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 /> *10"' Analytical 8i9 Striker Avenue Suite B Sacramento CA 95834 (9[6} 921 9600 FAX(916)921 0100 <br /> Gettler Ryan/Geostrategies Client Project ID Unocal #6189 <br /> 6747 Sierra Court, Ste J Matrix Liquid <br /> Dublin, CA 94668 <br /> Attention Greg Gurst Work Order# 9410391 -02 Reported Oct 10, 1994 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte' Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GC100794BTEX02A GC100794BTEX02A GC100794BTEX02A GC100794BTEX02A <br /> Analy Method. EPA 8020 EPA 8020 EPA 8024 EPa 8020 <br /> Prep Method N A N A N A N A <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD #: 941OH95-02B 941 OH95-026 941OH95-02B 941OH95 02B <br /> Sample Conc - N D N D N D N D <br /> Prepared Date N A N A N A N A <br /> Analyzed Date 10/7/94 10/7/94 10/7/94 10/7/94 <br /> Instrument LD #- GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked- 10Erg/L 10Ng/L 10pg/L 30pg/L <br /> Result 98 10 10 30 <br /> MS % Recovery 98 100 100 100 <br /> Dup Result 10 11 11 32 <br /> MSD % Recov 100 110 110 107 <br /> RPD 20 95 95 65 <br /> RPD Limit 0-50 0-50 050 0-50 <br /> LCS# <br /> Prepared Date <br /> Analyzed Date. <br /> Instrument I D # <br /> Conc Spiked <br /> LCS Result <br /> LCS % Recov <br /> LCS <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 is analyzed using the same reagents, <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sarnple <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 /> Tod ve <br /> Project Manager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9410-391 GET t2> <br />