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QUALITY CONTROL REPORT <br /> Laboratory Control Sample <br /> Total Petroleum Hydrocarbons/TPH-Gasoline <br /> LP# 11231 <br /> Date of Analysis 02/23/95 Spike Sample ID 0223-LCSW <br /> Column DB624 Spike ID Code W-1-1035 <br /> Instrument # 6 Surrogate ID Code W-1-1039 <br /> Matrix Water Units,- up-/L <br /> (a) (b) (c) (d) (c) (F} (g) ACCEPTANCE <br /> LIMITS <br /> SAMPLE + SAMPLE DUP SPIKE <br /> SAMPLE SPIKE SPIKE SPIKE + DUP <br /> IGCO,, <br /> MPOUNDS CONC. CONC CONC. REC% SPIKE CONC REC.% RPD% %REC. RPD <br /> oline 0 100 110 110 NA NA NA 1 100- 127 520 <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) 0) (k) (1) <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> SUR_ + + SUR.DUP L inns <br /> SURROGATE SPIKE SUR SPIKE SUR. REC. SURSPIKE RECOVERY <br /> COMPOUNDS CONC I CONC % I CONC. % %n REG <br /> a^a-Tnlluorotoluene 400 413 103 NA NA 63- 134 <br /> Surrogate % Recovery j — (i/h) x 100 <br /> Surrogate Dup % Recovery — 1 — (k/h) x 100 <br /> MBT Environmental <br /> Laboratories jj j <br /> (CH11231) <br /> �4 <br />