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110 2nd Avenue South,#fD7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> . ht v//www mccampbelI corn E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Guardmo Date Sampled 06/15-06116199 <br /> 4005 North Wilson Way Date Received 06/18/99 <br /> Stockton,CA 95205 Client Contact Bill Little Date Extracted 06118-06122199 <br /> rChent P O Date Analyzed 06118-06122/99 <br /> Gasoline Range(C&C12)VOIatile 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 Matrix TPH(g)* MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 13585 MWI-15 S 990,a ND<5 3 9 33 17 110 96 <br /> 13586 MWI-25 S ND ND ND ND ND ND 90 <br /> I3587 MWI-30 S ND ND ND 0 012 0 005 0 028 99 <br /> 13588 MWI-35 S ND ND 0 008 0 024 0 007 0 037 102 <br /> 13589 MW2-15 S ND ND ND ND ND ND 97 <br /> 13590 MW2-25 S ND ND ND ND ND ND 97 <br /> 13591 MW2-30 S ND ND ND ND ND ND 97 <br /> 13592 MW3-15 S ND ND ND ND ND ND 96 <br /> 13593 MW3-20 S ND ND ND ND ND ND 95 <br /> 13594 MW4-15 S ND ND ND ND ND ND 100 <br /> 13595 MW4-25 S ND ND ND ND ND ND 95 <br /> 13596 MW4-20 S ND ND ND ND ND ND 103 <br /> Reporting Limit unless W 50 ug/L 5 0 0 5 0 5 05 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 /> "eater and vapor samples are reported:n 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 significani(aged <br /> gasohneo)), c) fighter gasoline range compounds (the most mobile fraction) are significant, d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline9,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)liqusd sample that contains greater than—5 vol %sediment,l)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />