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Sequoia <br /> 68O sapeake Drive Redwood City,CA 9406 (650)364-9600 FAX(650)364-9233 <br /> +'� t• "` 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-%00 FAX(925)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916)921-9600 FAX(916)921-0100 <br /> frill>� Analytical 1455 McDowell Blvd.North,Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> C :,ATC Associates, Inc. Client Project ID: Van Dyken Prop/N&S Irrigation <br /> 1260 Graphics Drive Matrix: Solid <br /> ,:::Modesto, CA 95351-1502 <br /> Jul 31 1998::::':-.Jeanne H mseyWork Order 9807772-01-04 Reported: <br /> . <br /> .. . . <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Beryllium Cadmium Chromium Nickel <br /> QC Batch#: ME072198601OMDE ME072198601OMDE ME072198601OMDE ME072198601OMDE <br /> Analy. Method: EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> rPrep. Method: EPA 3050 EPA 3050 EPA 3050 EPA 3050 <br /> 4r Analyst: R.Sharma R.Sharma R.Sharma R.Sharma <br /> MS/MSD#: 980772101 980772101 980772101 980772101 <br /> Sample Conc.: N.D. N.D. 46 . 73 <br /> Prepared Date: 7/21/98 7/21/98 7/21/98 7/21/98 <br /> Analyzed Date: 7/21/98 7/21/98 7/21/98 7/21/98 <br /> Instrument I.D.#: MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc. Spiked: 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> Result: 41 41 81 110 <br /> MS%Recovery: 82 82 70 74 <br /> Dup. Result: 41 42 83 110 <br /> MSD%Recov.: 82 84 74 74 <br /> RPD: 0.0 2.4 2.4 0.0 <br /> RPD Limit: 0-20 0-20 0-20 0-20 <br /> .................................................................................................................................................................................................................................................................. <br /> r LCS#: BLK072198 BLK072198 BLK072198 BLK072198 <br /> 1 Prepared Date: 7/21/98 7/21/98 7/21/98 7/21/98 <br /> Analyzed Date: 7/21/98 7/21/98 7/21/98 7/21/98 <br /> Instrument I.D.#: MTJA5 MTJA5 MTJA5 MTJA5 <br /> rConc. Spiked: 50 mg/Kg 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> is <br /> LCS Result: 48 49 48 49 <br /> r LCS % Recov.: 96 98 96 98 <br /> 80-120 80-120 80-120 80-120 <br /> CLCS 80-120 80-120 80-120 80-120 <br /> L 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 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 /> Kayva yai <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9807772.AAA <5> <br />