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cbCurtis &Tompkins, Ltd <br /> Curtis & Tompkins Laboratories Analytical Reggrt <br /> Lab # : 171535 Location; SDHR-Stockton <br /> Client: Treadwell & Rollo Prep: EPA 5030D <br /> Pro`ect# : 2597 .10 <br /> Matrix: Soil Sampled: 04/02/04 <br /> Basis: as received Received: 04/02/04 <br /> Field ID: 15UST-STOCKPILE Diln Fac; 20 . 00 <br /> Type: SAMPLE Batch#: 89966 <br /> Lab ID: 171535-017 Analyzed: 04/02/04 <br /> Anal to ReSul.t <br /> Gasoline C7-C12 350 H Y 20 mg Kg EPA B015B <br /> Benzene ND 100 ug/Kg EPA 8021B <br /> Toluene ND 100 ug/Kg EPA 8021B <br /> Ethylbenzene 1, 800 C 100 ug/Kg EPA 8021B <br /> m,p-Xylenes ND 100 ug/Kg EPA 8021B <br /> o-X leve 1, 800 C 100 ug/Kq ug/KEPA 8021B <br /> Anal sis< <br /> Trifluorotoluene (FID) 94 71-138 EPA 8015B <br /> Bromofluorobenzene (FID) 215 * >LR b 73-143 EPA 8015B <br /> Trifluorotoluene (PID) 82 55-135 EPA 802113 <br /> Bromofluorobenzene PID 114 58-135 EPA 8021B <br /> Field ID: 15B6-BOT4-3 Diln Fac: 1.000 <br /> Type : SAMPLE Batch#: 90339 <br /> Lab ID: 171535-018 Analyzed; 04/15/04 <br /> An <br /> a:l to Result R s . . ,_ a7 s:i <br /> Gasoline C7-C1' 1.5 H Y 1.0 mg Kg EPA 8015E <br /> Benzene ND 5.2 ug/Kg EPA 802113 <br /> Toluene ND 5 .2 ug/Kg EPA 8021B <br /> Ethylbenzene ND 5.2 ug/Kg EPA 8021E <br /> m,p-Xylenes ND 5 .2 ug/Kg EPA 8021B <br /> o-X lene ND 5 .2 ucr/Kci EPA 8021E <br /> Sumo ate .; : %REC Limits Analysis <br /> . <br /> Trifluorotoluene (FID) 97 71-138 EPA 8015E <br /> Bromofluorobenzene (FID) 133 73-143 EPA 8015E <br /> Trifluorotoluene (PID) 95 55-135 EPA 8021B <br /> Bromofluorobenzene PID 113 58-135 EPA 8021E <br /> *= value outside of QC limits; see narrative <br /> C= Presence confirmed, but RPD between columns exceeds 40% <br /> H= Heavier hydrocarbons contributed to the quantitation <br /> Y= Sample exhibits chromatographic pattern which does not resemble standard <br /> b= See narrative <br /> ND= Not Detected <br /> RL= Reporting Limit <br /> >LR= Response exceeds instrument' s linear range <br /> Page 6 of 9 � � <br />