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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 0221-LCSS-1 <br /> Column RTX-VOA Spike ID Code W-1-1035 <br /> Instrument # 3 Surrogate ID Code- W-1-1044 <br /> Batch # 950221-5601 Matrix Soil Units u K <br /> (a) (b) I (c) (d) (f) (9) ACCEPTANCE <br /> LIMITS <br /> SAMPLE + SAMPLE DUP SPIKE <br /> SAMPLE SPIKE SPIKE SPIKE + DUP <br /> COMPOUNDS CONC. CONC. CONC. REC % SPIKE CONC. REC.% RPD% %REC. RPD <br /> Gasoline 0 2500 2300 93 NA NA NA 75-125E;Ell <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) G} G) (r) (I) <br /> SAMPLE <br /> SAMPLE DUP ACCEYTANCE <br /> SUR + + SUR DUP LIMITS <br /> SURROGATE SPIKE SUR SPIKE SUR REC. SUR.SPIKE RECOVERY <br /> COMPOUNDS CONC. CONC. % CONC. % %REG <br /> Bromolluorobenzene 200 162 81 NA NA SI -102 <br /> Surrogate % Recovery — j — (i/h) x 100 <br /> Surrogate Dup % Recovery - 1 - (k/h) x 100 <br /> MBT Environmental - <br /> Laboratories �� �� <br /> (CN11231) <br />