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' 110 2nd Avenue South,#D7 Pacheco,CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br />' http!/www mccampbell cum E-mail main@mccampbell com <br /> Advanced GeoEnvironmental,Inc Client Project ID Pacific Mmt Mart(Arco) Date Sampled 05/15/02 <br />' 837 Shaw Road Date Received 05/16/02 <br /> Stockton,CA 95215 Client Contact Bill Little Date Extracted 05/20/02-05/22/02 <br /> Client P 0 Date Analyzed 05/20/02-05/22/02 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> xtracnon method SW503013 AnaEyticai methods SW8021B1801SCm Work Order 0205232 <br />' Lab ID Client ID Ma tnx TPH(g) MT13E Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 017A MW15/05/15102 W ND 230 ND ND NI) ND 1 102 <br />' 018A MW16/05/15/02 W ND ND ND ND ND ND 1 106 <br /> 019A 'VW-1/05/15/02 W 1600,a 27 86 57 37 260 1 i 11 <br /> Reporting Limit for DF=1, W 50 50 0 5 05 05 05 ug/L <br /> ND means not detected at or S t 0 0 OS _-6-0-05 0 005 0 i05 0 005 mg(Kg <br /> above the reporting limit <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,and TCLP extracts in ug/L <br /> DF=dilution factor <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> I +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 gasolme),e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent),f)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,})no recognizable pattern <br /> • DHS Certification No 1644 <br /> r Edward Hamilton,Lab Director <br /> I <br />