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-- - - ------ ---- ------ --- <br /> Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (415) 364-9600 FAX(415) 364-9233 <br /> ID 404 N.Wiget Lane Walnut Creek,CA 94598 (510) 998-9600 FAX(510)988-9673 <br /> Analytical 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921-0100 <br /> ............................... ......................... ............ .. ...... <br /> NI.Canonle Environmental Client Project ID: 94-369, Stock-ton Smith Canal <br /> 1710 Main Stre61- Matrix: Liquid <br /> ,..'Escalon, CA 95320 <br /> :'-Attention: John Lane Work Order# 9503,175-02-4 Reported: Apr 10, 199 :- <br /> . ..................... ....... <br /> ........................ . . ... ... ... ... . ....... 5....: <br /> X I.. <br /> ......... ... . .... ........ <br /> ....... ........ ... ..... . ............ ....... ............. ...... ........................................................... ........ .. .... <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> QC: Batch#: GCO40395BTEX06A GCO40395BTEX06A GCO40395BTEXOBA GCO40395STEX06A <br /> Anally. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5= EPA 5030 EPA 5030 <br /> Analyst: R.Vincent A.Vincent R.Vincent R.Vincent <br /> MS/MSD#: 95031_4602 95031-4602 9503L4602 95031-4602 <br /> Sample Conc.: N.D. N.D. N.D. N.D. <br /> Prepared Date: 4/3/95 4/3/95 4/3/95 4/3/95 <br /> Analyzed Date: 4/3/95 4/3/95 4/3/95 4/3/95 <br /> Instrument I.D.#: GCHP6 GCHP6 GCHP6 GCHP6 <br /> Conc. Spiked: 10 pg/L 10pg/L 10pg/L 30 Mg/L <br /> Result: 7.4 7.4 7.4 22 <br /> MS % Recovery: 74 74 74 73 <br /> Dup. Result: 10 10 10 32 <br /> MSD % Recov.: 100 100 100 107 <br /> RPD: 30 30 30 37 <br /> RPD Limit: 0-50 0-50 0-50 0-50 <br /> ..................................................... ------------------ <br /> .......... <br /> ............. <br /> . . . . . ........ <br /> ........... <br /> .......... <br /> . ....... ...... <br /> .... . .............. ......... <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,interferent4ree 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 sample <br /> fortified with known quantities of specific compounds and subjected to the entire analytical procedure. U <br /> the recovery at analytes from the matrix spike does not fall within specified control limits due to matrix <br /> L-4- interference,the LCS recovery Is to be used to validate the batch. <br /> Vickie Taiqgaue (larkk <br /> Project Manager MS=Matrix Spike, MSD=MS Duplicate, RPD=Relative%Difference 9503J75.CAN <3> <br /> 0� <br />