Laserfiche WebLink
q d t+ <br /> Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> Analytical 1900 Bates Avenue Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX (916)921 0100 <br /> OMPDS Services Client Project ID Unocal #5098, 5606 Pacific Ave, Stockton <br /> 2401 Stanwell Dr, Ste 400 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Avo Avedesslan QC Sample Group 4031433-36 Reported Apr 13, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Benzene Toluene Ethyl Xylenes 1,1-Dichloro- Tnchloro- Chloro- <br /> Benzene ethene ethene benzene <br /> Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8010 EPA 8010 EPA 8010 <br /> Analyst J Fontecha J Fontecha J Fontecha J Fontecha K N111 K Ndl K Ndl <br /> MS/MSD <br /> Batch# 4031445 4031445 4031445 4031445 4031436 4031436 4031436 <br /> Date Prepared 4/6/94 4/6/94 4/6/94 4/6/94 4/1/94 4/1/94 4/1/94 <br /> Date Analyzed 4/6/94 4/6/94 4/6/94 4/6/94 4/11/94 4/1/94 4/1/94 <br /> Instrument I D # HP-5 HP-5 HP-5 HP-5 HP5890/1 HP5890/1 HP5890/1 <br /> Conc Spiked 20ftg/L 20yg/L 20pg/L 60yg/L 10frg/L 10ug/L tONg/L <br /> Matrix Spike <br /> % Recovery 140 105 95 105 88 110 99 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 125 100 95 98 89 110 100 <br /> Relative % <br /> Difference 11 49 00 6 9 1 1 00 1 0 <br /> LCS Batch# 3LCSO40694 3LCSO40694 3LCSO40694 3LCSO40694 LCSO40194 LCSO40194 LCSO40194 <br /> Date Prepared 4/6/94 4/6/94 4/6/94 4/6/94 4/1/94 4/1/94 4/1/94 <br /> Date Analyzed 4/6/94 4/6/94 4/6/94 4/6/94 4/1/94 4/1/94 4/1/94 <br /> Instrument I D # HP-5 HP-5 HP-5 HP-5 HP5890/1 HP5890/1 HP5890/1 <br /> LCS % <br /> Recovery 125 108 108 112 96 120 110 <br /> Recovery <br /> Control Limits 71-133 72-128 72-130 71-120 28-167 35-146 38-150 <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 /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> Interference,the LCS recoveryis to be used to validate the batch <br /> an BtmpProjec <br /> 4031433 MPD <6> <br />