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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> MCCAWBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http 1/www rnccampbell com E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID MW-Installation Date Sampled 01/10/00 <br /> 4005 North Wilson Way Date Received 01/12/00 <br /> iStockton, CA 95205 Client Contact Bill Little Date Extracted 01/12-01/14/00 <br /> Client P 0 Date Analyzed 01/12-01/18/00 <br /> Gasoline Range (Cb-C12) Volatile Hydrocarbons as Gasohne*,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 Matnx TPH(g)' MTBE Benzene Toluene Ethylben- Xzeneylenes %Recovery <br /> Surrogate <br /> 29031 MW7-50 S ND ND ND ND ND ND 107 <br /> I29032 MW7-60 S ND ND ND ND ND ND 102 <br /> 29033 MW7-70 S ND ND ND ND ND ND 106 <br /> 29034 MW7-80 S ND ND ND ND ND ND 98 <br /> Reporting Limit unless W 50 ug/L 50 05 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 mg/kg 005 0 005 0 005 0 005 0 005 <br /> *Nater 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 ugIL <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 then <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 patter 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 Edward Hamilton, Lab Director <br />