Laserfiche WebLink
i <br /> Sequoia 680 Chesapeake Dnve Redwood City,CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> - <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> �„ r Analytical 819 Sinker Avenue,Suite 8 Sacramento,CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> 4&PDS Services Client Project ID Tosco #0123, 1034 Central Ave , Tracy <br /> 2401 Stanwell Dr , Ste 300 Matrix Liquid <br /> Concord, CA 94520 <br /> Attention Jarrel Crider QC Sample Group 7060358-361 Reported Jun 20, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE 1,1-Dichloro- Trichloro- Chloro- <br /> ethene ethene benzene <br /> Method EPA 8010 EPA 8010 EPA 8010 <br /> Analyst K Nill K Nill K Nill <br /> MS/MSD <br /> Batch# 7060358 7060358 7060358 <br /> Date Prepared 6117197 6117197 6/17197 <br /> Date Analyzed 6/17/97 6/17/97 6117197 <br /> Instrument I D # HP-7 HP-7 HP-7 <br /> Conc Spiked 10 pg/L 10 pg/L 10 pg/L <br /> Matrix Spike <br /> % Recovery 76 86 85 <br /> wMatrix Spike <br /> Duplicate % <br /> Recovery 77 86 86 <br /> Relative % <br /> Difference 1 3 00 1 2 <br /> LCS Batch# 7LCS061797 7LCS061797 7LCS061797 <br /> Date Prepared 6117/97 6117/97 6/17/97 <br /> Date Analyzed 6117197 6/17197 6/17/97 <br /> Instrument I D # HP-7 HP-7 HP-7 <br /> LCS % <br /> Recovery 90 110 90 <br /> % Recovery <br /> Control Limits 65-135 70-130 70-130 <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 /> 10lgnature 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 /> 7060358 MPD <10> <br />