Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood Gary CA 94083 (550) 364 9600 FAX(650) 364-9233 <br /> 404 N Wiget Lane Wtlnut Creek CA 94598 (510)988 9600 FAX(510)988-9673 <br /> a- ) <br /> Analy ica1 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921 0100 <br /> 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792-1865 FAX(707)792-0347 <br /> Gettler Ryan/Geostrategies Client Project ID Unocal 5421, 140162 02 <br /> 6747 Sierra Court, Ste J Matrix Solid <br /> Dublin, CA 94568 <br /> Attention Clyde Galantine Work Order# 9804C43 -01 Reported May 4, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Analyte MTBE <br /> OC Batch#+ MSO42398MTBEEXA <br /> Analy Method EPA 8260 <br /> Prep Method NA <br /> Analyst M Williams <br /> MS/MSD # 9804E2401 <br /> Sample Cone N D <br /> Prepared Date 4/23/98 <br /> Analyzed Date 4/25/98 <br /> Instrument I D # i-{6 <br /> Cone Spiked 2500 Ng/Kg <br /> Result 1800 <br /> MS % Recovery 72 <br /> Dup Result 1800 <br /> MSD % Recov 72 <br /> RPD 00 <br /> RPD Limit 0-25 <br /> LCS # LCSO42398 <br /> Prepared Date 4/23/98 <br /> Analyzed Date 4/28/98 <br /> Instrument I D # F3 <br /> Cone Spiked. 2500 Ng/Kg <br /> LCS Result 2700 <br /> LCS % Recov 108 <br /> 60-140 <br /> LCS 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 /> •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 If <br /> the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br /> 7*r <br /> interference,the LCS recovery is to be used to validate the batch <br /> r gorylect Manager ""MS=Matnx Spike, MSD=MS Duplicate, RPD=Relative°6 Difference 9804C43 GET 4 1 <br />