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Sequoia 680 Chesapeake Drive Redwood Ciry,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(92 5)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> ATC Associates,Inc. Project: SUSD/Corporation Yard Sampled: 2/23/99 to 2/24/99 <br /> 1117 Lone Palm Ave.,Suite B Project Number: na Received: 3/1/99 <br /> Modesto,CA 95351 Project Manager: Tom Lutterman Re orted: 3/15/99 <br /> Notes and Definitions <br /> # Note <br /> I The surrogate recovery for this sample is not available due to sample dilution required from high analyte concentration and/or <br /> matrix interference's. <br /> 2 Weathered diesel <br /> 3 The sample was diluted due to the presence of high levels of non-target analytes resulting in elevated reporting limits. <br /> I <br /> 4 This sample was re-analyzed past the recommended EPA holding time with a valid surrogate recovery and similiar analytical results. <br /> 5 This sample was re-analyzed outside of the EPA recommended holding time with acceptable surrogate recoveries. The analytical <br /> data was similiar for both analysis. <br /> 6 High surrogate recovery was confirmed as a matrix effect by a second analysis. <br /> DET Analyte DETECTED <br /> Analyte NOT DETECTED at or above the reporting limit <br /> NR Not Reported <br /> dry Sample results reported on a dry weight basis <br /> - Recov. Recovery <br /> RPD Relative Percent Difference <br /> C--�.poianalytical-Petaluma <br /> Page 28 of 28 <br /> l <br />