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Sequoia <br /> yu O�� 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> J 404 N Wiget Lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)92( 9600 FAX(916)92 1-0 100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792 1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos CA 94070 41 1 1 (650) 232 9600 FAX(650)232-9612 <br /> EMCON-Sac Project ARCO 2130,Stockton,CA <br /> 1433 N Market Blvd Sampled 3/31/99 <br /> Project Number 21775-229 004 Received 4/1/99 <br /> Sacramento,CA 95834 Project Manager Dave Foley Reported 4/15199 <br /> Total Purgeable Hydrocarbons(C6-02), BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits <br /> Limit Result Units Notes* <br /> i <br /> MW-I (73 S904029-01 <br /> Purgeable Hydrocarbons 9040133 4/12/99 4/12/99 500 152 ug�/1 1 <br /> Benzene „ <br /> Toluene „ 0 500 ND " <br /> Ethylbenzene 0 500 ND " <br /> " <br /> Xylenes(total) 0 500 ND0 500 ND <br /> Methyl tert-butyl ether 5 00 ND " <br /> Surrogate a,a a-Truoratoluene 60 0-140 <br /> 126 <br /> 2) SQ04029-02 Water <br /> Purgeable Hydrocarbons 9040133 4/12/99 4/12/99 <br /> Benzene „ 500 987 ug/l 2 <br /> Toluene „ 0 500 660 " <br /> Ethylbenzene „ 0 500 0 690 " <br /> Xylenes(total) 0 500 0 579 " <br /> �ftl tert-butyl ether „ 0 500 233 " <br /> " <br /> SMWafe a a,a-Trtfluorotoluene 500 655 <br /> 0-140 gg 0 <br /> ME-3-CU) S20407s9�0 <br /> Purgeable Hydrocarbons 9040133 4/12/99 4/12199 Rate50 0 ND ug/I <br /> Benzene <br /> Toluene 0 500 0 540 " <br /> Ethylbenzene „ 0 500 ND " <br /> " <br /> Xylenes(total) 0 500 ND0 500 ND " <br /> Methyl tert-butyl ether 5 00 ND <br /> Surrogate a a a-Tr fluorotoluene " 60 0 140 97 5 <br /> esas 5204029-04 <br /> 9 Wate 9040133 4/12/99 4/12/ <br /> Benzene 500 C <br /> ND ug/l <br /> Toluene „ 0 500 ND „ <br /> Ethylbenzene " " „ 0 500 ND <br /> 0 500 ND <br /> Xylenes(total) 0 500 ND <br /> Methyl tert-butyl ether 5 00 ND <br /> Suirogate a a a-7�iuorotoluene 600-140 - yN 9 <br /> YJ <br /> MW-5(751 S.Q04029-05 ter <br /> Wa <br /> PulgeableHydrocarbons 9040133 4/12/99 4/12/99 500 ND Wa <br /> Benzeneugll <br /> Toluene <br /> 0 500 133 " <br /> Ethvlben>enc <br /> n 5011 0 586 <br /> " <br /> Xylen0 500 NDcs(total) 0 500 152 " <br /> seqIWAnalytical Sacramento - `Refer to end of report for text of notes and definitions <br /> Would W Bobel,Client Services Representative <br /> Page 2 of 9 <br />