Laserfiche WebLink
Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Iwo Analytical 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)792-034Z <br /> ATC Associates, Inc Client Project ID: Glover Property 17861.0001 <br /> 1260 Graphics Drive <br /> Modesto, CA 95351-1502 <br /> Attention: Jeanne Homsey QC Sample Group: 9806126-02-03 Reported: Jul 10, 1998 <br /> QUALITY CONTROL DATA REPORT <br /> Matrix: Liquid <br /> Method: EPA 8020 <br /> Analyst: N. Herrera <br /> ANALYTE Benzene Toluene Ethylbenzene Xylenes <br /> QC Batch#: GC0706986TEX03A <br /> Sample No.: GW9806G23-2 <br /> Date Prepared: 716!98 716198 716198 716198 <br /> Date Analyzed: 716198 716198 716198 716198 <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 /> Matrix Spike, ug/L: 9.4 9.7 9.8 30 <br /> % Recovery: 94 97 98 100 <br /> Matrix <br /> Spike Duplicate, ug/L: 10 10 11 33 <br /> % Recovery: 102 104 107 109 <br /> Relative % Difference: 8.2 7.0 8.8 8.6 <br /> HPD Control Limits: 0-25 0-25 0-25 0-25 <br /> LCS Batch#: GWBLK070698ABS <br /> Date Prepared: 716198 716198 716198 716198 <br /> Date Analyzed: 7/6198 716198 716198 716198 <br /> Instrument I.D.#: GCHP03 GCHP03 GCHP03 GCHP03 <br /> Cone. Spiked, ug/L: 10 10 10 30 <br /> LCS Recovery, ug/L: 10 11 11 33 <br /> LCS % Recovery: 104 106 109 110 <br /> Percent Recovery Control Limits: <br /> MS/MSD 60.140 60-140 60.140 60-140 <br /> LCS 70-130 70-130 70-130 70-138 <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 /> SEQUOIA ANALYTICAL preparation,and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br /> .'1 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 recover is to be used to validate the batch. <br /> Kayva <br /> Project Manager <br />