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404 N Wlget Lame <br /> ` Sequoia Walnut Creek, CA 94598 <br /> (925)988-9600 <br /> Analytical FAX(925)988-9673 <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite 1 Project Number Tosco(✓6981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10-Feb-0O 11 00 <br /> Total Purgeable Hydrocarbons (C6-C12),BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reportmg Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch OB03001: Prepared 03-Feb-00 Using EPA 5030BJP/TJ <br /> Blank(OB03001-BLKI) <br /> Purgeable Hydrocarbons ND 50 ug/1 <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tent-butyl ether ND 25 " <br /> Surrogate a a a-Trifluorotoluene 273 300 910 70-130 <br /> LCS(OB03001-BSI) <br /> Benzene 16 9 050 ug/1 200 <br /> Sas 70-190 <br /> Be <br /> e 17 3 050 200 865 70-130 <br /> E ty benzene 186 050 200 930 70-130 <br /> Xylenes(total) 563 050 600 938 70-130 <br /> Surrogate a a a-Trifluorotoluene <br /> 283 300 943 70-130 <br /> Matrnx Spike(OB03001-MSI) Source W001650-04 <br /> Benzene 181 050 ug/1 200 ND 905 70-130 <br /> Toluene 185 050 200 ND 925 70-130 <br /> Ethylbenzene 168 050 200 ND 840 70-130 <br /> ;Cylenes(total) 601 050 600 ND 100 70-130 <br /> Surrogate a a o-Trifluorotoluene 274 300 913 70-130 <br /> Matm Spike Dup(OB03001-MSDI) Source W001650-04 <br /> Benzene 173 050 ug/l 200 ND 865 70-130 452 20 <br /> Toluene 178 050 200 ND 990 70-130 386 20 <br /> Ethylbenzene 177 050 200 ND 885 70-130 522 20 <br /> xylenes(total) 582 050 600 ND 970 70-130 321 20 <br /> Surrogate a a a-Trrfluorotoluene 271 300 907 70-130 <br /> oia Analytical -Walnut Creek The results in the report apply to the samples analyzed bt accordance with the churn ofcustody <br /> document Tlrs analytical repert must be reproduced in its entirety <br /> i Alan B Kemp,Laboratory Drector Page 14 of 20 <br />