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Sequoia 404 N ,CA Lane <br /> Walnut Creek,CA 94598 <br /> ,! 6 (925)985-9600 <br /> - Analytical FAX(925)98&9673 <br /> ttler Ryan,hic -Dublm Project Unocal <br /> ,6747 Sierra Court Suite 7 Project Number Former Unocal SS4 0187 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 08-Sep-49 18 19 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> byte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 9I01011- Prepared 31-Aug-99 Using EPA 5030B [PIT] <br /> Blank(9101011-BLK1) <br /> Purgeable Hydrocarbons ND SO ugfl <br /> Benzene ND 050 " <br /> Toluene ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylencs(total) ND 050 <br /> Surrogate aaa-TnJluorotoluene 178 300 917 70.1.30 <br /> LCS(9101011-BSI) <br /> Benzene 23 6 0 50 ug/1 20 0 118 70-130 <br /> Toluene 223 050 200 111 70-130 <br /> Ethylbenzene 21 5 050 200 108 70-130 <br /> `tylenes(total) 65 1 0 50 600 108 70-130 <br /> agate aaa-Tnfluorvtoluene 312 300 107 70-130 <br /> Matrix Spike(9I01011-MSI) Source W908448-04 <br /> Benzene 244 050 uyl 20 0 122 70-130 <br /> Toluene 230 0 50 200 115 70-130 <br /> Ethylbenzene 224 0 50 200 112 70-130 <br /> Xylenes(total) 67 4 050 600 112 70-130 <br /> Surrogate arta-Tnfluorotoluef+e 198 a00 993 -0-1.J0 <br /> Matrix Spike Dup (9101011-NISD1) Source W908.148-04 <br /> Benzene 24 1 0 50 ugil 20 0 121 70-130 1 24 20 <br /> Toluene 228 050 200 114 70-130 0 873 20 <br /> Ethylbenzene 223 050 200 111 70-130 0 447 20 <br /> \ylenes(total) 67 2 0 50 600 112 70-130 0 297 20 <br /> Surrogate as a-Tri luorolvluerre 295 300 98 3 70-130 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the stmtples analyzed incrcordmce with the chem of <br /> custody document This analytical report must be reproduced in its enarrry <br /> uee <br /> ey, rojeLt anag Page 4 of 5 <br />