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680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FM(650)164-9233 <br /> Sequoia 404 N Wiget lane Walnut Creek,CA 94598 (9z5)968-9600 TAX(925)988-9673 <br /> ,!D— 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-oloo <br /> qwr Analytical 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Cambria Environmental Tech Client Protect ID Shelf 420 W Kettleman Lane <br /> 114465th St, Ste C Matrix Solid <br /> Oakland, CA 94608 <br /> Attention Aubrey Coal Work Order# 9811146 -01-49 Reported Nov 18, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Beryllium Cadmium Chromium Nickel <br /> QC BatCh# ME1105986010MDE ME110598601OMDE ME1105986010MDE ME1105986010MOE <br /> Anaiy Method EPA 6010 EPA 6010 EPA 6010 EPA 6010 <br /> Prep Method. EPA 3050 EPA 3050 EPA 3050 EPA 3050 <br /> Analyst R Sharma R Sharma R Sharma R Sharma <br /> MS/MSD # 981108901 981108901 981108901 981108901 <br /> Sample Conc. N D N D 15 26 <br /> Prepared Date 11/5/x8 11/5/98 41/5/98 11/5/98 <br /> Analyzed Date 11/5/98 11/5/98 11/5/98 11/5/98 <br /> !^v`. ument I D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 50 mg/Kg 50 mg/K9 50 mg/Kg 50 mg/Kg <br /> Result 40 42 59 58 <br /> MS% Recovery 80 84 Be 64 <br /> Dup Result 42 44 60 60 <br /> MSD % Recav 84 88 90 58 <br /> RPD 49 47 17 34 <br /> RPD Limit 0-20 0-20 0-20 0-20 <br /> LCS # LCS 110598 LCS110599 LCS110598 LC8110598 <br /> Prepared Date 11/5/98 11/5/98 11/5/98 11/5/98 <br /> Analyzed Date 11/5/98 11/5/98 11/5/98 11/5/98 <br /> Instrument i D # MTJA5 MTJA5 MTJA5 MTJA5 <br /> Conc Spiked 50 mg/K9 50 mg/Kg 50 mg/Kg 50 mg/Kg <br /> LCS Result 51 52 53 53 <br /> LCS % Recov 102 104 104 106 <br /> MS/fLqsu80-120 80-120 80-120 80-120 <br /> LCS 80-120 80-120 80120 80-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a contra[sample of known,interferent-tree matrix that is analyzed using the same reagents <br /> SEQUO LYTICAL preparation, and analytical methods employed for the samples The rmavix spike is an aliquot of sampi <br /> y fortified wrth known quantities of specific compounds and subjected to the entire analytical procedure If <br /> the reoovery of analytes from the matrix spoke does not fall within specified control limits due to matrix <br /> interference,the LCS recovery is to be used to validate the batch <br /> ginner <br /> `'Project Manager **MS=Matrix Spoke,MSD=MS Duplicate,RPD=Retatrve %Difference 9811146 CCC <1> <br />