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<br /> j SEQUOIA ANALYTICAL
<br /> 680 Chesapeake Drive - Redwood City,CA 94063
<br /> (415) 364-9600 FAX(415) 364-9233
<br />'
<br /> Y RESfdA tient Prosect ID Y 054006 02, Coca-Cola Stockton �k
<br /> 31710 Main Street Matra Water
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<br /> }Escalon, CA 95320
<br /> t }Attention Jeanne Hornsey V OC Sample Group 3LD9W1-3 Au+ Reported- Jan 11, 1994~'
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE Benzene Toluene Ethyl Xylenes Diesel
<br />' Benzene
<br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 5015
<br /> Analyst; M Nipp M Nipp M Nipp M Nipp D Tran
<br /> MS/MSD
<br /> Batch# 3LE7203 3LE7203 3LE7203 3LE7203 3LE7203
<br /> Date Prepared: - - - - 1/3/94
<br /> Date Analyzed: 1/4/94 1/4/94 1/4/94 1/4/94 1/4/94
<br /> Instrument I.D.#. GCHP-2 GCHP-2 GCHP-2 GCHP-2 GCHP-5
<br /> Conc. Spiked: 10P9/L 10pg/L 10fig/L 30Ng/L 600Ng/L
<br /> Matrix Spike
<br /> % Recovery: 97 97 97 97 62
<br /> Matrix Spike
<br /> Duplicate%
<br /> Recovery 98 98 99 100 60
<br /> Relative%
<br /> Difference 10 10 20 30 33
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<br /> LCS Batch#: - - -
<br /> Date Prepared; - - - - -
<br /> Date Analyzed:
<br /> Instrument I.D.#: - - - -
<br /> ' LCS % -
<br /> Recovery: - - - -
<br /> % Recovery
<br /> ' Control Limits. 71-133 72-128 72-130 71-120 28-122
<br /> Please Note
<br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents,
<br /> EOUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matnx spike is an aliquot of sample
<br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure tf
<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 Tag
<br /> Project Manager 3LD9801 WAT �3>
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