Laserfiche WebLink
p I OAY AID 1 <br /> 680 Chesapeake Drive Redwood City CA 94063 (650) 364-9600 FAX(650)364-9233 <br /> Sequoia 404 N Wiget Lane Wainut Creek CA 94598 (9Z5)988-9600 FAX(925)988-9673 <br /> 819 Straker Avenue Suite 8 Sacramento CA 95834 (916)9Z1-9600 FAX(916)92t-0100 <br /> Analytical 1455 McDowell Blvd North Ste D Petaluma,CA 94954 (707)792-1865 FAX(707)79Z-0342 <br /> ATC Associates Client Project ID KOK Realty 62581 0001 <br /> 1260 Graphics Dr <br /> Modesto, CA 95351-1502 <br /> Attention Jeanne Homsey QC Sample Group 9809733-01 Reported Sep 25, 1998 <br /> I <br /> QUALITY CONTROL DATA REPORT <br /> Matrix Liquid <br /> Method EPA 8020 <br /> Analyst GR/DB <br /> ANALYTE Benzene Toluene Ethylbenzene Xylenes <br /> QC Batch# GCO923988TEX21A <br /> Sample No GW9809755-4 <br /> Date Prepared 9123198 9/23/98 9123/98 9123198 <br /> Date Analyzed 9123/98 9/23/98 9/23198 9/23/98 <br /> Instrument I D# GCHP21 GCHP21 GCHP21 GCHP21 <br /> Sample Conc,ug/L. N D N D N D N D <br /> Conc Spiked, ug1L 10 10 10 30 <br /> Matrix Spike, ug/L 10 10 10 31 <br /> • % Recovery 103 102 102 102 <br /> Matrix <br /> pike Duplicate,ug/L 10 10 10 31 <br /> % Recovery 105 103 102 103 <br /> I <br /> I <br /> elative%Difference 1 9 098 00 098 <br /> RPD Control Limits 0-25 0-25 0-25 0-25 <br /> LCS Batch# GWLCS092398A <br /> Date Prepared 9123/98 9123198 9/23198 9/23198 <br /> Date Analyzed 9/23198 9/23/98 9123198 9/23198 <br /> Instrument I D# GCHP21 GCHP21 GCHP21 GCHP21 <br /> Conc Spiked,ug/L. 10 10 10 30 <br /> LCS Recovery,ug/L. 11 11 11 32 <br /> LCS%Recovery 108 106 105 107— <br /> Percent Recovery Control Limits <br /> F- <br /> MS/MSD 60-140 60-140 50-140 60-140 <br /> LCS 70-130 70-130 70 130 70-130 <br /> Quality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> Please Nate <br /> The LCS is a control sample of known interferent free matnx that is analyzed using the same reagents <br /> VojectM <br /> LYTICAL 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 /> th ecovery of analytes from the matrix spike does not fall within specified control limits due to matnx <br /> rite rence the LCS recovery is to be used to validate the batch <br /> r <br />