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' 110 2nd Avenue South,#D7 Pacheco CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 24 http_//www mccampbell com E-mail rnatn@mccampbell corn <br /> Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 05/30/01 <br /> 837 Shaw Road Date Received 05/31/01 <br /> Stockton, CA 95215 Client Contact Paul Dotson Date Extracted 06/01-06/05/01 <br /> ChentP O Date Analyzed 06101-06/05/01 <br /> iGasoline Range(C6-C12)Volatile Hydrocarbons as Gasohne*,with Methyl tert-Butyl Ether* &BTEX* <br /> FPA 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 Ethyl Xylenes %Recovery <br /> benzene Surrogate <br /> 53001 <br /> 68681 MW 12A W ND ND ND ND ND ND 99 <br />' 68682 MW 12B 53001 W ND 1$ 081 ND 064 ND 102 <br /> 68683 MW 13A W ND 37 ND ND ND ND 101 <br />' 53001 <br /> 68684 MW 13B W ND 47 092 ND 053 ND 106 <br /> 53001 <br /> 68685 30x11 W 38,000,a 270 1200 6100 1700 7500 101 <br /> 68686 EW2 W 370,a ND 25 14 30 15 103 <br /> 001 <br /> lie <br /> I <br />' Reporting Limit unless W 50 ug/L 5 0 0 5 05 0 5 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 10 mg/kg 0 05 0 005 0 005 0 005 0 005 <br />' <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 />' N 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 inobile 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(9),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,])no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />