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Home My WebLink About2019-09-17 Civil Peer Review SPR 1 146 Dascomb Road Andover,MA 01810 978.794.1792 The EngineeringCorp.com create I Design I innovate The Engineering Corp Ms. Monica Gregoire June 27, 2019 Staff Planner Planning Department Town of North Andover 120 Main Street North Andover, MA 01845 Ref. T0758.08 Re: Peer Review# 1 Site Plan Review 505 Sutton Street, North Andover, MA Dear Ms. Gregoire: On behalf•of the Town of North Andover, TEC, Inc. reviewed documents as part of the civil engineering peer review for the proposed project to be located at 505 Sutton Street. Sutton Street Redevelopment, LLC (Applicant) submitted the following documents, which TEC reviewed for conformance with the Town of the North Andover Zoning Bylaws and generally accepted industry standards: • 505 Sutton Street Special Permit and Waiver Application Package, prepared by Sutton Street Redevelopment, LLC, dated May 30, 2019, 40 total pages; Site Plans entitled: "Multifamily Site Development Plans", prepared by The Morin-Cameron Group, Inc., dated May 16, 2019, 21 total sheets; Under review of the document and plans, TEC has compiled the following comments for the Board's consideration: 1. It should be noted that the Applicant is requesting the following Special Permits as noted in their application narrative: a. Section 195-4.8.0—to allow multifamily housing in Business 2 district; b. Section 195-2.2(21}—to allow a shared common driveway; c. Section 195-8.8 — to allow up to 14 park spaces facing each other between landscape islands where a maximum of 10 is allowed; d. Section 195-8.8 --to reduce the total number of parking spaces required to 215 from 224 which provides a ratio of 1.56 spaces per dwelling unit; e. Section 195-8.10—special permit for construction of new buildings exceeding 2,000 square feet of gross floor area and the addition of more than five (5) parking spaces. 2. The Applicant will also be requesting waivers from the following sections of the Town of North Andover Zoning Bylaws: a. Section 195-8.14.E—several sections within the site plan review submission requirements. For full detail, refer to the special permit package; T:\T0758\TO758,08\Docs\Letters\TO758_PeerRelvew_NorthAni ver_5055utton5treet.docx 505 Sutton Street, North Andover, MA TEC Peer Review#1 The EngfnewingCorp June 27, 2019 Page 2 of 3 b. Section 195-7.4F —to allow height increase in the B-2 district to 55' from 35' to accommodate a housing density of 136 rental units; c. Section 195-8.5A & 8.5.C(3)—to allow a 36' wide curb cut where 25' is the maximum allowed. 3. The Applicant should include a consistent limit of work across all of the site plan sheets. The limit of work should include all proposed grading work on the western side of the property. 4. The Applicant should label the approximate Watershed Protection District on site plans and should determine if a permit is required for the proposed work within this district. 5. The project is proposing garage parking totaling 120 spaces. It appears that the site layout provides garage access to Buildings 1 and 2, however Building 3 is labeled for garage spaces on sheet CA. The Applicant should provide parking layouts within the proposed buildings with dimensions for parking spaces and drive aisles. 6. The Applicant should provide the required handicapped parking calculations based on Chapter 180-2 of the Town of North Andover Bylaws and the Architectural Access Board regulations, as well as the provided spaces within the parking schedule or a parking table. 7. The Applicant should show the resource area delineation flags that have been previously approximated upon an approved order of resource area determination issued by the Town of North Andover on Oct. 27, 2016. 8. The project will likely require a Notice of Intent filing with the Conservation Commission for the proposed work located within the 100-foot buffer zone to a resource area. 9. TEC recommends that the Board require a traffic study be prepared to review accesslegress operations and safety for the proposed shared driveway connection to Sutton Street. 10. The Applicant should provide a snow storage area on site that limits draining and runoff to abutting properties and directs melting snow into the proposed stormwater system for treatment. 11. The Applicant should coordinate with the Town of North Andover Fire Department to confirm drive aisles, buildings, utilities and amenities are all fire accessible. 12. TEC encourages the Applicant to coordinate directly with the abutting residential owners to design a "residential buffer zone" that is amendable to all parties. 13. The Applicant should review the proposed recycling and trash to evaluate if a larger container is needed for the number of proposed dwellings. Will this be enough waste storage? Can another enclosure be added around Building 3 to alleviate over packing of the current enclosure? Additionally, is there enough space for a waste truck to enter the enclosure area without blocking the proposed garage drive aisles between Buildings 1 and 2? 14. The applicant should show trees/shrubs to be removed within L1.1 Planting Plan and the legend if applicable. T:\T0758\T0758.08\Docs\Letters\T0758_PeerReivew_NorthAndover_505SuttonStreet.docx Engineering Tomorrow"s Solutions Today, 1 505 Sutton Street, North Andover, MATEE: Peer Review##1 ?'fro r:npinaal rrg Cori) June 27, 2019 Page 3 of 3 15. The Applicant should provide additional detail on the proposed wall on the eastern property line (top of wall, bottom of wall spot grades). It is unclear if the Applicant is proposing work on the adjacent property to construct this wall. 16. The Applicant should call out the existing wooded areas to remain surrounding the property either by leader or within the legend on plan set L1.1 Planting Plan. 17. The Applicant should coordinate with the Town of North Andover Department of Public Works to determine if adequate water capacity exists for the domestic and fire prevention lines. As currently drawn, the 4-inch domestic water service is tapped off of the 6-inch fire suppression services (building 2 & 3). 18. TEC recommends that the Applicant install a sidewalk connection to Sutton Street on at least one side of the proposed shared driveway. 19. Based on the test pit information, it appears that the garage floors may be constructed below the estimated seasonal high groundwater. The Applicant should clarify if a sump pump or permanent dewatering system will be proposed, and where the effluent will be directed. 20. TEC recommends a minimum horizontal separation of 10-feet between the proposed sewer infrastructure and the stormwater infiltration systems (front of building 1). 21. TEC recommends that the Applicant provide a sewer pipe sizing calculation to confirm adequate capacity exists for all three buildings. Please do not hesitate to contact me directly if you have any questions concerning our comments at 978-794-1792.Thank you for your consideration. Sincerely, TEC, Inc. "The Engineering Corporation" Peter E. Ellison, P.E. Director of Strategic Land Planning T:\T0758\TO758.08\Docs�Letters\TO758_PeerRelvew_NorthAndover_505SuttonStreet.docx Engineering Tomorrow's Solutions Today.