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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(6 50) 364-9233 <br /> r Sequoia 404 N Wtget Lane Walnut Creek CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)92t-0}00 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707) 792-0342 <br /> Blaine Tech/Chevron Project Chevron Sampled 315199 <br /> 1680 Rogers Ave Project Number 9-8632/990305-55 Received 3/10/99 <br /> San Jose,CA 95I12 Project Manager Christine Lillie Reported 3/26/99 <br /> Total Petroleum=Hydrocarbons as Gasoline and-BTEX,by EPA 8015M/802OM/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> IAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9030428 Date Prepared 3118199 Extraction Method EPA 5030 waters <br /> Blank 9030428-BLK1 <br /> Gasoline 3/18/99 ND ug/l 500 <br /> Benzene 11 ND 0 500 <br /> Toluene to ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND to 200 <br /> Surrogate a,a,a-Trifluorotcluene 300 285 or 630-135 950 <br /> Surrogate 4-Bromoflucrobenzene 300 288 or 650-135 960 <br /> LCS 9030428-BSl <br /> Benzene 3/18199 100 955 ug/! 650-135 955 <br /> Toluene 100 945 " 650-135 945 <br /> 100 879 to 650-135 879 <br /> es(total) 300 276 _1. 650-135 92 0 <br /> Surrogate a a a-Trifluorotoluene " 300 293 - " 650-135 977 <br /> Matrix Spike 9030428-MS1 P903291-01 <br /> Benzene 3/18/99 100 ND 101 ug/1 650-135 101 <br /> Toluene 100 ND 101 650-135 101 <br /> Ethylbenzene 100 ND 924 650-135 924 <br /> Xylenes(total) 300 ND 290 650-135 967 <br /> Surrogate a,a,a-Trifluorotoluene " 300 297 to 650-135 990 <br /> Matrix Spike Dup 9030428-MSD/ P903291-01 <br /> Benzene 3/18/99 100 ND 899 ug/l 650-135 899 200 11 6 <br /> Toluene or100 ND 88 4 650-135 884 200 13 3 <br /> Ethylbenzene 100 ND 81 6 650-135 816 200 124 <br /> Xylenes(total) 300 ND 256 650-135 853 200 125 <br /> Surrogate a a a-Trifluorotoluene 300 284 65 0-135 94 7 <br /> Muota Analytical-Petaluma *Refer to end of report for text of nates and definitions <br /> Page 6 of 9 <br />