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L <br /> Sequoia680 Chesapeake Drive Redwood City.CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wiget lane Walnut Creek CA 94598 (925)988-9600 FAX(925)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 /> LKleinfelder-Stockton Project: N/A Sampled: 10/21/98 <br /> 2825 East Myrtle Street Project Number: 20-2864-02.E02 Received: 10/23/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 11/10/98 <br /> Diesel Hydrocarbons(C10-C24) by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Rccov. Limits % Limit % Notcs* <br /> L ]Batch: 8110024 Date Prepared: 11/3/98 Extraction Method: EPA 3550A <br /> Blank 81 10024-BLK1 <br /> Extractable Hydrocarbons 11/4/98 ND mg/kg 1.00 <br /> LSurrogate: Pentacosane 0.500 0.532 50.0-150 106 i <br /> LS - <br /> Extractable Hydrocarbons 11/4198 12.5 11.1 mg/kg 60.0-140 88.8 <br /> Surrogate: Pentacosane 110.500 0.545 50.0-150 109 <br /> Matrix SDike 81 10024-MS] 5810278-10 <br /> Extractable Hydrocarbons 11/4/98 12.5 ND 11.2 mg/kg 50.0-150 89.6 <br /> Surrogate: Pentacosaae 0.500 0.545 50.0-150 109 <br /> m�a�rix spike Dupspike Dup 8110024-MSDl S810278-10 <br /> LExtractable Hydrocarbons 11/4/98 12.5 ND 11.6 mg/kg 50.0-150 92.8 50.0 3.51 <br /> Surrogate: Pentacosane 0.500 0.553 50.0-150 111 <br /> i <br /> i <br /> Sequoia alytical-Sacramento *Refer to end of report for text ofnotes and definitions. i <br /> 7 <br /> coda C.Schneider,Laboratory Director Page 7 of 10 <br />