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• Table 3. Soil Vapor Extraction Wellfta ARCO Facility 2133 Stockton CA P t3' > (TPH-G concentrations reported In parts-per-million, ppmv) Soil Vapor Extraction Wells V-1 V-2 V-3 V-4 V-5 V-6 V-7 Vacuum Vauium, Vacuum, Vacuum, Vacuum, Vaa.uum, Vacuum, Date Status 11111-G "H2O Status I PI4-G "1120 Status 11114-6 "H2O Status 1 PI I G "1120 Status TPH-G "H2O Status TPH-G "1120 Status 11'I i-G "1120 2/9/95(a) S -- S -- -- S -- -- S -- -- S -- -- S -- -- S -- -- 3/28/95(b) S -- -- S -- S -- -- S -- -- S -- -- S -- -- S -- 5/2/95 S 1 I 1 (b) 19 O 410(a) 25 S NS NS S 50 3(b) 17 S 2 5(b) 14 S 20(b) 14 S 78 4(b 24 9128/95(b) S 46 -- S 52 -- O 267 75 S 26 S 8 -- S 30 -- S 94 -- 11/28/95(b) S 1 2 -- 0 120 10 0 120 100 S 02 -- S 0 S 28 -- S 1 0 -- 3/27/96(b) S -- S -- -- O 100 110 S -- -- S -- -- S -- -- S -- -- 10/8/96(b) O 50 22 O 55 24 O 90 31 S -- S -- - S -- -- S - - 11/22/96(b) O 60 -- 0 16 -- 0 90 -- S -- -- S -- -- S -- -- S -- 4/21/97(b) 1 O 1 2 5 -- O 1 238 O 1 82 -- S -- -- S -- -- S -- S -- -- V-8 V-9 V-10 V-lI V-12 V-13 L-6 Vacuum, Vacuum, Vacuum, Vacuum, Vacuum, Vacuum, Vacuum, Date Status TPII-G "1120 Status TPH-G "H2O Status ITPII-G "H20 Status TPH-G "H2O Status TPH-G "H2O Status TPH-G "H2O Status TI'I l-G "1120 2/9/95(a) O 430 20 S -- -- S __ S __ ._ O 2300 20 O 570 21 O 280 21 3128195(b) O 2075 19 S -- S S -- -- O 1601 19 O 628 19 O 709 19 5/2/1995(b) S 86 1 (b) 26 S 78 4(b) 24 S 9 8(b) 26 S 260(b) 25 0 250(a) 25 O 190(a) 26 S 42 4(b 14 9/28/95(b) S 163 -- S 53 -- S -- -- S 51 -- O 1289 75 S 682 -- S 356 -- 11/28/95(b) S 39 -- S 08 -- S 20 -- S 14 -- S 18 -- S 25 -- S 45 -- 3127/96(b) S -- S -- -- S -- -- S -- S -- -- S -- -- S -- -- 10/8/96(b) S -- -- S -- -- S -- -- S -- S -- - S -- -- S 11/22/96(b) S -- -- S -- -- S - S -- -- S -- -- S -- -- S --4/21/97(b) S _. S -- -- S -- -- S -- - S -- -- S -- S -- -- 0=Open S=Closed (a)=Analytical Data (b)=PID Readings -- =Not measured