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110 2nd Avenue South 4137 Pacheco CA 94555 5560 <br /> Inc.McCampbell Analytical, Telephone 925-798 1620 Fax 925 798-1622 <br /> Z4 1 Website www mccampbell com E-mad mam@mccampbell com <br /> • Advanced GeoEnviromnental, Inc Client Protect ID Flag City Chevron Date Sampled 12/28/04 <br /> 837 Shaw Road Date Received 12/29/04 <br /> Client Contact Tim Cuellar Date Extracted 12/30/04 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 12/30/04 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline <br /> Extraction method SW5030B Analytical methods SW8015Cm Work Order 0412540 <br /> Lab ID Client ID Matrix TPH(g) DF %SS <br /> 001A MW9A W ND 1 115 <br /> 002A MW913 W ND 1 114 <br /> 003A MW9C W ND 1 118 <br /> Reporting Limit for DF=1, W 50 µg/L <br /> ND means not detected at or <br /> above the reporting limit S NA NA <br /> *water and vapor samples and all TCLP&SPLP extracts are reported in ug/L„soil/sludge/solid samples in mg/kg wipe samples inµg/wipe, <br /> product/oil/non-aqueous liquid samples in mg/L <br /> 4 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 signtficant(aged gasolme:9),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 spirrt9),f)one to a few isolated non-target <br /> peaks present,g)strongly aged gasoline or diesel range compounds are significant h)lighter than water immiscible sheen/product is present,i)liquid <br /> sample that contains greater than—I vol %sediment j)reporting limit raised due to high MTBE content k)TPH pattern that does not appear to be <br /> derived from gasoline(aviation gas) m)no recognizable pattern,n)TPH(g)range non-target isolated peaks subtracted out of the TPH(g)concentration at <br /> • the client's request <br /> DHS Certification No 1644 Angela Rydelius,Lab Manager <br />