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•i' '� Sequoia 680 Chesapeake Dnve 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 Smker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 01i u <br /> Smith - Canonie Environmental Client Project ID 94-367-10, Stockton Fire#2 <br /> 1710 Main Street Matrix Liquid <br /> Escalon, CA 95320 <br /> Attention John Lane Work Order # 95051-33-02-5 Reported Jun 23, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC Batch# GCO606956TEX02A GCO60695BTEX02A GC0606958TEX02A GC060695BTEX02A <br /> Analy Method EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Pree Method EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst J Minkel J Minkel J Minkel J Minkel <br /> MS/MSD # 950603102 950603102 950603102 950603102 <br /> Sample Conc. N D N D N D N D <br /> Prepared Date 6/6/95 6/6/95 6/6/95 6/6/95 <br /> Analyzed Date 6/6/95 6/6/95 6/6/95 6/6/95 <br /> Instrument I D # GCHP2 GCHP2 GCHP2 GCHP2 <br /> Conc Spiked 10 erg/L 10 yg/L 10 pg/L 30 pg/L <br /> Result 95 95 95 29 <br /> MS % Recovery 95 95 95 97 <br /> Dup Result 10 10 10 30 <br /> MSD % Recov 100 100 100 100 <br /> RPD 51 51 51 34 <br /> RPD Limit 0-50 0-50 0-50 050 <br /> LCS # <br /> Prepared Date - <br /> Analyzed Date <br /> Instrument I D #: - <br /> Conc Spiked - - <br /> LCS Result - - <br /> LCS % Recov - - <br /> MS/MSD <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 1s analyzed using the same reagents <br /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples The matrix spike is an aliquot of sample <br /> R1, <br /> Jfortified 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 /> Vickie Tague Clark <br /> Project Manager **MS=Matrix Spike MSD=MS Duplicate, RPD=Relative% Di ference 95051-33 CAN <3> <br /> 21 <br />