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HomeMy WebLinkAbout2012-03-20 Planning Board Supplemental Materials (130) Eggleston Environmental 32 Old Framingham Rd Unit 29 Sudbury MA 01776 tel 508.259.1137 fax 866.820.7840 March 15, 2012 North Andover Planning Board 1600 Osgood Street North Andover, MA 01845 Attn: Judy Tymon, Town Planner RE: Watershed Special Permit Review 350 Great Pond Road Dear Ms. Tymon and Board Members: Per your request, I have reviewed the February 9, 2012 Watershed Special Permit Application packet for the above-referenced project, prepared by Christiansen & Sergi, Inc. on behalf of Ismail Erhan. The proposed project entails the expansion of an existing single family home, in conjunction with razing and replacement of an existing garage. The entire project is located within the Non-Disturbance Zone of the Watershed Protection District. My comments on the application are outlined below: 1. The proposed plan reflects several improvements over the previous application I reviewed last July, including the fact that the entire building roof area will be recharged, and the new pavement and walkway areas are proposed to be porous pavers. Provision should be made to ensure that the pavement areas remain porous over the long term, e.g. through regular maintenance and a deed restriction on any additional impervious surface within the Non-Disturbance Zone. 2. The plan calls for razing of the existing detached garage and incorporates that area in the GFA allowance for the proposed house addition. A deed restriction prohibiting the construction of an accessory garage structure within the Non- Disturbance Zone should therefore be made a condition of approval. 3. The total area of land disturbance should be clearly shown on the plans and additional detail provided on the work to be done in the area designated for vista pruning. 4. A landscaping plan, incorporating native vegetation as noted on the site plan, should also be provided. 5. As with similar projects permitted within the Watershed Protection District, both the limits of approved clearing and the restriction on lawn care products should be permanently recorded on the deed to the property. 350 Great Pond Rd, Technical Review 2 March 15, 2012 6. I recommend that the use of copper, brass or zinc coated building materials (e.g. roofing, gutters and downspouts, and ornamentation) be prohibited within the Non-Discharge Zone, except where they will not be exposed to rainfall or runoff. I appreciate the opportunity to assist the North Andover Planning Board 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.