Laserfiche WebLink
FLl <br /> • <br /> (D— <br /> 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364 9233 <br /> Sequoia 404 N Wiget Lane Watnut Creek CA 94598 (925)988 9600 FAX(925)988 9673 <br /> 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921 9600 FAX(916)921 0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma CA 94954 (707)792 1865 FAX(707)79Z-034Z <br /> Gettler Ryan/Geostrategies Client Project ID Tosco 6981, 4707 Pacific Ave <br /> 3164 Gold Camp Drive, #240 <br /> Rancho Cordova, CA 95670 <br /> Attention Steve Carter QC Sample Group 9810112 Reported Oct 7, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Liquid <br /> Method EPA 8020 <br /> Analyst AM <br /> ANALYTE Benzene Toluene Ethylbenzene Xylenes <br /> QC Batch # GC100398BTEX03A <br /> Sample No GW9810136 10 <br /> Date Prepared 1013198 1013198 1013198 1013198 <br /> Date Analyzed 1013198 10!3198 1013198 1013198 <br /> Instrument I D # GCHP03 GCHP03 GCHP03 GCHP03 <br /> Sample Cone ug/L N D N D N D N D <br /> Cone Spiked ug/L 10 10 10 30 <br /> I <br /> Matrix Spike, ug/L 9 1 9 6 9 6 31 <br /> % Recovery 91 96 96 103 <br /> Matrix j <br /> Spike Duplicate, ug/L 9 5 9 4 9 7 30 <br /> % Recovery 95 94 97 100 <br /> Relative % Difference 4 3 2 1 1 0 3 0 <br /> RPD Control Limits 0-25 0-25 0-25 025 <br /> LCS Batch# GWLCS100398A <br /> Date Prepared 10!3198 1013198 1013198 1013!98 <br /> Date Analyzed 10!3198 1013198 1013198 1013!98 <br /> Instrument I D # GCHP03 GCHP03 GCHP03 GCHP03 <br /> Cone Spiked ug/L 10 10 10 30 <br /> LCS Recovery, ug/L 9 9 10 10 31 <br /> LCS % Recovery 99 100 100 103 <br /> Percent Recovery Control Limits <br /> MSIMSD 60140 60140 60140 60140 <br /> LCS 70130 70130 70130 70130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Note <br /> The LCS is a control sample of known interferent free matrix that is analyzed using the same reagents <br /> EQUOIA 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 /> nterference the LCS recovery is to be used to validate the batch <br /> Tod Grenrcher <br /> Project Manager <br /> I <br />