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110 Second Avenue South,#137,Pacheco,CA 94553-5560 <br />' McCAMPBELL ANALYTICAL INC. Telephone:925-798-1620 Fax :925-798-1622 <br /> 1 h1W.//www.mccampbell.com E-mail:main@mccatnpbell.com <br />' Advanced GeoEnvironmental Client Project ID: Strong Property Date Sampled: 07108-07109198 <br /> 4005 North Wilson Way Date Received: 07/10/98 <br />' Stockton,CA 95205 Client Contact: Tim Cuellar Date Extracted: 07/13/98 <br /> Client P.O: Date Analyzed: 07/13-07114198 <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 Client ID Matrix' TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery zene Surrogate <br /> 91926 B1-17 S 110,a ND<0A 0.54 0.35 3.1 0.43 97 <br /> 91927 BI-20 S ND ND ND ND ND ND 103 <br /> 91929 BI-30 S ND ND ND ND ND ND 104 <br /> 91931 B2-15 S 58,a ND<0.4 0.36 0.20 1.8 5.4 109 <br /> 91932 82-20 S ND ND ND 0.006 0.009 0.022 106 <br /> 91935 B3-15 S 2.3,j ND ND 0.005 ND 0.006 99 <br /> 91936 B3-20 S ND ND ND ND ND ND 103 <br /> 91938 B3-30 S ND ND ND ND ND ND 103 <br /> 91940 MWI-10 S 330,b,j ND<0.4 0.12 0.40 7.7 1.1 104 <br />' 91942 MWI-20 S ND ND ND ND 0.020 ND 103 <br /> 91943 MW1-25 S ND ND ND ND 0.014 ND 97 <br />' 91945 MW2-10 S 1.0,a ND 0.072 0.006 0.065 0.011 100 <br /> 91946 MW2-15 S 380,a ND<2 3.9 0.99 9.9 20 104 <br /> 91948 MW2-25 S ND ND ND ND ND ND 101 <br /> 91950 MW3-10 S ND NO ND ND ND ND 102 <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. mg/kg 0.05 0.005 0.005 0.005 0.005 <br /> *water and vapor samples are reported in urrples 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 invrriscible <br /> sheen is present;i)liquid sample drat contains greater than�5 vol.%sediment j)no recognizable pattern. <br /> DHS Certification No. 1644 /Edward Hamilton,Lab Director <br />