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ID Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N %set 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 /> Iwo <br /> Blaine Tech Services, Inc Client Project ID Chevron 9-2033 /970519-1-12 <br /> 1680 Rogers Avenue Matrix Liquid <br /> San Jose, CA 95112 <br /> Attention Fran Thie Work Order# 9705857-01 Reported Jun 4, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> OC Batch# ME0528976010MDA ME0528976010MDA ME0528976010MDA ME052897601OMDA <br /> Analy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep. Method EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst R Butler R Butler R Butler R Butler <br /> MS/MSD # 9705C0701 970500701 9705CO701 9705CO701 <br /> Sample Cone N D N D 0 030 023 <br /> Prepared Date 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Analyzed Date 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Instrument I D # MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 10 mg/L 1 0 mg/L <br /> Result 098 094 099 12 <br /> •MS %Recovery 98 94 96 97 <br /> Dup Result 10 098 10 12 <br /> MSD % Recov 100 98 97 97 <br /> RPD- 20 42 10 00 <br /> RPD Limit. 0-20 020 0-20 0-20 <br /> LCS #- BLK052897 BLK052897 BLK052a97 BLK052897 <br /> Prepared Date: 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Analyzed Date. 5/28/97 5/28/97 5/28/97 5/28/97 <br /> Instrument I D #. MTJA2 MTJA2 MTJA2 MTJA2 <br /> Cone Spiked 1 0 mg/L 1 0 mg/L 1 0 mg/L 10 mg/L <br /> LCS Result 10 098 099 10 <br /> LCS % Recov 100 98 99 100 <br /> 50-120 8o-120 80-120 80120 <br /> Control Limits <br /> LCS 80-120 80-120 80-120 80-120 <br /> Please Note - <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> O 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 ff <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 /> UegyPenner <br /> Manager **MS=Matrix Spike, MSD-MS Duplicate,RPD=Relative%Difference <br /> 9705857 BLA t2> <br />