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I <br /> 110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> lie24 http//www mccampbell com E-mail main@mccampbell com <br />' Advanced GeoEnvironmental Client Project ID West Clay Properties Date Sampled 07/12/00 <br /> 4005 North Wilson Way Date Received 07/13/00 <br /> Stockton, CA 95205 Client Contact Tony Mikactch Date Extracted 07113-07115100 <br /> Client P O Date Analyzed 07113-07/15100 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline*,with Methyl tent-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 Eth en en Xylenes %Recovery <br /> ze Surrogate <br /> 42801 MW/07-12- W 22,000,a ND<200 2100 1800 660 3000 103 <br /> 00 <br />' 42802 MW3//007-12- W ND ND ND 078 ND 087 97 <br /> 42803 MW4//007-12 W ND ND ND 091 ND 091 101 <br />' 42804 MW 007 12 W ND ND ND ND ND ND 96 <br /> 42805 MW6A/07 W ND ND ND ND ND ND 96 <br />' 12-00 <br /> 42806 MW6B/07- W ND ND ND ND ND ND 97 <br /> 12-00 <br /> 42807 MW7//007-12 W ND ND ND 050 ND 081 97 <br /> 42808 MW8A/07- W ND ND ND ND ND ND 99 <br /> 12-00 <br />' 42809 MW8B/07 W ND ND ND 052 ND ND 99 <br /> 12-00 <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 /> *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 />' gasolineg), c) lighter gasoline range compounds (the most mobile fraction) are significant, d)gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasolme9,e)TPH pattern that does not appear to be derived from gasoline(9),0 <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 /> 1 <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> 1 <br />