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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364 9600 FAX(415)364 9233 <br /> 404 N Wiget Lane Walnut Creek CA 94598 (510) 988 9600 FAX(510)988 9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento CA 95834 (916) 921 9600 FAX{916)921 0100 <br /> w��'nr�'a%%Y^;�n'S'��52'�Y'2f£Y:��'r•":Y` .,,r to s.j`�ti v .rte N .., �,5 r ..r ^.2 ']"" .vn:.,.^•y> � }„^v�3s:E��;:Y, .. <br /> Blaine Tech Services, Inc w ...r Client Project ID Chevron 9-1918 /960730-1-12 Y <br /> 985 Timothy Drive Matrix Liquid <br /> ISan Jose,CA 95133 4 <br /> kAttention Jim Keller Work Order# 9608106 -01-02, 04-09, 11-15 Reported Aug 15 1996` <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch#. GC080896BTEX07A GC080896BTEX07A GCO80896BTEX07A GC080896BTDC07A <br /> Analy. Method; EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst, J Heider J Heider J Heider J Helder <br /> MS/MSD#. 9607H0503 9607HO503 96071-10503 9607HO503 <br /> Sample Cone. N D N D N D N D <br /> Prepared Date 8/8/96 8/8/96 8/8/96 8/8/96 <br /> Analyzed Date. 8/8/96 8/8/96 8/8/96 8/8/96 <br /> Instrument LD# GCHP7 GCHP7 GCHP7 GCHP7 <br /> Cone.Spiked 10pg/L 10pg/L 10pg/L 30pg/L <br /> Result. 91 91 92 28 <br /> MS%Recovery. 91 91 92 93 <br /> Dup. Result 90 90 91 27 <br /> MSD % Recov 90 90 91 90 <br /> RPD 11 11 11 36 <br /> RPD Limit 0.25 0.25 0-25 0-25 <br />� �,����4•,N.v rrrt 3 i�. C`^ F'^£�, ,' L`?,- , ., n .w ,v r ,t '� ^, <br /> LCS# BLK080896 BLKD80896 BLK080896 1 BLK0808�96 <br /> Prepared Date 8/8/96 8/8/96 8/8/96 8/s/% <br /> Analyzed Date 8/8/96 8/8/96 8/8/96 _ 8/8/96 <br /> Instrument LD # GCHP7 GCHP7 GCHP7 GCHP7 <br /> Cone Spiked to yg/L 10pg/L 10 pg/L 30 Ng/L <br /> LCS Result* 86 86 87 26 <br /> LCS%Recov.• 86 86 87 87 <br /> 60-140 60-140 60.140 60-140 <br /> I-CS 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 is analyzed using the same reagents, <br /> VSEQUOIA L 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 analytioal procedure R <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 /> r <br /> Project Ma ager **MS=Matrix Spike,MSD=MS Duplicate,RPD=Relative%Difference 9608106 BLA <I> <br />