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110 2nd Avenue South,017 Pacheco CA 94553-5560 <br /> McCarnpbell Analytical hic- Telephone 925-798 1620 Fax 925-798-1622 <br /> httpJlwww mcca bell cam Email mato mcca bell coin <br />' Advanced GeoEnvirorimental, Inc Client Project ID Flag City Chevron Date Sampled 12/05/02 <br /> 837 Shaw Road Date Received 12/06/02 <br />' <br /> Client Contact Tun Cuellar Date Extracted 12109102-12110/02 <br /> Stockton,CA 95215 <br /> Client P O Date Analyzed 12/09/02-12/10/02 <br />' Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm + Work Order 0212093 <br />' Lab ID Client ID Matrix TPH(g) MTIB Benzene Toluene Ethylbenzene Xylenes DF %SS <br /> 001A EW-1 W ND ND ND ND ND 1 103 <br /> 002A EW-2 W ND ND ND ND ND 1 959 <br /> 003A EW-3 W ND ND ND ND ND 1 959 <br />' 004A EW-4 W ND ND ND ND ND l 102 <br /> 005A EW-5 W ND ND ND ND ND 1 975 <br />' 006A EW-6 W ND ND ND ND ND 1 103 <br /> 007A EW-7 W ND ND ND ND ND 1 102 <br />' 008A EW-8 W ND ND ND ND ND 1 103 <br /> 009A EW-9 W ND — ND ND ND ND 1 104 <br />' 010A EW-10 W ND —_ ND ND ND ND Y 105 <br /> O11 A CSA-1 W ND _ ND ND ND �ND1 106 <br />' 012A CSA-2 W ND —_ ND ND ND ND 1 106 <br /> 013A Influent W ND ND ND ND ND 1 104 <br /> 014A Effluent W ND ___ ND ND ND ND 1 105 <br /> Reporting Limit for OF=1, W 50 50 05 0 5 0 5 05 1 µg/L <br /> ' No means not detected at or <br /> above the reporting limit S NA NA NA NA NA NA i mg/Kg <br /> *water and vapor samples are reported in lig/L,soil and sludge samples in mglkg,wipe samples toµg/wipe,and TCLP extracts inµg/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 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 denved from gasoline(Stoddard solvent I mineral spirit?),0 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 sheenlproduct is present i)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 gasoline(aviation gas) m)no recognizable pattern <br /> Edward Hamilton,Lab Director <br /> DHS Certification No 1644 <br /> 1 <br />