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0 Qel Of 1 <br /> Table 3 <br /> Dual-Phase Extraction System-Groundwater Analytical Data BeforefAfter Test <br /> Tosco Service Station No 1205 <br /> 16470 Cambridge Street <br /> Lathrop,Califomia <br /> I <br /> DHS LUFT Method <br /> TPH9 Benzene Toluene Ethylbenzene Total Xylenes MtBE <br /> (ppb) (ppb) (ppb) (ppb) (ppb) (ppb) <br /> Well ID 03/25/02 03/29/02 03/25/02 03/29/02 03/25/02 03/29/02 03/25/02 03/29/02 03/25/02 03/29/02 03/25/02 03/29/02 <br /> MW-1 <50 55 07 1 1 15 055 <0 50 <0 50 48 20 <2 5 <25 <br /> MW-2 800 250 31 48 <5 0 11 65 073 18 11 90 68 <br /> MW-5 750 67,000 11 150 5 6 2,000 24 4,000 220 29,000 <25 <500 <br /> MW-6 <500 47,000 <50 160 <5 0 1,000 5.5 2,500 69 13,000 460 <500 <br /> MW-7 5,000 17,000 25 48 130 590 400 660 800 2,900 <50 1 <100 <br /> Well ID Date <br /> KO#103125/02 15,000 — <50 — <50 -- 820 — 4,700 — <250 — <br /> KO#2 03/26/02 2,500 — <5 0 -- 110 — 110 — 530 — <25 — <br /> KO#3 03/27/02 11,000 — <20 — 29 — 390 — 2,600 — <100 — <br /> KO#4 03128/02 7,300 — <50 — 10 — 41 — 1,700 — <25 — <br /> KO#5 03/29/02 6,500 — <10 -- 12 — 66 — 1,800 -- 1 <50 — <br /> ST -- 3,300 -- <5 0 -- <50 64_ -- 720 -- <25 <br /> Explanations <br /> TPHg=Total Petroleum Hydrocarbons calculated as gasoline <br /> MtBE=Methyl-tertiary butyl ether <br /> ppb=parts per billion <br /> BT=Baker Tank sample required for disposal <br /> DHS LUFT=Departrnent of Health Services Leaking Underground Fuel Tank Method <br /> Tosco/DPE test table1205 <br />