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FINAL SITE PLAN - <br />Esc1 DRAINAGE CALCULATION: 100yearstorm - 24 hr period 12/9/2019 <br />ASC 1 <br />gln <br />Q <br />j <br />J <br />STRUCTURE CHART <br />STMH-2058 <br />CI-2503 <br />(FLOW LINE) <br />RIM <br />ELEVATION <br />= <br />738.99 <br />RIM <br />ELEVATION = 741.25 <br />I.E. <br />36" <br />RCP. <br />NE. <br />727.59 <br />I.E. <br />12" <br />CPP. SW. 737.35 <br />I.E. <br />12" <br />CPP. <br />NE. <br />733.79 <br />I.E. <br />12" <br />RCP. <br />SE. <br />730.69 <br />CI-2530 <br />(FLOW LINE) <br />I.E. <br />60" <br />RCP. <br />SW. <br />727.59 <br />RIM <br />ELEVATION = 738.97 <br />I.E. <br />30" <br />RCP. <br />NW. <br />729.09 <br />I.E. <br />12" <br />CPP. SW. 733.87 <br />CI-2546 <br />(FLOW LINE) <br />STMH-2115 <br />RIM <br />ELEVATION = 737.76 <br />RIM <br />ELEVATION <br />= <br />741.45 <br />I.E. <br />12" <br />RCP. SW. 732.86 <br />I.E. <br />36" <br />RCP. <br />NE. <br />728.55 <br />I.E. <br />12" <br />RCP. NW. 732.86 <br />I.E. <br />12" <br />CPP. <br />SE. <br />736.85 <br />I.E. <br />36" <br />RCP. <br />SW. <br />728.55 <br />I.E. <br />12" <br />RCP. <br />NW. <br />736.35 <br />EXISTING LEGEND <br />0 SET P.K. NAIL <br />" <br />PINE TREE <br />0 <br />BUSH <br />TREE <br />FOUNTAIN/IRR. <br />0 <br />BOLLARD/POLE <br />LIGHT POLE <br />UTILITY POLE <br />E- <br />GUY ANCHOR <br />s <br />SIGN <br />0 <br />WELL <br />X <br />VALVE <br />1;j <br />FIRE HYDRANT <br />❑ <br />CURB INLET <br />® <br />DRYWELL <br />ss <br />SANITARY MANHOLE <br />© <br />STORM MANHOLE <br />O <br />CLEAN -OUT <br />® <br />FIBER OPTIC MANHOLE <br />• FOUND IRON <br />(M) MEASURED DISTANCE <br />(R) RECORD DISTANCE <br />® <br />GAS METER <br />0 <br />WATER MANHOLE <br />D <br />END SECTION <br />ELEC. VAULT <br />[101 <br />ELEC. TRANSFORMER <br />PHONE VAULT <br />k xxxXX <br />SPOT ELEVATION <br />SET FLUSH, 5 8" <br />0 CAPPED REBA <br />IN. REG. F-0044 <br />MI. REG. #22436 <br />SOIL BORING <br />O WATER METER <br />CABLE PIED. <br />OT PHONE PED. <br />EE) ELEC. PIED. <br />0-MID MAILBOX <br />E] A/C UNIT <br />- EX. ELEVATION <br />- - - - WIRE FENCE <br />CHAIN LINK FENCE <br />WOOD FENCE <br />OHE 0HE <br />ELECTRIC <br />uGE UGE <br />ELECTRIC <br />ur UT <br />PHONE <br />uG uG <br />GAS <br />cTv cry <br />CABLE TV <br />W W <br />WATER <br />FO FO FO <br />FIBER OPTIC <br />_ = <br />STORM LINE <br />SANITARY LIN <br />TEMPORARY BENCHMARK INFORMATION: / <br />VERTICAL DATUM ESTABLISHED BY A TWO (2) HOUR STATIC GPS OBSEVATION POST:1� <br />PROCESSED BY OPUS (NAVD88) /e <br />T.B.M 1. SOUTHEAST BOLT OF A STRAIN POLE LOCATED AT THE CORNER OF COR19"% M. <br />23. ELEVATION = 739.94 \ <br />_ C'pNc a <br />T.B.M. 2. CUT SQUARE IN EAST SIDE OF LIGHT POLE BASE ALONG WEST LINE OF SURVEY <br />PARCEL. ELEVATION = 742.65�k ° <br />GENERAL SURVEY DISCLAIMER NOTES: <br />THE INFORMATION SHOWN ON THIS DRAWING IS INTENDED FOR THE CLIENT ONLY. ANY REUSE <br />WITHOUT WRITTEN VERIFICATION AND ADAPTATION BY THE LAND SURVEYOR FOR THE SPECIFIC <br />PURPOSE INTENDED WILL BE AT THE USERS SOLE RISK AND WITHOUT LIABILITY OR LEGAL <br />EXPOSURE TO THE LAND SURVEYOR. <br />ANY UTILITY OR EASEMENT LOCATIONS, IF SHOWN, ARE APPROXIMATE. THE CLIENT MUST FIELD <br />VERIFY UTILITY LOCATIONS WITH THE RESPECTIVE UTILITY COMPANY. THIS LAND SURVEYOR <br />ASSUMES NO LIABILITY FOR THE ACCURACY OF THE LOCATION OR SIZE OF EXISTING UTILITIES <br />OR THE EXISTENCE OR NONEXISTENCE OF ADDITIONAL UNDERGROUND UTILITIES OR STRUCTURES. <br />NO IMPROVEMENTS SHOULD BE MADE ON THE BASIS OF THIS PLAT ALONE. FIELD <br />MONUMENTATION OF CRITICAL POINTS SHOULD BE ESTABLISHED PRIOR TO COMMENCEMENT OF <br />ANY AND ALL CONSTRUCTION. FOR BUILDING LINES, EASEMENTS AND OTHER RESTRICTIONS NOT <br />SHOWN HEREON REFER TO YOUR DEED, ABSTRACT, TITLE POLICY, CONTRACTS AND LOCAL <br />BUILDING, ZONING AND SUBDIVISION ORDINANCES. <br />UNLESS SPECIFICALLY SHOWN HEREON, THIS SURVEY DOES NOT PURPORT TO INDICATE THE <br />PRESENCE OR ABSENCE OF WETLANDS AND HAZARDOUS OR ENVIRONMENTALLY INJURIOUS <br />MATERIALS. THE SURVEYOR EXPRESSLY DISCLAIMS ANY RESPONSIBILITY OR LIABILITY FOR THE <br />SAME. <br />ANY INFORMATION ON THIS DRAWING IS NOT INTENDED TO BE SUITABLE FOR REUSE <br />BY ANY PERSON, FIRM OR CORPORATION OR ANY OTHERS ON EXTENSION OF THIS <br />PROJECT OR FOR ANY USE ON ANY OTHER PROJECT. ANY REUSE WITHOUT WRITTEN <br />VERIFICATION AND ADOPTION BY THE ENGINEER, ARCHITECT OR SURVEYOR FOR THE <br />SPECIFIC PURPOSE INTENDED WILL BE AT THE USERS SOLE RISK AND WITHOUT LIABILITY <br />OR LEGAL EXPOSURE TO THE ENGINEER, ARCHITECT OR SURVEYOR. <br />ALL UNDERGROUND UTILITIES MUST BE FIELD VERIFIED BY THE <br />CONTRACTOR BEFORE ANY CONSTRUCTION MAY BEGIN. <br />Q <br />STMH-2115 � <br />CI-2503/ / <br />\ � hill <br />a <br />I <br />\ \\\ \ <br />65 LF 4" PVC @ <br />(ROOF DR) <br />coy \\ <br />\\ °tic <br />** CONTRACTOR SHALL REVIEW ENTIRE PLAN <br />SET AND NOTIFY ENGINEER OF DISCREPANCIES <br />FOUND ON PLAN FOR FURTHER CLARIFICATION <br />AND/OR REVISIONS, PRIOR TO CONSTRUCTION <br />CHAMBER SYSTEM <br />ADS STORMWATER CHAMBER SYSTEM <br />MODEL: MC-4500 <br />SEE DETAILS AND SPECIFICATIONS ON <br />SHEET C2.2 <br />PUBLIC ALLEY <br />Surface <br />Area(ft2) <br />Area (ac) <br />Coefficient <br />Total <br />Building <br />7,380 <br />0.17 <br />1.00 <br />7,380.00 <br />Asphalt <br />16,840 <br />0.39 <br />0.99 <br />16,671.60 <br />Concrete Sidewalks <br />1,510 <br />0.03 <br />1.00 <br />1,510.00 <br />Open Space <br />2,148 <br />0.05 <br />0.13 <br />279.24 <br />TOTAL 27,878 <br />Weighted Runoff Coefficient= <br />Q = (0.93)(0.234i n/h r)(0.64ac. )= <br />Vol=0.14ft3/secX24hrsX60minX60sec = <br />12,034ft3 X 1.06 (6% for siltation) = <br />0.64 <br />25,841 <br />Coefficient <br />25,841 27,878 0.93 <br />0.14 CFS <br />12,034 CIF <br />12,756 CF Storage Required <br />CONCEPTUAL LAYOUT <br />64 STORMTECH MC-4500 CHAMBERS <br />10 STORMTECH MC-4500 END CAPS <br />12 <br />STONE ABOVE (in) <br />9 <br />STONE BELOW (in) <br />40 <br />% STONE VOID <br />12798 <br />INSTALLED SYSTEM VOLUME (CF) (PERIMETER STONE INCLUDED) <br />3146 <br />284 <br />CONCEPTUAL <br />745.34 <br />SYSTEM AREA (W) <br />SYSTEM PERIMETER (ft) <br />ELEVATIONS <br />MAXIMUM ALLOWABLE GRADE (TOP OF PAVEMENT/UNPAVED) <br />740.84 <br />MINIMUM ALLOWABLE GRADE (UNPAVED WITH TRAFFIC) <br />740.34 <br />MINIMUM ALLOWABLE GRADE (UNPAVED NO TRAFFIC) <br />740.34 <br />MINIMUM ALLOWABLE GRADE (BASE OF FLEXIBLE PAVEMENT) <br />740.34 <br />MINIMUM ALLOWABLE GRADE (TOP OF RIGID PAVEMENT) <br />739.34 <br />TOP OF STONE <br />738.34 <br />TOP OF MC-4500 CHAMBER <br />736.31 <br />12" TOP MANIFOLD INVERT <br />24" ISOLATOR ROW CONNECTION INVERT <br />BOTTOM OF MC-4500 CHAMBER <br />733.53 <br />733.34 <br />/13z.ny I tsU I I UIVI Ur J I UIVt <br />STORMWATER STORAGE REQUIRED = 12,756 CIFT <br />STORMWATER STORAGE PROVIDED = 12,798 CIFT <br />NOTE: 100-yr peak overflow rate = 0.0 cfs - all is contained <br />within chamber system. <br />DRAINAGE NOTE <br />NO OFFSITE DRAINAGE/STORMWATER WILL ENTER THE SITE. <br />ALL DRAINAGE ONSITE WILL BE STORED ONSITE PER <br />REQUIREMENTS OF CITY OF SOUTH BEND. <br />STRUCTURE DATA <br />STR # 1 <br />30" 0 STORM INLET <br />RIM=740.20 <br />I.E.=736.60 <br />58 LF 12" ADS @ 0.52% <br />STR #2 <br />36" 0 NYLOPLAST STORM INLET <br />W/ 24" SUMP <br />RIM=741.21 <br />I.E.=736.30 (N) 12" <br />I.E.=733.38 (S) 24" <br />STR #3 <br />36" 0 NYLOPLAST STORM INLET <br />RIM=741.21 <br />I.E.=733.38 (N&S) <br />STR #4 <br />36" 0 NYLOPLAST STORM INLET <br />W/ 24" SUMP <br />RIM=740.34 <br />I.E.=735.53 (SE) 12" <br />I.E.=733.38 (N) 24" <br />STR #5 <br />30" 0 STORM INLET <br />RIM=739.40 <br />I.E.=735.80 <br />52 LF 12" ADS @ 0.52% <br />0 20' 40' 60' <br />SCALE 1" = 20' <br />SURVEYORS & ENGINEERS: <br />DANCH, HARNER & ASSOCIATES, INC. <br />1643 COMMERCE DRIVE <br />SOUTH BEND, IN. 46628 <br />(574) 234-4003 <br />ATTN: MICHAEL DANCH <br />STORMWATER CHAMBER SYSTEM PLAN <br />