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QUALITY CONTROL REPORT <br /> F <br /> boratory Control Sample/Laboratory Control Sample Duplicate <br /> ethod 602 <br /> LP 8514 Spike Sample ID LCS/LCSDW-55 _ <br /> Date Of Analysis 11/30/93 Spike ID Code W-1-835 <br /> Column DBWAX Surrogate ID Code W-1-827 <br /> Instrument # 6 Matrix Water Units u /, /L <br /> (a) (b) (c) (d) (e) (t) (g) <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> + + SPIKE LIMITS <br /> EPA SAMPLE SPIKE SPIKE SPIKE SPIKE DUP <br /> METHOD COMPOUNDS CONC CONC CONC REC% CONC REC % RPD% %REC RPD <br /> 602 Chlorobenzene 0 400 402 100 393 98 2 69-131 X20 <br /> 602 Benzene 0 4 00 376 94 391 98 4 72- 134 :5 <br /> 602 Ethyl Benzene 1 0 400 389 97 1 382 96 1 2 1 72-128 t_20 <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 /> (h) (k) (1) <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> SUR + + SUR.DUP LIMITS <br /> EPA SURROGATE SPIKE SUR SPIKE SUR REC SUR-SPIKE RECOVERY <br /> METHOD COMPOUNDS DET CONC CONC % CONC % %REC <br /> 602 a,a,a,Tnfluorotoluene PID 4 00 364 91 374 94 63- 134 <br /> Surrogate % Recovery a — (i/h) x 100 <br /> Surrogate Dup % Recovery — 1 — (k/h) x 100 <br />�r <br /> 6 <br /> MBT Environmental <br /> to <br /> Laboratories �� �� <br /> (CN8514) <br /> ��9 <br />