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S680 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 /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (91 G)921-9600 FAX(916) 921-0100 <br /> ���l�J�/ g��� 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707) 792-1865 FAX(707) 792-0342 <br /> 1551 Industrial Road San Carlos CA 94070-4111 (650)232-9600 FAX{650)232-9612 <br /> 98equoia Analytical Client Project ID 1-905529- Blame Tech Services Inc <br /> 1 , <br /> 1551 Industrial Blvd Matrix Liquid <br /> San Carlos, CA 94070 <br /> Attention Mike Gregory QC Sample Group 9052409-412 Reported Jun 16, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Chromium Nickel Zinc Cadmium Lead <br /> OC Batch# ME060499 ME060499 ME060499 ME060499 ME060499 <br /> 2007MDA 2007MDA 2007MDA 2007MDA 2007MDA <br /> Analy Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Prep Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 <br /> Analyst J Kelly J Kelly J Kelly J Kelly J Kelly <br /> MS/MSD # 9060512 9060512 9060512 9060512 9060512 <br /> Sample Conc N D ND 0 038 mg/L N D 0 056 mg/L <br /> Prepared Date 6/4/99 6/4/99 6/4/99 6/4/99 6/4/99 <br /> Analyzed Date 6/5/99 6/5/99 6/5/99 6/5/99 6/5/99 <br /> Instrument I D # MV-3 MV-3 MV-3 MV-3 MV-3 <br /> Conc Spiked 2 0 mg/L 2 0 mg/L 2 0 mg/L 2 0 mg/L- 2 0 mg/L <br /> Result 22 22 21 22 22 <br /> MS % Recovery 110 110 103 110 107 <br /> Dup Result 22 20 22 21 22 <br /> MSD % Recov 110 100 108 105 107 <br /> RPD 00 95 47 47 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 020 <br /> LCS# LCS060499 LCS060499 LCS060499 LCS060499 LCS060499 <br /> Prepared Date 6/4/99 6/4/99 6/4/99 6/4/99 6/4/99 <br /> Analyzed Date 6/11/99 6/11/99 6/11/99 6/11/99 6/11/99 <br /> Instrument I D # MV-3 MV-3 MV-3 MV-3 MV-3 <br /> Conc Spiked 2 0 mg/L 2 0 mg/L 2 0 mg/L 2 0 mg/L 2 0 mg/L <br /> LCS Result 18 19 20 19 19 <br /> LCS % Recov 90 95 100 95 95 <br /> LCSD Result 19 20 20 19 20 <br /> LCSD % Recov 95 100 100 95 100 <br /> LCS 80-120 80-120 80-120 80-120 80-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br />.SEQUOIA ANAIzWiGAL, #1271 preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> Charlie Westwater **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative % Difference <br /> Project Manager <br /> 9052409 SSS <16> <br />