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i <br /> Mr. Chuck Carmel <br /> { <br /> February 18, 1992', <br /> Page 9 <br /> 11 <br /> i <br /> Table 2. Laboratory Results, ARCO Station 2093, <br /> i; <br /> Tracy, California, December 16, 1991 <br /> k <br /> II _ <br /> f � <br /> Well number <br /> r Constituent ATR-2 ATR-3 ATR-4ATR-5 <br /> Benzene. P/ 6 480 300 35 <br /> PPMVV1.4 113 70.9 8.3 <br /> Toluene, u9/1 <0.5 250 22 31 <br /> i Pp <0.12 64 5.6 7.9 <br /> Total xylenes <br /> � , Kgl1 <0.5 150 4952 <br /> <0.11 33.5 10.9 11.6 ` <br />� it I <br /> Ethylbenzene, pg/l 0.7 79 38 25 <br /> 0.16 17.6 8.5 5.6 <br /> Total petroleum hydrocarbons <br /> as gawk, pgd 640 23,000 7400 2,500 <br /> PPm4., 151 5,440 1,774 591 <br /> r Chioroform, 0.21 — <br /> 1,2-1)ichlorocthane, ppm, 0.024IP <br /> — -- — <br /> Organic lead, Kgs — -- <1 — <br /> uldi� -- — <0.02 _. <br /> IM <br /> aNiicrograms-per liter of air. <br /> bParrs per million of vapor volume. <br /> cN icmgrams. <br /> dThiny liters of soil vapor were passed through each sample. <br /> 1 <br /> Brown and Caldwell <br /> Conswtants <br />