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14 1c- FPOrl TPE�-TEF' Ih1 TQ 6-4640138 P 05 <br /> .3� <br /> QU'ALI'FY CONTROL REPORT, CONTINUED <br /> JANUARY 27, 1992 <br /> • TREATEK, INC. <br /> SAMPLE LOG ,x`946--92A THROUGH 947-92A <br /> DATE ANALYZED: JANUARY 22, 1992 <br /> EPA METHOD 8020 <br /> Concentrations were calculated using a 4 point curve of <br /> concentrations 2. 5, 5, 10 and 20 ppb, <br /> LABORATORY CONTROL STANDARD <br /> A 20 ppb standard verification was run in the sample set up. <br /> METHOD BLANK <br /> NO TARGET ANALYTES WERE DETECTED IN METHOD BLANK. <br /> COMPOUND %RECOVERY <br /> Benzene 94% <br /> Toluene 95% <br /> Ethylbenzene 97% <br /> Xylenes 117% <br /> SPIKE DATA <br /> Log# 1132-92A was spiked in dupla--ate with 20 ppb 8020 <br /> standard. <br /> COMPOUND SPIKE RELATIVE <br /> % RECOVERY $ DIFFERENCE <br /> Benzene 85k 17% <br /> Toluene 88k 17% <br /> Ethylbenzene 89k 14% <br /> Xylenes 999 135 <br /> LISA MACC <br /> QA/QC DIRECTOR <br /> OtALITY CONTROL TERMINOLOGY <br /> •LCS - LABORATORY CONTROL STANDARD REPORTED AS X RECOVERY LF AN INDEPENDENT STANDARD CARRIED THROUGH ALL <br /> SAMPLE PREPARATION PROCEDURES TO VERIFY METHOD PERFORMANCE ACCEPTALBE RANGE IS 80%-120% RECOVERY <br /> *SPIKE - ENVIRONMENTAL SAMPLE IS MATRIX SPIKED WITH METHOD CCMPOUNOS AND % RECOVERY OF CONCENTRATION SPIKED <br /> INTO SAMPLE IS CALCULATED REPORTED AS % RECOVERY ACCEPTABLE RANGE FOR "NORMAL MATRIX SAMPLE" IS 75%•125% <br /> RECOVERY. <br /> •SMRMTES - COMPOUNDS REPRESENTATIVE OF A GROUP OF CONPOUNCS. SURROGATES ARE SPIKED INTO ENVIRONMENTAL <br /> SAMPLES AND % RECOVERY OF CONCENTRATION SPIKED IS CALCULATED AND REPORTED ACCEPTABLE RANGE VARIES DEPENDING <br /> ON SAMPLE MATRIX AND ANALYSIS METHOD <br />