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I? <br /> QUALITY ASSURANCE L IAB i� RATORY <br /> QUALITY CONTROL DATA REPORT <br /> August 15, 1994 <br /> TREATEK, INC. <br /> SAMPLE LOG , 12701-9408 THROUGH 12703-94018 <br /> DATE ANALYZED: AUGUST 12, 1994 <br /> EXTRACTION METHOD: 5030 <br /> ANALYSIS METHOD: 601 <br /> METHOD BLANK <br /> NO TARGET ANALYTES WERE DETECTED INf,THE ' METHOD BLANK. <br /> LC8 DATA ;LABORATORY <br /> COMPOUND CONTROL SAMPLE <br /> (20PPb) <br /> TRICHLOROETHENE } 146% <br /> CHLOROFORM '' 125% <br /> 1, 1, 1-TRICHLOROETHANE 131% <br /> CHLOROBENZENE 117% <br /> 1,2-DICHLOROPROPANE ' 126% <br /> TETRACHLOROETHENE 122% <br /> SPIKE DATA <br /> il4 <br /> �i <br /> f SPIKE RELATIVE <br /> COMPOUND %RECOVERYI % DIFFERENCE <br /> TRICHLOROETHENE 104% 0% <br />' CHLOROFORM 97% 1 7% <br /> 1, 1, 1-TRICHLOROETHANE 99% 1, 7$ <br /> CHLOROBENZENE : 88% 1t <br /> 1,2-DICHLOROPROPANE 101% 1r 8% <br /> TETRACHLOROETHENE 91% 6% <br /> A complete list of compounds is available upon request. <br /> ,j <br /> ;I <br /> 4 REBECCA L. RUSH <br /> QA/QC SPECIALIST <br /> 1 <br /> QUALITY CONTROL TERMINOLOGY <br /> N <br /> i <br /> $-LABORATORY CONTROL STANDARD.REPORTED AS%RECOVERY OF AN INDEPENDENT STANDARD CARRIED THROUGH ALL SAMPLE PREPARATION <br /> i PROCEDURES TO VERIFY METHOD PERFORMANCE.ACCEPTABLE RANGE IS BASED ON HISTORICALILABORATORYCONTROL DATA AND EPA REQUIREMENTS. <br /> ANY OUT-OF.CONTROL OC DATA IS CLEARLY INDICATED. <br /> SPIKE - ENVIRONMENTAL SAMPLE IS MATRIX SPIKED WITH METHOD COMPOUNDS AND% RECOVERY OF CONCENTRATION SPIKED INTO SAMPLE IS <br /> CALCULATED.REPORTED AS%RECOVERY.ACCEPTABLE RANGE FOR"NORMAL MATRIX SAMPLE-IIS BAS ED ON HISTORICAL LABORATORY CONTROL DATA. <br /> ANY OUT-0F-CONTROL OC DATA IS CLEARLY INDICATED. <br /> SURROGATES-COMPOUNDS REPRESENTATIVE OF AGROUP OF COMPOUNDS.SURROGATES ARE SPIKED INTO ENVIRONMENTAL SAMPLES AND%RECOVERY <br /> OF CONCENTRATION SPIKED IS CALCULATED AND REPORTED.ACCEPTABLE RANGE VARIES DEPENDING ON SAMPLE MATRIX AND ANALYSIS METHOD. ANY <br /> OUT-0F-CONTROL DATA IS CLEARLY INDICATED. II 2b <br /> 1 <br />