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i 110 Second Avenue South,#D7,Pacheco,CA 94553-5560 <br /> MCCALVIPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> http//www mccampbell com E-mail main@mccampbell com <br /> Advanced GeoEnvironmental. Chent Protect ID Newfield Property Date Sampled 01/26/99 <br /> 4005 North Wilson Way Date Received 01/28/99 <br /> Stockton, CA 95205 Client Contact Kevin McKibben Date Extracted 01/28/99 <br /> [Client P 0 Date Analyzed 01/28/99 <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 1D Client 1D Matrix TPH(g)+ Ethylben-MTBE Benzene Toluene Xylenes %Recovery <br /> zene Surrogate <br /> 02460 MW6/ W ND IT'D ND ND ND ND 106 <br /> 1-26-99 <br /> 02461 MW7/ W ND,i ND ND ND ND ND 110 <br /> 1-26-99 <br /> Reporting Limit unless W 50 ug/L 5 0 0 5 0 5 0 5 0 5 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit S 1 0 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 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 gasoline-',e)TPH pattern that does not appear to be denved from gasoline(1),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 poi %sediment,j)no recognizable pattern <br /> DHS Certification No 1644 I Edward Hamilton,Lab Director <br />