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Chevron U SA <br /> . Page 5 <br /> 5 1 Soil Aeration Permitting <br /> Aeration of stockpiled sail commenced following permitting The San Joaquin <br /> County Air Pollution Control District permit allowed up to 540 cubic yards of soil to <br /> be aerated an any one day Composite sampling and analysis of stockpiled soil was <br /> used by the district to determine the maximum allowable yardage to be aerated <br /> Results of composite sampling are presented in Table I <br /> TABLE I <br /> Concentrations of Petroleum Constituents in Soil <br /> (Concentrations measured in parts per million) <br /> Date Collected: <br /> February 19, 1990 <br /> sample <br /> I.D. Benzene Toluene Ethbnz. xylenes T.P.H. <br /> Cl-A, B,C n/d 0. 007 n/d 0. 006 1. 1 1 <br /> C2-A, B,C <0. 025 0. 027 0 .031 0. 093 150 �! <br /> C3--A, B,C n/d 0. 011 0 . 012 0. 054 29 <br /> Minimum <br /> Detection Limit 0. 005 0. 005 0 . 005 0. 015 10 <br /> Leaend: ' <br /> < - Less than ` <br /> Ethbnx -- Ethylbenzene { <br /> T.P.H. - Total Petroleum Hydrocarbons <br /> n/d - Non-detected ! <br /> Certified analytical reports for all test results are included in Appendix A of <br /> this report. The reports include analytical methods as well as the method detection <br /> limit for each analysis. <br />• 16000-250-044 <br /> D,kNtrs s Moog <br />