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QUALITY CONTROL REPORT <br /> Laborato Control Sample/Laboratory Control Sample Duplicate <br /> Method 810 (Modified) <br /> Medium Level LP# 7639A <br /> i <br /> Analyst TB Batch # 930601-0901 <br /> Date Of Analysis 06/08/93 Spike Sample ID LCSZLCSD_S67 <br /> Column RTX-1 Spike ID Code W-1-706 <br /> Instrument # 1 Surrogate ID Cade W-1-681 <br /> Matrix Soil Units _ mg/Kir <br /> (a) (b) (d) (e) (S) <br /> SAMPLE ACCEPTANCE <br /> SAMPLE DUP LIMITS <br /> + + SPIKE <br /> EPA SAMPLE SPIKE SPIKE SPIKE SPIKE DUP <br /> METHOD COMPOUNDS CONC CONC CONC REC% CONC REC % RPD% %REC RPD <br /> 8010 1,1 -Dichloroethane 0 00500 00338 688 00405 81 18 75- 125 c25 <br /> 8010 1,1,1 -Tnchloroethane 0 00500 00390 78 00455 91 15 75-125 C25 <br /> 8010 Tnchloroethene 0 00500 00472 94 00470 94 0 7S- 125 C25 <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) �I) <br /> SAMPLE <br /> SAMPLE DUP ACCEPTANCE <br /> SUR + + SUR SUP, DUP LIMITS <br /> EPA SURROGATE SPIKE SUR SPIKE SUR SPIKE RECOVERY <br /> METHOD COMPOUNDS DET CONC CONC REC % CONC % %REC <br /> 8010 o-Chlorotoluene Hall 0200 0 223 112 0 215 108 43-158 <br /> Surrogate Recovery — j = (i/h) x 100 <br /> Surrogate Dup Recovery — 1 = (k/h) x 100 <br /> a The LCS recovery is beyond advisory acceptance limits The calibration data associated with <br /> this laboratory project for the same instrument on the same day were within acceptance limits <br /> MBT Environmental <br /> Laboratories <br /> 11��11 <br />