Laserfiche WebLink
SEQUOIA ANALYTICAL <br /> 1900 Bates Avenue * Suite LM • Concord, California 94520 <br /> (415) 686-9600 & FAX (415) 686-9689 <br /> Applied GeoSystems(Sacramento) Client Project ID ARCO#760/#760-91-1 <br /> 4191 E Power Inn Rd <br /> Sacramento, CA 95826 <br /> Y Attention Eloise Frick OC Sample Group 1060576-79 Reported Jun 24, 1991 <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl <br /> Benzene Toluene Benzene Xylenes <br /> Method EPAS015/8020 EPA8015/8020 EPAS015/8020 EPAS015/8020 <br /> Analyst RH/JF RH/JF RH/JF RH/JF <br /> Reporting Units ppb ppb ppb ppb <br /> Date Analyzed ,tun 21, 1991 Jun 21, 1991 Jun 21, 1991 Jun 21, 1991 <br /> t OC:Sample# BLK062191 BLK062191 BLK062191 BLK062191 <br /> Sample Conc N D N D N D N D <br /> Spike Conc. <br /> Added: 20 20 20 60 <br /> Conc. Matrix <br /> Spike: 15 14 15 49 <br /> Matrix Spike <br /> %Recovery. 75 70 75 82 <br /> Conc. Matrix <br /> Spike Dup ' 19 19 20 64 <br /> Matrix Spike <br /> Duplicate <br /> %Recovery: 95 95 100 110 <br /> Relative <br /> %Difference: 24 30 29 27 <br /> Ouality Assurance Statement All standard operating procedures and quality control requirements have been met <br /> QEQUOIA AN YTIC I_ %Recovery Conc of M S -Conc of Sample x 100 <br /> Spike Conc Added <br /> Relative%Difference Conc of M S -Conc of M S D x 100 <br /> JIVa R Malerstein (Conc of M S + Conc of M S D) 2 <br /> jest Manager 1060575 APS <19> <br />