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HomeMy WebLinkAbout2013-05-07 Planning Board Supplemental Materials (25) Eggleston Environmental 32 Old Framingham Rd Unit 29 Sudbury MA 01776 tel 508.259.1137 fax 866.820.7840 May 7, 2013 North Andover Planning Board 1600 Osgood Street North Andover, MA 01845 Attn: Judy Tymon, Town Planner RE: Stormwater Review 100 Dale Street WSP Dear Ms. Tymon and Board Members: In follow-up to my April 26, 2013 letter on the above-referenced project, I have received and reviewed the May 6, 2013 response and revised plans submitted (via email) by Christiansen & Sergi, Inc. My comments are outlined below: 1. The revised plan keeps all development activity out of the Non-Disturbance Zone shown on the plan. However, it is not clear what the basis is for the wetland setbacks shown on the plans and whether the wetland delineations have been confirmed by the Conservation Commission. 2. Based on MassGIS and MassDEP’s Water Supply Protection Area mapping (see copy attached) there are tributaries to the southwest and east of the project site, and a portion of the site does appear to be within Zone A for the town’s water supply. 3. Based on the soils mapping submitted, the soils on the site are expected to be Charlton and Sutton fine sandy loams of Hydrologic Soil Group (HSG) B. Given that these soils are generally well suited for infiltration and that the proposed infiltration structures will be at or only slightly below existing grade, I agree that confirmatory soil testing does not need to be done at this time and could be made a condition of approval. 4. Consideration should be given to routing the utilities up the driveways to each house to reduce the area of clearing needed. 5. As indicated in my previous comments, the Board may also want to request a planting or landscape plan for the lots, and both the limits of approved clearing and the restriction on lawn care products should be permanently recorded on the deed to the property. 100 Dale St, Stormwater Review 2 May 6, 2013 6. Maintenance requirements for the stormwater management systems have been added to the plan; however there should be a more suitable way to ensure that the information is conveyed to successive property owners. Once again, I appreciate the opportunity to assist the North Andover Planning Board and Conservation Commission with the review of this project, and hope that this information is suitable for your needs. Please feel free to contact me if you or the applicants have any questions regarding the issues addressed herein. Sincerely, EGGLESTON ENVIRONMENTAL Lisa D. Eggleston, P.E. C: Jennifer Hughes, Conservation Coordinator