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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FM(650)364-9233 404 N.Wlget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 Analytical 819 Strlker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 :...... _..3ettler-Ryan-Dublin Client Project ID: Tosco #11195, Lathrop Sampled:. ..... Jan '6, 1999 .:4747 Sierra Court, Suite J Sample Matrix: Soil Received: Jan 6, 1999::::: Dublin, CA 94568 Analysis Method: EPA 5030/8015 Mad./8020 Reported: Jan 7, 1999". Attention: Clyde Galantine First Sample #: 901-0220 OC Batch Number SP010799 SP010799 SP010799 SP010799 SP010799 SP010799 8020EXA 8020EXA 8020EXA 8020EXA 8020EXA 8020EXA TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX / MTBE Reporting Sample Sample Sample Sample Sample Sample Analyte Limit I.D. I.D. I.D. I.D. 1.D. I.D. mg/Kg 901-0220 901-0221 901-0222 901-0223 901-0224 901-0225 SP-8 SP-9 SP-10 SPS 1 SP-12 SP-13 Purgeable Hydrocarbons 1.0 N.D. 2.5 N.D. N.D. N.D. 1.3 Benzene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D. Toluene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D. Ethyl Benzene 0.0050 N.D. N.D. N.D. N.D. N.D, N.D. == Total Xylenes0.0050 N.D. 0.0064 N.D. N.D. N.D. 0.013 MTBE 0.050 0.12 N.D. 0.91 0.35 0.41 2.3 Chromatogram Pattern: Unidentified Unidentified Hydrocarbons Hydrocarbons >G8 >C8 Quality Control Data Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0 Date Analyzed: 1/7/99 1/7/99 1/7/99 1/7/99 1/7/99 1/7/99 Instrument Identification: HP-4 HP-4 HP-4 HP-4 HP-4 HP-4 Surrogate Recovery, %: 93 88 83 79 87 83 (GC Limits = 40-140%) Purgeable Hydrocarbons are quantitated against afresh gasoline standard. Analytes reported as N.D,were not detected above the stated reporting limit, SEQUOIA ANALYTICAL, #1271 egley Project Mana r 9010220.GET <1>