Mystic River Watershed Stormwater Retrofits Woburn, Massachusetts 30% Concept Plans June 2021

MYSTIC RIVER WATERSHED STORMWATER RETROFITS WOBURN, MASSACHUSETTS 30% CONCEPT PLANS JUNE 2021

Sheet List Table WOBURN Sheet Number Sheet Title 1 COVER 2 GENERAL NOTES 3 EXISTING CONDITIONS 4 DEMO & ESC PLAN 5 SITE PLAN 6 GRADING & DRAINAGE PLAN 7 DETAIL GRADING PLAN 8 STREAM RESTORATION PLAN 9 CONSTRUCTION DETAILS 10 PLANTING DETAILS North

WINN ST MASSACHUSETTS SCALE 1" = 150000' PROJECT SHERIDAN ST AREA BURLINGTON WOBURN GENERAL NOTES: 1. THIS PLAN SET IS FOR CONCEPTUAL DEVELOPMENT ONLY AND NOT FOR CONSTRUCTION. 2. SITE INFORMATION: PLAT: 41 LOT: 16 ADDRESS: 75 BEDFORD ROAD ZONING DISTRICT: RESIDENTIAL 1

Plan Set: MYSTIC RIVER WATERSHED SITE STORMWATER RETROFITS WOBURN, MASSACHUSETTS

Prepared For: Mystic River Watershed Association 20 Academy St Ste 306 H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN CN.dwg Arlington, MA 02476 North (781) 316-3438

Prepared By: Horsley Witten Group, Inc. WOBURN Sustainable Environmental Solutions SCALE 1" = 20000' SITE www.horsleywitten.com Headquarters SCALE 1" =1000' 112 Water Street, 6th Floor 55 Dorrance Street, Suite 200 90 Route 6A 113 Water Street, R2 Boston, MA 02109 Providence, RI 02906 Sandwich, MA 02563 Exeter, NH 03833 (857) 263-8193 voice (401) 272-1717 voice (508) 833-6600 voice (603) 658-1660 (617) 574-4799 fax (401) 439-8368 fax (508) 833-3150 fax Registration: Project Number: Revisions 21008 1 2 Sheet Number: 3 1 of 10 DRAFT 4 NOT FOR 5 Drawing Number: 6 CONSTRUCTION 7 - 1C

last modified: 06/30/21 printed: by ml Rev. Date By Appr. Description last modified: 06/28/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN CN.dwg 1. 19. 18. 17. 16. 15. 14. 13. 12. 11. 10. 1. MECHANICAL ENGINEERSANDOTHERPROJECTINVOLVEDWITHTHEPROPOSEDNEWCONSTRUCTIONTODEVELOPA GENERAL DEMOLITIONNOTES: GENERAL CONSTRUCTIONNOTES: 3. 7. 5. 3. SUITABLE DEMOLITIONPLAN,WHICHWILLALLOWTHEFACILITIESTOREMAININOPERATIONDURINGENTIRETYOFCONSTRUCTION. CONSTRUCTION LIMITS.ITISTHECONTRACTOR'SRESPONSIBILITYTOCOORDINATEWITHOWNER,PROJECTARCHITECT, 9. 7. 5. 6. 2. 22. 21. 20. 8. 6. 2. 4. THIS PLANSETDOESNOTINCLUDEDETAILS&SPECIFICATIONSFORALLDEMOLITIONWORKREQUIREDWITHINTHEPROPOSED 4. IT ISTHERESPONSIBILITYOFCONTRACTORTOESTABLISHANDMAINTAINALLCONTROLPOINTSBENCHMARKSDURING IMPORT ONLYCLEANMATERIAL.MATERIALFROMANEXISTINGORFORMER INSTALLED ANDEXISTINGUTILITIESFOUNDDURINGCONSTRUCTIONFORTHEPREPARATIONOFAS-BUILTPLAN. INACCURATELY SHOWN.THECONTRACTORMUSTMAINTAINACCURATERECORDSOFLOCATIONANDELEVATIONALLWORK IMMEDIATELY CONTACTANDCOORDINATEWITHTHEENGINEEROWNERIFANYDEVIATIONORALTERATIONOFWORK PRIOR TODEMOLITIONOCCURRING,ALLEROSIONCONTROLDEVICESAREBEINSTALLED. DEMOLITION OFTHEEXISTINGFACILITIES. MAINTAIN CONTINUOUSACCESSANDOPERATIONFORSURROUNDINGFACILITIES,ASDEEMEDBYTHEOWNER,ATALL TIMESDURING REFER TOUTILITYPLANSANDSPECIFICATIONSFORALLWORKWHICHREQUIRESUTILITIESBEREMOVED,RELOCATE OR FEES ANDCHARGES. FEES WHICHARETOBEPAIDTHEUTILITYCOMPANYFORTHEIRSERVICES.CONTRACTORISRESPONSIBLEPAYINGALL REMOVE ALLDEBRISFROMTHESITEANDDISPOSEOFINAPROPERLEGALMANNER. LIMITED TO,ROADWAYS,PARKINGAREAS,ISLANDS,BITUMINOUSCONCRETE,CEMENTGRAVEL,CURBS, LOCATION APPROVEDBYALLGOVERNINGAUTHORITIES,OFEXISTINGSITEELEMENTSANDSTRUCTURESINCLUDING,BUTNOT UNLESS OTHERWISENOTED,THECONTRACTORISRESPONSIBLEFORRELOCATION,DEMOLITION,REMOVALANDDISPOSAL,INA BLOWN ORWATERCARRIEDDEBRISFROMTHESITE. DE-ICING CHEMICALSONTHEACCESSROADWAY. BURIAL OFANYSTUMPS,SOLIDDEBRIS,AND/ORSTONES/BOULDERSONSITEISPROHIBITED.DONOTUSEROADSALTOROTHER DO NOTWASHANYCONCRETETRUCKSONSITE.REMOVEBYHANDCEMENTORDEBRISLEFTINTHEDISTURBED LEAVES THESITE.PROMPTLYREMOVEALLDEMOLITIONDEBRISFROMSITETOANAPPROVEDDUMP REGULARLY INSPECTTHEPERIMETEROFPROPERTYTOCLEANUPANDREMOVELOOSECONSTRUCTIONDEBRISBEFOREIT RESTORE ALLSURFACESEQUALTOTHEIRORIGINALCONDITIONAFTERCONSTRUCTIONISCOMPLETEPERSPECIFICATIONS.LEAVE MANAGEMENT REGULATIONS. DUST, SEDIMENTATIONCONTAINMENT,ANDTRENCHWORK. PROVIDE ALLCONSTRUCTIONSERVICEINACCORDANCEWITHAPPLICABLELAWSANDREGULATIONSREGARDINGNOISE,VIBRATION, UNLESS OTHERWISEINDICATEDONTHEDRAWINGSAND/ORINSPECIFICATIONS,ALLSITECONSTRUCTIONMATERIALSAND BEEN COMPLETEDBYTHEENGINEER.RE-STAKINGOFPREVIOUSLYSURVEYEDSITEFEATURESISRESPONSIBILITY(INCLUDING MAINTAIN ALLGRADESTAKESSETBYTHESURVEYOR.ARETOREMAINUNTILAFINALINSPECTIONOFITEMHAS MASSACHUSETTS' LOCATION OFALLCONTROLPOINTSANDBENCHMARKS. PLAN ACCORDINGLY. RESPONSIBLE FORALLTRENCHSAFETYINCLUDINGANYLOCALAND/ORSTATEPERMITSREQUIREDTHEWORK.IFTHIS UTILITIES. EXCAVATIONREQUIREDWITHINTHEPROXIMITYOFEXISTINGUTILITYLINESMUSTBEDONEBYHAND. DURATION OFTHEPROJECT.REPAIRANYDAMAGETOEXISTINGUTILITYLINESORSTRUCTURESINCURREDDURINGCONSTRUCTION ENGINEER ASSUMESNORESPONSIBILITYFORDAMAGESINCURREDASARESULTOFUTILITIESOMITTED,INCOMPLETELYOR EXCAVATION WORKTOREQUESTEXACTFIELDLOCATIONOFUTILITIES.THECONTRACTORMUSTRESOLVECONFLICTSBETWEEN NOT TOBERELIEDUPONASBEINGEXACTORCOMPLETE.VERIFYTHELOCATIONOFALLUNDERGROUNDUTILITIESAND RECORDS OFVARIOUSUTILITYCOMPANIES,ANDWHEREVERPOSSIBLE,MEASUREMENTSTAKENINTHEFIELD.THISINFORMATIONIS PRIOR TOINSTALLINGANYPORTIONOFTHESITEWORKWHICHWOULDBEAFFECTED. EXISTING OROTHERPROPOSEDIMPROVEMENTS.IFANYCONFLICTSAREDISCOVERED,NOTIFYTHEOWNERANDENGINEER MAKE ALLNECESSARYCONSTRUCTIONNOTIFICATIONSANDAPPLYFOROBTAINPERMITS,PAY REQUIRED POLICEDETAIL. RESPONSIBLE FORTHECOSTOFPOLICEDETAILANDCOORDINATINGWITHLOCALORSTATEDEPARTMENTALL UTILIZE ALLPRECAUTIONSANDMEASURESTOENSURETHESAFETYOFPUBLIC,PERSONNELPROPERTYDURING PROPOSED ONTHESEDRAWINGSISREQUIRED. RESPONSIBILITY OFTHECONTRACTOR. COORDINATE WITHRESPECTIVEUTILITYCOMPANIESPRIORTOTHEREMOVALAND/ORRELOCATIONOFUTILITIES. OBTAIN ALLPERMITSREQUIREDFORDEMOLITIONANDDISPOSAL. SUITABLE COMPACTEDFILLMATERIALPERSPECIFICATIONS. CONSTRUCTION. ALLFACILITIESTOBEREMOVEDAREUNDERCUTSUITABLEMATERIALANDBROUGHTGRADEWITH CONDITIONS MUSTBEVERIFIEDBYTHECONTRACTORINADVANCEOFWORK. OTHER LANDSCAPINGAND/ORNATURALFEATURES.WHEREASTHEPLANSDONOTSHOWALLLANDSCAPEFEATURES,EXISTING COLLECT SOLIDWASTESANDSTOREINASECUREDDUMPSTER.THEDUMPSTERMUSTMEETALLLOCALSTATEWASTE STANDARD SPECIFICATIONS COST) OFTHECONTRACTOR. SITE LAYOUTSURVEYREQUIREDFORCONSTRUCTIONMUSTBEPROVIDEDBYTHECONTRACTORANDPERFORMEDA CONSTRUCTION INCLUDINGBENCHMARKLOCATIONSANDELEVATIONSATCRITICALAREAS.COORDINATEWITHTHEENGINEER CONTINGENCY PLAN310CMR40.0000 SAWCUT ALLTRENCHWORKWITHINEXISTINGPAVEMENTASINDICATEDONTHEDRAWINGS.BACKFILLANDCOMPACT COORDINATE ALLTRENCHINGWORKWITHINROADWAYSWITHTHEPROPERLOCAL&STATEAGENCY.CONTRACTORIS OPERATIONS ATNOCOSTTOTHEOWNER.CONTRACTORISRESPONSIBLEFORALLRELATEDREPAIROF GOVERNING PERMITTINGAUTHORITYINTHE STRUCTURES INTHEFIELDPRIORTOSTARTOFCONSTRUCTION.CONTACTAPPROPRIATEUTILITYCOMPANY,ANY START CONSTRUCTIONVERIFYTHATTHEPROPOSEDIMPROVEMENTSSHOWNONPLANSDONOTCONFLICTWITHANYKNOWN SAFETY LIGHTING,CONES,POLICEDETAILAND/ORFLAGMENASDETERMINEDNECESSARYBYTHE CONSTRUCTION INACCORDANCEWITHOSHASTANDARDS,INCLUDINGTHEINSTALLATIONOFTEMPORARYFENCINGBARRICADES, THE UTILITYCOMPANIESCONCERNINGPORTIONSOFWORKWHICHMAYBEPERFORMEDBYCOMPANYANDANY WALKWAYS, SIDEWALKS,BERMS,FENCES,BOLLARDS,POSTS,PLANTINGBEDS,TREES,SHRUBS,UTILITIES,DRAINAGESTRUCTURES THE SPECIFICATIONS] THE SURVEYORFORALLSITESURVEYWORK. WORK ASINDICATEDONTHEDRAWINGANDINSPECIFICATIONS. WORK ISREQUIREDTOOCCUROUTSIDETHEAGREEDUPONHOURSOFOPERATIONFORFACILITY,CONTRACTORMUST THE CONTRACTORMUSTMAINTAINALLEXISTINGUTILITIESINWORKINGORDERANDFREEFROMDAMAGEDURINGENTIRE THE PROPOSEDUTILITIESANDFIELD-LOCATEDREPORTANYDISCREPANCIESTOENGINEERIMMEDIATELY. THE LOCATIONAND/ORELEVATIONOFEXISTINGUTILITIESANDSTRUCTURESASINDICATEDONDRAWINGSAREBASED THE OWNERANDENGINEER. AREA. ALL TRUCKSLEAVINGTHESITEMUSTBECOVERED. ALL AREASNOTDISTURBEDBYCONSTRUCTIONINTHEIRNATURALSTATE.TAKECARETOPREVENTDAMAGESHRUBS,TREES, HIGHWAY ANDBRIDGES2020EDITION,THESUPPLEMENTALSPECIFICATIONSDATEDJUNE30,2020). METHODOLOGIES ARETOCONFORMTHEMOSTRECENTVERSIONOF AFTER ONECOMPLETE12-MONTHCYCLE AS DETERMINEDBYTHEENGINEER,WITHINWARRANTYPERIOD,CONTRACTORISREQUIREDTOREMOVE,PATCHANDREPAVE ALL EXISTINGCONDITIONSSHOWNAREAPPROXIMATEANDBASEDONTHEBESTINFORMATIONAVAILABLE.PRIORTO ALL FEESINCLUDINGPOLICEDETAILSANDPOSTBONDS,IFNECESSARY,ASSOCIATEDWITHTHESAME,COORDINATE ALL SITEWORKTOCOMPLETETHISPROJECTASINDICATEDONTHEDRAWINGSANDINSPECIFICATIONSISSOLE ABANDONED ANDLEFTINPLACE. AND ALLOTHERSTRUCTURESSHOWNNOTWITHINCONSTRUCTIONLIMITS,WHERENEEDED,TOALLOWFORNEW AT THEENDOFCONSTRUCTION,REMOVEALLCONSTRUCTIONDEBRISANDSURPLUSMATERIALSFROMSITE 1. NOTE:

2. PUBLIC ROADWAY REGISTEREDPROFESSIONALLANDSURVEYOR.THECONTRACTORISRESPONSIBLEFORCOORDINATINGWITH INSTALLATION OFPAVEMENT SUB-BASEISTOBEGIN. SEE SITEPLANFORLOCATION &ACTUALDIMENSIONS STONE CONSTRUCTIONENTRANCE(S)TOREMAINUNTIL . PERFORMATHOROUGHINSPECTIONOFTHEWORKPERIMETER.COLLECTANDREMOVEALLMATERIALS SEE SITEPLAN PLAN VIEW R= TOSUIT (15' MIN.) (30' MIN.) VARIES (THE COMMONWEALTHOFMASSACHUSETTSDEPARTMENTTRANSPORTATIONSPECIFICATIONSFOR A A WILL NOTBEACCEPTED. . CONSTRUCTION ENTRANCE CITY , AND"DIGSAFE"(1-888-344-7233)ATLEASTTHREEBUSINESSDAYSPRIORTOANY SEE SITEPLAN (15' MIN.) VARIES NOT TOSCALE FILTER FABRIC NON -WOVEN IFSETTLEMENTOCCURSDUETOINADEQUATECOMPACTION, 21E MASSACHUSETTS DEPARTMENTOFTRANSPORTATION SECTION A-A SITEASDEFINEDBYTHE 1-1/2" TO3" CLEAN STONE 12" CITY. THE CONTRACTORIS MASSACHUSETTS [ASINDICATEDIN 1. STORMWATER FACILITYOPERATION&MAINTENANCE: 5. 3. OUTLINED BELOWDURINGCONSTRUCTIONANDUNTILSUCHTIMETHATTHEROADWAYSASSOCIATEDUTILITIESAREACCEPTEDBY 2. THE OWNERANDENGINEER. THE CONTRACTORISRESPONSIBLEFORPROPERINSPECTIONANDMAINTENANCEOFALLSTORMWATERMANAGEMENTFACILITIESAS 4. 1. 17. 16. 15. 14. 13. 12. 11. 10. 1. BASIC CONSTRUCTIONSEQUENCE: 1. GENERAL GRADINGANDDRAINAGENOTES: LANDSCAPE ARCHITECTANDSUBMITAPROPOSEDCONSTRUCTIONSEQUENCEFORREVIEWAPPROVALPRIORTOCONSTRUCTION. 3. 9. 8. 7. 6. 5. 3. 3. 7. 6. 5. 2. 2. THE FOLLOWINGCONSTRUCTIONSEQUENCEISTOBEUSEDASAGENERALGUIDELINE.COORDINATEWITHOWNER,ENGINEERS,AND 2. 4. 4. DEWATERING: INSPECT ANDRESTORE/CLEANALLFACILITIES(INLETS,MANHOLES,INFILTRATION ENTIRE DURATIONOFTHECONSTRUCTIONPROJECTANDFIRST3MONTHSAFTERTOENSUREPROPER FACILITY OPERATIONANDMAINTENANCEREQUIREMENTS.MAINTAINAWORKINGCOPYOFTHESWPPPONSITEATALLTIMES. REFER TOTHESTORMWATERPOLLUTIONPREVENTIONPLAN(SWPPP)FORADDITIONALINFORMATIONPERTAINING REMOVE ANDDISPOSEALLSEDIMENTDEBRISTOAPRE-APPROVEDLOCATION. DESCRIBED BELOWOFSEDIMENTANDDEBRISPRIORTOTHEOWNER'SACCEPTANCE. SPECIFIC MAINTENANCEREQUIREDDURINGCONSTRUCTION: STABILIZATION. AT AMINIMUMINSPECTMONTHLYANDAFTERSTORMEVENTSGREATERTHANOREQUALTO1"OFRAINFALLASNECESSARYFORTHE IMMEDIATELY. FINISH PERMANENTSTABILIZATION.COMPLETESTORMWATERMANAGEMENTAREASEEDINGANDPLANTINGAFTERTHE INSTALLED ANDALLPIPECONNECTIONSCOMPLETE. INSTALL DRAINAGEPIPES,MANHOLES,CATCHBASINS,ANDUNDERGROUNDSTRUCTURES.BEGINWORKAT INSTALL TEMPORARYCONVEYANCEDEVICES(SWALES,CHECKDAMS,PIPES,ETC.)ASNECESSARYTOCONVEYRUNOFF FROM THEAREAOFPROPOSEDROADWAYSANDSTORMWATERMANAGEMENTAREASSTOCKPILEDINAPPROVED INSTALL TEMPORARYCONSTRUCTIONENTRANCESINLOCATIONSINDICATEDONDRAWINGS.NOOTHERARETOBE IF DEWATERINGISNECESSARYDURINGCONSTRUCTION,IMPLEMENTTHEPROPERESCMEASURESONSITETOPREVENTEROSION PRIOR TOANYDEWATERING,THEDEWATERINGPLANMUSTBEAPPROVEDBYENGINEER. DISTURBANCE INDICATEDBYTHESILTFENCEORSTRAWBALES. REQUIRED. INSTALLTHEBASINASINDICATEDONDRAWINGSIFSONOTED,OTHERWISEBASIN(S)WITHINLIMITOF DISCHARGE TOBASINPREVENTSEDIMENTSFROMLEAVINGTHECONSTRUCTIONAREA.INSTALLADDITIONALBASINSIF PROVIDE ADEWATERINGPLANDEPICTINGPROPOSEDLOCATIONFORREVIEWANDAPPROVAL.DIRECTTHEPUMP [PER SPECIFICATIONSOR] PROPERLY INSTALLED.THISINCLUDESTHESTABILIZATIONOFALLDISTURBEDAREASCONTRIBUTINGTODRAINAGESYSTEMS PAVEMENT. PAVINGWILL PROPOSED ELEVATIONSARESHOWNTOFINISHPAVEMENTORGRADEUNLESSNOTEDOTHERWISE. PAVEMENT.. PROPOSED GRADECONTOURINTERVALSSHOWNAT1FOOT. EXISTING GRADECONTOURINTERVALSSHOWNAT1FOOT. ENGINEER TOAPPROVETHEREMOVALOFALLTEMPORARYSOILEROSIONANDSEDIMENTATIONCONTROLMEASURESFOLLOWING DRAINAGE STRUCTURESANDPIPESATTHEENDOFCONSTRUCTIONREMOVEALLACCUMULATEDSEDIMENTSIN REGULATIONS. ROADSANDPARKINGAREASARENOTTOBEPAVEDUNTILTHEENTIREPERMANENTDRAINAGESYSTEMHASBEEN BEGIN ROADANDPARKINGCONSTRUCTIONPERSITEPLANSINACCORDANCEWITHAPPLICABLESTATELOCAL REGULATIONS ASSOONPOSSIBLE. UPON COMPLETIONOFUNDERGROUNDDRAINAGEINSTALLATION,PLACECOMPACTEDGRAVELFOUNDATIONANDROUGHGRADE PERMANENTLY SEEDALLDISTURBEDAREASOUTSIDEOFTHEAREATOBEPAVED. ENTRY INTOTHEDRAINAGENETWORK.TAKEPARTICULARCARETOPROTECTUNDERGROUNDSTRUCTURESFROMSEDIMENT. UN-STABILIZED AREASARESTABILIZEDWITHSTONESUB-BASEORVEGETATION.INSTALLSEDIMENTBARRIERSATALLPOINTSOF PRACTICABLE. COORDINATEWORKTOMINIMIZETIMESOILSAREUN-STABILIZED. BEGIN ROUGHGRADINGFORROADWAYS&PARKINGAREAS.BRINGTOPROPERELEVATIONSASSOON LOCATIONS. TOPSOILSTOCKPILESMUSTBEPROTECTEDBYASEDIMENTBARRIER. BEGIN CLEARINGANDGRUBBINGTHEAREASOFROADWAYSSTORMWATERMANAGEMENTAREAS.TOPSOILISTOBESTRIPPED NECESSARY TOCONTROLSITERUNOFFANDSEDIMENTS.TEMPORARILYSTABILIZE/SEEDPERMANENTSTORMWATERMANAGEMENT EXCAVATE ANDROUGHGRADETHEPROPOSEDSTORMWATERMANAGEMENTAREASANYADDITIONALTEMPORARYBASINS BEGIN CLEARINGTHESITEASREQUIRED. USED TOGAINACCESSTHESITEBYANYCONSTRUCTIONORDELIVERYVEHICLES. LIMIT OFWORKTOEXTENDBEYONDTHESEDIMENTATIONBARRIERS/LIMITDISTURBANCEASINDICATEDONDRAWINGS PLACE SEDIMENTATIONBARRIERSASINDICATEDONDRAWINGSANDSTAKEDOUTINTHEFIELD.UNDERNOCIRCUMSTANCESIS OF 80%STABILIZATION. STORMWATER MANAGEMENTAREAS.CONTRACTORMUSTINSPECTTHEDRAINAGENETWORKANDREPAIRANYDAMAGE SWEEP PAVEMENTTOREMOVEALLSEDIMENTS.REPAIRDRAINAGEOUTLETSANDBASINSASREQUIRED.CLEANFLUSHTHE COMPLETE ALLREMAININGPLANTINGANDSEEDING. CONSTRUCTION SEDIMENTATIONBASIN. CONTRIBUTING AREATOTHEBASINHASREACHEDAMINIMUMOF80%STABILIZATIONANDISNOLONGERREQUIREDAS SURVEY ANDSTAKECENTERLINEOFTHEPROPOSEDROADS,STORMWATERMANAGEMENTAREAS,DRAINAGELINES. SURVEY ANDSTAKETHEPROPOSEDLIMITOFDISTURBANCESEDIMENTATIONBARRIERS. OR SEDIMENTRUNOFF.THESEMEASURESCANINCLUDEDEWATERINGBAGS,TEMPORARYSTRAWBALES,SILTFENCES,SOCKS SUBSURFACE INVESTIGATIONORGEOTECHNICALREPORTSPREPAREDFORTHISSITE. THE ROADWAYS/PARKINGAREASINACCORDANCEWITHSITEPLANSANDAPPLICABLESTATELOCAL THE STORMWATERMANAGEMENTAREA(S)ANDDRAINAGENETWORKARETOBEPROTECTEDFROMSEDIMENTATIONUNTILALL THE STORMWATERMANAGEMENTAREASANDPROGRESSUP-GRADIENT.PROTECTDISCHARGEOUTLETSWITHRIP-RAPAPRONS. TREATMENT AREAS. AND/OR OTHERAPPROVEDDEVICESASINDICATEDINTHEDETAILS. A HIGHWATERTABLEISANTICIPATED.IFDEWATERINGREQUIREDDURINGEXCAVATION,TEMPORARILYLOWERTHE AND ANYSTORMWATERBASINFLOORSSIDESLOPES ALL DRAINAGESTRUCTURESANDPIPESMUSTBECONNECTEDTOTHESYSTEMPRIORINSTALLATIONOFANY ALL EARTHWORKANDSITEPREPARATIONMUSTBEDONEINSTRICTACCORDANCEWITHTHERECOMMENDATIONSOFANY ADJUST AND/ORCUTEXISTINGPAVEMENTASNECESSARYTOASSUREASMOOTHFITANDCONTINUOUSGRADEWITHNEW ALL CUTANDFILLSLOPESSHALLBE3:1ORFLATTERUNLESSOTHERWISENOTED. VEGETATIVE ESTABLISHMENTOFALLDISTURBEDAREASANDDETERMINEWHENTHECONTRIBUTINGAREAHASREACHEDAMINIMUM AREAS ASNECESSARYTOREDUCESIDESLOPEEROSIONANDSEDIMENTACCUMULATION. APPROVED BYTHE F. E. D. B. C. A. INFILTRATION RATESAREBEINGMET.IFSEDIMENTORORGANICDEBRISBUILD-UPLIMITSTHECAPABILITIES, INFILTRATION BASIN EXCESSIVE ACCUMULATIONOFSEDIMENTINTHEDRAINAGE SYSTEM.INSPECTTHEPIPESANDSTRUCTURESFOR PERIMETER AREAS,ANDSTREETPARKINGLOTSWEEPING UPONCOMPLETIONOFCONSTRUCTIONTOAVOID ROUTINE MAINTENANCE REMOVE THETOP6"ORGREATERANDSURFACEROTO-TILLEDTOADEPTHOF12".RESTOREBASINBOTTOM RIP-RAP SLOPEPROTECTION LITTER ORTRASH,ANDSTRUCTURALDETERIORATION.CLEANREMOVESEDIMENTFROTHESTRUCTURES(INCLUDING REGULARLY INSPECTALLEXISTINGANDPROPOSEDDRAINAGESTRUCTURESFORPROPEROPERATION,COLLECTION OF DRAINAGE STRUCTURES(INLETS,MANHOLES,CATCHBASINS,DIVERSIONSTRUCTURE,WATERQUALITYUNITS) SEDIMENT ACCUMULATIONANDPROPERFLOW. STABILITY ANDREMOVEANYBURROWINGANIMALS.RE-VEGETATE PERTHEPLANTINGDESIGNALLBARRENAREASWITHIN OPERATION. REMOVE ORIFICE STRUCTURES,WEIRWALLS,DRAINAGEINLETS,TRASHCHECKRACKS,VALVES,PIPES,ANDSPILLWAY CONSTRUCTED WETLANDSYSTEM COMPLETION OFCONSTRUCTION. SEDIMENT FOREBAY SUMPS) ASNECESSARY,ANDREPAIRWHENREQUIRED. THE EXTENTSOFFACILITY. THE SITEANYINVASIVEVEGETATIONENCROACHINGUPON THEPERIMETEROFFACILITY.CHECKEMBANKMENTSFOR TRASH CHECKRACKS,OUTLETSTRUCTURESANDSPILLWAY,FORPROPERFUNCTION.CLEANREPAIRANYCLOGGED THE FOREBAYANDPROPERLYDISPOSE,ASNECESSARY,TOLIMITCLOGGING.CLEANSEDIMENTFOREBAYSPRIOR OPERATION. FOR PROPERFUNCTION.CLEANANDREPAIRANYCLOGGEDOPENINGSIDENTIFIEDDURINGINSPECTIONS. ACCORDING TOORIGINALDESIGNSPECIFICATIONS. THE CONSTRUCTEDWETLANDASNEEDEDFORPROPEROPERATION. OPENINGS IDENTIFIEDDURINGINSPECTIONS. WOBURN CONSERVATIONCOMMISSIONANDDEPARTMENTOFENVIRONMENTALPROTECTION(DEP).

REMOVEANDREPLACEILL-ESTABLISHED,DEADORSEVERELY DISEASEDPLANTS. NOT BEALLOWED BY PUMPING.INSTALLADEWATERINGBASINASINDICATEDINTHEDETAILAND : : REGULARLYINSPECTTOENSUREPROPERFUNCTION.REMOVESEDIMENTBUILD-UPONTHEFLOOROF MONITOR ANDINSPECT SEDIMENT ORORGANICBUILD-UPFROMTHECONSTRUCTED WETLANDASNEEDEDFORPROPER : OTHERROUTINEMAINTENANCEINCLUDESTHEREMOVAL OFTRASHANDLITTERFROMPAVED : MONITOR,REGULARLYINSPECTANDREPAIRASNECESSARY. : MONITORANDINSPECT IFTHEDRAINAGESYSTEMFORPROPOSEDPAVEDAREAISNOTCOMPLETELYAND STRUCTURAL COMPONENTS,INCLUDINGWEIRWALLS,DRAINAGEINLETS,

FOR PROPEROPERATION.REMOVE STRUCTURAL COMPONENTSOFTHESYSTEM,INCLUDING

REGULARLY INSPECTTOENSURETHATDESIGN BASINS, STORMWATERMANAGEMENTAREASAS SEDIMENT ORORGANICBUILD-UPFROM

PRUNE ANDREMOVEFROM

FOR PROPER : MONITORAND 19. 18. 16. 15. 14. 13. 12. 11. 10. 1. EROSION &SEDIMENTCONTROLNOTES: 7. 9. 8. 6. 5. 3. 23. 22. 21. 20. 2. 4. INSTALLATION OFEACHNEWCATCHBASIN,INSTALLASILTSACKORAPPROVEDEQUIVALENT.INSPECTSACKSAFTER INSTALL ASILTSACKORAPPROVEDEQUIVALENTINEACHEXISTINGCATCHBASINRECEIVINGRUNOFFFROMTHESITE.UPON INSPECT EROSIONANDSEDIMENTCONTROLDEVICESSTABILIZEDSLOPESONAWEEKLYBASISAFTEREACHRAINFALL INSTALL ALLEROSIONANDSEDIMENTCONTROL(ESC)MEASURESASINDICATEDONDRAWINGSINCONSULTATIONWITHTHE FACILITIES INSTALLEDORAFFECTEDBYTHEPROJECT.REMOVESEDIMENTDEBRISCOLLECTEDWITHINTHESEFROM FOR SEDIMENTCONTROLDURINGCONSTRUCTION. PROPERLY DISPOSEOFSEDIMENTACCUMULATEDINANYPARTIALLYCONSTRUCTEDDEPRESSIONSORTEMPORARYBASINSUSED PRIOR TOTHEINSTALLATIONOFFILTERFABRICANDMEDIAWITHINPERMANENTSTORMWATERAREAS,REMOVE PROPERLY MAINTAINANDREPAIRALLEROSIONSEDIMENTATIONCONTROLDEVICESINATIMELYRESPONSIBLEMANNER FOR THEDURATIONOFPROJECTTOENSUREALLEROSIONANDSEDIMENTATIONCONTROLDEVICESAREPROPERLY PROVIDE ON-SITEORMAKEREADILYAVAILABLETHENECESSARYEQUIPMENTANDSITEPERSONNELDURINGCONSTRUCTIONHOURS PAVED AREASASNEEDEDTOREMOVESEDIMENTANDANYPOTENTIALPOLLUTANTSACCUMULATEDDURINGSITECONSTRUCTION. REMOVE ACCUMULATEDSEDIMENTFROMALLTEMPORARYPRACTICESANDDISPOSEOFINAPRE-APPROVEDLOCATION. DEPRESSIONS. THISALLOWSFORANOVER-DIGOFTHECOLLECTEDSEDIMENTFROMWITHINBIORETENTIONAREAPRIORTO ELEVATION ASSHOWNONDETAILSANDPLANSFORANYPARTIALLYCONSTRUCTEDSTORMWATERAREASORTEMPORARY DURING PROJECTCONSTRUCTION,PROVIDEASURFACEELEVATIONATMINIMUM1-FOOTABOVETHEBOTTOMOFMEDIA FULL OFSEDIMENT. NECESSARY INTHEFIELDBYENGINEER. REINFORCE TEMPORARYAREASHAVINGASLOPEGREATERTHAN4:1WITHEROSIONBLANKETSORAPPROVEDEQUALUNTILTHE DISTURBED AREASANDSLOPESMUSTNOTBELEFTUNATTENDEDOREXPOSEDFORLONGPERIODSOFTIMESUCHASTHEINACTIVE EVENT OF0.25INCHORGREATER.REPAIRIDENTIFIEDPROBLEMSWITHIN24HOURSTOENSUREEROSIONANDSEDIMENTCONTROLS ENSURE THENECESSARYEROSIONCONTROLDEVICESAREINSTALLEDANDFUNCTIONINGPROPERLYTOMINIMIZEFROM PHASE THESITEWORKINAMANNERTOMINIMIZEAREASOFEXPOSEDSOIL.IFTREESAREBECUTONSITE,CLEARANDGRUB REPLACE THECRUSHEDSTONEPADASNECESSARYTOMAINTAINITSSEDIMENTREMOVALEFFECTIVENESS. PROVIDE CONSTRUCTIONEXITSASINDICATEDONDRAWINGSTOSHEDDIRTFROMVEHICLETIRES.CLEANOR PROTECT THEADJACENTRESOURCEAREAFROMSEDIMENTATIONDURINGPROJECTCONSTRUCTIONUNTILACCEPTANCEBY PROJECT SITETHATNOCONSTRUCTIONACTIVITYISTOOCCURBEYONDTHELIMITOFWORKATANYTIMETHROUGHOUT EROSION CONTROLMEASURESASNECESSARYDURINGTHEENTIRECONSTRUCTIONPERIODOFPROJECT. EROSION ANDPREVENTSEDIMENTFROMLEAVINGTHESITE. DESIGNATE THESITECONSTRUCTIONFOREMANASON-SITEPERSONNELRESPONSIBLEFORDAILYINSPECTIONAND PERSONNEL, ANDANYOTHERPERTINENTSITEDOCUMENTATIONMUSTBERETAINEDFORAMINIMUMOF3YEARSFROMTHEDATE NOTICE OFTERMINATIONWITHNPDES.INACCORDANCE POLLUTION PREVENTIONPLAN(SWPPP) PRIOR TOTHESTARTOFCONSTRUCTIONANOTICEINTENT(NOI)MUSTBEFILEDWITH MAINTAINED ANDREPAIREDINATIMELYRESPONSIBLEMANNER.IFSITEWORKISSUSPENDEDDURINGTHEWINTERMONTHS MEDIA/FABRIC INSTALLATIONATTHECORRECTELEVATION. MORE THAN14DAYS BEST PROFESSIONALJUDGEMENTANDGOODCONSTRUCTIONPRACTICESWHENSCHEDULINGACTIVITIES MONITOR LOCALWEATHERREPORTSDURINGCONSTRUCTIONANDPRIORTOSCHEDULINGEARTHMOVINGOROTHER BEGINNING ANYLANDCLEARINGACTIVITYAND/OROTHERCONSTRUCTIONRELATEDWORK. KEEP THELIMITOFCLEARING,GRADINGANDDISTURBANCESTOAMINIMUMWITHINPROPOSEDAREACONSTRUCTION. MAINTAIN AMINIMUMSURPLUSOF100FEETEROSIONCONTROLBARRIER(SILTSOCKETC.)ONSITEATALLTIMES. MAINTENANCE OFALLSEDIMENTANDEROSIONCONTROLSIMPLEMENTATIONNECESSARYMEASURESTOCONTROL CONTROL DUSTBYWATERINGOROTHERAPPROVEDMETHODSASNECESSARY,DIRECTEDTHEENGINEER. CONTAIN ALLSEDIMENTONSITE.SWEEPEXITSFROMTHESITEASNECESSARYINCLUDINGANYTRACKEDSEDIMENTS. CONSTRUCTION ACTIVITIESWHICHLEAVELARGEDISTURBEDAREASUNSTABILIZED.IFINCLEMENTWEATHERISPREDICTED,USE ONLY THOSEAREASWHICHAREACTIVELYUNDERCONSTRUCTION.PROPERLYINSTALLTHESEDIMENTATIONCONTROLSPRIORTO OWNER &INCONFORMANCEWITHTHEORDEROFCONDITIONS. CONSTRUCTION PERIOD. CONSERVATION AGENT OF TERMINATION. ONSITE ATALLTIMES.FOLLOWTHESWPPPPROTOCOLFORSITEMAINTENANCE,INSPECTIONSANDPROPERDOCUMENTATIONUNTIL SITE RUNOFFANDSEDIMENT.ITWILLBETHERESPONSIBILITYOFCONTRACTORINCONSULTATIONWITHENGINEER, SIGNIFICANT STORMEVENTANDREMOVEEMPTYBEFORETHEYAREFULLOFSEDIMENT.DONOTALLOWINLETSTOREMAIN SITE ISPROPERLYSTABILIZED.TEMPORARYDIVERSIONORCONVEYANCESWALESMAYALSOBEREQUIREDIFDETERMINED SITE CONDITIONS. SURROUND THEPERIMETEROFSOILSTOCKPILESWITHSILTSOCKAND/ORFENCEASSHOWNONPLANSORREQUIREDBY THE PROJECTWORKPRIORTOOWNER'SACCEPTANCE. THE CONTRACTORISRESPONSIBLEFORINSPECTIONANDMAINTENANCEDURINGCONSTRUCTIONOFALLSTORMWATER THE CONTRACTORMUSTCONTINUETO TO SIZEANDCREATETHESEAREASINAPPROPRIATELOCATIONS. TEMPORARY DEPRESSIONSMAYBECONSTRUCTEDONANAS-NEEDEDBASISDURINGCONSTRUCTIONTOAIDINTHECAPTUREOF THE SITEPERIMETEREROSIONCONTROLSAREDESIGNATEDLIMITOFWORK.INFORMALLPERSONNELWORKINGON THE SITEEROSIONCONTROLDOCUMENTATION,WEEKLYINSPECTIONREPORTSCOMPLETEDBYDESIGNATED THE SITEHASBEENACCEPTEDBYOWNER.ATCOMPLETIONOFPROJECTCONTRACTOROROWNERMUSTFILEA WINTER SEASON.PROVIDEAPPROPRIATESTABILIZATIONPRACTICESONALLDISTURBEDAREASASSOONPOSSIBLEBUT ARE INGOODWORKINGORDER.RESETORREPLACEMATERIALSASREQUIRED. ANY IMPENDINGWEATHEREVENTS. 1. NOTES: 3. 2. 4. 1" REBAROREQUAL FOR BAGREMOVAL OVERFLOW APPROVED SLOTS OR FLOW FOLLOWING CONSTRUCTIONANDSITESTABILIZATION,COMPOSTMATERIALTOBEREMOVED MANUFACTURER'S REQUIREMENTS. OR DISPERSEDONSITE,ASAPPROVEDBYTHEENGINEER. SEDIMENT SILTSOCKTOBEFILLEDWITHLEAFCOMPOSTAND/ORWOODYMULCHPER SILT SOCKMANUFACTURERTOBESOXXORENGINEERAPPROVEDEQUAL. WATER ALL MATERIALTOMEETMANUFACTURER'SSPECIFICATIONS. WORK AREA DUMP LOOP EQUIV. PLAN VIEW FROM INLET HANDLES AFTERTHECONSTRUCTIONACTIVITYINTHATAREAHASTEMPORARILYORPERMANENTLYCEASED. ANDENGINEERBEFORE PROTECTED AREA TOBE LINEAL SPACING STAKE ON10' "SILT SACK"INLET PROTECTION SEDIMENT SILTSOCK PROVIDEPERSONNELANDEQUIPMENTEITHERONSITEORREADILYAVAILABLETO "SILT SOCK"COMPOSTTUBES REGARDINGALLEROSIONCONTROLMATTERS.MAINTAINAWORKINGCOPYOFTHESWPPP STAINLESS STEEL LOCKING BAND OVERFLOW FEATURE ANY CONSTRUCTIONACTIVITIES (12" -18"TYPICAL) TYP NOT TOSCALE NOT TOSCALE 2' SILT SOCK CONSTRUCTION HI-RES ORANGE NPDES 1. NOTES: 3. 2. 4. WORK AREA FENCE REGULATIONS,THECOMPLETEDSWPPPMUSTINCLUDEALLOF INSTALLED OVERALLCATCHBASINS/INLETS REMOVED AFTERCONTRIBUTINGDRAINAGE PIPE PROTECTIONORAPPROVED EQUIVALENT. MANUFACTURER TOBESILTSACK,INLETAND DEPTH (D)TOBEAMINIMUMOF16-INCHES. PROJECT SITE. SEDIMENT CONTROLINSERTSTOBE TEMPORARY INLETPROTECTIONTOBE THAT WILLRECEIVERUNOFFFROMTHE AREA HASBEENPERMANENTLYSTABILIZED. BEGIN.INSPECT,MAINTAIN,REPAIR,ANDREPLACE SECTION NPDES POLYESTER OUTERMESH GEOTEXTILE FILTERBAG WITH REINFORCED INC. ORAPPROVED INLET FILTERBY EQUAL AND PIPEPROTECTION, LIFT HANDLES 12"± . REFERTOTHE GALVANIZED STEEL FRAME STAKE 2" x WOODEN 3"-4" PROTECTED AREA TOBE STORMWATER AND NOT LEGEND: X EXISTING EXISTING EXISTING 1. NOTES: 50 44 EROSION &SEDIMENTCONTROL PROPERTY INFORMATION HAS BEENRE-ESTABLISHED THE FENCINGSHALLREMAININPLACEUNTILALLEXCAVATION HASBEENCOMPLETEDANDTHESURFACE X MHW MLW ENVIRONMENTAL AROUND DRIPLINES GENERAL UTILITIES 1'-0" CLEARANCE SS SF OF TREES 2'-0" 4'-0" X PROPOSED PROPOSED PROPOSED GRADE E/T/C OHW UGE FM 50 44 W T C S G FEMA FLOODZONE COASTAL BANKBUFFER COASTAL BANK MEAN HIGHWATER MEAN LOWWATER OUTER RIVERFRONT(100'-200') INNER RIVERFRONT(0'-100') RIVERFRONT BOUNDARY WETLAND 100'BUFFER WETLAND 50'BUFFER WETLAND BOUNDARY X TREE PROTECTION NOT TOSCALE CROSSWALK/PAVEMENT STRIPING SILT SOCK SILT FENCE WATER LINE TELEPHONE LINE CABLE LINE UNDERGROUND ELEC. UNDERGROUND E/T/C SEWER FORCEMAIN SANITARY SEWER OVERHEAD WIRE GAS LINE DRAIN PIPE SETBACK LINE PROPERTY, LOT,ORROW EASEMENT LINE ABUTTING LOT WALL -STONE WALL -RETAINING TREE LINE STORMWATER AREA SIDEWALK STONE PATHWAY LIMIT OFWORK GUARD RAIL FENCE -WOOD FENCE -WIRE FENCE -CHAINLINK EDGE OFPAVEMENT CURB CONTOUR -MAJOR CONTOUR -MINOR CONCRETE BUILDING BERM UP1 SYMBOLS EL:98.45 EL:95.00 FENCE STEEL POST5'-0"O.C. 6'-0" STANDARD

BIKE 10 H MW MP WV TV D GV MH SV T E ? S Y CO CS D CB B-1 TP-1 WF EXISTING EVERGREEN NUMBER OFPARKINGSPACES FLARED ENDOUTLET BOUNDARY TREE STUMP TREE CATCHBASIN STONE APRON EXISTING TREE BENCHMARK HANDICAP SYMBOL WETLAND FLAG BORING TEST PIT MONITORING WELL LIGHT POST GUY UTILITY POLE HYDRANT UTILITY BOX PIPE STUB CLEAN OUT CURB STOP GAS VALVE SEWER VALVE WATER VALVE INLET PROTECTION DRAIN MANHOLE METER PIT UNKNOWN MANHOLE TV BOX MANHOLE TELEPHONE MANHOLE ELECTRIC MANHOLE SEWER MANHOLE PROPOSED SPOTGRADE EXISTING SPOTGRADE MAIL BOX ROCK EXISTING SHRUB BIKE RACK PICNIC TABLE BENCH SIGN Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. Mystic River Horsley Witten Group, Inc. MYSTIC RIVER WATERSHED Sustainable Environmental Solutions Revisions CONSTRUCTION 90 Route 6A 1 C - NOT FOR Watershed Association www.horsleywitten.com Sandwich, MA 02563 20 Academy St Ste 306 STORMWATER RETROFITS 90 Route 6A 2

Sheet : Phone: (508) 833-6600 Arlington, MA 02476 Sandwich, MA 02563 3 Fax: (508) 833-3150 WOBURN, MASSACHUSETTS 508-833-6600 voice 2 2 Phone: (781) 316-3438 4 Dated: ---- Fax: ---- 508-833-3150 fax of 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 GENERAL NOTES ------JUNE 2021 Rev. Date By Appr. Description last modified: 06/29/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN EX.dwg

96 92

CUMMINGS BROOK

89 SB-3 95

92 96

← FLOW 94 92 Sheridan

WF MHW 10 94 ← FLOW REGULATORY FLOODWAY 92 92 WF MHW 9

110 93 ZONE X WF MHW 8 92 ZONE AE 500-YR WF MH 7

ZONE X

500-YR CUMMINGS BROOK 106 105

91 Street

107 FLOODWAY REGULATORY

108 92 AE ZONE 93 109 90

ZONE AE 96

100-YR 110 ZONE X → FLOW

500-YR 95 WF MHW 1 111 94 112 113 WF MH 6 114 94 100-YR ZONE AE 105 WF MH 4 94 95 WF BVW 1

500-YR ZONE X 109 WF MHW 2 107 96

93 WF MHW 3

108 92 91 109 97 94 95 WF BVW 2 WF BVW 20 ZONE X 500-YR

SB-2

110

Banner Drive Banner D 96

WF BVW 3 WF BVW 19

95 95

105 95 110 ZONE X

106 500-YR

WF BVW 4

112 94 93 97 92 98 WF BVW 5 WF BVW 18 91

WF BVW 17 92 91 98

107 99 H

110 Y

SB-1 BUFFER BVW 50' 99 BORDERING VEGETATED

BVW 100'

BUFFER WETLAND BUFFER BVW 50' WF BVW 7 109 105 91

BVW 100'

BUFFER 109 92 D

93 WF BVW 16

99 100

98 94

97 100

95 95

108 94

101

96 WF BVW 15 93 WF BVW 8

ZONE X

500-YR

108 99

100 108

WF BVW 14

108

105

108 WF BVW 9

Bedford Road 98

106

WF BVW 10 100 107

WF BVW 13

91 WF BVW 11

108 93 WF BVW 12 D

9394

109 95 94

106 100 95

110 110 106 100

96 100

97 105

102

100

104

103

102

101

100 111 102

104

105 106

112

107 113 106

105

107

114 115

110 110 50

115 116

0 25 Street Elijah GRAPHIC SCALE 1 INCH = 50 FEET 50 (in feet) D 100 200

MASS STATE PLANE Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. Horsley Witten Group, Inc. Mystic River MYSTIC RIVER WATERSHED Revisions

C - Sustainable Environmental Solutions CONSTRUCTION 90 Route 6A 1 ------NOT FOR Watershed Association www.horsleywitten.com Sandwich, MA 02563 20 Academy St Ste 306 STORMWATER RETROFITS 90 Route 6A 2 ------

Sheet : Phone: (508) 833-6600 Sandwich, MA 02563 3 3 Arlington, MA 02476 ------Fax: (508) 833-3150 WOBURN, MASSACHUSETTS 508-833-6600 voice 3 Phone: (781) 316-3438 4 ------Dated: ---- Fax: ---- 508-833-3150 fax of 5 ------Plan Title: 6 ------10 Date: Designed By: Drawn By: Checked By: 7 ------EXISTING CONDITIONS ------JUNE 2021 Rev. Date By Appr. Description last modified: 06/28/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN ESC.dwg 60

MASS STATE PLANE 0 30 GRAPHIC SCALE 1 INCH = 60 FEET 60 (in feet) 120 240 TOTAL PROJECT LIMIT OF WORK

8.0 AC± SS STAGING & MATERIALS

SILT SOCK SS 1,100 LF±

STOCKPILE AREA SS

SS SS CONSTRUCTION 94 GRUBBING IN FLOODPLAIN ENTRANCE

93 MINIMIZE CLEARING AND RETAIN VEGETATION AS SS RESTORATION AREA MUCH AS POSSIBLE 96 92

1.9 AC± SS

CUMMINGS BROOK 90

DE-WATERING FOR STREAM

89 SB-3 95 CHANNEL RESTORATION 88

88 SS 89 500 LF± 10,000 SF±

94 92 96 ← FLOW 94 SILT SOCK

FLOOD

PROTECTION 92 Sheridan 340 LF±

93 INLET SS 93

FLOOD

SS WF MHW 10 94 ← FLOW SS CONCRETE PAD 92

92 WF MHW 9 FLOOD FLOOD 110

WF MHW 8 93 92 SS WF MH 7 FLOOD

SS CUMMINGS BROOK 105106 SS

REMOVE 91 FLOOD Street 500 SF± 93 SS

107 FLOOD 92 FLOOD

FLOOD

SS FLOOD 108 92 93 109

90 SS SS SS

110 96

FLOW → FLOW SS FLOOD WF MHW 1 111 95 FLOOD FLOOD 112 WF MH 6 94 113 FLOOD 114 94 105 WF MH 4 94

FLOODWF BVW 1 FLOOD 95 109 WF MHW 2

107 SILT SOCK 96

93 WF MHW 3

108

FLOOD 92 91 GRUBBING FOR 655 LF±

109 STORMWATER 97 SS CLEARING & SS 94

SS FLOOD WETLAND WF BVW 2 SS

1.2 AC± 95 FLOOD WF BVW 20

SB-2 110

Banner Drive Banner D 96

WF BVW 3 WF BVW 19

ASPHALT PAVEMENT

REMOVE & REPLACE

SS 95 SILT SOCK

105 SS 1,400 LF±

110 106

WF BVW 4

112 SS 94

97 93 SS WF BVW 5 WF BVW 18 92 98 91 2,700 SF± ABANDON HURLD SCHOOL ABANDON EXISTING UTILITY INFRASTRUCTURE COORDINATE WITH TOWN & UTILITY OWNER(S) SS EXCLUDED FROM PROJECT

NOTE: 93 BVW 100'

BUFFER WF BVW 17 DRAINAGE NETWORK 92 BUFFER 98 EXISTING WETLAND 91

107 BVW 50' H 99 LIMIT OF WORK

110 Y

D ABANDON HURLD SCHOOL SB-1

LOCATION SHOWN IS APPROXIMATE 99 SS VERTICAL GRANITE CURBING BORDERING

VEGETATED SS 2.7 AC± BVW 100' WETLAND BUFFER BUFFER BVW 50' WF BVW 7

DRAINAGE NETWORK

109 105 91 109 SS

92 WF BVW 16

D SS 93 99 100

97 100

95 95

108 94

REMOVE & RETAIN

WF BVW 15 101

96 WF BVW 8 93

108 99 (TYP. 5) SS TO BE REMOVED TREES >12" DBH EXISTING HURLD SCHOOL

SS 100 108 SS TO BE DEMOLISHED EXISTING TREE

230 LF± WF BVW 14

SS RCP OUTFALL

108 1,800 LF±

96 SAWCUT 105 REMOVE 12" 27,000 SF± 108 WF BVW 9

PROTECT 97

Bedford Road 98 99

SS 106 3.0' WF BVW 10 100

107 SS

WF BVW 13

91 SS WF BVW 11

92 92

93 WF BVW 12

108 D

109 93

95 SS

SS 106

100 95

110 110 106

100 SS

G SS 96

SS 100 W

105

102

100

104

103

102

101

S SS 100 102 111

104

SS 105

SILT SOCK

SS 920 LF± 106 112

ENTRANCE CONSTRUCTION LIMIT OF WORK 113 107 8.0 AC± SS TOTAL PROJECT 106

SS 105 110 LF± SILT SOCK 107

CONCRETE & ASPHALT TO BE REMOVED 45,000 SF±

114 SS NETWORK SCHOOL DRAINAGE ABANDON HURLD 115

110 110 LIMIT OF WORK 8.0 AC±

115 TOTAL PROJECT 116

D REMOVE & REPLACE CONCRETE SIDWALK ASPHALT PAVEMENT & SAWCUT 60 LF± Elijah Street Elijah D Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. MYSTIC RIVER WATERSHED Revisions

C - Sustainable Environmental Solutions CONSTRUCTION 1 NOT FOR www.horsleywitten.com STORMWATER RETROFITS 90 Route 6A 2

Sheet : Sandwich, MA 02563 3 4 WOBURN, MASSACHUSETTS 508-833-6600 voice 4 4 508-833-3150 fax

of 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 DEMO & ESC PLAN ------JUNE 2021 Rev. Date By Appr. Description last modified: 06/29/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN ST.dwg 60

MASS STATE PLANE 0 30 GRAPHIC SCALE 1 INCH = 60 FEET 60 (in feet) 120 240 GATHERING SMALL AREA WALKING PATH 5.0' EXISTING 5' x CULVERT EXISTING STREAM CHANNEL SB-3 PROPERTY CHANNEL INV:89.40' CHANNEL CENTERLINE RESTORATION EX. STONE CULVERT FLOODPLAIN PROPOSED STREAM TREE LINE CUMMINGS BROOK CHANNEL CENTERLINE LINE RESTORED STREAM BRIDGE EXISTING CB PROPERTY

Sheridan CORE INTO OVERLOOK (SHEET C-8) LINE WF MHW 10 WF MHW 9 WF MHW 8 WF MH 7 8.0' SECONDARY BRIDGE

StreetD RIM:96.50' EXISTING CB PATH WALKING WF MHW 1 WF MH 6 PATH WF MH 4 BRIDGE WF BVW 1 WF MHW 2 WF MHW 3 FOREBAY 5.0' WF BVW 2 WF BVW 20

STORMWATER

SB-2 Banner Drive Banner D 5.0' INFLOW WF BVW 3 WF BVW 19 WF BVW 4 EDUCATIONAL SIGN SEATING AREA WITH WF BVW 5 WF BVW 18 D

WF BVW 17 H Y D SB-1 WETLAND EXISTING BRIDGE D ACTIVE RECREATION WF BVW 7 ENTRANCE SIGN WITH PARK MAP TREE LINE WF BVW 16 OPEN SPACE D 2 3 OUTFLOW WETLAND AC± WF BVW 15 WF BVW 8

EXISTING DMH

24" INV:105.60' RIM:110.00' PATH EXISTING DETENTION EXTENDED WETLAND WF BVW 14 WF BVW 9

Bedford Road WF BVW 10 EXISTING STRUCTURES AND WF BVW 13 TREE STORMWATER WF BVW 11 PIPING (TYP.) WF BVW 12 D D PLAYGROUND INCLUSIVE NATURE 1 4 AC± 9.0' 22.0' D D EXISTING PATH CONNECT TO

PAVILION HALF COURT BASKETBALL 24.0'

10 18.0' D

9 LINE PROPERTY PIPING (TYP.) STRUCTURES AND STORMWATER D EXISTING DMH RIM:107.50' 19 SPACES +2 HC PARKING AREA INV:98.70' D DRAIN PIPE CONNECT TO EXISTING D

TO EXISTING Elijah Street Elijah DRAIN PIPE CONNECT D D RIM:119.50' EXISTING DMH 24" INV:115.10 Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. MYSTIC RIVER WATERSHED Revisions

C - Sustainable Environmental Solutions CONSTRUCTION 1 NOT FOR www.horsleywitten.com STORMWATER RETROFITS 90 Route 6A 2

Sheet : Sandwich, MA 02563 3 5 WOBURN, MASSACHUSETTS 508-833-6600 voice 5 4 508-833-3150 fax

of 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 SITE PLAN ------JUNE 2021 Rev. Date By Appr. Description last modified: 06/30/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN GD.dwg 60

MASS STATE PLANE 0 30 GRAPHIC SCALE 1 INCH = 60 FEET 60 (in feet) 120 240

94 95 94 93 DETAIL GRADING PLAN (SHEET C-7)

96 92

91 EXISTING 5' x CULVERT

89 SB-3 95 CHANNEL INV:89.40'

88 88

89 CHANNEL CENTERLINE 6" INV OUT:95.00'

94 RESTORED STREAM

92 96

94 95

EXISTING CB RIM:97.00' 92 DMH 202 94 Sheridan CORE INTO (SHEET C-8) 93 93

95 WF MHW 10 94 92

92 WF MHW 9 110

92 WF MHW 8 93 WF MH 7

105106 91

StreetD 93

107 92

RIM:96.50' EXISTING CB

108 92 93

109

90 4 9 4 110 96

WF MHW 1

111 95

9 9 2 4

112 WF MH 6 93 94

9 113 1

114 94

WF MH 4 9

105 2 94

WF BVW 1 95 109 WF MHW 2

107 9 96

93 WF MHW 3 9 0

108 0 86.00 92

109 91 97 15" INV OUT:95.90' 94 86.00 12" INV IN:93.85' 6" INV IN:93.85' WF BVW 2 95 9 WF BVW 20 3

9 9

4 9 2 SB-2

3 RIM:98.60' 110 9 9

DMH 201 Banner Drive Banner 1 4 D 96

WF BVW 3 9

WF BVW 19 2 9

95 95 5

9 87.00

9 95 9

105 2 0 0

110 106

WF BVW 4 9 112 9 6

4 93 9

94 3 93 97 WF BVW 5 WF BVW 18 98 92 9 9 91 9 1 1 5 9 9 7 2 9

3 D

93 4 9

WF BVW 17 92 9 8 91 98

107 5 9 H 99

110 9 6 Y

4 9 SB-1 5 9 99

9 WF BVW 7

85.00

9 8 109 105

91 0

9 9 109

1 92 WF BVW 16 92 9

93 93 99 100

94 97 100

95 95

108 94

101 WF BVW 15 95

96 WF BVW 8 93

97 9

EXISTING DMH

24" INV:105.60' 91

98 5

108

99 18" INV IN:95.00' 15" INV IN:95.50' RIM:99.80' DMH 001 24" INV OUT:93.25'

RIM:110.00'

100 6 108

1 0

WF BVW 14

108 DETAIL GRADING PLAN (SHEET C-7) 96

105 108 WF BVW 9

Bedford Road 98 99

106 12" INV OUT:95.40' WF BVW 10 100

12" INV IN:95.50' 107

WF BVW 13 90

RIM:103.50'

WF BVW 11 91

92 DMH 203

93 WF BVW 12

108

109 93 95

D 94 106

100 95

110 110 106 107 100

100

105

102

100

104

103

99 102

101

109 108 100 102 111 D D 11 0

18" INV OUT:96.50' 18" INV IN:97.70' RIM:99.64' DMH 101 109

110 104

-1.0% 1

1 0

0 6 8 105 1

18" INV OUT:99.20' 15" INV IN:99.30'

RIM:102.00' DMH 102

106 108 -2.0% 10 112

DETAIL GRADING PLAN (SHEET C-7) 113 15" INV OUT:111.50' 107

9 106 WEIR EL:113.50± 24" INV:112.00± DETAIL GRADING PLAN (SHEET C-7)

-2.0%107 105

108 107 15" INV OUT:100.65' 15" INV IN:100.75' RIM:106.05' DMH 103 RIM:115.80

D DMH 105

109

110

114

111 EXISTING DMH 15" INV OUT:101.45' 12" INV IN:101.70' 12" INV IN:102.70' 15" INV IN:101.55' 115 RIM:104.74' DMH 104

11101 110 2 1 1 3 RIM:107.50' INV:98.70' 115 114

DRAIN PIPE CONNECT TO EXISTING 116 D

TO EXISTING Elijah Street Elijah DRAIN PIPE CONNECT D 12" INV OUT:97.05' RIM:109.00' DMH 204 D RIM:119.50' EXISTING DMH 24" INV:115.10 Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. MYSTIC RIVER WATERSHED Revisions

C - Sustainable Environmental Solutions CONSTRUCTION 1 NOT FOR www.horsleywitten.com STORMWATER RETROFITS 90 Route 6A 2

Sheet : Sandwich, MA 02563 3

6 WOBURN, MASSACHUSETTS 508-833-6600 voice 6 4 508-833-3150 fax

of 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 GRADING & DRAINAGE PLAN ------JUNE 2021 Rev. Date By Appr. Description last modified: 06/30/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN GD.dwg

30 9 94 5 9 94 3

0 93

15 96

92 GRAPHIC SCALE 1 INCH = 30 FEET 30

91 (in feet)

SB-3 60 95

96 94 95 RESTORED STREAM CHANNEL CENTERLINE EXISTING 5' x CULVERT 6" INV OUT:95.00' 94 Sheridan CORE INTO EXISTING CB 120 CHANNEL INV:89.40' RIM:97.00' DMH 202

93 93 EXISTING CB

93 RIM:96.50'

95 94

WF MHW 10 92 (SHEET C-8) 92 WF MHW 9

93 LOW MARSH ZONE HIGH MARSH ZONE DEEP POOL ZONE WF MHW 8 WF MH 7 (1'-6" TO 6'-0") 91 TOP BERM (6" TO 1'-6")

EL:94.00' Street D

(0" TO 6")

92 6.0'

90 93

4 96 9 4 94 95

WF MHW 1 93 9

2 94

1 94 WF MH 6

9 94 WF MH 4 2

4:1 SLOPE WF BVW 1

WF MHW 2 9 0 93 90 86.00 WF MHW 3

92 6" L=223' S=0.51%

91 97 86.00

94 95 NOTCH INV:93.25' CREST INV:93.50'

9 WF BVW 2 3 WF BVW 20

9 CHECKDAM 4 9 9 2 3 SB-2

9 15" INV OUT:95.90' 9

1 4

4:1 SLOPE 12" INV IN:93.85' 6" INV IN:93.85' 96 BOTTOM EL:92.00' 9 2 RIM:98.60' 9 DMH 201

5 87.00 WF BVW 3

WF BVW 19

95 95 9 9 9 0

2 0 FOREBAY 95 FLARED END SECTION 500 SF±

9 9 4 6 WF BVW 4 93 94 9

93 3 24" INV:92.25' 92 97 98 9 9 91 1 1 WF BVW 5 WF BVW 18

9 CONSTRUCTED 5

9 9 7 WETLAND 2

8" INV (x2):87.50' 9

3 D SLOPE PIPES

LOW-FLOW OUTLET 9

93 S=0.52% L=72' 15" REVERSE

8" INV (x2):91.00' 9 91 92 9 8

WF BVW 17 98 99 9 H 6 Y 9 D 4

SB-1 12" L=308' S=0.50%

9 7 99 D

85.00

8 WF BVW 7 9

105 91 0

92 9 9 D 1

93 92 WF BVW 16 93

98 100

94 1 OUTLET CONTROL WEIR 2 100

st nd

96 SLOPE 4:1

CREST INV:92.50' CREST INV:93.00'

95 95

94 108

101 95 96 93 SLOPE PROTECTION

WF BVW 15

WF BVW 8 92

97 5 91

108

99 18" INV IN:95.00' 15" INV IN:95.50' RIM:99.80'

DMH 001 24" INV OUT:93.25'

1 0

100 7

108

108 18" L=298' S=0.50% L=298' 18"

WF BVW 14

Bedford Road 96 105

WF BVW 9

107

99 106 100 WF BVW 10

WF BVW 13 90

108

109

92 WF BVW 11

106 93

WF BVW 12 93

110 94

107 95 D

100 94

106

100

18" L=140' S=1.04% L=140' 18"

108 100

109 97 111

105

102

1 100

1 104

103

102 101

100

102 109 D 12" INV OUT:102.00' PARKING 110 -1.0% AREA 18" INV OUT:96.50' 18" INV IN:97.70' RIM:99.64' DMH 101

1 6 15" L=266' S=0.50% 0 L=266' 15"

8 RIM:105.75'

1 104 CB 107 11

12" INV OUT:103.00'

10 106

108 105 -2.0% 112 RIM:106.75' 18" INV OUT:99.20' 15" INV IN:99.30' RIM:102.00' DMH 102

CB 106

107 113

9 S=0.56% L=51

-2.0% 106 12"

15" L=98' S=0.70% L=98' 15" 107

15" INV OUT:100.65' 15" INV IN:100.75'

RIM:106.05' DMH 103 108 12"107 L=50 S=0.55% 15" INV OUT:111.50' CONNECT TO EXISTING

105 D WEIR EL:113.50±

24" INV:112.00± 109

RIM:115.80 110 15" L=115' S=8.39% L=115' 15"

114 DMH 105

DRAIN PIPE 111 15" INV OUT:101.45' 12" INV IN:101.70' 12" INV IN:102.70' 15" INV IN:101.55' RIM:104.74' DMH 104 115

111102

1 1 3

114 115

D 116

MASS STATE PLANE Elijah Street Elijah Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. MYSTIC RIVER WATERSHED Revisions

C - Sustainable Environmental Solutions CONSTRUCTION 1 NOT FOR www.horsleywitten.com STORMWATER RETROFITS 90 Route 6A 2

Sheet : Sandwich, MA 02563 3 7 WOBURN, MASSACHUSETTS 508-833-6600 voice 7 4 508-833-3150 fax

of 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 DETAIL GRADING PLAN ------JUNE 2021 Rev. Date By Appr. Description STABILIZE CHANNEL last modified: 06/30/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN RV.dwg AT TRANSITION 4+78 85 88 89 95 86 87 90 92 93 94 91 20

2.5' 15 SHERIDAN STREET SHERIDAN 10 BOTTOM EL:89.40' EXISTING CHANNEL AT CULVERT EXISTING 5' X STONE CULVERT 16' 5 3.0' VEGETATION TO REMAIN 0 4+50 56' MIN. TO TERRACE BASEFLOW CHANNEL POOL DEPENDING ON

-5

BANKFULL CHANNEL 5+00 -10 PROPOSED STREAM CHANNEL SECTION VIEW -15 -20 BANKFULL RADIUS [R] POOL -25 R64.0' -30 MODIFIED FLOODPLAIN -35

-40 RIFFLE -45 BANKFULL CHANNEL

4+50 -50

4+00 RIFFLE -55 CENTERLINE -60 -65 BANKFULL WIDTH -70 16.0' -75 EXISTING GRADE -80 -85 POOL -90 -95 -100 POOL

3+50 4+00 -105 R48.0' EXISTING LEFT BANK OF CUMMINGS BROOK -110 -115 -120

85 86 87 88 89 90 91 92 93 94 95 RIFFLE

FEET BELOW GRADE AS SHOWN. NOTE: TOPOGRAPHIC CONTOURS DEPICTED ARE FROM AERIAL LIDAR SURVEY. THE STEEP CHANNELS OF CUMMINGS BROOK WERE NOT THE SURVEY. ACTUAL STREAM CHANNEL DEPTHS ARE TWO TO THREE ACCURATELY RECORDED BY THE FLIGHT PATH AND RESOLUTION OF 3+50

RIFFLE 3+00

MEANDER UNIT LENGTH [L] PROPOSED STREAM CHANNEL RESTORATION PROFILE VIEW PROPOSED STREAM CHANNEL RESTORATION PLAN VIEW

PROPOSED THALWEG 3+00 POOL POOL 2+50

R45.0' EXISTING GROUND SURFACE ABOVE) INSET (SEE VIEW SECTION PROPOSED AVERAGE CENTERLINE GRADE (CHANNEL DEPTH LOWER) AS RECORDED BY LIDAR EXISTING LEFT BANK OF

2+50 0.60%

CUMMINGS BROOK

RIFFLE RIFFLE 2+00

2+00 CENTERLINE (THALWEG) BASEFLOW CHANNEL POOL R45.0' POOL STATIONING THALWEG 1+50

VEGETATED WETLAND

EXISTING BORDERING 1+50

RIFFLE RIFFLE 1+00 1+00 20 R41.0' POOL 0 POOL EXISTING CUMMINGS BROOK CHANNEL 10 0+50 GRAPHIC SCALE PROPOSED CONFLUENCE WITH 1 INCH = 20 FEET 20 0+50 EXISTING CUMMINGS (in feet) BROOK CHANNEL APPROXIMATE BOTTOM EL:86.65'± EXISTING LEFT BANK OF CUMMINGS BROOK 40 0+00 0+00 85 86 87 88 89 90 91 92 93 94 95 80 CHANNEL RESTORATION DESIGN CALCULATIONS L R θ CENTERLINE CHANNEL X Z 1 2 W Y Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. Horsley Witten Group, Inc. Mystic River Watershed MYSTIC RIVER WATERSHED Revisions

C - Sustainable Environmental Solutions CONSTRUCTION 90 Route 6A 1 NOT FOR Association www.horsleywitten.com Sandwich, MA 02563 20 Academy St Ste 306 STORMWATER RETROFITS 90 Route 6A 2

Sheet : Phone:(508) 833-6600 Sandwich, MA 02563 3 8 Arlington, MA 02476 Fax: (508) 833-3150 WOBURN, MASSACHUSETTS 508-833-6600 voice 8 Phone: (781) 316-3438 4 Dated: ---- 508-833-3150 fax

of Fax: ---- 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 STREAM RESTORATION PLAN MCL MCL RAC JUNE 2021 Rev. Date By Appr. Description last modified: 06/30/21 printed: 06/30/21 by ml H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN DE.dwg BLENDED CRUSHED STONE OR RECLAIMED 1. GENERAL NOTES: 7. 5. 3. 6. 2. 4. MASS DOT "STANDARDS SPECIFICATIONS CONCRETE FOOTING MANHOLE COURSE (PER MASS DOT SECTION 460) 1. NOTES: 3. 2. PAVEMENT BORROW CONFORMING TO PLACE SUB-BASE IN MAXIMUM 8" LIFTS (COMPACTED TO 95%). PAVED AREAS PRIOR TO SUB-BASE INSTALLATION. PAVEMENT SURFACE. EXCAVATE SANDY-LOAM AND/OR LOAMY-SAND TOPSOIL MATERIAL FROM ALL SWEEP CLEAN THE EXISTING BINDER COURSE SURFACE PRIOR TO INSTALLING WEARING BY SEE GRADING PLANS FOR PAVEMENT SLOPE AND CROSS SLOPE. SEE SITE LAYOUT PLAN FOR PAVEMENT WIDTH AND LOCATION. COMPACT SUB-GRADE FILL TO 95% COMPACTION. SUB-GRADE (EXISTING MATERIAL) SHALL CONSIST OF INERT MATERIAL THAT IS HARD, DURABLE STONE APPLY A TACK COAT PER SPECIFICATIONS. A STREET SWEEPING MACHINE . AND/OR COARSE SAND, FREE FROM LOAM AND CLAY TO A DEPTH NOT LESS THAN 4-FT BELOW THE FINISH COVER 1. FRAME NOTES 3. 2. 4. FRAME AND COVER SHALL CONFORM TO MASSACHUSETTS STANDARDS HEAVY DUTY (EAST NOTES: JORDAN, NEENAH, OR APPROVED EQUIVALENT). SOLID COMPACTED DENSE GRADE, (MIN. 3,000 PSI) DEEP AND FILL WITH FIBER MODIFIED ASPHALT SEALER AS SHOWN. PRIOR TO INSTALLING THE WEARING COURSE EXISTING VERTICAL PAVEMENT SURFACE SHALL EXISTING BITUMINOUS PAVEMENT SHALL BE REMOVED TO A CLEAN STRAIGHT EDGE VIA SAW BE SWEPT COMPLETELY CLEAN. CUTTING. THE SAW CUT SHALL BE COMPLETED PERPENDICULAR TO ROADWAY/SIDEWALK. AFTER PROPER COMPACTION (SEE PAVEMENT DETAIL) SAW CUT NEW ABUTMENT 3/4" WEARING SURFACE & BINDER CLASS I TYPE I-1 BIT. PAVEMENT: PROVIDE CURB EXPANSION JOINTS AT 5'-0" TO 6'-0" O.C. CEMENT MORTAR JOINTS & INSTALL PREFORMED (1/2") EXPANSION JOINT WHERE REQUIRED. VERTICAL CURBING TO BE INSTALLED AS SHOWN ON THE SITE PLAN. VERTICAL CURB MIN. HEIGHT = 18" WIDTH 6" NEW TYPE I-1 BIT. PAVEMENT WEARING SURFACE, ON BINDER BITUMINOUS PAVEMENT FOR HIGHWAYS AND BRIDGES" : WEARING COURSE (SEE PAVEMENT DETAIL) BINDER COURSE LARGE STONES. REMOVE UP TO 6" OF UNSUITABLE MATERIAL BELOW SUB BASE NOTE AND REPLACE WITH CLEAN BORROW FREE FROM STICKS COURSE PAVEMENT DRAINAGE STRUCTURE FRAME AND GRATE : 6" (MIN.) 3/4" SUBGRADE APPROVED 1" BITUMINOUS PAVEMENT (MIN.) 6" REVEAL 12" (TYP.) 9" (MIN.) 12" PAVEMENT PATCH SECTION A-A VERTICAL CURB 3/4" WALKING PATH 3" 5' WALKING PATH 3/4" NOT TO SCALE NOT TO SCALE NOT TO SCALE NOT TO SCALE NOT TO SCALE 1'-11 C L 3/8" 4 3

" 3/4" DIA. 2% CROSS 2% (SEE PAVEMENT DETAIL) COMPACTED SUB-BASE 1/4" SAW KERF FILLED WITH FIBER MODIFIED ASPHALT SEALER VERTICAL CURB 1" 3/4" SURFACE ADA-COMPLIANT PAVEMENT PATCH (SEE NOTES) (MIN.) 1 A 12" 1" 2 1 " SOLID COVER PLAN 1" EXISTING PAVEMENT APPROVED SUBGRADE 1 2 1 RECLAIMED ASPHALT SUBBASE GRADE GRAVEL OR COMPACTED DENSE " 8" MEDIUM 12" HEAVY 2 2" 2 1 1" " HEAVY OR 1 APPROVED SUBGRADE FINISH GRADE SEE PLANS 3/8" A 2 1 " MEDIUM 1. NOTES: 3. 2. 4. COMPACTED SUBGRADE DIMENSIONS ARE TAKEN FROM THE FOR VARIOUS LIVE LOADING RECOMMENDED DEPTHS OF COVER NOMINAL FOLLOWS: EDITION. REQUIRED IN ASTM D2321, LATEST PARTICLES OF GRAVEL MEETING DISCRETION OF THE ENGINEER, PRACTICE FOR INSTALLATION OF DEFINED IN ASTM D2321, "STANDARD DEPTH REQUIRED BY THE ENGINEER FOUNDATION MINIMUM COVER MINIMUM TRENCH WIDTHS TO BE AS MINIMUM BEDDING THICKNESS TO BE MATERIAL TO BE INSTALLED AS BACKFILL: SUITABLE MATERIAL TO BEDDING, HAUNCHING AND INITIAL BOTTOM IS UNSTABLE, THE OTHERWISE NOTED, ALL CONDITIONS ARE SUMMARIZED IN (750-900mm) CPEP. (CPEP); 6" (150mm) FOR 30"-36" CORRUGATED POLYETHYLENE PIPE CONSIST OF CLEAN, HARD, GEOTEXTILE FABRIC. OF CLASS I OR II MATERIAL AS CONTRACTOR TO EXCAVATE A SURFACE. Ø in (mm) STABILIZED USING A WOVEN TOP OF PIPE TO THE GROUND THE FOLLOWING TABLE. UNLESS THE FOLLOWING: TRENCH BOTTOM MAY BE THERMOPLASTIC PIPE FOR SEWERS 4" (100mm) FOR 4"-24" (100-600mm) AND 42"-48"(1050-1200mm) NO. 8 NO. 4 3/8" SIEVE SIZE AN ALTERNATIVE AND AT THE APPLICATIONS," LATEST EDITION; AS AND OTHER GRAVITY-FLOW AND REPLACE WITH A FOUNDATION SEE NOTE 5,6. 18 (450) 15 (375) 12 (300) 10 (250) 8 (200) RISER ECCENTRIC GRADE MONOLITHIC SECTION(S) CONE SECTION FINISH

BASE SECTION AS REQ'D. SEE ALTERNATE 8" (MIN.) 12" MIN. RECOMMENDED TRENCH WIDTH, in (mm)

% PASSING TOP SLAB (MIN.) : WHERE THE TRENCH 12" ALTERNATE TOP SLAB : MINIMUM 39 (990) 34 (860) 31 (790) 0-2 5-15 85-95 28 (710) 25 (630) SEE PLANS 8" ACCESS 24" DIA. CONSTRUCTED WETLAND INFLOW PRECAST DRAIN MANHOLE (DMH) 60" DIA. (MIN.) ACCESS HDPE DRAINAGE PIPE TRENCH 24" DIA. SEE PLANS FOR 48" DIA. (MIN.) GEOMETRY NOTE 2) STEPS (SEE VARIES DIA. HDPE PIPE 8" SEE PLANS DETAIL PROVIDED BY ADVANCED DRAINAGE SYSTEMS, INC. NOT TO SCALE NOT TO SCALE NOT TO SCALE * EXPERIENCE WITH THE PIPE. AASHTO SPECIFICATIONS MANUFACTURERS, REQUIRE ADDITIONAL (TEMPORARY BOTH AASHTO AND ASTM, AS WELL MOST NOT LESS THAN 12 INCHES". THIS COVER IS MEASURED FROM LOAD RESPONSE, MANUFACTURER'S TESTING AND FIELD CONSTRUCTION VEHICLE LOADS. GRADING AND PAVING, IS SUFFICIENT FOR LARGE COVER, MOUNDED OVER THE PIPE AND REMOVED FOR FINAL OR THE BOTTOM OF A FLEXIBLE (BITUMINOUS) PAVEMENT. SECTION 18.4.1.5 DEFINES THE MINIMUM COVER AS "ID/8 BUT SECTION 30. THIS IS BASED ON EMPIRICAL CALCULATION OF THE PIPE OD TO TOP OF A RIGID (CONCRETE) PAVEMENT TRAFFIC LOADS IF INSTALLED IN ACCORDANCE WITH AASHTO THE MINIMUM COVER FOR A HDPE PIPE IS 1'-0" H-20 RAILWAY HEAVY H25 (RIGID PAVEMENT) E80 H25 (FLEXIBLE PAVEMENT) CONSTRUCTION LOADING CONDITION SECTION PLAN ABOVE TOP OF PIPE TOP OF PIPE TO BOTTOM BITUMINOUS PAVEMENT COMPACTED CRUSHED STONE SURFACE LIVE EXTEND PAVERS 6" MIN. TRENCH WIDTH SEE PLANS SURFACE VARIES 1. NOTES: 7. 6. 5. 3. 2. 4. INSTALLED AT 12" O.C. FOR THE FULL DEPTH OF FRAME AND COVER SHALL CONFORM TO ELEVATION AND ALIGNMENT. DO NOT PLACE MORTAR BED AROUND DRAIN MANHOLE FRAME AND COVER SHALL BE PIPE CONNECTIONS. PROVIDE "V" KNOCKOUTS FOR PIPES WITH 2" MAX. MASSACHUSETTS STANDARDS HEAVY DUTY (EAST LOADING. STRUCTURE UNTIL IT IS AT THE REQUIRED FINISH SET IN FULL 12" MORTAR BED. ADJUST TO GRADE SHALL BE PREFORMED BUTYL RUBBER. CLEARANCE TO OUTSIDE OF PIPE. MORTAR ALL COPOLYMER MANHOLE STEPS SHALL BE JORDAN, NEENAH, OR APPROVED EQUIVALENT). JOINT SEALANT BETWEEN PRECAST SECTIONS THE STRUCTURE. WITH PRECAST CONCRETE RISER OR BRICK. ALL SECTIONS SHALL BE DESIGNED FOR H-20 PAVER SYSTEM PLANTABLE CONCRETE SEE DETAIL BOTH SIDES SEE NOTE 4. D + 6" MIN.

slope DIAMETER (D) TO SPRINGLINE OF PIPE PIPE IN GRASS INITIAL BACKFILL, MINIMUM RECOMMENDED PAVMENT (H) TOP OF PIPE. 6"-12" ABOVE HAUNCHING COVER TO 3/4" CRUSHED STONE MINIMUM 6" MIN. COMPACTED FOUNDATION COVER, in (mm) RIGID 12 (300) 12 (300) 24 (610) 48 (1220) EARTH UNDISTURBED INFLOW PIPE

BEDDING MATERIAL slope * PLANTABLE CONCRETE MATS DETENTION EXTENDED WETLAND SUBBASE SLOPED TO MATCH DETAIL FOR DESIGN ELEVATIONS NOTE: SEE CONSTRUCTED WETLAND 1. NOTES: 3. 2. 24" SURFACE SEE PLANS ENGINEER APPROVED FILTER FABRIC AROUND PERIMETER AND BOTTOM OF STONE BASE. KEY IN MINIMUM 6". FINISHED GRADE CRUSHED STONE. SEE SPECIFICATIONS FOR ACCEPTABLE SIEVE ANALYSIS BOTH SAND AND GRASS PAVERS SHALL BE DRIVEABLE MANUFACTURED BY SOIL RETENTION OR LOW PERMEABILITY AN ENGINEER APPROVED EQUAL. PAVER SLOPE 3.3-5% TOP OF BERM 12" CORE MATERIAL CONSTRUCTED WETLAND EMBANKMENT 6" MIN. 8" REVERSE-SLOPE LOW-FLOW OUTLET MINIMUM COVER 12" OUTLET CONTROL WEIR SECTION PLANTABLE CONCRETE PAVERS A 1 4 TYP 3 MAX SECTION A-A GEOMETRY SEE PLANS FOR BERM PLAN VIEW NOT TO SCALE NOT TO SCALE NOT TO SCALE NOT TO SCALE MIN. 3.0' 8" PVC PIPE 5% MAX. 1ST CREST 2' 2ND CREST CONTROL BLANKET APPLY EROSION TOP BERM 4" MIN. LOAM & SEED MONOLITHIC OR CONSTRUCTED IN SECTIONS CONCRETE WEIR A GRANULAR INFILL 2" BEDDING COURSE MODIFIED PROCTOR DENSITY ASTM C33 SAND COMPACTED SUBGRADE, 95% MIRAFI 140N OR APPROVED EQUIVALENT NON-WOVEN FILTER FABRIC 9.5" 1.5" 6" CRUSHED STONE 2' 3 TYP 4" MIN. HEADWALL CONCRETE 1

FOR FINISH

SURFACE SEE PLANS EXISTING SURFACE EXISTING VERTICAL FLUSH CURB INFLOW

2" x 10" STRINGER 5 4 " DECKING RAMP SPAN FOREBAY CONCRETE FOOTING 6" X PRESSURE TREATED POST (ONLY IN HIGH AND LOW MARSH) STABILIZATION WETLAND PLANTING SOIL SURFACE HIGH MARSH ZONE CONSTRUCTED WETLAND TYPICAL DETAIL (0" TO 6") CLEARANCE 7" MIN. BRIDGE CROSSING LOW MARSH ZONE PLANTINGS WETLAND

NOT TO SCALE NOT TO SCALE SURFACE VARIES CENTER SPAN (6" TO 18") WQ STORM EL.=91.70' 1-YR STORM EL.=92.52' SEE PLANS 2-YR STORM EL.=92.69' 1. NOTES: 5. 3. 2. 4. 1. NOTE: 3. 2. STRAW BALES AND UNDER TUBULAR WATERPROOF LINER (WATERPROOF TARPAULIN OR CONTINUOUS SHEET EXISTING GRADE DEWATERING PUMP(S) 100-YR STORM EL.=93.59' OF POLYETHYLENE) DRAPED OVER UNDISTURBED PRE-CAST PERFORATED PUMP CAGE FINAL DEPTH TO BE DETERMINED BY CONTRACTOR BASED ON EXISTING GRADE AND OF WATER. PUMP CHAMBER SIZE TO BE DETERMINED BASED ON DIMENSIONS. MATERIAL CAN REMAIN. LOCATE PUMP OUTSIDE OF THE MAIN EXCAVATION AREA TO MINIMIZE SEDIMENTATION. SIZE PUMP TO SUFFICIENTLY DEWATER EXCAVATION. MULTIPLE PUMPS BE INSTALLED AS NECESSARY. SUMP AND EQUIPMENT IS TEMPORARY MUST BE REMOVED AFTER USE. STONE AND/OR NATURAL INLET HOSE TO BE INSTALLED IN AN EXCAVATED SUMP PIT FILLED WITH CRUSHED STONE. NUMBER OF BALES MAY VARY DEPENDING ON SITE CONDITIONS. THE BASIN TO BE SIZED PREVENT WATER FROM OVERTOPPING STRAWBALES. MATERIAL NATIVE PERFORATED HDPE/PVC PIPE OR PUMP SUCTION HOSE (TO CATCHBASIN) - SEE NOTES SEDIMENT BARRIER DEWATERING CONTAINMENT AREA DETAIL ESHGW=90.50'± PERM. POOL EL.=91.00'± (1'-6" TO 6'-0") DEEP POOL STRAWBALE SEDIMENT BARRIER TIE HOSE TO WOODEN STAKES DEWATERING SUMP DETAIL EXCAVATION BOTTOM. 4' MIN. AS REQUIRED 2' MIN BELOW PER PUMPING RATE SUBGRADE APPROVED CROSS-SECTION 12" DIA TUBULAR SEDIMENT FINISHED GRADE BARRIER STAKED IN PLACE PLAN VIEW NOT TO SCALE

NOT TO SCALE

(FROM DEWATERING SUMP PIT) 2" x 10" STRINGER 10" x 2"

RAMP SPAN 5% MAX. 5% PUMP DISCHARGE HOSE (SEE DETAIL) ORIENT CONTAINMENT AREA SO THAT BOTTOM OF THE SUCTION HOSE THE CONTAINMENT AREA SLOPES DOWN TOWARD REQUIRED 2' MIN. TOP BERM EL.=94.00' AS INSTALL GEOTEXTILE FILTER BAG AT END OF PUMP HOSE EXISTING WETLAND 3/4" WASHED STONE 1ST CREST EL:92.50' CONTROL WEIR 2ND CREST EL:93.00' 1" MIN. DEWATERING SYSTEM PUMP DISCHARGE TO LOW FLOW PIPE REVERSE-SLOPE 8" INV OUT:91.00' STAKES TO WOODEN TIE HOSE FLUSH CURB VERTICAL PUMPING RATE PER Sheet Number: Project Number: Registration: Survey Provided By: Prepared For: Plan Set: 21008 DRAFT Horsley Witten Group, Inc. Mystic River Horsley Witten Group, Inc. MYSTIC RIVER WATERSHED Sustainable Environmental Solutions Revisions CONSTRUCTION 90 Route 6A 1 C - NOT FOR Watershed Association www.horsleywitten.com Sandwich, MA 02563 20 Academy St Ste 306 STORMWATER RETROFITS 90 Route 6A 2

Sheet : Phone: (508) 833-6600 Arlington, MA 02476 Sandwich, MA 02563 3 Fax: (508) 833-3150 WOBURN, MASSACHUSETTS 508-833-6600 voice 9 9 Phone: (781) 316-3438 4 Dated: ---- Fax: ---- 508-833-3150 fax of 5 Plan Title: 6 10 Date: Designed By: Drawn By: Checked By: 7 CONSTRUCTION DETAILS ------JUNE 2021 Rev. Date By Appr. Description GENERAL PLANTING NOTES: GENERAL SEEDING NOTES:

1. THE FOLLOWING NOTES ARE PROVIDED AS GENERAL PLANTING GUIDELINES 1. SEND A REPRESENTATIVE SAMPLE OF THE TOPSOIL TO A TESTING LABORATORY FOR 1'-0" CLEARANCE SEED AS SPECIFIED IN NOTES AROUND DRIPLINES ONLY. THOROUGHLY REVIEW THE PROJECT SPECIFICATIONS FOR ALL STANDARD SOIL ANALYSIS AS DESCRIBED IN THE SPECIFICATIONS. SUBMIT TO THE AND DRAWINGS. LANDSCAPE REQUIREMENTS PRIOR TO THE COMMENCEMENT OF ANY LANDSCAPE LANDSCAPE ARCHITECT AND ENGINEER TEST RESULTS WITH RECOMMENDED SOIL OF TREES PLANT TREE PLUMB - SNOW FENCE WORK. SUBMIT IN WRITING TO THE LANDSCAPE ARCHITECT ANY QUESTIONS OR TREATMENTS TO PROMOTE PLANT AND GRASS GROWTH. CORRECT DEFICIENCIES IN PRUNE BROKEN OR DEAD TOPSOIL- NO STONES GREATER THAN 1" Ø, CLARIFICATIONS REQUIRED AT A MINIMUM OF 30 DAYS PRIOR TO ORDERING ANY THE LOAM AND STOCKPILED TOPSOIL AS DIRECTED BY THE TESTING AGENCY. BRANCHES AS DIRECTED BY 6'-0" STANDARD MATERIALS OR BEGINNING ANY LANDSCAPE CONSTRUCTION. FINISH GRADE COMPACT WITH A HANDROLLER IN TWO LANDSCAPE ARCHITECT DIRECTIONS AND FINE RAKE PRIOR TO STEEL POST 2. ALL AREAS THAT ARE DISTURBED AND/OR GRADED DURING CONSTRUCTION ARE TO 4'-0" X SEEDING. 2. SUBMIT TO THE LANDSCAPE ARCHITECT FOR REVIEW AND APPROVAL ALL BE BROUGHT TO FINISHED GRADE WITH AT LEAST 4" MINIMUM DEPTH OF GOOD TBD BY SUBSOIL- SCARIFY AND LOOSEN ------REQUIRED LANDSCAPE SUBMITTALS AS DESCRIBED IN THE SPECIFICATIONS QUALITY LOAM AND SEEDED WITH A QUICK GERMINATING GRASS SEED SUCH AS NEW LANDSCAPE DESIGNER" ROUGH GRADE PRIOR TO TOPSOIL NYLON GUY WEBBING- Description GRADE INCLUDING A PLANT LIST WITH PLANT SIZE AND QUANTITIES TO BE ORDERED ENGLAND EROSION CONTROL RESTORATION MIX OR AS SPECIFIED ON THE PLANS. PLACEMENT STAPLE OR TIE TO STAKE ------Appr. PRIOR TO DELIVERY TO THE PROJECT SITE. 2'-0" MIN. SUBSOIL- COMPACTION NO > 90% DENSITY By 3. PRIOR TO THE PLACEMENT OF TOP SOIL, LOOSEN THE SUBGRADE OF ALL PROPOSED 3-2"x3"xVARIES ------3. FURNISH AND INSTALL ALL PLANTS AS SHOWN ON THE DRAWINGS AND IN THE SEEDED AREAS TO A DEPTH OF 6" AND RAKE TO REMOVE STONES LARGER THAN 1 WOOD STAKES TO FIRST WHORL OF BRANCHES @ 120 DEGREE SIZE AND QUANTITIES SPECIFIED ON THE PLANTING SCHEDULE. PLANT INCH, STICKS, ROOTS, RUBBISH AND OTHER EXTRANEOUS MATTER AND LEGALLY EVERGREEN TREE INTERVALS AND PLACED PLUMB. Date NOTES: SUBSTITUTION SELECTION MUST BE APPROVED BY BIOLOGIST OR LANDSCAPE DISPOSE TO AN OFF SITE LOCATION. DO NOT PUT STAKES THROUGH ------1. SEE LANDSCAPE GRADING SPECIFICATIONS FOR TOPSOIL REQUIREMENTS. ARCHITECT PRIOR TO INSTALLATION. ROOTBALL 1 4 2 3 6 2. CONFIRM SUBGRADES ARE CORRECT AND POSITIVE DRAINAGE IS MAINTAINED PRIOR TO 5 7 Revisions 4. DO NOT SPREAD TOPSOIL IF THE SUBGRADE IS FROZEN, EXCESSIVELY WET, PLACEMENT OF TOPSOIL. Rev. 4. ALL PLANTS TO COMPLY WITH APPLICABLE REQUIREMENTS OF ANSI Z60.1 COMPACTED OR NOT PROPERLY PREPARED PER THE NOTES AND SPECIFICATIONS. 3. NOTIFY ENGINEER/LANDSCAPE ARCHITECT FOR REVIEW OF SUBGRADE PRIOR TO PLACEMENT OF TOP OF ROOTBALL FLUSH WITH "AMERICAN STANDARD FOR NURSERY STOCK." LATEST EDITION, PUBLISHED BY THE TOPSOIL. FINISH GRADE. ROOT FLARE EXPOSED. DO NOT BURY OR

THE AMERICAN NURSERY AND LANDSCAPE ASSOCIATION INC. 5. SEE SPECIFICATIONS FOR SEASONAL REQUIREMENTS FOR SEEDING. ---- PILE MULCH. LOAM AND SEED DETAIL 5. PLANTS TO BE GROWN UNDER CLIMATIC CONDITIONS SIMILAR TO THOSE IN THE Checked By: WATERING NOTES: NOT TO SCALE 3" SHREDDED MULCH LOCALITY OF THE PROJECT FOR AT LEAST TWO (2) YEARS. USE HEALTHY IN TREE PIT OR AS INDICATED NURSERY GROWN PLANTS THAT HAVE A WELL DEVELOPED ROOT SYSTEM. PLANTS MUST BE FREE OF DISEASE, INSECTS, EGGS OR LARVAE. 1. PROVIDE PROPER PLANT CARE, MAINTENANCE AND WATERING ON SITE UNTIL REMOVE TOP THIRD OF ---- SUCH TIME AS THE LANDSCAPING IS ACCEPTED BY THE PROPERTY OWNER AS BURLAP AT ROOTBALL SNOW SATISFACTORY PER THE SPECIFICATIONS OR AS DETERMINED BY ANY WRITTEN 4'0" MIN. 1'-0" CLEARANCE 6. INSTALL PLANTS WITHIN ONE (1) WEEK OF PURCHASE. IF PLANTS ARE TO BE SCARIFY SIDE WALLS AND AROUND DRIPLINES FENCE Drawn By: AGREEMENTS BETWEEN THE CONTRACTOR AND PROPERTY OWNER. STORED AT THE SITE PRIOR TO PLANTING, IT IS THE CONTRACTOR'S HAND ROLLED BOTTOM OF TREE OF TREES 6'-0" STANDARD RESPONSIBILITY TO ENSURE THEY ARE PROPERLY MAINTAINED, WATERED, AND SOD PIT 4" DEEP STEEL POST 5'-0" O.C. REMAIN HEALTHY. 2. ESTABLISH AN APPROPRIATE WATERING SCHEDULE FOR ALL PLANT MATERIAL 2"-4" SOIL BERM ---- BASED UPON PLANT SPECIES REQUIREMENTS AND SITE CONDITIONS. PROVIDE TOPSOIL- NO STONES GREATER THAN 1" Ø, SCHEDULE IN WRITING TO THE LANDSCAPE ARCHITECT AND OWNER FOR REVIEW FINISH GRADE 7. PROCEED WITH PLANTING ONLY WHEN EXISTING AND FORECASTED WEATHER COMPACT WITH A HANDROLLER IN TWO 4'-0" Designed By: GRADE CONDITIONS PERMIT. SUBMIT TO THE LANDSCAPE ARCHITECT IN WRITING THE AND APPROVAL. ADHERE TO THE APPROVED SCHEDULE UNTIL PLANTS ARE X DIRECTIONS AND FINE RAKE PRIOR TO PROPOSED PLANTING SCHEDULE. OBTAIN APPROVAL OF PLANTING SCHEDULE FULLY ESTABLISHED. TBD BY SEEDING. FROM THE LANDSCAPE ARCHITECT PRIOR TO PERFORMING ANY WORK. LANDSCAPE DESIGNER" SUBSOIL- SCARIFY AND LOOSEN GRADE 3. AT A MINIMUM THE NEWLY SEEDED AND/OR HYDROSEEDED LAWNS SHOULD BE ROUGH GRADE PRIOR TO TOPSOIL PLACEMENT 24" MIN. PLANTING SOIL 2'-0" 8. SEASONS FOR PLANTING: WATERED 2-3 TIMES A DAY. SPECIAL CARE SHOULD BE TAKEN TO ENSURE THAT 12" 36" MIN. MIN. JUNE 2021 SPRING: DECIDUOUS: APRIL 1 TO JUNE 15 THE LAWN IS NOT SATURATED DURING WATERING. IF AN IRRIGATION SYSTEM IS SUBSOIL- COMPACTION NO > 90% DENSITY EVERGREEN: APRIL 1 TO JUNE 15 NOT PROVIDED, A TEMPORARY IRRIGATION SYSTEM OR HANDHELD GARDEN HOSE DECIDUOUS TREE Sustainable Environmental Solutions Sandwich, MA 02563 www.horsleywitten.com 90 Route 6A 508-833-6600 voice 508-833-3150 fax Date: Horsley Witten Group, Inc. PERENNIALS: APRIL 15 TO JUNE 1 SHALL BE USED FOR WATERING SEEDED AREAS. THE AREA MUST BE MAINTAINED APPROVED SUBGRADE GROUNDCOVERS: APRIL 15 TO JUNE 1 CONSISTENTLY MOIST FOR THE BEST GERMINATION RESULTS. ADDITIONAL NOTES: WATERING MAY BE REQUIRED IF PLANTING AND SEEDING OCCUR OUTSIDE OF THE NOTES: 1. FENCING SHALL BE ORANGE RESINET SM60 BARRIER FENCE “SNOW FENCE” OR APPROVED EQUIVALENT. FALL: DECIDUOUS: SEPTEMBER 15 TO NOVEMBER 15 RECOMMENDED PLANTING SEASONS. 1. SEE LANDSCAPE GRADING SPECIFICATIONS FOR TOPSOIL REQUIREMENTS. 2. CONFIRM SUBGRADES ARE CORRECT AND POSITIVE DRAINAGE IS MAINTAINED PRIOR TO 2. POST SHALL BE HOT ROLLED RAIL STEEL AND FORMED INTO A “T”. DIMENSIONS OF “T” POST SECTION, EVERGREEN: SEPTEMBER 15 TO NOVEMBER 15 PLACEMENT OF TOPSOIL. APPROXIMATELY 1 7/16” X 1 5/16” X 1/8” X 6' (SIX FEET) LONG. THE POST SHALL BE PAINTED GREEN OR PLANTING LAYOUT NOTES GALVANIZED. PERENNIALS: SEPTEMBER 15 TO NOVEMBER 15 3. NOTIFY ENGINEER/LANDSCAPE ARCHITECT FOR REVIEW OF SUBGRADE PRIOR TO PLACEMENT OF MINIMUM 2 x DIAMETER OF ROOTBALL GROUNDCOVERS: SEPTEMBER 15 TO NOVEMBER 15 THE TOPSOIL. 3. THE FENCING SHALL REMAIN IN PLACE UNTIL ALL EXCAVATION HAS BEEN COMPLETED AND THE 1. FOR AREAS WITH MIXED PERENNIALS AND/OR GRASSES (SHOWN AS HATCHED SURFACE HAS BEEN RE-ESTABLISHED LIVE STAKES: PLANTS WHILE DORMANT FROM DECEMBER 1ST THROUGH AREAS ON PLANS), DO NOT PLANT IN A PATTERN OR WITH LARGE AREAS OF THE MARCH 31ST SAME SPECIES. RANDOMLY PLANT AS INDICATED ON THE PLANTING PLANS INTO SOD DETAIL TREE PLANTING DETAIL TREE PROTECTION SMALL GROUPINGS OF THE SAME SPECIES TO CREATE A MORE NATURALISTIC NOT TO SCALE NOT TO SCALE NOT TO SCALE 9. PLANTING UNDER FROZEN CONDITIONS WILL NOT BE PERMITTED. PLANTING APPEARANCE. PLANT THE SAME PLANT SPECIES IN GROUPS OF 3-7 AND NOT BEFORE OR AFTER THE ABOVE REFERENCED PLANTING DATES WILL INCREASE LARGER THAN 7, DEPENDING ON THE OVERALL NUMBER OF PLANTINGS. THE LIKELIHOOD OF PLANT ESTABLISHMENT FAILURE. ANY DEVIATION FROM THE RETAIN SAME FINISH GRADE AFTER ABOVE REFERENCED PLANTING DATES IS UNDERTAKEN AT SOLE RISK OF THE PLANTING AS ORIGINAL GRADE BEFORE DIGGING CONTRACTOR AND IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO PROVIDE ANY ADDITIONAL MAINTENANCE AND WATERING WHICH MAY BE REQUIRED TO ENSURE SATISFACTORY PLANT ESTABLISHMENT. GENTLY HAND-LOOSEN SOIL FROM PLANT TREE PLUMB - AROUND ROOTBALL WITHOUT PRUNE BROKEN OR DEAD SEVERING MAIN ROOTS. SPREAD BRANCHES AS DIRECTED BY 10. FURNISH ONE YEAR MANUFACTURER WARRANTY FOR TREES, PLANTS, AND ROOTS OVER MOUND OF UNDISTURBED LANDSCAPE ARCHITECT GROUND COVER AGAINST DEFECTS INCLUDING DEATH AND UNSATISFACTORY SUBGRADE GROWTH. EXCEPTIONS ARE DEFECTS RESULTING FROM LACK OF ADEQUATE MAINTENANCE, NEGLECT OR ABUSE BY OWNER, OR ABNORMAL WEATHER PLANT TREE PLUMB - 3" PINEBARK MULCH. PULL MULCH 3"-6" PRUNE BROKEN OR DEAD CONDITIONS UNUSUAL FOR WARRANTY PERIOD. THE DATE OF FINAL AWAY FROM BASE OF PERENNIAL. NYLON GUY WEBBING- BRANCHES AS DIRECTED BY ACCEPTANCE OF ALL COMPLETED PLANTING WORK ESTABLISHES THE END OF REMOVE SAUCER AFTER ONE SEASON. STAPLE OR TIE TO STAKE LANDSCAPE ARCHITECT INSTALLATION AND INITIAL MAINTENANCE PERIOD AND THE COMMENCEMENT OF

THE GUARANTEE PERIOD. PLANTING DETAILS MOUND WITH EXCAVATED SOIL TO 3" NYLON GUY WEBBING- ABOVE FINISHED GRADE. STAPLE OR TIE TO STAKE 11. ALL TREES WITHIN 5'-0" OF WALKWAYS AND SIDEWALKS TO HAVE A 6'-8" 3-2"x3"xVARIES EXCAVATE HOLE TO DIAMETER 2X WOOD STAKES TO FIRST WHORL STANDARD BRANCHING HEIGHT. SCORE ROOTBALL STORMWATER RETROFITS

OF BRANCHES @ 120 DEGREE MYSTIC RIVER WATERSHED IF POT-BOUND WIDER THAN ROOTBALL. BACKFILL WOBURN, MASSACHUSETTS WITH LOAM. INTERVALS AND PLACED PLUMB 12. INSPECT ALL AREAS TO BE PLANTED OR SEEDED PRIOR TO STARTING ANY REMOVE CONTAINER 3-2"x3"xVARIES WOOD STAKES LANDSCAPE WORK. REPORT ANY DEFECTS SUCH AS INCORRECT GRADING, LOOSEN ROOTS 2 x ROOT BALL DIAM. TO FIRST WHORL OF BRANCHES INCORRECT SUBGRADE ELEVATIONS OR DRAINAGE PROBLEMS, ETC. TO THE 3" SHREDDED MULCH @ 120 DEGREE INTERVALS AND LANDSCAPE ARCHITECT AND ENGINEER PRIOR TO BEGINNING WORK. IN TREE PIT OR AS INDICATED PLACED PLUMB. COMMENCEMENT OF WORK INDICATES ACCEPTANCE OF SUBGRADE AREAS TO BE CONTAINER PLANT ROOTBALL TREATMENT PERENNIAL PLANTING DETAIL PLANTED, AND THE LANDSCAPE CONTRACTOR ASSUMES RESPONSIBILITY FOR 4'-0" Plan Set: Plan Title: NOT TO SCALE NOT TO SCALE ALL LANDSCAPE WORK. REMOVE TOP THIRD OF MIN. ROOT FLARE AT GRADE DO NOT BURY OF PILE MULCH 4'-0" BURLAP AT ROOTBALL 13. PROVIDE PROPER PREPARATION OF ALL PROPOSED PLANTED AND SEEDED MIN. REMOVE TOP THIRD OF PRUNE BROKEN OR DEAD BURLAP AT ROOTBALL AREAS PER THE NOTES AND SPECIFICATIONS. BRANCHES AS DIRECTED BY LANDSCAPE ARCHITECT 3" SHREDDED MULCH 14. ALL PLANT LAYOUT AND ACTUAL PLANTING LOCATIONS ARE TO BE FIELD VERIFIED PLANT SHRUB PLUMB IN TREE PIT OR AS INDICATED BY LANDSCAPE ARCHITECT PRIOR TO PLANTING. NOTIFY THE LANDSCAPE FIRMLY FORMED SAUCER (USE TOP OF ROOTBALL GRADE ARCHITECT AT A MINIMUM OF 48 HOURS IN ADVANCE PRIOR TO SCHEDULING ANY TO MATCH FINISH 12-18" O.C. TOPSOIL) ANGLE OF REPOSE VARIES WITH STEEPNESS OF FIELD INSPECTIONS. GRADE WITHIN 1" REMOVE TOP THIRD OF PLANT SLOPE AND SOIL TYPE 12-18" O.C. SCARIFY SIDE WALLS AND BURLAP AT ROOTBALL 3" SHREDDED

15. BALL AND BURLAP: REMOVE BURLAP AND WIRE BASKETS FROM TOPS OF BALLS 3'-0" BOTTOM OF TREE (781) 316-3438 MULCH AS INDICATED 12" PIT 4" DEEP AND FROM TOP HALF OF ROOTBALL AS INDICATED ON DRAWINGS. REMOVE MIN. ---- MIN. 2"-4" SOIL BERM PALLETS, IF ANY, BEFORE SETTING. CELL Association Arlington, MA 02476 20 Academy St Ste 306 Prepared For: Phone: Fax: Mystic River Watershed 3'-0" 16. POTTED PLANTS: REMOVE THE PLANT FROM THE POT AND LOOSEN OR SCORE 12" PLANTING SOIL MIN. MIN THE ROOTS BEFORE PLANTING TO PROMOTE OUTWARDS ROOT GROWTH INTO THE SOIL. APPROVED SUBGRADE 6" MIN. PREPARED PLANTING 17. PLUGS: PLANT UPRIGHT AND NOT AT AN ANGLE. DIG PLANTING HOLES LARGE SCARIFY BOTTOM OF SOIL MIXTURE PREPARED PLANTING ENOUGH AND DEEP ENOUGH TO ACCOMMODATE THE ENTIRE ROOT MASS. PLANT PLANTING HOLE 4" SOIL MIXTURE 2x DIAMETER OF ROOT BALL DEEP PLANT 12-18" ON CENTER PLUGS WITH NO TWISTED OR BALLED ROOTS AND WITH NO ROOTS EXPOSED PACK BACKFILL BY HAND UNDISTURBED PERVIOUS AS NOTED IN PLANT LIST ABOVE THE GRADE LINE. HAND PACK THE SOIL AROUND THE ENTIRE PLUG ROOT PERVIOUS SOIL SOIL 2 x DIAMETER OF ROOT BALL MASS. 2 x DIAMETER OF ROOTBALL 18. DIG THE THE PLANTING HOLE TO THE SAME DEPTH AS THE ROOT BALL AND TWO TO THREE TIMES WIDER. SCORE ALL SIDES OF THE HOLE, PLACE THE PLANT IN SHRUB PLANTING DETAIL PLUG PLANTING DETAIL TREE PLANTING ON SLOPE DETAIL EVERGREEN TREE PLANTING DETAIL THE HOLE SO THE TOP OF ROOT BALL IS EVEN WITH SOIL SURFACE. FILL THE NOT TO SCALE NOT TO SCALE NOT TO SCALE NOT TO SCALE HOLE HALFWAY AND THEN ADD WATER ALLOWING IT TO SEEP INTO BACK FILLED

H:\Projects\2021\21008 upper mystic river watershed\Drawings\_Woburn\21008 WOBURN LA.dwg MATERIAL. BE SURE TO REMOVE ALL AIR POCKETS FROM BACK FILLED SOIL. DO NOT SPREAD SOIL ON TOP OF THE ROOTBALL. IF SOIL IS EXTREMELY POOR, PRUNE BROKEN OR DEAD TOP OF ROOTBALL REPLACE BACK FILL WITH GOOD QUALITY TOP SOIL. AMEND THE SOIL, AS BRANCHES AS DIRECTED BY TO MATCH FINISH SEE TYPICAL PERMANENT COIR PLANT SPACING AND QUANTITIES ---- NECESSARY. LANDSCAPE ARCHITECT GRADE WITHIN 1" (508) 833-6600 FABRIC INSTALLATION DETAIL PER PLANTING PLANS PLANT SHRUB PLUMB (508) 833-3150 FOR FABRIC INSTALLATION 19. CREATE A 2" TO 4" BERM AROUND THE EDGE OF PLANTING HOLE WITH REMAINING 3" SHREDDED Survey Provided By: 90 Route 6A Sandwich, MA 02563 Phone: Fax: Dated: EQ. EQ. MULCH AS INDICATED Horsley Witten Group, Inc. SOIL TO RETAIN WATER. REMOVE TOP THIRD OF 2"-4" SOIL BERM Registration: BURLAP AT ROOTBALL 20. REMOVE ALL PLANT TAGS AND FLAGS FROM THE PLANTS. FIRMLY FORMED SAUCER 21. MULCH ALL PLANTING BEDS AS INDICATED ON DRAWINGS. UNLESS NOTED (USE TOP SOIL) ANGLE OF OTHERWISE, ALL PLANTS TO RECEIVE 2-3 INCHES OF MULCH. DO NOT PILE OR EQ. REPOSE VARIES WITH MOUND MULCH AROUND THE PLANT STEMS OR TRUNK. STEEPNESS OF SLOPE AND SOIL TYPE SCARIFY BOTTOM OF 22. TRIM BROKEN AND DEAD BRANCHES FROM TREES AND SHRUBS AFTER PLANTING. DRAFT PLANTING HOLE 4" 6" MIN. NOT FOR NEVER CUT A LEADER. DEEP

23. THE SITE IS LOCATED WITHIN THE TOWN'S AQUIFER PROTECTION DISTRICT AND PREPARED PLANTING CONSTRUCTION ADJACENT TO THE TOWN'S WELL PROTECTION ZONE, THEREFORE, DO NOT USE SOIL MIXTURE NOTES: NITROGEN CONTAINING FERTILIZERS, PESTICIDES OR CHEMICALS DURING 2 x DIAMETER OF 1. CUT THE FABRIC IN AN "X" SHAPE TO ACCOMODATE 2 TIMES THE DIAMETER OF THE USE EQUIDISTANT TRIANGULAR SPACING FOR PLANTS - FOR ACTUAL SPACING ROOTBALL UNDISTURBED ROOTBALL. Project Number: Sheet : PLANTING AND MAINTENANCE OF THE LANDSCAPING OR LAWN AREAS. SEE PLANS OR PLANTING SCHEDULE PERVIOUS SOIL 2. FOLD FABRIC BACK AND PIN DOWN TO CREATE A HOLE IN THE MAT. ADDITIONALLY, DO NOT USE PESTICIDES OR HERBICIDES CONTAINING INORGANIC NOTES: 3. DIG THE HOLE PER PLANTING DETAILS. 21008 10 of 10 COMPOUNDS (IOC) AS LISTED IN THE MASSACHUSETTS DRINKING WATER 1. PLANTING BACKFILL: 1/3 LOAM, 1/3 SAND, 1/3 PEAT, BY VOLUME. 4. AFTER PLANTING, FOLD FABRIC BACK INTO PLACE AND STAPLE DOWN AS REQUIRED 2. WHEN PLANTING ON SLOPE-MODIFY SLOPE AS SHOWN. REGULATION (310 CMR 22.06), OR SYNTHETIC ORGANIC COMPOUNDS (SOC) OR TO SECURE FABRIC IN PLACE. Sheet Number: VOLATILE ORGANIC COMPOUNDS (VOC) AS LISTED IN THE MASSACHUSETTS PLANTING SPACING DETAIL SHRUB PLANTING ON SLOPE DETAIL PLANTING IN COIR FABRIC DETAIL DRINKING WATER REGULATION (310 CMR 22.07). NOT TO SCALE NOT TO SCALE NOT TO SCALE C - 10 last modified: 06/29/21 printed: 06/30/21 by ml