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QUALITY CONTROL REPORT <br /> Matrix Spike/Matrix Spike Duplicate <br /> Method 8020 <br /> iWedium Level <br /> LP# 11231 Batch # 950221-5601 <br /> Date Of Analysis 02/27/95 Spike Sample ID 11231-26MS/MSD <br /> Column DBWax Spike ID Code W-1-1001 <br /> Instrument # 3 Surrogate ID Code- W-1-1044 <br /> Matrix* Soil Units- ug/Kg <br /> (a) (b) (e) (d) (e) M (9) <br /> SAMPLE ACCEPTANCE <br /> SAMPLE DUP LIMITS <br /> + + SPIKE <br /> EPA SAMPLE SPIKE SPIKE SPIKE SPIKE DUP <br /> METHOD COMPOUNDS CONC. CONC, CONC. REC.%a CONC. REC.% RPD% %REC. RPD <br /> 8020 Chlorobenzene 0 250 196 78 219 88 11 60-128 <25 <br /> 8Benzene 0 250 198 79 176 70 12 70-124 <25 <br /> =ao: <br /> Ethyl Benzene 0 250 208 83 237 95 13 67-128 <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 - ( le-el )/((c+e) x .5) x 100 <br /> (h) {t) G) (k) (l) <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> SUR + + SUR SUR DUP LIMITS <br /> EPA SURROGATE SPIKE SUR SPIKE SUR SPIKE RECOVERY <br /> METHOD COMPOUNDS DET CONC. CONC, REC.% CONC. % %REC. <br /> 8020 Bromonuorobenune PID 200 99 SS 97 48° 51-102 <br /> Surrogate % Recovery - j - (i/h) x 100 <br /> Surrogate Dup % Recovery - 1 - (k/h) x 100 <br /> ' Sample surrogate recovery is beyond acceptance limits. All other quality control is <br /> acceptable <br /> MBT Environmental <br /> Laboratories �� �� <br /> (CN11231) <br />