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Calculations Completed By: Ian Williams <br /> Calculations Checked By: C.Hartman <br /> Date: 713012015 <br /> Storm Water Retention Pond Volume Analysis <br /> VPPS Stockton,CA <br /> Existing Pond <br /> Proposed Pond <br /> L= 130.00 ft <br /> L <br /> W= 130.00 ft <br /> d= 9.00 ft <br /> s= 4.00 <br /> w <br /> Free Board 1.00 ft <br /> 3 <br /> Available Volume= 67,531 ft <br /> = 505,165 Gal <br /> d <br /> Storm Water Requirements <br /> Site Area= 177,185 ft2 <br /> 25 year-24 hour Storm= 2.87 in <br /> Storm Volume= 42,377 W <br /> = 316,999 Gal <br /> Available Volume after Storm= 25,154 W <br /> = 188,165 Gal <br />