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r.� ..i <br />110 Second Avenue South, #D7, Pacheco, CA 94553 <br />14 McCAMPBELL ANALYTICAL INC. Telephone: 510-798-1620 Fax : 510.798-1622 <br />htniWwww.mecamobell.com E-mail: main@mecampbell.com <br />Advanced GeoEnvironmental <br />1803 West March Lane, Ste A <br />Stockton, CA 95207 <br />Client Project ID: Cherokee Truck Stop <br />Date Sampled: 09/18-09/22/97 <br />Date Received: 09/23/97 <br />Client Contact: Kevin McKibben <br />Date Extracted: 09/23/97 <br />Client P.O: <br />Date Analyzed: 09/23-09/29/97 <br />Gasoline Range (C6 -C12) Volatile Hydrocarbons as Gasoline*, with Methyl tert-Butyl Ether* & BTEX* <br />EPA methods 5030, modified 8015, and 8020 or 602; California RWQCB (SF Bay Region) method GCFID(5030) <br />Lab ID <br />Client ID <br />Matrix <br />TPH(g)' <br />MTBE <br />Benzene <br />Toluene <br />Ethylben- <br />zene <br />Xylenes <br />%Recovery <br />Surrogate <br />81043 <br />T2 -E <br />S <br />2200,a <br />ND<7.8 <br />8.5 <br />4.5 <br />32 <br />64 <br />98 <br />81044 <br />T3 -E <br />S <br />2500,a <br />ND<12 <br />13 <br />7.8 <br />35 <br />140 <br />103 <br />81045 <br />T3 -W <br />S <br />520,gj <br />ND<0.3 <br />ND<0.02 <br />0.20 <br />0.23 <br />0.88 <br />103 <br />81046 <br />T4 -E <br />S <br />960,gj <br />ND<3.7 <br />1.5 <br />0.82 <br />2.4 <br />2.6 <br />98 <br />81047 <br />T4 -W <br />S <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />100 <br />81048 <br />T5 -E <br />S <br />ND <br />0.16 <br />ND <br />ND <br />ND <br />ND <br />102 <br />81049 <br />T6 -N <br />S <br />65,a <br />2.2 <br />0.065 <br />0.054 <br />0.56 <br />0.24 <br />99 <br />81050 <br />T6-17 <br />S <br />I000,a <br />17 <br />8.5 <br />55 <br />14 <br />40 <br />104 <br />Reporting Limit unless <br />otherwise stated; ND <br />means not detected above <br />the reporting limit <br />W <br />50 ug/L <br />5.0 <br />0.5 <br />0.5 <br />0.5 <br />0.5 <br />S <br />1.0 mg/kg <br />0.05 <br />0.005 <br />0.005 <br />0.005 <br />0.005 <br />• water and vapor samples are reported in ug/L, wipe samples in ug/wipe, soil and sludge samples in mg/kg, and all TCLP and SPLP extracts <br />in ug/L <br />" cluttered chromatogram; sample peak coelutes with surrogate peak <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 gasoline is significant; b) heavier gasoline range compounds are significant(aged <br />gasoline?); c) lighter gasoline range compounds (the most mobile fraction) are significant; d) gasoline range compounds having broad <br />chromatographic peaks are significant; biologically altered gasoline?; e) TPH pattern that does not appear to be derived from gasoline (?); f) <br />one to a few isolated peaks present; g) strongly aged gasoline or diesel range compounds are significant; h) lighter than water immiscible <br />sheen is present; i) liquid sample that contains greater than —5 vol. % sediment; j) no recognizable pattern. <br />DHS Certification No. 1644 <br />// Edward Hamilton, Lab Director <br />