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110 2nd Avenue Sout. J7, Pacheco, CA 94553-5560 <br />McCAMPBELL ANALYTICAL INC. Telephone : 925-798-1620 Fax : 925-798-1622 <br />24 hU://www.mccampbell.com E-mail: main@mccampbell.com <br />Advanced GeoEnvironmental <br />4005 North Wilson Way <br />Stockton, CA 95205 <br />Client Project ID: Tradeway Chevrolet <br />Date Sampled: 06/01-06/02/99 <br />Date Received: 06/03/99 <br />Client Contact: Gary Dickenson <br />Date Extracted: 06/03/99 <br />Client P.O: <br />Date Analyzed: 06/10/99 <br />Multi -Range (Gasoline,Diesel,Motor Oil) TPH as Diesel * <br />EPA methods modified 8015, and 3550 or 3510; California RWQCB (SF Bay Region) method GCFID(3550) or GCFID(3510) <br />Lab ID <br />Client ID <br />Matrix <br />TPH(Gas)' <br />(C6 -C12) <br />TPH(Diesel)' <br />(C10 -C23) <br />TPH(MotorOil)' <br />(>C18) <br />% Recovery <br />Surrogate <br />12507 <br />P-8-10.5' <br />S <br />ND <br />ND <br />ND <br />97 <br />12508 <br />P-7-10.5' <br />S <br />ND <br />ND <br />ND <br />104 <br />12509 <br />P-6-10.5' <br />S <br />1.4 <br />13,000,g,b <br />16,000 <br />104 <br />12510 <br />P-5-10.5' <br />S <br />ND <br />ND <br />ND <br />103 <br />12511 <br />P-4-10.5' <br />S <br />ND <br />ND <br />ND <br />101 <br />12512 <br />P-3-10.5' <br />S <br />ND <br />ND <br />ND <br />101 <br />12513 <br />P-2-10.5' <br />S <br />ND <br />ND <br />ND <br />99 <br />12514 <br />P-1-10.5' <br />S <br />ND <br />ND <br />ND <br />102 <br />Reporting Limit unless otherwise <br />stated; ND means not detected above <br />the reporting limit <br />W <br />50 ug/L <br />50 ug/L <br />250 ug/L <br />S <br />1.0 mg/kg <br />1.0 mg/kg <br />5.0 mg/kg <br />" water samples are reported in ug/L, soil and sludge samples in mg/kg, wipes in ug/wipe and all TCLP / SPLP extracts in mg/L <br />" cluttered chromatogram resulting in surrogate and sample peak coelution, or; surrogate peak is on elevated baseline, or; surrogate has been <br />diminished by dilution of original extract. <br />° oil -range compounds are not fully recovered by this GC methodology <br />'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br />interpretation: a) unmodified or weakly modified diesel is significant; b) diesel range compounds are significant; no recognizable pattern; c) <br />aged diesel? is significant); d) gasoline range compounds are significant; e) medium boiling point pattern that does not match diesel(?); <br />one to a few isolated peaks present; g) oil range compounds are significant; h) lighter than water immiscible sheen is present; i) liquid <br />sample that contains greater than —5 vol. % sediment. <br />DHS Certification No. 1644 9 1^ Edward Hamilton, Lab Director <br />