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+ r� <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek, CA 94598 <br /> (925)988-%W <br /> Analytical FAX(925)988-9673 <br /> vp <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#16981 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 10-Feb-0O 1 l 00 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source °/�C RPD <br /> Analyte Result Limit Units Level Result °/aREC Limits RPD Limit Notes <br /> m <br /> Batch OB03003: Prepared 03-Feb-00 Using EPA 5030B IT <br /> Blank(OB03003-BLKI) <br /> Purgeable Hydrocarbons ND 50 ugll <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 " <br /> Xylenes(total) ND 050 " <br /> Methyl tert-butyl ether <br /> ND 25 „ <br /> Swrogate aaa-Triflumotoluene 305 300 102 70-130 <br /> LCS(OB03003-13SI) <br /> Benzene 190 050 ugll 200 <br /> 95 0 70-130 <br /> *Ee=.Ie <br /> 195 050 200 975 70-130 <br /> 19 6 0 50 200 990 70-130 <br /> Xylenes(total) 563 050 600 93 8 70-130 <br /> Surrogate a,a a Trifluorotoluene 298 300 993 70-130 <br /> Matrix Spike(OB03003-MSI) Source W001654-02 <br /> Benzene 19 4 050 ugll 200 ND 970 70-130 <br /> Toluene 212 050 200 ND 106 70-130 <br /> Ethylbenzene 208 050 200 ND 104 70-130 <br /> Xylenes(total) 606 050 60 0 ND 101 70-130 <br /> Surrogate a,a,a-Trifluorotoluene 284 300 947 70-130 <br /> Matrix Spike Du (OB03003-MSD1) Source W001654-02 <br /> Benzene 200 050 ugll 200 ND 100 70-130 305 20 <br /> Toluene 20 8 050 200 ND 104 70-130 190 20 <br /> Ethylbenzene 205 050 200 ND 103 70-130 145 20 <br /> Xylenes(total) 594 050 600 ND 990 70-130 200 20 <br /> Surrogate a,a,o-Trilluorotoluene 284 300 -047 70-130 <br /> O1S Analytical -Walnut Creek 77te results in tis report apply to the samples ana&ad to a conlanae with the chaen ofcustody <br /> document Ths analyocal repat must be reproducedin ttr enarety <br /> �rAlan B Kemp,Laboratory Director Page 16 of 20 <br />