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680 Chesapeake Drive Redwood Q4 <br /> City CA 94063 (650)369600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Geek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-%W FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North,Ste D Petaluma CA 94954 (707)792-1865 FAX(707)7924342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> Gettler Ryan,Inc -Dublin Project Unocal <br /> 6747 Sierra Court Suite J Project Number Former Unocal#0123 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 04-Oct-99 10 17 <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 Lmuts RPD Limit Notes <br /> Batch 9115013: Prepared 15-Sep-99 Using EPA 5030B EPffl <br /> LCS(9I15013-BSI) w <br /> Benzene 204 050 ugll 200 102 70-130 <br /> i <br /> Toluene 185 050 200 925 70-130 <br /> Ethylbenzene 197 050 200 985 70-130 <br /> Xylenes(total) 640 030 600 I07 70-130 <br /> Surrogate a a a-Tnfluoroioluene 282 300 940 70-130 <br /> Matrix Spike(9I15013-MSI) Source W909217-04 <br /> Benzene 196 050 ugil 200 ND 980 70-130 <br /> Toluene 178 050 200 ND 890 70-130 <br /> ElhNibenzene 189 0 50 20 0 N 945 70-130 <br /> \vlene-(total) 60 8 0 50 600 ND 101 70-130 <br /> Surrogare a a a-Tnfluorotoluene 2-5 300 91 - -0-130 • <br /> Matrix Spike Dup (9115013-hISDI) Source W909217-041 <br /> Benzene 19 Z< 050 ug] 200 \D 990 70-130 1 02 20 <br /> Toluene 180 0 50 200 ND 900 70-130 1 12 20 <br />�Ethylhenzene 18 U 0 50 20 U ND 90 0-X70-130 -i 8820 <br /> \vLnes(total) 61 1 0 50 600 ND 102 70-130 0 492 20 <br /> Surrogate arc a-Tnfluorotoluerre 2-- 300 �0-'3 -t1.1 Jr1 <br /> Sequoia Analytical- Walnut Creek The rye+win to tin r report apply to the uauplet analro:ed in accordance with the charm of <br /> carrody document Tlrrsanalyttcal rep ort muit he rspraxluced in itv enfrren <br /> U 7 <br /> vg Lv 1'roj-Lc--t-MjnjgeV Page, 12 of 16 <br />