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Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (Sto) 988 9600 FAX(510)988.9673 <br /> Analytical Sig Stnker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(9l6)921-010o <br /> ,.' ..J <br /> "Client <br /> Canonie EnvironmentiC Client Project- ID 94-367, Stockton Fire#2 <br /> 7901 Stoneridge Drnre, Suite 100 Matra Liquid <br /> Pleasanton, CA 94588 <br /> Attention John Lane Work Order# 9503,154-01-2, 5 Reported Apr 19, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte. Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#• GC033095BTEX06A GC033095BTEX136A GCO33095STDMA GC033095BTEX06A <br /> Analy Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: T Granicher T Granicher T Granicher T Granicher <br /> MS/MSD#. 950311604 950311604 950311604 950311604 <br /> Sample Cone.: N D N D N D N D <br /> Prepared Date: 3/30/95 3/30/95 3/30/95 3/30/95 <br /> Analyzed Date: 3/30/95 3/30/95 3/30/95 3/30/95 <br /> Instrument I D.#. GCHP6 GCHP6 GCHP6 GCHP6 <br /> Cone. Spiked: 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result: 10 10 10 30 <br /> MS % Recovery: 100 100 100 100 <br /> Dup Result: 88 88 90 26 <br /> MSD %Recov.: 88 88 90 87 <br /> RPD: 13 13 11 14 <br /> RPD Limit: 0-50 0-50 0.50 0-50 <br /> LCS#: - - - - <br /> Prepared Date: - - - - <br /> Analyzed Date: - - - - <br /> Instrument I.D.#: - - - <br /> Conc.Spiked: - - - - <br /> LCS Result: - - - - <br /> LCS % Recov.: - - - - <br /> LCS 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Nate <br /> The LCS is a control sample of known,interferent-fres 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 /> 1 interference,the LCS recovery is to be used to validate the batch <br /> Vickie Tague Clark <br /> Project Manager **MS-Matrix Spike,MSD-MS Duplicate,RPD-Relative%Difference 9503J54 CAN <3> <br />