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110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> ltd.//www.tnccamPl2P11 coin E-mail main@mccampbell com <br /> ' Advanced GeoEnvironrnental Client Project ID Stephen Marine Date Sampled 07/28/98 <br /> 4005 North Wilson Way Date Received 07/29/98 <br /> ' Stockton,CA 95205 Client Contact Bill Little Date Extracted 07/30/98 <br /> Client P O Date Analyzed 07/30/98 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline*,with Methyl tert-Butyl Ether*&BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(SF Say Region)method GCFID(5030) <br /> ' Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes � Recovery <br /> zene <br /> Surrogate <br /> 92843 MW-117-28-98 W 5700,a ND<10 230 51 180 480 122" <br /> ' 92844 MW-2/7-28-98 W ND ND ND ND ND ND 94 <br /> 92845 MW-3/7-28-98 W ND ND ND ND ND ND 96 <br /> 92846 MW-417-28-98 W ND 93 ND ND ND ND 94 <br /> ' 92847 MW-517-28-98 W ND ND ND 059 ND ND 103 <br /> 92848 MW-617-28-98 W ND ND ND ND ND ND 110 <br /> 11 <br /> ' Reporting Limit unless W 50 ug/L 5 0 05 0 5 05 05 <br /> otherwise stated,ND means <br /> not detected above the 10 <br /> ' reporting limit S mg/kg 0 05 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 ane 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 gasolmel,e)TPH pattern that does not appear io 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 /> i 1 <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />� 1 <br />