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110 2nd Avenue South,#D7 Pacheco,CA 94553-5560 <br /> Inc.McCampbell Analytical, ITelephone 925-798-1620 Fax 925-798 1622 <br /> Website www mccampbell coin E rnail m®in@ruccampbell com <br /> Advanced GeoEnvironrnental,Inc Client Project ID Flag City Chevron Date Sampled 06/15/04 <br /> 837 Shaw Road Date Received 06/16/04 <br /> Brockton,CA 95215 Client Contact Tim Cuellar Date Extracted 06/17104-06/18/04 <br /> Client P 0 Date Analyzed 06117/04-06118/04 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method. SW5030B Analytical methods SW8021B/8015Cm Work Order 0406263 <br /> Lab ID m <br /> Matrix TPH(g) MT$E Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A W ND I ND — — — -- 1 991 <br /> 002A MW6B W ND ND — -- — 1 99 7 <br /> 003A MW9A W ND 18 — -- — — 1 101 <br /> 004A MW9B W ND ND — -- — 1 101 <br /> 005A MW9C W ND ND -- -- — --- 1 101 <br /> 006A MW11A W ND,i ND — — — — 1 988 <br /> 007A MW11B W ND I 43 — — — — 1 985 <br /> 008A MW11C W ND ND — — — 1 101 <br /> 009A MW11D W ND ND 1 100 <br /> i010A influent W ND --- ND ND ND ND 1 103 <br /> 011A Effluent W ND -- ND ND ND ND 1 101 <br /> Reporting Latnt for DF=1, W 50 50 0 5 05 05 05 1 /I. <br /> NA means not detected at nr µg <br /> above the reporting lunit S NA NA NA NA NA NA 1 mg/Kg <br /> *water and vapor samples and all TC1_P&SPLP extracts are reported in ug/L,sorllsludge(solid samples in mg/kg, wipe samples inµg/wipe <br /> product/oWrion-aqueous liquid samples in tnW1_ <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 gasoline?),c)lighter gasoline range <br /> compounds(the most mobile fraction)are significant,d)gasoline range compounds havmg broad chromatographic peaks are significant biologically <br /> altered gasolmey,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,i)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 ofthe TPH(g)concentration at <br /> the client's r29 uest <br /> DHS Certification No 1644 gela Rydehus,Lab Manager <br />