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Sequoia 680 Chesapeake Drive Redwood City CA 9406 (415) 364.9600 FAX(415) 364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988.9673 <br /> TICO Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Kleinfelder-Stockton Project: N/A Sampled: 7/16/98 <br /> 2825 East Myrtle Street Project Number: 20-4202-01.P02 Received: 7/20/98 <br /> Stockton,CA 95205 Project Manager: Tony Martin Reported: 8/11/98 <br /> Organochlorine Pesticides and PCBs by EPA Method 8080A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Matrix Spike(continued) 8070352-MS] 5807216-01 <br /> Surrogate: TCALY 815/98 12.5 9.40 ug/kg 40.0-140 75.1 <br /> Surrogate: Decachlorobiphenyl 1111.5 11.6 40.0-140 101 <br /> Matrix Spike Duo 8070352-MSD1 5807216-01 <br /> Aldrin 8/5/98 2.50 ND 1.84 ug/kg 40.0-140 73.6 50.0 5.59 <br /> Dieldrin 5.00 ND 4.43 40.0-140 88.6 50.0 6.53 <br /> Heptachlor 2.50 ND 2.10 40.0-140 84.0 50.0 0.948 <br /> Surrogate: TCALY 11.5 9.68 40.0-140 77.4 <br /> Surrogate: Decachlorobiphenyl 11.5 13.0 40.0-140 104 <br /> Sequoia Analytical-Sacramento *Refer to end of report fortert of notes and definitions. <br /> /i(da C.Schneider,Labort.tory Director Page 22 of 25 <br /> i <br />