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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 /> http//www mccampbell cam E-mail main@mccampbell com <br /> • <br /> Ground Zero Analysis,Inc Client Project ID #256, Gabbard Date Sampled 10/25-10/27/99 <br /> 1714 Main Street Date Received 10/29/99 <br /> Escalon,CA 95320 Client Contact John Lane Date Extracted 10/29/99 <br /> Client P O FDate Analyzed 10/30-11/03/99 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether* &BTEX* <br /> BPA 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- I xylenes %Recovery <br /> zene Surrogate <br /> 24376 S AB S ND --- ND ND ND ND 105 <br /> 24377 SBGW26 W ND --- ND 080 ND ND 101 <br /> 24378 S AB25 S ND --- ND ND ND ND 101 <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 SPEP 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 gasolme9,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,j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />