Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> ► 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510) 988 9673 <br /> q1W Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> IPDS Services Client Project 1D Unocal #0187, 437 E Miner Ave Stockton <br /> 2401 Stanwell Dr , Ste 300 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Jarrel Crider QC Sample Group 6110523-533 Reported Nov 26, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst A Kemp A Kemp A Kemp A Kemp <br /> MS/MSD <br /> Batch# 6110527 6110527 6110527 6110527 <br /> Date Prepared 11/19/96 11/19/96 11/19/96 11/19/96 <br /> Date Analyzed 11/19/96 11/19/96 11/19/96 11/19/96 <br /> Instrument I D # HP-5 HP 5 HP-5 HP 5 <br /> Conc Spiked 20ug/L 20yg/L 20ug/L 60ug/L <br /> Matrix Spike <br /> % Recovery 95 90 90 92 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 95 90 90 92 <br /> Relative % <br /> Difference 00 00 00 00 <br /> LCS Batch# 5LCS111996 5LCS111996 5LCS111996 5LCS111996 <br /> Date Prepared 11/19/96 11/19/96 11/19/96 11/19/96 <br /> Date Analyzed 11/19/96 11/19/9B 11/19/96 11/19/96 <br /> Instrument I D # HP-5 HP-5 HP 5 HP-5 <br /> LCS % <br /> Recovery 90 85 85 87 <br /> % ecovery <br /> Control Limits 50 140 60-140 60-140 60-140 <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, #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 /> Oignature on File the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Alan B Kemp nterference,the LCS recovery is to be used to validate the batch <br /> Project Manager <br /> 6110523 MPD <3> <br />