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HomeMy WebLinkAbout07-18-1989 Drainage & Related Correspondence PRD OF NOn71fR OFFICES OF: o�` o 120 Main street APPEALS North Ar)daver BUILDING; ;,'°':`;;; -,yM Massachusetts o I 845 CONSERVikNON eSAOIO, DIVISION OF (50€3)(382-6483 HEALTH PLANNING PLANNING & COMMUNITY DEVELOPMENT KAREN H.P. NE -SON, 1 IRF-C i"OLD To: Planning ward s From: William Sousa, North Andover Conservation Commission Re : Rosemont Definitive Subdivision Plan March 22, 1989 Review of the subject plans indicate the proposed work will fall under the jurisdiction of the Wetlands Protection Act and the Town's Wetland Protection Bylaw and will require the filing of a Notice of Intent . Several proposed areas of work warrant particular comment at this point In the development process and need to be addressed. 1 ) The Site Drainage Analysis shows a detention pond <Pond #3) on the south side of Wild Rose Place In an existing wetland resource area . The NACC has found that the use of wetland resource areas for storm water detention is generally inconsistant with protecting the interests associated with the resource area and, therefore , requires such control devices be constructed in upland. 2) The plans show two crossings of the north/south wetland In the east side of the development with resultant filling of the resource area . To reduce the impact on the wetlands, the area of filling should be minimized by insuring a minimum crossing width , minimum fill height , and a crossing location at a point of minimum wetland width . The applicant should also consider combining the two crossings into one to serve as both emergency access and upland access. 3) There is proposed extensive grading and unit construction within the 100 foot buffer zone of the wetland resource area around Wild Rose Place , along the eastern most curve of Rosemont Drive , and north of Ridge Court . It has been the policy of the NACC to require a 25 foot " no disturbance" and a 50 foot " no structure" buffer in such projects to insure protection of the wetland resource areas. However , considering the extent and severity of the grading shown , It Is doubtful that the usual policy can insure the required protection . The proponent will need to provide additional measures to control erosion and prevent sedimentation of the resource area's both during and after construction . Additional buffer area , mechanical means, or reduced grading should be explored. 4) The Proposed Drainage Plan along Chestnut St . shows a termination at station 0+0 . The details of this terminus are not shown but It appears to discharge at Mosquito Brook . Since no detail Is shown , It Is difficult to assess the impact of this point discharge at the brook without further Information from the proponent . 5) Inspection shows that a portion of the site drains southerly towards Mill Road which has extensive wetland resource areas within Its drainage system. The Sedimentation and Erosion Control Plan does riot address control In this direction . 6) The sewer line wetland crossings will need to be Installed and tested as " forced mains" to preclude leakage Into the wetland resource areas. If you have any questions as to the concerns expressed, please feel free to contact me . wow.nl 8fTH DRAINAGN CONCMRNS A . In 100 year storm, the overflow at the low point (C . H . ' s at circle ) Ridge Court will not flow toward detention pond 01 , but will combine with such Lot 42 . 2 . Overland flow at low point of Ridge Road will partially flow toward Bldg #6 and will partially flow down Ridge Court. A swale between Bldg 05 and #6 to direct runoff toward Detention 41 8hall be incorporated . 3 , Refer to #1 above ! Overflow at end of Ridge Court will in all probability flood out Bldg . H . 4 . The CH value A 25 for subcat #2 , 4 & 5 is erroneous, or explain it use and origin . CN volunH have not separated field areas from woods undo:c Pro-devel . or separated lawns from field and woods under Post conditions . 5 . Does the ouLlet profile from Pond #1 consider the severe cut of Chestnut Street? 6 . The percent impervious of Subcat #G appears too low, Justity it ! 7 . No computationo were supplied concerning Pond #3, either inflow, outflow or reaches . 8 . Drainage plans are not clearly labeled. The calculation pages aro not numbered for reference or ease of readability. 9 . The overland flow at the low point of Rosemont Drive will be partially directed toward Bldg . #16 and the access road and I question it all of Subcat 44 reaches Pond 02 . 10 . Where is water supply for wetland replication area North of Access roadway? 11 . Project will need curbing on Houthside of Rosemont Drive from station 0 to at least 10+0 to insure runofk stays in roadway and iH not directed toward ahuttors on South. 12 . PonUing will occur in from of Bldg 02 , 2 , 15, 16 . Need regrading . 13 . Show flood elevation in the detention ponds for all storms . 14 . ProjeeU involves severe roadway cuts in many areas . Underdrains MY[ be inshalled on all uphill cut areas . Is . Corrvct watershed lin03 between nubcat 3 and 4 at intersection o:,': Ridge Road and Rosemont. 16 . Need utudy A timing of poakklows between subont 2 -3, 4 and 5 -6 to nscertain combined peak with predevnloped , What were the subcat watershed areas under Pro? Drainage computation appraouLly treated ki acres an one car l , Post development is 60 acres and in divided Mo 6 areaB. Should "Ludy times of travel and concentration under various ronLes for pro . Where is travel route studied? 17 . Piping at areas 8. 18 quickens the time of travel . Can runoff ever into proposed catch basins on Chestnut Street? C . B . in Ilow design is I , !; of, an slopes . In . No computations shown tor Tc on Post Devel . based upon CN . 19 . Need analysis of combined Post storm at design point. 2w. Need analysis of increased volume of runuit of dohnson Street, whiol) is a flood Plan Area. What to do with the extra 3 . 5 Acre-ft of volume at Johnson Street and Holly Ridge Bubdivision? 21 . Project needs mitigation for lower storm ( 2 , 10 & 50 ) . 22 . Drainage Computations shall be an Type III storm for this area . 23 . No workshants for travel time and TU were submitted . Are you usinq TRSS dated June 19867 TC is based upon CN . 24 . What is CN value for Tennis Court? 25 , Drainage computations lead to believe there is no development of ' A ' SOU but You are developing ' A' noil in Subcat 04 and 05, therefore cannot have the same area ( 12 . 86 acres ) under the erroneous an of 25 . 26 , T believe design point should be at Johnson Street. 27 . What discharge formula are you using for detention pond outlets? 29 . Has DPW approved the design of water pump station on Chestnut Street? In waLermain being looped to Holly Ridge? Plans do not show connection . Has Fire Department approved the quantity and preBsure at top of hill'? 29 . Project need much more detention and drainage study. ROSEMONT P&ANNTNG CONCNRN,a 1— wotland8 Presorvation report ortablishor a monitoring and maintenanco program on Pg . 6 . 1 strongly suggest that Wqjlqqqq I-n.c.. be responsible for construction monitoring in lieu of Lhe "applicant'' with weekly reports being sent Lo Planning and Conservation thyaughoul, construction . 2 . Is Fire DeparLment satisfied with accems and water supply? :1. ' question the emergency acce8s . An in a subdivision , this is a long dead end raodway with all residents depending upon entrance ni-, Chestnut Street with an 8% grade up Rosemont Drive , A secondary should he opened to Holly Ridge . 4 .WA What in DPW ' s position on sewer routing? Will it require an additional P11mP station? No plans have been submitted to show tie to existing sewer. Detailed architectural and landscaping plans qbqjY,"e submitted to show enLrance at Chestnut Street . When questioned at the public hearing, plans were vague an type of wall . Provide photographs or other details an walls . 6 . Vlans show edge of proposed "woods to remain" line . is =8 line to canopy cover or trunk line? It canoVy line , then drainage computations should reflect an additional 20 ft. strip of lawn to exist to the trunk line and reflect such in their CN values , I . A new For. ' A ' plan shall be submitted showing entire site as one lot. B . North arrow B do not appear on site and utility plans . 9 . No hunch mark in shown an plans:. . 10 . Has DPW approved drainage and sewer profiles? Profiles show very steep grades on most pipes . What are velocitieNy Has Scouring velocity been exceeded? Sewer and drainage velocities do exceed acceptable standards . 11 . Wotland is being damed at access )-:a.a�odwoy. Will this cause rerouted of wetlands along driveway to Holly Ridge? Is better tan a peak flow of 25 CA expected to VqqR through crushed stone fill . Over topping will crude sLone Vill . 12 . No building permits shall be issued until utilities and roadway have been completed and all disturbed areas erosion controlled for each phase . Developer shall not start next phase of project until prior phase ham been completed to the satisfaction of Planning and COnservation. ( This needs rewordinq I suggest discussion with developer to arrive at an acceptable condiLion for all parties ) ( Hut. knep the intent) . Form 5 [jEpE file Na. 242-503 r \` (to bo provided by DEQE) 3 North Andover, MA , Commonwealth cityriown of Massachusetts , Parthenon Dev. Corp. , Apptltant ti•'J?' RO S EMONT Order of Conditions Massachusetts Wetlands protection Act G.L. c. 131 , §40 , and under the Town of North Andover's Town Bylaw, Chapter 3.5 From NORTH ANDOVER CONSERVATION COMMISSION Parthenon Development Corporation To , - Same (Name of Applicant) (Name of property owner) Suite 241: 853 Turnpike Street- Same Address North Andover MA 01845 Address This Order Is Issued and delivered as follows: B"' by hand delivery to applicant or,representative on (date) 0 by certified mail, return receipt requested on (date) This project is located at Chestnut Street to Clay Pit Hill The property is recorded at the Registry of Northern Essex Book_ 2693 - -__ age 20 Certificate (if registered) The Notice of Intent for this project was Illed on May 24, 1989 (date) The public fearing was closed on June 21, 1989 (date) Findings The NORTH ANDOVER CONSERVATION COMMISSION _-leas reviewed the above•refe►enced Notice of Intent and plans and has held a public hearing on the project. Based on the Information available to the NACG at this time, the NACC has determined that the area on which the proposed work is to be done Is significant to the following interests in accordance with the Presumptions of Significance set forth in the regulations and precedent and practice under this _Town's Bylaw for each area subject to protection under the Act and Bylaw: Ik[ Public water supply 51"' Flood control ❑ /Land containing shellfish Private water supply UK storm darnage prevention j Fisheries Ground water supply Cd' Prevention of pollution Protection of wildlife habitat 5•t r~frof-flan 11 /1 /R7 a - , t � 1 #242-503 ROSEMONT 2 Therefore, the North Andover Conservation Commission hereby finds that the following conditions are necessary, in accordance with the Performance Standards set forth in the State Regulations and the requirements of the Town ByLaw, to protect those interests checked above. The North Andover Conservation Commission (hereafter the "NACC") orders that all work shall be performed in accordance with said conditions and with the Notice of Intent referenced above. To the extent that the following conditions modify or differ from the plans, specifications or other proposals submitted with the Notice of Intent, the conditions shall control. GENERAL CONDITIONS 1.. Failure to comply with all conditions stated herein, and with all related statutes and other regulatory measures, shall be deemed cause to revoke or modify this Order. 2 . This Order does not grant any property rights or any exclusive privileges; it does not authorize any injury to private property or invasion of private rights. 3 . This Order does not relieve the permittee or any other person of the necessity of complying with all other applicable federal , state or local statutes, ordinances, by-laws or regulations. 4 . The work authorized hereunder shall be completed within three years from the date of this order unless either of the following apply; (a) the work is a maintenance dredging project as provided for in the Act and/or the Town ByLaw; (b) the time for completion has been extended to a specified date more than three years, but less than five years, from the date of issuance and both that date and the special circumstances warranting the extended time period are set forth in this Order. 5. This order may be extended by the issuing authority for one or more periods of up to three years each upon application to the issuing authority at least 30 days prior to the expiration date of the Order. 6. Any fill used in connection with this project shall be clean fill, containing no trash, refuse rubbish or debris, including but not limited to lumber, bricks, plaster, wire, lath, paper, cardboard, pipe, tires, ashes, refrigerators, motor vehicles or parts of any of the foregoing. 7 . No work shall be undertaken until all administrative appeal t #242-503 ROSEMONT 3 periods from this Order have elapsed or, if such an appeal has been filed, until all proceedings before the Department have been completed. 8 . No work shall be undertaken until the Final Order has been recorded in the Registry of Deeds or the Land Court for the district in which the land is located, within the chain of title of the affected property. In the case of recorded land, the Final Order shall also be noted in the Registry' s Grantor Index under the name of the owner of the land upon which the proposed work is to be done. In the case of registered Land, the Final order shall also be noted on the Land Court Certificate of Title of the owner of the land upon which the proposed work is to be done. The recording information shall be submitted to the North Andover Conservation Commission on the form at the end of this Order prior to commencement of the work. 9 . A sign shall be displayed at the site not less than two square feet or more than three square feet in size bearing the words, "Massachusetts Department of Environmental Quality Engineering File Number 242-503" . 10 . Where the Department of Environmental Quality Engineering is requested to make a determination and to issue a Superseding order, the Conservation Commission shall be a party to all agency proceedings and hearings before the Department. 11. Upon completion of the work described herein, the applicant shall request in writing that a Certificate of Compliance be issued stating that the work has been satisfactorily completed. 12 . The work shall conform to the following plans and additional conditions: a. Notice of Intent submitted by Parthenon Development Corp. prepared by Wetlands Preservation Inc. , 5/24/89 . b. Plan entitled "Rosemont, North Andover, MA, Definitive Site Plan Submission, dated February 28 , 1989 revised May 11, 1989 , Sheets Ll through L21 and L23 through L27 . c. Revised Table 2 , 2A, 3 , 3A of Section G. Wetland Replication Plan of the Notice of Intent, dated March 3 , 1989 , prepared by Wetland Preservation Inc. , 5 sheets. d. Summary of Flooding at Wild Rose Place, dated June 20, 1989 , prepared by Andover Consultants Inc. , 4 sheets. e. Drainage Computations, Mill Road Watershed, dated June 22 , 1989, prepared by Andover Consultants Inc. , 10 sheets. f. Environmental Notification Form, submitted by Parthenon 4242--503 ROSEMONT 4 Development Group Inc. , dated March 13m 1989 , 12 sheets. g. Memo from William Sousa, NACC to NA Planning Board, March 22 , 1989 , 2 sheets. h. Site Drainage Analysis, "Rosemont" , North Andover MA, prepared by Andover Consultants, Inc. , February 28, 1989 . 13 . The following wetland resource area is affected by the proposed work: bank, land under water, land subject to flooding and bordering vegetated wetland. These resource areas are significant to the interests of the Act and Town Bylaw as noted above. These resource areas are also significant to the recreation interests of the Bylaw. The applicant has not attempted to overcome the presumption of significance of these resource areas to the identified interests. 14 . The NACC agrees with the applicant' s delineation of the bordering vegetated wetland resource areas on the site. 14a.That portion of the Emergency access Lane which connects off site to Deerfield Lane (Holly Ridge) is subject to the OOC issued under file #242-348 . PERFORMANCE DESIGN STANDARDS CHANGES : 15 . The NACC finds that the intensive use of the upland areas and buffer zone proposed on this site will cause further alteration of the wetland resource areas during the construction activities, particularly the individual house construction. In order to prevent any alteration of wetland resource areas beyond those proposed in the Notice of Intent and approved herein, a twenty- five (25) foot no-cut zone and a fifty (50) foot no-construction zone shall be established from the edge of the bordering wetland resource areas. The grading and unit configuration at Unit 3 on Ridge Court shall be revised to meet this Condition and be submitted to the NACC for approval prior to the start of any construction on the site. Exempted from the fifty foot no- construction Condition is the retaining wall on the Eastern side of Rosemont Drive. 16. The NACC finds that the proposed rip-rap emergency spillways at the tennis court detention area and at Detention Pond #2 at the North end of the site do not provide adequate long term control and therefore requires that the emergency spillway control structures be constructed of concrete, details thereof to be submitted to the NACC for review and approval prior to construction. The elevation of the spillways shall be such as to provide detention in conformance with the 100-year storm as defined in 310 CMR 10. 57 (2) (a) 3 . i #242-503 ROSEMONT 5 17 . The inverts of all detention pond outlet pipes shall be set so as to provide complete draining of the ponds and the bottoms of the ponding areas shall be contoured so as to prevent localized ponding and retention of storm water. 18. The applicant has not shown the details of the discharge of the 18 inch drain pipe from Chestnut St. , where it enters Mosquito Brook. Prior to the start of construction the applicant shall submit to the NACC for review and approval the details of this discharge and what measures shall be taken to insure no alteration of the wetland resource areas associated with Mosquito Brook will occur. 19. No earthen embankment in the buffer zone shall have a slope steeper than 2 : 1. Any slopes of steeper grade shall be rip- rapped to provide permanent stabilization. All slopes on the inside of the proposed detention basin shall be no steeper than 20. The sewer lane where it crosses wetland resource areas shall be installed as a force main with glued joints and shall be pressure tested to 100 psi in accordance with the requirements of the North Andover Public Works Department. 21. All effluent catch basins shall have sumps and contain oil/gasoline traps . All drainage facilities shall be kept properly maintained and operative at all times. Included in the maintenance procedure shall be the periodic clean out of all catch basin sumps. They shall be free of accumulated silt and debris before a Certificate of Compliance is issued and the owner or his agent shall so specify on his request for a Certificate of Compliance. All catch basins shall be inspected at least on an annual basis and shall be cleaned when the amount of silt and debris exceeds twelve (12) inches in depth within the sump. The owner shall submit, on an annual basis to the NACC, a certification that states inspection and cleaning, if required, has been performed. 22 . The NACC finds the applicant' s proposal for wetland replacement areas to be adequate. The replication area at the emergency access lane shall be constructed prior to other construction activity on site. The replication area at Wild Rose Place shall be constructed prior to buildings 10 & 11 in Phase 3 . This sequence shall be reflected in the Construction Schedule required below. 23 . Prior to the start of construction, a detailed Construction Sequence Schedule including all elements of the Erosion Control Plan shall be submitted to the NACC for review and approval . 24 . No further Notices of Intent or Requests for Determination shall be required of this project if it conforms to the r ##242-503 ROSEMONT 6 requirements of this Order of Conditions. Any changes shall be handled as specified in condition ##25 below. 25. Any changes in the submitted plans, Notice of Intent, or resulting from the aforementioned Conditions must be submitted to the NACC for approval prior to implementation. . If the NACC finds, by majority vote, said changes to be significant and/or to deviate from the original plans, Notice of Intent, or this Order of Conditions to such an extent that the interests of the Act and Bylaw cannot be protected by this Order of Conditions and would best be served by the issuance of additional conditions, then the NACC will call for another public hearing within 21 days of the close of said public hearing, the NACC will issue an amended or new Order of Conditions. 26. Any errors found in the plans or information submitted by the applicant shall be considered as changes, and procedures outlined above in Condition ##25 for changes shall be followed. 27 . The proposed project is still under review by the North Andover Planning Board, and may further be reviewed by other Town or State Boards, or Agencies. This may result in changes to the proposed project which may in turn involve changes to the project plans or wetland impacts. Consequently, in order to protect the wetland interests, a final set of plans and a letter from the professional engineer who prepared these plans shall be submitted to the NACC for review and approval prior to start of construction. Said letter shall describe any and all changes or differences between the final plans and those reviewed and cited above by the NACC. These plans and letter shall address all items identified and requested by Conditions ##15 through 23 above. No work shall begin on this project until written approval has been given by the NACC. All changes shall be considered as specified in Condition W25 above. 28 . Fertilizers utilized for landscaping and lawn care shall be of the low-nitrogen content variety and shall be used in moderation. Pesticides and herbicides shall not be used within 100 feet of a wetland resource area. PRIOR TOf DURING CONSTRUCTION 29 . In advance of any work on this project the applicant shall notify the NACC, and at the request of the NACC shall arrange an on--site conference among the NACC, the contractor, and the applicant to ensure that all of the Conditions of this Order of Conditions are understood. This order of Conditions shall also be made a part of the contractor's written contract. 30. The applicant, or its successors, shall notify the NACC in writing of the identity of the on-site construction supervisor y #242-503 ROSEMONT 7 hired to coordinate construction during the work on the site and to ensure compliance with this Order of Conditions. 31. Commencing with the issuance of this order of Conditions, and continuing through the existence of the same, the applicant shall submit to the NACC a written progress report every three (3) months detailing what work has been done in or near resource areas, and what work is anticipated to be done over the next period. This report shall serve to update the Construction Sequence Schedule cited in Condition #23 above. 32 . Wetland flagging shall be checked prior to the start of construction and shall be re-established where missing so that required erosion control measures between construction activity and wetland resource areas can be properly placed. 33 . All construction work shall conform to the Construction Sequence Schedule and Erosion Control Plan noted above in Condition #21 above. 34 . Prior to any activity on the site, erosion control barriers as specified in Section H of the Notice of Intent (Item 12a) or at a minimum a filter fabric fence backed by a single row of staked hay bales shall be placed between all construction areas and wetland resource areas. These barriers shall be inspected and approved by the NACC prior to the start of construction. 35. The applicant shall have on hand at the start of any soil disturbance, removal, or stock piling, a minimum of two-hundred (200) hay bales and sufficient stakes for staking these bales. Said bales shall be used only for the control of emergency erosion control problems, and shall not be used for the normal control of erosion, as described in the Erosion Control Plan submitted with the Notice of Intent or the hay bale barrier described in Condition #34 above. 36. Upon completion of construction and grading, all disturbed areas located outside resource areas shall be stabilized permanently against erosion. This shall be done either by sodding, or by foaming, seeding, and mulching according to Soil Conservation Service standards. If the latter course is chosen, stabilization will be considered once complete vegetative cover has been achieved. 37 . No exposed area shall remain unfinished for more than thirty (30) days, unless approved by the NACC or its agent. 38 . After proper grading, all disturbed areas located within a resource area which will not remain as wetland areas, shall be loamed and seeded with not less than four (4) inches of good quality loam. Before seeding, ground limestone shall be applied at a rate sufficient to bring the soil test to pH 6. 5 . In rF I #242-503 ROSEMONT 8 addition, 10-6-4 fertilizer, or its equivalent, shall be applied at a rate of fifteen (15) pounds per one-thousand square feet, in accordance with Soil Conservation Service guidelines. All disturbed areas located within wetland resource areas which are to be only temporarily disturbed during construction, shall be restored to their original grade using as topsoil the original wetland soil , soil removed from other permanently filled wetlands, or at least four (4) inches of good quality loam, and then seeded or planted with compatible wetland species and mulched with hay. 39. All erosion prevention and sedimentation protection measures found necessary during construction by the NACC shall be implemented at the direction of the NACC. 40. There shall be no stockpiling of soil or other materials within twenty-five (25) feet of any wetland resource area. 41. During and after work on this project, there shall be no discharge or spillage of fuel, oil , or other pollutants into any wetland resource area. If during any phase of site preparation, construction or cleanup, there is a spill or discharge of any fuel , oil or other pollutant, the NACC shall be notified by the applicant as soon as practical . No vehicles are to be stored within one-hundred (100) feet of wetland resource areas and no vehicle refueling, equipment lubrication, or maintenance is to be done within one-hundred (100) feet of a wetland resource area. 42 . Washings from concrete trucks or surplus concrete shall not be directed to or dumped in any drainage system or wetland resource area. 43 . All waste generated by or associated with the construction activity shall be contained within the construction area and away from any wetland resource area. There shall be no burying of spent construction materials on site, nor shall any waste be disposed of on the site by any other means. The applicant shall maintain dumpsters at the site for the storage and removal off site of such spent construction materials. 44 . Members of the NACC or its Agent shall have the right to enter upon and inspect the premises to evaluate compliance with this Order of Conditions and to effect compliance with this Order of Conditions. The NACC reserves the right to require, following field inspection, additional information or resource protection measures. 45 . Accepted engineering and construction standards and procedures shall be followed in the completion of this project. #242-503 ROSEMONT 9 OTHER CONDITIONS: 46. The provisions of this Order of Conditions shall apply to be and binding upon the applicant, its employees, and all successors and assigns in interest or control . 47 . Issuance of the Conditions does not in any way imply or certify that the site or downstream areas will not be subject to flooding, storm damage, or any other form of damage due to wetness. 48 . A proper bond or deposit of money or negotiable securities running to the Town of North Andover shall be provided in the amount of $25, 000. 00 which shall be in all respects satisfactory to Town Counsel , Town Treasurer, and the NACC, and shall be posted with the Treasurer of the Town of North Andover before commencement of work. Said bond or deposit of money shall be conditioned on the completion of all Conditions hereof, signed by a party or parties satisfactory to the NACC, and Town Counsel, and shall be released after of the project, provided that provision, satisfactory to the NACC, has been made for performance of any Conditions which are of a continuing nature. The applicant may propose a bond release schedule keyed to completion of specific portions of the project for the NACC' s review and approval . This Conditions is issued under the authority of the Town of North Andover's Wetlands Protection Bylaw. 49 . In addition to the requirements of Conditions #11, the applicant shall submit a Letter to the NACC from a registered professional civil engineer certifying compliance with this Order of Conditions. Said letter will certify, but not be limited to the following: a) "As-Built" elevations of all drainage ways constructed within 100 feet of any wetland resource area. b) "As-Built" elevations and grades of all filled or altered wetland resource areas. c) Distances to all structures and alterations within 100 feet of any wetland resource areas. A stamped "As-Built" topographic plan prepared by a registered professional engineer of all areas within the jurisdiction of the Wetlands Protection Act and Bylaw shall be submitted when a Certificate of Compliance is requested. 50. Special Conditions #21, 28 and 41 shall survive the issuance of a Certificate of Compliance for this project. ROSEMONT DEQE #242-503 i Issued ey. North Andover Collservollon Commission Slgnatur • s) This Order must bo signed by a maJority of the Conservation Cominlssion, On this 5th day of July _ 19' $__9 , before me personally appeared- person Paul L. Tariot , to me known to be the person described In pad who executed the foregoing Instrument and acknowledged tlIgl lie/she executed tS ms me as hl /her f e nd deed. ' September 9, 1994 Notary Public My cornlnlssloll expires The applicant,the owner,any peraon aggrlevod by this Order,any owner of land nbulling ilia land upon which Ilia proposed work Is to be done w any Ion residents of the city or town In which such land Is localed era horoby nolllied of lhelr rltlhl to roquest Ure Dapartmenl of EnNlronmenlal Quality Engtneoting to Issue a Superseding Order,providing Iho request Is made by codified email or ltiand delivery Id' Ilia Department within lan days from the date of Issuance of this Order.A copy of ilia Iequost shall at tlic sumo lime be sent by certified mall or hand delivery to the Conservation Commission and the applicant. If you wish to appeal this decision under the Town By Law, a complaint must be .filed in -Superior Court. [Mach on defied ihir and submit to the NACC prior to commencement of work, ' MHM..............N...11.a.1.N...............HN..............................r...............i.........I....... ...............................................................................— Issuing Ault,oriiy to Cla PAP Hit] R (pleas*be advised that ilia Order of Conditions for the project a Chestnut 5t, and File Number 242-503 three been recorded at Ifte Heplatry of has been noted In Ilia chain of lille of the effected properly In accordance whh Goneral Condillon a on If recorded tend, the Instrument number which Identifles tuts Iranaaction In tI reglatemd rand, the document number which Identifies phis transaction to _Applicant. Stgndture 301 CMR: LCuTrvE OFFICE OF ENVIRONMENTAL Al ;IRS 11.28: Environrnental Notification Forth ENVIRONMENTAL NOTIFICATION FOAM I. SUMMARY ' A. Project Identification 1. Project Name Rosemont AddressiLocation City/Town North Andover _ 2. Project Proponent Parthenon D xrpl a men.r Address 853 T€€rnnike Strei-t_ 5ttItaiAL-, 3. Est.Commencement Tunp_ 1989 .Est.Completion e Approx.Costs 9.5 mi i 1 i QStatus of Project Design 8 1; %Complete. 4.Amount(if any)of bordering vegetated wetlands,salt marsh,or tidelands to be dredged, filled removed,or altered(other than by receipt of runoff)as a result of the project. acres 2,400 square feet. 5:This project is categorically included and therefore requires preparation of an EIR. Yes No ? B. Narrative Project Description Describe project and site. The proposed project is the construction of 44 residential single family attached townhouses in 17 buildings clustered on a 45.8 acre site in North Andover. Located on Claypit Hill, the project site .is bounded on the west by Chestnut Street and, by undeveloped woodlands on the north, east and south. Vegetative cover on the undeveloped parcel consists of meadow and woodland. There are. two 'wetland areas, both Funning in a south-north direction, one on the east and one on the west portion of the site. The project will entail the filling of + 2,400 s.f. , of the eastern wetland for two roadway crossings. In'addition, Mosquito Brook runs through the northern portion of the site in a West-East direction. The project is serviced by mdnic- ipal water and sewer. Primary vehicular access will be provided from Chestnut Street with emergency access from Holly Ridge Road to the northeast. Capies of the complete ENV may be obtained from(proponent or agent): Name: a Firm/Agency: ' Address: 04Pleasant Street —Phone No. Watertown, MA 02172 1986 THIS I5 AN IMPORTANT NOTICE.COMMENT PERIOD IS LIMITED, For Information,call(617)727.5830 301 CM11 - 101 1/9/117 11.23: continued . P.2 C. List the State or Federal agencies from which permits or other actions have been/will besought: Agency Name Permit Date flied;file no. DEQE, DWPC Sewer Extension & Connection Not yet filed D. Llst any government agencies or programs from which the proponent will seek financial assistance for this project: Agency Name Funding Amount NONE E Areas of potential impact(complete Sections If and lit first,before completing this sections. 1. Check all areas in which,in the proponents judgment,an impact of this project may occur.Positive impacts,as,weii as adverse impacts,may be indicated. Construction Long Term Impacts Impacts Inland Wetlands................................... X ___ X Coastal WedandsiBeaches........................ Tidelands.......................................... Traffic.............................................. Open Space/Recreation........................... HistoricaUArchaeological......................... Fisheries/Wildlife.................................. VegetationtTrees.................................. Agricultural Lands................................. Water Pollution.................................... Water Supply/Use................................. Solid Waste. .. ................................... Hazardous Materials.............................. Air Pollution....................................... Noise............................................... Wind/Shadow...................................... Aesthetics......................................... Growth impacts................................... Community/Housing and the Built Environment. �— Other(Specify) Setrer 2. fast the aiternadves which have been considered. None 3111 CIMR: E.' UTIVE OFFICE OF ENVIRONMENTAL AF ;1S 11.23: continued P.3 F. Has this project been filed with EOEA before?No X Yes EOEA No. G. WETLANDS AND WATERWAYS 1. Will an Order of Conditions under the Wetlands Protection Act(c.131s.40)or a License under the Waterways Act(c.91)be required? Yes X No 2. Has a local Order of Conditions been: a,issued?Date of Issuance ;DEQE File No. b.appealed?Yes ;No 3. Will a variance from the Wetlands or Waterways Regulations be required? Yes ; No 11. PROJECT DESCRIPTION A. Map; site plan.Include an original 8% x 11 inch or larger section of the most recent U.S.G.S. 7.5 minute series scale topographic map with the project area location and boundaries clearly shown.If available,attach a site plan of the proposed project. B. State total area of project:_ 4 5.8 acres. Estimate the number of acres(to the nearest 1/10 acre)directly affected that are currently: 1.Developed .............. --1 _acres 6.Tidelands ................ .._-0—acres 2.Open Spacei 7.Productive Resources Wood landsfRecreation 27.1 acres Agriculture ............. .—.-acres 3.Wetlands ............... . acres forestry ................ --a._acres 4.Floodpiain .............. --a—acres 8.Other ..................... _4_acres 5.Coastal Area .......... 0_acres C. Provide the following dimensions.if applicable: Existing Increase Total Length in miles ......................................... NA CIA � NEB Number of Housing Units ............................. O 44 44 Number of Stories ..................................... 1-9 1--9. Gross Floor Area in square feet........................ Number of parking spaces ............................. �— 10 179 �L 9 Total of Daily vehicle trips to and from site (Total Trip Ends) .. . ......................... 0_ 7R 258 Estimated Average Daily Traffic on road(s) serving site .... .. .. 2. Rte 11[ 11, 000- �2 3, Rte 1.1 45() 199 North Andover Bypass D. TRAFFIC PLAN. If the proposed project will require anv permit for access to local roads or state highways,attach a sketch showinq the location and lavout of the proposed driveway(s). See Site Locus Map and Site Plan t!'1�f37 3t)l C`AR - 103 11,28: continued PA lil. ASSESSMENT OF POTENTIAL ADVERSE ENVIRONMENTAL IMPACTS Instructions: Explain direct and indirect adverse impacts. including those arising from general construction and operations.-For every answer explain why significant adverse impact is considered likely or unlikely to result.Positive impact may also be listed and explained. Also, state the source of information or other basis for the answers supplied. Such environmental Information should be acquired at least in part by field inspection. A. Open Space and Recreation 1.Might the project affect the condition,use„oY access to any open space and/or recreation area? Erplana'don and Source: No. The project site is private property and not available for public use. 2.Is the project site within 500 feet of any public open space,recreation,or conservation land? Explanation and Source: No. The nearest public open space,recreation or conservation land is Harold Parker State Forest, which is approximately one mile from the site. S. Historic and Archaeological Resources e 1. Might any site or structure of historic significance be affected by the project? (Prior consultation with Massachusetts Historical Commission is advised.) Explanation and Source: There are no structures on the site. The Massachusetts Historical Commission has been contacted regarding the historical significance of the site. 2. Might any archaeological site be affected by the project? (Prior consultation with Massachusetts Historical Commission is advised.) Explanation and Source: No archaeological resources are known to e-xist at -this site. The Massachusetts Historical Commission has been contacted regarding the archaeological significance of the site. C. Ecotogicai Effects 1.Might the project significantly affect fisheries or wildlife,especially any rare or endangered species?(Prior:onsultatian with the Massachusetts Natural Heritage Program is advised). Explanation andSonrce: No. The site is not known to be utilized by any rare or endangered species. The Massachusetts Natural Heritage Program has been contacted. t/'3/117 301 CMR - L04 301 C.MR. F J UTIVE OFFICE.OF ENVIRONMENTAL AF:�. )IS 11.28: continued P.5 2.Might the project significantly affect vegetation, especially any rare or endangered species of plant?(Prior consultation with the Massachusetts Natural Heritage Program is advised.) (Estimate approximate number of mature trees to be removed; -Less--than I Explanation and Source: ' Full development will result in the replacement of some meadow-- land and woodland with landscaping vegetation and impervious surfaces. The Massachusetts Natural Heritage Program has been contacted. 3.Agrir_:-;;.sra1 Land.Has any portion of the site been in agricultural use within the last 15 years? If yes,specify use and acreage. Explanat ion and Source: No. The site is not known to have been used .agriculturally within the past 15 years. D. Water Quality and Quantity 1.Might the project result in significant changes in drainage patterns? Explanation and Source: No. All site runoff will be directed into a closed drainage system with oil and grease traps and d0 ention facilities prior to discharge into Mosquito Brook. Post--construction dis- charge levels will be -consistdsmt with existing site drainage. 2.Might the project result in the introduction of any pollutants,including sediments,into marine waters,surface fresh waters or ground water? Explanation and Source: No, Sediments disturbed during construction in upland areas will-be controlled by a soil erosion and sediment control program. Runofl from parking areas and roadways will flow through oil and grease traps and detention basins prior to dis- charge. 3. Does the project involve any dredging? No X Yes Volume . If 10,000 cy or more,attach completed Standard Application Form for Water Quality Certification, Part 1014 CMR 9.02(3),9,90,DEQE Division of Water Pollution Control). 119187 1o1 CIMR - 1o5 ii.28: continued P.6 4. Will any part of the project be located in flowed or filled tidelands,Great Ponds,or other waterways?(Prior consultation with the DEQE and C?a41 is advised.) Explanation and Source: No- The project is not in an area subject to Chapter 91 licensing. S.Will the project generate or convey sanitary sewage? No Yes X. If Yes,Quantity:_13,420 gallons per day Disposal by: (a)Onsite septic systems .......................... Yes No_ X (b) Public sewerage-systems (location, average and peak daily flows to treatment works) .................................. Yes X-_Na Explanation and Source: The sewage will be discharged to a nearby line which is routed to the Greater Lawrence Sanitary District facility on the Merrimack River. Treatment .plant average daily flow is 30 MGD; peak is 35 MGD; the design peak is 40 MGD. Source: Lawrence 6. Might the project result in an increase in paved or impervious surface over a sole source Sanitary Dist. aquifer or an aquifer recognized as an important present or future source of water supply? Explanation and Source: ' No. The Town of North Andover draws its water supply from Lake Cochichewick. Source: North Andover DPW 7.1s the project in the watershed of any surface water body used as a drinking water supply? Explanation and Source: Yes. The site drains to Mosquito Brook which is part of the Ipswich River. Basin. The Ipswich River is a source of ground water supply to downstream wells. Source: North Andover DPW 8.Are there any public or private drinking water wells within a I/2•mile radius of the proposed project? Explanation and Source: Yes. A few homes (less than 8) over a quarter mile from the site use private wells. The Town of North Andover draws its supply from Lake Cochichewick. Source: North Andover DPW. 301 C:.t R - 106 1/9/7i; 301 CZAR: a JLMVE OFFICE OF &NVIR©NMENTAL AFF. ;S 11.28, continued P.7 9.Does the operation of the project result in any increased consumption of water? Approximate consumptions J,4, 7_62—gallons per day.likely water source(s)T a N�,or th Explanation and Source: Water consumption is assumed to be 110% of Title V sewage generation. E. Solid Waste and Hazardous Materials 1. Estimate types and approximate amounts of waste materials generated, e.g., industrial, domestic, hospital,sewage sludge,construction debris from demolished structures. How/ where will such waste be disposea of? Explanation and Source: Approximately 440 lbs/day of domestic solid waste may be generated by the project (Attachment 1) . Removal of waste will be by private contractor. Source: J.A. Salvato 1982. 2.Might the project involve the generation, use, transportation,storage,release,or disposal of potentially hazardous materials? Explanation and Source: No. The proposed project is limited- to residential uses., which do not typically involve the generation, use, transportation, storage, release or disposal of potentially hazardous materials (other than household products) . 3.Has the site previously been used for the use,generation.transportation,storage,release, or disposal of potentially hazardous materials? Explanation and Source: It is not known at this time whether the site previously has been used for such purposes. F. Energy Use and Air Quality 1.Will space heating be provided for the project? [f so,describe the type,energy source,and approximate energy consumption. Explanation and Source: Yes. However, modern energy-conserving construction techniques will minimize energy- consumption: L07 t/1,}/117 i 11._8: continued 2.Will the project require process heat or steam?If so.describe the proposed system,the fuel type,and approximate fuel usage, ExplanationandSo"" NO. The project is a residential use. 3. Does the project include industrial processes that will release air contaminants to the atmosphere?If so,describe the process(type,material released,and quantity released). Explanation and Source: NO. The project is a residential use. 4.Are there any other sources of air contamination associated with the project(e.g.automobile traffic,aircraft traffic,valatiie organic compound storage,construction dust)? Explanation and Source: Yes. Earth disturbances during construction will result in some wind--blown dust. This will be controlled by periodic ground wetting. Project-generated traffic will result in some increase in traffic on local streets. However, the volume of traffic generated by the project will not result in significant adverse air quality. 5.Are there any sensitive receptors(e.g.hospitals.schools,residential areasi which would be affected by air contamination caused by the project? Explanation and Source: Yes. Sensitive receptors include nearby residential neighborhoods. However, the construction and use of the project will not result in adverse air quality at sensitive receptors. G. Noise I.Might the project result in the generation of noise? (Include any source of noise during construction,or operation, e.g., engine exhaust, pile driving, traffic.) Explanation and Source: Yes. The construction of the project will result in increases of noise over ambient levels due to normal construction activity. These disturbances will be of short duration and confined to normal working hours. The additional traffic generated by the project is not expected to significantly affect ambient noise conditions. iI'iItI7 301 C MR - 108 301 CMRc AXE! DIVE OFFICE OFTIMONMENTAL AFFA[r 11,28: continued P.9 2.Are there any sensitive receptors(e.g.,hospitals,schools,residential areas)which would be affected by any noise caused by the project? Explanation and Source: Yes. Residential areas located on Chestnut Street, Route 114, ' Mill Road, Rea Street and Johnson Street will be exposed to slightly higher noise levels during construction activities. 3.Is the project a sensitive receptor,sited in an area of significant ambient noise? Explanation and Source: No. The project is a sensitive receptor. However, it •is not located in an area of significant ambient noise. H. Wind and Shadow 1.Might the project cause wind and shadow impacts on adjacent properties? Explanation and Source: .No. No wind or shadow; impacts on adjacent properties are ,. anticipated since the proposed structures will not exceed 2 stories. I. Aesthetics I. Are there any proposed structures which might be considered incompatible with existing adjacent structures in the vicinity in terms of size, physical proportion and scale, or significant differences in land use? Explanation and Source: No. The proposed residential development will be designed to be compatible with existing residential uses adjacent to the project. Although the project will result in development of an undeveloped site, 40% of the site will remain unaltered. , 2.Nignr the prolt:cronpair visual access to waterfront or other scenic areas? Explanation and Source: No. The site is not in a waterfront area. 301 CMR - 109 1/9/i37 Jul 4�fox" -r..1r t U i l V G VC r ILIA ur 6iv Y 1"4Jt'.fn1•.4V 44,iL.nr L'tAAAa ',. 1 11.28: continued P.10 IV, CONSISTENCY WITH PRESENT PLANNING Discuss consistency with current federal,state and local land use, transportation,open space, recreation and environmental plans and policies. Consult with local or regional planning authorities where appropriate. The project is designed -to be consistent with federal, state and local plans and policies. The project is located in an R-2 Zone and will require a special permit as a Planned Residential pevelop- ment(PRD) . As proposed, the development is consistent with the intent: oi_ the PRD By-law and is in technical compliance with its terms. V. FINDINGS AND CERTIFICATION A. The public notice of environmental review has been/will be published in the following newspaper(s): (NAME)_Nnrth Anrinvar (Date) March 9, 1989 Citizen ,1,nwrenre, Eagle March 8, 1989. Tribune R. This form has been circulated to all agencies and persons as required by 301 C.MR 11.24. Date Si fora f Respo sib Officer 6ad Signat re of person preparing or P oie roponent ENF(if different from above) Eugege deck _ _ Name(print or type) Name(print or type) Parthenon Development Group, Znc. Sasaki .Associates Address 993 Turnpike Street Address 64 Pleasant St, N. Andover_, MA _ 01845 Watertown, MA 02172 Telephone Number 008)6 A 8900 Telephone Number (617)926 3300 t19/87 301 C.%,[R - U0 } ,t 1 s -ll \ 1 ------------ Vx 'A' �; +, 1, � .�e '( �,.; \ .\ ,y� r• � �� k'• ��'�� / !r r �. �1 s�t� N N.T.S. ROSEMONT figure North Andover,Massachusetts .� Parthenon Development Croup,Inc. Site Plan Sasaki Associates Inc„ Watertown, MA j BOOSTER WATER PUMPING STATION PREPARED FOR PARTHENON DEVELOPMENT NORTH ANDOVER, lvlA J . J . B. Associates , Inc . 145 Marston Street Lawrence, MA O1841 4 i r .BOYDCO EAST PROVIDENCE, RJ, 34`0 3 4`1 OPF3ATING CORDIT'IONS 3.C2 3OCKLlY PUMP ;4ockpy ,Pump shall be capable of delivexrirl a capacity Gal, ,:at I 4_O�' T.D.H. The xated horsepower, shall be -9 BP wt 3 4fo.;BPM.. : r i 3.03 IaU/LIG PUMPS: . Each of the Lead/Lag ,pumps shah, be capab:l.o of dolivu,:i:t a capacity of 40 GPM at ;1345 ' T.D.H. ' The rated horaepowQ- of each motor aha1l be . p HP,.at 1800 .RPM. SYSTFX HE D: The•dump station shall be jrovided with a usin?.tn;.Lru t.i.c:t of _ .feety and deliver a mj_niwu:rr Gtation dil,c ?ax:0o l 13U feet., c 3.07 COIMTRUCTIOI'T 3.06 I' -LS : The pumps shall be horizontal, 0].000 coupled, cast; iron, Lronze filled, end suction centrifugal pumps, with brick pull--out design. to £kc i l i Fate. rem:)vinfl of the complete xotating assembly Without distua:biilt, the pipir<<;. :.06 Pumps (cont 'd) T i:e shaft; stall be of medium carbon heat treated, stre:so relieved steel. Lc,,-maximum deflection at'' the impeller of AN, under highoot radial loal, and fitted with a stainless oteel aha,ft sleeve; and raxbon/ces;ami.c mocKnica}. 3.07 MOTORS: The pump 'motors shall be standard close coupled opon dripproof Loll bearing, induction motors. The. motoro shall be of NEMA deuign B, &Ul iiarrnai start' andlei rAtarting.current, Class D nsulation, rated for continuous duty, and a 1 .1? servicb' factor. Motors shall be suitable to:. Phase, , 6O Hexty,, 4 jC1 Volt power. 3.08 I-WNTENA110E }.WI OHMANCT: The pump station ivartillacZur.c� ' ; a:4�rc:,ec:Lai.t shall demonstrate to the owner's satisfaction that due consideration has boar: ei.ven to xeduced maintenanoe cost by incorporating industrJ.�..l. .staridard "off the shelf" components and the following features. Ito special tools shall n �eaquired fox;replacQen of any components witliing the pwnl',. 1!. .00 ELECTRICAL . h .01 CONTROL PANEK The 'electrical. controls shall be mounted' in a iIEMA I cnaiosure fabricated of stoop. Lnclosure door will be hinged and equipped with closure l.atchLng haxdware. The enclosure will bear, a U.L. Label of wL enclosure manufacturer. The control enclosure shall be provided with a removable back panel for mountin ; the control. components. For the safety and convenience of the operator, "screw-cover1° removable panel doors 'will not be acceptable as an equal to a hinged cover. All components shall be securely mounted in 'the enclosure, components labelled, and wires numbered. to, Adhate'funotions and provide a 'mcans of tracing. All components will bear a U.L': Label. All wiring, workmanship, 'and schematics will comply with standards set forth by the national Eleotxic Code (NEC) and Underwriter'•e Laboratory (U.L.�. The controls shall bear an Underwriter's Laboratory (U.L. ) Label for WCLC? ED - 10USTRIAL CONTROL PANEL" before being shipped from the manufaetuxer op •oWlev approved recognized testing laboratory to insure a standard of quality for the protection of the operator. 14•02 WIRLNG/CONDUIT*. All pilot duty control circuit wising, inside the control panel., shall be of MTW, 600 Volt rated, 18 gauge, 900 Celsius temperature rating, with stripped ends 'tinned' to prevent fraying min accordance with- U.L. standard:. All control, or accessory wiring, entering, exiting, or to-the--door control:.;, Wall terminate on a terminal block mounted on the back panel,, except for mat, service breakers or approved disconnect and motor power wires which shall to wired continuously between the motor and the starter overload block. All con- duit and connectors, inside the station, is to be U.L. Listed and installed in accordance with N.E.C. standard. Conduit aball be either E.M.T. or liquid tight, flexible metal type with P.V.C. cover. y h.02 Wiring/Conduit (cant'd) 1.11 current carrying wire, and conduit shall be properly vized in ac;ordanow with h-03 MOTOR PROTECTION: Each pump motor shall be protected by a properly sized combination circuit breaker and motor starter. The circuit breakers will be molded case, air break type, sized in accordance with N.B.C. for the proper amperage and sealed by the ,marufacturer after calif:-• ra0ion to prevent tampering. All circuit breakers shall bear U.L. Listing, The magnetic motor starter is to be of open across-the--line type bearixV_ the. b. b. Label for motor horsepower. All auxiliary contacts shall 'be accessible From the Front. Starter contacts shall be provided with an are chute: to ex And the life of the contacts. Al. motor starters shall -be. equipped with under-voltago release and ambient compensated overload protection. The overload relays will be provided with msaual reset and overload trip "test" features. Final trip setting shall be spade on start-up to actual field operating conditions using a field adjustable auto-calibration dial.. Melting alloy heaters, which cannot be calibrated to field conditions , ave not acceptable. An overload reset button will be mounted than the door to permit resetting of t the starter overload without opening the panel door. 4.04 CONTROLS LP05 Constaat pressure systems shall be controlled by time delayed, pressure swit.hes ,of, snap action design to avoid false cycling due to momentary press- ure surges. The Jockey Pump shall maintain, system pressure and low flow demando. The Lead/Lag pumps will alternate to maintain peak flow demands. 4.06 Elevated storage tank systems shall be controlled by remote level. sensing; at the remote storage tank and alternate the Lead/Lag pumps on demand. 4.07 TRANSFORMER: A 2KVVA By transformer shall be supplied to provide power at 115 Volt to all station accessories, where 115 volt power is not available from utility power. 4.08 LIGHYING PANEL: A minimum 4-circuit lighting panel shall be .provided with four, single pole, 15 amp, circuit breakers; providing individual ahoU circuit protection for the accessories and for the safety of the operator. _ 4.09 ALARM: A separate sensor shall be provided to sense low suction prescure,_.._ shut doves the operating pump, and actuate a. local R3FMA T alarm light. i .�. . PiPIUG 5.•:1 Pt>BUCA EM STEEL PIFE. Class 150 fabricatod pipe and 12y( flanged : . i .ngn , hot-dip galvanized after fabrication. 6uct.i.on :j.ino is to be ._.19 yai ani;ed pipe. A common a" _tt 125# flanged d nc�i?rjo lino ,ihull 1�::_','c L-I rLY VAI,M; Each pTap ahall be i vuv i c1ud with LY, WU joyla but erfly valves with locking level'. They t hall• b, uazit . con body, [311MS seat , Bronze disc and with stainless steel valve :steel. P lied and tappocl to bolt circle. 5.03 CHECK VALVES. Each pump discharge shall be. provided with a non-Awn, full flow, silent check valve, with semi--atoel or c:.s:.st inon body, Stuns; tr!7, and stainless ateel •spring, 125# A.N.S.1. ratted. 5.Gi; ?SIR RELEASE: Each pump shall be equipped with one air 'Meari,a valve oil the discharge, permitting air to escape to atmoophere dining initial priming, 6.01 . L1GHTLNG:- InterionAighting shall be provided by a 60hatt portable d op light with 20' of•cord, allowing for portability in woving•to the location required, 6,02 BEATER; The station is to be equipped with a 1300/1500 Watt electric; cpsce heater. • The heatervehall be controlled thru an adjustable therwoutat and ©uppl.i.ed with a three-wire flexible cord and polarized pliur, .fo,, 3ingl:; phao1e•,. 60 Hertz, 115 Volt power. 6,03 • SPARE `PARTS: One opmplete relacemeut pump shaft Beal and care ga:skot Uhall be supplied with eagh station. 6.01 BLOWER: The station shall have a 115 volt thermostatically operated blower, with a capacity of 136 C.P.M. to exliange the air Aside the chamber. 7.00 r EQUIPPOIT INN FACTUM' 7 .01 In these specifications And accompanying drawings, specific equipment and materials are deemed most suitable for the service anticipated. The l i.(`l: :station shall be the product of a manufacturer with a minimum of twenty (20) years experience in the design and manufacturing of packagy pump atationo. Thio is not done, however, to eliminate others of equal quality and experi- ence. The contractor shall prepare hie bid on the basis of the paiticu.lssx equipment and materials specified for the purpose of determining the low bid. U ter the execution of the oontiaet, should tho contractor desis:e- to oubsti- tote equipment of makes other than those named in the contract, ouch oubo ti- tution will be considered for one reason only; the equipment proposed for substitution is superion or equal in construction to that named in the Qontract, and higher quality has been demonstrated by at leant ten (10) yearo or Uervine in a similar installation. aPEICIs'JICATTOCAS 5- 1tii,:i;G '03 j s 7.01 (cont 'd) In'the event the contractor obtains the engineex'zi apx roval 011 ec,uipsien,:, other than that for which the station wao oz:iL,r.nall� ;odi out, Ucan' 'shall, at his own expense, make any changes i.n tli4 stz �ctttren , Luildii r�, ,;_ piping necessary to accommodate the equipment. 8.00 WARRViTY 8.01 The manufacturer of the lift station shall warrant it to be of quality construction, free from defects in material, and factory workmanohip. The pump station chamber and cover shall be warranted for a period of two . (2) years to be free from defects and resistant to rust, corrosion, or phy;3ic,1I failures occuring in normal service, when installed in accordance wittj the manufacturer's recommendations. The interior equipment, pumps, motors, and apparatu.a shall be warranted fur a period of one (1 ) year, excepting only those items normally consumed in aervice, such as light bulbs, oil, grease, packing, gaskets, and 0-rin&o, The pump station manufacturer shall be solely responsible for the pump station and all related components, warranties, and guarantees by the suppli4r:3 of various components will: not be accepted. Major component_s which fail' to perform as specified by the engineer's (or CIS represented by the manufacturer) or,prove defective in service during the warranty period shall be replaced; repaired* or satisfactorily modified by the "manufacturer without cost of parts or*labor to the owner. After start-- up service has been performed, labor to replaces accessory items, ouch as blowers, heaters, or other accessible and easily serviced parts, shall be the reaponsibility 'of the'owner. ' Such components, parts, or, repairs determined by the manufacturer to have failed because of defectW in workmanship' or mat- erials .will be replaced or repaired.F.O.B. faCltory or other designated location. +: Thia does not imply i;hat the manufacturer assumes liability for corisoquential damages or contingent liabilities arising from the failure of any product (a Parts thereof) to operate properly, be it caused by, resulting from, or arising out of defect, replacement, delay in delivery, or otherwise. 2rVG`7er .-,?win � 70 t , . / Dj FF S Pr ink ��✓�., ��ar:- ,-�his-1��� � S��e�T - - •---�7S_. _ _ _�.� ..�..._. _. + s y r TO i �Q jC JQm a� C1 y 9 r° ;'a�.0 ��:7"e. �C-'Cl-u_!('� �._.... ---r-��f�-�►'' re : u/2 QV-ar1IG"��_.._..�Q�1 • 1 • ■�■. ■ ■r!.!!■ !�!■ !w■ w��ri!lr � � i Y �r fi li � - .:. rlri ■l.ii r..r.i-Ciri■rii�■ - 1 i� s■i!■■!■ ■.■.Cwlwi ■ i■-rir■ ■KaRrr. r i-w *•rrrr � i Mason 111anon■w■ wt■w!■■■! 11 M! # ■■ !!!1 rif ■ ■ 32 0 . aS■■w�!■■■w■ow w ■w�.�■1I• ■ ■.�■■�iM ■�■w■ w ■iMt S ■ li � la■w■1�� 11.afflut #1 a■�Y��f lll��■`��� ��i e���wwx � � �. e■ MEN w r w i�■ w�i w�i � a HIMMIN IN I all ■ ■��■iwrr r rr rrrr� rr � � � �� �� Nam muml Ito Big all 1111CM111119 rd a■* AirL.�Fa111 , �w'= � �■ ��� F■. ti� � � tAl �R IuI al1� ��l1i!l�����l�ll�cl��ii�ti:���'� �� 11 � ■ ■ �w � � 111 1 � � Ir 1 MEN 11 INS INGNIUM11, � . FOR FULL FORTULL MTOR LOAD ;M01TA LOAD 711 : : c 0i Im a INNER m IN cuumum MEN fact gw 0 - ItJN.21.41�ii� H 0 1 now=1 NAM Q 101 i IV I RUN .11 Ilk nm 0 oil I 11110111H wr.Uioil �i Y., AMETER r ' • FULL OR FULL i • . r MOTOR r . r AMR LOAD r r r r ' . - ;�. •'y ,fie: - �-°'- • + r • r Y 1 ETLANQS RESERVATION : v { NC. Erosion and Siltation Control Program I i Rosemont j North Andover, Massachusetts February 17 , 1989 Prepared for Parthenon Development Group, Inc. 853 Turnpike Street North Andover, MA 01845 By Wetlands Preservation, Inc . 569 North Street Georgetown, MA 01833 569 North Street Georgetown, MA 01833 508-352-7903 I y 1 a Erosion and Siltation Control Program Rosemont North Andover, Massachusetts III I Due to the nature of the fine sandy loam soils and the moderate to severe slopes on the site, erosion and siltation control is essential in assuring the proposed site activities for the Rosemont Development will not adversely affect the on-site or adjacent wetland resource areas . The site development plan proposes to control the loss of material from the site by using several techniques to trap and filter sediment from runoff . The plan incorporates the following general goals : ° Reduce to a minimum the area of disturbed soil on the site by developing the project in phases . • Maintain buffer strips along wetland areas within which vegetation clearing, grading and construction of facilities will be restricted. ° Provide several sediment traps and filters around construction areas to allow at least two sediment traps and filtration barriers to treat site runoff before it leaves the site . • Provide a periodic and emergency monitoring and maintenance program to assure siltation control devices are properly installed and located and are kept in a functional condition. The following erosion and siltation control plan provides details on how these goals will be met . Project Construction Phases The project will be constructed in phases . This will limit the area of unstabilized soil surface on the site at any time and will allow areas to be stabilized prior to clearing other areas for construction. Table 1 provides the sequence of construction i I ! 1 I j relative to site clearing, excavation and grading activities and wetland crossings . During each phase of construction all slopes and disturbed soil areas will be' seeded and mulched (or hydroseeded) as soon as construction in the area is complete. The initial site construction efforts will be focused on the road drainage , rip rap retaining walls and site access road at Chestnut Street . This is the area of steepest slopes on the construction site and will be constructed as rapidly as possible and stabilized thus allowing for completion of the roadway through the Phase I facility construction area. The Phase I construction will include construction of Units 1 to 8 . Phase II facility construction will involve construction of the roadway, detention pond , utilities , etc . for units 12 to 17 and construction of the emergency accessway to the Holly Ridge subdivision. As with Phase I the detention pond and roadway will be completed first to stabilize site drainage conditions prior to grading for the lots . Phase II will involve crossing the small intermittent stream at wetland flags W30 to X3 and X3 to Y6 . The construction sequence for the stream crossing is provided in Table 1 and details of the crossing design are provided on the definitive design plans. The Phase III facility construction will complete construc- tion of units 9 to 11 and all associated roadway and utilities . The sequence of construction is similar to that of Phases I and II and will include construction of an intermittent stream crossing at wetland flags W11 and X27 . 2 II j I Maintenance of Buffer Zones The project has been designed to maintain buffer strips along each wetland resource area on the site . A 25 foot buffer strip has been established within which no vegetation clearing, grading or soil disturbance will occur . Erosion and siltation barriers will generally be located at the uphill edge of this buffer strip to restrict activities near the wetlands . Addi- tionally, a 50 foot no construction buffer strip will also be provided to assure no buildings , roadways , parking areas or other facilities are located within 50 feet of bordering vegetated wetland boundaries . This no construction strip will eventually result in at least a 50 fbot vegetated strip between all structures on the site and wetland resource areas and will thus aid in long term protection of the resource areas . The only areas where the buffer strips will not be maintained is where it is not possible (i. e . , road crossings of wetland areas) , not feasible (i . e . , detention ponds and along wetland flags W14 to W15 and Z4 to Z6 ) or when it is not desirable (i . e . , in areas where wetland replication is proposed) . Sediment Traps and Filters Site runoff from, the construction site will carry with it soil particles which can, if not removed, cause siltation in wetland areas . The site development plan is designed to provide several sediment traps and siltation filters at strategic locations on the site to intercept and remove silt from the water prior to its release from the site. These traps and filter barriers are designed to divert site drainage through from two to 3 r r i four sets of sediment control devices prior to discharging the water from the site . The principle structures providing this water treatment will be the two permanent detention ponds , the berm/sump/stone filter matrix and hay bale and siltation screen barriers . The permanent detention ponds will be constructed early in each phase of facility construction so as to be used as sediment traps during construction when site erosion is most severe . The detention pond discharge structures will be modified during construction to provide a vertical overflow pipe which .will allow heavier silt and sand to settle in the basin of the pond. Periodic monitoring and maintenance of the detention ponds will be performed to assure their function and to remove excessive silt accumulations which may occur. This activity will be a part of the site erosion and siltation Control monitoring and maintenance program. Due to the topography of the site in the vicinity of the site access at Chestnut Street , detention pond No. 1 will be constructed in the location of the future tennis court during Phase I construction. The pond and associated berm system will collect and treat a portion of the runoff from the Phase I construction area and the discharge from the pond will be piped into the Chestnut Street drainage system, The detention pond location is intended to intercept much of the site runoff which would normally be directed toward the rip rap retaining walls at the site access at Chestnut Street. The pond will continue to function as a sedimentation pond all other facilities in Phase I are completed and all soil surfaces uphill of the pond are 4 i � r stabilized, Silt in the ponds will then be removed and the tennis court constructed . At the proposed accessway to the site from Chestnut Street , two rip rap retaining walls will be constructed. Above the upper wall a concrete swale will be installed to direct site runoff in this area directly to the Chestnut Street road drainage . The swale will lead to a catch basin located at the northern end of the retaining wall . Retails of the system are provided along on the site plans . During construction the downhill edge of disturbed soil along the retaining walls and the area immediately above the swale will be hay baled and silt screened to reduce siltation losses . Following site clearing but prior to any soil grading a series of berms will be constructed as detailed in the erosion and siltation control plans. The berms will be constructed of existing, soil on the site using compacted subsoil with a 4 inch loam cover. The berms will be' designed to direct site runoff to a series of sediment sumps , stone , hay bale and siltation screen filters . The proposed location of the berms and other structures are shown on the site grading plans . The location of these structures may be adjusted or they may be augmented by additional release points if monitoring indicates changes are required to attain satisfactory filtration of runoff. The berms will be seeded and mulched (or hydroseeded) after installation to expedite soil stability . All berms will be backed by a single staked hay bale Line and siltation screen. Hay bale check dams and sediment sumps will be installed along the uphill edge of the berms to slow runoff and trap silt . i I Along the berms several release points will be established. The location of the release points is intended either to disperse flows over vegetated ground and off-site or to direct it to areas where additional filtration and treatment can occur . Each release point will consist of a crushed stone filter dam and a j sediment sump. The stone filter will be enclosed in a double staked hay bale line and siltation screen barrier . Sediment will be periodically removal from the sediment sumps and filtration barriers . Additional release points will be added if required to further direct or disperse runoff flows on the site . Along the roadway and parking areas , berms , sumps and hay bale/silt screen filters will be installed to slow runoff velocity and direct flows to filter barriers and sumps . Monitoring and Maintenance Program The Applicant or his designee will be responsible for establishing an Erosion and Siltation Control Monitoring and Maintenance Program. This program will document the installation of site sediment and runoff control measures and all deviations in location or design of sediment control structures . The program manager will coordinate site inspections and will establish a weekly and emergency (storm conditions with over 0 .5 inches of rainfall) monitoring program which will document the status and any remedial actions taken or required to control runoff on-site. The monitoring program will involve inspection of all critical areas of runoff release from the site. During the inspections remedial action will be taken immediately to correct inadequate control structures . A covered stockpile of 50 hay bales and 400 feet of siltation screen will be maintained on- site at all times for such remedial action. 6 i f W 1 Table 1 Rosemont Construction Sequence Erosion Control Program Chestnut Street Access and Roadway Clear trees and remove debris from Chestnut Street drainage and detention pond #1 . ° Install hay bale check dams along Chestnut Street and below the detention pond construction area. Install drain line and catch basins along Chestnut Street . Construct detention pond #1 and modify outlet to vertical overflow. Connect to Chestnut Street drainage . ° Clear trees and debris from Phase I roadway and access area. Install erosion and siltation controls at access areas and along road . ° Remove stumps and loam and grade road bed and access area to subgrade . ° Install retaining walls and associated Swale and piping at access area. ° Loam, seed, mulch (or hydroseed) all exposed soil area. Facility Construction (Phase I . II and III) ° Clear trees and debris from construction area. ° Install berms , stone filters , hay bales and silt screen around perimeter of the construction area. ° Construct detention pond #Z (Phase II ) . ° Remove stumps and stockpile loam in a hay bale perimeter. ° Grade road to subgrade , construct stream crossings (Phase II and III) . ° Install drainage system to detention pond and utilities . ° Grade road shoulders and loam and seed where feasible . ° Gravel road and berm runoff to catch basins . • Pave road with bx.nder. • Grade site, install foundations, utilities and backfill . ° Loam, seed and mulch (or hydroseed) exposed soil surfaces . ° Complete final landscaping, regrade and stabilize berm areas . • Remove erosion and siltation barriers . Stream Crossings (to be conducted during low flow periods) ° Clear vegetation from crossing location. ° Install sedimentation barriers at crossing area. ° Remove and stockpile ( in hay bale perimeter) existing hydric soil . ° Set culverts and construct headwall structures . • Loam seed and mulch side slopes of crossing and reform hay bale and silt screen barriers . • Construct wetlands replication areas (refer to NOI ) . 2