Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue,Suite L Concord,CA 94520 (510) 686 9600 FAX(510)686 9689 <br /> 'Wr Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br />(OMPOS Services Client Project ID Unocal #6015, 601 l= Kettleman, Lodi <br /> 2401 Stanwell Dr, Ste 400 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Avo Avedessian QC Sample Group 4091957-967 Reported Oct 19, 1994 <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 Tuzon A Tuzon A Tuzon A Tuzon <br /> MS/MSD <br /> Batch,# 4091950 4091950 4091950 4091950 <br /> Date Prepared 10/11/94 10/11/94 10/11/94 10/11/94 <br /> Date Analyzed 10/11/94 10/11/94 10/11/94 10/11/94 <br /> Instrument I D # HP-2 HP-2 HP-2 HP-2 <br /> Conc Spiked 20pg/L 20ug/L 2oNg/L 60pg/L <br /> Matrix Spike <br /> % Recovery 105 105 110 110 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery 110 110 110 113 <br /> Relative% <br /> Difference 47 47 00 26 <br /> LCS Batch# 1LCS101194 1LCS101194 ILOS101194 1LCS101194 <br /> Date Prepared 10/11/94 10/11/94 10/11/94 10/11/94 <br /> Date Analyzed 10/11/94 10/11/94 10/11/94 10/11/94 <br /> Instrument I D # HP-2 HP-2 HP-2 HP-2 <br /> LCS % <br /> Recovery 113 110 112 112 <br /> Recovery <br /> Control Limits 71-133 72-128 72-130 71-120 <br /> Please Note <br /> The LCS is a control sample of known,interferent free matrix that 1s 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 /> interference,the LCS recovery 1s to be used to validate the batch <br /> Alan B Kemp <br /> Project Manager <br /> 4091957 MPD <5> <br />