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Home My WebLink AboutC3.0.Grading Plan2,077± G S F F.F.E. = 8 8 5. 2 5 EX. "NO BUILD" LINE E EXISTING POND "E" NORMAL POOL = 874.0 100-YR STAGE = 881.14 WA L N U T C R E E K D R I V E EX. CURB INLET T.C.=883.3 GUT=882.8 INV.=879.25 (SW - 15" RCP) EX. STORM MH T.C.=882.94 EX. END SECTION INV.=875.52 (W - 30" RCP) EX. STORM MH T.C.=883.35 INV.=876.48 (N - 30" RCP) INV.=876.46 (E - 30" RCP) INV.=877.50 (W - 18" RCP) NEW 5'Ø STORM MANHOLE (REMOVE/REPLACE EX. BEEHIVE INLET AS NECESSARY PER CARMEL STDS.) T.C.=883.15 INV.=877.55 (E - 18" RCP) INV.=878.15 (W - 12" RCP) INV.=878.10 (12" TO BMP) INV.=878.0 (12" FROM BMP) EX. 1 8" R C P MLAG DESIGN TOP OF CURB GRADE = 883.37 TBM #1 ELEV.=883.55' TBM #51 ELEV.=883.98' EX. 30" RC P 144'± O F 8 " Ø S D R 3 5 PVC @ 1 . 0 0 % M I N . (CON N E C T A L L R O O F DRAIN S T Y P . )MICHIGAN ROAD (US 421)WA L N U T C R E E K D R I V EWALNUT CREEK DRIVE 57'± O F 8 " Ø S D R 3 5 PVC @ 1 . 0 0 % M I N . (CON N E C T A L L R O O F DRAIN S T Y P . ) FL FL T T T W F FC F W FC PROJECT NUMBER DRAWING NUMBER SHEET OF SCALE: DATE: DWN BY: CHKD. BY:CIVIL SITE GROUP, INC.GROUP, INC.PROF E SS ION A L E NG INEERIND IA NA PE10910647 STATE OF -oNREGIS TER E DBR IA N S CR O SSVIOC.001 C3.0LEXINGTON, KY 40509100 VALVOLINE WAYVALVOLINE INSTANT OIL CHANGEGRADING & DRAINAGE PLANVALVOLINE INSTANT OIL CHANGE9835 MICHIGAN ROAD - LOT '1A' of NORTH AUGUSTACARMEL, INDIANA 46032REVISION RECORD 07/17/2019 NOTE REFER TO ARCHITECTURAL & FOUNDATION PLANS FOR ALL BUILDING DIMENSIONS. TOPOGRAPHIC & BOUNDARY NOTE UTILITY LOCATE NOTE LEGEND: 18 " OF VERTICAL SEPARATION MUST BE MAINTAINED FOR ALL UTILITY CROSSINGS. ALL CONCRETE PIPE JOINTS SHALL BE CONTINUOUS O-RING RUBBER GASKET CONFORMING TO ASTM C 443 FLOOD NOTE UTILITY VALVE NOTE STORM SEWER INLET NOTE ALL STORM WATER INLETS & CATCH BASIN CASTINGS SHALL BE LABELLED WITH ENVIRONMENTAL MESSAGING "NO DUMPING, DRAINS TO STREAM" CAST IN RAISED OR RECESSED LETTERS AT A MIN. 1-INCH HEIGHT. A SYMBOL OF A FISH SHALL ALSO BE CAST WITH THE LETTERS NOTE GRADING NOTES GENERAL NOTES CONTRACTOR TO KEEP EXISTING PAVEMENT SURROUNDING THE SITE (I.E. MICHIGAN ROAD AND WALNUT CREEK DRIVE) "BROOM CLEAN" AND FREE OF SOIL OR AGGREGATE THAT MIGHT BE BROUGHT OFF-SITE. DEPENDING ON THE CONSTRUCTION SEASON, MOISTURE CONTENT AND PROPERTIES OF THE SOILS ON SITE, CHEMICAL MODIFICATIONS AND/OR LIME STABILIZATION MAY BE REQUIRED. SEE SHEET C9.0 FOR SPECIFICATIONS. ALL CONCRETE PIPE JOINTS SHALL BE CONTINUOUS O-RING RUBBER GASKET CONFORMING TO ASTM C 443 CONTRACTOR (NOT THE PROJECT SITE OWNER) WILL BE RESPONSIBLE FOR THE DISPOSAL OF ANY SOIL, MATERIALS, ETC. NO OFF-SITE BORROWS OR STOCKPILES WILL BE NEEDED FOR THIS PROJECT. CONTRACTOR SHALL SUBMIT PRECAST STORM SEWER STRUCTURE SHOP DRAWINGS TO ENGINEER FOR REVIEW/APPROVAL PRIOR TO MANUFACTURING. EXISTING CONDITIONS NOTE CONTRACTOR TO VERIFY ALL EXISTING CONDITIONS, INCLUDING UTILITIES AND DRAINAGE INFRASTRUCTURE BEFORE COMMENCING WITH CONSTRUCTION. CONTRACTOR TO NOTIFY ENGINEER OF ANY DISCREPANCIES. EXISTING RIGHT-OF-WAY NOTE DAMAGE TO THE EXISTING RIGHT-OF-WAY SHALL BE RESTORED/REPAIRED TO THE SATISFACTION OF THE CITY AT THE COMPLETION OF THE PROJECT. THE CONTRACTOR IS ENCOURAGED TO INSPECT THE RIGHT-OF-WAY WITH THE CITY PRIOR TO THE START OF CONSTRUCTION TO DOCUMENT THE EXISTING CONDITION OF THE RIGHT-OF-WAY. BENCHMARK MINIMUM FLOOD PROTECTION GRADE & LOWEST ADJACENT GRADE DEFINITIONS This project is located at the northeast corner of the intersection of Michigan Road and 98th Street in Hamilton County, City of Carmel, Indiana. The site will consist of one (1) platted parcel totaling 0.98 +/- acres in size. There is no off-site or upstream acreage being routed through the site. The site is currently vacant and is covered entirely by greenspace with existing utility and storm infrastructure surrounding the site. The proposed improvements will consist of a new automobile service shop along with the associated utility and drainage infrastructure and new hard surface for parking and ingress / egress. Inlets and subsurface storm sewers will be used to convey storm water to the previously approved Walnut Creek Drive infrastructure. Storm water will be routed to and collected by the North Augusta Arm #1-Crooked Creek Regulated Drain. Approved design plans (11/2009) for the North Augusta Arm #1-Crooked Creek Regulated Drain are on file with the Hamilton County Surveyor's Office. The stormwater detention pond system of West Carmel Marketplace includes the subject site with post-developed conditions in an updated analysis performed by Woolpert, LLP in June, 2007 and reviewed / approved by the Hamilton County Surveyor's Office (Letter on File). The proposed improvements will result in a curve number (CN) of 88.8 and a runoff coefficient (C) of 0.57 for the 0.98 acre outlot; therefore, substantially less than the previously approved drainage master plan. Additional stormwater detention for the subject outlot is NOT required. The allowable release rates for the 0.98 +/- acre subject site would be 0.1 cfs and 0.29 cfs for the 10-year and 100-year storm events respectively. However, detention for the subject site is provided for within the West Carmel Marketplace Development. The developed 10-year and 100-year release rates from the subject site (prior to detention) are XXX cfs and XXX cfs respectively. The required detention volume for the subject site is provided for within the drainage master plan of West Carmel Marketplace (see drainage calculations referenced above prepared by Woolpert). The applicable pages from the Approved Master Plan are in the Appendix of the drainage report for this project. DRAINAGE SUMMARY We have shown three (3) top-of-curb grades on Michigan Road and four curb/gutter grades along Walnut Creek Drive. The lowest on each of two are 883.37 (Michigan Road T.O.C.) and 883.0 (Walnut Creek Drive gutter grade). The minimum F.F.E. is to be at 15” above the Michigan Road Grade (883.37 - highest of the two), which is 884.62. The F.F.E. has been set at 885.25. The local flood overflow route for the storm inlets is 883.50; therefore, one (1) foot above the aforementioned elevation would be 884.50, which represents the MFPG . The 100-year elevation of the off-site pond is 881.14 and does not come into play. Therefore, the MLAG/MFPG has been set at 884.50. The minimum F.F.E. shall be no less than 6" above finished grade around the building, which results in a minimum F.F.E. of 885.0. The MFPG and MLAG are calculated correctly and the set F.F.E. of 885.25 is in compliance with the STSM. STRUCTURE DATA TABLE ALL PROPERTY CORNER MONUMENTS SHOULD BE MARKED PRIOR TO COMMENCING WITH CONSTRUCTION AND PROTECTED DURING ALL CONSTRUCTION ACTIVITY. PROPERTY CORNER MONUMENTS NOTE STORM SEWER SYSTEM NOTE ALL STORM SEWER INFRASTRUCTURE TO BE CONSTRUCTED WITH THIS PROJECT SHALL BE PRIVATELY OWNED AND MAINTAINED BY CURRENT PROPERTY OWNER & ALL HEIRS, SUCCESSORS, & ASSIGNS. STRUCTURE DETAILS DETAILS OF THE PROPOSED STORMWATER QUALITY UNIT & THE DIVERSION MANHOLE STRUCTURE ARE LOCATED ON SHEET C7.2. BMP & DIVERSION PRELI MI NA RY NOT F O R C O NST R U CTI O N PLAN NOTES: T FL ENGINEER: SURVEYOR: OWNER: ARCHITECT: W F FC