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110 2nd Avenue South ND7 Pacheco CA 94553 5560 <br /> McCampbell Analytical Inc Telephone 925 798-1620 Fax 925-798-1622 <br />' h l/www rncc bell com E tiiail main mcca bell com <br /> . Advanced GeoEnvironmental, Inc Client Project ID Flag City Chevron Date Sampled 06/25/03 <br />' 837 Shaw Road Date Received 06/26/03 <br /> Client Contact Tim Cuellar Date Extracted 06/28/03-06129/03 <br /> Stockton,CA 95215 <br />' Client P O Date Analyzed 06128/03-06129/03 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br />' <br /> rExtcho.method SW503oB Analytical methods SW8021B/8015Cm Work Order 0306568 <br /> Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 017A EW9 W ND ND ND ND ND ND 1 105 <br />' 018A EW10 W ND 71 ND ND ND ND 1 101 <br /> 019A INFLUENT W ND 16 ND ND ND ND l 107 <br />' 020A EFFLUENT W ND ND ND ND ND ND 1 105 <br /> I � <br /> 77 <br /> I <br /> Reporting L=t for DF=1 W S0 5 0 05 05 05 05 1 Etg/i <br /> ND means not detected at or <br /> above the reporting htmt S NA NA NA NA NA NA 1 mg/Kg <br /> •water and vapor samples and all TCLP&SPLP extracts are reported inµg/L,sotl/sludge/solid samples in gglkg, wipe samples in pg/wipe, <br />' productlorllnon-aqueous liquid samples in mg/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 gasoline9),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 gasoline9,e)TPlI pattern that does not appear to be derived from gasoline(Stoddard solvent/mineral spirit?),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/pruduct is present,1)liquid <br /> sample that contains greater than—2 vol %sediment,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> derived from asolme aviation as) m)no recognizable pattern <br /> DHS Certification No 1644 Angela Rydehus, Lab Manager <br /> I <br />