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HomeMy WebLinkAboutCORRESPONDENCE/PEER REVIEW Town of North Andover o Ho pTH ti OFFICE OF 32 h t. o L COMMUNITY DEVELOPMENT AND SERVICES p 146 Main Street �AAifo•IP`y.�5 KENNETH R.MAHONY North Andover, Massachusetts 01845 9SSACHUS�t Director (508) 688-9533 Fax Transmittal Sheet To: Fax # From: Kathleen Bradley Colwell, Town Planner Date: X eCpyy)bey- :C'- � �q 95 Re: Cc OU C-n�ky-\-/ V2r1 C OON - . {'CSC nC-S - C'EZ`E E 1 1_ 1 Cpl Cx1 > V�(1 Ci a tr1C� Total number of pages (including cover sheet) , BOARD OF APPEALS 688-9541 BUILDING 688-9545 CONSERVATION 688-9530 HEALTH 688-9540 PLANNING 688-9535 Julie Parrino D.Robert Nicetta Michael Howard Sandra Starr Kathleen Bradley Colwell R CLlY�:.'., DA L0 G NORTH A,iAY R DECEMBER 16, 1985 DEC Conditional Approval Coventry Estates ^ Definitive Subdivision DEFINITIONS SECTION Developer: shall mean Coventry Development Corporation, 1.00 Lindbergh Avenue, Methuen, Ma and its successors . The Board: shall mean ' the Planning Board of the Town of North Andover, Ma. The Rules: shall mean the Rules and Regulations Governing the Subdivision of Land - North Andover , MA. issued by said Board and as amended through this date. The Plan: shall mean sheets one through four. , grading plan sheets 1-4, plan & profile sheets 1-9 of the Definitive Plan of "Coventry Estates" prepared by Beta International, Inc . , dated July 1985 revised November 8, 1 . The pending Notice of Intent presently before the North Andover Con6.ervation Commission shall be the determining factor regarding restrictions on wetland work within the subdivision. The applicant shall be governed by the Commission under M.G.L. Chapter 131 - Wetlands Protection' Act, and the local. Conservation Commission ' s local regulations . Any changes required may be cause for reconsideration of the subdivision under M.G.L. Chapter' 41 . 2 . If the Conservation Commission institutes, or recommends any changes to the approved definitive plan, the applicant shall submit all information to the Board for review of any major revisions which may be considered for modification under Chap.41 . -- - 3. Iya accordance with the Conservation Commissi.on ' s comments and me4orandum dated December 10, 1985 : that, the portion of the subdivision fronting on, Dale Street, specifically Lots 1 through 5 that is within 100 feet of the wetland tributary, may have restrictions imposed rendering these lots.. unbuiTdable. These lots will not be released from the restrictive covenant until the time in which all permits have been approved. Copies of all approvals and plans shall be submitted to Board for approval . - Due to steep slopes on lots 17 through 30, both temporary and permanent erosion control and stabilization measures shall be implemented during and after construction. Mitigating plans stipulating erosion control shall be submitted for approval . 4. The Planning Board will. require a bond in the amount of $126 , 000 or $3,000 per lot to cover erosion control measures during construction. If the erosion measures are deemed inadequate to provide for the necessary control measures , the Board wil_1 cvarni ca +-ha ccar+iiri i-v to cfiahl i 7.P tl1P_ nrnhl em area . 1 � �AF,I L I,f's;i; , Coventry Estates NORTH A16JO ER, Definitive Subdivision DEC 11 ' yg �U5 - J U 5. Conditional approval of this subdivision does not imply pre.-approval of any other outstanding permits , specifically those associated with Section 4 . 133 of the North Andover Zoning Bylaw - Watershed District Special Permits or Variances . 6 . Hydrants shall be within 500 foot intervals with a hydrant to be located at the intersection of Dale Street and Coventry Lane. 7 . A 50 foot buffer strip shall remain around the periphery of the subdivision in its natural state along Lots 3 through 16, with the exception of drainage and utility requirements . This buffer strip shall be placed on the deeds of each lot prior to conveyance. *to be noted on the covenant and recorded plan. Copies of proposed deed restrictions shall be submitted for approval_ by the Board . 8 . In order to minimize or eliminate wetland disturbance due to associated drainage structures, the developer may seek the option of constructing a dike on Town Farm Land behind Lot 16 , subject to review and approval from the Conservation Commission and Selectmen. No construction shall occur until approval is received and the Board is notified. 9 . Per Section 4 . 133 Watershed District, no burying of tree stumps and other debris will be allowed in that portion o-f the subdivision *ithin the Watershed District. For that portion of the subdivision outside of said District shall have a certified plan by a land survyor submitted to the Board and Highway Surveyor for review and approval prior_ to any on-site utility or, road construction. 10. No open burning is permitted, except that allowed by the North Andover Fire Department. 11 . Lot numbers shall be posted during construction, and house numbers shall be posted prior to occupancy. 12 . The pump station on Dale St . shall be relocated to a site with the . --- lowest possible natural elevation which is near the northeast corner of Lot 15 with the approval of the Board of Public Works . 13 . Cleanouts shall be provided on the Dales St . force main at sta . 7+93 Orchard Path and on Dale St . at sta. 203+50 , 214+50, and 222+0 . 14. Thd sewer line between sta . 10+0 Orchard Path and 0+08 Coventry Lane shall be shown on the profile sheet . P RECEIV:F0 DAHI1:L L_CHG NORTIi A DOYER Coventry Estates Defintive Plan OEC 19 1 45 P 85 15 . The plans shall be modified to show the existing 12 inch water main on Dale Street and South Bradford Street : - South Bradford / Dale Streets twelve inch class 52 ductile iron pipe installed -15 feet from the northerly property line with 5 feet of cover below the finish grade, to be extended down S .Bradford St . to Dales St . with hydrants every 500 feet and division gate valves every 1000 feet. The Dale Street main shall be extended on Dale to the intersection of S .Bradford with hydrants every 500 feet . The water main on Dale shall end at sta . 209+00 . (Subject to modification upon submittal of subdivision abutting said property and review by Public Works) All hydrant branches shall be provided with six inch Mueller or equal valves (open left) and comply with AWWA specifications L500 52T and will be supplied with 100 lb sliding type gate boxes marked 'Water ' . All water mains shall pass leakage and pressure tests performed in accordance with section 13 of the AWWA standard C600 and shall be chlorinated in accordance with AEEA C601 ' Standard Procedure for disinfecting water mains ' . - All sewer mains shall be 8 inch vitrified clay pipe installed in the centerline of the Street. The force main shall be installed 5 feet right of centerline on Orchard Path and Coventry Lane 5 feet of cover below the finish ' grade and shall be ductile iron pipe. - The gravity sewer on Dale St. shall be deepened from Appleton St. to meet the invert of the existing manhole and shall proceed on Dale St. at minimum grade in order to provide gravity sewer to maximum number of existing homes . The proposed force main shall be ductile iron pipe. - 5 inch vitrified clay sewer services extended to the property line shall be provided where ever an off site sewer passes an existing dwelling. - Precast manholes shall conform to ASTM designation C478 and ahll meet the following additional requirements , the wall thickness ahsll be not less than 5 inches, sections shall have tongue and groove joints with an approved bi.tumastic gasket . Pipe connections shall be of the rubber boot with stainless steel band or approved equal . Manhole frames and shall be cast iron lettered ' Sewer ' and shall be eight inches high. - A11 sewers must pass low pressure air test with a.. maximum allowable leakage rate of 0 .0015 cubic, feet per minute per square foot of internal pipe surface. - k Adequate public liability and property damage insurange as well as a street opeing bond in an amount satisfactory - to the Highway Surveyor will be required for the work on Dale St . Coventry Lane —'`-Water main shall be 8 inch class 52 ductile iron pipe i'pstalled 15 feet from the northerly peoperty line with 5 feet of cover .below the finish grade . 8 inch Mueller or equal gate valves (open'.-Left) shall be provided at sta . 0+0, 10+0, 20+0, 28+13 . Eddy breakflange hydrants to North Andover specifications are to be installed at sta. 2+10, 7+50, 11+70, 17+70, 22+30, 26+30 . + P l ro � 7oventry 'Estates Definiti've.`PI'an I ►,.5 PI� '85 Orchard Path - Water main on Orchard Path shall be 12 inch Class 52 ductile iron pipe from the easterly prperty line, with 5 feet of cover below the finish grade . Eddy breakflange hydrants to North Andover specifictions are to be installed at sta. 3+00 and 8+00 . 16 . The Board hereby waives the the requirements of the Rules, Section IV, subsection A.4(a) allowing the length of the dead end street . Although this development will not permit a looped road system within the subdivision proposal, future connection is possible, deeming this dead end road as a temporary condition. __1.7 . All proposed drainage detention areas shall be noted on plans as drainage easements. ' 18 . Security shall be posted for the purpose of compliance with the subdivision control law pertaining to ' Street Trees ' within the right of way. - 19 . Security in the amount of $18,400 shall be posted with the Board to ensure satisfactory submittal of final as-built and acceptance plans to be recorded at the North Essex Registry of Deeds after review and approval by the Planning Board and Highway Surveyor . 20 . The applicant/owner/developer shall be aware of the fact that approval of this subdivision under the Board ' s Rules will not relieve said parties of the responsibility to other property owners upon whose land may be affected by indirect or direct development storm water discharge. 21 . Roaplway cross sections shall conform to the Rules and Regulations established by the Board. 22 . The developer shall present to the Board prior to any construction activity satisfactory documentation regarding earth removal schedule and hours of heavy construction traffic . A list of' the contractors working in the subdivision shall be forwarded to the Board for their files . 23 . Any discharge of drainage onto Land owned by the Essex County Greenbelt or their successors shall present a letter to the Board stating that the Town of North Andover will. not be responsible for the maintenance of discharge structures or overflow with approval by Conservation. 24. In order to minimize land disruption on site the applicant shall break the construction schedule into a phased program per Section III ,B .h. , whereby the initial. phase will consist of work to be done from sta . 1+00 to 16+00 . All work inlcuding stabilitzation measures shall be completed prior to commencing into phase 2, sta . t Ri:CE.r., n DANIEL LiaNG r K 'oventry Estates "' 00VER Oefinitive Plan DEC 45 pfj fUS 16+0 -to end . Orchard Path construction may take place in the intia.l phase or last phase . The phasing process shall exclude utility and drainage work. Separte completion dates shall be instituted, for each section to be established by the .Highway Surveyor and Planning Board . No lots shall be released from the covenant on each phase until all drainage for each phase has been completed and binder coat is applied. , 25 . The street drainage on Orchard Path shall. be redesigned and redirected away from catch basin on Dale Street and flow into a new drainage structure on Lots 1S and 2S, with an easement running to wetlands on said lots . This redesign will be submitted to the North Andover Conservation Commission for their review and approval . This modification shall serve to eliminate any drainage from impacting the watershed of the lake. 26 .' The Half cul-de-sacs as shown on the submitted definitive plans shall no be permitted. 27 . Lots 17 , 18, 19 South Bradford Street shall not be released from the statutory covenant until another access route to Salem Street has been submitted. for review to the Board and approved under M.G.L. Ch. 41 . 28 . No more than 50 percent tree cutting on each lot shall be permitted within the subdivision. Any tree cutting needed beyond this maximum restriction placed upon the developer' shall appear before the Board for approval to do so. #45 cc: Highway Surveyor. Public Works tree Warden Police Chief Fire. Chief Building Insp. Conservation Board of Health Assessor File Applicant Engineer ,rmandeau Associates NORMAN®EAU A'SSOCIATFS Nashua Road coien" ,gedford, NH 03110-5500 ',iO3)472-5191 73)472-7052(Fax) July 20 , 1995 Atty. Peter Hatem 127 Turnpike Street North Andover, MA ,01845 RE: Lake Cochichewick Watershed Protection District; Proposed Lot Development at Lot #1, Dale Street Water Quanity and Quality Evaluation Dear Atty. Hatem, This letter report represents a Water Quality and Quantity Evaluation associated with the above-referenced project consistent with the Special Permit requirements for proposed developments within the Town' s Watershed Protection District. The purpose of this Evaluation was to assess whether the proposed project would have a significant negative effect on the water quality of Lake Cochichewick. In performing this evaluation, Normandeau Associates reviewed the proposed site plan(dated April 12 , 1995) , conducted a site visit, reviewed the Order of Conditions prepared by the North Andover Conservation Commission(NACC) as well as the revised Watershed Protection Bylaw(Oct. 24 , 1994) and the Lake Cochichewick Watershed Plan(IEP, 1987) . The proposed project consists of constructing a residential dwelling on a one acre lot located on Dale Street which is in the upper headwaters of the Batell ' s Brook subwatershed. The site is about 1. 3 miles from Lake Cochichewick as the stream flows. Runoff generated within the property drains into bordering vegetated wetland along the eastern and western edges of the property which outlet into a large wetland area on the other side of Dale Street and then eventually into Batell ' s Brook. Soils onsite in the upland areas have been mapped as part of the Canton-Charlton complex which are described as a well-drained soils with relatively low runoff potential (SCS, 1981) . The backside or southerly edge of the property essentially coincides with the major drainage divide between the Lake Cochichewick and the Fish River watersheds. The Batell ' s Brook subwatershed consists of 368 acres which make up 13 . 4 percent of the total watershed to the Lake (IEP. 1987) . At the time the Watershed Plan was developed, the principal land uses within the subwatershed consist of forested, residential, and pasture areas which comprise roughly 47 , 26 and 14 percent of the subwatershed area, respectively. Without accounting for any additional residential development that occurred in recent years, the proposed project, using the entire lot area, would add about 1. 0 percent to the total residential area within the subwatershed. Corporate/Northeast RMC Environmental Services Southeast and California Bedford, NH Middleboro, MA Spring City, PA New Ellenton, SC Drumore, PA Greenville, SC Hampton, NH Peekskill, NY Richmond, CA Yarmouth, ME Lakewood, NJ Brattleboro, VT A arvision of Thermo Process Systems Inc.a Thermo Electron company - NORMANDEAU ASSOCIATES page 2 / As shown on the site plan, only about 15 percent of the lot area or 6 , 500 sf will be disturbed to accomodate the structure footprint(1, 613 sf) , paved driveway(1, 200 sf) and associated grading. The house will be connected to the municipal sewer system through a new force main that will be installed along the north side of the Dale Street right of way and will tie into the existing sewer main several hundred feet east of the site. The primary water quality concerns associated with this project relate to the added nutrients, particularly phosphorus and nitrogen, potentially contributed from various sources. Phosphorus is of concern because of its effect on the eutrophication process in the Lake. Nitrogen, in the form of nitrate-nitrogen, can be of concern if drinking water contains levels above 10 mg/l. Since a septic system is not required with this home development, one principal source of nutrients has been eliminated. The remaining sources relate to the potential nutrient contributions from lawn fertilizer and soil erosion. Based on water quality sampling results presented in the Watershed Plan, the annual phosphorus inputs from the Batell's Brook watershed is estimated to be 103 pounds (lbs) or about 8 percent of the total load to the Lake. Based on literature values, contributions from residential areas are expected to range between 0. 31 and 0. 54 lbs/acre(IEP, 1987) . Using an average loading rate of 0. 4 lbs/ac/yr, the phosphorus load from this site would amount to about 0. 4 percent of the total phosphorous contribution from the Batell's Brook watershed and 0. 03 percent for the entire Lake watershed. Given the minimal site disturbance, discussed above, and the lack of septic system inputs, loading from this particular site would be expected to be considerably lower and would have negligible impact on the Lake particularly with respect to the existing residential areas within the watershed. With respect to nitrogen, the point of concern is not so much the lake but at the property boundary where groundwater recharged onsite may enter a well used by an adjacent landowner. The NACC Order of Conditions requires that only low nitrogen content fertilizer(i.e. , generally considered to be less than 20 %) can be used. The nitrogen content in commercially-available lawn fertilizers generally ranges between 5 and 35 percent depending on the manufacturer and type of material. As an example, the SCOTTS TM Turf Builder generally contains 32 percent nitrogen with a prescribed application rate of about 16 pounds per 5000 sf of lawn twice a year (Spring and Fall) . N®RMANDEAU ASSOCIATES page 3 For purposes of estimating a worst-case, nitrate-nitrogen concentration at the property boundary on a average annual basis, it was assumed that fertilizer with 35% nitrogen content was applied four times a year at 16 lbs per 5000 sf.. (As discussed earlier, given the site plan layout only about 3700 sf would be available for lawn area after discounting for the driveway and building area) . This -translates into a total application of 22 .4 lbs of N per year. Most of the applied nitrogen would be utilized by the vegetation or bound up in the soil. Previous studies have documented minimal nitrogen losses to groundwater from turfgrass fertilizer applications(Starr and DeRoo, 1981; Morton et al. , 1988) . A study conducted at the University of Rhode Island found that only 13% of the applied N was lost to the groundwater at an application rate of 28 . 5 lbs/ac/yr and under overwatering conditons (Morton et al. , 1988) . Again, to provide a conservative analysis, 50 percent or 11. 2 lbs of the applied N is assumed to enter the groundwater. To determine an appropriate dilution volume, it was assumed that 50 percent of the annual precipitation(i.e. , 43 . 0 inches) evaporates or is transpired by vegetation, leaving 21. 5 inches to infiltrate into the groundwater or travel as runoff. The soil in this area has been mapped as the Canton-Charlton complex, which consists of well drained soil with relatively low runoff potential (SCS, 1981) . At a minimum, about 50 percent or 10. 75 inches of the available water would be expected to infiltrate into the groundwater. Additional recharge from watering is not included. As a result, given the assumed loss of applied N and the estimated groundwater recharge onsite, an average annual nitrate-N concentration at the property boundary is estimated to be 4 . 6 mg/1. This concentration based on worst-case assumptions is well below the drinking water standard of 10 mg/1. In reality, with a low nitrogen content fertilizer, as required, a normal application rate of twice a year and a realistic assumption of plant uptake, the nitrogen concentrations in groundwater are likely to be a fraction of the above value that is based on conservative assumptions. In summary, given the size of the proposed development, its location within the watershed, the minimal amount of lot disturbance as presented on the site plan and the results of the nutrient loading analyses discussed above, I would not anticipate any adverse effect on the water quality of Lake Cochichewick as a result of the proposed project. With respect to soil erosion measures, I find that the proposed hay bale/silt fence barrier should be more than adequate given the amount of disturbed area proposed, provided the barrier is installed properly and maintained until vegetation is re-established. NORMAN®EAU ASSOCIATES i page 4 REFERENCES IEP, Inc. 1987 . Lake Cochichewick Watershed Plan. Final Report. North Andover, Massachusetts. Morton, T.G. , A.J. Gold, W.M Sullivan. 1988 . Influence of Overwatering and Fertilization on Nitrogen Losses from Home Lawns. Journal of Environmental Quality, Vol. 17, No. l. Starr, J.L. and H.C. DeRoo. 1981. The Fate of Nitrogen Fertilizer Apllied to Turfgrass. Crop Science, Vol. 21. U. S. Soil Conservation Service. 1981. Soil Survey of Essex County, Massachusetts, Northern Part. If you have any questions, please do not hesitate to call me. Sincerely, NORMANDEAU ASSOCIATES William R. Arcieri Senior Water Quality Scientist cc: Steve Stapinski, Merrimack Engineering Town of North Andover f NORTH 9 . OFFICE OF 3?Ott�co 'c ca�OL COMMUNITY DEVELOPMENT AND SERVICES A 146 Main Street 9 KENNETH R.MAHONY North Andover,Massachusetts 01845 S SAC AC H �5 9ACNUS�S Director (508) 688-9533 November 20, 1995 Mr. James Colantonio Coler & Colantonio 101 Accord Park Drive Suite One Norwell, MA 02061 Re: Lot 1 Dale Street Dear Mr. Colantonio, As per our discussion this afternoon I am sending you a copy of the application, plan, and watershed report concerning Lot 1 Dale Street. I have also enclosed a copy of the current Watershed Protection District rict Bylaw. As you will see from the application, there is a legal issue concerning the appropriate bylaw. The lot was created in 1985 therefore the applicant is asserting that the 1985 bylaw applies. We are asserting that the 1995 bylaw applies. I have sent this issue out to our town counsel for a resolution. Therefore, please hold off on the actual review of the project until this issue is resolved. However, I would like your opinion as to whether your firm is qualified to conduct this type of review. The current Bylaw requires: 1. Written certification from a registered professional engineer (or other person trained in hydrogeology) that the project not cause any significant degradation of the quality of quantity of water in or entering Lake Cochichewick. 2 . Proof that there is no reasonable alternative location outside the non-disturbance zone. 3 . Evidence that all on-site operations including but not limited to construction, waste water disposal, fertilizer applications and septic systems will not create concentrations of Nitrogen BOARD OF APPEALS 688-9541 BUILDING 688-9545 CONSERVATION 688-9530 HEALTH 688-9540 PLANNING 688-9535 Julie Parrino D.Robert Nicetta Michael Howard Sandra Starr Kathleen Bradley Colwell Town of North Andover o� AORoT"�ti OFFICE OF �? y°` COMMUNITY DEVELOPMENT AND SERVICES ° . A 146 Main Street -1 Q41Tf0''p �y KENNETH R.MAHONY North Andover, Massachusetts 01845 "SSACHust` Director (508) 688-9533 Fax Transmittal Sheet To: Fax # From: Kathleen Bradley Colwell, Town Planner Date: J mi Ya/ %co. yA Re: L®; 1 U U - or ® Total number of pages (including cover sheet) BOARD OF APPEALS 688-9541 BUILDING 688-9545 CONSERVATION 688-9530 HEALTH 688-9540 PLANNING 688-9535 Julie Parrino D.Robert Nicetta Michael Howard Sandra Starr Kathleen Bradley Colwell U COLANTONIOZ ENGINEERS AND SCIENTISTS February 19, 1996 11 s r it v Ms. Kathleen Colwell �I � FBI Ill' Town of North Andover - 146 Main Street North Andover,MA 01845 RE: Engineering Review Lot 1 Dale Street Special Permit Dear Ms. Colwell: As requested, Coler & Colantonio, Inc. has reviewed the submittal prepared by Merrimack Engineering Services. The Application is not dated, however the plans are dated April 12, 1995. It is our understanding that the purpose of this review is to evaluate the Application for conformance with the requirements of the Watershed Protection District as they relate to a Special Permit Application for a lot created prior to 1994. It is our further understanding that the Bylaws dated"Final 10/13/94"are the governing regulations. We offer the following comments: 1. The parcel lies within the Watershed Protection District. The site is a 43,874 square foot parcel of land on the southeasterly side of Dale Street. Wetlands flank both sides of the site. 2. The proposed limit of work is within 37.5 feet of wetlands along the west side of the site and 43 feet on the easterly side. The Bylaw requires a setback of 100 feet as a non-disturbance zone. 3) The limits of the "Non-Disturbance" zone are not indicated on the plan as required in the ` , Bylaw. The entire locus lies within the"Non-Discharge"zone. 4. A report addressing the impact of site development on water quality in Lake Cochichewick was prepared by Normandeau Associates. If the Board is not familiar with the typequalifications of work„�Quld be pro vdedcratThe�analys sntpresented qualifications eason reasonable the individual site except as noted below. The Planning Board should also consider the i"i � iti .. y quality ...,,. . i . .. �p . We incremental degradation of water ualit in the lake due to other similar projects., question the assumption that onl 3700 s ure feet of the site will be landsca ed area,,, The plan indicates a zone of approximately 10 to 15 feet around the building and driveway as the limit of work. This will be difficult to enforce after construction and provides very limited construction work space. It is likely that a future homeowner.would wish to expand ” stated A restriction on the deed limiting the developed portion of the lot to the area stad should the yard, area to the lot.,be required as part of.any,approval. '10'1 Accord Park Drive, Suite One 617-982-5400 Norwell, MA 02061-1685 Fax: 617-982-5490 5. The elevation of the cellar floor in the proposed building is below the elevation of wetland areas on site. It is likely that groundwater lj.be,ericountered in the excavation for the cellar and will be a problem relative to infiltration of groundwater into the cellar. Typically, this would be controlled through the use of a sump pump. The regulations require that designs recharge runoff to the extent feasible if a sump pump is used this _m w would have the effect of pumping groundwater to a surface discharge point. We recommend that a test pit be excavated and observed by a certified soil evaluator to estimate the maximum seasonal high groundwater table. The proposed cellar floor elevation should be a minimum of one foot above this elevation. 6. The plans indicate a grass Swale which would collect runoff along the easterly side of the building for discharge across the driveway to Dale Street. It also appears that a small depression on the easterly side of the proposed driveway, in the Dale Street layout would be created. We do not recommend creating a trap for water in the layout of a public_street. The proposed swa el——w—oufd-discharge to an _e isting zditch along Dale Street. The `regulations require that site runoff from impervious areas be .recharged__to the extent feasible. The proposed Swale does not address this requirement Based on the report by go--r ndeau Associates, soils on the site should be suitable for on sh' recharge. C7) It does not appear possible to grade to the limits shown on the plan along the westerly side of the driveway in the vicinity of the proposed 196 and existing 198 contours. We appreciate the opportunity to assist the Planning Board on this project and hope that this information is sufficient for your needs. If you have any questions please do not hesitate to contact us. Very truly yours, COLER& COLANTONIO, INC. C John C. Chessia,P.E. xc Merrimack Engineering Services COLANTONIOZ ENGINEERS AND SCIENTISTS January 10, 1996 Planning Board c/o Ms. Kathleen Bradley Colwell ° Town Planner Town of North Andover 120 Main Street North Andover,MA 01845 RE: Engineering Review Lot 1 Dale Street Proposal No. 1-516 Dear Ms. Colwell: Coler & Colantonio, Inc. is pleased to provide you with this proposal to perform engineering services associated with the above project. It is our understanding that we are to review the plans and calculations for the above referenced single family house lot in the Town of North Andover. Specifically, our review would issues associated with the Special Permit filing under the Watershed Protection District Bylaw. The plans would also be reviewed for conformance to standard engineering design practices. Included in this proposal is a Scope of Services which outlines the specific tasks to be performed, a listing of Additional Services which are excluded from this contract, and discussions of Schedule,Fee and Basis of Payment. 1.0 SCOPE OF SERVICES 1.1 Review the plans and calculations for conformance with the requirements of the Watershed Protection District Bylaw as well as standard engineering practice. 1.2 Visit the property to observe existing conditions on the site. 1.3 Prepare a letter report commenting on the plans and calculations. 101 Accord Park Drive, Suite One 617-982-5400 Norwell, MA 02061-1685 Fax: 617-982-5490 2.0 ADDITIONAL SERVICES Coler& Colantonio,Inc. would be pleased to provide the following additional services, if required or desired, for mutually agreed upon additional compensation. Such additional services would involve fees in addition to what is indicated in Section 4.0 of this proposal. Attached is a Fee Schedule which will be used to establish billings for services not specifically covered by this contract. 2.1 Attendance at meetings. 2.2 Additional review or preparation of additional reports. 2.3 Additional field visits. 3.0 SCHEDULE Coler & Colantonio, Inc. will commence work upon receipt of written authorization to proceed. Typically one to two weeks are required to perform the tasks listed in the Scope of Services. 4.0 FEE The fee to perform the services listed in the Scope of Services would be $1500 for the information in hand. This is a not to exceed fee for the tasks listed in the Scope. You will be billed based on actual hours worked on the project. Fees for services listed under Additional Services, if required, would be billed on a time and materials basis in accordance with the attached Fee Schedule. The fees described above do not include expenses. Expenses such as mileage, reprographic costs, etc. would be billed at cost plus a fifteen percent (155%) administrative charge. 5.0 BASIS FOR PAYMENT Invoices for services will be submitted monthly. By the signing of this proposal, it is agreed and understood that payment will be made upon receipt of the invoice. The owner/client agrees to limit the liability of Coler & Colantonio Inc. to the owner/client and to all construction contractors and subcontractors on the project arising from Coler & Colantonio, Inc.`s negligent acts, errors or omissions such that the total aggregate liability of Coler& Colantonio, Inc., will not exceed the contract amount. It is further understood that any balances on this account remaining unpaid for a period of 30 days will incur a service charge of 1-1/2% per month (expressed as an annual percentage rate, the charge is 18%). It is further agreed that if said account is turned over for collection, reasonable attorney's fees and costs of collection shall be added to the unpaid balances, whether or not legal action is instituted. Coler & Colantonio, Inc. reserves the right to stop work on the project if invoices are not paid within 30 days of the date of the invoice. Prior to doing any work on the property, we reserve the right to post a notice of contract. The parties to this contract specifically agree that Coler & Colantonio, Inc. has no obligation to release drawings or other documents until the final bill for services has been paid. By signing this letter, you indicate your acceptance of the terms and conditions contained herein and you will give us authorization to proceed with the scope of work indicated. Sincerely, COLER& COLANTONIO, INC. C4 John C. Chessia, P.E. Approved By: Agreed to and Accepted for Basis of Payment By: James J. Colantonio, Pres. Date: Date: COLER& COLANTONIO,INC. FEE SCHEDULE November 6, 1995 POSITION BILLING RATE Principal Engineer and Surveyor $ 120/hr. Division Manager $ 65 - 105/hr. Professional Engineer/ Professional Land Surveyor $ 60 - 80/hr. Project Manager $ 55 - 70/hr. Level 1 Engineer Scientist and Surveyor $ 50 - 65/hr. Level 2 Engineer Scientist and Surveyor $ 40 - 55/hr. Level 3 Engineer Scientist and Surveyor $ 35 - 40/hr. Draftsperson $ 35 - 45/hr. Technician $ 25 - 40/hr. Support Staff $ 25 - 40/hr. FIELD SURVEY Two -person field crew and equipment $ 75 - 100/hr. TOWN OF NORTH ANDOVER, MASSACHUSETTS OFFICE OF CONSERVATION COMMISSION 10RTN 9 �°` Ee °`° 0 TELEPHONE 683-7105 a ,-..g:.,y ,. A ��SSAGHU DATE: December 10, 1985 TO : Planning Board FROM: Willie Vicens, Chairman SUBJ: Coventry Estates The NA CC visited the project site several weeks ago, held, a public hearing on the Notice of Intent for this project on Wednesday December 4th and Tracy Peter visited the site again. on Thursday December 5th, Based on these site visits and public hearing we have determined that some additional information is required before we can issue an Order of Conditions. Copies our letters to the applicant have bden sent to you. Overall we have the following comments on this project: 1. Watershed District: The portion of the site fronting on Dale Street lies in the watershed district. It is likely. that we would,impose conditions to re- el strict development within 100 feet of the wetlands on Lots l through 5. Such restrictions may make these lots unbuildable. Extent of Wetlands: We believe the wetlands on the site are more extensive than shown on the plans dated November 8, 1985. Specifically, there are wetlands on Lots 72 through 16, and Lots 31 and 32. 3. Runoff Control: The current project does not include runoff control measures or the portion of the property draining to South Bradford Street. This is unacceptable to the NACC and provisions must be made for on-site or off-site runoff control. 4. Steep Slopes: Some of the lots will have very steep slopes. Both temporary erosion control during construction and permanent stabilization after completion should,be provided in these lots (e.g. , 17 through 30) . We hope these comments are of help. 1�@ L9 0 Y l DEC 1 01985 PLANNING BOARD Principal Points upon which Application is Based This lot was created in 1985 as part of the Coventry subdivision. A preliminary subdivision plan was filed The definitive subdivision plan was approved by the Planning Board on December 16, 1985 . The Planning Board endorsed the plan on MBW04N 2 y ► 1986 The property was subject of litigation with the North Andover Conservation Commission which began in May, 1991 . The litigation concluded in Essex Superior Court in May, 1995 . The I Conservation Commission's appeal of a Superseding Order of i Conditions issued by the Department of Environmental Protection (DEP) is pending, but the issue is expected to be resolved along the same terms as that of the Superior Court litigation. The lot is subject to the provisions of the zoning bylaw in I i _Zfect when the preliminary subdivision plan was submitted. The eight-year zoning freeze provided by MGL c. 40A s . 6 , and MGL c.41 s. 81Q, is extended by the period of any litigation involving the right to develop the property. Under the zoning bylaw in effect in 1984 , no construction is to take place within one hundred ( 100) feet horizontally from the edge of tributaries of Lake Cochichewick except by special s permit. The applicant believes that the current plan meets the j conditions for a special permit listed in Section 10 . 31, par. 1, Items a. through e. , of the 1984 bylaw. Specifically, the single-family home proposed for the site is : a. An appropriate location for the residential use proposed; b. Will not adversely affect the neighborhood; c . Will not be a nuisance or serious hazard to vehicles or pedestrians . Further, d. Adequate and appropriate facilities will be provided for the proper operation of the proposed use, viz. , the dwelling will be connected to town water and the site is sewered; and I e. The proposed single-family dwelling is in harmony with the general purpose and intent of the bylaw. Enclosed with this application is a Water Quality and Quantity Evaluation report from William R. Arcieri, Senior Water Quality Scientist of Normandeau Associates . He concludes in the report that there will not be " . . .any adverse effect on the water tality of Lake Cochichewick as a result of the finished project. " The primary water quality concerns associated with this project relate to nutrients, particularly phosphorus and nitrogen, potentially contributed from various sources . Mr. Arcieri's report contains a detailed explanation of how each of these added nutrients will be handled. Further, under the North Andover Conservation Commission's Order of Conditions , soil erosion measures, including the required hay bale/silt fence barrier should be more than adequate, given the reduced amount of disturbed area. I i An earlier application to the Planning Board for a special Pf 3rmit contemplated a house with a footprint, seventy ( 70) feet wide by thirty-four (34 ) feet deep. The house was oriented across the lot, reaching toward each of the wetlands . The current proposal--which has been approved by the Conservation Commission --is for a structure with far less impact. It calls for a footprint only thirty-two ( 32) feet wide by fifty-nine (59 ) feet deep. Other lots in Coventry have obtained special permits for the construction of single family homes within one hundred ( 100 ) feet of a lake tributary. [See special permits granted for Lots 2A and Lot 3A] Moreover, at least twenty-six (26) special permits for construction of single family dwellings within 100 feet of a tributary of Lake Cochichewick or a wetland in the Watershed Protection District have been granted by the Planning Board from 1982 to the present, many substantially closer to the lake or a major tributary. G208032 Article 10. IMPLEMENTING COLLECTIVE BARGAINING AGREEMENTS. To be see exif the Town will vote to raise and appropriate the sum of $ under the direction of the Board of Selectmen for the purpose of implementing collective bargaining agreements reached with Town contractual employees. (Petition of the Selectmen) VOTED to approve the article in the amount of $82,950. WATERSHED DISTRICT PRESERVATION ARTICLES (11-15) Article 11. COMPREHENSIVE PLANNING STUDIES FOR WATERSHED DISTRICT. To see if the Town will vote to raise and appropriate or take from available funds the sum of $ 75 ,438 to be expended under the direction of the Board of Selectmen for the purpose of undertaking certain comprehensive planning studies in connection with the preservation of Lake Cochichewick and the public drinking water VOTED to approve the sown of North written.Andover. (Petition of the Selectmen) PP Article 12. WATERSHED DISTRICT TEMPORARY GROWTH LIMITATION. To see if the Town will vote to amend Section follows Watershed District, of the Zoning Bylaw, by adding a paragraph (4) , as " (4) Lake Cochichewick Preservation Amendment a) Notwithstanding anything contained in this bylaw to the contrary, no permits shall be issued for the construction of any new building, structure, road, or driveway or for earth removal, except for the proposed municipal water filtration plant, within the Watershed District for a period of three (3) years from the effective date of this amendment. b) This amendment shall not apply to any renovation, alteration, or addition to an existing u bu , ild ing structure, road, driveway, or any agricultural or horticultural use. c) A use variance may be granted by the Board of Appeals for the issuance of a building permit within this three-year period but not for a use not otherwise allowed by the district regulations. (Petition of the Selectmen) EXPLANATION: This amendment provides for a three-year prohibition on the issuance of building permits and special permits in the Watershed District, to provide controlled development in the Watershed District while the appropriate Town boards, commissions, and officers conduct and implement a comprehensive planning study, pursuant to the terms of the previous warrant article, relative to the preservation of Lake Cochichewick, our source of water supply; recognizing that a proposed water filtration plant for the Town's public drinking water supply is not expected to be completed until 1988 . Exempted by General Laws from the provisions of this amendment followed by lots a sdown in a definitive subdivision plan, or a preliminary plan plan within seven (7) months, submitted to the Planning Board and written notice of which is given to the Town Clerk prior to the date on which this amendment is voted upon at Town Meeting. Also exempt by the General Laws from the provisions of this amendment are lots shown ondefinitvetosubdi isi noflans endorsed by the Planning Board within eight (8) years prior the vote of Town Meeting on this amendment; and lots shown on Form A plans, so-called, so endorsed within three (3 ) years prior to the date of said vote. " VOTED to approve the article as written (by a unanimous vote) . 111 COLER & COLANTONIO Z ENGINEERS FACSIMILE COVER SHEET To: Heidi Griffin Company: Planning Board Phone: 978-688-9535 Fax: 978-688-9542 From: Jason Loiselle Company: Coler & Colantonio, Inc. Phone: 781-982-5400 Fax: 781-982-5490 Date: October 15, 1999 Pages including this cover page: 1 Comments: Heidi, We have reviewed the submitted "Water Quality Evaluation"for Lot#1 Dale Street performed by Wetland Preservation Inc. dated October 5, 1999 for conformance with the Town's Watershed Protection District Bylaws. This study indicates no significant impact to the Water Quality of Lake Cochichewick. Reportedly, the proposed nitrogen loading will be 1/10 the required minimum drinking water standard and the proposed phosphorous loading will cause a 0.05% increase in the loading. The loadings, as reported, were modeled using the development of the entire lot and are thus conservative in their results. If you have any questions, please call me 781-982-5434. Jason XC: Jim Rand (978) 688-9573 Merrimack Engineering (978)475-1448 U COLANTONIOZ ENGINEERS AND SCIENTISTS July 15, 1999 Heidi Griffin Planning Board 27 Charles Street North Andover, MA 01845 RE: Supplemental Engineering Review Lot 1 Dale Street Special Permit Dear Ms. Griffin: In response to your request, Coler & Colantonio, Inc., has reviewed the requirements for the Watershed District Special Permit for the above referenced project. Plans have been reviewed for conformance under these submittal requirements and standard engineering practice. The submittal package included the following information: Plan Entitled: • "Site Plan of Land in North Andover, Mass " one sheet dated June 29, 1999. Prepared by Merrimack Engineering. Received July 12, 1999. • Response letter and test pit information dated July 9, 1999. Prepared by Merrimack Engineering. Received July 12, 1999. The following comments are supplemental to our original review letter dated February 19, 1996. A copy of this letter is attached. 1. No further comment. 2. No further comment. 3. No further comment. 4. No further comment. 5. Test pits logs have been provided.The logs submitted indicate the cellar floor to be constructed approximately 0.5-feet below the high groundwater elevation. In addition, the proposed roof recharge infiltrators will provide 1.5-feet of separation from groundwater. It is recommended that a separation of 2-feet of groundwater separation be provided for groundwater infiltration. 6. The proposed swale on the eastern side of the driveway will drain into the roadway or will accumulate at the street line. 7. The contours on the westerly side of the driveway have been satisfactorily modified. 101 Accord Park Drive 781-982-5400 Norwell, MA 00061-1685 Fax: 781-982-5490 We appreciate the opportunity to assist the Planning Board on this project and hope that this information is sufficient for your needs. If you have any questions please do not hesitate to contact us. Very truly yours, COLER & COLANTONIO, INC. C av'�1�4 Yhn JC. Chessia,P.E. xc: Merrimack Engineering, Inc. Jim Rand,DPW Coler ♦ • • • FcApix To: Heidi Griffin From: John Chessia Fax: 978-688-9542 Pages: 3 Phone: 978-688-9530 Date: 07/15/99 Re: Supplemental Engineering Review XC: Jim Rand 978-688-9573 Merrimack Engineering, Inc.978-475-1448 ❑ Urgent Q For Review ❑Please Comment ❑ Please Reply ❑ Please Recycle LAW OFFICES 127 TURNPIKE STREET NORTH ANDOVER, MASSACHUSETTS 01845-5095 VICTOR L. HATEM (978) 685-3368 ALSO ADMITTED IN N.H. _9Q ulp FAX: (978) 682-1712 JOSEPH V. MAHONEY PETER L. HATEM ALSO ADMITTED IN FLORIDA AND N.H. JOHN E. MAHONEY July 9, 1999 _ -- John C. Chessia, P.E. + J U L '1 2 1999 Coler& Colantonio, Inc. U U L 4 1999 101 Accord Park Drive, Suite One Norwell, Massachusetts 02061-1685 Re: 475 Dale Street Special Permit Dear Mr. Chessia: Enclosed please find a Rooftop Leaching System Design, Soil Suitability Assessment for On-site Sewage Disposal and two Site Plans of Land for the above referenced property. Should you have any questions, please contact me. Very truly yours, Peter L. Hatem PLH/bld Enclosures H:\G2080\Ltr to John Chessia 7-9-99.doc 1 FORM 11 - SOIL EVALUATOR FORN1 Page 1 Commonwealth of Massachusetts Isom A►.iDorez , Massachusetts ' foil Suitability Assessment for On-site Sewage Disno al STo2f✓1wrt � I—i Gt-t.t . 001,Y C.�S Gro1�i►� Performed By: ...................... ............................... .............. ....................................... Witnessed By: ......................... ........................... l cation Address or Address,ud Art`I- � ATr-" L- `T"�.� ( "r L . I LI—7 C45V ( rekph= I I Z7 -rW*.�A rS sT- DAI�G S'l t:T ►,1D• A Cb�IE,(Z�1-1A•Ol$�{S u3. 674 s.F. New construction ❑ Repair ❑ Office Review Published Soil Survey Available: No ❑ Yes Year Published ..�.�g�.. Publication Scale 1. .ISgyd Soil Map Unit .. �-� DrainageClass WD..... Soil Limitations ............................................................................................................._ Surficial Geologic Report Available: No ❑ Yes ❑ Year Published .. -- Publication Scale GeologicMaterial (Map Unit) ......:............................................................................................................................ Landform ................. ............................................................................................................................ .......... Flood Insurance Rate Map: 2SbOg8 000 Clo-2-�t 3 Above 500 year flood boundary No ❑ Yes Within 500 year flood boundary No ❑ Yes ❑ Within 100 year flood boundary No ❑ Yes ❑ Wetland Area: o National Wetland Inventory Map (map unit) .........f.>...�........�..tT�....�.�r-�-t��9�[-.�-1................ Wetlands Conservancy Program Map (map unit) .......................................................................... Current Water Resource Conditions (USGS): Month MA Range : Above Normal � ❑ ormal Below Normal El I�S�vt�GJ� Other References Reviewed: V5, 6 ,5- l✓IAPS FOphj II - SOIL EVALUATOR FORM Page 2 Ors-site Review Deep Hole Number ........ Date: Time: weather �o........ Y' ............................ Z.......FIA..................................................................................I............................. Location (identify on site plan) S .— Land Use ....................... Slope (oAl ....10...... Surface Stones .... Y...............................I....................... .................................................................... VegetationPAAC-L... .................................................................................................... Landform ................I.........................1-.............. position on landscape (sketch.on the back) •••••....•••................................................................ Distances from: Drainage way feet Open Water Body feet Possible Wet Area feet Property Line .........•••.••••-• feet Drinking Water Well feet Other ................................ il Texture Soil Color Soil Mottling Other So Depth from Surface Soil Horizon (Munsaill (Struure,ct Stones,Boulders, (Inches) (USDA) Consistency, %Gravel) zo^ 6FAV, ze - loo, G 6FAV. S-1— I D\4 V-5/ 7,S-f(zVf3 too 9� —N-- V, &12- qz" poege-j-jc, of 3A.WD, Parent Material (geologic) ..... ................................................... Depth to Bedrock: aeSIhAo- Groundwater: Standing Water in the Hole: Weeping from Pit Face: ...... Estimated Seasonal High Ground Water: qz".. Komi It - SOIL EVALUATOR FORM Page 2 ' Deep Hole Number ... ..........••• Time, Weather ..... �4y Location (identify on site plant SE!E.........N.................I........................................................................................................................... Land Use .................... Slope (%I ...... Surface Stones ..... ............................... ............... Vegetation . .............................................................................................................. Landform .......................I.......................................... . . ... ............................................................................................................... position on landscape (sketch.on the back► ...... ... ................ I. Distances from: Open Water Body feat Drainage way....S: ••.• feet Possible Wet Area ... feet Property Una ................... feet Drinking Water Well ...... ... feet Other ......................................... I F T DEEP OB N ROME DG Soil Texture Soil Color Soil Mottling Other Depth from Surface Soil Horizon (USDA) Imunselli (Structure,Stones,SoLdoers, (Inched Consistency, %(travel) 10 A toc> 35."-60 H � Vr- &- 6FAV t. S C)�3 t 10TT14D A >1G. S KG Parent Material (geologic) ..... TI LL.......................................................... Depth to Bedrock:qq pnpLh Gr ....... Weeping from Pit Face: _jo_ 2gadwiLer, Standing Water in the Hole: Estimated Seasonal High Ground Water: FORM 11 - SOIL EVALUATOR FORM Page 3 Determination for Seasonal High Water Table Method Used: ❑ Depth observed standing in observation hole................... inches ❑ Depth weeping from side of observation hole .......... inches 9 Depth to soil mottlesQZ.,.YZ inches ❑ Ground water adjustment .......... feet Index Well Number ................... Reading Date ...- Index well level Adjustment factor �. Adjusted ground water level .............................: ......................... Depth of Naturally Occurring Pervious Material TW0 ervious material exist in all areas Does at least4ww feet of naturally occurring p observed throughout the area proposed for the`soil absorption system? If not, what is the depth of naturally occurring pervious material? Certification certify that on (date) I have passed the examination approved by the Department of Environmental Protection and that the above analysis was performed by me consistent with the required training, expertise and experience described in 310 CMR 15.017. Signature Z� 5V �—� Date -2`t- FORM 12 - PERCOLATION TEST COMMONWEALTH OF MASSACHUSETTS 1 10V� A 3...cOavGtG Massachusetts Percolation Test S-2o- Time: �`1................... Observation Hole # I P 2 Depth of Perc F-Z � '+ I-7 ' . 14� „ Start Pre-soak End Pre-soak 1 : Z-1 2 Time at 12 � , 2-7 Time at 9" 2 Time at 6" 2; p Time (9.._6.,) 23 O Rate Min./Inch %2 Mi�j �►I� Site Passed Site Failed ❑ Performed By: U Witnessed By: Comments: 0 C®Lr/_\NT N1 Z ENGINEERS ANO SCIENTISTS February 19, 1996 Ms. Kathleen Colwell Town of North Andover 146 Main Street North Andover, MA 01845 RE: Engineering Review Lot 1 Dale Street Special Permit Dear Ms. Colwell: As requested, Coler & Colantonio, Inc. has reviewed the submittal Mer i ack Engineering Services. The Application is not dated, howev er p lans are dated April It is our understanding that the purpose of this review is to evaluate the Application for to a conformance with the requirements of the Watershed Protection our further understanding as they relate that the Special Permit Application for a lot created prior to 199 Bylaws dated"Final 10/13/94" are the governing regulations. We offer the following comments: I. The parcel lies within the Watershed Protection District• d of the s foes of land on the southeasterly side of Dale Street. We tlands flank both s and 2. The proposed limit of work is within 37.5 feet of wetlands along the feet as a side o of the site ban e 43 feet on the easterly side. The Bylaw requires a setback of zone. 3. The limits of the "Non-Disturbance" zone are not indicated on the plan as required in the Bylaw. The entire locus lies within the Non-Discharge"zone. 4. A report addressing the impact of site development on water d quality in Lfa e ochichewick e the was prepared by Normandeau Associates. If the Board qualifications of Normandeau Associates a statement of their qualiica ions o pe eofo this type of work should be provided. The analysis presented a pp e the individual site except as noted below. The Planning Board should also consider the incremental degradation of water quality in the lake due to other similar projects. We question the assumption that only 3700 square feet of the site will be landscaped area. The plan indicates a zone of approximately 10 to 15 feet around the building and driveway as the limit of work. This will be difficult to enforce after construction and provides very limited construction work space. It is likely that a future homeowner would wish to expand the yard area on the lot. A restriction on the deed limiting the developed portion of the lot to the area stated should be required as part of any approva l 101 Accord Park Drive, Suite One 617-982-5400 17 a17-9R?-5490 5. The elevation of the cellar floor in the propoWle encountered dbbluntbelow in thelexcavat on for wetland the areas on site. It is likely that groundwater cellar and will be a problem relative to infiltration of groundwater The the cellar. Typically, this would be controlled through the use of a sump Pump. um is used this require that designs recharge runoff to feasible surfaces discharge point. We would have the effect of pumping groundwater to recommend that a test pit be excavated observed by certified evaluator estimate the maximum seasonal hg h groundwater table. The proposed cellar floor elevation should be a minimum of one foot above this elevation. 6. The plans indicate a grass swale which would cDaect runoff alt na also appears that a small building for discharge across the driveway depression on the easterly side of the proposed driveway, rnnhhellayoutt of apublic street. be created. We do not recommend creating p The The proposed swale would discharge to � xisting re totrthe extent regulations require that site runoff from p evious areas feasible. The proposed Swale does not address beis requirement. .Be sed on the report by Normandeau Associates, soils on the site should 7. It does not appear possible to grade to the limits shown on the plan g she westerly side of the driveway in the vicinity of the proposed 196 and existing 19 conto We appreciate the opportunity to assist the Planning Board on i project and hope that this do not hesitate to information is sufficient for your needs. If you have any que st p contact us. Very truly yours, COLER& COLANTONIO, INC. C John C. Chessia,P.E. xc Merrimack Engineering Services COLER COLANTONIO Z ENGINEERS nND SCIENTISTS February 19, 1996 Ms. Kathleen Colwell Town of North Andover 146 Main Street North Andover,MA 01845 RE: Engineering Review Lot 1 Dale Street Special Permit Dear Ms.Colwell: As requested, Coler & Colantonio, Inc. has reviewed the submittal prepared by Merrimack Engineering Services. The Application is not dated, however the plans are dated April 12, 1995. It is our understanding that the purpose of this review is to evaluate the Application for conformance with the requirements for a lot created prior to 994P It isconr furtheccunderstand understanding that the Special Permit Application Bylaws dated"Final 10/13/94" are the governing regulations. We offer the following comments: 1. The parcel lies within the Watershed Protection Street. Wetlands flank both sides of the sit of parcel of land on the southeasterly side o f Dale 2. The proposed limit of work is within 37.5 feet of wetlands along the west side of the site and 43 feet on the easterly side. The Bylaw requires a setback of 100 feet as a non-disturbance zone. 3. The limits of the "Non-Disturbance" zone are not indicated on the plan as required in the Bylaw. The entire locus lies within the"Non-Discharge"zone. 4. A report addressing the impact of site development If the Board quality in Lake Co hwith ewthe was prepared by Normandeau Associates dorm this qualifications of Normandeau Associates a statement of their qualification amble for the type of work should be provided. The analysis presented appears individual site except as noted below. The Planning Board should also consider the incremental degradation of water quality in the lake due to other similar projects. We question the assumption that only 3700 square feet of the site will be landscaped area. driveway plan indicates a zone of approximately 10 to 15 feet around the building and y the limit of work. This will be difficult to enforce after construction and provides very limited construction work space. it is Iikel�that�futmiting the�developcd would portiontof the to the yard area on the lot. A restriction on art of any approval. to the area stated should be required as p ,n, nrrnrd Park Drive.Suite One 617-982-5400 Project 1330 Atty. Peter Hatem-North Andover,Massachusetts Rooftop Leaching System Design This report provides calculations demonstrating that the proposed rooftop leaching systems satisfy the requirements of DEP's Storm Water Management Standards. Storm Water Quality Pre-Treatment and Volume of Treatment Standards Runoff from residential rooftops is to be considered uncontaminated per Storm Water Management Standard No. 1. Thus, there is no requirement for pretreatment or volume of treatment. Storm Water Quality Volume of Infrftration Standard The project soils are predominately hydrologic group B(Canton CaB and CaQ.Thus,a depth of 0.25 inches over the project's impervious area(2,878 sq.ft rooftop and driveway)will be used; (2,878 sq.ft)(0.25 inches)/(12 inches/foot)=60 cu.ft Check Available Inflow Volume from Rooftop Using the 2 year-24 hour runoff depth of 3.1 inches,and a CN value of 98 for rooftop, the depth of runoff equals 2.9 inches per SCS TR55 Figure 2-1. The available volume of runoff from a the proposed rooftop(1,612 sq.ft)equals; (1,612 sq.ft)(2.9 inches)/(12-incheslfoot)=389 cu.ft Check Dead Storage of Proposed System Use 20 Infiltrator high capacity chambers(or equivalent)placed in a 7 foot wide by 64.5 foot long trench filled with double washed crushed stone to a depth of 16 inches. Approximate stone void ratio as 0.33 of total; Total System Volume=(64.5 ft long)(7 ft wide)(16/12 ft high)=602 cu.ft Structure Volume=(20 units)(16.3 cu.ft)=326 cu.ft Stone Void Volume=(602 cu.ft-326 cu.ft)(0.33 Vv/Vt)=92 cu.ft Total Void Volume=326 cu.ft+92 cu.ft=418 cu.ft JOi!i A. !\ cvm lU No.39'367 :4 ►►Y Page 1 5. The elevation of the cellar floor in the proposed building is below the elevation of wetland areas on site. It is likely that groundwater will be encountered in the excavation for the cellar and will be a problem relative to infiltration of groundwater into the cellar. Typically, this would be controlled through the use of a sump pump. The regulations require that designs recharge runoff to the extent feasible, if a sump pump is used this would have the effect of pumping groundwater to a surface discharge point. We recommend that a test pit be excavated and observed by a certified soil evaluator to estimate the maximum seasonal high groundwater table. The proposed cellar floor elevation should be a minimum of one foot above this elevation. 6. The plans indicate a grass swale which would collect runoff along the easterly side of the building for discharge across the driveway to Dale Street. it also appears that a small depression on the easterly side of the proposed driveway, in the Dale Street layout would be created. We do not recommend creating a trap for water in:,`= layout of a public street. The proposed swale would discharge to an existing ditch along Dale Street. The regulations require that site runoff from impervious areas be recharged to the extent feasible. The proposed Swale does not address this requirement. Based on the report by Normandeau Associates, soils on the site should be suitable for on-site recharge. 7. It does not appear possible to grade to the limits shown on the plan along the westerly side of the driveway in the vicinity of the proposed 196 and existing 198 contours. We appreciate the opportunity to assist the Planning Board on this project and hope that this information is sufficient for your needs. If you have any questions please do not hesitate to contact us. Very truly yours, COLER& COLANTONIO,INC. John C C4�P.E. xc Merrimack Engineering Services 7-17g6 RRC) RnG 'nan 'Won ..lanoDUW Ua.AO 1 H7 T :SZn as-an- i nr, Town of North Andover NORTH OFFICE OF 3�O""'ED . 4, COMMUNITY DEVELOPMENT AND SERVICES ° : A o 146 Main Street Qg1TF �y KENNETH R.MAHONY North Andover,Massachusetts 01845 9SS4c"US�t Director (508) 688-9533 November 20, 1995 Mr. James Colantonio Coler & Colantonio 101 Accord Park Drive Suite One Norwell, MA 02061 Re: Lot 1 Dale Street Dear Mr. Colantonio, As per our discussion this afternoon I am sending you a copy of the application, plan, and watershed report concerning Lot 1 Dale Street. I have also enclosed a copy of the current Watershed Protection District Bylaw. As you will see from the application, there is a legal issue concerning the appropriate bylaw. The lot was created in 1985 therefore the applicant is asserting that the 1985 bylaw applies. We are asserting that the 1995 bylaw applies. I have sent this issue out to our town counsel for a resolution. Therefore, please hold off on the actual review of the project until this issue is resolved. However, I would like your opinion as to whether your firm is qualified to conduct this type of review. The current Bylaw requires: 1. Written certification from a registered professional engineer (or other person trained in hydrogeology) that the project not cause any significant degradation of the quality of quantity of water in or entering Lake Cochichewick. 2 . Proof that there is no reasonable alternative location outside the non-disturbance zone. 3 . Evidence that all on-site operations including but not limited to construction, wastewater disposal, fertilizer applications and septic systems will not create concentrations of Nitrogen BOARD OF APPEALS 688-9541 BUILDING 688-9545 CONSERVATION 688-9530 HEALTH 688-9540 PLANNING 688-9535 Julie Parrino D.Robert Nicetta Michael Howard Sandra Starr Kathleen Bradley Colwell in groundwater greater than the federal limit at the down- gradient property boundary. 4 . Projections of down-gradient concentrations of nitrogen, phosphorus and other relevant chemicals at property boundaries and other locations deemed pertinent by the Planning Board. Please let me know if your firm will be able to do this type of review. I will let you know when the legal issues have been resolved. If you have any questions please do not hesitate to call me at (508) 688-9535. Sincerely, Kathleen Bradley Colwell Town Planner COLANTQNIO�_ -- Ei`dhIF.11=Er�18 AriO '�. EfAi"nc":"g January 10, 1996 Planning Board c/o Ms. Kathleen Bradley Colwell Town Planner Town of Ni onli Andover 120 Main `street North Andover, ;V1A 01845 RE, Engineering Review Lot 1 Dale Street Proposal No. 1-516 Dear 1v1s, Colwell: Coler & C'olantonio, Inc. is pleased to provide vc)u with this proposal to pffr0 on engineering services associated with the above project, It is our uaderstandin., that we are to review the plans and calculations for the at}ove referenced single family house llot in the Town of North Andover. Specifically, Maur review would issues associated with the Special Permit tiling under the Watershed Protection District Bvlaw. The plans would also be reviewed for coni;orinance to standard engineering design practices. Included in this proposal is a Scope of Services ll outlines the Y omptliisicoi�trac:ttuax be � performed, a listing of Addittc5nal Services e w discussions of`schedule, Fee and Basis of Payment. t.tl SCOPE OF SERVICES 1.1 keview the plans and calculations for conformance with the requirements of the Watershed Protection District Bylaw as well as standard-engineering practice. 1,2 visit the property to observe existing conditions on the site. Prepare a letter report coi}inzenting un tlAe plans and calculations, 1 Q Accord Park Drive, Suite Ono 617-982.5400 Norweil, MA 02061.1685 Fax: 617-982 34r?o