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Cs IN <br /> 110 2nd Avenue South #D7 Pacheco CA 94553 5560 <br /> McCampbell Analytical, Inc. Telephone 925-798-1620 Fax 925-798 1622 <br /> Zo I Website www mccampbell cam E-mail mamQmccampbell com <br /> Advanced GeoEnvironmental, Inc Client Project ID Flag City Chevron Date Sampled 07/01/05 <br /> 837 Shaw Road Date Received 07/06/05 <br /> Client Contact Tam Cuellar Date Extracted 07107105-07109105 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 07/07105-07109105 <br /> Gasoline Range(C&C12)Volatile Hydrocarbons as Gasoline* <br /> Extraction method SW503013 Analytical methods SW80ISCm Work Order 0507050 <br /> Lab ID Client ID Matrix TPH(g) DF %SS <br /> 001A MW20A W ND l 116 <br /> 002A MW20B W ND 1 105 <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 in pg/wipe, <br /> product/oil/non-aqueous liquid samples in mglL <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 gasolmel),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 denved from gasoline(stoddard solvent/mineral spent?),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--1 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 Rydehus,Lab Manager <br />