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Jerry Moore <br /> Page 2 <br /> • Table 5 of the September 25, 1995, quarterly <br /> rates in gallons report shows flow <br /> g per minute and total flow in gallons. The total <br /> flow in gallons doesn' t equal the flow rate in gallons per minute <br /> multiplied by the number of days of operation, so either there were <br /> periods when the system was not in operation or the flow meters are <br /> not operating correctly. <br /> Table 4 of the September 25, 1995, quarterly report shows an <br /> extraction rate of 6 . 7 pounds per day based on the August 16, 1995 <br /> analytical results, PHS/EHD calculated a rate of 8 . 2 pounds per <br /> day In addition, the cumulative totals for pounds extracted do <br /> not correlate Please provide the calculations for obtaining the <br /> cumulative totals . <br /> Table 6 of the September 25, 1995, quarterly report also shows <br /> extraction rates and cumulative totals that do not correlate <br /> Please provide an addendum to this report which addresses the <br /> differences .n total gallons of water extracted and provides <br /> calculations supporting the cumulative totals and extraction rates <br /> reported in the tables by December 15 , 1995 <br /> Please note that data for closure of a site must include mass <br /> balance calculations of the substance treated versus that remaining <br /> so accurate information and calculations are required <br /> If you have any questions contact Margaret Lagar-, o at (209) 468- <br /> 3449 <br /> Donna Heran, REHS, Director <br /> Environmental Health Division <br /> Margaret Lagorio, Lead Senior REHS Diane M. Hinson, REHS <br /> Site Mitigation Unit Supervisor <br /> ML <br /> CVRWQCB - Beth Thayer <br /> c • Apex <br /> C : Emcon <br />