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HomeMy WebLinkAboutSW8010323_COMPLIANCE_20030121STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT. NO. SW v!(%�J� DOC TYPE El CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMMDD DETENTION POND ANALYSIS FILENAME- G:IDATAIWPDATAIWQSIPOND1010323.WK1 PROJECT #: SW8 010323 REVIEWER: L. Lewis PROJECT NAME: Trent River Oakey Grove Missionary Baptist Church DATE: 21-Jan-03 Receiving Stream: New River Class: SC HQW NSW Drainage Basin: White Oak Index No. WOK02 19-11 Site Area 5.75 acres Drainage Area ':,.�30.244 . " square feet Area = 2.99 acres IMPERVIOUS AREAS Building Parking SW Other TOTAL SURFACE AREA CALCULATION % IMPERVIOUS 78.45% Des. Depth 6 TSS: 90 Rational C 19969.00 square feet 78387.00 square feet 3633.00 square feet 192.00 square feet square feet square feet #2181 ';00 square feet Rational Cc= 0.04 SAIDA Ratio 4.49% Req. SA 5850 sf Prov. SA `..:.,..:.;59 sf VOLUME CALCULATION * place a 1" in the box if Rational is used Rational ?* Des. Storm ......., . 1 00:: inches Rv= 0.76 Bottom 3 msl Perm. Pool 9 00 msl Design Pool 10.27 msl Design SA 7129 sf Req. Volume ::.::;::,:;820 cf Prov. Volume <:8247 cf ORIFICE CALCULATION Avg. Head = Flow Q2, cfs Flow Q5, cfs No. of Orifices Diameter, inches Drawdown = FOREBAY Perm. Pool Volume= 15491 Req. Forebay Volume= 3098.2 Provided Volume= 2841.00 Percent= 183°fo SA @ _ Elevation= COMMENTS Surface Area , Volume and Orifice are within Design Guideline: 1.81 sq. in. 0.72 sq. in. 0.79 sq. in. 0.021 cfs in x in