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' cb <br /> Curtis &Tompkins Ltd <br /> Curtis & 'rompkir:a Laboratories Analytical RPO rt <br /> Lab # 167772 Location Brenkwitz Tracy <br /> Client Treadwell & Rollo Prep EPA 5030B <br /> ' Pro ect# 3577 01 <br /> BASIS as received Receive 09/25/03 <br /> Sampled 09/24/03 <br /> ' Type BLANK Diln Fac 1 000 <br /> Lab ID QC227173 Batch# 84884 <br /> Matrix Water Analyzed 09/27/03 <br /> ' Units ug/L <br /> k3 4 SY1 S <br /> Gasoline C7-C12 ND 200 8015B <br /> MTBE ND 4 0 EPA 8021B <br /> Benzene ND 1 0 EPA 8021B <br /> Toluene ND 1 0 EPA 8021B <br /> Ethylbenzene ND 1 0 EPA 8021B <br /> m,p-Xylenes ND 1 0 EPA 8021B <br /> o-X lene ND 1 0 EPA 8021E <br /> Surro ate REC Limits 11r�a s <br /> Trifluorotoluene (FID) 92 56-144 8015B <br /> Bromofluorobenzene (FID) 103 51-142 8015B <br /> ' Trifluorotoluene (PID) 71 45-150 EPA 8021D <br /> Bromofluorobenzene PID 81 42-138 EPA 8021B <br /> 1 <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 /> Lighter hydrocarbons contributed to the quantitation <br /> = Sample exhibits chromatographic pattern which does not resemble standard <br /> ' = Not Detected <br /> RL= Reporting Limit <br /> Page 4 of 4 10 <br />