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Sequoia680 Chesapeake Dave Redwood Cry,CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> e //�� 404 N %get Lane Walnut Creek,CA 94598 (510) 988-9600 FAX(510)988-9673 <br /> Ell <br /> t <br /> 1'�nalyt ica1 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921-9600 FAX(916)921-0100 <br /> Ell 3-5 <br /> {J <br /> Cambria Environmental Tech Client Project'ID Shell-1071'N Main, Manteca <br /> 114465th St, Ste C Matrac Solid <br /> Oakland, CA 94608 <br /> Attention Josh Bergstrom Work Order# 9709770 05 A wry v N Reported Sep 26, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Beryllium Cadmium Chromium Nickel <br /> OC Batch#: ME0917976010MDE ME091797601OMDE ME0917976010MDE ME091797601OMDE <br /> Analy Method: EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method: EPA 3050 EPA 3050 EPA 3050 EPA 3050 <br /> Analyst: R Butler R.Butler R Butler R. Butler <br /> MS/MSD#. 970961901 970961901 970961901 970961901 <br /> Sample Cone ' N D N D 21 17 <br /> Prepared Date 9/17/97 9/17/97 9/17/97 9/17/97 <br /> Analyzed Date 9/17/97 9/17/97 9/17/97 9/17/97 <br /> Instrument l.D.# MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked. 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> Result. 42 43 65 59 <br /> MS %Recovery. 84 86 88 84 <br /> Dup. Result: 43 44 65 64 <br /> MSD % Recov.: 86 88 88 94 <br /> RPD: 24 23 00 81 <br /> RPD Limit` 0-20 0-20 0-20 0-20 <br /> LCS# BLK091797 BLK091797 BLK091797 BLK091797 <br /> Prepared Date- 9/17/97 9/17/97 9/17/97 9/17/97 <br /> Analyzed Date: 9/17/97 9/17/97 9/17/97 9/17/97 <br /> Instrument I.D #: MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked: 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> LCS Result 53 52 55 54 <br /> LCS % Recov. 110 100 110 110 <br /> 80-120 8G-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 /> SEQUOIA ANAL CAI�� 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 /> Richard Herling interference,the LCS recovery is to be used to validate the batch <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative%Difference 9749770 CCC <4> <br />