to be included in the O+M 3) Provide provisions for PB or its designee to enter the property at reasonable times to inspect the O+M plan. 4) Provide signatures of owners on the O+M 5) Provide estimated operations and maintenance budget. #10 – Illicit Discharges – All illicit discharges to the stormwater management systems are prohibited. A signed Illicit Discharge Statement was not provided. Provide a signed Illicit Discharge Statement. 4) Public Hearing – Maspenock Woods – West Elm Street – Garden Apartment Site Plan Amendment – Maspenock Woods Realty Trust Request for continuance of the public hearing to January 14, 2019. The Applicant has indicated that they would like to proceed with the Conservation Commission application process prior to coming before the Planning Board. 5) Continued Public Hearing – 18 Cedar Street – Off-Street Parking Special Permit Application – Janice Brown An application for a Special Permit pursuant to Zoning Bylaw Section 210-20.4, Off-street Parking, has been submitted to the Board. A 2/3 vote is required for approval and a decision is due 90 days from the close of the public hearing. All members are eligible to vote. Project: The Applicant proposes to construct an eight-unit multi-family residential structure with 9 parking spaces and 4 overflow parking spaces at 18 Cedar Street. An existing single-family home and other various structures on site will be demolished to accommodate the new residential structure. The new parking lot includes a new curb cut on A Street. The existing curb cut on 7 Cedar Street will be utilized. The 0.2 acre site is located in the Downtown Business (BD) and WRPOD zoning districts. Pursuant to Zoning Bylaw Section 210.20.4, off-street parking may be located between the principal building and other streets only upon the grant of a special permit from the Planning Board. The property is a corner lot and has frontage on A Street and Cedar Street. The front yard setback is 40 ft. and is applied to both street frontages. The application states that the parking lot cannot be proposed within the side yard due to the confined buildable area and front yard setbacks. The application shows the parking area situated between A Street, Cedar Street, and the principal building. Board of Appeals: Pursuant to Zoning Bylaw Section 210.20.3, single and multifamily residences are allowed in the BD district only upon the grant of a Special Permit from the Board of Appeals. Section 210.20.3 further requires that all residential uses comply with the Residence A (RA) District dimensional requirements. The Applicant has applied for the necessary Special Permit with the Board of Appeals (BOA) and the hearing was continued without discussion to the BOA meeting on 12/12/18. Materials Submitted: Please see Special Permit application dated 9/10/18. A revised site plan was submitted on 11/27 and is included in the application packet. It appears the newest plan shows more parking spaces than the plan was originally submitted. The Applicant is required to submit a detailed landscape plan, which has not been received to date. BETA: BETA’s scope for the project includes reviewing the project for conformance with 210.20.4 and 210.124, off-street parking. BETA will be reviewing the landscaping and screening in depth. BETA review will begin once a full landscaping plan has been submitted by the Applicant. DPW: John Westerling, DPW Director, provided the following comment via email on 9/18/18 “My only comment is that stormwater runoff from the site cannot impact the public way” Abutter Correspondence: Please see letter dated 10/3/18 from a neighbor group, and letter dated 10/15/18 from Ed and Sue Thompson. Off-street Parking Regulations: Section 210.124, Off-Street parking, states the following in regards to parking lot design: A. Parking lots shall be designed and located to provide screening from abutting properties, buildings and streets, visual relief and sun and wind interruption within the parking area and to assure safe patterns of internal circulation. Landscaping requirements shall, whenever possible, be met by the retention of existing plants and natural landforms. Section 210.20.4, Off-street parking, states the following in regards to the Board’s action: A. No off-street parking shall be located between the principal building and Main Street. Off-street parking may be located between the principal building and other streets only upon the grant of a special permit by the Planning Board. The Planning Board may grant the special permit only if it finds that: (1) The proposed parking will not be detrimental to the surrounding neighborhood, and 8 (2) The proposed location and design of the parking will enhance the downtown streetscape. The term “streetscape” shall refer to all elements that constitute the physical makeup of a street, and that as a group, define its character, including building facades, frontage and placement; the paved street; street furniture; landscaping, including trees and other plantings; awnings; signs and lighting. The proposed plan represents 1 space per bedroom which is required for the residential component of mixed use buildings (5-3-2004 ATM, Article 29) 210-124B (closest comparable use). The adequacy of the number of parking spaces proposed is ultimately under the review of the Board of Appeals. The Planning Board’s scope of review does not include review of the number of parking spaces, but the design of the parking area. 6) Continued Public Hearing – Whisper Way OSLPD – Definitive Subdivision Plan Application – 20th Century Homes An application for definitive subdivision approval has been submitted to the Board. A majority vote is required for approval and a decision is due by 12/17/18. Frank D’Urso is not eligible to vote. Materials Received: Revised definitive plans were received on 11/2 and are included in the packet. A revised Stormwater Report was submitted and can be accessed via the google drive link below: Stormwater Report 11-2-18 BETA: Please see peer review letter dated 11/16. Response comments from the Applicant are pending at the time of this memo. BETA, staff, and the Applicants engineer met on 11/20 to review BETA’s comments in depth and to explore areas where the stormwater management system could be revised to meet the required standards. Board of Health: Please see comment letter dated 10/12 from BoH Director, Shaun McAuliffe. Definitive Plan: The design of the subdivision is consistent with the concept plan shown to the Board in March of this year. It shows 24 lots on an extension of the existing roadway known as Whisper Way. Conservation Commission: The project proposes one wetland crossing. The Applicant has filed a Notice of Intent with the Commission. The Applicant was last before the Commission on 11/13 and the hearing was continued to 12/4. Waiver Requests: Section 7.1 of the Towns Subdivision Rules and Regulations state the following in regards to the Board’s action on waiver request: 9 7.1 Waiver Compliance: In accordance with MGL Ch. 41 Sec. 81R, strict compliance with these regulations may be waived when, in the judgement of the Board, such action is in the public interest and not inconsistent with the intent of the subdivision control law or these regulations. All waiver request must be in writing, identify the regulation being considered, and be submitted to the Board at the time of plan submittal. Construction waivers may be considered by the Board after the plan is approved. The below waivers from the provisions of the Subdivision Rules and Regulations have been requested: §5.4.1 N Cross Sections: The Applicant seeks a waiver from providing cross sections of each street at 50 foot intervals. §5.4.1.R Trees: The Applicant seeks a waiver from providing location, variety, and size of proposed street trees and trees to be retained within right-of-way. The application states that no trees will be able to be retained within the right of way due to its narrow width and the grading required to create the roadway. §5.4.1 Y Street Lights: The Applicant seeks a waiver from showing location of proposed street lights. The Applicant is requesting that street lights not be installed within the subdivision. §8.2.7 A Disturbance to Natural Topography: The Applicant seeks a waiver from fill of an area in excess of 8 feet in depth. Depth of fill greater than 8 feet are required for wetland crossing at station 1+50 and 30+00. § 8.2.7 B Disturbance to Natural Topography: The Applicant seeks a waiver from the construction of roads, stormwater management systems, driveways, pipes, or other infrastructure construction on land area where slopes are at a grade of 25% or more. §8.3.1 Sidewalks: The Applicant requested at the 10/1/18 meeting to waive the requirement to have a grass shoulder between the sidewalk and roadway. The Applicant has stated that the Conservation Commission requested the grass strip be eliminated in the three wetland crossing areas to reduce wetland impacts. The following waiver from the Hopkinton Zoning Bylaw is requested: §210-113.C.1 Buffer minimum of 100 feet: The Applicant seeks a waiver from providing a 100’ buffer at the perimeter of the site to separate and/or screen the development from abutting properties. The proposed subdivision includes a roadway within the 100’ buffer of the project site on the southeast corner in order to minimize impacts to slopes greater than 25% and to accommodate Board of Health septic system regulations. 10 December 17, 2018 7:45 Continued Public Hearings – 52&55 Wilson Street – SWMP and Earth Removal – LNG Eversource 8:15 Bond Release Request – Davenport Village/Hayden Woods – Victor Galvani PUBLIC HEARING OUTLINE Bucklin St. Roadway Petition 10/29/18, 12/3/18 1. ✔ Project introduction and review – Applicant 2. ✔Principal Planner Comments 3. ✔ Consultant Review – BETA Group 4. Planning Board members and Public – Add to outline 5. Detail Discussion (a) Road design (b) Lot layout design (c) Stormwater management i. Impact on abutters on Pleasant St. (d) Utilities; Municipal water & sewer (e) Waiver requests (f) Conservation Commission review/ wetland impacts (g) Public safety (h) Legal right to make improvements 6. Public comment/discuss standards and plan revisions to be made 7. Discuss conditions of approval with applicant 8. Public comment 9. Vote 10. Close public hearing BETA GROUP, INC. 315 Norwood Park South, 2nd Floor, Norwood, MA 02062 P:781.255.1982 | F:781.255.1974 | W:www.BETA-Inc.com October 24, 2018 Department of Land Use, Planning, and Permitting Town Hall 18 Main Street, 3rd Floor Hopkinton, MA 01748 Attn: Ms. Georgia Wilson Mr. Don MacAdam, M.S. Principal Planner Conservation Administrator Re: Bucklin Street Road Constriction, Stormwater Management Permit and Notice of Intent Peer Review Dear Ms. Wilson and Mr. MacAdam: BETA Group, Inc. reviewed the proposed Bucklin Street project off Leonard and Pleasant Streets for the Petition to Approve Road Construction, Stormwater Management Permit and Notice of Intent in Hopkinton, MA in accordance with BETA’s agreement with the Town dated August 31, 2016. This letter is provided to outline BETA’s findings and recommendations of submitted documents. BASIS OF REVIEW BETA received the following items: •Petition to Approve Road Construction Paper Street Entitled “Bucklin Street” in Hopkinton, MA dated July 24, 2018 including: o Cover letter from Wall Street Development Corp o Declaration of Covenants, restrictions and easements o Form D Designers Certificate (2) •Plans entitled: Plan of Land “Parcel A – Bucklin and Leonard St.” Hopkinton Massachusetts dated March 29, 2018 revised July 18, 2018 prepared by GLM Engineering Consultants, Inc., Holliston, MA •Small Residential Lot Stormwater Pollution Prevention Plan (SWPPP) dated July 23, 2018 prepared by GLM Engineering Consultants, Inc. •Stormwater Operation and Maintenance Plan Maintenance Agreement Bucklin Street Hopkinton Massachusetts dated March 30, 2018 prepared by GLM Engineering Consultants, Inc. •Stormwater Management Permit Application •WPA Form 3 – Notice of Intent Hopkinton Wetland Protection By-law, date stamped April 11, 2018 including o USGS Map o 2014 Orthohophotograph o Hopkinton Bylaw Supplement to WPA Form 3 – Notice of Intent o Order of Resource Area Delineation from Town of Hopkinton Conservation Commission dated August 19, 2016 o WPA Form 2 – Determination of Applicability Ms. Wilson and Mr. MacAdam October 24, 2018 Page 2 of 6 o Abutters information •Stormwater Management Report Site Plan of Land “Bucklin Street” Hopkinton Massachusetts, dated March 30, 2018 prepared by GLM Engineering Consultants, Inc., Holliston, MA including pre and post development watershed maps •Plans (2) from Town of Hopkinton GIS •Incomplete application letter to Wall Street Development Corp. dated April 13, 2018 from Town of Hopkinton Conservation Commission SITE AND PROJECT DESCRIPTION The existing wooded 3.22± acre site is located on the north side of Leonard Street. The project site is located in the Residential A zoning district and the Water Resources Protection Overlay District. The plan depicts isolated wetlands on the southwest and southeast corners of the parcel. The site is not located within a critical area (MassDEP Approved Zone II), NHESP mapped areas of estimated habitats of rare wildlife or rare species or FEMA mapped 100 year flood zone. NRCS soils maps indicate the soils on site include Rainbow silt loam with a hydrologic soil group (HSG) of C/D (very slow infiltration rate). The project proposes to construct a 700± foot long, 20 foot wide road and subdivide the lot into 4 new lots with public water, sewer services and stormwater management system. Proposed stormwater management system includes the construction of road swales in series ultimately connecting to a new drainage basin. REQUESTED WAIVERS REVIEW The Applicant has requested the following waivers from the Rules and Regulations Relating to the Subdivision of Land: W1.Accept no Environmental Analysis (§5.4) W2.Accept no Traffic Impact Report (§5.4) W3.Waiver from road location and alignment (all sub-sections) (§8.2.1) W4.Waive curbing requirements (all sub-sections) (§8.2.2) W5.Allow variable width right of way and 20' paved road width (§8.2.3) W6.Allow no turnaround for dead end street (§8.2.5) W7.Allow no sidewalks (§8.3) W8.Waiver from stormwater management (§8.4) W9.Allow above ground private utilities (§8.7.1) W10.Accept no street lights (§8.7.2) W11.Accept 4" x 4" x 3' concrete bounds (§9.11) W12.Accept no street trees (§9.12) BETA recommends the Applicant add the following waiver requests. W13.Allow dead end streets to exceed 500 feet in length (§8.2.5.B). W14.Allow side slope shall not exceed a ratio of three horizontal to one vertical (§8.2.6) Ms. Wilson and Mr. MacAdam October 24, 2018 Page 3 of 6 ZONING/REGULATIONS REVIEW Article II Residence A (RA) District The proposed subdivision plan lots comply with area, lot coverage, frontage, and yard setbacks of the Residential A District. Article XII Water Resources Protection Overlay District The project is located within the Water Resources Protection Overlay District and requires approval for any use that renders impervious more than 15% or 2,500 square feet of any lot, whichever is greater. Refer to Stormwater Management section for review of required infiltration practices. ROAD CONSTRUCTION/SUBDIVISION REVIEW The proposed project includes the extension of an existing driveway into a 20’ wide paved roadway. The location of the roadway is between two existing residences (58 & 62 Pleasant Street). Based on the proposed profile there will also be some regrading required between them. The new roadway will eliminate the driveway for no. 58. No curbing is proposed and the road is not crowned but is designed to slope to the south side for drainage purposes. Other than those items and those listed in the Requested Waivers Review, the road meets the minimum design standards for a rural road. GENERAL: G1.Provide missing existing and proposed topography for the proposed road from Pleasant Street to the project parcel. G2.Provide driveway culvert crossing detail. G3.Provide a driveway for the existing house at 58 Pleasant Street off new road. G4.Provide location of proposed private utilities. TRAFFIC IMPACT ANALYSIS REVIEW A traffic impact analysis was not provided at this time for review. T1.Show sight distances on the plans of at least 200 feet in accordance with §8.2.1.E. T2.Provide truck turning plan to demonstrate that emergency vehicles have adequate space within Bucklin Street to turn around. BETA recommends evaluating alternatives to relying on a private driveway for the turn around. T3.Show and label turning radii on the plans and demonstrate that adequate turning radii are provided at the intersection of Bucklin Street and Pleasant Street. STORMWATER MANAGEMENT PERMIT The existing site is wooded and slopes from the eastern side downward to the western side of the site. Stormwater currently flows overland to the northwest portion of the site. Although the site has some slope (2.2%±), a significant portion of the site is flagged as isolated wetlands indicating the presence of Ms. Wilson and Mr. MacAdam October 24, 2018 Page 4 of 6 high water table and or poor draining soils both or which require special attention when designing a stormwater management system to mitigate the impacts of development. The project proposes to extend an existing driveway into a new 20’ wide paved road, Bucklin Street. Runoff from Bucklin Street will drain to a series of grass swales. Runoff from proposed houses will be directed to subsurface infiltration chambers with overflows to the new grass swales. The proposed grass swales are connected with 12” reinforced concrete pipe under the four new driveways, which drain to a new basin on the western edge of the project site. The new basin consists of a sediment forebay and headwall with an outlet to a level spreader draining to the west. SW1.Provide calculations that indicate swales and driveway culverts can accommodate 25 year storm event (§8.4.8). SW2.Include stamp and signature of a Professional Engineer to certify that the Stormwater Management Plan is in accordance with the criteria established in the Bylaw and the Regulations (Appendix B, §21). MASSACHUSETTS STORMWATER MANAGEMENT STANDARDS: The project is subject to the Stormwater Management Standards (Stormwater Regulations (SWR) 7.0). The following are the 10 standards and relative compliance provided by the submitted documentation. No untreated stormwater (Standard Number 1): No new stormwater conveyances (e.g., outfalls) may discharge untreated stormwater directly to or cause erosion in wetlands or waters of the Commonwealth.The project does not provide new untreated stormwater conveyances to wetlands – complies with standard. Post-development peak discharge rates (Standard Number 2): Stormwater management systems must be designed so that post-development peak discharge rates do not exceed pre-development peak discharge rates.Calculations demonstrate that the proposed development will not increase peak discharge rates. This standard should be re-evaluated upon addressing all included comments. SW3.To accommodate offsite stormwater runoff that flows onto and through the site, include the upland areas that contribute runoff to the project parcel in both existing and proposed watershed maps and calculations, up to and including runoff that crosses where new road will be between the existing houses off Pleasant Street. SW4.To better determine impacts to abutters analyze pre and post stormwater runoff at three analysis points (one along north property line, second along the west property line and third to Pleasant Street). SW5.BETA calculates the 100 year storm at 7.25 in (from Atlas graph page 22) x 1.13 = 8.19 in. Revise calculations using this rainfall amount. SW6.To avoid double counting infiltration, model infiltration basin with a CN of 98 – water surface. Recharge to groundwater (Standard Number 3): Loss of annual recharge to groundwater should be minimized through the use of infiltration measures to maximum extent practicable.Groundwater recharge calculations were provided –refer to comment SW2 above. SW7.The south side of the infiltration basin is 30± from flagged vegetated wetlands which has a surface elevation of 501.8±. Provide an additional test pit in the southwest corner of the basin to confirm that there will be 2 feet of separation from the bottom of the basin to seasonal high groundwater elevation. Ms. Wilson and Mr. MacAdam October 24, 2018 Page 5 of 6 SW8.Provide a cross section for the proposed drainage basin. Include subgrade materials and depths as well as slopes and stabilization methods. SW9.Provide detail of sediment forebay outlet weir and stormwater basin emergency overflow. SW10.Provide draw down device in stormwater basin for maintenance. SW11.Provide monitoring well in stormwater basin. SW12.Provide landscape plan describing the woody and herbaceous vegetative stabilization and management techniques to be used within and adjacent to the stormwater practice (Appendix B, §20). SW13.In order to maintain level flow from level spreader, provide revise level spreader detail to include a hard level surface (curb or equivalent) for the weir. 80% TSS Removal (Standard Number 4):For new development, stormwater management systems must be designed to remove 80% of the annual load of Total Suspended Solids. The proposed project includes a new infiltration basin (with sediment forebay) and calculations to demonstrate 80% TSS removal – standard has been met. Higher Potential Pollutant Loads (Standard Number 5): Stormwater discharges from Land Uses with Higher Potential Pollutant Loads require the use of specific stormwater management BMPs.The proposed project is not a LUHPPL –standard does not apply. Critical Areas (Standard Number 6): Stormwater discharges to critical areas must utilize certain stormwater management BMPs approved for critical areas.The proposed project does not include stormwater discharges to critical areas –standard does not apply. Redevelopment (Standard Number 7): Redevelopment of previously developed sites must meet the Stormwater Management Standards to the maximum extent practicable.The proposed project is not a redevelopment of a previously developed site –standard does not apply. Construction Period Erosion and Sediment Controls (Standard Number 8):Erosion and sediment controls must be implemented to prevent impacts during construction or land disturbance activities.A Stormwater Pollution Prevention Plan (SWPPP) was provided as well as an erosion control plan. SW14.Provide estimates of the total area expected to be disturbed by excavation, grading, or other construction activities, including dedicated off-site borrow and fill areas (Appendix C, §3.a). SW15.Provide the intended sequence and timing of activities that disturb soils at the site and the general sequence during the construction process in which the erosion and sediment control measures will be implemented. SW16.Provide provisions to protect the infiltration basin from sedimentation during construction. Provide note that basin is to be initially excavated 12 inches higher than finish grade. Once site is stabilized basin can be excavated to finish grade. SW17.Recommend including a condition that requires the Applicant provide a final signed SWPPP prior to construction. SW18.Recommend a condition that the Town or an agent for the Town observe the excavation of the infiltration basin prior to loam and seed to verify design assumptions including groundwater elevations and infiltration rate. Ms. Wilson and Mr. MacAdam October 24, 2018 Page 6 of 6 Operations/maintenance plan (Standard Number 9): A long-Term Operation and Maintenance Plan shall be developed and implemented to ensure that stormwater management systems function as designed. SW19.Show location of vehicle access to drainage basin and easement on the plans. SW20.Provide a map showing the location of the systems and facilities including easements, catch basins, manholes/access lids, main, and stormwater devices to be included with the Operation and Maintenance Plan (Appendix D, §2). SW21.Include provisions for the Planning Board or its designee to enter the property at reasonable times and in a reasonable manner for the purpose of inspection within the Operation and Maintenance Plan (Appendix D, §3.e). SW22.Provide signature(s) of the owner(s) on the Operation and Maintenance Plan (Appendix D, §3.f). SW23.Provide an estimated operations and maintenance budget. Illicit Discharges (Standard Number 10): All illicit discharges to the stormwater management systems are prohibited. SW24.Provide a signed Illicit Discharge Statement. WETLANDS The proposed project includes work within the 50’ and 100’ buffer zones of two isolated wetlands. The design plans indicates that the development of lots will create a berm on the north, down gradient side of the wetlands. Applicant has submitted a Notice of Intent for the proposed work within the jurisdictional wetland resource areas. W1.Applicant should provide information on the protection of home from potential flooding and/or groundwater issues and that foundation drains and subdrains that could impact wetlands will not be necessary. Very truly yours, BETA Group, Inc. Jillian Bokoff Philip F Paradis, Jr., PE Staff Engineer Associate O:\6200s\6260 - Hopkinton - Bucklin Street\Engineering\Reports\Buckland St Peer Review 10-24-18.docx PUBLIC HEARING OUTLINE 18 Cedar Street – Off-street Parking Special Permit Meeting Dates: 12/3 1) Project introduction and review – Applicant 2) Principal Planner Comments 3) Consultant Review – BETA Group 4) Planning Board members and Public – Add to outline 5) Detailed Discussion a) Site and parking lot layout design b) Parking lot details i) Safety of internal circulation ii) Fire and public safety access iii) Snow storage iv) Landscaping/Screening/Buffering 6) Discuss status of other Board approvals (Board of Appeals) 7) Discuss Special Permit standards and plan revisions to be made 8) Discuss conditions of approval with applicant 9) Public Comment 10) Vote on Special Permit approval and conditions 11) Close Public Hearing TOWN OF HOPKINTON PLANNING BOARD 18 M,\IN STREEI' HOPKINTON, MA (] I74I] 508,497-9755 505-497-9702 (fhx) \Tr lrcp[nnoilx s.! Application for Special Permit Thc uhdcrsigned hercby applies io thc Town olHopkinton Planning Board to grant a Special Permit for thc fcasons hefeinaftcr ssl 1'L'|1lr and in ar-cordance with the applioable prcvisions ofthe Zoning Bylaw pcrtaining to the herein descfibed prcrniscs. Dal"'| 9€rc. (o, 7-o 18 Applicant(s): SOrLtce 9. 91461,"1,tt Signalufc(s)l Mailing ALILlr e(s: lB llA-tu e Dr1.1inrc Tclcphonc: Signaturc(s): M.riling \ddr(:s:(S A*z;c 5s1 Owne(s) of l{ccoIdl t €> L.C<.Ja"'t; <z 9 E n-,t Lti s 6ta-53-qrlo Email: j e frr^ g(( u3{ Narre of Design Pfofbssional. if any: Mailing Address: 1666 /''''t, 0 Dayi.ne f eleph,'ne: f6lfli1 1!).f1 |.tntit: ,{ddress uf Snbjccl Proncrtic\: IB Ce oap 9-rpu-€r Proicct Name. ifany: la^n\s(:.ulsPlupcll)lD\Lrnb!f,{li\rdll\.4rp,Ulu(^altotn":.r Mhf: L)-tC0u<4-, Io+ Lor, 0 Is an amendmcnt to a prcvioUsly issucd Spccial Pcnrlit requestedl It'\ e.. plcasc indita.c l1c dJtc.'r :\\urnc(: List al1 zoning district(s) in which the properlies are located, including oveday districts: bp Are all real estatc taxes and other assessments to the 'l own current? X Yes No lndicate below the Special Pemit(s) requested by this application: I Off-street Parking Facility in a Business (B) District ($ 210-19c) n Off-Sheet Parking Facjlity in a Downtown Business (BD) Distriot (i 210-20.3c) tl Shared and Ofl'-Site Parking (g 210-124) f Parking Space Reduction (g 210-124.D) lJ Common Driveway ($ 210-120) t HotelOverlay District Use (g 210-20.3G) L Ofiice Park Distriot Use (g 210- 185) li Open Space and Landscape PreseNation Development Concept Plan (Article XVlt) t Campus Style Developmcnt (Adiclc XIV) l.) Village Housing in Residential Districts (Article XTIIA) D Garden Apartments in Residential Distriots (Article Xlll) f,, llexible Community Development (Afticle Xl) Ll Commercial Solar Photovoltaic Installations (Article XXXI) f Drive-in, Drive-through or Drive-up Uses (g 210-19,D, g 210-20.3.D, $ 210-24.F) lJ Registered Marijuana Dispensary (Article XXXIII) V $het 1FP- 9fe66r Fh?-Ktrc, ( o.2).4 A) Supplemental lnformation Common Dfiveway Applications Only: Will an Approval-Not-liequired (ANR) plan be submined to the Planning Board to qeat€ or modify the lots which will share the common driveway? ll Yes fl No Will a definitive subdivision plan be submitted to the Planning Board to create or modify the lots which will share the common driveway? f Yes 1l No Hotel Ow ay District and Ofrce Pa& Dirtricr Applications Only: List specific uses reclugstod: Procedure 1. Special Permit applications must be fiied by the applicant with the Town Clerk. 11/16/2015 A public hearing will be scheduled by the Department ofl,and Use, Planning & perrnitting (the " Depatment" ) and the hefling hdd within 65 days of recd pt of a mmplde application. The Department will publish a legal notice in the Metrowest Daily News, for which the applicant will receive the bill directly from and payable to the newspaper. The Department will notily obutters by first class mail ofthe publio hearing. Either the applicant or a representative is expected to appear at the public hearing to explain the request. The Planning Board must filc a decision with the Town Cled,i witlin 90 days ofthe close of the public hearins. Submission Requiremcnts Applicants must atlach and/or submit the following information with thc application fbrm. please note that all matedals, including this application. rnust be submitted on paper ed eleotronioally. For guidance 6 to the format of d ectroni c submissi ons, see the H atni ng B oard's adopt€d Administrative Rules. I Fees. in accordance with the Fee Sched! e l- All required copies ofplans, materials and documentation, in accordance with the Submissiorl Rcquirements specitlc 1() each Special Pcflnit reqlLesl. Applications will not be considercd complete unlil alllhe roquircd rnaterials are suhmittcd. i A desoription ofhow the speoial pefrnit, il'issued, will bc in harmony wi(h the general pLlrpose and intent ofthe Zoning Bylaw, and how it will confbnn to any specific decision cfilefia cootained in tbs Zoring Bylaw applicable Lo thc reques!. f,, Certified list ofabutters wilhin 300 Jbct ol'thc propcrty, from the Board ol'Assessors office. The list shall include abufters across any strcet and in adiaccnt comrnunilies, where applicable. The Iist ofabuttcls shall have becn oeftificd $,ithin 90 days ofthe date of submission, L TVo envclopes lbr each abutter on the ceriified list ofahulters, slampe.l with posrage sullio ient to sond first class mai I to cach, and I 2 enve lopes stampcd with first class postage for the rcquired notification to abutting oommunitics. An applicant may request, in writing, that the Planning Board waive specific submisston requirements. The Board rnay waive the submission of specillc items if it detennines that the item is not necessary or not applicablc 1o a specific project or application. lfa Special Permit application is submittcd concunently with a Sitc Plan Review application, then the materials required shall be cumulalive, with the exception ofthe nrrmber ofenvelopes and postage for each abuttcr and the abutters list. All inlormation may be shown on one set ofplans. tr'ee Schedule If more than one Special Permit is requested by an application, the administrative fee shall be the highest individual lee required regardless ofthe number of Special Permits requested. The consultant review fee shall be the sum ofthe two highest required. lfthis applicarion is submitted concurrently with an application for Site Plan Review, the administrative lee shall be the highest 2. 3. 4. 5. 11,162015 ofthe individual fees, and shall not be cunulativer. The consultant review fee shall be the sum of the two hishest required. Special Permit ADDlicalion Amendment Special Permit Administrativc Consultant Rcvierv Administrative Fee Consultrnt R€vi€w F€e Off Street Parking Facility $r,200.00 $2,000.00 $s00.00 $1,000.00 Shared and Off Site Pa&ins $1.200.00 $2,000.00 $500.00 $1.000.00 Patkins SDace Reduction $100.00 None $300.00 None Common Drivewats $500.00 $1,800.00 $1,s00.00 $200.00 $s00.00 Hotel and/or accessory uses in the llotel Overlay District $2,000.00 $500.00 $1,000.00 Office Park District uses: Residential dormitory component ofa oonf€rence centcr; Public transDortalion facilities $600.00 $2,000.00 $500.00 $1.000.00 Office Park District use: Continuing carc retirement community, assisted living facility or similar institution $ r,800.00 $2,000.00 $500.00 $ 1,000.00 Campus Style DeveloDment $600,00 $r.000.00 Nune NOne OSLPD Concept Plan $600.00 plus $50.00 fbr every lot above 5 I to 5 lots: $1,000.00 6 or nore lots: $500.00 per lot None None Garden Apartments in Residential Districts $500.00 plus $10.00 per dwelling unit $2,000.00 plus $500.00 for every 5 acres over 30 acres $400.00 Village Housing $150.00 plus $3.00 pcr dwellins unit $2,000.00 plus $500 for cvcry 5 acres over 20 acres $400.00 Flexible Comrnunity Development $1,000.00 $1,000.00 plus $10 00 per dwelling mi1 $50.00 if no public hearing requrred; $100.00;f public headng requlred $500.00 Flexible CommuDity Development - Request lbr Extension $50.00 None NA NA Commercial Solar Photovoltaic Instal lation $s00.00 $r,500.00 $100.00 Actual cost Drivc-in, Ddve-through or Drive-up Uses $250.00'None $50.00 Rcsistered Mariiuana $600.00 $1.500.00 $100.00 11/t6nD15 Dispensary All Orher Soecial Permits $100.00 $1.000.00 $300.00 Achral cost I The administrative fee lequired with the Special Permit Application for drive-in, drive-tluough or drive-up uses is $0 if submitted ooncurently with an application for Sito Plan Revrew. 't1/t6t20t5 Off-Street Parkine Facility. Shared and OIf-Site Parkins. parkine Space Reduction -Submission Requirements l. Ten (10) paper copies ofthe following documents and information in narfativc folm. as applicable to each specific Special Pcmit request. Include proposed mitigation. (a) A statement describing why an application lbr a Special permit has been submitted, i nd udi ng the epl icart' s obj ectives and why the Planni ng Board shoul d grant the requed. (b) A list all other required permits and approvals lbr the project/facilily and the status ofcach. (c) A descr;ption ofthe currcnt Lrsc ofthc pfoperty. (d) ldentification ofthe entitics intended to own, operate and maintain the property and any buildings and f:icilit;cs thereon. (e) Proposed lbrms ofdeed restrictions and any othef existing or proposed agrccments botween plopefty owners within and r:utsirlE ofthe propefly, ifany. (f) An environmental analysis ofthe impact ofthe projcct/facility, including an evaluation of prc-dcvclopmont oonditions and post-dev|3loporent uunditiuns on surl'aco and groundwater quality, grolrndwaler recharge, wildlife habitat and corridors, wetlands and bodies ofwater, including streams and rivers, and all doournentation and calculalions related thefeto. (g) A traffic impaot and access study on tlre impact ofthe pro.jecr/facility on the operalion, safety and overall convoniencc ol'the roadway system providing access to the lhcility/proioci. Such study shall illuluclc the impacls on vehicular and pedesutan uavel on such roadway systems, pedestrian conneotions. proposed vehicle mitigalion and trip reduction techniques, and all documgntation and calculatiolts rclated thereto. (h) Cumulative calculation ofparking spaces required for all existing and proposed uses ofthe prope(y, based on the Off-Street Parking requirements in $ 210-124. (i) A detailed list ofall uses proposed and/or approved which will be subject o[ a shared or reduced parking special permit. lnclude specillo data frorn a rccognized professional source indicating thc peak hours ofcach rlse and a table which shows the number of parking spaces required fbr each use and the number rcquested for each use. 2. Ten ( 10) copi€s of a plar Sd at a scale of 1" =;10', on shed sizes 24" x 34" and one reduced plan set on 11" x 17' peer, prepared by a registered professional engineer, registered architect or registered landscane architect, unless indicaled othenvise by the Board, which shows the inlbrmation below, at aminimum. Ifthe Special Permit applioation accompanies a Site plan Review application. the plans required for each rnay be combined into one. (a) Locus plan at a scale of 1" = 800 . t1l16DAts (b) Existing Conditions Plan which shows the entire property, zoning dist ct boundaxies, . property boundaries and easements, struotues on adjacent properties within 50 ft. ofthe pioperty line! topogaphy at 5 ft. contour intervals, vegetative oover, wetlands, wator bodies, historic struotures, roads and ways, significant onvironmental features suoh as ledge outcrops, soenic views and large trees, and the location, size and shape of struotures and a notation as to whether thcy will be removed or rotaingd. (c) Plans which show the proposed layout ofthe property including proposed struotues with the setbacks ond oxtcrior dimensions.noted, the gonoral proposed looation, size and intended uses ofany open space, pedestrian and bioycle trails, the location ofexisting and proposed roads, driveways and utilities, and the layout ofpropo$ed parking spaoes on and offthe propcrty whioh aro subjeot ofthe rcquest or modified by the Nquest. (d) A plan showing thc proposed layoux ofall parking spaces which are cumulatively required for eaoh usc on tho premises subjoot ofthis application and a notatio[ iidicatiflg whioh, il any, arc proposed to be held in resgrve and constructed at a later date, tt/1612015 PUBLIC HEARING OUTLINE Whisper Way Subdivision Definitive Subdivision Plan application showing 24 building lots. Meeting Dates: 8/27/18, 10/01/18, 10/29/18, 11/19/18, 12/3 1. √Principal Planner Overview of Site and Project 2. √Project introduction and features of the site – Applicant & Engineer 3. √Principal Planner Comments 4. √Consultant Review – BETA Group 5. √Planning Board members and Public – Add to outline 6. √Schedule Site Walk 7. Detailed Discussion a. √Road and lot layout design b. √Traffic a. √Offsite Improvements – Whisper Way i. Impacts to Abutters from any road widening b. √Sidewalks c. √Pedestrian/Bicycle Safety c. Stormwater management d. √Utilities – Water, Septic, Gas, Electric, Phone, Cable a. √Septic Systems/Bedroom Numbers e. Open space/remaining land ownership & access a. Trails f. Review by other Boards/Committees a. Conservation g. Construction Management a. Impacts to abutters during construction b. Construction Process h. Final BETA issues 8. Discuss requested waivers 9. Discuss standards and plan revisions to be made 10. Discuss conditions of approval with applicant 11. Public comment 12. Vote 13. Close public hearing BETA GROUP, INC. 315 Norwood Park South, 2nd Floor, Norwood, MA 02062 P:781.255.1982 | F:781.255.1974 | W:www.BETA-Inc.com November 16, 2018 Department of Land Use, Planning, and Permitting Town Hall 18 Main Street, 3rd Floor Hopkinton, MA 01748 Attn: Ms. Georgia Wilson Mr. Don MacAdam, M.S. Principal Planner Conservation Administrator Re: Whisper Way Definitive Subdivision Peer Review Dear Ms. Wilson and Mr. MacAdam: BETA Group, Inc. reviewed the supplemental/revised documents for the proposed Whisper Way Definitive Residential Subdivision Plan. This letter is provided to update BETA’s findings and recommendations of submitted documents. BASIS OF REVIEW BETA received the following supplemental/revised documents: •Response to BETA’s Review Comments, dated November 2, 2018 prepared by Guerriere & Halnon, Inc., Milford, MA •Plans (24 sheets) entitled Whisper Way a Definitive Open Space Subdivision in Hopkinton Massachusetts,dated May 24, 2018 and revised to November 2, 2018 prepared by Guerriere & Halnon, Inc., Milford, MA •Stormwater Report “Whisper Ridge Open Space Subdivision” Hopkinton, MA dated March 24, 2018 and revised to November 2, 2018 prepared by Guerriere & Halnon, Inc. •Plans (2 sheets) entitled Pre- and Post-development Drainage Plans,dated May 24, 2018 and revised to November 2, 2018 prepared by Guerriere & Halnon, Inc. •Plan (1 sheet) entitled Soil Map Plan Whisper Way in Hopkinton, MA dated November 2, 2018 prepared by Guerriere & Halnon, Inc. COMPILED REVIEW LETTER KEY BETA reviewed this project previously and provided review comments in letters to the Board dated August 8, 2018 and September 28, 2018 (original comments and responses in standard text). Guerriere & Halnon, Inc. (GH) provided responses (responses in italics) and BETA provided comments on the status of each (status in bold standard text). PROJECT OVERVIEW The 39.9± acre parcel includes three lots and is located on the south side of Wood Street and on the west side of Route 495. The site is located within the Agricultural Zoning (A) District, Residence B (RB) District and the Water Resources Protection Overlay District (WRPOD-1). Ms. Wilson and Mr. MacAdam November 16, 2018 Page 2 of 12 The site is predominately wooded with mapped wetlands and exposed ledge/rock. Whisper Way is currently a 12 to 14 foot wide stone dust access road 800 feet long providing access to three existing residences and a parking area at the cul-de-sac for the open space to the north. A forth residence is located on the northeast corner of the lot where Wood Street intersects with Route 495. There are no FEMA mapped 100 year flood zones within the project limits. NRCS soils maps indicate a variety of soils which may make it challenging to infiltrate stormwater on site. The plans indicate that there is public water available in Wood Street but no public sewer therefore on-site sewer treatment will be necessary. The proposed subdivision plan depicts the reconstruction and extension of Whisper Way a total of 3,515± feet of road to provide access to 22 new lots, 2 of the existing 4 homes on the site will remain and the project will create of 26.2± acres of open space. REQUESTED WAIVERS REVIEW From Rules and Regulations Relating to the Subdivision of Land, Town of Hopkinton, December 15, 2014 W1.§5.4.1.N Definitive Plan Contents: The Applicant seeks a waiver from providing cross sections of each street at 50 foot intervals (71 cross sections total). W2.§5.4.1.R Definitive Plan Contents: The Applicant seeks a waiver from trees to be retained within the right-of-way. Due to the narrow width of the right-of-way and proposed grading, trees are not proposed to be retained within the right-of-way. W3.§5.4.1.Y Definitive Plan Contents: The Applicant seeks a waiver from providing street lights within the subdivision. W4.§8.2.7.A Disturbance to Natural Topography: The Applicant seeks a waiver from fill of an area in excess of 8 feet in depth. Depths of fill greater than 8 feet are required for wetland crossings at stations 1+50 and 30+00. W5.§8.2.7.B Disturbance to Natural Topography: The Applicant seeks a waiver from the construction of roads, stormwater management systems, driveways, pipes or other infrastructure construction on a land area which slopes at a grade of 25% or more. From Zoning Bylaws: Chapter 210, Town of Hopkinton, September 2017 W6.§210-113.C.1 Buffer areas: The Applicant seeks a waiver from providing a 100 foot buffer at the perimeter of the site to separate and/or screen the development from abutting properties. The proposed subdivision includes a roadway within the 100 foot buffer of the project site on the southeast corner in order to minimize impacts to slopes greater than 25% and to accommodate Board of Health septic system regulations. ZONING ARTICLE III RESIDENCE B (RB)DISTRICT The proposed subdivision complies with setback, yard requirements and lot coverage; however, it does not comply with minimum lot area. The zoning requirements for Residence B are superseded by zoning requirements for Open Space and Landscape Preservation Development. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 3 of 12 Z1.Clearly label proposed lot frontage for each lot on the plans.GH: The Registry Plans have been revised to show all frontages.BETA2: Plans revised – issue resolved. ARTICLE V AGRICULTURAL (A)DISTRICT The proposed subdivision complies with setback, yard requirements and lot coverage; however, it does not comply with minimum lot area. The zoning requirements for Agricultural are superseded by zoning requirements for Open Space and Landscape Preservation Development. ARTICLE XI FLEXIBLE COMMUNITY DEVELOPMENT BYLAW Z2.Indicate the number of affordable units provided on the plans.GH: The applicant has indicated that two of the units will be affordable.BETA2: BETA recommends a condition to provide confirmation of the required affordable units on the final plans. ARTICLE XII WATER RESOURCES PROTECTION OVERLAY DISTRICT The project is located within the Water Resources Protection Overlay District and requires approval for any use that renders impervious more than 15% or 2,500 square feet of any lot, whichever is greater. Refer to Stormwater Management section for review of required infiltration practices. The shared septic system will require approval by Hopkinton Board of Health and in accordance with MassDEP Title 5. ARTICLE XVII OPEN SPACE AND LANDSCAPE PRESERVATION DEVELOPMENT The proposed development meets the requirements of the Open Space and Landscape Preservation Development with the exception of the 100 foot buffer requirement. The Applicant is seeking a waiver for this requirement as described in comment W6 above. A Concept Plan was previously submitted for the proposed subdivision on January 8, 2018. Z3.Provide confirmation that structures used for residential purposes meet the height requirements of §210-121.GH: The height of the buildings will be evaluated at the time of the building permit issuance. All buildings will be meet the BETA2: BETA recommends a condition to provide confirmation that the required building heights are met prior to construction. ARTICLE XVIII SUPPLEMENTARY REGULATIONS (AS APPLICABLE) The proposed subdivision meets all supplementary regulations as applicable. RULES AND REGULATIONS RELATING TO THE SUBDIVISION OF LAND CONTENTS (§5.4) Individual lots will be serviced by Town water systems. The shared septic system providing sewer services to new residences will require approval. No street lighting is proposed at this time. C1.All lots shall be assigned street numbers in consultation with the Director of Municipal Inspections (§5.4.E).GH: The Building Department will not issue house numbers until the Ms. Wilson and Mr. MacAdam November 16, 2018 Page 4 of 12 subdivision is approved by the Planning Department. BETA2: Issue will be resolved upon acceptance of the plans and issuance of house numbers by the Building Department. C2.Show location of the subdivision in relation to the existing street system on the locus plan (§5.4.1.F.).GH: The locus has been revised.BETA2: Locus map revised – issue resolved. C3.Provide proof of secured easements outside the area where conditions exist requiring such easements (§5.4.1.G.).GH: There are no easements required outside of the subdivision.BETA2: Easements within the area are shown on the plans. Easements outside of the project site are not proposed – issue resolved. C4.Include a typical cross section for each street on the Profile Plan (§5.4.1.M.).GH: The street cross sections have added to the profiles.BETA2: Typical sections provided – issue resolved. C5.Show locations of percolation tests for proposed septic system on the plans. Indicate dates of all soil tests on the plans (§5.4.1.BB.).GH: The percolation tests have been added to the septic design sheet.BETA2: Soil test data locations shown – issue resolved. DESIGN STANDARDS (§8) Streets The plans depict a 22 foot wide road with profile grades between 0.67% and 8.57%. The road consists of modified Cape Cod berms and a 5 foot wide sidewalk on one side. D1.Revise plan to provide a minimum required curve radii of 150 feet at STA 26+00± (§8.2.1.D).GH: The plans have been revised.BETA2: Plans revised – issue resolved. D2.Show dimensions for proposed sight distances on the plans in conformance with §8.2.1.D-E. GH: A note was added to the plan stating at least 200-feet of sight distance shall be provided.BETA2: Provide a sight-distance plan and confirm that no streets intersect any other street at less than 60 degrees (§8.2.1.F). BETA3: Plans revised – issue resolved. D3.Show curb radii on the plans in conformance with §8.2.1.G. GH: Curb radii has been labeled as 20-feet.BETA2: Plans revised – issue resolved. D4.Show and label proposed right-of-ways on the plans in conformance with §8.2.3.A. GH: Right of way widths have been labeled.BETA2: Plans revised – issue resolved. D5.Provide an explanation for a different typical section for road from STA 0+00 to 3+29. Grading plan should match. Also consider impact on flow to catchbasins at STA 3+29.GH:The road cross section shifts from a crown to superelvated to pitch the water to a water quality inlet and discharge the treated water on site.BETA2: Grading plans still indicate a proposed crown on the road. Provide additional proposed contour labels and/or spot elevations to demonstrate proper drainage to catch basins and to the water quality inlet. BETA3: Consider removing the proposed curb and adding an infiltration (country) swale along the eastern edge of the proposed road at approximately STA 34+50 to allow a greater area for stormwater runoff treatment and infiltration. D6.Revise profile so new road meets the existing grade at Wood Street at STA 35+63. GH: The road profile has been revised to intersect with the existing grade.BETA2: Profile revised – issue resolved. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 5 of 12 CONSTRUCTIONSTANDARDS (§9) The applicant seeks a waiver for street trees, fill in excess of 8 feet and construction on areas with slopes greater than 25% as noted above in section, Requested Waivers Review. CS1.Show proposed sidewalk material and subgrade details per §9.7.3., refer to comment D5 above. GH: The detail has been revised to show asphalt depth and base material.BETA2: Detail revised – issue resolved. CS2.Provide a detail for proposed driveway aprons in conformance with §9.9. GH: A detail of the driveway apron has been added to sheet.BETA2: Detail provided – issue resolved.BETA3: Detail provided – issue resolved. CS3.Provide stone or reinforced concrete bounds (not rebars) on both sides of street right-of-way at all angle points and at beginning and end of all curves (§9.11.1). GH: A detail has been added to the plans and a note where to install the bounds BETA2: Detail and note not found – issue remains outstanding. BETA3: Detail provided. Bound symbols on plans do not match symbols in legend, revise for consistency. CS4.Provide a street tree planting plan with planting schedule in accordance with §9.12.GH: A note is located on the detail of the street tree planting indicating the location and species of street trees.BETA2:Plans revised – issue resolved. ADDITIONAL PLAN COMMENTS G1.Provide full-size original PDF’s (including watershed maps) of all plans (not scanned).Plans provided – issue resolved. G2.Turn off layout data on grading plans to make them more legible.GH:Plans have been revised for clarity.BETA2: Revise to eliminate text conflicts on grading plans. G3.Enlarge text/details for better clarity/visibility (minimum .10 inch text height).Plans revised issue resolved. G4.Provide north arrow on grading plans. GH:North arrows have been added. BETA2: Plans revised – issue resolved. G5.Provide all grid elevations on profiles. GH:Grid elevations have been added to the profile plans. BETA2: Plans revised – issue resolved. G6.Provide disposition of pipe crossing road at STA 5+65, this appears to feed wetland/vernal pool on northwest side of road. If it is to remain, report on its condition. Correct the elevation on profile. GH: The existing 8" PVC pipe will be removed and a precast drop inlet with a grate will be added installed with a new 12" HDPE pipe. BETA3: Provide the following: a.A culvert profile, to scale, from wetland to pipe outlet on the south side of the proposed road. b.Culvert calculations to show a 50 year capacity (§8.4.8). G7.Show delineation of wetland on lots 23 & 24 more definitively on grading plan. GH: The wetland has been shown clearer. BETA2: Plans revised – issue resolved. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 6 of 12 G8.Identify structure/detail for half circle at approximately STA. 5+50 to 70 right. GH: The existing 8" PVC pipe will be removed and a precast drop inlet with a grate will be added installed with a new 12" HDPE pipe. BETA2: Revise/correct contours in this area. Refer to comment G6 above. G9.Provide access to existing open space parking area at STA 7+20 right. GH:The curb is cape cod and will be backed up with gravel. The parking area will have a fresh layer of gravel installed. By maintaining the curb in this area it will direct the water to the catch basin and keep the water off the gravel. BETA2: Provide sufficient grading for the parking area. Show the limits of grading and gravel to be added on the plans. G10.Show proposed driveway or any changes to the existing driveway for Lot 2. GH: The new location of the driveway is shown. BETA2: Proposed driveway not shown – issue remains outstanding. BETA3: Plans revised – issue resolved. G11.Label, dimension, and detail all parking areas locations on the plans. Revise Lotting Plan to match locations. Coordinate with current and potential path locations. GH: The lotting plan has been revised.BETA2: Revise Lotting Plans to show trailer parking at approximately STA 31+00. G12.Provide a label and detail for the sidewalk area proposed at approximately STA. 5+50. GH: The sidewalk has been shown along the retaining wall.BETA2:Clarify plans by clearly delineating limits of walls. G13.Provide earth removal calculations. Include provisions for erosion control and dust control in accordance with Town of Hopkinton General Bylaws §96-3 (September 2017). G14.Provide a minimum of 15 feet wide vehicle access and maximum 5:1 slope for maintenance for each stormwater basin.GH: Access driveways have been added. BETA2: Plans revised – issue resolved. G15.Revise plan to relocate sidewalk along Wood Street, it appears to be proposed in the existing street. GH: The sidewalk is proposed between the guardrail and the solid white line. There is 7- feet available to install a 5-foot wide sidewalk and a asphalt berm with an 8-inch reveal.BETA2: Current set of plans shows no new sidewalk on Wood Street. TRAFFIC IMPACT ASSESSMENT A traffic impact assessment was not provided for review at this time. STORMWATER MANAGEMENT The 39.9± acre parcel includes three lots and is located on the south side of Wood Street and on the west side of Route 495. The site is predominately wooded with mapped wetlands and exposed ledge/rock with a variety of soil types ranging from HSG A (high infiltration rates) to HSG D (poor infiltration rates). Whisper Way is currently a 12 to 14 foot wide stone dust access road 800 feet long providing access to three existing residences and a parking area at the cul-de-sac for the open space to the north. Runoff from the site drains to existing wetlands at the northeast and southeast portions of the site. The northeast wetland is connected to another wetland area on the east side of Route I-495 by an existing culvert. The project proposes work within regulated wetland resource areas. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 7 of 12 The proposed stormwater management design includes capturing pavement runoff through deep sump catch basins. The Stormwater Management Report includes geotechnical test pit data conducted at the proposed locations of the infiltration basins. Runoff is then directed to sediment forebays, and is then discharged to one of three infiltration basins. There will be a net increase of impervious area at the site of approximately 186,600 square feet (4.3± acres). The site is not within the 100-Year FEMA Flood. The project will disturb greater than one acre of land and is subject to the Massachusetts Stormwater Management Standards, Chapter 172 Stormwater Management and Erosion Control Bylaw of the Town of Hopkinton and Town of Hopkinton Stormwater Regulations. From Subdivision Regulations SW1.Provide updated calculations utilizing the required rainfall data specified in §8.4.2. GH: The rainfall has been adjusted to use the 100 year extreme precipitation.BETA2: Calculations revised – issue resolved. BETA3: Revise calculations for the following: a.Utilizing the same total drainage area for pre- and post-development b.Limit sheet flow length to 50 feet (Appendix E.1.d.) c.Use a minimum time of concentration of 6 minutes (0.1 hour) d.Update report narrative and supporting calculations to reflect change from infiltration basins to extended detention basins e.Modify design to reduce peak flow to Town Forest for 2-year storm SW2.Revise catch basin detail to include a 5 foot granite guttermouth per §8.4.5. GH: A granite gutter mouth detail has been added. BETA2: Plan revised – issue resolved. SW3.Provide catch basins at low point at STA. 1+00 and at Wood Street at STA 35+30± (§8.4.5.) . GH: Due to the lack of drainage in Wood Street, 1,500 gallon water quality inlets with gutter openings have been proposed.BETA2: See comment D5. SW4.Provide a detail for drainage drop manhole per§8.4.6.GH: A detail has been added to the plans. BETA2: A drop manhole detail has been added to the plans – issue resolved. SW5.Indicate size and material of all proposed drainage pipes on the plans. The discharge end of all pipes greater than 15 inches in diameter shall have a protective barrier (§8.4.8.). GH: All pipes have been labeled and a note has been added to provide end protection on pipes greater than 15" diameter.BETA2: Add note for protective barrier(s). SW6.Provide pipe sizing calculations including velocities for all proposed drainage pipes in accordance with (§8.4.8.). GH: Pipe sizing calculations have been added to the drainage report.BETA2: Flow exceeds 25 year storm capacity for some pipes, revise pipe sizes/design. SW7.Show top of basin contour lines on the plans to confirm a 25 foot setback from house, roadway or property lines (§8.4.6.). GH: A waiver will be requested from this due to the irregular layout of Wood Street at Detention Basin "C.”BETA2: BETA recommends providing a 10’ wide berm around Infiltration Basin C to prevent flooding o adjacent streets. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 8 of 12 SW8.Provide cross sections for proposed infiltration basin including method and materials of constructing embankments (§8.4.6.). GH: See Earth Dike detail on detail sheet 1.BETA2: Detail provided – issue resolved. SW9.Provide adequate screening of proposed infiltration basins (§8.4.10.). General SW10.Label all drainage structures and infiltration basins on the plans. Include bottom, top and contour elevations as well.GH: Plans have been revised. BETA2: Labels have been provided, however some of the labels conflict with other notes. Structure labels do not have leaders. BETA3: a.Revise drain easement at STA 6+00 L to locate pipe and structures within easement b.Eliminate reverse flow at DMH-3 c.Add contour labels on basins D and E SW11.Provide a detail for catch basin hoods. GH: A detail has been added. BETA2: detail not provided – issue remains outstanding. BETA3: Detail provided – issue resolved. SW12.BETA recommends proposing a cross slope of 3% and installing double grates for all catch basins for all roadway slopes greater than 5% to maximize capture of stormwater runoff. GH: The road cross section has been revised to show 3% cross slope and double catch basins have been added to the plans. BETA3: Plans revised – issue resolved. SW13.Revise the proposed drainage pipe design at STA. 29+00± to avoid reverse flow. GH: The manhole has been relocated to provide positive flow.BETA2: Correct reverse flow at DMH1, DMH3, and DMH-20. Massachusetts Stormwater Management Standards: The project is subject to the Stormwater Management Standards (Stormwater Regulations (SWR) 7.0). The following are the 10 standards and relative compliance provided by the submitted documentation. No untreated stormwater (Standard Number 1): No new stormwater conveyances (e.g., outfalls) may discharge untreated stormwater directly to or cause erosion in wetlands or waters of the Commonwealth.The proposed project includes deep sump catch basins to collect stormwater runoff and direct it to new three new sediment forebays and infiltration basins with overflow to existing wetlands. SW14.Clearly label basins, soil types and soil delineations on post-development watershed plans. SW15.Provide rip rap sizing calculations to confirm scour mitigation. Post-development peak discharge rates (Standard Number 2): Stormwater management systems must be designed so that post-development peak discharge rates do not exceed pre-development peak discharge rates.Calculations have been provided to confirm that post-development peak discharge rates do not exceed pre-development rates – standard has been met. Recharge to groundwater (Standard Number 3): Loss of annual recharge to groundwater should be minimized through the use of infiltration measures to maximum extent practicable. SW16.Soil test data provided is inconsistent, clarify the following: Ms. Wilson and Mr. MacAdam November 16, 2018 Page 9 of 12 a.Forms for test holes B, C, D, & E, indicate standing water in holes observed at 36 inches while estimated depth to high groundwater was much lower. GH: Forms have been revised.BETA2: Soil tests indicate ledge within excavation limits of multiple proposed infiltration basins. BETA recommends relocating proposed stormwater basins to avoid the need for blasting. b.Forms for test hole F & G show a checked the box for groundwater observed but no elevation was given.GH: Forms have been revised.BETA2: Forms revised – issue resolved. c.Clarify dates of test pits D, E, F & G, logs indicate a date of 8/16/18/. GH: Forms have been revised.BETA2: Forms revised – issue resolved. d.Provide Frimpter analysis for tests completed in July and August to determine seasonal high groundwater elevation (Massachusetts Stormwater Handbook (MSWH), Volume 2, Chapter 2, page 90).GH:The MSWH states that to groundwater should be based on soil mottles or through direct observation when borings are conducted in April or May, when groundwater levels are likely to be highest. If it is difficult to determine a seasonal high ground water depth from either test pits or soil borings, then the Frimpter method should be used. Depp hole tests were performed and mottles were observed, therefore the Frimpter method is not needed to determine ground water elevations.BETA 2: Tests hole data forms do not indicate the presence of mottles and test holes B-G were dug in July, provide Frimpter analysis to estimate seasonal high groundwater elevations at all July test holes. GH: Basins have been revised to act as extended detention basins rather than infiltration basins due to the depth to ledge and groundwater. Basin "C" will remain an infiltration basin. Each house will have 4 Cultec 330 recharger infiltration chambers added for roof runoff infiltration. Soil tests shall be performed on each lot and inspected to confirm depth to groundwater.BETA2: Provide anticipated locations of infiltration chambers on the plans. SW17.Revise infiltration basin grading and designs to maintain 2 feet of separation from seasonal high groundwater elevation (SHGWE). “Greater separation is necessary for bedrock” (MSWH V2 Ch2 p 89). a.Basin A – TP 13 indicates SHGWE at 394.5± while basin bottom is proposed at elevation 393. b.Basin C – After completing Frimpter Analysis on assumed SWGWE, tests may not be deep enough. c.Basin D - TP B indicates refusal at 384.3± & TP C indicates refusal at 383.5± while basin bottom is proposed at elevation 380. d.Basin E – TB D indicates refusal at 357.5±, TB E indicates refusal at 356.5± while basin bottom is proposed at elevation 358. GH: Basins A, B, D and E have been changed to dry extended detention basins rather than infiltration basins.BETA2: The Massachusetts Stormwater Handbook does not recommend extended dry basins to be installed by themselves (Volume 2, Chapter 2, page 51). Consider wet basins or other BMPs that may remove soluble pollutants. Consider additional shallow infiltration basins located within the “B” soils possibly cascading in series to follow topography and avoid deep excavations. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 10 of 12 SW18.Revise the design of Basin E. The minimum acceptable infiltration rate is 0.17 inches per hour (MSWH V 2, Ch2, p90). Label proposed contour elevations. BETA2: Design revised – issue dismissed. SW19.Provide locations, dimensions and elevations of emergency over flow for infiltration basins on plans and extend over flows to bottom of exterior fill.GH: Riprap has been added. Basin details have been added and specified in Earth Dike detail. BETA2: Provide spot elevations for emergency spillways on the plans. Consider relocating the emergency spillways for Basins A and B away further away from the locations of overflow to wetlands. Provide an emergency spillway for Basin C. Extend emergency spillways to the back of slopes. BETA3: Recommend relocating emergency overflow for Basin C to the east side of the basin to direct overflow to Route 495 swale and provide a typical detail for emergency overflow. SW20.Provide a minimum of 1 foot of freeboard for 100 year storm event for all stormwater basins. GH: Basins have been revised to provide one foot of free board. BETA2: Freeboard not provided for Basins A or B – issue remains outstanding. BETA3: Freeboard not provided for Basin B – issue remains outstanding. SW21.Provide methods to prevent clogging of small orifices in outlet control devices for basins.GH: Welded metal frames have been specified on the detail sheets.BETA2: Recommend providing stone backfill around the 6” PVC outlet pipe connected to the outlet control structure. SW22.BETA recommends providing roof runoff recharge system for each lot.GH:Each house will have 4 Cultec 330 recharger infiltration chambers added for roof runoff infiltration. Soil tests shall be performed on each lot and inspected to confirm depth to groundwater. Locations have not been shown on the plans vet since the actual location of the houses are not known and soil tests have not been performed on the lots to find the most effective location for the chambers.BETA2: BETA3: BETA recommends including a condition. 80% TSS Removal (Standard Number 4):For new development, stormwater management systems must be designed to remove 80% of the annual load of Total Suspended Solids.The proposed project includes stormwater collection and treatment via deep sump catch basins, sediment forebays and infiltration basins. TSS removal calculations have been provided to indicate 89% total TSS removal. SW23.Provide sediment forebay for Basin B. Revised plans indicate Basin B as a stilling basin while TSS calculations include a sand filter for Basin B. Provide calculations for Basin B and revise for consistency.GH: Basin B has a stormwater treatment unit for TSS removal.BETA3: Provide sizing calculations and locations of all proposed VortSentry treatment units. SW24.A sediment forebay is required to obtain 80% TSS removal credit. Do not list it separately for credit, revise TSS removal worksheets. Provide a detail and calculations for the proposed water quality swales indicated on the TSS calculation sheets.BETA2: Revise TSS calculations including: a.Remove credit for sediment forebay in Basin A & C – these are included in the credit for extended dry detention basin and infiltration basin b.Provide location and detail of water quality swale or remove from TSS calculations c.Provide sizing calculations and locations of all proposed Vortsentry units Higher Potential Pollutant Loads (Standard Number 5): Stormwater discharges from Land Uses with Higher Potential Pollutant Loads require the use of specific stormwater management BMPs.The proposed project does not generate stormwater from LUHHPPL – standard does not apply. Ms. Wilson and Mr. MacAdam November 16, 2018 Page 11 of 12 Critical Areas (Standard Number 6): Stormwater discharges to critical areas must utilize certain stormwater management BMPs approved for critical areas.The proposed project does not discharge stormwater to a critical area – standard does not apply. Redevelopment (Standard Number 7): Redevelopment of previously developed sites must meet the Stormwater Management Standards to the maximum extent practicable.The project does not meet the definition of a redevelopment project – standard does not apply. Construction Period Erosion and Sediment Controls (Standard Number 8):Erosion and sediment controls must be implemented to prevent impacts during construction or land disturbance activities.A draft SWPPP was submitted for review, which includes construction period pollution prevention measures SW25.Revise reference or provide a copy of the referenced “Bear Hill Village Erosion Control Plan of Land” for review.BETA2: Reference revised – issue resolved. SW26.Show locations of stabilized construction entrance/exit on the plans.GH: A detail has been added and the entrances shown on the erosion control sheet.BETA2: Plans revised – issue resolved. SW27.Provide silt sacks for all catch basins within the project limits and directly downstream. Include a silt sack detail on the Details sheet. GH: A silt sack detail has been added. There is no drainage in Wood Street to install silt sacks into. BETA2: Plans revised – issue resolved. Operations/maintenance plan (Standard Number 9): A long-Term Operation and Maintenance Plan shall be developed and implemented to ensure that stormwater management systems function as designed.An Operations and Maintenance Plan has been submitted for review. SW28.Include all BMP operations and maintenance requirements set in Appendix A of the Hopkinton Subdivision Rules and Regulations. Include manufacturer’s maintenance requirements for VortSentry units. SW29.Provide an estimated maintenance budget. GH: A maintenance budget will be provided. BETA2: Provide budget. SW30.Include a signature line for all responsible parties of the Operations and Maintenance Plan. GH: A signature line has been added to the O&M plan.BETA2: BETA recommends a condition that a copy of the signed final Operations and Maintenance Plan be submitted to the Town. SW31.Provide a BMP map, drawn to scale, showing the location of all stormwater BMP’s in each treatment train with the discharge point. Illicit Discharges (Standard Number 10): All illicit discharges to the stormwater management systems are prohibited.A signed Illicit Discharge statement has been provided – standard met. Additional comments SW32.For Standard 3, not all impervious surfaces are being directed to infiltration BMPs. Provide adjustment calculation in accordance with Stormwater Handbook Vol. 3, Chapter 1 Pages 27- 28 Ms. Wilson and Mr. MacAdam November 16, 2018 Page 12 of 12 WETLANDS The proposed site includes a wetland crossing at approximately sta. 30+00. The crossing is to be 36 feet in length and 12 feet in width and is noted as designed by others. W1.Provide clearer delineation of wetland on lots 24 and 25. GH: Wetlands have been clarified on the plans.BETA2: Plans revised – issue resolved. W2.Provide plans and details for wetland crossing, including any calculations for sizing the crossing and area to be disturbed. GH: The wetland crossing areas have been enlarged. BETA2: Along with G6, provide the following a.Profiles for three 36” wildlife crossing culverts between station 1+00 and 2+00 b.Profile and section through crossing at station 29+85. W3.Show limits of wetland disturbance on the plans.GH: Disturbed areas have been hatched. BETA2: Plans revised – issue resolved. If we can be of any further assistance regarding this matter, please contact us at our office. Very truly yours, BETA Group, Inc. Jillian Bokoff Philip F Paradis, Jr., PE Staff Engineer Associate O:\6100s\6118 - Hopkinton - Wisper Way\Engineering\Reports\Whisper Way Subdivision Review 11-16-2018.docx HOPKINTON PLANNING BOARD Monday, October 29, 2018 7:30 P.M. Town Hall, 18 Main St., Hopkinton, MA MINUTES MEMBERS PRESENT: Muriel Kramer, Chairwoman, Fran DeYoung, Vice Chairman, David Paul, Deborah Fein-Brug, Mary Larson-Marlowe, Gary Trendel, Carol DeVeuve, Amy Ritterbusch, Frank D’Urso Present: Elaine Lazarus, Director of Land Use & Town Operations, Cobi Wallace, Permitting Assistant Ms. Kramer opened the meeting. Mr. D’Urso stepped off the Board at this time. 1. 78 West Main St./Dunkin’ Donuts - Performance Bond Release Request Virginio Sardinha, S.F. Management, Dunkin’ Donuts franchise owner, and John Kucich, Bohler Engineering, engineer, appeared before the Board. Mr. Kucich noted the work at 78 West Main St. is completed, and the applicant is requesting the release of the performance guarantee held by the Town. He noted the request included an as-built plan, and he referred to a letter from the Building Inspector indicating the project was completed substantially in compliance with the approved plan. Mr. Trendel stated the applicant has done a nice job, and residents have commented favorably on the new development. Ms. Ritterbusch noted the building looks nice but she has heard about problems with parking. It was noted this is the plan approved by the Board, and Mr. Kucich stated the layout is dictated by site constraints. Ms. Fein-Brug asked if the proximity to the traffic light is a problem, and Mr. Kucich noted he does not think so. Mr. DeYoung asked about the possibility of exiting via Elm St., and Ms. Kucich stated it can be done but people may have to do a K turn. Mr. Paul asked if there is an option for a full loop around the building, and Mr. Kucich stated there is not enough room on the left because when High St. was discontinued, half of it went to the adjacent property owner. Mr. Larson-Marlowe stated people are not supposed to take a left turn into the site from West Main St. going east, but they are doing it any way. In response to a question from Ms. Kramer, it was noted there is signage directing customers to enter via Elm St. After further discussion, Mr. Trendel moved to release the performance bond to the applicant, Mr. DeYoung seconded the motion, and the Board voted unanimously in favor. Mr. D’Urso returned to the Board at this time. 2. Administrative Business Minutes: The Board reviewed the draft minutes of October 1, 2018. Mr. D’Urso moved to approve the minutes of October 1, 2018, as written, Mr. Trendel seconded the motion, and the Board voted unanimously in favor. 3. Other Business Chamberlain St./Whalen Rd. Subdivision. The Board discussed the process which is currently ongoing to amend the Conservation Restriction (CR) held by the Hopkinton Area Land Trust (HALT) for the area to be used to accommodate the roadway curve at the end of Chamberlain St., as discussed at a previous meeting. Ms. Kramer asked if the change will require a town meeting vote and Ms. Lazarus noted they are still waiting to find out about that. Planning Board Website. Ms. Ritterbusch referred to the Board’s previous discussion about changes/corrections to the Planning Board page on the Town’s website as one of the goals under the Master Plan Implementation Plan. She stated some of the listings of Planning Board subcommittees and liaisons to other boards and committees on the Accela database are incorrect. It was determined she will contact the person in charge to make the changes. Center School Reuse Advisory Team. Mr. D’Urso noted the Team is scheduled to report to the Board of Selectmen tomorrow night. Future Planning Board Agenda Items. Ms. Kramer stated she would like to schedule a discussion of the Master Plan Implementation Plan as soon as time allows. It was noted the Master Plan as a whole is only updated every 10 years, but they need to look at the subzone categories. Mr. Trendel suggested an update on the Zoning Advisory Committee (ZAC) and Ms. Kramer agreed. Ms. Kramer asked if anyone has any liaison reports, and Mr. DeYoung stated he will have an update on the Open Space Preservation Commission (OSPC), but not tonight. Mr. Trendel noted the Community Preservation Committee (CPC) had their first public hearing, and the majority of the funding requests will need a follow-up discussion but nothing specifically related to the Planning Board at this time. Ms. Fein-Brug referred to the most recent Design Review Board (DRB) meeting. She noted the DRB reviewed proposed signage, and it appears they need to look at some of the terminology to provide additional guidance. Ms. Ritterbusch asked for clarification, and Ms. Fein-Brug noted it is related to various downtown signs vs. building codes, to ensure a safe environment for everyone. Ms. Kramer stated perhaps this could be a potential ZAC item, and Ms. Ritterbusch noted they should ask Jeff Doherty about it at the next DRB meeting. 4. Continued Public Hearings - Bucklin St./Leonard St. – 1) Stormwater Management Permit Application & 2) Petition to Construct Bucklin St. – Wall Street Development Corp. Ms. Larson-Marlowe moved to open the public hearings, Mr. D’Urso seconded the motion, and the Board voted unanimously in favor. Lou Petrozzi, Wall Street Development Corp., applicant, and Robert Truax, GLM Engineering, engineer, appeared before the Board. Mr. Petrozzi noted there are 2 proposals before the Board, namely 1) Stormwater Management Permit application, and 2) Petition to construct the road. He noted he received comments from BETA Group, the Board’s consultant engineer, late on Thursday afternoon but has not been able to address the outstanding issues or revise the plans. The Board continued the discussion until after the scheduled public hearing on the Whisper Way subdivision. 5. Continued Public Hearing – Whisper Way (Wood St./Whisper Way) – Definitive OSLPD Subdivision – 20th Century Homes Mr. D’Urso moved to open the public hearing, Mr. Paul seconded the motion, and the Board voted unanimously in favor. Ron Nation 20th Century Homes, applicant, Dan Hazen, Guerriere & Halnon, engineer, and Mark Arnold, Goddard Consultants, wetlands engineer, appeared before the Board. Mr. Nation distributed color-coded copies of Whisper Way plans for discussion purposes. Mr. Hazen noted they are working with the Conservation Commission (ConCom) to minimize the impact on the wetlands, possibly by shifting the road 5 ft. to the north within the right of way. He noted it won’t be noticeable when driving, and will mimic the right of way of the rest of the development. Reference was made to the plan distributed tonight to clarify the change. Mr. Hazen stated they would like to get the blessing of the Planning Board on this particular aspect to avoid further back and forth between the two boards. Ms. Kramer stated she understands, but would like to point out that without feedback from BETA the Board is not in a position to approve the change tonight. Mr. D’Urso stated they will also need feedback from the DPW, and Mr. Hazen noted he does not think the DPW, or MassDOT, will have a problem with this plan. Mr. Arnold noted they looked into as many alternatives as possible, but decided on this option and are looking for positive feedback. Mr. DeYoung asked whether the other side will be impacted as a result of the change, and Mr. Arnold stated no. Ms. Larson-Marlowe asked for clarification, and, after further discussion, Mr. Hazen noted they are requesting a setback waiver in the far back of the property abutting the Town land. Ms. Fein-Brug asked what the ConCom is looking for, and Mr. Arnold noted they asked them to maximize the use of previously disturbed areas. Ms. Kramer stated the Board will not be able to address this tonight, but will consider the change if it makes better sense for the project. Reference was made to the sidewalk initially proposed along Wood St. as part of the development, as discussed at the previous meeting. Mr. Arnold referred to the color-coded plan distributed to the Board showing an alternative approach to achieve connectivity within the development by creating a nature path through the woods and along the wetlands. He noted the area along Wood St. is too tight and too close to the wetlands, and the ConCom really likes the alternative. Mr. D’Urso stated he still would to like to get feedback from the ConCom and the DPW regarding the possibility of a safe walkway along Wood St., but he might be open to a designated nature trail. In response to a question of Mr. DeYoung, Mr. Arnold noted it will be an approximately 1,000 ft. long nature trail and it will not be maintained during winter. Reference was made to the plan, and Mr. Arnold noted the ConCom is not in favor of the sidewalk sections coming off of Wood St. although homeowners would prefer walking there as opposed to along Wood St. Ms. Ritterbusch stated she hopes they keep those portions even if there are no homes right there, and it would be better for the kids waiting for the bus. Mr. Paul stated sidewalks along the new road are required. Ms. Larson- Marlowe noted she likes the idea of the nature trail. Ms. Fein-Brug stated maybe they could use pavement markings or bollards to create a safe walking area along Wood St. Mr. Paul stated he is an advocate for sidewalks in general, and it is something they will need work on as a Town, but he understands this section of Wood St. would be very challenging. Mr. Trendel stated the proposed path would have a substantial impact on Lot 13, and he would like to see something a little more maintainable and accessible than just a path through the woods although that may be difficult from an ADA perspective. Mr. Arnold noted there is a vernal pool across Lots 13/14 and the trail is set 75 ft. into the woods. He noted as far as upgrades to the path are concerned, stone dust may be a good solution but only for the flat areas, and from their perspective it would be better to have a natural trail on grade which can be semi maintained. Mr. Trendel stated that type of trail would not offer much in terms of year-round connectivity. Ms. DeVeuve agreed, and noted she personally would appreciate the applicant taking a long hard look to make it work along Wood St. Ms. Ritterbusch noted she would like any solution to include improvements to bicycle safety. Ms. Kramer stated she would like the applicant to work towards a solution, and although she likes the idea of the nature path she would hesitate using it for connectivity. Mr. Hazen asked about the Town’s rules for sidewalk snow removal, and Ms. Kramer stated the Town only plows some sidewalks but the DPW Director will be able to answer that question. Mr. Paul moved to continue the public hearing to November 19, 2018, at 7:45 P.M., Mr. Trendel seconded the motion, and the Board voted unanimously in favor. The Board and the applicant mutually agreed to extend the decision deadline to December 3, 2018. 6. Continued Public Hearings - Bucklin St./Leonard St. – 1) Stormwater Management Permit Application & 2) Petition to Construct Bucklin St. – Wall Street Development Corp. Mr. Petrozzi and Mr. Truax returned to the Board. Mr. Petrozzi described the locus, noting Bucklin St. intersects with Pleasant St. between house #’s 60 and 62. He noted the original submission was for 5 lots, but based on soil conditions and stormwater calculations they had to eliminate the 5th lot to accommodate a detention basin. Mr. Truax noted they propose to access the site from Pleasant St. on an elevated road with a 20 ft. wide paved width, using country drainage with swales and a grass strip to filter out sediments. He noted the homes will have Town water and sewer, and the homes will have their own recharge system as well. It was noted Georgia Wilson, Principal Planner, commented on this application in her memo to the Board, and Ms. Lazarus stated she has nothing to add at this time. Ms. Kramer noted the 4 newest Board members cannot vote on the stormwater management permit application. Mr. Petrozzi stated it is the intent that the road remain private and the future homeowners will be responsible for stormwater features. Ms. Kramer asked if the Town has a position on this issue, and Ms. Lazarus stated no, but the Board has the ability to require the road to remain private. Ms. DeVeuve asked if the Fire Dept. will be concerned about safety due to lack of maintenance, and Ms. Lazarus stated yes, possibly. Jillian Bokoff, BETA Group, noted BETA is looking for more information, for instance how the road will fit and the potential need to expand the watershed. She stated BETA recommends a meeting with the applicant’s engineer, and Mr. Petrozzi stated that would be fine. Ms. Larson- Marlowe asked for clarification as to wetlands impact, and it was noted the ConCom will be reviewing that aspect and the applicant is meeting with them tomorrow. Ms. Lazarus pointed out there will be an approval-not-required (ANR) plan at the end of this process. Mr. Paul asked how that will affect road/sidewalk design, and Ms. Lazarus noted the Board will be approving the road design, and that could include sidewalks. Ms. Kramer stated this part is about the stormwater management permit, and Ms. Lazarus stated they could break out the road design. Ms. DeVeuve stated from a clarity standpoint, they should look at and vote on everything once, and Ms. Lazarus stated there will be 2 separate votes. Ms. Kramer stated they will adjust the public hearing outline based on the conversation tonight. Peter Barbieri, Fletcher Tilton, attorney, appeared before the Board. Mr. Barbieri noted he represents the 2 immediate abutters and would like to briefly summarize his comments submitted to the Board with a copy provided to the applicant. Ms. Kramer stated the Board as this point is establishing the public hearing outline on this application. Mr. Barbieri stated he has additional information, and would like the Board to pass it on to Town Counsel. He noted the abutters have concerns about the impact on their properties from a drainage perspective. Mr. D’Urso suggested adding legal review to the outline. Tom Terry, 17 Maple St., asked for clarification as to the votes to be potentially taken tonight. Ms. Kramer noted they are just working on the outline with a more detailed discussion to follow, but there will be 2 separate votes. Mr. Terry asked if the Board has enough information, for instance from ConCom and BETA, and Ms. Kramer stated she does not think so. Mr. Petrozzi asked for clarification regarding the members eligible to vote on this plan, and Ms. Kramer noted only 5 members can vote on the application and for approval all 5 will need to vote in favor. Ms. Lazarus stated the applicant could withdraw and resubmit to have the benefit from a full board, and Mr. Petrozzi stated he would consider doing that. Mr. Petrozzi stated he would like the Board to waive the application fee in that case, and Ms. Kramer noted she is not prepared to answer that question tonight. It was clarified that all members are eligible to vote on the Petition to construct the road. Mr. Paul asked for clarification regarding the ANR aspect, and Ms. Lazarus stated the applicant first needs approval of the Petition to create access. In response to a follow-up question by Mr. Paul, Ms. Lazarus referred to Town Counsel correspondence for additional details. Mr. D’Urso noted Bucklin St. as a paper road is clearly used for a driveway to the 2 homes on Pleasant St., but it is not clear from the plan. He noted he hopes that any future development will include improvements for the existing homes on Pleasant St. as well. Mr. Petrozzi stated the driveway is shown on the plan between #60 and #62 Pleasant St. The Board discussed a date and time for a site walk, and it was decided to schedule it on Saturday, November 10, 2018 at 8:00 A.M. Mr. Petrozzi asked if a resubmittal of the stormwater management permit could use the same plans, and Ms. Kramer stated they can certainly talk about that as long as they are identical. Mr. Petrozzi stated it appears the Petition application is still on track, but he will withdraw the stormwater management permit application. Mr. D’Urso moved to continue the public hearing to December 3, 2018, at 7:45 P.M., Mr. DeYoung seconded the motion, and the Board voted unanimously in favor. Ms. DeVeuve asked about sending Mr. Barbieri’s comments to Town Counsel, and Ms. Kramer noted it is a little early to do that, and they already continued the hearing. 7. Continued Public Hearing – 55 Wilson St. – LNG Facility Secondary Access Road - Stormwater Management Permit Application – Denise Bartone, Eversource Energy Mr. Paul moved to open the public hearing, Mr. Trendel seconded the motion, and the Board voted unanimously in favor. Tracy Adamski and Jean Christy, Tighe & Bond, engineers, and James Blackburn, LNG project manager, appeared before the Board. Ms. Adamski provided a quick recap of the process so far. She noted the alternative access road is being proposed for emergency vehicles, mostly at the request of the Fire Dept. She noted based on BETA’s comments they made changes to the plan, provided additional details with respect to the proposed culvert crossing of the intermittent stream at Legacy Farms North (formerly Rafferty Rd.), and increased the size of the swale along the road. Ms. Kramer noted Board members walked the site in the pouring rain which helped them to better understand the site but there are still open questions. She noted there are some concerns about drainage features that are not included in the secondary access road application, and asking for improvements here is the issue. Ms. Kramer noted there is a lot of rubble and earth on the property to be crushed and used as fill, and she asked how much will be brought in. Mr. Trendel noted it will be helpful to see the amount of required regrading and fill. Ms. Kramer stated she did not mean to give the impression she is opposed to the project, and there is an effort to work within a previously disturbed site. Ms. Adamski noted there was some disturbance in connection with the existing access road, and the decision was made not to encroach further. Ms. Bokoff stated BETA suggested additional details and recommended 2 more conditions, including standards for surface material and gravel fines. Ms. Kramer asked if these are included in the draft conditions, and Ms. Lazarus stated yes. Ms. Ritterbusch asked for an update on the composition of the firefighting foam used by the LNG facility in the past, and Ms. Kramer noted she would also like to know more about current practices. Mr. Blackburn stated it is still used in some instances, but since a couple of years no longer for testing purposes as previously described. Mr. Blackburn stated they have a material data safety sheet (MSDS) but he is not sure how much information it actually provides as it would not apply to the concentration reached at the outfall. He noted it is used for testing to a small extent only in the area of the tanks so they are talking about a very limited footprint. Mr. D’Urso asked if the material is toxic, and Mr. Blackburn stated he believes it is not, at least not as applied, but as of 2 weeks ago they have not been able to get feedback from the manufacturer. Mr. D’Urso asked for the Fire Chief’s input, and Stephen Slaman, Fire Chief, noted he does not have any specific information. Katie Towner, 9 Kruger Rd., stated it was her understanding that there would be someone here tonight with knowledge of the chemical being used, but she is sure Hopkinton LNG personnel has the additional details. She noted it also sounds as if the company is continuing its use so claiming they don’t know its composition is very disingenuous, and the Board should not approve anything until that question has been answered. Mr. DeYoung referred to photos recently submitted by Ms. Towner, and asked when they were taken. Ms. Towner stated she feels the Board should ask the LNG facility to provide the pertinent records and additional information as to their practices with respect to the use of this chemical. Mr. D’Urso stated it would be helpful to understand the time frame they are talking about as he assumes the records are probably on file with the state. Ms. Towner stated she is willing to answer the question but would prefer that the LNG facility line up the dates. In response to a question of Mr. Trendel, Mr. Blackburn stated, based on conversations with the plant manager, the facility since 2014/2015 only uses the foam on a very limited basis. Mr. Blackburn stated they use Ansul Jet-X foam, and based on the MSDS he believes it is not hazardous as applied. Mr. Blackburn agreed to get more information and confirm when the process was changed. Ms. Kramer stated in the interest of doing due diligence she would like to better understand the process currently being followed by the facility, the potential impact of runoff coming off the site into the stream and ultimately the Hopkinton Reservoir, and what kind of environmental protection measures are in place. Mr. Paul stated he would like to see testing data going back 5 years. Ms. Fein-Brug stated she understands Mr. Blackburn has been with the company for 15 years or so, and Mr. Blackburn stated he is not sure he can go back that far. Ms. Adamski asked if they could focus on the stormwater permit application for the secondary road in order to be able to move forward. Ms. Kramer noted she is not questioning the processes used in the existing facility, but she is interested in trying to capture the firefighting foam issue as part of the conversation. Mr. D’Urso stated these are 2 projects proposed by the same company, and he has no problem asking them these questions now. Ms. Kramer stated it is fair to say the Board expects a little more detail tonight on the composition of the firefighting foam. Ms. Lazarus noted it is one of 3 applications, and even if the Board finishes up with this application tonight there will be 2 more opportunities to discuss this issue. She noted it is her understanding the testing is confined to the impoundment area, and they now have a procedure to remove foam instead of releasing it into the stream so unless something happens it does not go outside this area. Mr. Blackburn stated he would agree with that assessment based on current practices and can certainly confirm the current procedures but he hopes the Board recognizes there are 2 separate projects. Ms. DeVeuve stated the Board can disapprove an application based on concerns about water resources protection, but she is comfortable with proceeding with the access road project and discuss the other concerns later. Ms. Fein-Brug stated she would like to know at what point renovations to the facility would trigger an upgrade to the current stormwater infrastructure standards, because based on observations during the site walk there is evidence of aging. Mr. Paul noted the applicant is willing to work with the Board. Mr. DeYoung stated he agrees, and treating the access road as a separate project is ok. Ms. Kramer stated she is comfortable with moving forward with the access road, but would feel better if they have a collegial conversation. Mr. Blackburn agreed and noted they will be better prepared for that conversation at the next meeting. Ms. Towner stated her previous comments relate to the so-called dual use of a huge containment basin. She noted it appears the LNG facility feels they can fill this area with chemicals and have written procedures to clean it up so that all that’s left is stormwater, however it is not. She noted Board members had a chance to see the area, and she feels the Board should issue a cease and desist order and include a condition requiring the facility to find another way to handle this, perhaps by adding a cleanup device. She noted the tests in question are state mandated, and she is certain there are records and the Board should require the facility to produce them. Ms. Kramer thanked Ms. Towner for her comments, and noted the Board agreed to discuss this issue in more detail. Mr. D’Urso stated he needs more information and is not comfortable with voting on this application tonight. Ms. DeVeuve stated the applicant has indicated he is willing to provide the information. Ms. Ritterbusch asked if this can be handled with a condition of approval, adding language prohibiting the discharge of contaminated stormwater. Ms. Kramer noted she is not sure about the language to be used but it is a very good condition. Ms. DeVeuve asked it could be appropriate to address the concern with a reference to the stormwater permit for the liquefaction replacement project, and Ms. Lazarus stated yes. Ms. Kramer stated that is not something they typically do, and she asked for clarification. Ms. DeVeuve noted she is referring to Ms. Ritterbusch’s suggestion and she is comfortable addressing it in the next stormwater permit. In response to a followup comment from Mr. DeYoung, Ms. Adamski and Mr. Blackburn used the plan to illustrate that in their opinion it concerns 2 separate areas, actually separated by a berm, and noted they are willing to work with the Board. Ms. Fein-Brug stated the areas are not really tied in to each other, and the road itself is very well designed. Ms. Kramer read the draft conditions for the 55 Wilson St. stormwater management permit. Ms. Lazarus stated draft condition #9 can be taken out as according to Ms. Wilson the details are now on the plan. Mr. D’Urso stated he feels it is appropriate to add a new condition stipulating that the secondary road shall be used exclusively for emergency vehicles. Mr. Blackburn stated he would not necessarily want to restrict the use 100% as they could for instance use the road for construction traffic related to the liquefaction replacement which would minimize traffic impact on Wilson St. He noted the facility won’t use the secondary road for LNG tanker trucks but there could be a time they would want to use it for purposes other than an emergency. Mr. Trendel asked about Mr. D’Urso’s concerns, and Mr. D’Urso stated he is concerned about security, and restricting it to emergency vehicles only would also make him feel better about the stormwater management for this specific project. Ms. Fein-Brug stated she has similar concerns about security, and Mr. Blackburn noted it will be handled in the same way as the existing Wilson St. gate and vehicles are always met by a guard. Ms. Kramer noted she initially felt the additional condition is not needed but she has changed her mind, and perhaps the road initially can be used for liquefaction equipment construction vehicles, but after that it should just be for emergency vehicles only. Ms. Blackburn asked if there is a way to limit the use without 100% restricting it. Ms. Ritterbusch stated she does not think they need to add the condition, as it would be better to have traffic away from Wilson St. Ms. Kramer stated that is not what they are considering. Mr. Paul, Mr. Trendel, Ms. DeVeuve and Ms. Larson-Marlowe stated they agree with Ms. Ritterbusch and an additional condition is not needed. Ms. Towner stated she is concerned about security, not as far as Fire Dept. personnel and LNG truck drivers are concerned, but there is no vetting of the drivers of the construction vehicles. Ms. Kramer noted she does not disagree but the road was proposed as an emergency access. Chief Slaman stated he is ok with access either way. Mr. D’Urso stated this same Board and the same Fire Chief previously were against an open access emergency road, and in this case based on the use of the site there is a lot more at risk. Mr. Paul stated in the example he believes Mr. D’Urso is referring to, it was the current residents who did not want open access. Ms. Kramer stated this is a safety issue. Mr. Blackburn stated the workers that enter the facility are screened for drugs and have to pass background checks, and the contractors will have no access to the area with the tanks. Ms. DeVeuve moved to add the extra condition restricting the use to emergency vehicles only, Mr. D’Urso seconded motion, and the Board voted 7 in opposition and 2 in favor (Kramer, D’Urso). Ms. DeVeuve moved to approve the stormwater management permit for the secondary access road with the conditions as discussed tonight, Ms. Ritterbusch seconded the motion. Mr. DeYoung asked what other vehicles would potentially be using the road other than emergency vehicles and construction equipment in the beginning, and Mr. Blackburn stated he cannot think of anything off hand, although it may be better to use the road for nitrogen delivery trucks under icy conditions. The Board voted 8 in favor, one opposed (D’Urso). Mr. Paul moved to close the public hearing, Ms. DeVeuve seconded the motion, and the Board voted unanimously in favor. Mr. D’Urso left the meeting at this time. 8. Other Business ZAC. It was noted there are still a number of vacancies. Mr. DeYoung stated John Coutinho has applied for an open 1-year at-large position, and the Board of Appeals voted to appoint Margaret Shaw as their representative. Ms. Larson-Marlowe noted the 5 associate positions are also still vacant. Mr. Paul moved to appoint Mr. Coutinho to the ZAC as an at-large member for 1 year, and Ms. Shaw as a representative of the Board of Appeals for 1 year. Mr. Trendel seconded the motion, and the Board voted unanimously in favor. It was suggested to do some recruiting for filling the other open positions, and Mr. DeYoung encouraged the Planning Board members to attend the first meeting scheduled for November 5. Ms. Ritterbusch noted an associate member can join anytime during the year. After further discussion Ms. DeVeuve stated she is willing to join as at an at-large member for 2 years. Ms. Larson-Marlowe moved to appoint Ms. DeVeuve, Ms. Kramer seconded the motion, and the Board voted 8 in favor, 1 abstention (DeVeuve). Ms. Kramer asked about suggestions for work items. Ms. Kramer suggested sending them to the ZAC now, then explain them at the November 5 meeting. Ms. Ritterbusch stated she wants to make sure input from the meetings is made public, and it is the intent to have HCAM record the meetings. Massachusetts Turnpike/Rt. 495 Interchange. Mr. Paul noted he has heard about the proposed changes to the I-90/Rt. 495 interchange, and asked if the informational meetings are open to the public. Ms. Lazarus noted it is a large expensive project, and there are now 3 alternatives to be narrowed down to 1. She states she believes there is opportunity for the public to comment, and the information is on the state website. Mr. Paul stated he found a YouTube clip, and he asked whether a cloverleaf is considered. Ms. Lazarus stated there are a lot of wetlands and it is an ACEC so it cannot ever be a cloverleaf but there are some other clever ideas. Ms. Fein-Brug asked Mr. Paul to send the link to the YouTube video to the rest of the Board. Ms. Lazarus noted there is concern about the impacts on the Fruit St./Roosevelt Ln. neighborhood. Ms. Kramer asked if the area is close to the Town’s water supply, and Ms. Lazarus stated no. Mr. Trendel moved to adjourn the meeting, Mr. DeYoung seconded the motion, and the Board voted unanimously in favor. Adjourned: 10:15 P.M. Submitted by: Cobi Wallace, Permitting Assistant Approved: ___________________ Documents used at the Meeting:  Agenda for the October 29, 2018 Planning Board meeting  Memo from Georgia Wilson, Principal Planner, to Planning Board, dated October 25, 2018, re: Items on October 29, 2018 Planning Board Agenda  Draft Planning Board Minutes – October 1, 2018  Public Hearing Outline – Bucklin St. Roadway Petition; Plan entitled “Plan of Land “Parcel A – Bucklin & Leonard St.” Hopkinton, Massachusetts, dated March 29, 2018, rev. through October 7, 2018  Plan entitled “Whisper Way”/Erosion Control Plan Whisper Way in Hopkinton, MA, dated 5/24/18 rev. through 10/15/18, color-coded to show proposed sidewalk/nature path layout, prepared by Guerriere & Halnon, Inc.; Plan entitled “Whisper Way”/Roadway Sketch Plan, dated 10/25/18, prepared by Guerriere & Halnon, Inc.  Plan entitled “LNG Facility Secondary Access Road Project, Hopkinton, Massachusetts, Permit Drawings (55 Wilson St.), dated 8/14/2018 rev. through 10/25/2018prepared by Tighe & Bond; Email from Kathleen Towner to Don MacAdam, Georgia Wilson, Elaine Lazarus, Oct. 30, 2108, re: Eversource Liquifier Replacement Project Dual Use of Containment Basin; Stormwater Management Permit – Draft Conditions, 55 Wilson Street, Secondary Access Road, for 10/29/18 meeting