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ARCO Station 6100 <br /> 25775 S Patterson Pass Road <br /> Tracy, California <br /> Historical Soil Sample Analytical Results <br /> Boring Depth Date Hydrocarbon concentrations <br /> Designation (ft-bgs) Sampled (mg/kg) Total <br /> TPHg B T E X BTEX <br /> B-1 15 Jun-90 <2 0 <0 058 <0 05 <0 05 <0 05 0 <br /> 30 Jun-90 1900 11 67 26 150 254 <br /> 45 Jun-90 49 <0 05 015 017 1 3 162 <br /> 50 Jun-90 <2 O <0 05 <0 05 <0 05 <0 05 0 <br /> 55 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> B-2 10 Jun-90 550 55 43 11 76 1355 <br /> 20 Jun-90 250 044 57 371 23 3285 <br /> 30 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> 35 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> 40 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> B-3 10 Jun-90 48 <0 05 <0 05 <0 05 083 083 <br /> 15 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> 20 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> 25 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> . B-4 15 Jun-90 180 085 16 145 62 101 <br /> 20 Jun-90 810 073 11 12 76 9973 <br /> 25 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> 30 Jun-90 <2 0 <0 05 <0 05 <0 05 <0 05 0 <br /> B-5 15 Jun-90 160 014 032 054 12 13 <br /> 20 Jun-90 42 01 0 099 0 096 1 1 295 <br /> 25 Jun-90 <2 0 0 077 <0 05 <0 05 006 0 137 <br /> 30 Jun-90 <2 0 014 0 056 <0 05 <0 05 0 196 <br /> UST and piping removal <br /> EW-1 15 Nov-90 0 018 0 018 <br /> EW-2 22 Nov-90 28 013 028 082 48 603 <br /> EW-3 15 Nov-90 54 019 022 053 56 654 <br /> EW-4 22 Nov-90 36 043 03 0 062 051 1 302 <br /> EW-5 22 Nov-90 97 16 26 1 3 52 107 <br /> EW-6 15 Nov-90 <br /> SW-1 22 Nov-90 <br /> SW-2 15 Nov-90 570 77 22 16 78 1237 <br /> SW-3 15 Nov-90 <br /> SW-4 15 Nov-90 280 23 37 39 20 299 <br /> WW-1 15 Nov-90 58 05 02 068 14 278 <br /> WW-2 22 Nov-90 023 0 063 0 083 0 376 <br /> WW-3 15 Nov-90 1300 19 66 33 180 298 <br /> WW-4 22 Nov-90 100 1 3 3 1 1 67 121 <br /> WW-5 22 Nov-90 2300 31 130 52 260 473 <br /> WW-6 22 Nov-90 001 0 035 0 013 Oil 0 168 <br /> NW-1 15 Nov-90 12 012 0 026 0 031 0 091 0 268 <br /> Page 1 <br />