Laserfiche WebLink
QUALITY CONTROL REPORT, CONTINUED <br />' NOVEMBER 16, 1992 <br />TREATEK, INC. <br />SAMPLE LOG 020179-92K THROUGH 20183-92K <br />DATE ANALYZED: NOVEMBER 6, 1992 <br />EXTRACTION METHOD: 5030 <br />ANALYSIS 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 15 ppb standard verification was run in the sample set up. <br />METHOD BLANK <br />NO TARGET ANALYTES WERE DETECTED IN METHOD BLANK. <br />COMPOUND <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes <br />LCS <br />%RECOVERY <br />120% <br />120% <br />125% <br />106% <br />SPIKE DATA <br />A QAL Method Blank was spiked in duplicate with 20 ppb 8020 <br />standard. <br />COMPOUND <br />Benzene <br />Toluene <br />Ethylbenzene <br />Xylenes <br />YVETTE J. LIEBESMAN <br />QA SPECIALIST <br />QUALITY CONTROL TERMINOLOGY <br />SPIKE <br />% RECOVERY <br />109% <br />106% <br />109% <br />96% <br />RELATIVE <br />DIFFERENCE <br />13% <br />14% <br />14% <br />14% <br />•LCS - LABORATORY CONTROL STANDARD REPORTED AS % RECOVERY OF AN INDEPENDENT STANDARD CARRIED THROUGH ALL <br />SAMPLE PREPARATION PROCEDURES TO VERIFY METHOD PERFORMANCE ACCEPTABLE RANGE IS BASED ON HISTORICAL <br />LABORATORY CONTROL DATA, BUT IS GENERALLY WITHIN A 80%-120% RECOVERY RANGE <br />.SPIKE - ENVIRONMENTAL SAMPLE IS MATRIX SPIKED WITH METHOD COMPOUNDS AND % RECOVERY OF CONCENTRATION SPIKED <br />INTO SAMPLE IS CALCULATED REPORTED AS % RECOVERY. ACCEPTABLE RANGE FOR "NORMAL MATRIX SAMPLE" IS BASED ON <br />HISTORCCAL LABORATORY CONTROL DATA, BUT IS GENERALLY WITHIN A 75%-125% RECOVERY RANGE <br />•SURROGATES - COMPOUNDS REPRESENTATIVE OF A GROUP OF COMPOUNDS. 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 />