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Sequoia 680 G . -peake Drive Redwood City. CA 94063 (650) 364-9600 FAX (650) 364-9233 <br /> 404 N. Wiget Lane Walnut Creek. CA 94598 (925) 988-9600 FAX (925) 988-9673 <br /> Analytical 819 Striker Avenue, Suite 8 Sacramento, CA 95834 (916 ) 921 -9600 FAX (916) 921 - 0100 <br /> v4W1455 McDowell Blvd. North, Ste. D Petaluma, CA 94954 (707 ) 792- 1865 FAX (707) 792-0342 <br /> Gettler-Ryan Dublin Client Protect ID . Chevron #9-3232, Stockton Sampled : Mar 11 , 1999 <br /> 6747 Sierra Court, Suite J Sample Matrix: Soil Received : Mar 11 , 1999'. <br /> Dublin, CA 94568 Analysis Method: EPA 5030/8015 Mod. /8020 Reported : Mar 16, 1999::1. <br /> Attention: Greg Gurss First Sample #: 903-1092 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I -D- I .D, I . D. I . D- 1- D. I .D, <br /> mg/Kg 903-1092 903-1093 903-1094 903-1095 903-1096 903-1097 <br /> TK1 -N TK1 -S TK2-N TK2-N (21 ) TK2-S TK2-S (19) <br /> Purgeable <br /> Hydrocarbons 1 .0 N . D . N . D. N . D . N . D . 1 .3 680 <br /> Benzene 0 .0050 N . D . N . D . N. D . N . D . N. D . N. D . <br /> Toluene 0. 0050 N . D. N . D . N. D . N . D . N . D . N. D . <br /> Ethyl Benzene 0.0050 N. D. N. D. N. D . N . D . N . D . 10 <br /> Total Xylenes 0.0050 N . D. N . D. N. D. N . D . 0.0081 65 <br /> MTBE 0.050 0 . 58 1 . 2 0 . 17 N . D. 0.69 N . D. <br /> Chromatogram Pattern: - - Gasoline & Gasoline & <br /> Unidentified Unidentified <br /> Hydrocarbons Hydrocarbons <br /> C6 - C12 C6 - C12 <br /> Quality Control Data <br /> Report Limit Multiplication Factor: 1 .0 1 . 0 1 .0 1 .0 1 .0 100 <br /> Date Analyzed : 3/13/99 3/12/99 3/12/99 3 /12/99 3/ 12/99 3/ 15/99 <br /> Instrument Identification : HP-5 HP-4 HP-4 HP-4 HP-4 HP-4 <br /> Surrogate Recovery, %: 91 92 95 98 93 <br /> (QC Limits = 40-140%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. <br /> Analytes reported as N.D. were not detected above the stated reporting limit. <br /> SEQUOIA ANALYTICAL, # 1271 Please Note: <br /> * Surrogate recovery below detection limit due to dilution . <br /> l�u � (� c.c. Michael Kith , San Juaquin Public Health Services, Environmental Health Division <br /> �Uranne <br /> Fegley <br /> Project Manager <br /> 9031092.GET ai > <br />