Laserfiche WebLink
uoia 680 Chesapeake Drive Redwood City CA 94063 (650) 364 9600 FAX(650)364 9233 <br /> Seq 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 815 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br />' E A Engineering Science &Tech Client Project ID Exxon 7-3942, 51539 42 1300 <br /> 3468 Mt Diablo Blvd , Ste B-100 Matrix Liquid <br /> Lafayette, CA 94549 <br /> Attention Chnsta Marting Work Order# 9711733 01-04 Reported Dec 9, 1997 <br />' QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes Gas <br /> Benzene <br /> QC Batch# GC112497BTEX21A GC112497BTEX2iA GC112497STEX21A GC1124978TEX21A GC112497BTEX21A <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 Miraftab A Miraftab A Miraftab A Miraftab <br /> MS/MSD # 971JC1804 9711C1804 9711C1804 971101804 9711C1804 <br /> Sample Conc N D N D N D N D N D <br /> Prepared Date 11/24/97 11/24/97 11/24/97 11/24/97 11/24/97 <br /> Analyzed Date 11/24/97 11/24/97 11/24/97 11/24/97 11/24/97 <br /> Instrument l D # GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc Spiked 10pg/L 10 fug/L 10 fug/L 30 fug/L 60 fug/L <br /> Result 11 11 11 32 58 <br /> MS%Recovery 110 110 110 103 97 <br /> lie Dup Result 11 11 11 32 57 <br /> MSD % Recov 110 110 110 107 95 <br /> RPD 00 00 00 32 17 <br /> RPD Limit 0-25 0-25 0-25 0-25 0-25 <br /> LCS # BLK112497 BLK112497 BLK112497 6LK112497 BLK112497 <br /> Prepared Date 11/24/97 11/24/97 11/24/97 11/24/97 11/24/97 <br /> Analyzed Date 11/24/97 11/24/97 11/24/97 11/24/97 11/24/97 <br /> Instrument 1.0 # GCHP21 GCHP21 GCHP21 GCHP21 GCHP21 <br /> 1 Conc Spiked 10 ftg/L 10 fug/L 10 pg/L 30 pg/L 60 pg/1- <br /> LCS <br /> ig/LLCS Result 10 10 10 30 55 <br /> LCS % Recov 100 100 100 100 92 <br /> 60-140 60-140 60-140 60-140 70-140 <br /> LCS 70130 70-130 70-130 70130 70130 <br /> Control Limits <br /> Please Note <br /> The LCS 1s a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> EQUOIA 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 /> 1 f J the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> X\ interference,the LCS recovery is to be used to validate the batch <br /> Richard He ng <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate,RPD=Relative% Difference 9711732 EEE <3> <br />