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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wlget Fane 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 /> Upgradient Environmental Consultants Pr4lect Conrady Property Sampled 9124198 <br /> 336 Augusta Court Project Number NIA Received 9/24/98 <br /> Val ley S ,CA 95252 Project Man" er Vic Cherven Reported 1018198 <br /> Total Purgeable Hydrocarbons(C6-C12) and BTEX by DHS LUP'T/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> [A,7alyte Anal zed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike Duo 8100074-MSQI 5809318-01 <br /> Benzene 10/5/98 10 0 ND 104 ug/l 600-140 104 25 0 0 <br /> Toluene 10 0 ND 9 86 600-140 986 25 0 0 101 <br /> Ethylbenzene 100 ND 956 600-140 95 6 25 0 104 <br /> Xylenes(total) 30 0 ND 28 5 600-140 950 25 0 0 734 <br /> Surrogate a a a-Trifluorotoluene 10 0 9 61 600-140 96 1 <br /> uoxa Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> A <br /> Linda C Schneider,Laboratory 13G1r`eectvtor_' Page 6 of 7 <br />