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Home My WebLink AboutC3.2-STORMWATER-POLLUTION-PREVENTION-NOTES-Rev.0SWPPP for CONSTRUCTION SITES: 1. HYDROLOGIC UNIT CODE HUC-14: j 05120201090040, Location: Longitude: W 861DI / Latitude: N 39'57'51" 2. RECEIVING WATERS The proposed development will flow throw a proposed on -site storm sewer system and discharge into the existing master planned wet detention pond system just east of the project site via existing storm sewer infrastructure in Lakefront Court. After exiting the existing wet pond detention pond system, stormwater then travels to the WR Fertig Drain and ultimately discharges into Carmel Creek. 3. ESTIMATED PEAK DISCHARGE EXISTING Pre-consaruction:10-yeru ar n-off 1.39 ore 100-y ear run-off 1.96 ore PROPOSED (PRIOR TO DETENTION) Post-construclion:10-year run-off 4.71 cis 100-year run-off 6.77 cis •'These numbers were calculated using ICPR computer software. 4. STORMWATER DISCHARGE POINTS The proposed development will Flow throw a proposed on -site storm sewer system and discharge into the existing master planned wet detention and system just east of the 9 9 P P Ys N project site via existing stone sewer infrastructure rucsec n Lakefront Court. The existing wet detention and Lake 3 of Carmel Science & Technology Park woe master planned i The Schneider o e005 and approved in yawls to the R Fri oxide he existing wet CorporationPP 9 9 pond detention Card system, storm water than travels to the River. Fertig Drain and ultimately discharges into Carmel Creek which then dumps in the White River. 5. POTENTIAL DISCHARGES TO GROUNDWATER None 6. SOILS MAP & DESCRIPTIONS CrA Mni n MITI MmB2 CrA MnnB2 CrA Nj CrA CrA CrA MmBP CrA MmB2 CrA Br M,�e2 MmB2 Br SOILS MAP SCALE: 1" = 120' NORTH 9. STORMWATER QUALITY SEQUENCE STEP if 1: CONTACT THE CITY OF CARMEL/CLAY TWP AND HAMILTON COUNTY SURVEYOR'S OFFICE TO SCHEDULE A PRE -CONSTRUCTION MEETING. STEP k 2: POST AT THE ENTRANCE OF THE SITE THE (NOT) AND THE CONTACT INFORMATION OF THE PERSON RESPONSIBLE FOR CONSTRUCTION ACTIMTES. STEP r 3: DESIGNATE A PERSON TO BE RESPONSIBLE FOR THE SIZE INSPECTIONS AFTER EACH 1/20 RAIN AND A MINIMUM OF ONCE EACH WEEK. STEP its 4: INSTALL CONSTRUCTION ENTRANCE & INLET PROTECTION ON EXISTING INLETS. STEP $ 5: INSTALL SILT FENCE ALONG THE PERIMETER OF THE SITE WHERE NOTED. STEP $ 6: ROUGH GRADE SIZE AND INSTALL TEMPORARY SEEDING IN ALL AREAS TO REMAIN IDLE FOR 15 DAYS OR MORE. STEP M 7: INSTALL REMAINING SUBSURFACE INFRASTRUCTURE. STEP M 8: FINAL GRADE SITE. STEP i 9: INSTALL LANDSCAPING AND FINAL SEEDING. STEP N 10: REMOVE ALL SEDIMENT CONTROL PRACTICES ONCE THE SITE IS STABILIZED. STEP / 11: ROLE THE NOTICE OF TERMINATION (N.O.T.) WITH IDEM. NOTE: INSTALL TEMPORARY SEEDING AFTER A SPECIFIC STAGE OF CONSTRUCTION HAS BEEN COMPLETED (TEMPORARY OR FINAL) WERE AREAS WILL BE IDLE OF CONSTRUCTION ACTIVITIES FOR A PERIOD OF 15 DAYS OR MORE. 10. SOIL STOCKPILE, BORROW AND/OR DISPOSAL A soil stock pile will not be required due to the limited scope of the project. SOILS DESCRIPTIONS & LIMITATIONS 1. Brookston Silty Clay Loam (Or - 5.3% Site) The Brookston series consists of very deep, poorly drained soils formed in up to 20 inches of silty material and the underlying loamy till in depressions on till plains and moraines. Permeability is moderate in the subsoil and moderately slow in the underlying material. Slope ranges from 0 to 2 percent. Subject soil does not present any foreseeable limitations to the proposed development. 2. Crosby Silty Loam (SEA. - 34.8% Site) The Crosby series consists of very deep, somewhat poorly drained soils that are moderately deep to dense till on till plains. These soils formed in loamy till that can be copped with u to 22 inches of loess or silt material. Permeability is moderate or moderate) slow in and above the P Y Y Y argillic horizon and slow or very slow below the argillic horizon. Slope ranges from 0 to 2 percent. Subject soil does not resent an foreseeable limitations to the proposed development. P Y P P P 3. Shoals Silt Loam (5h - 0.2% Site) The Shoals series consists of very deep, somewhat poorly drained soils formed in alluvium on flood plains. Slope ranges from 0 to 2 percent. Permeability is moderate in the solum and moderate or moderately rapid in the substratum. Subject soil does not present any foreseeable limitations to the proposed development. 4. Miami Silt Loam Mm - 59.6% Site) The Miami series consists of moderately well drained soils formed in as much as 18 inches of loess or silty material and in the underlying loamy till on till plains. They are very deep soils that are moderately deep to dense till. Permeability is moderate or moderately slow in the solum, and slow or very slow in the underlying dense till. Slope ranges from 0 to 60 percent. Subject soil does not present any foreseeable limitations to the proposed development. 7. POTENTIAL CONSTRUCTION POLLUTANTS Potential P nlutants sources relative to a construction site may include but are not limited to material and fuel storage areas, fueling locations, exposed ads and leaking vehiclee/equipment. Potential pollutants that may appear at the site due to construction waste, sips ant, p but are not limited to diets fuel Y PP Dint and solvents, equipment repair gasoline, concrete And concrete washout, solid waste, sediment, p products, anti -freeze and fertilizer.. 8. TEMPORARY & PERMANENT STORMWATER QUALITY MEASURES A. Location: see sheet C4.0 B. Dimensions: see sheet C4.0 C. Detailed Specifications: see sheet C4.0 - C4.2 D. Construction Details: see sheet C4.1 - C4.2 E. Monitoring and Maintenance Guidelines: The existing wet pond detention system needs to be kept free of traM and debris. All proposed lawn areas should be adequately watered and maintained with no bare spots to provide a thickly vegetated turf base to filter out particles. Monitor the existing wet pond and sediment levels and remove any trash or debris. The maintenance for any proposed post -construction water quality measures will be provided for by the building owners' on -site property maintenance staff. EROSION CONTROL SCHEDULE EROSION CONTROL MEASURE * MAINTENANCE INSTALLATION SEQUENCE STONE ENTRANCE AS NEEDED PRIOR TO CLEARING AND GRADING SILT FENCE WEEKLY, AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING TREE PROTECTION WEEKLY AFTER STORM EVENTS AND AS NEEDED PRIOR TO CLEARING AND GRADING TEMPORARY DIVERSIONS WEEKLY AFTER STORM EVENTS AND AS NEEDED ALONG W1H ROUGH GRADING RIP -RAP HORSESHOE RIP-R WEEKLY AFTER STORM EVENTS AND AS NEEDED IMMEDIATELY AFTER DETENHON BASIN CONSTRUCTION PERMANENT SEEDING WATER AS NEEDED AFTER FINISH GRADING EROSION CONTROL MATTING WEEKLY AFTER STORM EVENTS AND AS NEEDED AFTER FINISH GRADING SEED SOD & LANDSCAPE AROUND WATER AS NEEDED AFTER FINISHED GRADING AROUND FINISHED UNITS UNITS FINISHED REMOVAL OF INLET PROTECTION 1 N/A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED OF SLT F NCE REMOVAL I E N A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED REMOVAL OF RIP RAP HORSESHOE I N A I AFTER ALL AREAS DRAINING 10 THESE AREAS ARE STABILIZED * - SEE CHART FOR MAINTENANCE REQUIREMENTS Party responsible for monitoring and maintaining SWEET procedures as outlined; To be Determined Stormwater Pollution Prevention measures to be Inspected/cleaned weekly and after any 241hr.-1/2-Inch rainfall event as necessary. RELEASED FOR CONSTRUCTION Subject to compliance with all regulations of State and l oral Robot City of Carmel �Vf GsllJb��//\\��wA4NADML DATE: \ 03/27/19 GENERAL NOTES 1. CONTRACTOR SHALL INSTALL ALL REQUIRED SILT FENCES, SILT TRAPS, TREE PROTECTION AND INLET PROTECTION FOR EXISTING INLETS PRIOR TO THE START OF ANY EARTH MOVING OR STRIPPING. 2. CONTRACTOR SHALL INSTALL A STONE CONSTRUCTION ENTRANCE OR SOME OTHER DEVISE PRIOR TO THE START OF EARTHWORK AS NECESSARY TO PREVENT SOIL FROM BEING TRACKED OR WASHED INTO EXISTING ROADWAYS. 3. LAND ALTERATIONS WHICH STRIP THE LAND OF VEGETATION, INCLUDING REGRADING SHALL BE DONE IN A WAY THAT WILL MINIMIZE EROSION. WHENEVER FEASIBLE, NATURAL VEGETATION SHALL BE RETAINED AND PROTECTED. AS GRADING IS DONE. INSTALL SILT TRAPS, SILT FENCES, SLOPE DRAINS. TEMPORARY DIVERSIONS AND OTHER RUNOFF CONTROL MEASURES AT APPROPRIATE LOCATIONS TO KEEP SEDIMENT CONTAINED ON SITE. 4. ALL DISTURBED AREAS SHALL BE SEEDED AND STRAW MULCHED AS SHOW ON THE PLANS IMMEDIATELY AFTER COMPLETION OF GROUND ACTIVITY. FOR LARGE PROJECTS, THIS SEEDING SHOULD BE COMPLETED IN PHASES AS THE DIFFERENT AREAS OF THE SITE ARE COMPLETED. 5. PERMANENT AND FINAL VEGETATION OR STRUCTURAL EROSION CONTROL DEVICES SHALL BE INSTALLED AS SOON AS PRACTICAL UNDER THE CIRCUMSTANCES. 6. THE DURATION OF TIME WHICH AN AREA REMAINS EXPOSED SHALL BE KEPT TO A PRACTICAL MINIMUM DEPENDING UPON THE WEATHER. IF CONSTRUCTION ACTIVITY IS TO CEASE FOR MORE THAN TWO WEEKS, THE DISTURBED AREAS SHALL BE TEMPORARILY SEEDED. 7. ALL STORM SEWER INLET PROTECTION DEVICES SHALL BE PUT IN PLACE AT THE TIME EACH INLET IS CONSTRUCTED. e. THE CONTRACTOR SHALL MAINTAIN EROSION CONTROL MEASURES AND DEVICES DURING CONSTRUCTION AND UNTIL SILTATION OF THE STREETS AND STORM SEWERS WILL NO LONGER OCCUR. 9. ONCE ONSITE EROSION AND SILTATION OF THE STREETS AND STORM SEWERS WILL NO LONGER OCCUR, THE CONTRACTOR SHALL REMOVE AND DISPOSE OF THE TEMPORARY EROSION CONTROL DEVICES. 10. THESE GENERAL PROCEDURES MAY NOT COVER ALL SITUATIONS. REFER TO EROSION CONTROL PLANS FOR SPECIFIC NOTES AND ADDITIONAL DETAILS it. EROSION CONTROL TO COMPLY W1TE INDIANA 327 IAC AND RULE ,y5, INDIANA HANDBOOK FOR EROSION CONTROL IN DEVELOPING AREAS, AND HENDRICKS COUNTY/TOWN OF BROWNSIBURG STANDARDS AND SPECIFICATIONS. 12. ADDITIONAL EROSION CONTROL MEASURES MAY BE REWIRED IN THE FIELD BY THE INSPECTOR. 11. TEMPORARY & PERMANENT SURFACE STABILIZATION Temporary seeding will be used as temporary surface stabilization measures if areas are to be left idle for more than 15 days. See sheets C4.0-C4.1. Permanent seeding will be used as permanent surface stabilization measures. The details and specifications for each stated measure are on sheets C4.0-C4.1 and within the final landscape plan. 12. EROSION CONTROL FOR INDIVIDUAL BUILDING LOTS There are no individual building lots on this project 116OLrsII1 arawon a►pill [era►u�y111■aINILYA I N11111 Expected materials that may appear at the site due to construction activities include, but are not limited to petroleum products. fertilizers, paint and sdvente and concrete. Materials shall be stored in the designated material storage area. Spill prevention for vehicle and equipment fueling shall conform to the following practices: vehicle equipment fueling procedures and practices are designed to prevent fuel spills and leaks, and reduce or eliminate contamination of slormwoter. This can be accomplished by using ofhite facilities, fueling In designated areas only, enclosing or covering stored fuel, implementing spill controls, and training employees and subcontractors In proper losing procedures. Limitations: Onsile vehicle and equipment fuelln should only be used where It is impractical P P 9 P9 Y P to smtl vehicles and equipment ofhite for fueling. Sending vehicles and equipment offsite should be done in conjunction with a Stabilized 9 9N Construction Entrance/Exit. ma Implementation: Use offsite fueling stations as much as possible. Discourage "topping -off sp fuel tanks. Absorbent spill cleans materials and ill kite should be available in fueling areas and on Holding trucks and should be disposed of properly P P sp 9 9 P P P Y iaftermpermeable use. Drip papa or absorbent pees should be used during vehicle and equipment ills. ,unless the fueling is performed over an impermeable aerials in a promptly and d fueling area. Use Absorbent materials on o small spills. Do not quip down rc bury the spill. Remove the transport absorbent materials promptly and dispose of properly. Avoid mobile fueling of mobile t construction in prior equipment around the site; rather, tranapat the equipment to protected from fueling areas. Train employees and subcontractors in proper holing and cleanup procedures. Dedicated fueling areas should be protected from storm water moon and runoff, and should be located at least 50 ft away from downstream drainage facilities and watercourses.will Fueling must d i performed on level- rode area. Protect fueling areas with berms and dikes t revert moon runoff. and to contain P g g p sup9Pills. Nozzles used in vehicle and equipment fuelln equine beequipped wits s automatic shutoff a control ground e. Fueling operations should not be left unattended. Federal, elate. and local requirements should be observed for any stationary above grountl storage tanks. Vehicles and equipment should be inspected each Keep a use for leaks. Leaks should be repairedialimmediately Immediately or problem vehicles or equipment Mould be contaminated from Me project site. Keep ample supplies of spill cleanup materials write. Immetliately clean up spills and dispose of coot scifid w soils. Properly P S ill r reduce for slid waste shall conform to the dater f radices: Solid waste management pro procedures designated and radices are designed P P 9 P 9 P P 9 to prevent or , arranging the discharge of disposal, a to atormwater from solid or construction waste by to providing tad from waste collection areas and containers, arranging for regular disposal, and training employees and subcontractors. Solid waste denials in from trees and shrubs removed during Ions searing, demolition of existing sWrap m, and building labor lass feces and materials including wood, paper, and plastic Scoop or ainers building materials ors, co scrap metals, rubbed plastic, glass pieced and masonry Construction Domestic wastes including food containers such as beverage cane, coffee cups, paper bags, plastic wrappers, and cigarettes. parts. Construction waster including brick, mortar, timber, steel and metal designated wa. pipe and electrical cuttings. nontrash-ho equipment parts. Styrofoam and other package construction materials. Select Inspect cl mpa waste collection areas onaite. Inform trash -hauling contractors that you will accept only watertight tlum containers for onaite use. Ins act sum afore for leaks and repair on tlum star that is not reverti loss Provide s he sate number of additional with Title or covers mot can bi placed over the container any keep rain out ti to prevent site of wastes when it is windy. Plan fa andifwind conditions and more frequent idle Burin the since erosion hose of construction. Collect site trash daily, tt eciM a sure rain 9 pickup 9 p Y• especially 9 Y and windy conditions.e(sued Remove this Solitl waste promptly since erosion antl setliment control tlevices tend to collect litter. Make aura Mai toxic liquid wastes faroils, solvents and paints) and chemicals (acids, on the c struction curing ea" d mp) are not nto disposed of a tluming co trator. fa construction debris. Do not hose out dumpsten on the c. Clean site. immediately if a cont cleaning to the trash hauling contractor. Arrange for regular waste collection before containers overflow. Clean u is. Soli let s a container does ill. Make core 9 9 9 P Y sp that construction waste is a facilities removed, and r es an s only at authorized ate disposal areas. Solid waste storage areas should be located at least a e from Drainage facilities and watercourses and should not be located in areas prone to flooding or pending. Inspect construction waste area regular for regular waste collection. Spill prevention forr concrete washout Mall conform ton the following practices: Store dry and wet materials node cover, away from drainage areas. Avoid mixing excess amounts of fresh concrete. streets, Or trams. D concrete trucks offsite a in designated areas only. Do not wash out concrete trucks into storm drains, open ditches, streets, dr ins, ope. it not allow texcess concrete to be duped onaite, except adesignatedbcons areas. Locate washout areas be at least 50 ft from storm drains, open ditches, . water bodies. s i not allow runoff from this area by constructing o temporary pit arbthen d area large enough fa liquid and solid waste. Wash out wastes into the temporary pit where the concrete can eel, be broken up, and then epos disposed properly. Avoid creating runoff pi draining water to a bermes co level area when washing concrete to remove fee particles and expose the aggregate. Do not coats sweepings from exposed aggregate concrete into the street he atom drain. Collect and return sweepings ll aggregate base stockpile or disposehomeowners in the trash. The cleanup parameters shall conform to Me fallowing practices: The kdeveloper / homeowners associationmenresly ce continually kept informed maintain lists of continua contractors and available Vac -trucks. tank pumpers and other equipment reek accessible for cleanup maintenance In personnel a continually ware of list nil available absorbent materials and cleanup supplies should re kept on site. All maintenance is plan. nil will be made aware e t of cures for prevention of spills. They will be inthe prevention en the requirements and procedures outlined in this plan. They will be kept abreast of could end ngeelopmenh or new information on the prevention of spills and / or necessary alteration to this plan. When spills otter whits al puree a and human life and this became primary concern, the discharge of the life sating protection will function will ed of In out n the local police antl ore departments. Absorbent materials, whits are used In cleaning up spilled materials, will l disposed of In a manner subject to the approval of the Indiana Department of Environmental Management. Flushing of spilled material with water will not be unless so authorized by the Indiana Department of Environmental Management. Spill prevention for vehicle and equipment maintenance shall conform to the following practices: Prevent or reduce the contamination of stamwater resulting tram vehicle and equipment maintenance by running a "dry and clean site". The beat option would a a perform maintenance r for ate an offsite facility. If this option is not Available then work should cleaning performed it designated areas only, while ucover for constrict stared outside checking o fa leaks and s ills And containing sto and deanai spills immediately. Theseprocedures providing 9 P 9 9 up P Y are suitable a all construction projects where should onaite yore am" wh is it is impractical fa storage and maintenance of heavy equipment and maintenance vehicles. anaite vehicle and equipment / equip ant should oil be used where it is ion ractical to send vehicles and equipment offsite for maintenance Y P and repair. Sending vehicles n equipment ofhite Mould by donee conjunction with pollution. stabilized iti st hat c entrance in exit. Out door vehicle e i ui meet maintenance is ateor r ail nil eat source of atormwateruipmActivities that can contaminate atormwater equipment a potentially 9 include engine repair and n changing or replacement located to Flaway and outdoor equipment storage and parking (engine Fluid leaks). if r maintenance moat o nsiunof a designated areas. located away from drainage st Dedicated etl maintenance areas should be protector from atormwater should and used dug and should be located nt least 50 k from downstream drainage facilities and coats courses. Drip pans or absorbent patla sable ur ucetl during de vehicle and equipment maintenance toc that involves fluids, unless the maintenance work it performed over and impermeable and surface re s are dedicated maintenance area. Place a stockpile of spill deans materials where it will be readily accessible. P P P P Y All fuelingtrucks and fueling areas are required to have spill kits and/or use other spill"Sides devices. Use absorbent materials le small 9 q P / P protection spilt. Remove the absorbent materials promptly and clean; of properly. Inspect onside vehicles and equipment daily to startup for leaks, and repair immediately. Dee vehicles and equipment e dean lu not allow excessive buildup of all and reran. Segregate ate and recycle wastes P Y PP 9 9 9 Ya such as greases, used oil or oil filters, antifreeze, cleaning solutions, automotive batteries, hydraulic and transmission fluids. sin Provide cleanup p containment and pans or fa these sheeting materials If attired ces ter. r all employees and subcontractors n proper maintenance and spill cleanup procedures Drip pans when plastic sheeting should t placed under all vehicles and equipment placed on docks, barges, other structures over wiser bodies when the vehicle or equipment it planned to be idle for more than 1 hour. Properly dispose of used oils, fluids, lubricants, and spill cleanup materials. Properly dispose of Or recycle used batteries. Do not place used oil in a comforter pour into A atom drain or water course. Properly dispose of used ails, fluids, lubricants, and will cleanup material. Don nottburybury tires. Repair leaks of fluids and oil immediately. Spill prevention for fertilizers shall conform to the following practices: Fertilizer's used will be applied only in the minimum amounts recommended by the manufacturer. ill Once applied, fertilizer will be worked into the soil to limit exposure to atom water. The contents o/ any partially used bags of fertilizer will be transferal to sealable plastic bin to awes spills. so Spill prevention for paint and solvents shall conform to the following practices: All containers will er tightly sealedof and ding t when not manufacturers' for use. EXCESS PAINT WILL NOT BE DISCHARGED TO THE STORM SEWER SYSTEM but will be properly disposed of according to manufactures' innor State or local regulations. Spill preventiontion and cleanup shall conform to IDEM form 327 IAC 2-6 and the Local fire Department Mall be contacted in the case of a material spill occurring. 14. CONTACT INFORMATION AMY SUMMERS - DERMATOLOGY, INC. (317)-410-0056 - Amy.Summenl3dermatologytnc.com INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT EMERGENCY REPONSE: 1-888-233-7745 CARMEL/CLAY DEPARTMENT OF COMMUNITY SERVICES: 317-571-2417 CARMEL CLAY Two. FIRE DEPARTMENT: 317-571-2600 (ADMIN.); 911 FOR EMERGENCIES HAMILTON COUNTY SURVEYOR'S OFFICE: 317-776-8495 EROSION CONTROL MEASURES MAINTENANCE REQUIREMENTS SET FENCE MAINTENANCE REQUIRDiENTS I. INSPECT THE SILT FENCE PDOODICLLLY AND AFTER EACH STORM MEND 2. IF FENCE FORD RS STARTS TO DECOMPOSE. OR IN ANY WAY BECOMESBECOMESFA IEMOME M, REM SE THE AFFECTED I EDITION HALF MLY. ]. ITS HO DEPOSITED SF IS CA MIEN li PEACHES HU THE HEIGHT 6 iK FENCE AT ITS CARE PANT OR IS ERM9NC THE FORDSSE DU INLC{, 4. AFTER CARE TO AYOD UNDERMINING ME FENCE BORING AWEAKBRIZ D,WT. R B. AEND iRE 0]NDENOUTING DRAINAGE AREA HAS BEEN STABUIEOE RND S THE FENCE AND SEDIMENT DEPOSITS, BRING THE DISTURBED AREA TO GRADE, AND SiABIU2E. STORM INLET PROTECTION MAINTENANCE REQUIREMENTS I. INSPECT FEQUENRY FOR DAMAGE BY VEHICULAR TRArFIC, AND REPAIR IF NECESSARY. 2. INSPECT AFTER EACH STORM EVENT. ]. REMOTE SEDIMENT, WITHOUT RUSHING, MIEN IT PEACHES HALF THE HEIGHT OF THE BARRIER. 4. DEPORT REMOMD SEDIMENT MERE IT WLL NOT ENTER STORM DRAINS. STORM SEWER INLET PROTECTION MNNTENANGE REQUIREMENTS L AFTER FACT STORM EMMR REMOVE THE SEDIMENT AND REPLACE ME STORM INLET PROTECTION BAG 2. PERIODICALLY REMOVE SEDIMENT AND TRACKED -ON WE FROM ME STREET, W1 T FLUSMNG TO REDUCE THE SEDIMENT LOAD ON THE INLET PROTECTION. 3. INSPECT PERIDDICALLY FOR DAMAGE AND REPAIR; KEEP GRATES Had OF OUR& 4. WHEN THE OUNIMBUIING DRAINAGE AREA HAS BEEN STABILIZED, REMOM ME STORM MIET PROTECTION BAG AND ANY SEDIMENT, AND DEPME OF PROPERLY. EAU90N CONTROL ELAMEI (SURFACE APRIED) MAINI Ma REQUIREMENTS I. WRING MKETATIM ESTABUSHMENT, INSPECT AFTER STORM EVENTS FOR ANY MOM BELOW THE BLANKET REVISION RECORD IREVI DATE I DESCRIPTION DES BY APP BY 1 07/27/18 REVISIONS PER T.A.C. COMMENTS EATS EAG SWPPP for POST -CONSTRUCTION: 2 IF ANY AREA SHONS EROSION PULL BAG% VAT PORTION OF THE BANKET WMRING IT, ADD 90L RE -SEED THE AREA, AND RELAY AND STONE THE BIANKET. J. AFTER VEG:TATIVE OMMUSHOMENT, CHECK THE TREATED AREA PERMY. TEMPORARY GRAVEL CONSTRUCTION ENTRANCE MAINIENANGE REQUIREMENTS 1. POTENTIAL LANDUSE POLLUTANTS Potential pollutant sources Nat may appear at the site due to proposed land use activities. but ore not limited to vehicles. exposed soil and trash. Potential pollutants inclutle, but are not limited to fertilizer. oil, hydraulic/broke fluid. grease. diesel fuel, gasoline. anti -freeze. auto soup and fertilizer. 2. POST -CONSTRUCTION STORMWATER QUALITY MEASURES: A. Location: see sheets C2.2 & C3.0 S. Dimensions: see sheets C2.2, C&O, & C6.0 C. Sizing Calculations: see Drainage Calculations 0. Detailed Specifications: see Meets C10.0 & C10.1 E. Construction Details: see Meets C3.1 C3.2 CHOI & C10.1 A new offline 4' diameter Downstream Defenders by Hydro International along with it's diversion manhole will serve as the man project site post -construction atormwater quality measures. The proposed 4' diameter Downstream Defenders' hydrodynamic separator and the new 5' diameter diversion manhole how been designed to treat the stormwater runoff from the full developed 9 Y P subject site. The post -developed entering the existing runoff will also travel to the master planned areas 6' diameter Aq should before entering the existing wet detention pond. All proposed lawn areas and landscaping should be adequately arteretl and maintained with no bare spots to provide a thickly vegetated turf base to fifer out particles. Remove any trash and debris from Storm Structure #BMP and /101. The maintenance for one proposed post -construction water quality measures will be provided for by the owners' on -site property maintenance staff. 3. SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION The post -construction stomwater quality measures that have been proposed for this project are a P 9 Y pop P N 4' Did. Downstream to Defenses: and 5' 6' Diversion Manhole. The post -developed the stamwater runoff will also transit fo the master planned 6' diameter A l be irl before entering the existing wet p 9 9 9 Sequence pond. Final per nwaterquality qualify measures will t implemented as l schedule is finalizes. Sequences of aformwafer quality items are described in the erosion control schedule in number (9). 4. STORMWATER QUALITY MEASURES TO BE IMPLEMENTED TO PREVENT OR MINIMIZE ADVERSE IMPACTS TO STREAM & RIPARIAN HABITATS: The proposed poet -construction BMPs as well as the abundance of plush turf and landscaping will generate very little if any pollutants that could cause harm to the downstream wet pond detention system, it's stream outlet. or riparian habitats. 5. AN OPERATION & MAINTENANCE MANUAL FOR ALL POST -CONSTRUCTION STORMWATER QUALITY MEASURES: Please see the attached O&M manual for the proposed structural BMP's: a 4' diameter Downstream Defender15 by Hydro International and the 5' diameter Diversion Manhole. An 0&M Manual for the existing AquaSwirl atormwater quality structure and the existing wet detention pond done by The Schneider Corporation in 2006 and approved in July 2007 is on file with the City. I. INSPECT ENTRANCE PAD AND SEDIMENT DISPOSAL AREA MBQY AND AFTER STORM EVENTS OR HEAVY USE. 2. RESHAPE PAD AS NEEDED FOR DRAINAGE AND RUNOFF CONTROL 3. TOPDFE55 WIN DEAN STONE AS NEB O. 4. IMMEDIATELY REMOVE MUD AND SEDIMENT TRACKED OR WAGED ONTO PUBLIC ROOS BY BRUSHING OR SMEFING. RUSHING SHOULD ONLY BE USED IF THE WATER IS CONVEYED INTO A SEDIMENT TRAP OR BASIN. S. REPAIR ANY BROKEN ROM PAVEMENT IMMEDIATELY. PROJECT DESCRIPTION The project proposes a new 11,6273 SF medical office building that will be owned by Dermatology. Inc. Additional improvements to the project site will include the associated drainage, parking. P P P e P 9• sidewalk and unlit infrastructure. This project lot is specified tt as "Lot 4 of Carmel Science & Y P 1 inHamillPark" and is located at the southwest comer at s; antl r. Lakefront Court construction -sac Technology a Hamilton Count Indiana. The entire lot totals land acres however theur proposed construction Y• activity e.Thassociated with the building, arm surface, and Technology will be loci 11 w approximately water acres. The site lies within the Carmel Science & Technology Park p Block 11 with the d in water management to bean masts planned in Lion b The Schneider Corporation and approved in 9 9 P Y ay PP October, 2006, do include storm water detention and post proposed drainage stamwater d will how These Ions one calculations analyze the existing and ro osed tlrain« a sasses and will Mow that P Yz 9 P P 9 P the proposed Improvements will have no negative effect on drainage condition in the area. P op P 9 9 STORMWATER QUALITY DESCRIPTION The proposed development will discharge via a proposed on -site stone sew" system and subsequently flow to the previously constructed storm sewer system flowing under Lokefront Court. The storm water will then be routed east to the existing wet detention pond system, which has been master -planned to provide storage for the post -developed subject site. Before entering the existing wet pond. the atormwater will first enter an on -site diversion storm manhole structure (Storm Structure #101) which will rout the proposed atormwater runoff to the proposed hydrodynamic stormwote unlit unit 4' diameter Downstream Defender's b Hydra International . eaequity ( Y Yd ) then discharge will travel through the 4' diameter Downstream DefenderT by Hydro International and then dischar a into the existing storm sewers under Lakefront Court And then enter an existing 6' 9 9 9 diameter gquaSwirl before entering the existing wet detention pond. CONSTRUCTION ENTRANCE INFORMATION The location of the construction entrance is an Meet C4.0. The construction entrance specifications are an Meet C4.1. SHEET FLOW SEDIMENT CONTROL Silt fence, temporary seeding will be used as erosion control measures for sheet Flows. The location, details, and specifications for each stated sediment control measure is on sheets C4.0-C4.1. CONCENTRATED FLOW SEDIMENT CONTROL Sediment control measures for concentrated flow areas are not needed for this project site. All concentrated flows will be released into the existing atom sewer system in Lakefront Court which direct atormwater to the existing wet detention pond. INLET PROTECTION LOCATIONS AND SPECS FlexStorm "Catch-11" filters will be used to protect all surface inlets. The location, details, and specifications for each stated sediment control measure is on sheets C3.0-C3.1. RUNOFF CONTROL MEASURES The runoff control measures are One same as those listed for sheet and concentrated flow control The details and specifications of eats runoff control measure are an sheets C3.0-C3.1. OUTLET PROTECTION SPECIFICATIONS Ssamwaser outlet protection location and specifications can be found on sheets C3.0-C3.1. 6 O 1 d (D Cq FU) >E! o Wl~ I Ol HW f CC co qI.4 a I w Q `a�MO �! ) do Lc /100 W /Oy j O a/il�w0 c r W W Q V-c q c ,n I-1 tn2 /--�I W s - o �O5) CY) z sees U E col o � U J M O U D_ G LCIS �zi, :\ G `r o �. �EOAsrEq 1'(s P� - • No PE1040365B : it .o ;• Pp STATE OF Z •• :'�'OI AN: • •20or NAL M4A11111111\\\\ DATE: 07/20/2018 DWN BY: KPB CHKD. BY: EAG SCALE: N/A DATE: 07 2'0^^18 V1 W N CY) O O Z a fF{ v z >�~j 0 t-a Q F-I •oz W U z � WW I� U W OWU -j / wr.ffWrz U� a U) O �z a OW�w W o� Ln l� N (Y.l O i~^^ Vi PROJECT NUMBER r)ER.001 DRAWING NUMBER C3m2 SHEET 8 OF15