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Redwood City, CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> 680 Chesapeake Drive 404 404 N W,get Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Pacific Environmental Group Client Project ID 911 007-1A/5417, Manteca <br /> 2025 Gateway Place, Suite 440 Matrix SOLID <br /> San Jose, CA 95110 <br /> Attention Joe Muzzio Work Order# 9801925 01, 02 Reported Jan 27, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> QC Batch# ME012198601OMDE ME012198601OMDE ME012198601OMDE ME012198601OMDE <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method EPA 3050 EPA 3050 EPA 3050 EPA 3050 <br /> Analyst T Sears T Sears T Sears T Sears <br /> MS/MSD # 9801A3302 9801A3302 9801A3302 9801A3302 <br /> Sample Conc N D N D 11 N D <br /> Prepared Date 1/21/98 1/21/98 1/21/98 1/21/98 <br /> Analyzed Date 1/21/98 1/21/98 1/21/98 1/21/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spike 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> Result 50 49 51 52 <br />• MS % Recovery 100 98 100 104 <br /> Dup Result 49 49 51 52 <br /> MSD % Recov 98 98 100 104 <br /> RPD 20 00 00 00 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS # BLK012198 BLK012198 BLK012198 BLK012198 <br /> Prepared Date 1/21/98 1/21/98 1/21/98 1/21/98 <br /> Analyzed Date 1/21/98 1/21/98 1/21/98 1/21/98 <br /> Instrument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> LCS Result 52 51 52 52 <br /> LCS % Recov 104 102 104 104 <br /> 80-120 80-120 80-120 80-120 <br /> LCS 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 /> 0 SEQUOIA ANALYTICAL 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 /> Tod Granlcher <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative% Difference 9801925 PPP �3> <br />