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Sequoia 819 Striker Avenue Suite 8 <br />Sacramento, CA 95834 <br />(916) 921-9600 <br />FAX (916) 921-0100 <br />WQFAnalytical %vvvw seguotalabs corn <br />Gettler-Ryan - Dublin Project Chevron 9-5775, Lodi, CA Sampled 5/25100 <br />6747 Sierra Court, Ste J Project Number 346408 85 Received 5126100 <br />Dublin, CA 94568 Project Man2Eer Deanna L Harding Reported 6/12100 <br />Total Purgeable Hydrocarbons (C6 -C12) and BTEX by DHS LUFTIQuality 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- 0060078 <br />Blank <br />Purgeable Hydrocarbons <br />Benzene <br />Toluene <br />Ethylbenzene <br />Surrogate a a,a-Trsjluorotoluene <br />Date Prepared 6/5/00 <br />0060078-BLKI <br />6/5/00 ND <br />" ND <br />" ND <br />" ND <br />It ND <br />11 100 115 <br />Extraction Method EPA 5030B (MeOM <br />ug/l Soo <br />0 500 <br />0 500 <br />It <br />0.500 <br />" 0 500 <br />to 600-140 115 <br />LCS <br />0060078-BS1 <br />5005402-02 <br />Benzene <br />6/5100 100 <br />106 ug/l <br />700-130 <br />106 <br />Toluene <br />too <br />106 <br />700-130 <br />106 <br />Ethylbenzene <br />too <br />11 0 to700-130 <br />Ethylbenzene <br />110 <br />Xylenes (total) <br />" 300 <br />326 or700-130 <br />108 <br />109 <br />Surrogate a,a,a-Triuorotoluene <br />or 100 <br />118 or600-140 <br />600-140 <br />118 <br />Matrix Spike <br />0060078 -MSI <br />5005402-02 <br />Benzene <br />615/00 too <br />ND <br />107 ug/l <br />600-140 <br />107 <br />Toluene <br />too <br />ND <br />104 <br />600-140 <br />104 <br />Ethylbenzene <br />10 0 <br />ND <br />108 <br />600-140 <br />108 <br />Xvlenes (total) <br />300 <br />ND <br />323 <br />600-140 <br />108 <br />Surrogate a,a,a-Trifluorotoluene of100 115 to600-140 115 <br />Matrix Spike Duo <br />0060078-MSD1 SMU02-02 <br />Benzene <br />615100 100 <br />ND <br />977 <br />ug(l <br />600-140 <br />97.7 <br />250 <br />909 <br />Toluene <br />100 <br />ND <br />965 <br />or600-140 <br />965 <br />250 <br />748 <br />Ethylbenzene <br />100 <br />ND <br />too <br />to600-140 <br />100 <br />250 <br />769 <br />Xylenes (total) <br />300 <br />ND <br />298 <br />or <br />600-140 <br />99.3 <br />250 <br />8.39 <br />Surrogate a,a,a-Trifluorotoluene <br />100 <br />113 <br />to600-140 <br />113 <br />Batch. 0060080 <br />Date Prepared 616/00 <br />Extraction Method EPA 5030E <br />e0 <br />Blank <br />0060080-BLKI <br />Purgeable Hydrocarbons <br />6/6/00 <br />ND <br />ug/l <br />500 <br />Berme <br />NDto0 <br />500 <br />Toluene <br />ND <br />0.500 <br />Ethylbenzene <br />" <br />ND <br />0 500 <br />Xylenes (total) <br />to <br />ND <br />It <br />0 500 <br />Surrogate a a a-Trifluorotoluene <br />or100 <br />108 <br />600-140 <br />108 <br />ISS_ <br />0060080 -BSI <br />Benzene <br />6/6100 100 <br />104 <br />ug/l <br />700-130 <br />104 <br />Toluene <br />It100 <br />103 <br />1,700-130 <br />103 <br />Sequoia Analytical - Sacramento "Refer to end of report for text of notes and definitions <br />Page 6 of 10 <br />