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110 2nd Avenue South #D7 Pacheco CA 94553-556D <br /> =McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> 24 h //www mcc bell com E-mail mainmccampbell corn <br /> Advanced GeoEnvironmental, Inc Client Project ID Pacific Auto Center Date Sampled 12/10/03 <br /> 837 Shaw Road Date Received 12/11/03 <br /> Stockton, CA 95215 Client Contact Paul Dotson Date Extracted 12113/03-12/14/03 <br /> Client P O Date Analyzed 12/13/03-12/14/03 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Crn Work Order 0312216 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A DW25144/121003 W ND — ND ND ND ND 1 102 <br /> 002A DW25272/121003 W ND — ND ND ND ND 1 100 <br /> Reporting iarrat for DF=1 W 50 50 05 0 5 05 05 I lig/L <br /> ND means not detected at or <br /> above the reporting h=t S NA NA NA NA NA NA 1 mg/Kg <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in ug/L,soil/sludgelsolid samples in mg/kg wipe samples to pg/wipe, <br /> product/oil/non-aqueous liquid samples in mg/L <br /> #cluttered chromatogram,sample peak coelutes with surrogate peak <br /> +The following descriptions ofthe 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/mineral spirit?),0 one to a few isolated non-target <br /> peaks present,g)strongly aged gasoline or diescl range compounds are significant,h)lighter than water immiscible sheen/product is present,i)liquid <br /> sample that contains greater than—2 vol %sediment,})reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> derived from gasoline aviation as) m)no recognizable pattern <br /> DHS Certification No 1644 gela Rydelius,Lab Manager <br />