Laserfiche WebLink
S� uoa 680 Chesapeake Dnve Redwood Cory CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> alAnalytical <br /> q 404 N Wiget Cane Walnut Creek CA 94598 (510) 988 9600 FAX (510)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 96W FAX (916) 921 0100 <br /> E A Engineering Science &Tech Client Project 1D Exxon 7-3942, 51539 42 1300 <br /> 3468 Mt Diablo Blvd , Ste B-100 Matrix Liquid <br /> Lafayette, CA 94549 <br /> Attention Chrlsta Marting Work Order# 9711732 01, 02, 06-14 Reported Dec 9, 1997 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> OC Batch# G01122978TEX21A GC112297STEX21A GC112297BTEX21A GC112297BTEX21A GC112297BTEX21A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 EPA 8015M <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br />' Analyst A Miraftab A Mlraftab A.Miraftab A Miraftab A Miraftab <br /> MS/MSD # 971150104 971150104 971150104 971150104 971150104 <br /> Sample Conc N D N D N a N D N D <br /> Prepared Date 11/22/97 11/22/97 11/22/97 11/22/97 11/22/97 <br /> Analyzed Date 11/22/97 11/22/97 11/22/97 11/22/97 11/22/97 <br /> Instrument I D # GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc Spiked 10frg/1- 1()pg/L 10yg/L 30yg/L 60ftg/L <br /> Result 11 11 11 32 57 <br /> MS % Recovery 110 110 110 107 95 <br />`• Dup Result 11 11 11 32 56 <br /> MSD % Recov 110 110 110 107 93 <br /> RPD 00 00 00 00 38 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS# BLK112297 BLK112297 BLK112297 BLK112297 BLK112297 <br /> Prepared Date 11/22/97 11/22/97 11/22/97 11/22/97 11/22/97 <br /> Analyzed Date 11/22/97 11/22/97 11/22/97 11/22/97 11/22/97 <br /> Instrument I D # GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc Spiked 10 pg/L 10,ug/L 10,ug/L 30 pg/1- 60 Pg/L <br /> LCS Result 10 10 11 31 55 <br /> LCS % Recov 100 100 110 103 92 <br /> 60-140 60-140 60-140 60-140 60-140 <br /> LCS 70-130 70-130 70-130 70-130 70-130 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that 1s analyzed using the same reagents, <br /> eEQ1U0IA ANALYTICAL 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 recovery is to be used to validate the batch <br /> Richard Herli <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate RPD=Relative% Difference 9711732 EEE <1> <br />