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Sequoia <br /> 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 /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> i <br /> Blaine Tedi Selrvices, Inc Client Project ID 941114-L1, dhevron 5221-5 ry <br /> `}985 Timothy Drive Matra Liquid <br /> -'San Jose, CA 95133 <br /> vAttention Jim Keller Work Order# 9411 C48 -01 -04 Reported Nov 28, 1994 ' <br /> ,n ryn •{{ • r ` ,n n v.. rr} ..s. nc..e no m t n r ;4,.,w.,. v ' } r vry 1 >. n. n r ... .. v r ry r .. <br /> QUALITY CONTROL DATA REPORT <br /> Analyte- Benzene Toluene Ethyl xylenes <br /> Benzene <br /> OC Batch#, GC11219413TEX20A GC112194BTEX20A GC112194BTEX20A GC112194BTEX20A <br /> Analy. Method EPA 8020 EPA 8020 EPA 8020 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#' 9411904-01 9411904-01 9411904-01 9411904-01 <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- 11/21/94 11/21/94 11/21/94 11/21/94 <br /> Instrument I.D#. GCHP20 GCHP20 GCHP20 GCHP20 <br /> Conc. Spiked 10 ug/L 10 ug/L 10 ug/L 30 ug/L <br /> Result 98 98 98 30 <br /> MS %Recovery, 98 98 98 100 <br /> Dup. Result 10 10 10 30 <br /> MSD%Recov 100 100 100 100 <br /> RPD. 20 20 20 00 <br /> RPD Limit 0-5a 0-50 0-50 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 71-133 72-128 72-130 71-120 <br /> Control Limits <br /> Please Note <br /> The LCS is a control sample of known,interferent-free matrix that is analyzed using the same reagents, <br /> SEANALYTICAL 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 /> za ne Chln <br /> Project Manager "*MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9411048 BLA <1> <br />