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HomeMy WebLinkAboutCorrespondence - 880 GREAT POND ROAD 3/28/2008 P(3 TOWN OF NORTH ANDOVER PLANNING BOARD � ✓ ENGINEERING REVIEW OF WATERSHED SPECIAL PERMIT (yx FOR CONFORMANCE WITH THE TOWN OF NORTH ANDOVER ZONING BYLAW 6z Site Plan Title: Plan Showing Proposed Dwelling VHB No.: 09280.41 Site Plan Location: 880 Great Pond Road,North Andover,MA Applicant: Robert Ercolini, 195 Bridle Path,North Andover,MA Applicant's Engineer: Andover Consultants,Inc., 1 East River Place,Methuen,MA Plan Date: December 3,2007 Review Date: 1-28-2008 2nd Review Date: 3-27-2008 The plan was reviewed for conformance to the 1972 Town of North Andover Zoning Bylaw(last amended July 10,2006). The Applicant has submitted the following information for VHB's 2°d review: • Response to comments letter dated March 24,2008, • Application for Watershed Special Permit, • Plan Showing Proposed Dwelling-880 Great Pond Road- 1 Sheet,dated December 3,2007. The following comments note non-conformance with specific sections of the Zoning Bylaw or questions/comments on the proposed design and VHB's recommendations/suggestions. VHB's original comments are shown below in regular font with follow-up comments in bold. Town of North Andover Zoning Bylaw 1. (4.136.3.c.ii.3) Has a variance been granted for the construction of this dwelling,as required by this section? Addressed. The Applicant states in his response that a variance has been granted. 2. (4.136.3.c.iii.4 and 5) A note should be added to the plans prohibiting the use of lawn care or garden products during construction that may contribute to the degradation of the public water supply or that are not organic or slow-release nitrogen,as specified in this section. Addressed. 3. (4.136.4.c.ii.4) The Applicant should revise the 100'Buffer Zone dimension to read 100'Non- Disturbance Zone. Addressed. 4. (4.136.4.c.iii) A written certification by a Registered Professional Engineer,stating that there will not be any significant degradation of the quality or quantity of water in or entering Lake Cochichewick has not been provided,as required by this section. Addressed. A certification has been provided. 5. (4.136.4.c.vii) The Applicant should provide projections of down gradient concentrations of nitrogen, phosphorous and other relevant chemicals,as required by this section,or request a waiver. Addressed. Projections have been provided. RECEIVED A 28 2008 wQKTH Al IDOvt;h PLANNING DEPARTMENT C:\Documents and Settings\mippolit\Local Settings\Temporary Internet Files\OLIC2\0928041-$80 Great Pond WSP-2.doc 6. (4.136.4.g) The Applicant has provided an infiltration trench to recharge roof runoff. Have other groundwater recharge methods been considered for the driveway and/or deck areas? Addressed. General Site Plan/Drainage Comments 7. The Applicant should note that the Locus Plan shows Haverhill as the bordering town to North Andover. This should be revised to Boxford. Addressed. 8. Have test pits been taken at the location of the proposed infiltration trench? The Applicant should verify that there is a 2-foot separation between annual high groundwater and the bottom of the trench. At a minimum,this 2-foot separation should be specified on the Infiltration Trench detail. Addressed. 9. A detail should be added for the proposed retaining wall. Addressed. 10. A detail/typical section should be added for the proposed paver driveway. Addressed. The Applicant has revised the plans since the first submission. VHB offers the following additional comments regarding the revised plans: 11. An"enhanced plantings" area is now proposed between the Farmer's wall and the wetland area around the property. The Applicant should clarify what the plantings will consist of. 12. An edge treatment along the edge of the driveway should be proposed,adjacent to the top of the proposed stone wall. This edge will help direct runoff to the catch basin and avoid conveying runoff to the adjacent property. 13. As currently designed,the roof drain overflow on the east side of the house is higher than the catch basin rim. Therefore,during larger storm events,ponding may occur in the driveway. Has the Applicant considered an overflow pipe from the proposed catch basin or infiltration trench? It is recommended that the Applicant provide WRITTEN RESPONSES to the issues and comments contained herein. Reviewed by: Date: Darryl Gallant,P.E. Civil Engineer—Highway and Municipal Checked by: Date: Timothy B.McIntosh,P.E. Project Manager—Highway and Municipal C:\Documents and Settings\mippolit\Local Settings\Temporary Internet Files\OLK2\0928041-880 Great Pond WSP-2.doc