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HomeMy WebLinkAbout2018-02-20 Construction Stormwater Pollution Prevention Plan 11/16/17 Rev 1/23/18 d f i o- I , Construction Storm Water Pollution Prevention Plan i Land Disturbance Permit Chapter 160— Stormwater Management & Erosion Control Bylaw Lot 1A (Tax Map 107A Lot 294) Lot 1 B (Tax Map 107A Lot 46) Lot 2A (Tax Map 107A Lot 293) Lot 2B (Tax Map 107A Lot 28) Located off of Mill Road & Johnson Street, North Andover Prepared By: Sullivan Engineering Group, LLC P,O. Box 2004 Woburn, MA 01888 (781) 854-8644 Prepared For: TKZ, LLC 1665 Great Pond Road North Andover, MA 01845 (978) 685-5179 November 16, 2017 Revised: JanuatT 23, 2018 'TABLE OF CONTENTS Page INTRODUCTION Background......................................................................................................... 4 SWPPPContent................................................................................................... 4,5 SWPPP COORDINATOR AND DUTIES..................................................... .......... 5 FACILITY DESCRIPTION SiteLocation....................................................................................................... 6 ConstructionType................................................................................................. 6 Existing Site Conditions.......................................................................................... 6 SitePlan............................................................................................................. 6 IDENTIFICATION OF POTENTIAL STORM WATER CONTAMINANTS Significant Material Inventory.................................................................................. 7 Potential Areas for Storm Water Contamination............................................................. 7 A Summary of Available Storm Water Sampling Data...................................................... 7 STORM WATER MANAGEMENT CONTROLS Temporary and Permanent Erosion Control Practices....................................................... 10 Construction Practices to Minimize Storm Water Contamination.......................................... 10-11 Coordination of 13MPs with Construction Activities......................................................... I I MAINTENANCE INSPECTION PROCEDURES Inspections......................................................................................................... 12 EmployeeTraining................................................................................................ 12 Certification......................................................................................................... 13,14 Appendix A:INSPECTION LOGS 2 LIST OF TABLES 1 Potential Construction Site Storm Water Pollutants 2 Locations of Potential Sources of Storm Water Contamination LIST OF FIGURES • Portion of Town of North Andover Assessor Map showing subject properties • Registry Plan of Land showing the creation of the 4 single family lots • Site Development Plan for Lot IA, 1B, 2A, 2B 3 1.0 INTRODUCTION 1.1 Background In 1972,Congress passed the Federal Water Pollution Control Act(FWPCA),also known as the Clean Water Act(CWA),to restore and maintain the quality of the nation's waterways.The ultimate goal was to snake sure that rivers and streams were fishable,swimmable,and drinkable.In 1987,the Water Quality Act(WQA)added provisions to the CWA that allowed the EPA to govern storm water discharges from construction sites.On March 10,2003,EPA published the final notice for General Permits for Storm Water Discharges from Construction Activities Disturbing 1 Acre or Greater.The general permit includes provisions for development of a Storm.Water Pollution Prevention Plan(SWPPP)to maximize the potential benefits of pollution prevention and sediment and erosion control measures at construction sites. Development,implementation,and maintenance of the SWPPP will provide TKZ,LLC(general contractor)with the framework for reducing soil erosion and minimizing pollutants in storm water during construction of each building lot.The SWPPP will: Define the characteristics of the site and the type of construction which will be.occurring; Describe the site plan for the facility to be constructed; t Describe the practices that wil l be implemented to control erosion and the release of pollutants in storm water; Create an implementation sched►►le to ensure that the practices described in this SWPPP are in fact implemented and to evaluate the plan's effectiveness in reducing erosion, sediment, and pollutant levels in storm water discharged from the site;and Describe the final stabilizationitermination design to minimize erosion and prevent storm water impacts after construction is complete. 1.2 SWPPP Content This SWPPP includes the following: Identification of the SWPPP coordinator with a description of this person's duties; 4 Identification of the storm water pollution prevention team that will assist in implementation of the SWPPP during construction. Description of the existing site conditions including existing land use for the site(i.e.,wooded areas,open grassed areas, pavement,buildings,etc.),soil types.at the site,as well as the location of surface waters which are located on or next to the site (wetlands,streams,rivers, lakes,ponds,etc.); Identification of the body of water(s)which will receive runoff from the construction site,including the ultimate body of water that receives the storm water; Identification of drainage areas and potential storm water contaminants; I I Description of storm water management controls and various Best Management Practices(BMPs)necessary to reduce erosion, sediment and pollutants in storm water discharge; Description of the facility monitoring plan and how controls will be coordinated with construction activities; and a Description of the implementation schedule and provisions for amendment of the plan. a 2.0 SWPPP COORDINATOR AND DUTIES l W The construction site SWPPP coordinator for the facility is Mr.Thomas Zahoruiko(phone number:(978)685-5179 with TKZ, LLC,(general contractor).Mr. Zahoruiko's duties include the following: : Implement the SWPPP plan with the aid of the SWPPP team; Oversee maintenance practices identified as BMPs in the SWPPP; s i Implement and oversee employee training; Conduct or provide for inspection and monitoring activities; Identify other potential pollutant sources and make sure they are added to the plan; Identify any deficiencies in the SWPPP and make sure they are corrected;and Ensure that any changes in construction plans are addressed in the SWPPP. 5 1 3,0 FACILITY DESCRIPTION 3.1 Site Location The construction site is comprised of four building lots referenced as Lot I(Tax Map 107A Lot 294),Lot I (Tax Map 107A Lot 46),Lot 2A(Tax Map 107A Lot 293),and Lot 2B (Tax Map 107A Lot 28). The building lots are located at the southerly intersection of Mill Road and Johnson Street in North Andover,MA. Presently three of the lots are undeveloped and one lot(Lot 2B)has an existing single family house with an address of 865 Johnson Street,North Andover. 3.2 Construction Type The project will consist of four(4)single family dwellings constructed with wooden frames. Individual septic systems have been designed and approved for each lot. Driveways will be paved, 3.3 Existin Site Conditions The present site consists of three undeveloped lots and one lot improved by an existing single family house(#865 Johnson Street), This property was subdivided on March 28,2017 into four lots,with three(3)of the lots being 1.3 acres and one(1)of the lots being t acre. There are wetlands on the southerly pot•tion of the properties and the wetland line location has been approved by the North Andover Conservation Commission, 3.4 Site Plan Site plans are attached showing property boundaries,the proposed location of the houses,paved driveway locations,underground drainage infiltration units,septic system components(all lots),wetland resource areas(and associated protective buffers),and proposed site grading. 2.2 Acres(of the frill 49 Acre site)will be temporary disturbed during construction activities. The majority of the site runoff will flow towards the wetland resources areas at the southerly portion of the site. The existing house (865 Johnson Street)will be razed. Two of the lots(Lot IA+Lot 113)have proposed construction activity within 100 feet of a bordering vegetated wetland. Lot 2A and Lot 2B have all proposed work outside of the 100 foot wetland buffer zone. Each lot has an approved septic system design. Each lot will have a drainage infiltration field proposed to collect/recharge roof runoff. Erosion control barriers,soil stockpile areas,and temporary construction rip-rap driveway entrances are shown for each site. 6 4.0 IDENTIFICATION OF POTENTIAL STORM WATER CONTAMINANTS The purpose of this section is to identify pollutants that could impact storm water during construction of the facility. 4.1 Sianificanrt Material Inventory Pollutants that result from clearing,grading,excavation,and building materials and have the potential to be present in storm water runoff are listed in Table 1.This table includes information regarding material type,chemical and physical description,and the specific regulated storm water pollutants associated with each material. 4.2 Potential Areas for Storm Water Contamination The following potential source areas of storm water contamination were identified and evaluated; Cleared and graded areas; Building construction; Construction site entrance and asphalt driveway construction; All undisturbed areas. Table 2 presents site specific information regarding storm water pollution potential fi•om each of these areas. 4.3 A Summary of Available Storm Water Sampling Data i j No storm water sampling data is available for the site. I 4.4 Waterbody. Receivina Stormwater Dlschar e ' Based on the most current USGS map for this area,the storniwater runoff for this site drains to the wetland resource area at the southerly portion of the properties and to a lesser extent to an unnamed brook further south of the wetland resource area. i 0 1 7 Table 1 Potential Construction Site Storm Water Pollutants Trade Name Material Chemical/Physical Description�ij Storm WaterPnllutantstit Pesticides (insecticides,fimgicides, Various colored to colorless liquid, Chlorinated hydrocarbons, herbicides,rodenticides) powder,pellets,or grains organophosphates,carbamates, arsenic Fertilizer Liquid or solid grains Nitrogen,phosphorous Plaster White granules or powder Calcium sulphate,calcium carbonate,sulfuric acid Cleaning solvents Colorless, blue, or yellow-green Perchloroethylene,methylene liquid chloride,trichloroethylene, petroleum distillates Asphalt Black solid Oil,petroleurn distillates Concrete White solid Limestone,sand Glue,adhesives White or yellow liquid Polymers,epoxies Paints Various colored liquid Metal oxides, stoddard solvent, talc,calcium carbonate,arsenic Curing compounds Creamy white liquid Naphtha Wastewater from construction Water Soil,oil&grease,solids -equipment washing Wood preservatives Clear amber or dark brown liquid Stoddard solvent, petroleum distillates, arsenic, copper, chromium Hydraulic oil/fluids Brown oily petroleum h drocarbon Mineral oil Gasoline Colorless,pale brown or pink Benzene,ethyl benzene,toluene, petroleum hydrocarbon xylene,M`1'BE Diesel Fuel Clear,blue-green to yellow liquid Petroleum distillate, oil & grease,naphthalene,xylenes Kerosene Pale yellow liquid petroleum Coal oil,petroleum distillates hydrocarbon Antifreeze/coolant Clear green/yellow liquid Ethylene glycol, propylene glycol, heavy metals (copper, ]cad,zinc) Erosion I Solid Particles Soil,Sediment (1) Data obtained from MSDSs when available 8 Table 2 Locations of Potential Sources of Storm Water Contamination Drainage Potential Storm Water Potential Pollutants Potential Problem Area Contamination Point Building construction Plaster,cleaning solvents,asphalt,concrete, Accidental spills of paints and cleaning solvents, paints,hydraulic oil,gasoline,antifreeze, leaking hydraulic oil and antifreeze from construction soil erosion,fertilizer,pesticides,glue equipment,gasoline and diesel fuel spills while adhesives,curing compounds,wood fueling construction equipment,erosion of exposed preservatives,kerosene and stockpiled soils,and degradation of scrap dry wall can potentially contaminate storm water.Asphalt chemicals can be released to storm water if a rain event occurs before curing is complete. Construction driveways Asphalt,hydraulic oil,gasoline,antifreeze, Leaking hydraulic oil and antifreeze from clearing, soil erosion,fertilizer,pesticides grading and asphalt application construction equipment.Gasoline and diesel fuel spills while fueling construction equipment,and erosion of exposed and stockpiled soils.Asphalt chemicals can be released to storm water if a rain event occurs before curing is complete.Tracking of soil into the road through the construction site entrance. Tree removal area Soil erosion,fertilizer,pesticides Ruts caused by logging equipment can fill with water, preventing complete re-vegetation. All undisturbed Areas None No storm water related issues with this completely vegetated area 9 5.0 STORM WATER MANAGEMENT CONTROLS The purpose of this section is to identify the types of temporary and permanent erosion and sediment controls that will be used during construction activities.The controls will provide soil stabilization for disturbed areas and structural controls to divert runoff and remove sediment. This section will also address control of other potential storm water pollutant sources such as construction materials(paints,concrete dust,solvents,plaster),waste disposal,control of vehicle traffic,and sanitary waste disposal. 5.1 Temporary and Permanent Erosion Control Practices A list of best management procedures(BMPs)has been developed and the locations of these BMPs are shown on the approved Site Development plan. A number of the BMPs included in this plan have been developed to serve as post-constriction storm water controls. Site Wide Control Measures To prevent soil from washing into the undisturbed areas of the site,the following BMPs will be implemented: Silt fencing(or construction snow fencing)will be placed along the perimeter of the entire site to be cleared and graded before any clearing or grading takes place. Combination of various forms of siltation control are proposed at various locations throughout the site based oil proximity to the wetland resource areas(See the"Erosion and Sediment Control"plan) Designated Soil stockpiling areas are shown A temporary construction entrance is shown at each proposed driveway entrance 5.2 Construction Practices to Minimize Storm Water Contamination All waste materials will be collected and stored in a securely lidded metal dumpster. All trash and construction debris from the site will be deposited in the dumpster,The dumpster will be emptied as needed offsite. No construction materials will be buried on-site.All personnel will be instructed regarding the correct procedure for waste disposal, All sanitary waste will be collected from the portable units a minimum of two times per week. Good housekeeping and spill control practices will be followed during construction to minimize storm water contamination fi•om petroleum products,fertilizers,paints,and concrete. Good housekeeping practices for each drainage area are list below. To prevent potential storm water contamination,the following BMPs will be implemented: 10 All vehicles on site will be monitored for leaks and receive regular preventive maintenance to reduce the chance of leakage. Petroleum products will be stored in tightly sealed containers which are clearly labeled. Spill kits will be included with all fueling sources and maintenance activities. Any asphalt substances used onsite will be applied according to the manufacturer's recommendation. All spills will be cleaned up immediately upon discovery. Spills large enough to reach the storm system will be reported to the National Response Center at 1-800-424-8802. Concrete trucks will not be allowed to wash out or discharge surplus concrete or drum wash water on the site. Any asphalt substances used onsite will be applied according to the manufacturer's recommendation. Sanitary waste will be collected from portable units a minimum of two times a week to avoid overfilling. A covered dumpster will be used for all waste materials. All paint containers and curing compounds will be tightly sealed and stored when not required for use.Excess paint will not be discharged to the stone system,but will be properly disposed according to the manufacturer's instructions. Materials and equipment necessary for spill cleanup will be kept in the temporary material storage trailer onsite. Equipment will include,but not be limited to,brooms,dust pans,mops,rags,gloves,goggles,kitty litter,sand,saw dust, and plastic and metal trash containers. Spray guns will be cleaned on a removable tarp. 5.3 Coordination of BMPs with Construction Activities i Structural BMPs will be coordinated with construction activities so the BMP is in place before construction begins. The following i BMPs will be coordinated with construction activities: The temporary perimeter controls (various forms of erosion control barriers) will be installed before any clearing and grading begins. (See Erosion and Sediment Control Plan for forms of erosion control&locations) I Once construction activity ceases in an area, that area will be stabilized with permanent seed or other permanent landscaping means. I The temporary perimeter controls will not be removed and shall be maintained until all construction activities at the site are complete and soils have been stabilized. 6 l k 11 u 6.0 MAINTENANCEIINSPECTION PROCEDURES 6.1 Inspections Visual inspections of all cleared and graded areas of the construction site will be performed daily and within 12 hours of the end of a storm with rainfall amounts greater than 0.5 inches. The Town of North Andover Planning Department may require weeldy inspections and reports to be generated based on past practices. The inspection will be conducted by the SWPPP coordinator or his designated stormwater team members.The inspection will verify that the structural BMPs described in Section 5 of this SWPPP are in good condition and are minimizing erosion.The inspection will also verify that the procedures used to prevent storm water contamination from construction materials and petroleum products are effective. The following inspection and maintenance practices will be used to maintain erosion and sediment controls: Built up sediment will be removed from erosion control barriers when it has reached one third the barrier height. Silt fences will be inspected for depth of sediment,for tears,to see if the fabric is securely attached to the fence posts,and to see that the fence posts are firmly in the ground. Temporary and permanent seeding will be inspected for bare spots,washouts,and healthy growth. The maintenance inspection report will be made after each inspection.A copy of the report form to be completed by the SWPPP coordinator is provided in Appendix A of this SWPPP.Completed forms will be maintained on-site during the entire construction project.Following construction,the completed forms will be retained at the general contractors office,TKZ,LLC,for a minimum of 1 year. If construction activities or design modifications are made to the site plan which could impact storm water, this SWPPP will be amended appropriately. The amended SWPPP will have a description of the new activities that contribute to the increased pollutant loading and the planned source control activities. 6.2 Employee Trainin Employees will be educated about the requirements of the SWPPP. This will include background on the components and goals of the SWPPP and hands-on-training in erosion controls,spill prevention and response,good housekeeping,proper material handling, disposal and control of waste,equipment fueling, and proper storage,washing, and inspection procedures. All employees will be trained prior to their first day on the site. 12 63 Certification Owner Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manages the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. Name Title Date i i i 13 i Contractor• Certification (TKZ,LLC - General Contractor) I certify under penalty of law that I understand the terms and conditions of the general National Pollutant Discharge Elimination System (NPDES) permit that authorizes the storm water discharges associated with industrial activity from the construction site identified as part of this certification. Name Title Date 14 Appendix A Inspection Logs Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form To be completed every 7 days and within 24 hours of a rainfall event of 0.5 inches or more Inspector: Date: Inspector's Qualifications: Days since last rainfall: Amount of last rainfall: Stabilization Measures Date Since Date of Drainage bast Next Stabilized Area Disturbance Disturbance (Yes/No) Stabilized With Condition Stabilization required: To be performed by: On or before: 16 Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form Drivewa Entrance(s): Does Mueli Sediment Is the Gravel Clean or is it Get Tracked on to Filled with Sediment? Road? Maintenance required for driveway entrance(s): To be performed by: On or Before:- 17 Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form Perimeter Structural Controls: Date: Silt Fence Drainage Area Has Silt Reached Is Fence Properly Is:There Evidenee.of Perimeter 1/3 ofF.ence:Height? Secured? Washout or Ovar- topping? Maintenance required for silt fence: To be perforined by: On or before: 18 f Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form Changes required to the pollution prevention plan: Reasons for changes: I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete.I am aware that there are signification penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. Signature: Date: 19 Town of North Andover, MA November 16, 2017 ,c-0014 1a7.A-aoso 107.A-014 r � �- - N,N, 107,A 4140 MI 107,A-0061 107,p002 p. 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DO \ SA4ou✓J�Cfn./Ty.liLR,ar l�mr.N amwlx ' C8Aa34,13]7 s,F, •ow•` - IIk A.0 + e]' - m.Ino+ars(a�, - aaclrm3xcxir er.zl.R..17A.R.0 naEov alvraoro L07L - } l 1 `.. 3 y - T•a[x Y Pr r Lrxf - . -i•.=..\ +ro y `" 1 I 1 sane rwr AW'Dr aoosl s.n mN-..fe].•, fln aTr w]npv IaW at ' ♦ ♦ sou-axfC ` m \ ���s 1 1 .: W'.�., ,`"•"° I a SULUVAN ENGINEERWG GROUP, LLC PREPARED DRAINAGE OVERLAY ''" \ �`_ • . ` . . INFORMATION TO BASE PLAN ti •� \ PREPARED BY MERRIMACK ENGINEERING. \ - a? ,- �r •a.u�m N w - Ivaircr xfor an rx!afame Aa^"L . SEE CONSTRUCTION DETAIL a SPIFFY FOR DETAILED ELEVATIONS ddd "m YL S \, TEMPORARY CONSTRUCTION EWRANCE a \per (SEE CONSTRUC71CN DETAIL) FOR INFILTRATION FIELD PLO _ _ ]rear r•.as f - PLAN OF I - SUBSURFACE SEWAGE DISPOSAL ST'=M o 'T'War wN wW NORTH ANDOSER. MASS. F - LIMIT OF WATERSHED _ . PAmAam m CAROLE R. RESCA o - � MS JDIAVSO.V.4IRLLT' A�wr f LOr-M� SOOLm—wr/ IA Para V xa, mrr n rLrenorol g LOT TA, — TOTAL SITE DISTURBANCE REVISED: 7/24/18 `Aw1 a fir' AMRRMCKkMG490MM` = 5 21,780 5.F:/0.5 ACC pA $6 PARR STREETTED: 1/8/18 ANDOVER nrMACHUSEM 01810 sxrcr!ar r _ NOTES . -. . +J�e�p}fxe aaa Anwnlelf rnxx suuu rc.m oaxrouwrot xrrlr Lra ' - - , .. - aJ Au rmre re ar aovrrt wavao uxarasA.n'Arid rxt.ar uaG molt Axa war: - .- - - .. aJ Tali arsmr rs xer amfrre rar vrt iXDr A what arlxRrR. - - A)AWvi AS[SYaaR. a Raars AMD dllr[a¢Axa N[eAC[wMY Lrmnm Ills fYRIIM . . _ v R[r ar ll�Yd4 rtti AC nr avNrcRYW tt rtlX alt rfla(fJ. . - - .�: �\' - s) cmfn AumuG amR rxs mm fwu a rx[r er uAr,sTrurs,vAxfwYr. •. - .. - rums,s.,wsr cvnarrxenax xAsruAG slut am s alw4 x sarl®.xa - ♦ - ix°"rs r'""`ec'anO16 wrxaazr x,acx un aeex m aerwm aue wa,e�vr a - _ ., ♦ \ nu alnafu.Aaa,awr Aor Ac AUaXAA ,LY q ♦ - TJ Au vm,r°aurc_n wn ardrmn oR wnnn•I+e s mrss Axo fruu xA.s xwmr.mwrf \� - \ `r, L.) nN+ux ram wa>rou wur rAxw rbw msRle rwa A✓a ma,ms - _ _ - � � _ - .. .. - ♦ ♦ w n¢warlrx a:avma wmAnxame arvTns>r s cuxx nau o.�.rR,x.,rs A.a ' _ � k,,, � \ - naraxroa mou rma:mm�au�rmr vumAn mt cue wrr`ilwr ar Au . `` _ _ A'?p�.,','♦� Fvx/nv rmlilCf s[IVM CMrfrRIIVIM.'1 xOMr.rIR ORS/CN rtWNRtA 9+44.a[XvrllRa ; j w .. �c:� ` rlNfGkr[t1'OF AW IXGRIMXPiI fV IHST M{IrivlLL Amax¢ul x TM.' se - 1a.7 Axm mlmuow sxuL xmrn Tur adw rxFrKmr AA uRs rtrAorAxs o<Rre RrcAwnfx. ' ..j_ ♦.v`,rry 1- j j r la. e.�• g _♦`�i*et ,xe aircRAcmR rr r�wA uur rtr+so+mR loe mr.u-.vu.T r.•oramla An ' 1 I ♦'- - \` _ - j � ' \ i'��' la) ir4W nM iRRa axAft x al[uwm As rMr vYTNC rMWaNI[nax afWRAar. - 't I �. l ' ~•J \ `� . �. - rsJ Au mra AwmoxevY axAAi K xAwera MM YbNLTlO 4AArM0 ur,ucRs RexO°aRRe tt \ .i.'. ,��% 1 •x.w iOLLiiL ` t l .. a�may lui v arm) - ri1 mHur xtriJ Ltlfl,nl pw n aIM AIr1 AlNi1v n[ISS 91 PkNRTN9a 441A w tt ♦'� r:A - AREA-M.e91 S.F. ` t t svruea wrncx A0a rr.w rx aeEip4 L y a rU xo xuuxo:[Ras rmw a rRr Rlowem frnw. t ♦ faaaaL AC. \ _ . t�fi ♦ ...L`bA�44.S7L S.F. - e'_ 1t l \1 - G r0a ma 7rs ILL 1urtWALs ANf"1MNnrXrf Axa Ail pgru)frex rAorspyR{T • , - - w100% ` l l 9 rA�M[11M[r tZ orx�or ' / � f \ l laxl IRROaM sodas.IrM69 a lbrra. ' - ♦ / •r r ! � r'k. t raV 16} �Y Grrn'[T•LM1Yra wYfxW M GR[MCIWIKNICN 1MIOIRoa}rorpaex • ` .L l PROPOSED-WRLTRA.TION FIELD -7.si', (11.32'1NtlE%14'LONG) CCN3f5nNC OF MI-TRATDR aurCK 4 UN1 S _1r——"__ •nw' Y i T mat Yam N ` �✓✓ t - (SEE DETAIL SWEET} TO COLLECT ENTIRE RCDF AREA OF HOUSE VIA 4,HDPE ROOF GRAINS =O %��+~• 3 i TEMPORARY CCNSTRUCTION ENTRANCE ... - _ _ ♦\ f ��._ _.' r (SEE CONSTRUCTION DETAIL) DESIGN CALCUI-NnONS rni:IT is Do- } ♦r „un - - ,r • �;�� axvlal- { Rtm, ^� • above Riue vAm�.xm�/Rr.•��uVvAT/vvar _._� ....f '�'��nrs I *1 AFr�r AUR 10.rHNa IIIO1CI10(Yr MAR} �Il��(' y 7fF I fFG aALsr ' - . .. - ."'Xis'.Ik 1 / - I 1 rwrtr r+vAarr.SR.rr✓�.dL vu./sr.-�uWrc LIMIT OF'WATERSHED .ffi •�" �xr `� + fr !' r *�.ru/i@°At./rr..t7Sm ar mrxsx a[wa°m uxLnnrxvrs Ar-!Lff...I&n.or rnrsrc+r A—m - - rnrR.aw.owaf � »M \ �i g g� �'1 -)r�+ � I y� ama rAvs Roca.Rfae,4+a ms..aea au.al,r xar lmawl Yana aw pw. 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SALy. \ \ l \ `\� EL4 ` \< - Sa }WF STJR]!Id kM xAmlm mr U6 M11N A d1eMPL YrnroOl. -' \`+ - i - - W a"m.c"r anlrm�ilull�kowsia+4V [m+ `w.rasr(t}!i nrrux \ � '\j`- \ \s - 1� - '.psfaa.Ia a .1 - AJ mlxe 1M1Aa1.a+a lwc frnru aRut ar rvu or rl,r,mouo,uefvrulr, . ` � \ ` ,y � � - cwwltt mam wAciur¢n imcw wm cwnr wroa o]mv�ri ra uiarrear m \. ,. .. � \.. ti - •¢�: .l ) . �� N1P.1T.Aw rnNO[r mar m-�2_R'K,TN!S[iI1C LANK f?. � }S -\• ••� `s♦.' - - '� ��I - rS w<i wwa frw.t K fA'a,rA.wxr oA wPraa'oat scs•.x:.fe tau rNwr amrxier turtle - n ` ` �' ♦ - "" 1 - - +�j r rmr eee�av uxneEenemm unarfrrs rAs semi nfeu .wa tiAwwrf+ 1 - - yi i I ` A[M�,u rwlr rf4a tl,+fR✓.rMPn pW YMkM6f WD AAP AMRn1tWAR. . 4. 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'..�� .. _' '_� -. _- - ```\ ` � . •r�, _ fW+.ap ttgrFr RN[r K wgaaea K'IfR Ff rXr'fMeIiRUCnaN CPYSMar. `l\ , •a�`Y:\ ♦` ♦\ a '�i "'I fmrnr'r"roixru°w.rMf'�nir"s�roAttm,wo°r:.r""roroxr "x w..e°xe'n urr miir•°r:w,mun \` `\. �'`���?i •�\ ♦`---"*'--���, `�'wNOmrc eAe nrr:cr mr iai�H01 trrr rwuc malr os Kw+wm»xra. \ wx a \ \ .. . -. \\.': \ }- _1`^—_`��� �-._.r__\ r y ♦ - r4U No n[11.lam❑tor Prrtax�et rfrc rRarosm frsr{N, 1 .��__\ Y. - TPoaaV fa1T�. -m.7 r.v arrrrrf fix.tub Ie Nu w"�a"'f A',gym''ane+rx r ♦ _ 1 WT MIX 12D v.a F(OV,Pm+�i f�mf mi£W+'xr.[s P'r++ofA[Or 4 r19fFtlrr.]rC CMA Y , , e 57. 2 S.i. \\ f vun or xnr rzeayr lrrrmwmr ffaoz uMtff anrc..inrr xerm. a1.b124`Al.:r l \ \ M"Y♦ lu G'OILtY awW[C YiRM riff W'r IX'GI.L��6rrtCl(1MllltLrtG rRO1rClIP1' 4.` _- �• ♦fir 160k^mf/ - - i T^` fl%32� nynpalgp I r @ INFlLTRA TION rAr •7 I 11.77 WIDE%♦D•LONG)) a - I Cl'INFILTRp7'OR CU3CR 4 UtAIR(SM DE = 4 CSEE DETAIL SHEErY TO CCLLECT ENTIRE RODF AREA CF HOUSE 41e5•W C4LCU[p7f0NS mA v HDPE ROOF DRAINS fraa:fear a• ;^ .udatnce`. ` ar]fw,fnr.—araaaer. rfo atf,ra„/mef. i mv. .�' - - r -y, \\ •1 I - lYlreriVr alb}N r 3r'-.[rr[emr irk.Jj„', 3WN£` 1 l raOiGl WsatT. S.r./ir.,tLi CALl3I..Lr OLNI. nnlrNrs U) .a ' / ^7'f\ ` mr fr wady an.m ]'MtlC x 1'OF r so•urla �'CCALJ3C W VFr.._UL ..OF 111[ Y flOVN[0 . rna.z'fxwtfd a.xta/ r 3"'4j a �� Ilk. \\ 4Ar2rRG6MM A7_I n .Jffi.I]:w rIVMA'IwVmtD xr —T a R !� T I['41 \ aarsG TAMr Nlb2e]O¢a r ua ne..Peo at Pavr!,er ua rxrk I]eo aAl. XW MOYWe1A ilea au. SULLIVAN ENGINEERING GROUP, 'LLC a' = - \ PREPARED DRAINAGE OVERLAY INFORMATION TO BASE PLAN PREPARED HY MERRIMACK-ENGINEERING. SUM�1+�Is YWf CpIRr/Ilan.eN.CrtYI m .� �1a' �� a�s� tt `•.. m+Arb funr a,ar wwfwn 7 vuulnn M[xuvmo:v oAx TEMPORARY CON57RUCTiQN..ENTRAtJCE, ♦`'•'.\•�� na _ - (SEE CONSTRUCTION DETAIL) PL4N OF " s, � •`Y" SUBSURFACE SEWAGE X9?0 dL• SI'S= OVERACT.PUN �� ww � NORTH ANAOM, MASS. . xrn r•-rr As meyAw roe - SEE CONSTRUCTION DETAIL _n6t� fx CaROLE R. RESCA SHEET.FOR'DETAILED .ELEVATIONS 4 sews Ar +o u' wTn e�rc�r, FOR INFILTRATION FIELD n. oa r: ACNflLAL wwmaF AabtSSaaS" tuaoru ax ar�—" LOY 2A = TOTAL SITE DISTURBANCE 19,050 S.F./C.44 ACt REVISED: 1/24/18 r w C6 FAIW 8TREET V18� DATED 1/8/18 XMOVER, MASSACVUS= aTaca ter,�, CnCU NOTES -, ,�� _ rJ Alz mart m ar oaWec xrarm Axe/Kc oa aar,111o,4m aDsr. .slw Yunlrayq ta� \ - - '. _ Rj nmaK.u.etyma,.aoo:r a�"sun�roa AxDAevurt mm+lr�La,m rna mpex. IYt} - - _ reel a<smrti.rei ew4 n w[ausmlexts mix alor e••^ua - - - ] S ACf TIWta Y4'rIM[xf nnL'I wT cinex olr wfTw1 nC AURdfxr W - ' - PIn4 w M[d�dt A�en enw ums PL ALLOMlA - ' IJ�� r wmwr�P-R,ar nT rom Tiwr 81 tm• ♦„ 7.. 8� 7�.,./ - _ _ 'fin:a roL•aos Aaravmar Drrrexr. - . _ .. ! $. I - rJ Att roam xuu at wa arrAloxr ax tamxawa iuAOe um mu.xx+t wrLarmxr/wxrs ' _ -v. m . - 'eJ nAolrnrr.lem ewmm•wnu•aunr Lmu narnn sulK Arm aeeuax rr -ria'e¢�_ rJ Tlr wurnw or enrrMv Imewo.m t:mllrra w.s nvrsM rliar umaer nw,wa .. �� � SY ', - � � I '���(' - ,. ML raNlMatM SVAet RLflaxtllMC rDa YatlMNDirQ lAlpr 1x��er Afi '` T, .¢� LkldlVlO M[I!!6L/LIOe[WMf1m/CIfOM llRlf.IH[M9GN MIYR01 IfINL K MWIRm ' k \�> '\` '�It- TL xe - '' dumuY¢i M LR-ATanuroo so.l1GT ACYmut iefpx'Qy rAx JC rAefx. •� - � .. _YAB- . , +\�� eoJ. e Caxnua+Ga aruv.xaNY rrlL tlLAD.CroMrLA b Nai M A6VAXK W wo Lki YArmr �Y nrp apwlmKlx R IxA{enoaxrza INsr1GIWxT Ux paw, y - 1!J- L9C.J9lfl Ni 1N14r-eNlT IMIlcINx3 41A �36 5�. - ruk iNtl�1YIC[A'uLL 1l whwLo�Iia RAm ar 31u CPNfievarttW oONfI.ICY. S l a2 A MYMVhIK ailui eC w:U'LD WM waNtl+C uMAIMI Y.IrC v[tlK dwV WALD _ C8N+43.402 f•W_ "4''� uwm xeru Ma .u;nwWm un ew mxunor d:rApxerr r oomea . -.1Q0% �•i \ �c 1+�\ r 1 LIMIT OF WATERSHEDIaJ !a rwvAn Irw a'nr.mmwr IW n.xmr swr rwuc wnv me nmrunn rrm svrua wmnn.aa R.er nu mma. i! \ �t e4}ew vtrwma rpm xmxN Jam pr ext�mo sneon Yr l - !JJ 1NIt 115r0I MI AFL MAYIw1f AkD Gdl-AxD.UL MI.Uunnl rRa[ml� I 1 sW LL aF Ixa Ay IxRxorO Ip R M eNL WxrpaYwkL eirn mLL s, Mxpu ..rr,�� } 0 3uLrls/0 1Mt NIWIRf LL Du1vsAL 91'sMftlAH TLIYWC JYG Gne ' x�r �' •nn' - sorW Nx n�l 11 ��t '. .+n'42. � I A ! - !eJ�e mlt•v rml•mrwrm rmtmv rut ul[c Coll�N1A'tmrx 1vArrMNm nnraenex xxTAC mK la �� em marvD.wn PxLii lMm7RsP-ft,D DETaN CALCULl7(f NS „re a r �, "'>< 1 ! .. x\ �°• Cr larcsnr nmelu.ae-- rnrcwc aLaM.1i l `am r r ^` _ ewiu w.larr-warm.A�ida✓a.r...i 7_nwYr. . • '�. t `� \ _ 't 1l44IE/-Uw-/rx-Mr R.wIAe uauam_ \,; � t L wL�elaxvaa4r�rr.-3,[lR.d.mnRJr.mrmm \ ♦ \ � v„xe LhXa Paenarm Ixp a� Rr wu - qe - 't`�I „ r ROPCSEO INFlLTRA770N FIELD . - iUm..ls�, ' p(��• I (rl..>z'IaDE x Aa'cDNc) caus�57K a7 INFlI WICK a UNITS ✓�}_ � (SEE DETAIL SHE •.[{/�� Re COL LEV EIQVRE ROOF AREA OF HOUSE VIA 4'HOPE ROOF DRA.N3 7EmpoRARY CONSTRUCTION ENTRANCE a LOT 28 T- (sEE caNSTRucncN Oc7All). �.. ralws,Aai sr. 5t 4 .,d 17.43 DOR PUN - n'I" - ..vt �'*'� `� I - 'ad'xl"xx min't„n`°�.ttc:'iav°adr•w.�u q - —"- SULLIVAN - s „ '� ' ENGINEERING- GROUP, LLc SEE GONSTRUC710N DETAIL. NFORMADCDRA0N.8AS PLAN OVERLAYCE MAN OF SHEET FOR DETAILED ELEVATIONS PREPARED BY MERRlMACK ENGlNEERfNG SUBSURFACE SEiiAGE DISPOSAL SYSTZU FOR INFILTRATION M .ELD NORTH ANDOVER, MASS. sal, a d - CAROLE-R. R£SCA mm rLa JOHN=araerr LOT 29 — TOTAL' SITE DISTURBANCE aeurnsmpRx mrca�la/es OVERA - 2 a,`3 C S.F./C,55 A G± Ycm Asunaes wP f .A ror— svaorasmN mr III so . .. .. PLAN x2' .cure ar vtwmroa seua r•.aD REVISED: 1/24/18 r e-Ir .vx ear s.ax.AlY9LLr Ifflumcr AGnagnm$$UM - 66 PARS ST= DATED: 1/8/1 8 AND01+$R MASSICHU51M 01$10 sxarr r pr z The following guidelines are inherent within the Erosion and Sediment Control Plan as applicable: a) Minimize total area of disturbance and minimize unnecessary clearing and grading from all construction sites. Clearing and grading shall only be performed within areas needed to build the project, including structures, utilities, roads, recreational amenities, post- construction stormwater management facilities, and related infrastructure. b) Keep stormwater runoff velocities low. The removal of existing vegetative cover during development and the resulting increase in impermeable surface area after development will increase both the volume and velocity of runoff. These increases must be taken into account when providing for erosion control. c) Protect disturbed areas from stormwater runoff. Best management practices can be utilized to prevent water from entering and running over the disturbed area. Diversions and other control practices intercept runoff from higher watershed areas, store or divert it away from vulnerable areas, and direct it toward stabilized outlets. d) Placement of structural practices in floodplains must be avoided to the degree practicable. e) Site plans should ensure that existing vegetation is preserved where possible and that disturbed portions of the site are stabilized. Use of impervious surfaces for stabilization should be avoided. f) Prior to any land disturbance activities commencing on the site, the developer shall physically mark limits of no land disturbance on the site with tape, signs, or orange construction fence, so that workers can see the areas to be protected. The physical markers shall be inspected daily. g) Appropriate erosion and sediment control measures shall be installed prior to disturbance and maintained in accordance with the manufacturer"s specifications and good engineering practices to ensure they perform as intended. Sediment in runoff water shall be trapped and retained within the project area. Wetland areas and surface waters shall be protected from sediment. h) Erosion and Sediment Control measures used shall be chosen based on the goal of minimizing site disturbance from installation of such measures. i) Sediment trapping and settling devices shall be employed to trap and/or retain suspended sediments and allow time for them to settle out in cases where perimeter sediment controls (e.g., silt fence and hay bales) are deemed to be ineffective in trapping suspended sediments on-site. Sediment basins shall also be used to minimize peak rate of runoff in accordance with the Massachusetts Stormwater Standards. j) BMPs to be used for infiltration after construction shall not be used as BMPs during construction unless otherwise approved by the Board. Many infiltration technologies are not designed to handle the high concentrations of sediments typically found in construction runoff, and thus must be protected from construction related sediment loadings. k) Sediment shall be removed once the volume reaches '/ to Y2 the height of a hay bale. Sediment shall be removed from silt fence prior to reaching the load-bearing capacity of the silt fence which may be lower than % to Y2 the height. 1) Sediment from sediment traps or sedimentation ponds shall be removed when it reaches a depth of six inches. m) On and off-site material storage areas, including construction and waste materials, shall be properly protected and managed. n) Erosion and sediment controls shall be coordinated with the sequence of grading, development and construction operations; control measures shall be in effect prior to commencement of each increment/phase of the process and control measures from prior phases shall continue to be maintained until the site is stabilized; o) Land disturbance activities exceeding two acres in size shall not be disturbed without a sequencing plan that requires stormwater controls to be installed and the soil stabilized, as disturbance beyond the two acres continues. Mass clearings and grading of the entire site should be avoided. Prior to any construction on the site, applicant shall submit a construction phasing plan to the Planning Department for review and approval. p) Soil and other materials shall not be stockpiled or redistributed, either temporarily or permanently, in locations or in such a manner as would cause suffocation of tree root systems; q) Topsoil shall be stripped from disturbed areas, stockpiled in approved areas and stabilized with temporary vegetative cover if it is to be left for more than thirty (30) calendar days; perimeter sediment controls shall be installed around each area of stockpiled topsoil. r) Soil stockpiles must be stabilized or covered at the end of each workday. Stockpile side slopes shall not be greater than 2:1. All stockpiles shall be surrounded by sediment controls. s) Projects must comply with applicable Federal, State and local laws and regulations including waste disposal, sanitary sewer or septic system regulations, and air quality requirements, including dust and debris control. t) A tracking pad shall be constructed at all entrance/exist points of the site to reduce the amount of soil carried onto roadways and off the site. u) Dust shall be controlled at the site. v) On the cut side of roads, ditches shall be stabilized immediately with rock rip-rap or other non-erodible liners, or where appropriate, vegetative measures such as sod. w) All graded areas beyond the Street Right-of-Way shall be covered with four (4") inches of topsoil and planted with a native species of vegetative cover, sufficient to prevent erosion; x) Temporary seeding, mulching or other suitable stabilization methods shall be used to protect exposed soil areas during construction; as feasible, natural vegetation shall be retained and protected; during the months of October through March, when seeding may be impractical, an anchored mulch or sod shall be applied as approved by the Planning Board or by its Designee; diversions and/or prepared outlets may be required in critical areas during construction. y) Permanent seeding shall be undertaken in the spring from March through May, and in late summer and early fall from August to October 15. During the peak summer months and in the fall after October 15, when seeding is found to be impractical, appropriate temporary mulch shall be applied. Permanent seeding may be undertaken during the summer if plans provide for adequate mulching and watering. z) Permanent vegetation and erosion control structures, as necessary, shall be installed preferably immediately after construction is completed but otherwise no later than the first full spring season immediately thereafter; they shall comply with the erosion and sedimentation vegetative practices recommended by the U.S. Soil Conservation Service; aa)Native species shall be used for re-vegetation; bb)Slopes (greater than 3:1) shall be protected from erosion by limiting clearing of these areas in the first place or, where grading is unavoidable, by providing special techniques to prevent upland runoff from flowing down a steep slope and through immediate stabilization to prevent gullying. Offsite runoff shall be diverted from highly erodible soils and steep slopes to stable areas. cc) Interim and permanent stabilization measures shall be instituted on a disturbed area immediately after construction activity has temporarily or permanently ceased on that portion of the site. Two methods are available for stabilizing disturbed areas: mechanical (or structural) methods and vegetative methods. In some cases, both are combined in order to retard erosion. dd)Temporary sediment trapping devices must not be removed until permanent stabilization is established in all contributory drainage areas. Similarly, stabilization shall be established prior to converting sediment traps/basins into permanent (post-construction) stormwater management facilities. All facilities used as temporary measures shall be cleaned prior to being put into final operation. ee)AII temporary erosion and sediment control measures shall be removed after final site stabilization. Disturbed soil areas resulting from the removal of temporary measures shall be permanently stabilized within 30 days of removal. Construction Storm Water Pollution Prevention Plan Land Disturbance Permit Chapter 160 — Stormwater Management & Erosion Control Bylaw Lot 1A (Tax Map 107A Lot 294) Lot 1 B (Tax Map 107A Lot 46) Lot 2A (Tax Map 107A Lot 293) Lot 2B (Tax Map 107A Lot 28) Located off of Mill Road & Johnson Street, North Andover I PreparedJOHN D. B� Sullivan Engineering Group, L C S,tJLLIVAMlf P.O. Box 2004 CIVIL E Woburn, MA 01888 , °4� 1 (781) 854-8644 �a� UAV Prepared For: TKZ, LLC 1665 Great Pond Road North Andover, MA 01845 (978) 685-5179 November 1.6, 2017 TABLE OF CONTENTS Page INTRODUCTION Background......................................................................................................... 4 SWPPPContent................................................................................................... 435 SWPPP COORDINATOR AND DUTIES................................................................... 5 FACILITY DESCRIPTION SiteLocation....................................................................................................... 6 ConstructionType................................................................................................. 6 Existing Site Conditions.......................................................................................... 6 SitePlan............................................................................................................. 6 IDENTIFICATION OF POTENTIAL.STORM WATER CONTAMINANTS SignificantMaterial Inventory.................................................................................. 7 Potential Areas for Stonn Water Contamination............................................................. 7 A Summary or Available Storm Water Sampling Data...................................................... 7 g STORM WATER MANAGEMENT CONTROLS Temporary and Pennanent Erosion Control Practices....................................................... 10 Construction Practices to Minimize Storm Water Contamination............... Coordination of BMPs with Construction Activities............ ............... I 1 i MAINTENANCE INSPECTION PROCEDURES Inspections......................................................................................................... 12 EmployeeTraining. .............................................................................................. 12 Certification......................................................................................................... 13,14 i Appendix A: INSPECTION LOGS 2 LIST OF TABLES 1 Potential Construction Site Storm Water Pollutants 2 Locations of Potential Sources of Storm Water Contamination LIST OF FIGURES Portion of Town of North Andover Assessor Map showing subject properties I • Registry Plan of Land showing the creation of the 4 single family lots • Site Development Plan for Lot IA+Lot 113 by Merrimack Engineering Services dated 7/28/17 • Subsurface Sewage Disposal Plan for Lot 2A • Subsurface Sewage Disposal Plan for Lot 213 4 i 3 1.0 INTRODUCTION 1.1 Background In 1972,Congress passed the Federal Water Pollution Control Act(FWPCA),also known as the Clean Water Act(CWA),to restore and maintain the quality of the nation's waterways.The ultimate goal was to make sure that rivers and streams were fishable,swimmable,and drinkable. In 1987,the Water Quality Act(WQA)added provisions to the CWA that allowed tie EPA to govern storm water discharges from construction sites. On March 10,2003,EPA published the final notice for General Permits for Storm Water Discharges from Construction Activities Disturbing 1 Acre or Greater.The general permit includes provisions for development of a Storm Water Pollution Prevention Plan(SWPPP)to maximize fie potential benefits of pollution prevention and sediment and erosion control measures at construction sites. Development,implementation,and maintenance of the SWPPP will provide TKZ,LLC(general contractor)with the framework for reducing soil erosion and minimizing pollutants in storm water during construction of each building lot.T'he SWPPP will; Define the characteristics of tie site and the type of construction which will be occurring; Describe the site plan for the facility to be constructed; Describe the practices that will be implemented to control erosion and the release of pollutants in storm water; Create an implementation schedule to ensure that the practices described in this SWPPP are in fact implemented and to evaluate the plan's effectiveness in reducing erosion, sediment, and pollutant levels in storm water discharged from the site;and ¢: Describe the final stabilization/termination design to minimize erosion and prevent storm water impacts after construction is complete. 1.2 SWPPP Content Tliis SWPPP includes the following: Identification of the SWPPP coordinator with a description of this person's duties; 4 Identification of the storin water pollution prevention team that will assist in implementation of the SWPPP during construction. Description of the existing site conditions including existing land use for the site(i.e.,wooded areas,open grassed areas, pavement,buildings,etc.),soil types.at the site,as well as the location of surface waters which are located on or next to the site (wetlands,streams,rivers,lakes,ponds,etc.); Identification of the body of water(s)which will receive runoff from the construction site,including the ultimate body of water that receives the storm water; Identification of drainage areas and potential storm water contaminants; Description of storm water management controls and various Best Management Practices(BMPs)necessary to reduce erosion, sediment and pollutants in storm water discharge; Description of the facility monitoring plan and how controls will be coordinated with construction activities;and a Description of the implementation schedule and provisions for annendment of the plan, 2.0 SWPPP COORDINATOR AND DUTIES The construction site SWPPP coordinator for the facility is Mr.Thomas Zalnoruiko(phone number:(978)685-5179 with TKZ, LLC,(general contractor).Mr.Zahoruiko's duties include the following: Implement the SWPPP plan with the aid of the SWPPP team; Oversee maintenance practices identified as BMPs in the SWPPP; Implement and oversee employee training; Conduct or provide for inspection and monitoring activities; i i i Identify other potential pollutant sources and make sure they are added to the plan; r i Identify any deficiencies in the SWPPP and make sure they are corrected;and Ensure that any changes in construction plans are addressed in the SWPPP. f g 5 gP G 3.0 I+ACILITY DESCRIPTION 3.1 Site Location The construction site is comprised of four building lots referenced as Lot 1A(Tax Map 107A Lot 294),Lot 1 B(Tax Map 107A Lot 46),Lot 2A(Tax Map 107A Lot 293),and Lot 2B(Tax Map 107A Lot 28). The building lots are located at the southerly intersection of Mill Road and Johnson Street in North Andover,MA. Presently three of the lots are undeveloped and one lot(Lot 213)has an existing single family house with an address of 865 Johnson Street,North Andover. 3.2 Construction Type The project will consist of four(4)single family dwellings constructed with wooden frames. Individual septic systems have been designed and approved for each lot. Driveways will be paved. 3.3 Existing Site Conditions The present site consists of three undeveloped lots and one lot unproved by an existing single family house(#865 Johnson Street). This property was subdivided on March 28,2017 into four lots,with three(3)of the lots being 1.3 acres and one(1)of the lots being 1 acre. There are wetlands on the southerly portion of the properties and the wetland line location has been approved by the North Andover Conservation Commission. 3.4 Site Plan Site plans are attached showing property boundaries,the proposed location of the houses,paved driveway locations,underground drainage infiltration units(Lot IA+Lot 111),septic system components(all lots),wetland resource areas(and associated protective buffers),and proposed site grading. 2.2 Acres(of the full 4.9 Acre site)will be temporary disturbed during construction activities. The majority of the site runoff will flow towards the wetland resources areas at the southerly portion of the site. The existing Douse(865 Johnson Street)will be razed. Two of the lots(Lot IA+Lot IB)have proposed construction activity within 100 feet of a bordering vegetated wetland. Lot 2A and Lot 2B have all proposed work outside of the 100 foot wetland buffer zone. Each lot has an approved septic System design. Lot IA and Lot 113 have a drainage infiltration field proposed to collect/recharge roof runoff. Erosion control barriers,soil stockpile areas,and temporary construction rip-rap driveway entrances are shown for each site. 6 4.0 IDENTIFICATION OF POTENTIAL,STORM WATER CONTAMINANTS The purpose of this section is to identify pollutants that could impact storm water during construction of the facility. 4.1 Significant Material Inventory Pollutants that result from clearing,grading,excavation,and building materials and have the potential to be present in storm water runoff are listed in Table 1.This table includes information regarding material type,chemical and physical description,and the I specific regulated storm water pollutants associated with each material. 4.2 Potential Areas for Storm Water Contamination The following potential source areas of storm water contamination were identified and evaluated: Cleared and graded areas; Building construction; Construction site entrance and asphalt driveway constriction; All undisturbed areas. Table 2 presents site specific information regarding storm water pollution potential from each of these areas. { 4.3 A Summary of Available Storm Water Samlrling Data No storm water sampling data is available for the site. 4.4 Waterbody Receiving Stormwater Discharge Based on the most current USGS map for this area, the stormwater runoff for this site drains to the wetland resource area at the southerly portion of the properties and to a lesser extent to an unnamed brook further south of the wetland resource area. 7 Table 1 Potential Construction Site Storm Water Pollutants Trade Nantc Material Chemical/Physical.Description(1) . storm Water Pollutants(]) Pesticides (insect icides,fungicides, Various colored to colorless liquid, Chlorinated hydrocarbons, herbicides,rodenticides) powder,pellets,or grains organophosphates,carbamates, arsenic Fertilizer Liquid or solid grains Nitrogen,phosphorous Plaster White granules or powder Calcium sulphate,calcium carbonate,sulfuric acid Cleaning solvents Colorless, blue, or yellow-green Perchloroethylene,methylene liquid chloride,trichloroethylene, petroleum distillates Asphalt Black solid Oil,petroleum distillates Concrete White solid Limestone,sand Glue,adhesives White or yellow liquid Polymers,epoxies Paints Various colored liquid Metal oxides, stoddard solvent, talc,calcium carbonate,arsenic g Curing com ounds Cream white liquid Naphtha [ Wastewater from construction Water Soil,oil&grease,solids equipment washing a Wood preservatives Clear amber or dark brown liquid Stoddard solvent, petroleum distillates, arsenic, copper, chromium Hydraulic oil/fluids Brown oily petroleum hydrocarbon Mineral oil Gasoline Colorless,pale brown or pink Benzene,ethyl benzene,toluene, petroleum hydrocarbon x lenc,MTBE Diesel Fuel Clear,blue-green to yellow liquid Petroleum distillate, ail & ease,naphthalene,x lens !, Kerosene Pale yellow liquid petroleum Coal oil,petroleum distillates hydrocarbon Antifreeze/coolant Clear green/yellow liquid Ethylene glycol, propylene glycol, heavy metals (copper, lead,zinc Erosion Solid Particles Soil,Sediment (1) Data obtained from MSDSs when available 8 Table 2 Locations of Potential Sources of Storm Water Contamination Drainage Potential Storm Water Potential Pollutants Potential Problem Area Contamination Point Builduig construction Plaster,cleaning solvents,asphalt,concrete, Accidental spills of paints and cleaning solvents, paints,hydraulic oil,gasoline,antifreeze, leaking hydraulic oil and antifreeze from construction soil erosion,fertilizer,pesticides,glue equipment,gasoline and diesel fuel spills while adhesives,curing compounds,wood fueling construction equipment,erosion of exposed preservatives,kerosene and stockpiled soils,and degradation of scrap dry wall can potentially contaminate storm water.Asphalt chemicals can be released to storm water if a rain event occurs before curing is complete. Construction driveways Asphalt,hydraulic oil,gasoline,antifreeze, Leaking hydraulic oil and antifreeze from clearing, soil erosion,fertilizer,pesticides grading and asphalt application construction equipment.Gasoline and diesel fuel spills while fueling construction equipment,and erosion of exposed and stockpiled soils.Asphalt chemicals can be released to storm water if a rain event occurs before curing is complete.Tracking of soil into the road through the construction site entrance. Tree removal area Soil erosion,fertilizer,pesticides Ruts caused by logging equipment can fill with water, preventing complete re-vegetation. 4 All undisturbed Areas None No storm water related issues with this completely � ve elated area C 6 k&�S gk F II} 1. I 9 5.0 STORM WATER MANAGEMENT CONTROLS The purpose of this section is to identify the types of temporary and permanent erosion and sediment controls that will be used during construction activities.The controls will provide soil stabilization for disturbed areas and structural controls to divert runoff and remove sediment. '1'liis section will also address control of other potential storm water pollutant sources such as construction materials(paints,concrete dust,solvents,plaster),waste disposal,control of vehicle traffic,and sanitary waste disposal. 5.1 TtMporary and Permanent Erosion Control Practices A list of best management procedures(BMPs)has been developed and tic locations of these BMPs are shown on the approved Site Development plan. A number of the BNWs included in this plan have been developed to serve as post-construction storm water controls. Site Wide Control Measures To prevent soil from washing into the undisturbed areas of the site,the following BMPs will be implemented: Silt fencing(or construction snow fencing)will be placed along the perimeter of the entire site to be cleared and graded before any clearing or grading takes place. Combination of various forms of siltation control are proposed at various locations throughout the site based on proximity to the wetland resource areas(See the"Erosion and Sediment Control"plan) t Designated Soil stockpiling areas are shown f it j' A temporary construction entrance is shown at cacti proposed driveway entrance 5.2 Construction Practices to Minimize Storm Water Contamination All waste materials will be collected and stored in a securely lidded metal dumpster. All trash and construction debris from the site will be deposited in the dumpster.The dumpster will be emptied as needed offsite. No construction materials will be buried on-site.All personnel will be instructed regarding the correct procedure for waste disposal. All sanitary waste will be collected from the portable units a minimum of two times per week. Good housekeeping and spill control practices will be followed during construction to minimize storm water contamination from petroleumproducts, fertilizers,paints,and concrete.Good housekeeping practices for each drainage area are list below. 10 To prevent potential storm water contamination,due following BMPs will be implemented: All vehicles on site will be monitored for leaks and receive regular preventive maintenance to reduce the chance of leakage. Petroleum products will be stored in tightly scaled containers which are clearly labeled. Spill kits will be included with all fueling sources and maintenance activities. Any asphalt substances used onsite will be applied according to the manufacturer's recommendation. All spills will be cleaned up iurunediately upon discovery. Spills large enough to reach the storun system will be reported to the National Response Center at 1-800-424-8802. Concrete trucks will not be allowed to wash out or discharge surplus concrete or drum wash water on the site. Any asphalt substances used onsite will be applied according to the manufacturer's recommendation. Sanitary waste will be collected from portable units a minimum of two times a week to avoid overfilling, A covered dumpster will be used for all waste materials. All paint containers and curing compounds will be tightly sealed and stored when not required for use.Excess paint will not be discharged to the storm system,but will be properly disposed according to the manufacturer's instructions. Materials and equipment necessary for spill cleanup will be kept in die temporary material storage trailer onsite. I Equipment will include,but not be limited to,brooms,dust pans,mops,rags,gloves,goggles,kitty litter,sand,saw dust, gand plastic and metal trash containers. Spray guns will be cleaned on a removable tarp. E 5.3 Coordination of BKPs with Construction Activities f Structural BMPs will be coordinated with construction activities so die BMP is in place before construction begins. 'flue following BMPs will be coordinated with construction activities: The temporary perimeter controls (various forms of erosion control barriers) will be installed before any clearing and grading begins.(See Erosion and Sediment Control Plan for forms of erosion control&locations) Once construction activity ceases in an area, that area will be stabilized with permanent seed or other permanent landscaping means. The temporary perimeter controls will not be removed and shall be maintained until all construction activities at the site are complete and soils have been stabilized. 11 6.0 MAINTENANCEANSPECTION PROCEDURES 6.1 Inspections Visual inspections of all cleared and graded areas of the constriction site will be performed daily and within 12 hours of the end of a storm with rainfall amounts greater than 0.5 inches, The Town of North Andover Planning Department may require weekly inspections and reports to be generated based on past practices. The inspection will be conducted by the SWPPP coordinator or his designated stormwater team members.The inspection will verify that the structural BMPs described in Section 5 of this SWPPP are in good condition and are minimizing erosion.The inspection will also verify that the procedures used to prevent storm water contamination from construction materials and petroleum products are effective. The following inspection and maintenance practices will be used to maintain erosion and sediment controls: i Built up sediment will be removed from erosion control barriers when it has reached one third the barrier height, Silt fences will be inspected for depth of sediment,for tears,to see if the fabric is securely attached to the fence posts,and to see that the fence posts are firmly in the ground. d Temporary and permanent seeding will be inspected for bare spots,washouts,and healthy growth. 4 The maintenance inspection report will be made after each inspection.A copy of the report form to be completed by the SWPPP coordinator is provided in Appendix A of this SWPPP.Completed forms will be maintained otn-site during die entire construction project.following construction,the completed forms will be retained at the general contractors office,TKZ,LLC,for a nmininnun of 1 year. If construction activities or design modifications are made to the site plan which could impact storm water, this SWPPP will be amended appropriately. The amended SWPPP will have a description of the new activities that contribute to the increased pollutant loading and the planned source control activities. 6.2 Empi flee Training Employees will be educated about the requirements of the SWPPP. This will include background on the components and goals of the SWPPP and hands-on-training in erosion controls,spill prevention and response,good housekeeping,proper material handling, disposal and control of waste,equipment fueling, and proper storage, washing, and inspection procedures. All employees will be trained prior to their first day on the site. 12 6.3 Certification Owner Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry ofthe person or persons who manages the system,or those persons directly responsible for gathering the information,the information submitted is,to the best ofmy knowledge and belief,true,accurate,and complete.I am aware that there are significant penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. &L-"� I Name Title -2- Date r I. 13 Contractor Certification(TKZ,LLC-General Contractor) I certify under penalty of law that I understand the terms and conditions of the general National Pollutant Discharge Elimination System(NPDES)permit that authorizes the storm water discharges associated with industrial activity fro e construction site identified as part of this certification. #M�'e -� A Title Date l 14 Appendix A Inspection Logs Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form To be completed every 7 days and within 24 hours of a rainfall event of 0.5 inches or more Inspector: Date: Inspector's Qualifications: Days since last rainfall: Amount of last rainfall: Stabilization Measures Date Since Date of Drainage Last Next Stabilized Area Disturbance Disturbance (Yes/No) Stabilized With Condition I' Stabilization required: TO be performed by: On or before: 16 Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form Driveway Entrances : Does Much Sediment is the Gravel Clean or is it Get Tracked on to pilled with Sedunent? Road? Maintenance required for driveway entrance(s): To be performed by: On or Before: i t 3 B qB 6 G 1 I i 17 Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form Perimeter Structural Controls: Date: Silt Fence Drainage Area Has Silt Reached is Fence Properly is There Evidence of Perimeter 1/3 of Fence Height? Secured?.. Washout.or.Over- topping? o Maintenance required for silt fence: € f To be performed by: On or before: Y l I 18 Storm Water Pollution Prevention Plan Inspection and Maintenance Report Form Changes required to the pollution prevention plan: Reasons for changes: I certify under penalty of law that this document and all attachments were prepared truder my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system,or those persons directly responsible for gathering the information,the information submitted is,to the best of my knowledge and belief,true,accurate,and complete.I am aware that there are signification penalties for submitting false information,including the possibility of fine and imprisonment for knowing violations. Signature: Date: i I 19 3 3 i Town of North Andover, MA November 16, 2017 l� V41 11 .C'0014 1(1J.A-C106�0����uP� 1d7.A-d1a1 t 10/.A•0140 10/.A•001 a%elOf 1.0/.A-0061 y j 0 u 5 y t{ 1 l l' 10/.A-0063 07,A-00f ss �� n� r4 107.A-00l27�i,J i /�� 10Y.A•t104!ry frY ullrela>107,C-0001 i 10TA-0044 ` 07,C�•C1087 t, ����i a qti<;� � 4 ,-' 10TA adz 1 a'rdG' 00 I 0,110 1e0IS 107,A-0046 � 107.A;408E 1 7,A-02 J 1 1P07 // , A•0021i , � � r, 1 � P ai4�i urr ii%; /`r" ld7 A 0092 i 107C-0070 Nr�// 10TA-0293 na' '� � t ! �rwu 107 A-0089 i ✓X 107. 0157 10 j — (f 91 0C 1 rcy, i 10TA-0056 ' 10TA-0156 f � 10TC-0092 ii// wrUH 1 Ak.0090 /!�drr,� gj/qkrrlta 107,C-0093 14o r l f 1 ar 107.A Od93 u/l t �r " �+ �'3P107 1" 193 fC 107. 1t1°7.A 014 r l rrr/aid x ,P�.wr r„a;�ff,nvsn Property Inlormation Property ID 10TA-0294-0000A Loccallon 0 MILL ROAD Owner RESCA,CAROLE R MA[) FOR REFERENCE ENC:E'i ONLY NOT A LEGAL DOCUMENT I Town of North Andover,MA makes no claims and no warranties,expressed or Implied,concerning the validity or accuracy of the GIS data presented on this map. i I I f -75 $ 0 SALEM R�\ i 1.ipPOORAPHIG DAl-BASC IE 1DEB N.4.Y.D.c-QA 1S40 V GRS BENCHMARK IS NAIL SC-,W LP 64]3{I'UP),ELCVAIION=7091O 2,iCE 10wN OF NORTH ANDoNSR ASSESSORS MAP g:CTA JOT/7E G 107F aE T AFNMA STD^ , DCL9 BOOK#973 PAGE Y31 C.N.D.R 0.LC PLAN 15740A FCCORCCO w.'[H BOOK 1134 RAGS#9a E.l.D.R_B.AND PLAN la O3'EN V.A b y' \•r FOR 9TL. WLTLANDS KUNFATCD BY LEAN BASLANES,CA.'.DANES 1550GA-ES, DUNSTABLC,MA A",,1,:0:4. �e 4 Z A-20NL 0*_ - L' 30 CT 1S F WHICH RLWIH 'v"%3D'SIDE ANC TDRS ANnp[KOftl: -r n/r ffrr n/F 30'ROAR YARD Al➢ALK:.t50'EFONiALL a3,5Ep 9C.F'.A01. 1411AMA nOKKO,v: :'w y`c� —ALL�� i ( FT;:LN CiMEAu AND 75TT LBA. .-WPC NS8.36'3YW 5.THLRE ARC N0—IANCES GRANTED ON M1S SITE. 146.79' nil B'21',O"W r G.PLAN INTSNT, k"r' ✓.--.':f 9.54'_ Aa 0 W—t25.35' .N19'D7'4y'W A,7A-_ 1— a'W Nt4'3R'4'W— ,RS.aN' - - R7 A' _ Wy CXI^SANG LOT 1 I.ID BCCDUC LOT nA&12 WI,N A POTIONOF LOT 1 bCING C It YU TO LOT.'B.C 15TNG LOT rS TO RLCOMC LDT 7A d:D W ri A A'NZ VON OF LOT 7D BONO CONVE+ED FROM LOT I. -- w"-� . rtI.sV T..�.�_••- _ �-___.__ C4.LMEwTA� 111.E u - LOT 1 A �,rA ,1 N007 V r ARCA=A3.S50 S.F. n%t APPROVAL UNDER THE SUBOIMSION cONTNDL @�C• =1.OD00 AC. - tm LAW NOT FCOUIFCD In.SCGSTRY useF CBAe34,B37 S.F. O ur1 a34,a NDRTN ANDO1rR PLANN;NG BOARD o _ `TM ]0�A °w:W EDT 7oN fet OF:C TL 46 4% . " /ICAi(TItct 00o STONL WALL �9 n _«_ C a u���, AIlKL SS1AATn N�o00o Now cw FouM[RLr ry"'.c ?' ���. /`� LOT 1 (2.D9 ACJ 1 �, W.FD. WOCO(RAMC DWELLING f r �' C.N.O,P..D. [S:E%rvORM p15TR1tT R.CU;n?t'OF 0£fD5 1.. "I ^�_ THE PLnNN=kG BOARD'5 ENDOPS[IMEN:OF THC PLAN TF TOTAL FFOV tAGC '1 �L S"TI-Tt om AS NOT REWIRING APPROVAL UNDCR THE SUBDIVISION C3A COn1wU0G BUILDABLE AREA ,. TM Opp�n v+� _11 CONTROL EAW IS NOT A DETERMSNARON AS TO s_F. ;BOARS 1CCT 'f i TL Zp F4 ffi:� �aa CONFORMAkCE WTH THE 701 OF NORTH ANOOVER AL ACFLS i I �[ Sr,>t ` ?OWNC BYLAW AND RECULATIDNs_ wF WJOD rRAkC �,C LOT 7� D 1pr �✓p yp W a ANY TQWNYMAA r/` LOT 1 (2.4a Ac.) �G,I;f �"'1� Bw:.DINGS - .L YOwN Lc fF FAr P"+, TO Bf ARLA-53,G5T S.F. \ F F { C ,� REMOVED --Sa84 AC. I ?a eft^.`✓ CBA�4I.374 SF. I s ,y a I '£aSB. QfyD1.=,,, �r m100X "THIS PLAN CONFORMS TO THE RUL7i AND J, �O'.. F+�' a,-h REGLLATiONS OF THE R(GSTRY OF DEED,- sa 0 T 2A ` °Rao �4 vt. I AREA=37,192 S.F. ry :j CU-50.172 S.F, 1 .^•-�,Tl"y, ti - j1`I: .T3 wme s1007[ w S f 10l F !'..�1E'PYIIJ'1'ia, STn NSKI.R.L-S DATE 1 yp M '� - - _` LOT 28 V�`=._. Lie o"� �`: � .I,��, ARGR57.3W S.T.ACL : N CBA=AS.A02 S.F. C�i'i r k TOOK - o s7E7i'71. �'Ory: ,� =Wyo•T', / y% �m, `" y�S RF PLAN OF LAND N 1N k, IT �,-e,w . . r NORTH ANDO VE9 MASSACHUSE= P?MPA=MR CAROLS R PWCA 15 y.^.7+JJ. ' `.._ saa J011HJA]N 3l7=T "e sss's3.2s'e NORTH AMIOVSK ttASSACH![SA77L'ata+5 L SA,lfi 36'E 17.43' Sr 1•-40' IIINIII MERNMACK ENGINEERING SERVICES 06 PARK STR8i7 At==t Atl=CXEM= 02VIO PWNL` (DJB)473-MM FAX:")475-14AB PYAM-AW&EYCIAOLCCY LOT 1 A + LOT =1 B — SITE PLAN D: RIP—RAP C0NSTRUOT -J3 f. LIMIT' . '-, WORK LINE . ec z:c S - *. _ u€afw..x caSc cam-e.e'kc s- s. T �.-.-_��� rn.-,��.»��n n L rx BU D 2 p LTM l _ ,� D I C H ...�... �.�: - :1 A�fE T � M U L ,- PROMEt. QI L STOCK -I LE AREA ` / ' DgANACE , :TRU jTURE­;-- R- [, WLas4S.50 55 i AREA �.wgr<ew ron _ s � ., •, '. z na++ a a;Rv �x a GtICC 4 SAAMMfD thF URATdR 2Lt BER DETAIL \ .•. `- „__e x c +c+�-aca -,ea .x a= WETLAND ,�_ ''' t // e t` ram ` : i cc..-.•er. fo n.wG e -si*" t t AREA VIM -K s h. [or>E naw•a,a++.n r cecm. - ' '"' _ r �+:++.au`aru awcs+t'�'tc ro�+c r.•.,rztuu+r, `.0 a,,`..F�n €- - gM�1''sy r+oAtl.v3.4�:mutt �g�• f - (k LOT I t 74,41 ee t {XAt?tfiT FlLTFR fi1X_K a ROOF DRAIN tlVf7t TRtTOR F;nD END S€GT;•CW MN t 't,. y` r•`t , ! a%� - f'i` i � 7' . tm 1rcl7om r PcRr OFT ap a71 t.C+- j a €_I� �1� �`Y -`�j. :.s K - - .�1r t'ZrLVPl;S�rN 3 ' f ' PLAN OF, LAND "5,--� ff NORTH.ANDOVER M4. y LOTS Ili & IB AM,i ROAD 3= t AaLL I Ro s _ ART HIIR RESCA JUT-%= 7-M-17 TOTAL DISTURBANCE �FOTAL DTURBAN 3 `• ICAM1 ' I LOT 1B 29,625 S.F.f0.7 ACt "m cx MvGLYsmwvc s�xV& LOT 1A 29,625 S.F.f0.5 ACt �-=' i'° " i (mil<n-ss�s rcc. «s-l"d LOT 2A — SITE PLAN LEGEND: = RP—RAP CONSTRUCTION ENTRANCE LOCUS MAP t ; _ I+07S = STAKED SILT WETLAN = 12" DIAMETER " �a — SOIL STOCKPILE # -E �``� ,. r .pia `�•"� � .; �..LOT ZA LOT i� \\� y f �L 'v • xaC.S aC� ,is3+tS +'Ce.t K". ^S�`s.�ff a+T'Ya�>�#"K -._ a' +4 Ki GCS t +.e+hn•-.n:v.+i.F+4'.3 T+':"Y,a t. - t+ - .#� J ur.-a-ra+�•+a tt+sue c.t f Y � + TOTAL DISTURBANCE e PL" OF SUBSURFACE SEWAGE I)MOSAL SYS'T" Owitku PLAN LOT 2A 19,050 S.F.f 0.44 ACf _. NORTH ANDO MASS. Aux n CAROa R. RE504 A • tft!Gar,�YgY ;1>_aFig;, f dN Jt R L i ff r 3 0 xcrs.of LOT 2B - SITE PLAN LEGEND: LOCUS MAP = RIP-RAP CONSTRUCTION ENTRANCE = LIMIT OF WORK LINE moms = STAKED SILT FENCE 12" DIAMETER MULCH SOCK _STOCKPILE AREA 4i 1.7 Al kDESIGN CALCULATIONS N e LOT 28%. PLAN _41 TOTAL DISTURBANCE PL" OF SVRSTWACE SEWAGE=5POSU SYSTEM . LOT 2B 23,980 S.F./O.55 AC± NORM MZIOM, MASS CAROLE R. RESCA OVERALL PLAN ofelo The following guidelines are inherent within the Erosion and Sediment Control Plan as applicable: a) Minimize total area of disturbance and minimize unnecessary clearing and grading from all construction sites. Clearing and grading shall only be performed within areas needed to build the project, including structures, utilities, roads, recreational amenities, post- construction stormwater management facilities, and related infrastructure. b) Keep stormwater runoff velocities low. The removal of existing vegetative cover during development and the resulting increase in impermeable surface area after development will increase both the volume and velocity of runoff. These increases must be taken into account when providing for erosion control. c) Protect disturbed areas from stormwater runoff. Best management practices can be utilized to prevent water from entering and running over the disturbed area. Diversions and other control practices intercept runoff from higher watershed areas, store or divert it away from vulnerable areas, and direct it toward stabilized outlets. d) Placement of structural practices in floodplains must be avoided to the degree practicable. e) Site plans should ensure that existing vegetation is preserved where possible and that disturbed portions of the site are stabilized. Use of impervious surfaces for stabilization should be avoided. f) Prior to any land disturbance activities commencing on the site, the developer shall physically mark limits of no land disturbance on the site with tape, signs, or orange construction fence, so that workers can see the areas to be protected. The physical markers shall be inspected daily. g) Appropriate erosion and sediment control measures shall be installed prior to disturbance and maintained in accordance with the manufacturer"s specifications and good engineering practices to ensure they perform as intended. Sediment in runoff water shall be trapped and retained within the project area. Wetland areas and surface waters g shall be protected from sediment. h) Erosion and Sediment Control measures used shall be chosen based on the goal of minimizing site disturbance from installation of such measures. i) Sediment trapping and settling devices shall be employed to trap and/or retain suspended sediments and allow time for them to settle out in cases where perimeter sediment controls (e.g., silt fence and hay bales) are deemed to be ineffective in trapping suspended sediments on-site. Sediment basins shall also be used to minimize peak rate l of runoff in accordance with the Massachusetts Stormwater Standards. j) BMPs to be used for infiltration after construction shall not be used as BMPs during construction unless otherwise approved by the Board. Many infiltration technologies are a not designed to handle the high concentrations of sediments typically found in construction runoff, and thus must be protected from construction related sediment loadings. k) Sediment shall be removed once the volume reaches % to % the height of a hay bale. Sediment shall be removed from silt fence prior to reaching the load-bearing capacity of the silt fence which may be lower than % to '/ the height. 1) Sediment from sediment traps or sedimentation ponds shall be removed when it reaches a depth of six inches. m) On and off-site material storage areas, including construction and waste materials, shall be properly protected and managed. n) Erosion and sediment controls shall be coordinated with the sequence of grading, development and construction operations; control measures shall be in effect prior to commencement of each increment/phase of the process and control measures from prior phases shall continue to be maintained until the site is stabilized; o) Land disturbance activities exceeding two acres in size shall not be disturbed without a sequencing plan that requires stormwater controls to be installed and the soil stabilized, as disturbance beyond the two acres continues. Mass clearings and grading of the entire site should be avoided. Prior to any construction on the site, applicant shall submit a construction phasing plan to the Planning Department for review and approval. p) Soil and other materials shall not be stockpiled or redistributed, either temporarily or permanently, in locations or in such a manner as would cause suffocation of tree root systems; q) Topsoil shall be stripped from disturbed areas, stockpiled in approved areas and stabilized with temporary vegetative cover if it is to be left for more than thirty (30) calendar days; perimeter sediment controls shall be installed around each area of stockpiled topsoil. r) Soil stockpiles must be stabilized or covered at the end of each workday. Stockpile side slopes shall not be greater than 2:1. All stockpiles shall be surrounded by sediment controls. s) Projects must comply with applicable Federal, State and local laws and regulations including waste disposal, sanitary sewer or septic system regulations, and air quality requirements, including dust and debris control. i t) A tracking pad shall be constructed at all entrance/exist points of the site to reduce the amount of soil carried onto roadways and off the site. u) Dust shall be controlled at the site. v) On the cut side of roads, ditches shall be stabilized immediately with rock rip-rap or other non-erodible liners, or where appropriate, vegetative measures such as sod. l E k w) All graded areas beyond the Street Right-of-Way shall be covered with four (4") inches of topsoil and planted with a native species of vegetative cover, sufficient to prevent erosion; x) Temporary seeding, mulching or other suitable stabilization methods shall be used to protect exposed soil areas during construction; as feasible, natural vegetation shall be retained and protected; during the months of October through March, when seeding may be impractical, an anchored mulch or sod shall be applied as approved by the Planning Board or by its Designee; diversions and/or prepared outlets may be required in critical areas during construction. y) Permanent seeding shall be undertaken in the spring from March through May, and in late summer and early fall from August to October 15. During the peak summer months and in the fall after October 15, when seeding is found to be impractical, appropriate temporary mulch shall be applied. Permanent seeding may be undertaken during the summer if plans provide for adequate mulching and watering. z) Permanent vegetation and erosion control structures, as necessary, shall be installed preferably immediately after construction is completed but otherwise no later than the first full spring season immediately thereafter; they shall comply with the erosion and sedimentation vegetative practices recommended by the U.S. Soil Conservation Service; aa)Native species shall be used for re-vegetation; bb)Slopes (greater than 3:1) shall be protected from erosion by limiting clearing of these areas in the first place or, where grading is unavoidable, by providing special techniques to prevent upland runoff from flowing down a steep slope and through immediate stabilization to prevent gullying. Offsite runoff shall be diverted from highly erodible soils and steep slopes to stable areas. cc) Interim and permanent stabilization measures shall be instituted on a disturbed area immediately after construction activity has temporarily or permanently ceased on that portion of the site. Two methods are available for stabilizing disturbed areas: mechanical (or structural) methods and vegetative methods. In some cases, both are combined in order to retard erosion. dd)Temporary sediment trapping devices must not be removed until permanent stabilization is established in all contributory drainage areas. Similarly, stabilization shall be established prior to converting sediment traps/basins into permanent (post-construction) stormwater management facilities. All facilities used as temporary measures shall be cleaned prior to being put into final operation. I i I i ee}Ali temporary erosion and sediment control measures shall be removed after final site stabilization. Disturbed soil areas resulting from the removal of temporary measures shall be permanently stabilized within 30 days of removal. 4