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QUALITY CONTROL REPORT <br /> Laboratory Control Sample/Laboratory Control Sample Duplicate <br /> Metals <br /> LP 8514 Instrument # TJA4000 <br /> Date of Analysis 12[10/93 Spike Sample ID LCSW/LCSDW _ <br /> Date of Digestion 12L08/93 Spike ID Code W4-4183 <br /> Batch # 93120E-4304 Matrix Water Units ug/L <br /> (a) (b) (c) (d) (e) (0 (B) <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> + + SPIKE LIMITS <br /> SAMPLE SPIKE SPIKE SPIKE SPIKE DUP RPD <br /> METALS CONC CONC CONC REC% CONC REG% % RBC% RPD <br /> Pb 0 <br /> 200 207 104 ZO 8 104 0 80- 120 X20 <br /> --Spirce Recovery m c-a)/b) x 100 <br /> Spike Duplicate Recovery — f a ((e-a)/b) x 100 <br /> Relative Percent Difference — g — ( Ic-el )/((c+e) x 5) x 100 <br /> r <br /> 1 <br /> r <br /> MBT Environmental <br /> Laboratories �� �� (CN8514) <br /> r <br />