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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 /> http://www.mccampbell.com E-mail:main@mccampbell.com <br /> V <br /> Advanced GeoEnvironmental Client Project ID:Arco Mini Mart Date Sampled: 12/31/98 <br /> �.. 4005 North Wilson Way Date Received: 01/05/99 <br /> Stockton,CA 95205 Client Contact:Noel Henderson Date Extracted: 01/05/99 <br /> r� <br /> Client P.O: Date Analyzed: 01105-06/99 <br /> Gasoline Range(C6-02)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 TPH(g)' MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 01297 12/31/98 W ND --- ND ND ND ND 107 <br /> 01298 MW2 W ND --- ND 0.52 ND 1.2 106 <br /> 12/31/98 <br /> �.. 01299 MW3 W ND --- ND ND ND ND 107 <br /> 12/31/98 <br /> 01300 MW7 W 68,c --- 5.7 0.64 ND 0.61 101 <br /> r`. <br /> 12/31/98 <br /> 01301 MW4 W 20,000,b --- 130 340 1600 6200 100 <br /> 12/31/98 <br /> 01302 MWS W 72,000,a --- 5100 11,000 4200 20,000 100 <br /> 12/31/98 <br /> 01303 MW6- W 460,a --- 3.4 9.9 13 57 99 <br /> 12/31/98 <br /> 01304 12/3119$ W 2700,a --- 32 120 150 390 97 <br /> a.. <br /> V <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 /> r... *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 derived from gasoline(?);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 /> LW <br /> DHS Certification No. 1644Edward Hamilton,Lab Director <br /> rr <br />