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Sequoia 680 Chesapeake Dtrve Redwood Ctty CA 94063 (415) 364 9600 FAX (415) 364 9233 <br /> 4D_ 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916) 921 0100 <br /> Client Protect ID 150081 01 Gardner Property { <br /> 1710 Main Street Matrix LIQUID <br /> Escalon, CA 95320 <br /> Attention Tom Lutterman <br /> n ry h Work Order# 9412G80 -01 Reported Jan 10, 1995 ry <br /> QUALITY CONTROL DATA REPORT <br /> E <br /> alyte- Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> ch#: GCO10395BTEX03A GC010395BTEX03A GC010395BTEX03A GCO10395BTEX03A <br /> hod: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> hod- N/A N/A N/A N/A <br /> Analyst- J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD# 9412F0006 9412F0006 9412F0006 9412F0006 <br /> Sample Cone - ND ND NO ND <br /> Prepared Date. N/A N/A N/A N/A <br /> Analyzed Date 1/3/95 1/3/95 1/3/95 1/3/95 <br /> Instrument i D # GCHP3 GCHP3 GCHP3 GCHP3 <br /> Cone. Spiked- 10ug/L 10ug/L 10ug/L 30ug/L <br /> Result. 10 10 10 30 <br /> MS ifs Recovery. 100 100 100 100 <br />. Dup Result- 10 10 10 31 <br /> MSD %Recov - 100 100 100 103 <br /> RPD' 00 00 00 33 <br /> RPD Limit- 0-50 0-500 0-50 0-50 <br /> LCS # <br /> Prepared Date: <br /> Analyzed Date. <br /> Instrument I.D.#• ' <br /> Cone. Spiked. <br /> LCS Result- <br /> LCS% Recov: _ <br /> LCS 71-133 72-128 72-130 71-120 <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 quantities of specific compounds and subjected to the entire analytical procedure H <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 /> Vickie Tague Clark <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference <br /> 94 i 2Gfi0 WAT <1> <br />