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' (�n 1Wi680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364 9233 <br /> eDJL uoia 404 N get Lane Walnut Creek CA 94598 (915)9a8-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9Z1-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Ground Zero Analysis, Inc Client Proj ID Knowles Rock Sampled 12/21/98 <br /> 1714 Main St Sample Descript KR Efflu Received 12/22/98 <br /> Escalon, CA 95320 Matrix AIR <br /> Analysis Method 8015Mod/8020 Analyzed 12/23/98 <br /> Attention Justin Power Lab Number 9812E05-02 Reported 01107199 <br /> t <br /> C Batch Number GC122398BTEX02A <br /> strument ID GCHP02 <br /> Total Purgeable Petroleum Hydrocarbons (TPPH) with BTEX <br /> Analyte Detection Limit Sample Results <br /> ug/L ug/L <br /> TPPH as Gas 10 38 <br /> Benzene 010 1 4 <br /> Toluene 010 091 <br /> Ethyl Benzene 010 028 <br /> ' Xylenes (Total) 010 29 <br /> Chromatogram Pattern <br /> Unidentified HC CS-C12 <br /> ' Surrogates Control Limits% % Recovery <br /> Tnfluorotoluene 70 130 105 <br /> b <br /> I <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> tEQUOIA ANALYTICAL - ELAP #1210 <br /> ct Manager Page 2 <br />