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' 680 Crirsapeake Drive Redwood City CA 9406zi (650) 364 9600 FAX(650)364-9233 <br /> Sequoia 404 N Wlget 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 />' Pacific Environmental Group-Sac Project Unocal 0123,Tracy,CA Sampled 10/6/98 <br /> 1 1315 Sunrise Gold Circle St M Project Number 910-017 1 A Received 10/7/98 <br />' Rancho Cordova,CA 95742 Project Manager Mike Mitchener Reported 10/20/98 <br /> Total Metals by EPA 6000/7000 Series Methods/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 % Nates* <br />' Batch. 8100086 Date Prepared. 1018198 Extraction Method. EPA 3050E <br /> Blan]t 8100086-BLKI <br /> Cadmium 1019/98 ND mg/kg 0 250 <br />' Chromium ND 0 250 <br /> Lead " ND 250 <br /> Nickel ND 100 <br /> Zinc ND 0 250 <br />' LCS 8100086-BS1 <br /> Cadmium 1019198 500 477 mg/kg 800-120 954 <br /> Chromium 500 48 1 800-120 962 <br />' Lead 500 485 " 800-120 970 <br /> Nickel 500 482 800-120 964 <br /> Zinc 500 475 800-120 950 <br /> skatnx Spike 8100086-_MSL 5810085-25 <br /> Cadmium 10/9/98 500 0 288 396 mg/kg 800-120 786 3 <br /> Chromium 500 245 426 900-120 803 <br />' Lead " 500 521 433 800-120 762 3 <br /> Nickel 500 31 2 650 800-120 676 3 <br /> Zinc 500 693 881 800-120 376 3 <br />' Matrix Spike Dun 8100086-MSD1 S810085-25 <br /> Cadmium 10/9/98 500 0 288 406 mg/kg 800-120 806 200 251 <br /> Chromium 50 0 245 432 800-120 815 200 148 <br />' Lead 500 521 448 " 800-120 792 200 386 3 <br /> Nickel 500 31 2 672 800-120 720 200 630 3 <br /> Zinc 500 693 927 800-120 468 200 21 8 3,4 <br /> 1 <br /> 1 <br /> Sequoi alytical-Sacramento *Refer to end of report for text of notes and definitions <br /> inda C Schneider,Laboratory Director Page 9 of 13 <br />