Southborough Fire Department SITE PLAN REVIEW

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5 Southborough Fire Department SITE PLAN REVIEW DATE OF REVIEW: 5/21/18 LOCATION/PROJECT NAME: 154 & 156 Northborough Rd REVIEWERS: Fire Chief Joseph C. Mauro PLAN INFORMATION: ACCESS: 1. All turns, access, and cul-de-sacs shall be designed to accommodate the vehicles to the American Association of State Highway and Transportation Officials (AASHTO) BUS-45 design standard. 2. All drainage, culverts, septic system components, underground utilities and chambers shall be designed to AASHTO H-20 AND HS-20 weight loading standards. 3. Access along all streets and driveways shall meet a minimum height clearance of 13 6 (Massachusetts Code of Regulation 527 CMR chapter 18) to allow for proper ingress/egress of fire apparatus and emergency vehicles. 4. All access roads and driveways shall be a minimum of 20 wide. (Massachusetts Code of Regulation 527 CMR chapter 18) ACCESS GATES: N/A ADDRESS: N/A BUILDING NUMBERING: Every building in the commonwealth, including, but not limited to, dwellings, apartment buildings, condominiums, and business establishments shall have affixed thereto a number representing the address of such building. Said number shall be of a nature and size and shall be situated on the building so that, to the extent practicable, it is visible from

6 the nearest street or road providing vehicular access to such building (Massachusetts General Laws c ). If, by placing the number on the house, the number is not easily read from the street, then the number must be placed on a stake or similar structure near the street at the edge of the driveway leading to the house (Code of the Town of Southborough 124-2). While the east building should be number 154 and the west 156, the new building plan calls for an office attachment connecting the two buildings. What will the office addresses be? DRIVEWAYS: Driveways to individual residences shall be a minimum of 12 in width to accommodate fire apparatus and overcome restrictions due to curves and reduction in width due to snow storage. FIRE DEPARTMENT SPRINKLER CONNECTIONS: All sprinkler connections shall be of the Stortz type (4 hose connection) for all new or modified systems. FIRE LANES [527 CMR ] : Both driveway entrances shall be designated No Parking, Fire Lane. FIRE HYDRANTS [527 CMR ANNEX E] : N/A FIRE SPRINKLERS: N/A PARKING: N/A PERMITS: Standard plan review prior to the issuance of a building permit, as well as smoke detector, carbon monoxide, oil burner and/or propane inspections will be required prior to the issuance of a final occupancy permit. RESPONSE TIMES FOR FIRE, MEDICAL, AND OTHER EMERGENCIES: The proposed structures are well within the Department s response goal to emergency incidents of four minutes or less 90% of the time. WATER SUPPLY: Adequate tests shall be performed by the proponent and submitted to the Town to ensure that the required water fire flow exists in accordance with ISO and NFPA requirements. Tests should be conducted in peak demand times if at all possible. OTHER COMMENTS: N/A

7 May 30, 2018 Ms. Karina Quinn Town Planner 17 Common Street Southborough, MA RE: Construction Garages, Northboro Road Peer Review for Major Site Plan and LID Application Fuss & O Neill Reference No A89 Dear Ms. Quinn: Fuss & O Neill has conducted a review of the documents submitted by Stamski and McNary, Inc. relating to the Major Site Plan Approval and Special Permit for a Low Impact Development (LID) for the development of a 20 unit multi use garage development located at Northboro Road. We offer the following comments based on compliance with the Town of Southborough Zoning Code (Zoning), the Town of Southborough Rules and Regulations for Lower Impact Development Special Permit (LID Regulations), the Massachusetts Department of Environmental Protection (MassDEP) Stormwater Handbook (Handbook), and standard engineering practice. Materials Reviewed/Prepared 1550 Main Street Suite 400 Springfield, MA t f California Connecticut 1. Report titled Major Site Plan Application, for Northboro Road, dated May 10, 2018, prepared by Stamski and McNary, Inc. 2. Site Plans titled Site Plan, Northboro Road, Southborough, Massachusetts, dated May 11, 2018, prepared by Stamski and McNary, Inc. 3. Lighting Plan, prepared by RAB Lighting, job name Southboro Industrial Building, dated 5/9/ Town of Southborough, Notice of Decision on Application for a Variance, dated March 14, Letter from the Town of Southborough Building Department denying request of Building Permit, regarding Northboro Road, Map 70 Lot 2, addressed to Mr. Daniel Aho, dated January 17, Letter from Town of Southborough Conservation Commission, regarding Stormwater Management Permit One-Year Extension, addressed to Mr. Joel Aho, dated April 23, Site Plan titled Planting Plan, dated April 23, 2018 and stamped , prepared by Sudbury Design Group. Maine Massachusetts New Hampshire Rhode Island \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx Vermont

8 Ms. Karina Quinn May 30, 2018 Page 2 8. Report titled Stormwater Management Report, Northboro Road, dated May 9, 2018, prepared by Stamski and McNary, Inc. 9. Site Plan titled Pre-Development Drainage Map, dated May 11, 2018, prepared by Stamski and McNary, Inc. 10. Site Plan titled Post-Development Drainage Map, dated May 11, 2018, prepared by Stamski and McNary, Inc. 11. Architectural Site Plans titled Northoboro Road, created December 28, 2017, printed January 01, 2018, prepared Boston Design Partners. 12. Review letter from the Town of Southborough Fire Chief, project name 154 & 156 Northborough Rd, dated 5/21/18. Major Site Plan 1. The Town of Southborough Board of Appeals, Notice of Decision on an Application for a Variance is required to be certified by the Town Clerk of Southborough. The Notice of Decision has not been certified. 2. The Town of Southborough Board of Appeals, Notice of Decision on an Application indicates the development consists of two buildings containing 10 units each. It appears as the development is for one building containing 10 units on one side, 10 units on the other and office space connecting the two. Fuss & O Neill understands the original project design was for two building with 10 units each. Has the revised project been provided to the Zoning Board of Appeals? 3. Per Section C(10) of the Zoning, private garage or parking for more than three cars or more than one truck or other commercial vehicle is permittable under a special permit with the Zoning Board of Appeals (ZBA). It s understood the Applicant is in the process of acquiring the special permit form the ZBA. Planning Board shall insure the permit is received. 4. Per Section A(4)(a) of the Zoning, access to the site location should not increase existing traffic by more than 10% and any time. The Applicant shall provide documentation on traffic patterns for the proposed development to ensure traffic will not increase more than 10%. 5. Per Section B(2)(b)[10] of the Zoning, signs, including proposed sizes, mounting heights, types and drafted design must be provided. There appears to be a proposed sign located at the west driveway entrance. A detail providing the required information does not appear to have been included in the Site Plans. A detail or details with required information for the sign shall be provided. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

9 Ms. Karina Quinn May 30, 2018 Page 3 6. Per Section B(2)(b)[13] of the Zoning, existing trees six inches or large must be shown on the site. The Site Plans to do not appear to show existing tree locations. At minimum an existing tree limit shall be provided on the Site Plans. 7. Per Section E(13) of the Zoning, 3.5 parking spaces for each 1,000 square feet of gross floor area is required for offices and nonresidential uses. The Applicant uses the 3.5 to 1,000 square feet however only uses 80% of the gross floor area. Please explain why the gross floor area was reduced. 8. Per Section B(9) of the Zoning, a permanent water supply or acceptable watering method, shall be provided for all planting areas. The Applicant as not indicated on the plans or documents provided is a water supply for planting areas is proposed. The Applicant shall provide documentation on the provisions for a water supply for the plantings. 9. Per Section E(2) of the Zoning, required trees shall be located within or adjacent to parking lots as tree islands, medians, and at the end of parking bays, traffic delineators, or between rows of parking spaces in a manner such that no parking space is more than 60 feet from a tree. Landscaping provided is located at the front of the proposed building and away from the parking area. It s understood existing trees will remain on southern property line near the parking area, however the proposed tree clearing limit is to the property line, trees to remain are not located within the limits of the property. It is recommended the Applicant improve the landscaping to provide additional planting along the south edge of the parking lot and the southern property line. 10. Per Section E(4) of the Zoning, any vehicular use area abutting a lot is that is residentially zoned shall be planted with a buffer strip at least 10 feet in width. Fuss & O Neill understands the southern property is owned by the rail road and does not contain residential structures. However, it is recommended the Applicant improve the landscaping to provide an additional planting for screening along the southern property line. 11. Per Section (F) of the Zoning, within an industrial park a landscape buffer of 50 feet in width shall be provided for a boundary abutting a residentially zoned lot. The southern property is zoned residential. Fuss & O Neill understands the southern property is owned by the rail road and does not contain residential structures. However, it is recommended the Applicant improve the landscaping to provide an additional planting for screening along the southern property line. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

10 Ms. Karina Quinn May 30, 2018 Page In review of the provided Planting Plan, it appears some of the proposed trees and shrubs are located within the right-of-way of Northboro Road. It s at the discretion of the Town to allow for the trees and shrubs be planted within the right-of-way. 13. In review of the provided Grading and Utilities Plan and the Planting Plan, it appears some of the trees are proposed to be planted within the swale. This may affect the performance of the swale/viability of the trees. It is recommended the trees be proposed in a location outside of the swale. Please review and revise as needed Lower Impact Development 14. Per Section J(3) of the Zoning, prior to commencement of any land disturbing activity, the applicant shall record the special permit with the Registry of Deeds or Registry District of the Land Court. Prior to construction, the applicant shall submit to the Planning Board written proof of such recording. 15. Per Section J(4) of the Zoning, at completion of the project, the owner shall submit as-built record drawings of all structural stormwater controls and treatment best management practices required for the site. At the completion of the project the Applicant shall submit an as-built drawing showing deviations from the approved plans, if any, and it shall be certified by a professional engineer registered in Massachusetts. 16. Per Section 3.2 h) of the LID Regulations, a Development Impact Statement must be provided. A Development Impact Statement does not appear to have been provided with the application materials provided to Fuss & O Neill. Please provide a Development Impact Statement. 17. Per Section 3.5 of the LID Regulations, a locus plan at a scale no smaller than 1 =1200 showing the area within a ½ mile radius of the site, Zoning Districts and property boundary lines, surface water bodies, wetlands, existing and future planned wells, private wells, major roadways and other landmarks. A locus plan with these requirements does not appear to have been provided. Please provide an appropriate locus map. 18. Per Section of the LID Regulations, references to location of the nearest public wells and know private wells with distance and direction to them. This information does not appear to have been provided. If applicable please provide the information of the nearest public and private wells. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

11 Ms. Karina Quinn May 30, 2018 Page Per Section 3.7 of the LID Regulations, engineering plans with details of the septic system shall be provided. Plans showing details of the proposed septic system do not appear to have been provided. Please provide plans showing the details of the proposed septic system. 20. Per Section 3.14 of the LID Regulations, an emergency response plan shall be provided. This information does not appear to have been provided. Please provide an emergency response plan. 21. Per Section p)(iv) of the LID Regulations, structural details for all components of the proposed drainage system and LID Management facilities.. The Site Plans show a proposed swale located between the Northboro Road and the proposed building. This swale appears to be the grass channel as described thought out the report materials provided, however it is not labeled as such and a detail has not been provided. In addition a rip rap swale detail has been provided. For clarification of the swale type, please label the swale accordingly and provide a detail/cross section. 22. Per Section (c)v of the LID Regulations, the owner must sign the Operation and Maintenance (O&M) Plan. The owner has not signed the provided Stormwater Operation and Maintenance Manual. A signature must be provided. 23. Per Section of the LID Regulations and 11.4 of the Stormwater and Erosion Control Regulations, inspection records must be kept for at least 5 years for Planning Board and 10 years for Conservations Commission. In the provided O&M Manual please include how long the recorded maintenance records shall be kept. Stormwater Management Report and General Stormwater Design 24. The Post-Development Drainage Map includes a watershed area labeled as P-2C however it is not describe within Post-Development section of the Stormwater Management Report. Please include a narrative on watershed area P-2C. 25. For clarification on watershed areas that discharge to each discharge point, please provide a Hydraflow diagram for both the Pre- and Post-development Hydraflow calculations. 26. It is difficult to determine how the hydrologic soils classification for each of the soils types was determined. Please provide a NRCS soils map showing the hydrologic soil classification. 27. In the Pre-Development Hydraflow calculations is recommend the shallow concentrated flow within Tc values calculated for E-1 and E-2 be broken down to reflect the changing in slope. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

12 Ms. Karina Quinn May 30, 2018 Page 6 Several areas within each of the Tc paths appear to have steeper or shallower slopes then shown in the calculations. This will affect the Tc values and peak times calculated. 28. For the invert out on DMH-1 there is a discrepancy between the Grading and Utilities Plan, the detail for DMH-1 and DMH-2 on Construction Details Sheet 6 of 8, and postdevelopment Hydraflow calculations. The invert out is shown as on the Grading and Utilities Plan, on the Construction Details, and within the Hydraflow calculations. The 3 should be consistent. Please review and revise accordingly. 29. The detail for DMH-1 and DMH-2 on Construction Details Sheet 6 of 8, indicates the minimum width of the weir must be 6 feet, however the diameter of the manhole is proposed at 60 inches (5 feet). The maximum width of the weir can only be 5 feet unless the diameter of the manhole is increased. Please clarify. 30. In the Post-Development Hydraflow calculations, a Mannings roughness coefficient of 0.24 was used for lawn within the sheet flow in the Tc calculations for Subcatchment P-1B and P- 2C. A coefficient of 0.24 is for dense grassed areas, it appears as this portion of the Tc is located within the swale. This area is would more than likely be a mowed area with short grass with a Mannings roughness coefficient of Please review and revise as required. 31. There appears to be a discrepancy between the Post-Development Hydraflow and the SMA-3 details provided on Sheet 6 of 8 in the Plan Set. The Hydraflow models the bottom of the chambers at an elevation of however the details indicates the bottom of the chambers The two should be consistent, in addition this affect the storage volume of the system. Please review and revise. 32. In review Post-Development Hydraflow calculations, the ratio of the different land covers areas for Subcatchment P-2B slightly incorrect. In review of the Site Plans the pavement area listed appears to be larger than shown, the open-space appears to be smaller than` shown and the wooded area appears to be larger than shown. Please review the land cover areas and revise as required. 33. For SMA-3, within both the Water Quality Volume and Groundwater Recharge Calculations, the provided volume below the outlet is stated 942 c.f. However the outlet for the system is at elevation , which when looking at the stage table in the Hydraflow calculations, the volume provided between 434 c.f. and 570 c.f. Please review the calculations to ensure the volume provided is correct and able to meet both the Water Quality Volume and the Groundwater Recharge Calculations. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

13 Ms. Karina Quinn May 30, 2018 Page Per Volume 3, Chapter 1 of the Handbook, when an infiltration structure has been deigned to treat the Required Water Quality Volume and/or attenuate peak discharges in addition to infiltrating the Required Recharge Volume, the storage volume of the structure must be used in the formula for determining drawdown time. It does not appear the structure volume was used in the drawdown calculations for SMA-1, SMA-2, and SMA-3. Please revise the calculations with the correct volumes. 35. In reviewing of recharge volume calculations it appears as the K value was not converted to feet, (divided by 12). The design still works when calculated correctly however it s recommend the Applicant please revise the recharge volume calculations for the record. 36. In review of the grading for the swale located in between the front of the building and road, it appears as the trench is pitched to the swale. It is recommended the Applicant revise the grading so the trench is located at the top shelf of the swale 37. The Vortsentry HS36 water quality units were sized for the 1/2' water quality flow. The Applicants states the project is in a critical area, thus a water quality flow of 1 should be used. Please review and revise as required. 38. The Applicant appears to take a 50% credit of TSS remove for the grass channel in both the treatment train for P-1B and P-2C. Per Volume 2, Chapter 2 of the Handbook, a grass channel provides 50% pretreatment when adequate pretreatment has been provided, such as a forebay. In addition the grass channel must be designed as outline in Volume 2, Chapter 2 of the Handbook. The pretreatment does not appear to have been provided for the grass channel and it does not appear to have been designed as outlined in the Handbook. Please review and revise accordingly. 39. Per Volume 2, Chapter 2 of the Handbook, trenches must be a minimum 20 feet from a building foundation including slabs. When scaled from the plans, the proposed trench appears to be about 14 feet from the building foundation. 40. In review of the pipe sizing information provided, it appears as the information entered for the headwall to the flared end does not match the design information shown on the site plans. Please review and revise accordingly. 41. Per Volume 2, Chapter 2 of the Handbook, for infiltration trenches it s recommend they be inspected every 6 months and after every major storm event. The provided O&M Maintenance Manual indicates the infiltration trenches are to be inspected annually, which is less than the recommended frequency. Please review. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

14 Ms. Karina Quinn May 30, 2018 Page Per Volume 2, Chapter 2 of the Handbook, for subsurface structures it s recommend the inlets be inspected at least twice a year. The provided O&M Manual indicates the subsurface infiltration areas are to be inspected annually after the first few months of more frequent inspections. The annual inspections are less than the recommended. Please review. 43. The provided O&M Manual outlines maintenance for CB-5; however CB-5 does not appear on the plans. Is CB-5 supposed to be DI-1? Please review. 44. Maintenance of the Grass Channel/Swale is not included in the provided O&M Manual. The swale is part of the stormwater system and maintenance must be provided to ensure the system continues to function properly. Please include. General Comments 45. There appears to be a discrepancy within the Site Plans. For DMH-2, the Grading and Utilities Plan lists the invert out at an elevation of and the weir elevation at , were as the detail for DMH-2 provided on Sheet 6 of 8 lists the invert out at an elevation of and the weir elevation at Although minor the two should be consistent and to ensure the stormwater calculations use the correct elevations. Please review and revise. 46. Sewage disposal system area calculations on the Layout Plan in the plans set, indicates a mixed use garage requires 15 GPD/Employee. It is difficult to determine how this value was developed. The property is proposed as a mix use, with office, storage, private garages and light manufacturing. The required gallons per day will vary between each of these uses. Please clarify. 47. Per Title V, pump chambers septic tanks, holding tanks, treatment units, and grease traps must have a 50 foot separation from open, surface or subsurface drains which discharge to Surface Water Supplies or tributaries thereto. The septic tank and pump chamber appears to less than 50 feet from SMA-1. Fuss & O Neill understands this septic system shall be reviewed by the Board of Health and the separation requirement is at the discretion of the Board of Health. 48. Inspection/Maintenance Note 10 on the Stormwater Pollution Prevention Plan, indicates inspection shall be completed every 7 day and within 24 hours of a rainfall event of 0.5 inches or more General Construction Permit has changed the required rainfall event to 0.25 inches. Please review and revise accordingly. \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

15 Ms. Karina Quinn May 30, 2018 Page 9 Fuss & O Neill has reviewed the sewer disposal system as it relates to the Town s Zoning regulations and relationship to the proposed stormwater system. Further review of the sewer disposal system shall be completed by the Southborough Department of Public Health. The above comments are based on plans, documentation, and calculations received at the time of review. Any revisions to the plans, documentations, and calculations will need further review. Please feel free to contact us with any questions. Sincerely, Reviewed by: Aimee Bell Project Engineer Daniel F. DeLany, P.E. Senior Project Manager /pl \\private\dfs\projectdata\p2006\0933\a Northborough Rd\Review\ Northborough RD_PB_ docx

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18 CERTIFICATE OF VOTE L Abri Fellowship Foundation I hereby certify that at a meeting of the Board of Directors of the L Abri Fellowship Foundation held by on March 16, 2018, at which a majority of the board members were present and voting, it was voted that Benjamin D. Keyes hereby is authorized to sign on behalf of the L'Abri Fellowship Foundation, for the instance of an application to the Southborough Planning Board to create a subdivision of the large lot at the address 43 Lover's Lane. I further certify that I have been elected Chairman of the Board of the L'Abri Fellowship Foundation on April 6, 2017, and that the above vote has not been amended or rescinded and remains in full force and effect as of this date. Robert Ludwick L'Abri Fellowship Foundation March 14, 2018

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21 ZONING DATA: RA LOT AREA = 43,560 S.F. LOT FRONTAGE = 150' FRONT YARD SETBACK = 35' SIDE YARD SETBACK = 25' REAR YARD SETBACK = 50' PLAN REFERENCE: PLAN BOOK 259 PLAN 105 PLAN BOOK 314 PLAN 64 PLAN BOOK 316 PLAN 98 PLAN BOOK 488 PLAN 123 PLAN BOOK 710 PLAN 9 LOCUS MAP (N0 SCALE) PLANNING BOARD ENDORSEMENT IS NOT A DETERMINATION AS TO CONFORMANCE WITH THE ZONING BYLAWS. OWNER OF RECORD: MARCIN SKRODZKI OLGA SKRODZKA DEED BOOK PAGE 90 ASSESSORS MAP 50 LOT 6 LOCATION: 17 WARD ROAD SOUTHBOROUGH MA 17 WARD ROAD NOTE: 1. THE PURPOSE OF THIS PLAN IS CREATE LOTS 1 & 2 INTO SEPARATE BUILDING LOTS. 2. APPROVAL IS NOT REQUIRED UNDER THE SUBDIVISION CONTROL LAW BECAUSE LOTS 1 & 2 HAVE THE REQUIRED AREA AND ROAD FRONTAGE TO BE CONSIDERED A LEGAL BUILDING LOT. Approval under the subdivision control law not required. Planning Board of Southborough. DATE: JARVIS LAND SURVEY, INC 29 Grafton Circle Shrewsbury, MA Tel. (508) ~ Fax. (508) THIS PLAN HAS BEEN PREPARED IN CONFORMITY WITH THE RULES AND REGULATIONS OF THE REGISTERS OF DEEDS IN THE COMMONWEALTH OF MASSACHUSETTS AND IN COMPLIANCE WITH THE RULES AND REGULATIONS FOR THE PRACTICE OF LAND SURVEYING IN THE COMMONWEALTH OF MASSACHUSETTS. THIS CERTIFICATION IS INTENDED TO MEET THE REQUIREMENTS OF THE REGISTRY OF DEEDS AND IS NOT A CERTIFICATION OF THE TITLE OR OWNERSHIP OF THE LAND SHOWN HEREON Kevin J. Jarvis P.L.S. #40044 PLAN OF PROPERTY SURVEYED FOR MARCIN SKRODZKI OLGA SKRODZKA 17 WARD ROAD SOUTHBOROUGH, MASSACHUSETTS DATE: CHECK: K.J.J. CALC: K.J.J. FIELD: DM/ML N.B. # SCALE: 1 INCH = 30 FEET PLAN:

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