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03/10/2005 15:57 5306760205 STRATUS NO CALIF-, PAGE 02/10 <br /> Joe's Truck Plaza Facility <br /> 15501 South Harlan Road <br /> j Lathrop California <br /> MTBE M ss r,:xtractiun Rate Estimates. <br /> Mass Extraction Rate Estimates for well MW7: <br /> The average groundwater extraction during f"asibility test using well MW-7 was 7.5 gpm and i <br /> ,i: <br /> on in influent groundwater sample collected during test using well MW-7 <br /> the average IVITBt~ concentrati <br /> was 93 ug/L. <br /> sm, litres of groundwater extracted per day = 40,5001itresiday <br /> At 7.5 gp <br /> � * <br /> Mass of`MTSE extracted in a day(lbs) = Concentralon (µg/L)*1 g '(9m/µ9 volume extracted per day <br /> Mass of MTBE extracted per day @ 7.5 gprn(MW-7) 8.77 gm/day <br /> Similarly Mass of MTBE extracted per day at, <br /> 1 gpm= o.50 grn/day <br /> 2 gpm= 1.00 am/day <br /> 3 gpm 1.51 gm/day <br /> 4 gpm= 2.01 gm/day <br /> 5 gpm= 2.51 gm/day <br /> 6 gpm= 3.01 gm/day . <br /> 7 gpm 3.52 gm/day <br /> Mass Extraction Rate Estimates for wells <br /> MW-2 and MW-3: <br /> t F <br />�. <br /> The average MTBE concentrations at wells MW-2 and MW-3 between January 2004 and December 2004 <br /> were at 532.5µg/L and 465 4g/l , respectively. Half of these concentrations(260.25 wg/L and 232.5 �Lg/l.) <br /> were used to estimate the mass extractton.�rates from wells mW-2 and MW- <br /> � _ <br /> Mass of MTBE extracted per day using wells MW-2 and MW-3 at, 1 gpm :t 2.89 gm/day. <br /> at concentration of <br /> 498.75 µg1L 2 gpm= 5.39 gm/day <br /> 3 Spm` 8.08 gm/day <br /> i 4'9pM_ jo.77 gm/day <br /> ' 5 gpm.= 13.47 giniday <br /> E gpm 16.16 gmlday <br />' 7 gpm = 15.05 gmlday <br /> 7:5 gpm= 20.2B gm/clay <br /> l <br /> C <br /> { <br /> i <br /> I' <br />