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is 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> Sequo 404 N Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates, Inc Client Prol ID Ripon USD 13099 0001 Sampled 01/29/99 <br /> 1117 Lone Palm Avenue Sample Descrlpt MW-1 Received 01/29/99 <br /> Modesto, CA 95351-1502 Matrix LIQUID Extracted 02/02/99 <br /> Analysis Method EPA 8015 Mod Analyzed 02/02/99 <br /> Attention Jeanne Homsey Lab Number 9901E93-01 Reported 02/09199 <br /> InC Batch Number GCO202990HBPEXB <br /> strument ID GCHP4A <br /> Total Extractable Petroleum Hydrocarbons (TEPH) <br />' Analyte Detection Limit Sample Results <br /> ug/L ug/L <br />' TEPH as Diesel 200 4100 <br /> Chromatogram Pattern <br /> Unidentified HC C9-C24 <br /> Surrogates Control Limits % % Recover <br /> n-Pentacosane (C25) 50 150 1960 <br /> P <br /> 1 <br /> Analytes reported as N D were not present above the stated limit of detection <br /> LEGUOIA ANALYTICAL - ELAP 41210 <br /> jWroject Manager Page 2 <br />