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Tosco Corporation,a subsidiary of Phillips Petroleum Company 3
<br /> Tosco Station#1205, 16470 Cambridge Street,Lathrop CA lune 26,2002
<br /> . significant changes in groundwater elevations The groundwater extraction flow rate
<br /> ranged from 10 gpm to 3 5 gpm FID readings collected from the extracted vapor ranged
<br /> from 5,000 ppmv to 6,000 ppmv Applied vacuum, vapor extraction flow rates,
<br /> groundwater extraction flow rates, and Influent FID readings are presented in Table 1
<br /> During the 13-hour DPE event for wells MW-5 and MW-6 simultaneously, the applied
<br /> vacuum ranged from 19 to 24 in of Hg, vapor extraction flow rates ranged from 56 68
<br /> cfm to 77 39 cfm Groundwater elevations for wells MW-2, MW-1, MW-3, MW-7, and
<br /> MW-4 decreased by 0 13 feet, 0 10 feet, 0 08 feet, 0 05 feet, and 0 03 feet, respectively
<br /> The groundwater extraction flow rates were 2 8 gpm FID readings collected from the
<br /> vapor extracted ranged from 3,000 ppmv to 10,000 ppmv Applied vacuum, vapor
<br /> extraction flow rates, groundwater extraction flow rates, and influent FID readings are
<br /> presented in Table 1
<br /> During the 5-hour DPE event for well MW-1, the applied vacuum ranged from 21 to 25
<br /> in of Hg, vapor extraction flow rates ranged from 2180 cfm to 56 13 cfm Groundwater
<br /> elevations for wells MW-5, MW-2, MW-4,MW-6, and MW-7 decreased by 0 16 feet,
<br /> 0 14 feet, 0 06 feet, 0 06 feet, and 0 03 feet, respectively The groundwater extraction
<br /> flow rates ranged from 0 to 4 0 gpm FID readings collected from the vapor extracted
<br /> ranged from 110 ppmv to 120 ppmv Applied vacuum, vapor extraction flow rates,
<br /> groundwater extraction flow rates, and influent FID readings are presented in Table 1
<br /> During the 3-hour DPE event for well MW-2, the applied vacuum ranged from 24 5 to 26
<br /> in of Hg, vapor extraction flow rates ranged from 15 26 cfm to 37 06 cfm Groundwater
<br /> elevations for wells MW-1, MW-5, MW-6, MW-7, and MW-4 decreased by 0 16 feet,
<br /> 0 11 feet, 0 06 feet, 0 04, feet and 0 02 feet, respectively Groundwater extraction flow
<br /> rates ranged from 0 7 gpm to 3 0 gpm FID readings collected from the vapor extracted
<br /> ranged from 12 ppmv to 60 ppmv Applied vacuum, vapor extraction flow rates,
<br /> groundwater extraction flow rates, and influent FID readings are presented in Table 1
<br /> During the 21/2-hour DPE event for well MW-7, the applied vacuum ranged from 23 5 to
<br /> 26 in of Hg, vapor extraction flow rates ranged from 16 35 cfm to 47 96 cfm
<br /> Groundwater elevations for wells MW-2, MW-1, MW-5, MW-6, and MW-4 decreased
<br /> by 0 14 feet, 0 12 feet, 0 11 feet, 0 06 feet, and 0 02 feet, respectively Groundwater
<br /> extraction flow rates ranged from 0 gpm to 3 0 gpm FID readings collected from the
<br /> vapor extracted ranged from 4,200 ppmv to 8,000 ppmv Applied vacuum, vapor
<br /> extraction flow rates, groundwater extraction flow rates, and influent FID readings are
<br /> presented in Table 1
<br /> During the 46-hour DPE event for wells MW-5,MW-6 and MW-7, the applied vacuum
<br /> ranged from 14 5 in of Hg to 17 5 in of Hg, and vapor extraction flow rates ranged from
<br /> 94 08 cfm to 166 20 cfm The groundwater extraction flow rates ranged from 10 gpm to
<br /> 5 5 gpm Groundwater elevations for wells MW-1, MW-2, MW-3, and MW-4 decreased
<br /> by 0 16 feet, 0 13 feet, 0 08 feet, and 0 03 feet FID readings collected from the vapor
<br /> extracted from all wells ranged from 1,600 ppmv to 4,500 ppmv by the end of the test
<br /> Applied vacuum, vapor extraction flow rates, groundwater extraction flow rates, and
<br /> influent FID readings are presented in Table 1
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