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1 <br /> E 10 2nd Avenue South #D7 Pacheco CA 94553-5560 <br /> [4Mc�Ca=,Tnpbe�llalytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br />' bttp#www mccampbell com E mail mamQmccampbgll com _ <br /> • Advanced GeoEnvironmental, Inc Cient Project ID Flag City Chevron Date Sampled 07/29/02 <br />' 837 Shaw Road Date Received 07/31/02 <br /> Client Contact Tun Cuellar Date Extracted 07/31/02-08/01/02 <br /> Stockton,CA 95215 <br />' Client P O Date Analyzed 07/31/02-08/01/02 <br /> Gasoline Range (C&C12)Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> xtraction method SW503013 Analytical methods SW8021B/8015Cm Work Order 0207451 <br />' Lab ID Client ID Matrix TPH(g) MTBE Benzene Toluene Ethyibenzene Xylenes DF I %SS <br /> 001A Effluent W ND --- ND Nil ND ND 1 102 <br />' 002A Influent W ND - ND ND ND ND 1 102 <br /> Reporting Limit for DF=1, W 50 5 0 05 05 0 5 05 ug/L <br /> means not detected t or <br /> ab S 10 0 05 0 005 0 005 0 005 0 005 <br /> above the reporting limit mg/Kg <br /> *water and vapor samples are reported in ug/L,soil and sludge samples in mg/kg,wipe samples in ug/wipe,product/oil/non-aqueous liquid samples in <br /> mg/L,and TCLP extracts in ug/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 gasolme2),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'7,e)TPH pattern that does not appear to be derived from gasoline(stoddard solvent) f)one to a few isolated non-target peaks present, <br /> g)strongly aged gasoline or diesel range compounds are significant,h)lighter than water immiscible sheen/product is present,i)liquid sample that <br /> contains greater than--2 vol %sediment,J)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be derived from <br /> gasoline(aviation gas) m)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />