Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 444 N ""t lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> �IPDS Services Client Project ID Unocal #5098, 5606 Pacific Ave, Stockton <br /> 2401 Stanwell Dr, Ste 300 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Jarrel Crider OC Sample Group 6091455-465 Reported Oct 11, 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 K Nill K Nil] K Nill K Nill <br /> MS/MSD <br /> Batch# 6091458 6091458 6091458 6091458 <br /> Date Prepared 10/1/96 10/1/96 10/1/96 10/1/96 <br /> Date Analyzed 10/1/96 10/1/96 10/1/96 10/1/96 <br /> Instrument 1 D # HP 2 HP-2 HP-2 HP-2 <br /> Cone Spiked 20 fig/L 20 fig/L 20 fig/L 60 jig/L <br /> Matrix Spike <br /> % Recovery 115 110 115 117 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery 110 110 110 112 <br /> Relative % <br /> Difference 44 00 44 4 4 <br /> LCS Batch# 2LCS100196 2LCS100196 2LCS100196 2LCS100196 <br /> Date Prepared 10/1/96 10/1/96 10/1/96 10/1/96 <br /> Date Analyzed 10/1/96 10/1/96 10/1/96 10/1/96 <br /> Instrument I D # HP 2 HP-2 HP-2 HP-2 <br /> LCS % <br /> Recovery 100 105 110 112 <br /> Recovery <br /> Control Limits 60-140 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 /> is nature 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 /> 6091455 MPD <6> <br />