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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX (415) 364.9233
<br /> 1900 Hates Avenue Suite L Concord,CA 94520 (510) 686-9600 FAX (510) 686-9689
<br /> I� Analytical 819 Stnker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916) 921.0100
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<br /> AMittelhauser Corporation Client Project ID 2168 01-001, Unocal/Tracy
<br /> 7901 Stonendge Drive, Suite 123 Matrix Liquid
<br /> ' Pleasanton, CA 94588
<br /> 'Attention R Marks/R Papier _Work Order# 9502243-09 Reported Feb 9, 1995
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<br /> QUALITY CONTROL DATA REPORT
<br /> Analyte: 1,2,4-Trichioro 4-Chioro-3 Acenaphthene 4-Natrophenol
<br /> benzene Methylphenol
<br /> OC Batch#: MS0202958VOEXA MS0202958270EXA MS0202958270EXA MS0202958270EXA
<br /> Analy. Method: EPA 8270 EPA 8270 EPA 8270 EPA 8270
<br /> ' Prep Method: EPA 3510 EPA 3510 EPA 3510 EPA 3510
<br /> Analyst: L Duong L Duong L.Duong L Duong
<br /> MS/MSD #: 950112003 9501120033 950112003 9501M003
<br /> ' Sample Conc.: N D N D N D N D
<br /> Prepared Date: 2/2/95 2/2/95 2/2/95 2/2/95
<br /> Analyzed Date: 2/2/95 2/2/95 2/2/95 2/2/195
<br /> Instrument 1.D.#' l=4 F4 F4 F4
<br /> ' Conc. Spiked: 200 jig/L 200 stg/L 20o ug/L 200 u9/L
<br /> Result: 140 100 120 14
<br /> MS %Recovery: 70 5o 60 70
<br /> Dup Result: 130 97 120 13
<br /> MSD % Recov.: 65 49 so 70
<br /> RPD* 74 30 ao 74
<br /> RPD Limit: 0-50 0-50 0.50 0.50
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<br /> LCS #: BLK020295 BLK020295 SLK020295 BLK020295
<br /> Prepared Date: 2/2/95 2/2/95 2/2/95 2/2/95
<br /> Analyzed Date: 2/3/95 2/3/95 2/3/95 2/3/95
<br /> ' Instrument 1 D.#: Hs F4 F4 F4
<br /> Conc Spiked: 2Wlig/L 200ug/L mug/L 2Wpg/L
<br /> LCS Result: 152 175 166 51
<br /> LCS % Recov.. 76 Bs 83 25
<br /> ' MS/MSD
<br /> LCS 44-142 22-147 47-145 DL-132
<br /> Control Limits
<br /> Please Note
<br /> The LCS 1s a control sample of known,Interferent-free matrix that is analyzed using the same reagents,
<br /> SEQUOIA ANALYTICAL preparation,and analytical methods employers for the samples. The matrix spike is an aliquot of sample
<br /> A fortified with known quantities of specific compounds and subjected to the entire analytical procedure N
<br /> the recovery of analytes from the matrix spike does not fail within specified control limits due to matrix
<br /> interference,the LCS recovery Is to be used to validate the batch
<br /> Vickie Tague Clark MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference
<br /> Project Manager Page 2 of 3 9502243 MMM 12>
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