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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> 64McCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br />' / � E-mail main@mccampbell com <br /> Advanced GeoEnvironmental Client Project ID Me]Bokides Petro Date Sampled 02/24/99 <br /> 4005 North Wilson Way Date Received 02/25/99 <br /> Stockton,CA 95205 Client Contact Bill Little Date Extracted 02125-02126199 <br /> Client P O Date Analyzed 02125-02/26/99 <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 Bay Region)method GCFID(5030) <br /> Lab ID Client ID Matrix %Recovery <br /> x TPH(g)+ MTBE Benzene Toluene zene Xylenes Surrogate <br /> 03970 MW59/92-23 W ND 42 ND ND ND ND 97 <br /> BMW'/2- <br /> 03971 23-99 W 270,a ND<]0 86 090 ND 70 102 <br /> 03972 BMW2/2 W 280,c 310 11 ND ND I6 101 <br /> 23-99 <br />' 03973 BMWI/2 W 850,c ND<20 41 48 ND 96 99 <br /> 23-99 <br /> 03974 BMW4/2- W 85,000,a 850 2700 10,000 3200 21,000 99 <br />' 23-99 <br /> 03975 BMW3/2- W 340,a NO 23 5 1 29 16 100 <br /> 23-99 <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 mg/kg S 1 0 m /k 005 0 005 0 005 0 005 0 005 <br /> •water and vapor samples are reported in ug1L,wipe samples in ug/wipe,soil and sludge samples in mglkg,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 srgnificant(aged <br /> gasohne9), c) lighter 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(?),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,j)no recognizable pattern <br /> DHS Certification No 1644 if Edward Hamilton,Lab Director <br />