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(' Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364.9600 FAX(41 S)364-9233
<br /> 1900 Batts 00 Avenue,Suite L Concord,CA 94520 (510) 686.96FAX(510)686-9689
<br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100
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<br /> QUALITY CONTROL DATA REPORT
<br /> ANALYTE Total Recoverable
<br /> Petroleum Hyd.
<br /> Method: SM 5520 EF
<br /> Analyst: A.Pina
<br /> MS/MSD
<br /> Batch* 940905427
<br /> Date Prepared: 9/6/94
<br /> Date Analyzed: 9/8/94
<br /> Instrument l.D.#: -
<br /> Conc. Spiked: 1000 mg/kg
<br /> Matrix Spike
<br /> %Recovery: 110
<br /> Matrix Spike
<br /> Duplicate%
<br /> Recovery: 110
<br /> Relative%
<br /> Difference: 0.0
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<br /> LCS Batch#:
<br /> Date Prepared:
<br /> Date Analyzed:
<br /> Instrument l.D.#:
<br /> LCS%
<br /> Recovery:
<br /> % Recovery
<br /> Control Limits: 70-110
<br /> Please Note:
<br /> The LCS is a control sample of known,interferent free matrix that is analyzed using the same reagents,
<br /> OU •lA 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. k
<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 /> Heen A. Manning
<br /> Project Manager 9409054•PPP <2>
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