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1 <br /> 110 2nd Avenue South 4D7,Pacheco CA 94553-5560 <br /> McCampbell Analytical Inc Telephone 925-798-1620 Fax 925-798-1622 <br /> -7' http/1WWW mccampbell com E-mail main c@mceampbell com <br /> Advanced GeoEnvironmental, Inc Client Project ID Flag City Chevron Date Sampled 09/05/02 <br />' 837 Shaw Road Date Received 09/06/02 <br /> Stockton, CA 95215 Client Contact Tim Cuellar Date Extracted 09/10/02-09112/02 <br />' rChent P O Date Analyzed 09/10/02-09112/02 <br /> Gasoline Range(C6-C12)Volatile Hydrocarbons as Gasoline* <br /> trachon method SW503013 Analytical methods 8015Cm Work Order 0209081 <br />' Lab ID Client ID Matrix TPH(g) DF %SS <br /> 001A MW1/090502 W ND 1 106 <br />' 002A MW2/090502 W ND 1 981 <br /> 003A MW4/090502 W ND,i 1 101 <br />' 004A MW5/090502 W ND 1 990 <br /> I 005A MW6A/090502 W ND,i 1 945 <br /> 006A MW613/090502 W ND 1 995 <br /> 007A MW7/090502 W ND,t 1 102 <br /> 008A MW8A/090502 W ND l 108 <br /> 009A MW9A/090502 W ND 1 101 <br /> Ila <br /> OIOA MWIOC/090502 W ND 1 104 <br /> 011A MW10D/090502 W ND 1 107 <br /> 012A MW10E/090502 W ND 1 991 <br /> 013A MW I I A/0905/02 W ND,i 1 990 <br /> 014A MW12B/090502 W ND 1 975 <br /> 015A EW2/090502 W ND 1 986 <br /> 016A EW41090502 W ND 1 982 <br /> I Reporting Limit for DF—1, W 50 µ91L <br /> ND means not detected at or <br /> above the reporting lirrut S NA NA <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 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 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,,1)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 />