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Home My WebLink AboutC4.2 - 180622SWPPP for CONSTRUCTION SITES: 9. STORMWATER QUALITY SEQUENCE 1. HYDROLOGIC UNIT CODE STEP M 1: CONTACT THE CITY OF CARMEL AND HAMILTON COUNTY SURVEYOR'S OFFICE TO SCHEDULE A PRE -CONSTRUCTION MEETING. HUC-14: A 05120201090010. Location: Longitude: W SERG 45"; Latitude: N 39591 STEP gY 2: POST AT THE ENTRANCE OF THE SITE THE (N01) AND THE CONTACT INFORMATION OF 2. RECEIVING WATERS THE PERSON RESPONSIBLE FOR CONSTRUCTION ACTIVITIES. STEP {p 3: DESIGNATE A PERSON TO BE RESPONSIBLE FOR THE SITE INSPECTIONS AFTER EACH 1/2" Stoemwater from the site will be collected by on -site subsurface storm sewers, RAIN AND A MINIMUM OF ONCE EACH WEEK. routed through an existing storm water detention basin located just south of the property and discharged to the East through the Legacy open area/wetlands and STEP ip 4: INSTALL CONSTRUCTION ENTRANCE & INLET PROTECTION ON EXISTING INLETS. discharging to White River. STEP If 5: INSTALL SILT FENCE ALONG THE PERIMETER OF THE SIZE WHERE NOTED. 3. ESTIMATED PEAK DISCHARGE STEP N 6: ROUGH GRADE SITE AND INSTALL TEMPORARY SEEDING IN ALL AREAS TO REMAIN IDLE FOR 15 DAYS OR MORE. EXISTING Pre-conatruction:2-year run-off 3.68 the 10-year run-off 5. 63 efa PROPOSED Post-construction:10-year run-off 9. 87 as 100-year run-off I3 91 cfs These numbers were calculated using the Rational Method. 4. STORMWATER DISCHARGE POINTS Sexual wear drainage returns Vora me proposed commumon activity asideo letl with me new May Sd,Od Gym and STEM building, sodden of parking spaces l adding landscaping to the existing land area, and extending Equality Blvd. will remain as they currently exist today with sheet Now caeded oni via the proposed dam serer catch basins and writingdetention and. Stoma water mass from he proposed construction active a dated wilt the new parking let P P ap0 Y ant P 9 b Its Westof hisproposed building will Escalated via sbrtn wamrcamM1 basins wilt Lbeunace storm sewer pipes rcu4tl to Use existing 5bnn wa4v tldeMiM fadlily bcietl juri sand cf U4 prcpeM1y. 5. POTENTIAL DISCHARGES TO GROUNDWATER None 6. SOILS MAP & DESCRIPTIONS 1. Dickey Silt Loam (OrAj: The OUR ey series consists of verydeep, well commit mils molars deep or verydeep Be expereous statute Sandy and gravelly omwash. The Gaddy soils Goal in as much as 51 cm G20 inctiesp of Was or sift material and in the underlying'loam oengine. They a sc commonly on dream le. The and al mr M1 lairs, and less commonly Y ey reLm Y p Y ofdepending ending an and edcatu Slops renGea from O to SO is medL Well high in. e i pdemid v r surface the u isaryi negligible b high o main on slope. hydraulic Is min Mau a tin me sad. has high in the n ep 9 ap Y Y Y 9 tryunvarying to Me op Permeability is moderate in velum and ter rapid in be untlere instead. The w ostructurallimeomyash), Y Y P N 9 Rome tomes Lnswam Merman seasons moisture content that can be WNolletl wpm soilmmmcaem treatments lure or ash. ( r 1 rAgo] I1111r:I Will] 16�1:11I111N100all 1lllFAR STEP it 7: INSTALL REMAINING SUBSURFACE INFRASTRUCTURE. STEP 8: FINAL GRADE SITE. STEP N 9: INSTALL LANDSCAPING AND FINAL SEEDING. STEP 10: REMOVE ALL SEDIMENT CONTROL PRACTICES ONCE THE SITE IS STABILIZED. STEP # 11: FILE THE NOTICE OF TERMINATION (N.O.T.) WITH IDEM. NOV: INSTALL TEMPORARY SEEDING AFTER A SPECIFIC STAGE OF CONSTRUCTION HAS BEEN COMPLETED TEMPORARY OR FINAL ERE AREAS WILL BE IDLE OF CONSTRUCTION ACTIVITIES FOR A PERIOD OF 15 DAYS OR MORE. ) WH Potential pollutants sources relative to a construction site may Include but are not limited to material and fuel v r storage areas fueling locations exposed soils and are n vehicle ui meat. Potential pollutants that may appear at 9 9 p 9 /eq P P Y PP the site due to construction a, point include, but are not limited it diesel fuel, gasoline. concrete and concrete washout. edid waste, sediment, paint and rive h equipment repair from the anti -freeze and fertilizer. In asour ndtpervious aver oleo Community Drive morta be protected from the washout stated potentialpollutant sources existing p p 9 Y P Y p and the following: concrete pour (ties associated, smortar mixing, sediment, antl washout from saw -cuffing concrete proximity t etc. Listing map activitiesalngCo with these potential pollutant sources should NOT occur within close proximity to the existing pefoow paver along Community Drive. The pervious pa limits of disturbance brim are problem. on the wot side of the site; therefore, protecting the Community Drive pttNou. pavers should not be a problem. 8. TEMPORARY & PERMANENT STORMWATER QUALITY MEASURES A. Location: see sheet C4.0-C4.1 B. Dimensions: see sheet C4.0-C4.1 C. Detailed Specifications: see sheet C4.0-C4.2 D. Construction Details: see sheets C4.1-C4.2 E. Monitoring and Maintenance Guidelines: All stammerer collection basins need to be kept free of trash and debris. All proposes lawn areas should be adequately base to and out painetl with no bare spots to provide a thickly vegetated turf base to filter out particles. Monitor the stormwater structures and BMP tlebris level and remove any trash or debris collecting in the bottom of each structure. Remove all trash or debris that accumulates in the parking areas and building service court. The street arkin lot should be swept and kept free of sediment carried in b vehicles. A dr /P 9 P W Y Y absorbent material such as "kitty lifter" s "floor dry should be used u soak a liquidsnew left behind by thei vehicles. The maintenance for the proposed poet staff. coon water quality measures will be provided for by the building owners' on -site property maintenance staff. 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 MALL 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 SHOWN 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. S. PERMANENT AND FINAL VEGETATION OR STRUCTURAL EROSION CONTROL DEVICES SHALL BE INSTALLED AS SOON AS PRACTICAL UNDER THE CIRCUMSTANCES. 6. THE DURATION OF TIME MICH 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 PROTECTOR DEVICES SHALL BE PUT IN PLACE AT THE THE EACH INLET IS CONSTRUCTED. S. 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 11. EROSION CONTROL TO COMPLY WITH INDIANA 327 IAC AND RULE /5, INDIANA HANDBOOK FOR EROSION CONTROL IN DEVELOPING AREAS, AND HENDRICKS COUNTY/TOWN OF BROMSBURG STANDARDS AND SPECIFICATIONS. 12. ADDITIONAL EROSION CONTROL MEASURES MAY BE REQUIRED IN THE FIELD BY THE INSPECTOR. 10. SOIL STOCKPILE, BORROW AND/OR DISPOSAL DISPOSAL OF EXCESS SOIL SHALL BE TRANSPORTED TO AN APPROVED LOCATION. EROSION CONTROL SCHEDULE EROSION CONTROL MEASURE * MAINTENANCE INSTALLATION SEQUENCE STONE ENTRANCE AS HEEDED PRIOR TO CLEA=I1 I kADING SILT FENCE WEEKLY AFTER STORM EVENTS AND AS NEEDED PRIOR TO Cv.='I I'hADING TREE PROTECT ON WEEKLY AFTER STORM EVENTS AND AS NEEDED PRIOR -0 f ;._ I.:' LHALING TEMPORARY DIVERSIONS WEEKLY AFTER STORM EVENTS AND AS NEEDED ALONG I -..°.)Nu PERMANENT SEEDING WATER AS NEEDED AFTER fl I I. EROSION CONTROL MATTING WEEKLY AFTER STORM AFTER FIN h -mall- INLET PROTECTION WEEKLY AFTER STORM EVENTS AND AS NEEDED AHIER EACH INLET IS INSIALLED SEED SOD & LANDSCAPE WATER AS NEEDED AFTER FINISHED GRADING AROUND FINISHED UNITS REMOVAL OF INLET PROTECTION N A AFTER ALL AREAS DRANING TO THESE AREAS ARE STABILIZED REMOVAL OF SILT FENCE N A AFTER ALL AREAS DRAINING TO THESE AREAS ARE STABILIZED .- err rUADT CAD uAIAITCRIAMrr DCAIIII)MENITS RELEASED FOR CONSTRUCTION PPP procedures as outlined To be Determined Subject to compliance with all regulations :o be Inspected/cleaned weekly and after any 24hr.-1/2-Inch .d ma. ."A L.....A P.A.. City d Carmel �VT�tDaVDNWA� DATE: \ 06/17/19 EROSION CONTROL MEASURES MAINTENANCE REQUIREMENTS SILT (DICE MAINTENANCE REQUIREMENTS 1. INSPECT ME SILT FENCE PERIODICALLY AND AFTER EACH STORM ETEfHT. 2 IF FENCE FABRIC TEARS, STARTS TO DECOMPOSE, OR IN ANY WAY BECOMES INEFTECTVE REPLACE ME AFFECTED PORTON IMMEDIATELY. 3. REMOY DEP03TED SEDIMENT WHEN IT PEACHES HALF FEE HEIGHT OF ME FENCE AT ITS HONEST PDINT OR IS CAUSING THE FABRIC TO BULGE. 4. TAKE CARE TO AMD UNDERMINING THE FENCE DURING CLEAN CUL S AFTER THE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED REMOVE THE PENCE AND SEDIMENT DEPOSITS, MING THE DISTURBED AREA TO GRADE, AND STABII STOMA INLET PROTECTON MAINTENANCE WMIREMMB 1. INSPECT FREQUENTLY FOR DAMAGE BY MEHIQUVR TRAFFIC, AND REPAIR IF NECESSARY. 2 INSPECT AM PION STORM EVENT. 3. REMOVE SEDIMENT, MMOIT RUSHING, WHEN IT REACHES HALF THE HOEHT OF ME BARRIER. ♦. DEPOSIT REMOVED SEDIMENT WHERE IT WILL NOT ENTER STORM DRAINS STORM SEWER INLET PROTECTION MAINTENANCE REQUIREMENTS 1. AFTER EACH STORM EVENT, REMOVE ME SEMMOTT AND REPUCE THE STORM INLET PROTECTON BAG 2 PERIODICALLY REMOME SEDIMENT AND MACNFILOM SOIL FROM ME STREET, WITHOUT RUSHING, TO REDUCE THE SEDIMENT LOAD ON ME INLET PROTECTON. 3. INSPECT PERIODICALLY FOR DAMAGE AND REPAIR; KEEP GRATES FISE OF DEEMS. 4. WHEN ME CONMIBUTNG DRAINAGE AREA HAS BEEN STABILIZED, REMOVE ME STORM INLET PROTECTOR BAG AND ANY SEDIMENT, AND DISPOSE OF PROMRLY. TEMPORARY & PERMANENT SURFACE STABILIZATION Temporary seeding and/or grovel will be used as temporary surface stabilization measures. See sheets C4.0-C4.2. Permanent seeding and/or nursery sod will be used as permanent surface stabilization measures. The details and specifications for each stated measure are on sheets C4.0-C4.2 and within the final landscape plan (by others). 12. EROSION CONTROL FOR INDIVIDUAL BUILDING LOTS Erosion control for individual building lots is provided on this project 13. MATERIAL HANDLING AND SPILL PREVENTION Expected matendis that may appear at the site due to construction activities include, but ate not limited to petroleum products, fertilizers, dint and solvents and concrete. Matends shall be stored in the designated a a natetl material store rea. P 9 9 Spill prevention for vehicle and a ui meat fueling shall conform to the following practices: vehicle equipment fuelin procedures and SP P equipment 9 SI PSI practices are designed u prevent fuel spills and leaks, antl reduce or eliminate contamination of sting w ill c This can be accomplished by usingsubcontractors facilities fueling in designated areas only, enclosing si covering stored fuel implementing ill controls and Where n employees 9 9 Y• 9 9 � p 9 ap 9 and rid vehicles sin ui proper fueling procedures. Limitations: ides vehicle and equipment fuelin should only conjunction used where if is impractical v P g vg r v to send vehicles and equipment offsite for fueling. Bending vehicles and equipment offpos ffi. be tlme in opping-ion with a Stabilizes Construction Entleanup ma Implementation: and spill kits Use should be fueling stations as much as possible. Discourage should off" sp fed tanks. Absorbent spill cleanup materials and spill kits shoultl d available in fueling areas and ue fueling trucks, and should be disposed of properly after use. Drip pans w absorbent pass garea. should be sees during vehicle and equipment fueling, unless the fueling is performed over ean impermeable surface it a promptly and d fueling area. Use absorbent materials on small spills. Do not hone Gown around bury the spill. Remove the transport materials rom tl and dispose ofproperty. areas. en . rain mobile fueling u mobile ors i proper equipment around the site; rather, P p Y P P P Y 9 transport the equipment to designated from fueling areas. Train employees and should be in proper fueling and cleanup procedures. Dedicatee fuelin areas shouts be protected from storm water ninon and runoff and should to located at least 50 ft awe from es to prey drainage, 9 P Y runoff, and contaiureea. Fueling must be performed on lquipme tf fueling Protect fueling areal with ammo and dikes t prevent ninon, runoff, and to contain spills. Nozzles used in vehicle one equipment fueling equine en equipped with s automatic shutoff to control drips. Fueling operations should not be left unattended. Federal, stole, and local requirements should be observed for any stationary above ground storage tanks. Vehicles and equipment should be projected e. day of use for leaks. Leaks should be repaired immediately or problem vehicles or a equipment should be contaminated from the project site. Keep ample supplies o/ spill cleanup materials onaite. Immediately clean up spills and r ere Spill of contaminated soils. property S ill or for disc waste shall conform to the following practices: oast waste management pro procedures antl practices are designed v v 9 p 9 p p to reveal er reduce the fr rag a of pollutants so atormwatar from aolitl subcontractors. construction waste b roger tlesi natetl waste collection areas p 9 p Yp 9 9 antl containers, (ranging for regular disposal, ans training employees ana onstruction.Solis waste generates from treed and shrubs removes during r s Bearing, demolition of existing structures, and building construction. Packaging materials inducing wood paper, and plastic. Scrap or surplus building average inducing scrap metals, rubber, plastic, glass pieced and masonry Construction Domestic wwtea inducing food container such as beverage cans, coffee cups, paper bags, plastic wrapper, and cigarettes. Construction wastes package brick, mortar, timber, steel and metal eel waste pipe and electrical cuttings, non -hazardous equipment parts, Styrofoam and other package construction moster on materials. Select designated du ter wrote collection areas r any. Inform trash -hauling contractors that you will accept only watertight eumpaters for olidite use. Inspect can be pia for leaks and repair any dumpster Nat is not watertight. Provide an adequate number of container with lies or coven that can b i placed over the demolition to keep min out ti n. prevent lose of wetted when it is windy. Plan for anditwind containers and more frequent pickup during the demolition phase a constriction. Collect site trash doily, especially during foiny and windy condition(. Remove this solid waste promptly since erosion and sediment control devices tend to collect litter. Make are that toxic liquid wastes awed oils solvents and spats and chemicals airier pesticides,additives c compounds) are not disposed of o dauling o traitor. or construction lad waste c not hose out tlu (paten o the construction immediately Leave dumpster cleaning does the trash hauling contractor. Arrange for regular waste collection before containers overflow. . Clean r immediately s a container as spill. Make aura That constructionfrom wears is collected removes. and disposed and of only at authorized located disposal areas. to waste storage areas should be locates at steal area ff from drainage facilities and watercourses and should not be locatetl in areas prone fo flooding or pending. Inspect construction waste area regularly. Arrange for regular waste collection. Spill prevention for concrete xc washout shall conform to Ma following practices: Store dry and wet materials under cover, away from drainage areas. Avoid mixing excess amounts of Great concrete. Perform washout ofD not all trucks offside or in designated areas only. Do not wash out concrete trucks into storm Grains, open ditches, dstorstreets, or streams. it not allow terexcess concrete to be l duped un onaite, except a designated by areas. Locate washout areas at least 50 R from strnor drains, open ditches, rn water out war s i not allow runoff from this area by constructing a temporary pit n bermes area large enough for Item and solid woofer Wash out wastes Into the temporary pit where Life concrete can set, m broken up, one then expose t properly. Avoid not runoff pi draining water to a bttmee or level area when steel concrete to remove floe particles and expose the aggregate. Do not curet sweepings from exposed aggregate concrete into the street he clean drain. Collect and return sweepings ll aggregate base stockpile or dispose in the trash. The cleanup parameter atoll conform to the following practices: The developer / homeowners equipment re shall ce continuallyiblfor c kept rated, operations. Intad tion of qualified oontrated land available Vac -trucks, tank pumpers and other equipment readily accessible for cleanup maintenanIn addition, a continually updated list of available prevention materials and cleanup supplies should be kept on site. All maintenance personnel will be l be kept a e techniquesof re for prevention d spills. They will be informed of the requirements and procedures outlined in this plan. They will be kept abreast of arrant developments or new information primary the prevention of spills and / w necessary protection to f this plan. When spills occur he to alcould pot ceendanger ahuman depa life and this become primary concern, the used in cleaning of iM1e life saving protection function will disclosed carried out n iM1e local police and fire departments. Absorbed materials, whit are used in cleaning up spilled materials, will be with weer of in a manner subject le the approval of the Indiana Department of Environmental Management. Flushing of spilled material with water will not be equipment unless so a shall co fo the Indiana Department ce : Prevent o Management. Spill prevention for vehicle and equipment maintenance shall conform to the following practiced: Prevent or reduce the contamination of stanninwater resulting from vehicle and equipment maintenance by running a "dry and clean site". The beat option would areas to perform maintenance r far im materials an offside facility. If this option is not available Then work should cleaning performed it designated areas only, while are suitable rover for material. stores outside, checking anon for leaks and spills, and containing and deaning up spits Imeavy. equipment These procedures are suitable on all equipment projects where should oly b yore area a necessary for storage one maintenance of heavy equipment one maintenance Valdese. and vehicle and equipment maintenance shoultl only be used where it Is impractical to send vehicles and equipment o exi for Out door one repair. Sending maivehicles / equipment entails should by none e f sit conjunction with nbilizeG construction entrance in exit. Out stow vehicle e equipment maintenance is o potentially significant t source of atormwataruipmeforage a that can contaminate peaks). If P Y 9 pollution. Include engine repair and service, Changing w replacement to fluids, and outdoor equipment storage and parking (engine fluid leaks). If maintenance must occur onaite, use designated areas, located away from drainage do courses. Dedicated maintenance ores uses. be protester from ant pad er ninon and used du and shaded be located nt least en R from downstream drainage unless and water coupes. Drip pane w over and made should ur uaed during dedicated and equipment maintenance work that involves fluids, unleda the maintenance work is performed and impermeable surface re s dedicated maintenance area. Place a stockpile d spill cleanup materials where it will be readily accessible.amin All fueling trucks and fueling areas are required to d di Will kilo and/or use other spill protection and equipment Use nt oilyatabsorbent materials to smolt spills. Remove the ely. Deep materials and equip and dispose of propedy. Inspect onaite vehicles antl equipment roily to startup for leaks. and repair immediately. Deep vehicles and equipment clean; lu not allow excessive buildup of oil and grease. transmission rfa and recycle wastes, such as secondary coma, used oil or oils for, antifreeze, Cleaning solutions, automotive batteries, d sublic antl transmission Fluids. Prnce cleaupp containment and covers for these materials if stored onaite. Train employees and equipment placed in proper maintenance and spill deans procedures. Drip and when Iodic sheath should t laced under all vehicles and a a meat laced on dispose barges, other v v P P P 9 Y p q P P 9• structures over water bodies when the vehicle or equipment is planned to be tte for more than 1 hour. oilInProperly dispose of used oils, fluids, storim drain and spill deans materials. Properly dispose of or recycle used batteries. Do not lase used oil In sum seer w our Info a P p p Y sip yr P p P storm wain or water court. propedy Dispose of used oils, Fluitla, lubricants, and spill cleanup materials. Don not bury tiro. Repair leaks of fluids l prevention oil tionforfertilizers immediately. Spill prevention for fertilizer shall conform to the following practices: Fertilizer's used will be applies only in the minimum amounts recommended by she manufacturer. Once applied, fertilizer all be worked into the soil to limit exposure to storm water. The contents of any Oft101 used bogs Of fertilizer will be transferal to f m sandal folio bin r OVice spills. partially 9P P Spill fuse. EX for Bat M solvents B DI conform t0 MG following practices: Sa: All but will a Will er tightly sealedof co stording t when not required ure use. EXCESS PAINT WILL NOT BE DISCHARGED TO THE STORM SEVER SYSTEM but will be ro en dis osed of accwdin to 9 P P Y P 9 manufacturers' pre Instructions a ea up s Or IOc01 regulations. BOOM Spill illo prevention and cleans shall con/oral to IDEM form }27 IAC 2-6 and the Local Fire Deportment shall be contacted in the case of P P P j a material will occurring. 14. CONTACT INFORMATION RITA HAFNER - THE PLAY SCHOOL at LEGACY, INC. - 14454 COMMUNITY DRIVE, CARMEL, INDIANA 46032 - 317-590-4426 INDIANA DEPARTMENT OF ENVIRONMENTAL MANAGEMENT EMERGENCY REPONSE: 1-888-233-7745 CITY OF CARMEL STORM WATER ENGINEERING - 317-571-2441 CARMEL/CLAY DEPARTMENT OF COMMUNITY SERVICES: 317-571-2417 CARMEL CLAY TWP. FIRE DEPARTMENT: 317-571-2600 (ADMIN.); 911 FOR EMERGENCIES HAMILTON COUNTY SURVEYOR'S OFFICE: 317-776-8495 ER09M CONTROL BLANKET (SURFACE APPDED) MMNTENARCE REQUIREMENTS 1. DURING VEGETATVE ESTABLISHMENT. INSPECT AFTER STORM EVENTS FOR ANY EROSON BLOW TIE BVNKET 2, IF ANY AREA SHOWS EROSION. PULL BACK THAT PORTIN BE THE BLANKET COVERING IT, ADD SOIL RE -BID THE AREA AND RELAY AND STAPLE THE BLANKET. 3. AFTER T£GETATIE ESTABUSHMENT, CHECK THE TEAM AREA PERIOIICALLY. TEMPORARY GRAVEL CDHSIRUCTON ENTRANCE MAINTENANCE REQUIREMENTS 1. INSPECT ENTRANCE PAID AND SEDIMENT DISPOSAL AREA WEEKLY AND AFTER STORM ME OR HEAVY USE 2 RESHAPE PAD AS NEEDED EON DRAINAGE AND RUNOFF CONTROL. 3. TOPORESS WIN CLEAN STONE AS NEEDED. 4. IMMEDIATELY REMOVE MUD AND SEDIMENT TRACKED OR WASHED ONTO PUBIC ROADS BY BRUSHING OR SMEEPNG. RUSHING SHOULD ONLY BE USED F ME WATER IS CONMEEU INTO A SEDIMENT TRAP OR BASIN. 5. REPAIR MY BROKEN ROAD PAYMENT IMMEDIATELY. REVISION RECORD IREVI DATE I DESCRIPTION IDES BY I APP BY I SWPPP for POST -CONSTRUCTION: 1. POTENTIAL LANDUSE POLLUTANTS Potential pollutant sources that may appear at the site due to proposed land use activitles, but are not limited to vehicles, exposed soil and trash. Potential pollutants include, but are not limited to oil, hydraulic/brake fluid, grease, diesel fuel, gasoline, anti -freeze, auto soap and fertilizer. 2. POST -CONSTRUCTION STORMWATER QUALITY MEASURES: A. Location: see sheet C4.0 B. Dimensions: see sheet C7.0 & C7.1 C. Sizing Calculations: see Legacy Post- Construction Stormwater Master Plan D. Detailed Specifications: see sheet C4.0 & C7.0 E. Construction Details: see sheet C4.0 & C7.0 Fillies TO BE UTIL17ED ON THIS PROJECT INCLUDE Existing stormwater quality BMP( per Legacy Post -Construction Stormwater Master Plan prepared by Williams Creek Consulting, Inc. on October 5, 2012. A 2' sump in the final structure (100) prior to discharging into the detention swale will also serve as an additional water quality BMP for the subject site. All sfonnw ro r collection basins need to be kept free of trash and debris. All proposed lawn areas should be adequately waterer and maintained with no bare spots to provide a thickly vegetated turf base to filter out particles. Monitor the slornwater structures and BMP debris level and remove any trash or debris collecting in the bottom of each structure. Remove all Gaeh or debris that accumulates in the parking areas and building service court. The street/parking lot should be swept and kept free of sediment carried in by vehicles. A dry absorbent material such as "kitty litter" or "floc dry" should be used to soak up liquids left behind by vehicles. The maintenance for the proposed post -construction water quality measures will be provided for by the building owners' on -site property maintenance staff. 3. SEQUENCE DESCRIBING STORMWATER QUALITY MEASURE IMPLEMENTATION Existing stormwatar quality BMPs are to be utilized during this project par Legacy Post-Constuctiore Stornwafer Master Plan prepared by Williams Creek Consulting, Inc. on October 5, 2012. Details can be found in The Legacy Post -Construction Master Plan is attached with the Drainage Report. 4. STORMWATER QUALITY MEASURES TO BE IMPLEMENTED TO PREVENT OR MINIMIZE ADVERSE IMPACTS TO STREAM & RIPARIAN HABITATS: Existing stormwatar quality BMPs are to be utilized during this project per Legacy Post -Co eduction Stormwoter Master Plan prepared by Williams Creek Consulting, Inc. on October 5, 2012. Details can be found in The Legacy Poet -Construction Master Plan is attached with the Drainage Report. 5. AN OPERATION & MAINTENANCE MANUAL FOR ALL POST -CONSTRUCTION STORMWATER QUALITY MEASURES: See 0&M Manual located in The Legacy Poet -Construction Storm ncter Master Plan prepared by Williams Creek Consulting, Inc. on October 5, 2012. PROJECT DESCRIPTION The meet proposes mand STEMleamin building to demidin devel L a m rt locatetl at me southwest camP P Poses(rewgymndEu io rg g aw eg gId pe y er of she and STOW Drive and Equality BIM. fall m exte In addiction mare will boa trees parking Id to ma wed d me postal Play School me West antl STEMbuilding and Equality91M.will be edended pprovide aaessbme drive inb me property. This pmjedis located on m4 West sided Gang sauna! Gave in Hamipcn Cody, a Id adding The germander WndfuLeian ill beYasMcng a wpm me new b7acres parking Id, peeing landscapingaround iset ofinstlpmpenY,andaeemedamwatain damsel willbeeiduebingapproximatelyt7acres x. The addrsee improvements all caned oft south fTheaMpavemenct,Lees,cypropes one drainageinNadredve typal Radial existing seamwaeer ddenUan facility based just south of The May Sdn01 d Legacy property. STORMWATER QUALITY DESCRIPTION Existing stormwater quality BMP( are to be utilized during this project per Legacy Post-Conatucton Stormwater Master Plan prepared by Williams Creek Consulting, Inc. on October 5, 2012. CONSTRUCTION ENTRANCE INFORMATION The location of the construction entrance is on sheet C4.0. The construction entrance specifications are on sheet C4.1. The construction entrance is specified to use a new gravel drive leading West to the parking lot expansion area. SHEET FLOW SEDIMENT CONTROL Silt fence, temporary and permanent seeding. nursery cud, and erosion control blankets 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-C4.2. CONCENTRATED FLOW SEDIMENT CONTROL Sediment control measures for concentrated flow areas are not needed for Nis protect site. The existing dry detention same located south of the project area will address pre/post construction sediment control. Details can be found in the Legacy Post -Construction Strnmwater Master Plan prepared by Williams Creek Consulting, Inc. INLET PROTECTION LOCATIONS AND SPECS The location, details, and specifications for atom inlet protection bag measures are on sheets C4.0-CC2. RUNOFF CONTROL MEASURES The runoff contra measures are the some as those listed for sheet and concentrated flow control. The details and specifications of each runoff control measure are on sheets C4.0-C4.2. OUTLET PROTECTION SPECIFICATIONS Stormwater outet protection specifications are not needed for this project site. We are connecting Into an existing atone sewer system that has established outlet protection. U z z IL _ 0 W U y o Q1 w A 00 00 O N Mesa M 0 F. o W a _ v a0 xU)s o a �a�LL UU,W C0 l� .a o o lIJ Ln W 0 ��W V E Q�z L QH =U E DO y�o^ W 3U F-I ci La 01QY"WS .O.• tp i it M PE10910647 •: iL .o wP STATE / OF , 8/01 h 2 DATE. 06/22/2018 DWN BY: KPB CHKD. BY: BSC SCALE: N/A DATE: 06 22 18 E' 4 C/) Fit W E- O O 7 U FI O N�N �I O H Q'wm E�' /z\ W IX CO UQ't �/� W � Wz¢ z ell �z 2 F I -a U W Ri` Or -H 1� O ed- Q J /U41- /�/�~ VL 1� Fit w A'N/ F�r-I x °'^ V{ PROJECT NUMBER TPS.007 DRAWING NUMBER C4.2 SHEET 8 OF 16