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Client Number <br />. Project <br /> Work Order Number <br /> QC Check Sample Results <br /> Date of Expected <br /> Analyte Source Analysis Value Units Recoverya, % <br /> Modified EPA 8020: <br /> Benzene Supelco 09/09/93 50 ug/L 954 <br /> Toluene Supelco 09/09/93 50 ug/L 922 <br /> Ethylbenzene Supelco 09/09/93 50 ug/L 915 <br /> Xylene,total Supelco 09/09/93 150 ug/L 932 <br /> Metals, <br /> Cadmium VHG LOT#21039H 09/10/93 500 ug/L 956 <br /> Chromium VHG LOT #210396 09/10/93 1000 ug/L 101 <br /> Copper VHG LOT #21039H 09/10/93 1000 ug/L 102 <br /> Lead VHG LOT #21039H 09/10/93 50 ug/L 103 <br /> Nickel VHG LOT #21039H 09/10/931000 ug/L 101 <br /> Zinc VHG LOT #21039H 09/10/93 1000 u L 105 <br /> i <br /> QC Matrix Spike and Duplicate Spike Results <br /> Matrix Water <br /> Sample Date of Spike Recovery, Duplicate <br /> Analyte ID Analysis Amount Units % Recovery, % RPDa, 96 <br /> Modified EPA 8020: <br /> Benzene C3080410-2 09/07/93 200 ug/L. 95 5 1030 76 <br /> Toluene 03080410-2 09/07/93 200 ug/L 945 1010 66 <br /> Ethylbenzene 03080410-2 09/07/93 200 ug/L 95 5 975 21 <br /> Xylene,total 03080410-2 09/07/93 600 ug/L. 943 979 3 6 <br /> Metals: <br /> Cadmium C3090044-1 09/10/93 2500 ug/L 852 964 123 <br /> Chromium 03090044-1 09/10/93 5000 ug/L 902 920 198 <br /> Copper C3090044-1 09/10/93 5000 ug/L. 883 857 296 <br /> Lead 03090044-1 09/10/93 5000 ug/L 904 868 406 <br /> Nickel 03090044-1 09/10/93 5000 ug/L 914 902 132 <br /> Zinc 03090044-1 09 10 93 5000 u L 89 5 86 7 3 15 <br /> a See attached table for acceptability limits <br /> 3 Concord,CA <br /> CJ] GTEL <br /> 03088 0475 PME <br /> EN VIR0NM6NTAL <br /> 1_ LABORATORIES INC <br />