Laserfiche WebLink
SeQ uoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 4D Sequoia <br /> 404 1 Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> � v <br /> Analytica819 Striker Avenue Suite 8 Sacramento, CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> ID <br /> MPDS Services Client Project ID Unocal #0123, 1034 Central Ave , Tracy <br /> 2401 Stanwell Dr, Ste 300 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Jarrel Crider QC Sample Group 6090769-774 Reported Oct 7, 1996 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,1-Dichloro- Trichloro- Chloro- <br /> ethane ethene benzene <br /> Method EPA 8010 EPA 8010 EPA 8010 <br /> Analyst P Horton P Horton P Horton <br /> MS/MSD <br /> Batch# 6090788 6090788 6090788 <br /> Date Prepared 9125196 9125196 91 196 <br /> Date Analyzed 9125196 9125196 91 196 <br /> Instrument I D # HP-6 HP-6 H -6 <br /> Conc Spiked 10 NgIL 10 NgIL 10 N IL <br /> Matrix Spike <br /> % Recovery 105 85 900 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 111 86 90 <br /> Relative% <br /> Difference 56 00 <br /> LCS Batch# LCS092596 LCS092596 LCS 2596 <br /> Date Prepared 9125196 9125/96 9125196 <br /> Date Analyzed 9125196 9125/9 9125196 <br /> Instrument I D # HP-6 -6 HP-6 <br /> LCS % <br /> Recovery 104 87 94 <br /> % Recovery <br /> Control Limits 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 /> 4'gnature on File 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 /> Alan B Kemp <br /> Project Manager <br /> 6090769 MPD <9� <br />