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rSequoia 680 Chesapeake Drive Redwood Ciry CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520510 <br /> ( ) 686 9600 FAX(510)686 9689 <br /> Analytical 819 Stnker Avenue Suitc 8 Sacramento CA 95834 (916) 921 9600 FAX(9t6)921 0100 <br /> Canonie Environmental Client Project 1D 94-273, Quik Stop 132 <br /> 7901 Stoneridge Drrve, Suite 100 Matrix Liquid <br /> Pleasanton, CA 94588 <br /> Attention Rich Garlow Work Order# 9502G45 -01 Reported Mar 10, 1995 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte Benzene Toluene Ethyl Xylenes <br /> I Benzene <br /> QC Batch#: GC030195BTEX03A GCO30195BTEX03A GCO30195BTEX03A GCO30195BTEX03A <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 Minkel J Minkel J Minkel J Minkel <br /> MS/MSD#. 9502/36104 9502D6104 9502/36104 950206104 <br /> Sample Cone.: N D N D N D N D <br /> Prepared Date 3/1/95 3/1/95 3/1/95 3/1/95 <br /> Analyzed Date 3/1/95 3/1/95 3/1/95 3/1/95 <br /> Instrument I.D.#- GCHP3 GCHP3 GCHP3 GCHP3 <br /> Conc. Spiked: 10 ug/L 10 ug/L 10 ug/L 30 us/L <br /> Result 94 95 95 29 <br /> MS % Recovery 94 95 95 97 <br /> Dup. Result- 96 96 97 29 <br /> MSD %Recov.. 96 96 97 97 <br /> RPD 21 10 21 00 <br /> RPD Limit 0-50 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 /> 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 is analyzed using the same reagents, <br /> SEQUOIA AL CAL 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 /> Vicki Clark <br /> Project Manager **MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9502G45 CAN <1> <br />