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404 N Wlget Large <br /> Walnut Creek.CA 94598 <br /> Sequoia FAX(925}988-96 37 <br /> %07 Analytical www "°` corn <br /> Getfler Ryan,Inc -Dublin Project Unocal <br /> 6747 Siena Court Suite J Project Number Former Unocal#4409 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 26431ct-00 18 31 <br /> Total Purgeable Hydrocarbons (C6-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 Lm uts RPD Limit Notes <br /> Batch 0319002-EPA 5030B [P/71 <br /> Blank(0319002-BLKI) Prepared&Analyzed 19-Oct-00 <br /> Purgeable Hydrocarbons ND 50 urll <br /> Benzene ND 050 " <br /> Tollm" ND 050 " <br /> Ethylbenzene ND 050 <br /> Xylenes(total) ND 050 " <br /> Methyl tett-butyl ether ND 25 " <br /> Surrngate aaa-Triijhorotoluene 297 300 990 70-130 <br /> LCS(OJ19002-BS1) Prepared&Analyzed 19-Oct-00 <br /> Benzene 191 050 U94 200 955 70-130 <br /> Tohune 197 050 200 985 70-130 <br /> Ethylbenzene 206 050 " 200 103 70-130 . <br /> Xylenes(tow) 613 050 600 102 70-130 <br /> Surrogate aaa-Tnfluorotoluene 291 300 970 70.130 <br /> Matra Spike(OJI9002-MSI) Source W010244-02 Prepared&Analyzed 19-Oct-00 <br /> Benzene 197 0 50 ug/l 200 ND 98 5 70-130 <br /> Toluene 203 050 200 ND 101 70-130 <br /> Ethylbenzene 209 0 50 200 ND 104 70.130 <br /> Xylenes(total) 625 050 600 ND 104 70-130 <br /> Surrogate acta-Mfluorotoluene 29 7 300 990 70-130 <br /> Matnx Spike Dup(0319002-MSD1) Source W010244-02 Prepared&Analyzed 19-Oct-00 <br /> Benzene 190 0 50 uga 200 ND 95 0 70-I30 362 20 <br /> TONCIM 19 8 050 200 ND 99 0 70-130 2 49 20 <br /> &hylbenzene 201 0 50 200 ND 101 70-130 390 20 <br /> Xylenes(total) 614 050 " 600 ND 102 70-130 178 20 <br /> Surrogate aa;a-2wfluorotoluem 300 30.0 100 70.130 <br /> Sequoia Analytical-Walnut Creek The results in thus report apply to the samples analyzed in accordance with the chino <br /> custody docnow t?Ins analytical report must be reproduced in its m <br /> Page 6 of 9 <br />