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110 2nd Avenue South #D7,Pacheco CA 94553-5560 <br /> McCaTTlpbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> http/Iwww mccampbell coin E-mail mam@mccampbell com <br />' Advanced GeoEnvironnnentaI,Inc Client Project ID Pacific Mini Mart Date Sampled 08/14/02 <br /> . (ARCO) <br /> 837 Shaw Road Date Received 08/16/02 <br />' Stockton,CA 95215 Client Contact Bill Little Date Extracted 08/23/02-08/25102 <br /> Client P O Date Analyzed 08/23/02-08/25/02 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline* <br /> xtractiun method SW5030B Analytical methods 8015Cm Work Order 0208287 <br />' Lab ID Client ID Matrix TPH(g) DF %SS <br /> 017A MW9/08-15-02 W ND 1 996 <br />' 018A MW1IA/08-15-02 W ND,t 1 100 <br /> 019A MW11B/08-15-02 W ND 1 100 <br />' 020A MW12A/08-15-02 W ND 1 102 <br /> 021A MW12B/08-15-02 W ND 1 100 <br /> I <br />� i <br /> i <br /> I <br /> Reporting Limit for DF=1, W 50 gg/L <br /> ND means not detected at or S NA NA <br /> above the reporting litnit <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,product/oil/non-aqueous liquid samples in <br /> mg/L,and TCLP extracts 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 interpretation a) <br /> unmodified or weakly modified gasoline is significant,b)heavier gasoline range compounds are significant(aged gasoline?),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline?,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),0 one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,i)liquid sample that <br /> contains greater than--2 vol %sediment,j)reporting limit raised due to high MT13F content,k)TPH pattern that does not appear to be derived from <br /> gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton, Lab Director <br /> I <br />