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Client Number 13NC01ARC01 <br /> Facility Number 434 <br /> Arco Representative Chuck Carmel <br /> Work Order Number C3-11-0032 <br /> QC Check Sample Results <br /> Date of Expected <br /> Analyte Source Analysis Value Units Recoverya, <br /> Modified EPA 8020 <br /> Benzene Supelco 09/27/93 500 ug/L 109 <br /> Toluene Supelco 09/27/93 500 ug/L 103 <br /> Ethylbenzene Supelco 09/27/93 500 u L <br /> g/ 104 <br /> X Iene, total Supelco 09/27 93 150 ug/L 105 <br /> QC Sample and Sample Duplicate Results <br /> Matrix Air <br /> • <br /> Sample pate Sample <br /> Analyte p of Sample Duplicate Control <br /> Yt ID Analysis Units Results Results RPD, % Limits <br /> Modified EPA 8020 <br /> Benzene C3110035-01 11/03/93 ug/L 0 805 0 925 139 53 <br /> Toluene C3110035-01 11/03/93 ug/L 1 39 1 53 g g 39 <br /> Ethylbenzene C3110035-01 11/03/93 ug/L <05 0 552 NA 33 <br /> Xylene, total C3110035-01 11 03 93 ug/L 448 560 22 2 41 <br /> NA = Not Applicable <br /> • <br /> GTI.Concord,CA JIGTEL03110032 BGAT <br /> LASORATpRIES INc <br />