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I680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> Sequoia <br /> 4 404 N Wiget Lane Walnut Creek.CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical <br /> Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> A <br /> nalytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> 1551 Industrial Road San Carlos, CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> l <br /> Cambria Environmental Tech Client Project 1D Shell 341 Main St , Ripon <br /> 1144 65th St , Ste C Matrix Liquid <br /> Oakland, CA 94608 <br /> Attention Owen Ratchye Work Order# 9902E25-12 Reported Mar 25, 1999 <br /> QUALITY CONTROL DATA REPORT <br /> STLC STLC STLC STLC STLC <br /> Analyte Beryllium Cadmium Chromium Nickel Mercury <br /> QC Batch# ME0307992007MDA ME0307992007MDA ME0307992007MDA ME0307992007MDA ME0309992451M4A <br />!! Analy Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 245 1 <br /> Prep Method EPA 200 7 EPA 200 7 EPA 200 7 EPA 200 7 EPA 245 1 <br /> Analyst C Medefesser C Medefesser C Medefesser C Medefesser F Q <br /> MS/MSD#: 990322001 990322001 990322001 990322001 990325901 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 3/7/99 3/7/99 3/7/99 3/7/99 3/9/99 <br /> Analyzed Date 3/8/99 3/8/9-9 3/8/99 3/8/99 3/9/99 <br /> Instrument 1.13# MTJA5 MTJA5 MTJA5 MTJA5 MPE4 <br /> Conc Spiked 1 0 mg/L 10 mg/L 1 0 mg/L 1 0 mg/L 0 0080 mg/L <br /> Result 11 11 11 11 00085 <br /> 0MS % Recovery 110 110 110 110 106 <br /> Dup Result. 11 11 11 11 00086 <br /> MSD % Recov.: 110 110 110 110 108 <br /> RPD: 00 00 00 00 12 <br /> RPD Limit: 0-20 0-20 0-20 0-20 0-20 <br /> 1 <br /> LCS# LCS030799 LCS030799 LCS030799 LCS030799 LCS030999 <br /> Prepared Date 3/7/99 3/7/99 3/7/99 3/7/99 3/9/99 <br /> Analyzed Date 3/8/99 3/8/99 3/8/99 3/8/99 3/9/99 <br /> Instrument I D# MTJA5 MTJA5 MTJA5 MTJA5 MPE4 <br /> Conc Spiked 1 0 mg/L 1 0 mg/L 10 mg/L 10 mg/L 0 0040 mg/L <br /> LCS Result: 12 12 12 12 00042 <br /> LCS % Recov : 120 120 120 120 105 <br /> 80-120 80-120 80-120 80-120 75-125 <br /> LCS 80-120 80-120 80-120 80-120 75-125 <br /> Control Limits <br /> I Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> �EQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> I 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 /> ��a KI <br /> interference,the LCS recovery is to be used to validate the batch <br /> i <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative% Difference 9902E24 CCC 47> <br />