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Home My WebLink AboutSW8040430_COMPLIANCE_20050510STORMWATER DIVISION CODING SHEET POST -CONSTRUCTION PERMITS PERMIT NO. SW DOC TYPE ❑ CURRENT PERMIT ❑ APPROVED PLANS ❑ HISTORICAL FILE COMPLIANCE EVALUATION INSPECTION DOC DATE YYYYMM DD WET DETENTION POND ANALYSIS FILE NAME: S:1WQSIPOND1040430.may05.WK1 PROJECT #: SW8 040430.may05 REVIEWER: L. Lewis PROJECT NAME: Uzzell Car Wash DATE: 10-May-05 Lots 2, 3 & 4 Atlantic Plaza Receiving Stream: Mil? Creek Class: SA (>1/2 mile) Drainage Basin: White Oak Index No. WOK02 19-30-1 Site Area 2.69 acres Drainage Area 49330 square feet Area in Acres 2.51 IMPERVIOUS AREAS Rational C Buildings 20438.00 square feet Parking 64953,00 square feet SW square feet square feet square feet square feet square feet TOTAL 85�91 00 square feet Rational Cc= 0.04 SURFACE AREA CALCULATION % IMPERVIOUS 78.10°!_ SAIDA Ratio 5.07% Des. Depth 4 avg. Req. SA 5540 sf TSS: 85 Prov. SA 61'S0 sf VOLUME CALCULATION * place a "1" in the box if Rational is used Req. Volume 80 cf Vol. Prov. at DP 'E7o cf ORIFICE CALCULATION FOREBAY Perm. Pool Volume= 13519 Req. Forebay Volume= 2703.8 Provided Volume= 3481.00 Percent= Elevation Area Inc. Vol. Acc. Vol. 32.00 6150.00 0.00 33.00 7600.00 6875.00 6875.00 Avg. Head = 0.48 ft Q2 Area = 1.72 sq. inches Flow Q2, cfs 0.040 cfs Q5 Area = 0.69 sq. inches Flow Q5, cfs 0.016 cfs Orifice Area 0.79 sq. inches No. of Orifices 1 = Q= 0.018 cfs COMMENTS Volume and Orifice are within Design Guidelines. Surface area is deficient based on a 3' average depth. WET DETENTION POND ANALYSIS FILE NAME: S:IWQSIPOND1040430.apr05.WK1 PROJECT #: SW8 040430.apr05 REVIEWER: L. Lewis PROJECT NAME: Uzzell Car Wash Atlantic Plaza DATE: 26-Apr-05 Receiving Stream: Mill Creek Class: SA Drainage Basin: White Oak Index No. WOK02 19-30-1 Site Area 2.69 acres Drainage Area h 93 �5_00 square feet Area in Acres 2.51 IMPERVIOUS AREAS Rational C Buildings 20438.00 square feet Parking 64953.00 square feet SW square feet square feet square feet square feet square feet TOTAL 5;1 00 ` square feet Rational Cc= 0.04 SURFACE AREA CALCULATION % IMPERVIOUS '8.10% SA/DA Ratio &65% Des. Depth 3 avg. Req. SA 7269 sf TSS: 85 Prov. SA "1;C', sf VOLUME CALCULATION * place a "1" in the box if Rational is used Rational ?* FOREBAY Des. Storm 100 inches Perm. Pool Volume= Rv= 0.753 Req. Forebay Volume= 0 Bottom 28 msl Provided Volume= Perm. Pool 2 u0 msl Percent= Av;v Design Pool 33 msl Storage met @elev 33.00 msl Elevation Area Inc. Vol. ACC, VOL Req. Volume 60 cf 32.00 6150.00 0.00 Vol. Prov. at DP 33.00 7600.00 6875.00 6875.00 JZ1111C81�T1Imn ��-11C07i• Avg. Head = 0.48 ft Q2 Area = 1,72 sq. inches Flow Q2, cfs 0.040 cfs Q5 Area = 0.69 sq. inches Flow Q5, cfs 0.016 cfs Orifice Area 0.79 sq. inches No. of Orifices 1 Q= 0.018 cfs COMMENTS Volume and Orifice are within Design Guidelines. Surface area is deficient based on a 3' average depth.