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Cresaneake Drive Redwood City, CA 9e .i (650) 364-9600 FAX (650) 364-9233 <br /> sequoia 4t„ N. Wiget Lane Walnut Creek, CA 945,. (925) 988-9600 FAX (925) 988-9673 <br /> M .■"'`rJ� 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916) 921-9600 FAX (916) 921 -0100 <br /> I%ff Analytical 455 McDowell Blvd. North, Ste. D Petaluma, CA 94954 (707) 792- 1865 FAX (707) 792-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650) 232-9600 FAX (650) 232-9612 <br /> Gettler-Ryan - Sac Project: Chevron 9-3232, Stockton, CA Sampled: 5/5/99 to 5/6/99 <br /> 3164 Gold Camp Dr., Ste. 240 Project Number: 346463 .04 Received: 5/7/99 <br /> Rancho Cordova, CA 95670 Project Manager: Rick Fears Reported: 5/ 14, 19/99 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical - Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes• <br /> Batch : 9050111 Date Prepared: 5111199 Extraction Method: EPA 5030B (Me011) <br /> Blank 9050111 -BLKI <br /> Purgeable Hydrocarbons 5/11 /99 ND mg/kg 1 ,00 <br /> Benzene to ND " 0.00500 <br /> Toluene IFND of 0,00500 <br /> Ethylbenzene IF ND IF 0.00500 <br /> Xylenes (total) it ND 0.00500 <br /> Methyl tert-butyl ether 11ND 0.0500 <br /> Surrogate: a,a,a-Triuorotoluene It 0.200 0. 184 If 60. 0-140 92. 0 <br /> LSCS 9050111-BSI <br /> Benzene 5/11/99 0.200 0. 190 mg/kg 70.0- 130 95.0 <br /> Toluene 0.200 0.205 70.0-130 102 <br /> Ethylbenzene 0.200 0.208 70:0- 130 104 <br /> Xylenes (total) 0.600 0.563 70.0-130 93 .8 <br /> Methyl tert-butyl ether 0.200 0. 180 " 70.0- 130 90.0 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0. 184 If 60. 0- 140 92. 0 <br /> Matrix Soilce 9050111 -MS1 S905119-01 <br /> Benzene 5/ 11 /99 0.200 ND 0. 183 mg/kg 60.0- 140 91 .5 <br /> Toluene IF 0.200 ND 0. 194 " 60.0-140 97.0 <br /> Ethylbenzene to 0.200 ND 0. 195 " 60.0-140 97.5 <br /> Xylenes (total) " 0.600 ND 0.537 If 60.0-140 89.5 <br /> Methyl tert-butyl ether " 0. 200 ND 0 . 180 " 60.0- 140 90.0 <br /> Surrogate. a, a, a-Truorotoluene to 0. 200 0. 187 to 60. 0-140 93. 5 <br /> Matrix Spike Duo 9050111 -MSDI S905112AI <br /> Benzene 5/11/99 0.200 ND 0. 184 mg/kg 60.0- 140 92,0 25 .0 0.545 <br /> Toluene It 0.200 ND 0. 187 If 60.0- 140 93.5 25 .0 3.67 <br /> Ethylbenzene It 0.200 'ND 0. 196 60.0- 140 98,0 25.0 0,512 <br /> Xylenes (total) of 0.600 ND 0.538 60.0- 140 89.7 25 .0 0.223 <br /> Methyl tert-butyl ether If 0.200 ND 0. 181 60.0- 140 90,5 25 .0 0,554 <br /> Surrogate a, a, a-Trii luoratoluene It0.200 0. 189 60. 0-140 94.5 <br /> Batch: 9050131 Date Prepared: 5/11/99 Extraction Method : FPA 50308 (MeOH) <br /> Blank 9050131 -BLKI <br /> Purgeable Hydrocarbons 5/11/99 - ND mg/kg 1 ,00 <br /> Benzene ItND " 0.00500 <br /> Toluene ND It 0.00500 <br /> Ethylbenzene ND 0,00500 <br /> Xylenes (total) ND 0,00500 <br /> Methyl tert-butyl ether toND IF 0.0500 <br /> Sequoia Analytical - Sacramento \ 'Refer to end of report for text gfnotes and definitions. <br /> Sandra R. Hanson, Client Services Representatiy Page 9 of 15 <br />