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Sequoia <br /> 1455 McDowell Blvd North Ste D <br /> 1 Petaluma CA 94954 <br /> 4 (707) 792-1865 <br /> 4D <br /> Analytical <br /> A <br /> 4 nal ytic a l FAX(707) 792-0342 <br /> Ocquoia San Carlos Project Mike Gregory Sampled 6/1199 <br /> 1551 Industial Blvd Project Number L906046 Received 6/2/99 <br /> San Carlos,CA 94070 Project Mana er Mike Gregory Reported 7123199 <br /> Dissolved Metals by EPA 200 Series MethodslQuahty Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9060199 Date Prepared 6t7199 Extraction Method EPA 3010A <br /> Blank 9060199-BLK1 <br /> Cadmium 618199 ND ugll 100 <br /> Chromium ND 100 <br /> Lead ND 750 <br /> Nickel ND 300 <br /> Zinc ND 200 <br /> LCS 9060199-BSI <br /> Cadmium 6/8/99 500 514 ug/l 850-115 103 <br /> Chromium 500 489 850-115 978 <br /> Lead 500 516 850-115 103 <br /> Nickel 500 498 85 0-115 996 <br /> Zinc 500 510 85 0-115 102 <br /> Matrix S ike 9060199-MSI P906070-01 <br /> dmium 618199 Soo ND 449 ug/l 750-125 898 <br /> romium 500 ND 409 750-125 818 <br /> Lead 500 ND 406 750-125 812 <br /> Nickel 500 ND 425 750-125 850 <br /> Zinc 500 ND 432 750-125 864 <br /> Matrix Spike Dup 9060199-MSD1 P906070-01 <br /> Cadmium 618199 500 ND 415 ug/l 750-125 830 200 787 <br /> Chrorruum 500 ND 402 750-12S 804 200 1.73 <br /> Lead 500 ND 423 750-125 846 200 4.10 <br /> Nickel 500 ND 416 750-125 832 200 2 14 <br /> Zinc 500 ND 426 750-125 852 200 140 <br /> oruoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 8of13 <br />