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J - <br /> Lane <br /> iget <br /> Sequoia Walnut 94598 <br /> (925)988-9600 <br /> Analytical FAX(925)988-9673 <br /> �,,,O <br /> (As <br /> ettler Ryan/Geostrategies-Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Former Unocal Station 2859 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 03-Sep-9910 15 <br /> Total Purgeable Hydrocarbons (C&C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical - Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Lunit Notes <br /> Batch 9H31021 Prepared 30-Aug-99 Using EPA 5030B [PIT] <br /> Matrix Spike Dup (9H31021-MSDI) Source W908392-13 <br /> Benzene 208 050 ug/l 200 ND 104 60-140 23 1 20 <br /> Toluene 187 050 200 ND 935 60-140 274 20 <br /> Eth}Ibenzene 18 6 050 200 ND 930 60-140 195 20 <br /> Nylenes(total) 63 5 050 600 ND 106 60440 228 20 <br /> Surrogate a aa.Trifluorotoluene 289 300 9613 70-130 <br /> Batch 9I01010. Prepared 31-Aug-99 Using EPA 5030B [P/TJ <br /> Blank(9101010-BLKI) <br /> Purgeable H}dro,-arbons ND 50 ug/1 <br /> Benzene ND 050 <br /> Toluene ND 050 <br /> (lalbenzene ND 050 <br /> nes(total) ND 050 <br /> NI ethyl tent butt'1 ether ND 2 5 <br /> Surrogate aaa-Irruorotoluene 271 300 903 70-130 <br /> Sequoia Analytical-Walnut Creek The re iulty in rias report ripply to th3 samples analyzed in accordmee with the churn of <br /> custody document This analytical report must be reproduced in tis enttrety <br /> ID VJ C:&�G I <br /> u e cg eV, roject Manag# Page 5 of 6 <br /> ti <br /> i �t� <br />