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
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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.
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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