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QUALITY CONTROL REPORT <br /> Laboratory Control Sample/Laboratory Control Sample Duplicate <br /> Method 80 .5 - Modified <br /> LP# 8051 <br /> Analyst JD Batch # 930908-0301 <br /> Date Of Analysis 09/09/93 Spike Sample ID LCSW/LCSDW 63 <br /> Column DB1 Spike ID Code W2-1690 <br /> Instrument # PGC#4 Surrogate ID Code NA <br /> Matrix Water Units rn L <br />' (a) (b) (e) (d) (e) (f7 (g) ACCEPTANCE <br /> LIMnn <br /> SAMPLE + SAMPLE SPIKE <br /> SAMPLE SPIKE SPIKE SPIKE DUP + DUP <br /> COMPOUNDS CONC CONC CONC REC % SPIKE CONC REC % RPD % %REC RPD <br /> Diesel 0 250 186 74 176 70 6 34-153 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 = ( Ic-el )/( (c+e) x 5) x 100 <br /> MBT Environmental (CPFF`� NIzster BUdders T ecri-ol;,;s e, <br />' Laboratories LIM <br /> (CN8051) <br />