Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood Cary CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 404 N Waget Lane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> mill- Analytical 819 Sinker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> MPDS Services Client Project ID Unocal ocal #6981, 4707 Pacific Ave , Stockton <br /> 2401 Stanwell Dr , Ste 300 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Jarrel Crider QC Sample Group 607-1873 Reported Aug 7, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,1-Dichloroethene Trichloroethene Benzene Toluene Chloro- <br /> benzene <br /> Method EPA 8260 EPA 8260 EPA 8260 EPA 8260 EPA 8260 <br /> Analyst S Le S Le S Le S Le S Le <br /> MS/MSD <br /> Batch# 6072134 6072134 6072134 6072134 6072134 <br /> Date Prepared 8/5/96 8/5/96 8/5/96 8/5/96 8/5/96 <br /> Date Analyzed 815196 815196 8!5196 8/5196 815196 <br /> Instrument I D# GC/MS 2 GC/MS 2 GC/MS 2 GC/MS 2 GC/MS 2 <br /> Cork Spiked 50 pg/L 50 lrg/L 50 pglL 50 pg/L 50 pg/L <br /> Matrix Spike <br /> % Recovery 122 104 42 74 112 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 131 111 100 106 120 <br /> Relative % <br /> Difference 70 6 3 70 7 6 6 9 <br /> LCS Batch# LCS080596 LCS080596 LCS080596 LCS080596 LCS080596 <br /> Date Prepared 8/5/96 8/5/96 8/5/96 8/5/96 8/5/96 <br /> Date Analyzed 8/5196 815196 815/96 815/96 815196 <br /> Instrument I D # GC1MS 2 GC/MS 2 GC/MS 2 GC/MS 2 GUMS 2 <br /> LCS % <br /> Recovery 105 100 103 98 110 <br /> Recovery <br /> Control Limits 65-135 60-140 60-140 60-140 60-140 <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, #1271 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 /> Signature on File the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Alan B Kemp interference,the LCS recovery is to be used to validate the batch <br /> Project Manager <br /> 6071873 MPD <6> <br /> Do% <br />