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660 Chesapeake Dnve Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Walnut Creek CA 94598 (9Z5)986-9600 FAX(925)988-9673 <br /> 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 Industnal Road San Carlos CA 94070-4111 (650) 232-9600 FAX(650)232-9612 <br /> Pacific Environmental Group-Sac Project Chevron, 1001621 Banta CA Sampled 2/23/99 <br /> 11315 Sunrise Gold Circle St M Project Number 920 002 2D Received 2/26/99 <br /> Rancho Cordova,CA 95742 Project Manager Chris Brown Reported 3/12/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Nates* <br /> MW 16 S90234910 Wate <br /> Purgeable Hydrocarbons 9030039 3/3/99 313/99 500 267 ug/l 1 <br /> Benzene 0 500 275 <br /> Toluene 0 500 0 660 " <br /> Ethylbenzene 0 500 539 <br /> Xylenes(total) 0 500 162 <br /> Methyl tent-butyl ether 500 83 6 <br /> Surrogate a,a,a-Tnfluorotoluene 600-140 112 % <br /> MW17 5902349-11 Water <br /> Purgeablc Hydrocarbons 9030038 3/2/99 3/2/99 500 ND ug/l <br /> Benzene 0 500 ND <br /> Toluene 0 500 ND " <br /> enzene 0 500 ND " <br /> s(total) „ 0 500 ND <br /> Methyl tent-butyl ether 5 00 145 <br /> Surrogate a,a a-Tree luorotoluene 600-140 110 % <br /> MW 18 S902342-12 Watet <br /> Purgeable Hydrocarbons 9030038 312/99 3/2/99 500 ND ug/l <br /> Benzene 0 500 ND <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND <br /> ND <br /> Xylenes(total) 0 500 <br /> Methyl tert-butyl ether 5 00 4775 <br /> 5 " <br /> Surrogate a,a,a-Tnfluorotoluene 600-140 108 % <br /> 9 5902349-13 Water <br /> Purgeable Hydrocarbons 9030038 3/2199 3/2/99 500 ND ug/l <br /> Benzene <br /> 0 500 ND <br /> Toluene 0 500 ND " <br /> Ethylbenzene 0 500 ND <br /> Xylenes(total) 0 500 ND <br /> Surrogate a,a,a-Trifluorotoluene " 600-140 108 <br /> Methyl tert-butyl ether 9030039 3/3/99 313/99 200 216 ug/l D <br /> Surrogate a,a,a-Tnfluorotoluene <br /> 600-140 106 % <br /> 11 5902349-14 Water <br /> Purgeable Hydrocarbons 9030038 312/99 3/2199 500 ND ug/l <br /> Benzene 500 ND <br /> " <br /> 0 500 ND <br /> We D <br /> e <br /> 0 500 ND <br /> nzene <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> 12 <br /> Sandra R Hanson,Client Services Representative Page 5 of 17 <br />