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_ _ ,�•' <br /> RIC <br /> -2 Elm <br /> Chevron U.S.A. <br /> Page 14 <br /> r <br /> (approximately every 3 lifts) . A copy of Twining <br /> Laboratory's report is included in Appendix B. <br /> Soil excavated on March 19 and 20, 1990 that yielded <br /> "non-detected" field screening results was placed as fill in <br /> the western-most corner of the excavation. A composite <br /> y. <br /> sample, consisting of 3 discrete samples was taken of the <br /> soil and submitted to an analytical laboratory for chemical <br /> p analyses. The results of analyses are presented Table <br /> III. The location of fill is presented in Plate 1. <br /> TABLE III <br /> Concentrations of Petroleum Constitue is in Soil <br /> t (Concentrations measured in parts per million) <br /> Sample <br /> �.:. <br /> Benzene Toluene Ethbnz. Xylenes T <br /> ireC-DI3-3-A,B,C n/d n/d n, rj n/d n/d <br /> LE nd. <br /> Ethbnz. - Ethylbenzene <br /> T.P.H. - Total Petroleum Hydrocarbons <br /> n/d - Non-detected <br /> The placement of "clean" stockpiled soil as fill brought . <br /> `J the bottom of the excavation to a depth of approximately 7 to <br /> k <br /> e feet below finish grade. The remainder of the excavation <br /> is to be filled using treated soil (see section 5.3) on <br /> completion of the aeration process. r' <br /> 16000-250-044 <br /> Corrected 1 <br /> DAMES MOORE <br /> L <br /> _ 1 <br />