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110 2nd Avenue South,#D7 Pacheco CA 94553-5560 <br />' 4 1 McCampbell Analytical, Inc. Telephone 925 798-1620 Fax 925 798 1622 <br /> Website www mccarnpbell com ]`mail mam@mccampbell corn <br /> . Advanced GeoEnvironrnental, Inc Client Project ID Stockton Plating Date Sampled 02/17/05 <br /> 837 Shaw Road Date Received 02/18/05 <br /> Client Contact Bill Little Date Extracted 02/18/05 <br />' Stockton, CA 95215 <br /> Client P O Date Analyzed 02/18/05 <br /> Gasoline Range(C&C12) Volatile Hydrocarbons as Gasoline with BTEX and MTBE* <br /> Extraction method SW5030B Analytical methods SW8021B/8015Cm Work Order 0502287 <br /> Lab D Client]D Matrix TPH(g) MTBE Benzene Toluene Ethylbenzene Xylenes DF SES] <br />' 005A Effluent A ND ND ND ND ND ND 1 108 <br /> 1 <br /> 1 <br /> 1 <br /> I <br />' <br /> Reporting Limit for DF=1, A 25 25 025 025 025 025 1 µg/L <br /> ND means not detected at or <br /> above the reporting limit S NA NA NA NA NA NA 1 mg/Kg <br />' *water and vapor samples and all TCLP&SPLP extracts are reported in gg/L,soil/sludge/solid samples in mg/kg, wipe samples inµg/wipe, <br /> product/od/non-aqueous liquid samples in mg/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 1s significant,b)heavier gasoline range compounds are significant(aged gasoline'),c)lighter gasoline range <br /> compounds(the most mobile fraction)arc significant,d)gasoline range compounds having broad chromatographic peaks are significant,biologically <br /> altered gasoline",c)TPH pattern that does not appear to be derived from gasoline(stoddard solvent/mineral spirit"),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,j)reporting limit raised due to high MTBE content,k)TPH pattern that does not appear to be <br /> derived from gasoline(aviation as) m)no recognizable pattern <br /> IDHS Certification No 1644 Angela Rydelius,Lab Manager <br />