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F <br /> r <br /> SUMMIT ENGINEERING, INC. <br /> Consulting Civil Engineers <br /> July 23, 2001 <br /> Project No, 2001015 <br /> Page B.14 <br /> POND SIZING <br /> The retention time was selected based on evaluating the system using a first order partial mix pond <br /> model for an Average Day, Peak Harvest Month Flow of 262,000 gpd. <br /> Pond No. 1 and No. 2 Ponds in Parallel <br /> Total Volume = 8.7 Mgal <br /> Detention Time = 8,714,000 gallons <br /> 262,000 gpd <br /> 33.0 days <br /> Pond No. 3 <br /> Total Volume = 8.021 Mgal <br /> Detention Time = 8.021,000 gallons <br /> 262,000 gpd <br /> = 30.6 days <br /> Totals, Pond Nos. 1, 2 and 3 <br /> Detention Time = 33.0 days + 30.6 days = 63.6 days <br /> Detention Time of 64 days <br />