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SequoiaChesapeake Drive Rcdwood City,CA 94063 5) 364-9600 FAX(415)364-9233 (.D *4 N.Wiget Lane Walnut Creek,CA 94598 010) 988-9600 FAX(510)988-9673 VC0 Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 EMCON Associates Client Project ID: Arco 2168, Stockton Sampled: May 6, 1996: 1433 N. Market Blvd. Sample Matrix: Soil Received: May 6, 1996 Sacramento, CA 95834 Analysis Method: EPA 5030/8015/8020 Reported: May 7, 1996 Attention: Matt Turner First Sample #: 605-0465 TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION Reporting Sample Sample Sample Sample Sample Sample Analyte Limit I.D. I.D. I.D. I.D. I.D. I.D. mg/kg 605-0465 605-0466 605-0467 605-0468 605-0469 605-0470 AS-1 AS-2 AS-3 AS-4 AS-5 AS-6 Composite Composite Composite Composite Composite Composite Purgeable Hydrocarbons 1.0 3.8 3.6 1.7 4.1 3.7 3.9 Benzene 0.0050 N.D. N.D. N.D. N.D. N.D. N.D. Toluene 0.0050 0.0066 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 Xylenes 0.0050 N.D. 0.051 N.D. N.D. 0.0067 N.D. Chromatogram Pattern: Unidentified Unidentified Unidentified Unidentified Unidentified Unidentified Hydrocarbons Hydrocarbons Hydrocarbons Hydrocarbons Hydrocarbons Hydrocarbons >C7 >C8 >C8 >C8 >C7 >C8 Quality Control Data Report Limit Multiplication Factor: 1.0 1.0 1.0 1.0 1.0 1.0 Date Analyzed: 05/06/96 05/06/96 05/06/96 05/06/96 05/06/96 05/06/96 Instrument Identification: GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 GCHP-1 Surrogate Recovery, %: 79 83 77 72 75 75 (OC Limits = 70-130%) Purgeable Hydrocarbons are quantitated against a fresh gasoline standard. Analytes reported as N.D.were not detected at or above the reporting limit. SEQUOIA ANALYTICAL. ELAP #1624 Linda C. Schneider Project Manager/Sacramento Laboratory 6050465.EMC