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Sequoia 680 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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)9ZI-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707) 79Z-1865 FAX(707)792-0342 <br /> settler Ryan/Geostrategles Client Project ID Former Unocal SS #2859 <br /> 6747 Sierra Court, Ste J Matrix Liquid <br /> ;Dublin, CA 94568 <br /> -Attention Deanna Harding Work Order# 9806C89 01-06 Reported Jul 23, 1998 ` T <br /> 9806C90 07-10 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Beryllium Cadmium Chromium Nickel <br /> OC Batch# ME0619986010MD8 ME061998601OMDB ME0619986010MOB ME061998601OMDB <br /> Analy Method: EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method- EPA 3010 EPA 3010 EPA 3010 EPA 3010 <br /> Analyst C Caoile C Caotle C Caoile C Caoile <br /> MS/MSD#: 9806C2201 9806C2201 9806C2201 9806C2201 <br /> Sample Cone. N D N D N D N D <br /> Prepared Date- 6/19/98 6/19/98 6/19/98 6/19/98 <br /> Analyzed Date: 6/19/98 6/19/98 6/19/98 6/19/98 <br /> Instrument I.D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Cone. Spiked: 10 mg/L 1 0 mg/L 1 0 mg/L 10 mg/L <br /> Result 094 094 093 093 <br /> MS % Recovery 94 94 93 93 <br /> Dup Result 093 092 092 092 <br /> MSD % Recov .. 93 92 92 92 <br /> RPD- 11 22 11 11 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS #: BLK061998 BLK061M BLK061998 BLK061998 <br /> Prepared Date 6/19/98 6/19/98 6/19/98 6/19/98 <br /> Analyzed Date: 6/19/98 6/19/98 6/19/98 6/19/98 <br /> Instrument LD #- MTJA5 MTJA5 MTJA5 MTJAS <br /> Cone Spiked 10 mg/L 1 0 mg/L 1 0 mg/L 1 0 mg/L <br /> LCS Result: 1 1 1 1 1 1 1 1 <br /> LCS % Recov.. 110 110 110 110 <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 /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> fortified with known quantifies 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 98mC89 GET <5> <br />