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Sequoia �-.tSO Chesapeake Drive Redwood City, 3N.0( <br /> CA 9406415) 364-9600 FAX(415) 364-9233 <br /> ,—! —D404 N.Wigel Lane Walnut Creek,CA 94598 (510) 988.9600 FAX(510)988-9673 <br /> Analytical <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834 (916) 921.9600 FAX(916)921.0100 <br /> Client . . . <br /> -Blaine Tech Services, Inc. C �rojiactib-' Chevron 9-1918/970310-Ji <br /> 1680 Rogers Avenue Matrix: Liquid <br /> San Jose, CA 95112 <br /> 4Attention: Fran Thie Work Order#: 9703494 -01 Reported: Mar 17, 19970' <br /> .............. <br /> ffffff <br /> QUALITY CONTROL DATA REPORT <br /> Analyte: Benzene Toluene Ethyl Xylenes <br /> Benzene <br /> OC Batch#: GC031297BTEX18A GC031297BTE)(18A GCO31297BTEXISA GCO31297BTEX18A <br /> Analy. Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Prep. Method: EPA 5030 EPA 5030 EPA 5030 EPA 5030 <br /> Analyst: R.Geckler R.Geckler R.Geckler R.Geckler <br /> MS/MSD#: 970336401 970336401 970336401 970336401 <br /> Sample Cone.; N.D. N.D. N.D. N.D. <br /> Prepared Date: 3/11/97 3/11/97 3/11/97 3/11/97 <br /> Analyzed Date: 3/11/97 3/11/97 3/11/97 3/11/97 <br /> Instrument I.D.#: GCHP18 GCHP18 GCHP18 GCHP18 <br /> Cone. Spiked: 10lig/L 10jig/L 10pg/L 30 pg/L <br /> Result: 8.6 8.7 8.7 26 <br /> MS%Recovery: 86 87 87 87 <br /> t*ftv,' Dup. Result: 8.8 8.9 8.9 26 <br /> MSD %Recov.: 88 89 89 87 <br /> RPD: 2.3 2.3 2.3 0.0 <br /> RPD Limit: 0-25 0-25 0-25 0-25 <br /> XS %X.:s .:s-:o.:s.:s .:s.:s s s.x xS :s s X� .......... ............. <br /> ................................. .......... ............ <br /> ............ <br /> ............... <br /> .......................... ............................. X".�N N X�XNN N XS:X:' X��:s X".X'. X'.� ..... <br /> ............... <br /> LCS#: BLK031197 BLK031197 BLK031197 BLK031197 <br /> Prepared Date: 3/11/97 3/11/97 3/11/97 3/11/97 <br /> Analyzed Date: 3/11/97 3/11/97 3/11/97 3/11/97 <br /> Instrument I.D.#: GCHP18 GCHP18 GCHP18 GCHP18 <br /> Cone. Spiked: 10pg/L 10lig/L 10pg/L 30 pg/L <br /> LCS Result: 9.2 9.3 9.3 27 <br /> LCS%Recov.: 92 93 93 90 <br /> MS/MSD 60-140 60-140 60-140 60-140 <br /> LCS 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 /> S 01 A ALYTICAL 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 /> L�T <br /> Pe g I nner <br /> Manager <br /> ej 9703494.BLA <1> <br /> r ec Manager MS=Matrix Matrix Spike,MSD=MS MS Duplicate,RPD=Relative%Difference <br />