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1r <br />110 Second Avenue South, #D7, Pacheco, CA 94553 <br />MCCAMPBELL ANALYTICAL INC. Telephone : 510-798-1620 Fax : 510-798-1622 <br />htto://www.m22gM2bell.com E-mail: main@mccampbell.com <br />Advanced GeoEnviromnental <br />1803 West March Lane, Ste A <br />Stockton, CA 95207 <br />Client Project ID: Cherokee Truck Stop <br />Date Sampled: 09/18-09/22/97 <br />Date Received: 09/23/97 <br />Client Contact: Kevin McKibben <br />Date Extracted: 09/23/97 <br />Client P.O: <br />Date Analyzed: 09/23-09/29/97 <br />Diesel Range (C10 -C23) Extractable Hydrocarbons as Diesel <br />EPA methods modified 8015, and 3550 or 3510; California RWQCB (SF Bay Region) method GCFID(3550) or GCFID(3510) <br />Lab ID <br />Client ID <br />Matrix <br />TPH(d)` <br />%Recovery <br />Surrogate <br />81043 <br />T2 -E <br />S <br />26,OOO,a,d <br />109 <br />81044 <br />T3 -E <br />S <br />32,OOO,a,d <br />95 <br />81045 <br />T3 -W <br />S <br />II,000,a <br />108 <br />81046 <br />T4 -E <br />S <br />28,OOO,a <br />109 <br />81047 <br />T4 -W <br />S <br />ND <br />93 <br />81048 <br />T5 -E <br />S <br />ND <br />106 <br />81049 <br />T6 -N <br />S <br />310,b,d <br />104 <br />81050 <br />T6-17 <br />S <br />I1,000,a,d <br />111 <br />Reporting Limit unless otherwise <br />stated; ND means not detected above <br />the reporting limit <br />W <br />50 ug/L <br />S <br />1.0 mg/kg <br />' water and vapor samples are reported in ug/L, wipe samples in ug/wipe, soil and sludge samples in mg/kg, and all TCLP / STLC / SPLP <br />extracts in ug/L <br />" cluttered chromatogram resulting in coeluted surrogate and sample peaks, or; surrogate peak is on elevated baseline, or; surrogate has been <br />diminished by dilution of original extract. <br />'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br />interpretation: a) unmodified or weakly modified diesel is significant; b) diesel range compounds are significant; no recognizable pattern; c) <br />aged diesel? is significant); d) gasoline range compounds are significant; e) medium boiling point pattern that does not match diesel (?); f) <br />one to a few isolated peaks present; g) oil range compounds are significant; h) lighter than water immiscible sheen is present; i) liquid <br />sample that contains greater than —5 vol. % sediment. <br />DHS Certification No. 1644 <br />/1// Edward Hamilton, Lab Director <br />