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QUALITY CONTROL REPORT <br /> Laboratory Control Sample/Laboratory Control Sample Duplicate <br /> Method 8015 - Modified <br /> LP# 6755 <br /> rr Analyst EB Batch # 921109-0302 <br /> Date 0£ Analysis 11112/92 Spike Sample ID �LCSS LCSDS #28 <br /> Column DBI Spike ID Code W2-1325._W2-1144 <br /> Instrument # PGC#4 Surrogate ID Code ISA <br /> Matrix Soil Units mg/Kg <br /> (a) (b) (c) (d) (e) M (9) ACCEPTANCE <br /> LIMITS <br /> SAMPLE + SAMPLE SPIKE <br /> SAMPLE SPIKE SPIKE SPIKE DUP + DUP <br /> COMPOUNDS CONC CONC CONC REC % SPIKE CONC MC % RPD %REC RPD <br /> Gasoline 0 83 43 52 44 53 2 40-84 C 25 <br /> D,esel 0 83 66 80 64 77 3 50-121 C 25 <br /> Spike Recovery — d — ((c-a)/b) x 100 <br /> Spike Duplicate Recovery — f .- ((e-a)/b) x 100 <br /> Relative Percent Difference — g — ( Ic-el )/((c+e) x 5) x 100 <br /> Ana <br /> Lar�n Sm <br /> r� <br /> ENVIRONMENTAL ENGINEERING COPPOPATION 40WKWd <br />