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• <br />• <br />124 McCampbell Analytical Inc <br />110 2nd Avenue South, #D7 Pacheco, CA 94553-5560 <br />Telephone 925-798-1620 Fax 925-798-1622 <br />http //www mccampbell com E-mail main rt mccampbell corn <br />Advanced GeoEnvironmental, Inc <br />837 Shaw Road <br />Stockton, CA 95215 <br />Client Project ID Flag City Chevron Date Sampled 05/22/02 <br />Date Received 05/23/02 <br />Client Contact- Tam Cuellar Date Extracted 05/29/02 <br />Client P O Date Analyzed 05/29/02 <br />Gasoline Range (C6 -C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br />traction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0205332 <br />Lab ID <br />Client ID <br />Matrix <br />TPH(g) <br />MTBE <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes <br />DF <br />% SS <br />OOIA <br />Influent <br />W <br />ND <br />22 <br />ND <br />ND <br />ND <br />ND <br />1 <br />103 <br />002A <br />Effluent <br />W <br />NO <br />ND <br />ND <br />ND <br />ND <br />ND <br />1 <br />104 <br />12eporhng Limit for DF =l, <br />ND means not detected at or <br />above the reporting limit <br />W <br />50 <br />so <br />05 <br />05 <br />05 <br />05 <br />ug/L <br />S <br />1 0 <br />005 <br />0 005 <br />0 005 <br />0 005 <br />0 005 <br />mg/Kg <br />*water and vapor samples are reported in ug/L, soil and sludge samples in mg/kg, wipe samples ut ug(vipe, and TCLP extracts in ug/L <br />DF = dilution factor <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 gasoline9, 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 imnvscible sheen/product is present, i) liquid sample that <br />contains greater than --2 vol % sediment, 3) no recognizable pattern, k) TPH pattern that does not appear to be derived from gasoline (aviation gas) <br />DHS Certification No 1644 Edward Hamilton, Lab Director <br />