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I 10 Second Avenue South,#07,Pacheco,CA 94553 <br /> MCCAMPBELL ANALYTICAL INC. Telephone:510-798-1620 Fax:510-798-1622 <br /> 24 http://www.ntccampbcll.com E-mail:main@mccampbell.com <br /> Advanced GeoEnvironmental Client Project ID: Steel Guard Date Sampled:08/18/97 <br /> 1803 West March Lane,Ste A Date Received: 08/20/97 <br /> Stockton, CA 95207 Client Contact:Bill Little Date Extracted:08/20/97 <br /> Client P.O: Date Analyzed: 08/20-08/25/97 <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;Califomia R\VQCB(SF Bay Region)method GCF1D(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 79955 P1-5 S --- ND ND ND ND ND 98 <br /> 79956 P2-5 S --- ND ND ND ND ND 97 <br /> 79957 P3-5 S --- ND<0.4 ND<0.02 0.23 0.34 3.1 94 <br /> 79958 P4-5 S --- ND ND ND ND ND 101 <br /> 79961 P7-5 S --- ND ND ND ND ND 101 <br /> 79962 P8-5 S --- ND ND ND ND ND 98 <br /> Reporting Limit unless W 50 ug/L 5.0 0.5 0.5 0.5 0.5 <br /> otherwise stated;ND <br /> means not detected above <br /> the reporting limit S 1.0 mg/kg 0.05 0.005 0.005 0.005 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 rang ompounds are significant;h)lighter than water immiscible <br /> sheen is present;i)liquid sample that contains greater than—5 vol.%sedirne ;j o recognizable pattern. <br /> DHS Certification No. 1644 Cr Edward Hamilton,Lab Director <br />