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QUALITY CONTROL REPORT <br /> Matrix Spike/Matrix Spike Duplicate <br /> Method 8015 - Modified <br /> LP# 6738 <br /> Analyst EB Batch # 921105-0303 <br /> Date Of Analysis 13-A09192 Spike Sample ID 6738-OOIMSS #33 <br /> Column DB-1 Spike ID Code W2-1325 W2-1144 <br /> Instrument # PGC #6 Surrogate ID Code NA <br /> Matrix Soil Units <br /> (a) (b) (c) (d) (e) (f) (g) ACCEPTANCE <br /> LIMITS <br /> SAMPLE + SAMPLE SPIKE <br /> SAMPLE SPIKE SPIKE, SPIKE DUP + DUP <br /> COMPOUNDS CONC CONC CONC REC % SPIKE CONC REC % RPD % REC RPD <br /> Gasoline 0 1 83 1 67 1 81 NA NA NA 40-94 c 25 <br /> Diesel 0 83 83 100 MA NA NA 50-121 C 25 <br /> Spike Recovery — d — ((c-a)/b) x 100 <br /> Spike Duplicate Recovery — f s ((e-a)/b) x 100 <br /> Relative Percent Difference s g ( Ic-el )/((c+e) x 5) x 100 <br /> L <br /> r <br /> 1 <br /> cLz!rcn <br /> SM <br /> �r- (DC3-CN6738) <br /> ENVIRONMENTAL ENGINEERING CORPORATION WYNOd PaP„ <br />