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' QUALITY CONTROL REPORT <br /> Laboratory Control Sample/Laboratory Control Sample Duplicate <br /> Method 8020 <br /> Medium Level LP# 6743 <br /> Analyst TB Batch # 921106-0901 <br /> Date Of Analysis 11/09/92 Spike Sample ID LCS LCSDS #34 <br /> Column DB1 Spike ID Code W-1-616 <br />' Instrument # 4 Surrogate ID Code W-1-493 <br /> Matrix Soil Units m K <br /> {a) (E) (d) (0 (g) <br /> SAMPLE ACCEPTANCE <br /> SAMPLE DUP LIMITS <br /> + + SPIKE <br /> EPA SAMPLE SPIKE SPIKE SPIKE SPIKE DUP <br /> METHOD COMPOUNDS CONIC CONIC CONIC REC% CONIC REC % RPI % %REC RPD <br /> 8020 Chlorobenzene 0 0 050 0 046 92 0 043 86 7 75-125 <25 <br /> 1 8020 Benzene 0 0 050 0 049 98 0 046 92 6 75-125 X25 <br /> 8020 Ethyl Benzene 0 0 050 0 048 96 0 045 90 6 75-125 <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 /> (h) (k) (1) <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 CONICCONC REC % CONIC % %REC <br /> 8020 o-Chiorotoluene PID 0 20 0 24 120 022_ 110 1 56- 131 <br />' Surrogate % Recovery j _ (i/h) x 100 <br /> Surrogate Dup % Recovery 1 = (k/h) x 100 <br />' carep-ansm <br /> FM L <br /> art <br /> ENVIRONMENTAL ENGINEERING CORPORATION afficnkdpnaei <br />