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HomeMy WebLinkAboutMDC C4-2 SWPP NOTESSTORMWATER POLLUTION PLAN (SWPPP) FOR POST-CONSTRUCTION SITES 1. POTENTIALPOLLUTANTSOURCESASSOCIATEOWITHTHEPROPOSEOLANOUSE' POTENTIAL POST CONSTRUQION POLW TANTS TO INCLUDE FU EL AND OIL FROM V EHIQES AND TRASH FROM PARKING LOT USERS. 2 POSYCONSTRUQIONSTORMWATERQUALITYMEASURES: 1 NEW STRUQUML 8MP (AQUASWIRL A&4) LOCATION: REFER TO SHEET C43 DIMENSIONS: REFER TO SHEEf C34. 9ZING CALNIATIONS: REFER TO DRAINAGE REPORT �ETAILE� SPECIFlCATIONS: REFERTO �MINAGE REPORT CONSTRUQION DETNILS: REFER TO SHEEfS Q-5 1 E%ISTING DEfENTION BASIN AND WATER QUALITV BASIN LOCATION: REFER TO SHEET CA-1 AN� C3-1 DIMENSIONS:REFERTOSURVEVSHEET SPNG CALCUlAT10N5: REFER TO �RAINAGE REPORT 3. SEQUENCEDESCRIBINGSTORMWATERQUALITVMEASUREIMPLEMENTNTION' THE STRUQURAL BMP IS INSTALLED BEFORE STORM SEW ER SVSTEM IS FUNQIONAL THE E%ISTING WATER QUALITV BASIN REMAWS AQIVE THROUGHOUT CONSTRUQION. EROSION CONTROL MFASURES PREVENT POLLUTION EMERING SVSTEM. AFTER FlNAL STABILIZATION, CONTRAQOR TO QEAN STORM SYSTEM, AQUAS W IRL U NIT OF ALL DEBRIS. REFER TO SPECIFlCATIONS AND OPERATION AND MAINTENANCE MANUAL FOR ADDITIONAL REQUIREMENTS. A. STORMWATERQUALITVMEASURESTOBEIMPLEMENTEOTOPREVENTORMINIMIZEAOVERSEIMPAQS TO STREAM AND RIPARIAN HABITATS: THE RUN-0FF OF THE SITE IS BEING RE�UCE� AN� IS NRREMLV ROUTE� TOTHE �EfENT10N BASIN THAT HANOLES WATER QUANTITV MFASU RES. THE OEfENTION BASM NRREMLV AQS AS THE ONLV STORM WATER QUALITV MEAU RE ON THE 9TE, W ITH THE ADDITION OF AN ADDITIONAL STORM WATER QUALITV MEASURE, IT W ILL FU RTHER HELP MITIGATE POTENTIAL ADVERSE IMPAQS TO DOW NSTREAM STORM SVSTEMS BV FlLTERW 6 OUT HARMFUL POLWTANTS FROM STORMWATER RUNOFF. 5. AN OPERATIONS AN� MAIMENANCE MANUAL FORALL POST-CONSTRUCTION STORMWATER QUALI71' MEASURE: STORMWATER QUALI71' MFRASTRUQURE, ALONG WITH OETAILS ANO PROCEOURES FOR MAINTAING THEENTIRESTORMWNTERSV4EM ISINQUDEDINTHEOPERNTIONSANDMAINTENANCEMNNUAL CRENTED FORTHIS PROIEQ. RELEASED FOR CONSTRl1CTI0N Su6jec� �o compliance with all regula�ions 04 S�a�e antl Local Codes City of Carmel `�sv�� �\o�v�AWn.�.�� STORMWATER POLLUTION PLAN (SWPPPI FOR CONSTRUCTION SITES ��:,,��:t.��.�n�.�,,���K.���� 0512 W 03090030 COOL CREEK - GRASSV BRANCH/LITTLE COOL CREEK 2. IOENTIFlCATION OF ALL RECEIVING WATERS: ER6TING DETENTION POND/BASIN LOG4TED SOUTH OF PROIECT IN SOUTHEASTCORNEROF BUILDING LOT W HICH ULTIMATELV DISCHARGES INTO GRASSV BRANCH OF LITTLE COOL CREEK AND INTO COOL CREEK. 3. ESfIMATEOFPFAN015p1ARGEFORPOSTWNSfRUQIONWN0ITION5�10-VEAR�' 3.22 CFS 4. LOCATIONSOFSPECIFICPOINTSWHERESTORMWATERD6CHARGEWILLLEAVETHESITE STORMWATER DRAINA6E FROM THE SITE WILL BE CONVEVED TO AN E%6TW6 STORM SVSTEM TO AN EXISTING ORV OEfENTION BA9N. THIS BA9N OISCHARGE INTOTHE GRASSV BRANCH OF LITTLECOOL CREEK. S. IDENTIFICATION OF ALL POTENTIAL DISCHARGES TO GROUND WATER: NO NEW POTENTIAL DISCHARGES TO GROUND WATER. 6. SOILSMAPOFTHEPREDOMINANTSOILTVPES: REFERTO MAP ANO SOIL OESCRIPTION ON SHEEf CO-1. 12 EROSIONANDSEDIMENTCONTROLSPECIFICATIONFORINDNIDUALBUILDINGLOTS: THE SITE W ILL NOT BE SUBOIVIOE; THEREFORE, THERE ARE NO IN�NI�UAL LOTS ON THE PROPERN. REFERTOSHEEf 64 FOR PROPOSE� SITE IMPROVEMENTS. 13. MATERIALS HANDLING, STORAGE, AND SPILL PREVENTION PLNN: REFER TO THE CONSTRUCTION SEQUENCE SCHEDU LE PROVIDED IN A TABLE ON THIS SHEET. 14. CONTACTINFORMATIONFORTHETRAWEDINDNIDUALRESPONSIBLEFORSTORMWATERPOLWTION PREVENTION FOR THE PROI EQ SITE. CONTRNQOR NNME TO BE DETERMMED. 15. NRRENTREVISIONDATEONALLSHEETS: ONCE FINAL APPROVAL OF THE PROI KT IS RKENED FROM THE CITV OF CARMEL, ALL REVISIONS SHALL BE APPROVED BV THE CITV OF URMEL, AND REVISION NOTES STATW6THE REVISION NUMBER, DATE AND REV610N SHALL BE PIACED ON THE APPROPRIATE PLAN SHEETS OF THE TITLEBLOIX. ]. OESCRIPTION OF POTENTIAL POLLUTANT SOURCES ASSOCIATEO W ITH THE W NSTRUQION AQNITIES: POTENTINL POLLUTION SOURCES NSSOCINTED WITH CONSTRUQION NQNITV INQUDE: SEDIMENT IN RUNOFF FROM EXPOSED SOILS, RUNOFF FROM CONSTRUCTION MATERIALSTORAGE, AND SPILLAGE FROM CONSTRUQION EQUIPMENT AN� REFU ELING SITES CONTRAQOR SHALL CONTAIN ALL SE�IMENT BV PROPER EROSION CONTROL PRACTICES AS IN�ICATE� IN THE STORM WATER POLLUTION PREVENTION PIAN. CONTRAQOR SHALL CONTROL POLLUTION FROM MATERIAL STORAGE 8V PROPER STORAGE PROCEOURES MATERIALS THAT ARE A POTENTIAL SOURCE OF POLLUTION SHALL 8E STOREO IN CONTNINERS PROTEQED FROM ELEMENTS, OR IN THE IOBTRNRER. POLLUTION FROM REFUELING SHALL BE PREVENTED BV PROPER REFUELING PRNQICES. PROPER CONTAINMENT NND QENNUPSHALL BE EMPLOVED IF q SPILL OCNRS. 8. TEMPORNRVNNDPERMNNENTSTORMWNTERQUALITVMFASURES: A. THELOCATIONOFALLTEMPORARVSTORMWATERQUALITVMEASURESCANBEFOUNDOFSHEEf C4-1. B. THEDIMENSIONSOFALLTEMPORARVSTORMWATERQUALITVMEASURESCANBEFOUNDOFSHEET C4-1. C. OEfAILEO PREOICATIONS FOR ALLTEMPORARV STORMWATER QUALI71' MEASURES CAN 8E FOUNO ON SHEET C42. D. CONSTRUQIONDETAILSFORALLTEMPORARVSTORMWATERQUALITVMEASURESCANBEFOUND ON SHEET C42. E. ALLPROPOSEDPOLWTIONPREVENTIONMEASURESSHALLBEWSPEQEDFORDEFlCIENCIESONA W EEKLV BA515 ANO WITH W 24 HOURS OF ALL RAIN EVENTS. 9LT FENCE: WSPEQ SILT FENCE WEEKLY AND AFTER EACH STORM EVENT. IF FENCE FABRICTEARS, STNRTS TO DECOMPOSE, OR IN NNV WNV BECOMES INEFFEQNE, REPLNCE THEAFFEQED PORTION IMM EDINTELV. REMOVE DEPOSITED SEDIMENT W HEN IT RENCHES HALF THE HEIGHT OF THE FENCE AT ITS LOW EST POINT OR 6 G4USING THE FABRIC TO BU LGE TAKE G4RE TO AVOID UNDERMINING THE FENCE DURING QEANOUT. AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILRED, REMOVE THE F ENCE AND SEDIMENT DEPOSITS, BRING THE DISTURBED AREA TO GRADE AND STABILIZE. CATCH BASIN FlLTER: INSPEQ WEEKLV AND AFTER EACH STORM EVENT. REMOVE BUILT-UP SEDIMENT AN 0 REPLACE THE GEOTEMILE FABRIC AFTER EACH STORM EVENT. PERIOOICALLV REMOVE SEOIMENT ANO TRACKEO ON SOIL FROM THE STREEf (BUT NOT BV F WSHING WITH WATER) TO REOUCETHE SEDIMENT LOAD ON THIS NRB INLET PRAQICE. EROSIONCONTROLBLANKETS: DURINGVEGEfATNEESTABLISHMENT,INSPEQAFTERSTORMEVENTS FOR ANV EROSION BELOW THE BLANKET. IF ANV AREA SHOWS EROSION, PULL BAIX THAT PORTION OF THEBLANKETCOVERINGIT,AOOSOIL,RESEEOTHEAREA,RELAVANOSTAPLETHEBIANKEf. CHECK THE TREATED AREAS PERIODICALLV. STONE CONSTRUQION ENTRANCE: INSPEQ ENTRANCE PAD AND SEDIMENT DISPOSAL AREA W EEKLV ANDAFTER STORM EVENTS OR HEAVV USE RESHAPE PAD AS NEEDED FOR DRAINAGEAND RUNOFF CONTROL TOP DRE55 W ITH QEAN STONE AS NEEDED. IMMEDIATELV REMOVE MUD AND SEDIMENT TRAIXED OR WASHED ONTO PUBLIC ROADS BV BRUSHW6 OR SWEEPW 6. F WSHW6 SHOULD ONLV BE USE� IF THE WATER IS CONVEVEO INTO A SEOIMENT TRAP OR BASIN. REPAIR ANV BROKEN ROAO PAVEMENT IMMEOIATELV. CONCREfE WA5H0UT: INSPEQ �AILV FOR �AMAGE REPAIR ANV �AMAGE IMME�IATELV. MAINTAIN 12" MINIMUM FREE80AR0. CIEAN OR WNSfRUQ NEW WASHOUT ONCE EXISfING WASHOUT IS]5� F�«. 9. GENERALCONSTRUQIONSEQUENCE REFER TO THE CONSTRUQION SEQUENCE SCHEDU LE PROVI DED IN A TABLE ON THIS SHEET. 10. LOCATIONOFPROPOSE�SOILSTOCKPILES,BORROW,AN�/OR�ISPOSALARFAS: THERE SHALL BE NO PROP W ED SOIL SWIXPRES, BORRO W AND/OR DISPOSAL AREAS ON THIS SITE. 11. TEMPORARVANDPERMANENTSURFACESTABILIZATIONMETHODSAPPROPRIATEFOREACHSEASON. ALL UNPAV EO AREAS NOTEO SHALL BE SOOOEO OR MU LCHEO IN ACCOROANCE W ITH SOOOING ANO PIANTING SPECIFlCATIONS. PROJECT NARRATIVE THE PROPW ED PROIEQ CONSISTS OF THE DEMOLITION OF A PORTION OF AN EX6TING BUILDING ON THE SITE AND THE CONSTRUQION OF A NEW 5,950 SQUARE FEET BUILDING. THE PROIEQ IS LOCATED SOUTH OF MAIN STREET ON OLD MERIDIAN STREET. THE NE W ADDITION IS PART OF THE ExISTING STRIP MALL AND PARKING IS SHARED AMONG ALL USERS AN D TENANTS. AS PART OF THIS PROIECT, NO DRNEWAVS WILL BE CLOSED. NO NEW DRNEWAV NTS WILL BE CONSTRUCTED AS PART OF THIS PROIEQ THE 9TE 6 LOCATED IN A PIACE OF PREVIOUS DEVELOPMENTAND AN E%6TING DETENTION FACILITV E%6TS ON THE PROPERTV. THIS DRV DETENTION BASIN AN D W EfLAND AL50 AQS AS A STORMWATER QUALITV MEASURE A NEW STRUQURAL STORMWATER BMP IS BEING CONSTRUQED AS PART OF THIS PROI EQ. THIS ADDITIONAL BMP MEASU RE W ILL BRING THE SITE INTO COMPLIANCE PER CITY OF G4RMEL ORDINANCE DU E TO THE FAQ THAT THE SITE IS ALREADV A FULLV DEVELOPED 9TE, THE PROIEQ INCREASES GREEN SPACE AND REDUCES RUN-OFF LEAVING THE 9TE SINCE THE 9TE IS ALREADV COV ERED BV AN E%6TING DETENTION SVSTEM ANO THIS PROIEQ OOES NOT MCREASE RUN-0FF, THE EXISTING DEfENTION SVSTEM WILL CONTINUE TO FUNQION NND REGULNTETHE STORMWNTER QUNNTITV LENVING THE SITE. STORMWATER POLLUTION PREVENTION PLAN - CONSTRUCTION COMPONENT CONSTRUCTIONSEQUENCESCHEDULE i. oescaianory oF aolervnn� ao�wlnrvl souaces nssoanleo wrtr� corvslauaiory A�,���,�Es POTErvnn� Po�wnory souRCEs nssoanTEo wiTH corvsTRucnory nrnvm irvcwoE�. $E�IMENT IN RUNOFF FROM E%GOSE� $016, RUNOFF FROM CONSTRUQION MATERIAL $TORAGE, AN� SPILUGE FROM CONSTROL710N EQOIPMENTAN� RENELING SITES LONTRACrOR SHALLLONTAIN ALL SE�IMENT BV PPOPEP EPOSION CONTPOL PPACTICES AS IN�ICATE� IN THE STOPM WATEP POLW TION GREVENTION GIAN. CONTRAQOR SHALL CONTROL GOL WTION FROM MATERIAL STORAGE BY GROGER STORAGE PROCE�ORES. MATERIA6 THAT ARE A POTENTIAL SOORCE OF POLWTION SHALL BE STORE� IN CONTAINEI6 PPOTEQE� FPOM ELEMENTS, OP IN THEIOB TPALLEP. POLLUTION FPOM PEFUELING SHALL BE PRNMTC� BY GROGER REFO ELING GRALTILES GROGER LONTAINMENT ANO LLEANOG SHALL BE EMPLOVE� I F A SPILLOCCOkS. 2. SEQUENCE DESCRIBING STORM WATER QUALITV MEASURE5IMPLEMENTATION RELATNE TO LNN� �ISTU0.BING HRIV ITIES. wrvsiRuaiory PHnse�weaFicnamnes oR EROSIONLONTROLGRAClILES�' CONSTROQIONOPERATIONS PPECONSTPUCTIONAQIONS BERFORCONSTRUQION,SCNE�ULEA �EVALOATION/PPOTECfIONOF PRELONSTROCrIONMEETINGWITHTHETOWNOF IMPORTANTSITECHARAQERISTI6) CAPMELENGINEEP. BEFORE CONSTRURION, EVAWATE, MARK, AN� PROTEQ IMPORTANT TREES AN� ASSOOATE� POOTINGZONES,UNI4UEAPEAS�EG.WETLAN05) TO BE PRESERVEq ON-SITE SEPTIC SYSTEM ABSOPPTION FlElDS, AN� VEGETATION SOITABLE FOk Fl LTEk STkIPS, ESPECIALLV IN PEkIMETEk AkEAS. LANOLLEARINGANOGRAOING BEGINMAIORCLEARINGAN�GRA�INGAFTER �currirvc/FiwrvWslocrcPwrvc,canoirvc, wnnuirvclnercevseoiMervinrvoRurvoFF �RAWS,SE�IMENTTRAGS,BARRIERS, MEASORES.CLEARBORROWAN��ISPOSALAREAS orveRsorvs,suRFnceRoueHervirve� nsrveeoeo.irvsrnunooinorvn�corvTRo� MppEpASUryRE$q Ap$ GpRpA���ppINpGp GppROqGRE$$E$ AN� BOIIDINGCANSTkOQION�B0IL�INGS,OTIIITIES, INA�LL�NETCE�SAPYEPOSIONANO PAVING) SE�IMENT CONTROL PR4CrICESAS WORK TAKES PUCE WN�SCAPINGAN�FlNALAABILI2ATION�TOP STABIIIZEALLOPENAkEAS,INCLO�ING SOILING, TREESAN�SHROBS,PERMANENT BOPPOW ANOSPOILAPEAS. SEEOING,MULCNINGSOOOING,PIPPAP) PEMOVETEMPOPAPVCONTPOLMEASOPESAN� STABILI2E. 3. STHBIL¢E CONST0.UQION ENT0.HNCE LOCHTIONS HN� SPECIFlCHTIONS (HTHLL POINTSOFINGRESSANDEGRE55) CONSTPOCTION PHlSE�WECIFCAQIVITIES OP EROSIONCONTROLPRACrlCES�' CONSTROCrIONOPERATIONS LONSTROCrIONALCE55 STABILIZEBAPEAPEASIMME�IATELVWITHGPAVEL �CONSTPUQIONENTPANCES, ANOTEMGORARYVEGETATIONASWORKTAKESGLAL LONSTROLTION ROOTES,Ep01GMENT �pTILIZEE%ISTING PAVEMENTSOPFACESTHPOOGHOO PnRwrvenRens) coNSTeucTioN� 4. SEDIMENT CONTROL MEHSURES FOR SHEET FLOW HREHS CONSTPUQIONPHASE�SPECIFlCAQIVITIESOP CONSTPUCfIONOPEPATIONS EROSION CONTROL PRACrlCES�' SORFACESTABILI2ATION(TEMGORARYANO qPPLVTEMPOPAPVOPPEPMANENTSTABILIZATION PERMANENTSEE�ING�MOLCHING�SO��ING�RIP MEASURESIMME�IATELVONALL�ISTURBE�AREA$ RAG) W HERE W ORK IS �ELAVE� OR CAMPLETE�. �NO AREA IS TO BE LEFT UNCOVERE� MORE THAN 5 �AVSJ 5.SEDIMENTCONTROL MEHSURESFORCONCENTRHTEDFLOWHREHS CONSTPUCTIONPNASE�SPECIFlCACfIVITIE50P CONSTPOQIONOPEPATIONS EROSION LONTROL PRAL710E5�* STORMWATERCONVEVANLESYSTEM WHEPENECESSARV,AABILI2ESNALESASEAPLYAS �STABILIZE�SWAIES,STORM�RAINS, POSSIBIE. INSTALLPRINCIPALLONVEVANLESYSTEM INLETAN�OOTLETPPOTECTION) WITHRUNOFFCONTROLMEASURES.WSTALL REMAIN�ER OF SVAEM AFTER GRA�ING. 6. STORM SEW ER WLET PROTECTION MEHSURE LOCATIONS HND SPEQFlCHTIONS PEFEP TO STOPMWATEP POLWTION PPEVENTION PUN AN� INLETSTPOQOPE FlLTEP �ETAIL ).RUNOFFCONTROLMEHSURES(EG.DNERSIONS,ROCKCHECKDHMfi.SLOPEDRHWS,ETC. 8. STORMWPTER OUTLET PROTECTION SPEQRCPTIONS CONSTROCTIONPHASE�SPECIFlCACrIVITIESOR �ONSTRURIONOPERATIONS EPOSION CONTPOL PPAQICES�' kONOFFWNTkOL(�NEk510N5, INSTALLGRALTILESAFTER GRWLIGALSEOIMENTiRAGS PEPIMETEPOITCHES,OAMS,OUTLET qN�BARRIERSAREINAALLE�BOTBEFORELAN� PROTECTION) GPA�ING INSTALLA�oITIONAL PUNOFFCONTPOL MEASORES �0 RIN6 6RA�IN6 AS NEE�E�. 9. GRN�E STNBILIZATION STRUCTURE LOCNTIONS NN� SPEQFICFTIONS CONSTRUQIONGHASE(SGECIFlCAQIVITIESOR CONSTPUQIONOPEPATIONS eRosory wrviRo� PRnaices)W SEOIMENTBARRIERSANOTRAGS(BASIN INAALLPkINOPALBA51N5AFTEkWNAkOQION5ITE TRAPS,SILTFENCES,OOTLETPROTEQION) ISASSEAEO.INSTALLAOOITIONALTPAPSANO BARRIERS AS N EEOEO OORING GRA01 NG. 10.LOCATION, DIM E NSIONS, SPECIFlCATIONS AND CON4RURION DETAILS OF EACH STORM WATER QUALITV MEASURE REFEfl TO $TOflM WqTER POLLUTION PflEVENTION P W N AN� �ETAIL$ 11.TEMP00.H0.V SU0.FHCE STHBILIlATION METH0�5 HPP0.0P0.1HTE F00. EHCH SEHSON (INQUDE SEQUENCING) 12PE0.MHNENT SU0.FHCE STHBILIlATION SPECI FlCHTIONS (I NCLU�E SEQUENCING) REFER TO SEASONAL SOIL PROTECTION CHART 13.MHTERIHL HHNDLING HND SPILL PREVENTION PLHN CONTRAQOR SHALL CONTAIN ANY SGILL OF MATERIALS W SUCH A MANNER TO GREVENT LEAKAGE INTO A STORM SEWER OR �RAINWAV. WNTAQTHE IN�IANA �EPARTMENTOF ENVIRONMENTAL MnrvnGeMemllmeMl oFFlce oF Lnrvo (tun�m eMekGervcv Femorvse sernorv, meM zaMouk ma� LI NE AT BBB233-0I05, OR 3ll23}]]p5 OPON �ISLOVERV OF AN ALLI�ENT TO �ETERMINE I�EM'S INVOLVEMENT AN � PPOCE�OPES FOP CLEANOP. 14. MONIT00.1NG HN� MHINTENHNCE GUI�ELINES F00. EHCH P0.0POSE� ST00.M WHTE0. QUALITV MEfSURE. * MONITORING AN� MAINTENANCE �l) I NSPEQ PRAQICES AN� REPAIR AS REQOIRE� AT LEAST ONCE A weeK, � � z� wirnim m nouas oc eveav i/a� anim Evemr 16. SOIL STOCKPILE AN D STAGING AREA sEE sHEEr uoo Foa �ocarioN. au oisruaeEo caouNo sHau Nor eE �EFr io�E wa nnoaE rHaN z WEEKS WITHOOTSEE�ING FOkSTABILIIATION.501LSIDIXPIlE55HALLBESOkkOON�E� WITHSILT Fervce nrvo seeoeo i F rvoT useo wiTHiry z weercs. �.J z rH' 1 ' a �r^ vJ z O U Z Q 0 d' J W W L � 0 � Ow �.^ � YT I V 1 N � V � �_J I� W W z H-1 � /�1 W � c m 'v L � � � O L!'1 Li 1 � N l"I � Q �"� V c-I N � � � C � .� 3 � c O N � � � C L � � �f+ � Z N 3 H 7 0 ~ O O fl-� Q V � n • �n fo m 3 m�r 3 rn � a 3 N M 0 � � Z � � � V CONSTRUCTION DOCU M ENTS v P�QE �v��ON PQQR� C�NS� N�� F�R Z O H d s N 0 F Q G s m � Z \ \ � V o 06vyW'. �� Oo w aja_ Z ' ¢ o; � � > w v'?;y`�: d d :� � �j/�Q..e.,.e�Q�t``�: � � STORMWATER POLLUTION PREVENTION NOTES $[/{�E: AS NOTED DATE: 19 Au�usr zai9 PROJECT #: 19� Ps cze DRAWN: Nsv COORD: Nav APPROVED: Nsv C4-2 DATE: O��Z��ZO