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404 N Wiget lane <br /> S Sequoia Walnut Creek CA 94598 <br /> (925)988-%00 <br /> Analytical 9quoiala18is9co7 <br /> www em <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#6981 Reported <br /> Dublin CA 94568 - Project Manager Scott Polston 08-Jan-01 11 43 <br /> Total Purgeable Hydrocarbons (C6-Ct2) and BTEX 1n Air by DHS LUFT- Quality Control <br /> Sequoia Analytical - Walnut Creels <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1A02019-EPA 5030B[PIT] <br /> Blank(IA02019-BLKI) Prepared&Analyzed 21-Dec-00 <br /> Purgeable Hydrocarbons ND 2 0 mglm3 Air <br /> Benzene ND 0 010 <br /> Toluene ND 0 010 <br /> Ethylbenzene ND 0 010 " <br /> Xylenes(total) ND 0 010 " <br /> Surrogate a a a-Tnfluorololuene 550 600 917 70-130 <br /> Blank(1A02019-BLK2) Prepared&Analyzed 22-Dec-00 <br /> Purgeable Hydrocarbons ND 20 mg/m3 Air <br /> Benzene ND 0 010 <br /> Toluene ND 0 010 " <br /> Ethylbenzene ND 0 010 <br /> Xylenes(total) ND 0 010 <br /> Surrogate a a a-Tnfluorotolueue 544 600 907 70-130 <br /> LCS(IA02019-BSI) Prepared&Analyzed 21-Dec-00 <br /> Benzene 146 0 010 mglm3 Air 2 00 730 65-120 <br /> Toluene 147 0 010 200 73 5 65-120 <br /> Ethylbenzene 143 0 010 200 715 65-120 <br /> Xylenes(total) 428 0 010 600 713 65-120 <br /> Surrogate a a a-Trrfluorotoluene 498 600 830 70-130 <br /> LCS(1A02019-BS2) Prepared&Analyzed 22-Dec-00 <br /> Benzene 350 0 010 mglm3 Air 400 875 65-120 <br /> Toluene 350 0 010 4 00 975 65-120 <br /> Ethylbenzene 344 0 010 4 00 860 65-120 <br /> Xylenes(total) 102 0 010 120 850 65-120 <br /> Surrogate aaa-Trrf7uorotoluene 558 600 930 70-130 <br /> Sequoia Analytical-Walnut Cxeek The results In dus report apply to the samples analyzed in accordance with the char <br /> custody document This analytical report must be reproduced in Its entr <br /> Page 7 of 9 <br />