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e <br /> Client BSK Pleasanton <br /> BSK L9b Number Ch94306e <br /> Project Nome Van Oen Bergh <br /> Project Number P92210 3 <br /> Page 3 of 4 <br /> BSK ANALYTICAL LABORATORIES <br /> ORGANIC QA/QC SUMMARY REPORT <br /> AnalysisJAnalyte Run No Units DLR MB LCS Spikes Analyst Initials <br /> Result LCS%Rec MS%Rec MSD%Ree RPO <br /> BTEX by EPA Method 8020 <br /> Benzene 94005 pg/L 0 3 <0 3 105 100 99 <1 IA <br /> Toluene 94005 pg/L 0 3 <0 3 100 100 100 <1 IA <br /> Ethylbenzene 94005 pg/L 03 <03 100 101 99 <1 IA <br /> m Xylene 94005 pg/L 0 3 <03 102 100 99 <1 IA <br /> o-Xylene 94005 ,gtL 03 <0 3 1 ill 100 99 <1 j IA <br /> p Xylene 94005 pgJL <br /> 0.3 <0 3 106 98 97 <1 IA <br /> TPH-Diesel <br /> TPH-Diesel 940A6 L 50 <50 1 87 98 92 6 IA <br /> DLR Detection Limit for Reporting Purposes LCS Laboratory Control Sample MS Matrix Spike MSD Matrix Spike Duplicate RPD Relative Percent Difference % <br /> Rae Percent Recovery MB Method Blank <br /> RPD= DI-D2 X100 Percent Reco very= X X100 <br /> 0 5 (DAD4 T <br /> I <br /> } D1 = first sample value, D2 = second sample value, X = the observed value of measurement, T = "true" value <br />� I <br /> i <br /> A N A I Y f I C A I <br /> � LABORAT0RIES <br />