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1 <br />' QUALITY ASSURANCE LABORATORY <br /> QUALITY CONTROL DATA REPORT <br /> 1 <br /> JUNE 16, 19 a <br /> NINYO & MOOR <br /> LOG #9219-9406 THR -9 <br /> DATE EXTRACTED: <br />' JUNE 2 , 1994- TPH-DIESEL <br /> JUNE 3 , 1994- BENZENE, TOLUENE, ETHYLBENZENE, XYLENE <br />' DATE ANALYZED: <br /> =NIE 3 , 1904- TPH-GAS <br /> JUNE 8, 1994- BENZENE, TOLUENE, ETHYLBENZENE, XYLENE <br /> ANALYSES PREP/ANALYSIS LCS SPIKE DUPLICATE <br />' METHOD RECOVERY %RECOVERY RPD <br /> TPH-GAS 3550/DHS 95% <br />' TPH-DIESEL 3550/DHS 115% 69% 1% <br /> BENZENE 5030/8020 99-0 111% 2% <br /> TOLUENE 5030/8020 76% 74% 4% <br /> ETHYLBENZENE 5030/8020 78% 86% 4% <br /> XYLENE 5030/8020 1018 110% 2% <br /> 1 � <br /> TIMOTH J WOLLIN/� <br /> DIRECTOR OF QA/QCT-� PC5� a <br /> U <br /> QUALITY CONTROL TERMINOLOGY <br /> LSA LABORATORY CONTROL STANDARD REPORTED AS% RECOVERY OF AN INDEPENDENT STANDARD CARRIED THROUGH ALL SAMPLE PREPARATION <br /> PROCEDURES TO VERIFY METHOD PERFORMANCE ACCEPTABLE RANGE IS BASED ON HISTORICAL LABORATORY CONTROL DATA AND EPA REQUIREMENTS <br /> ANY OUT OFCONTROL QC 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"IS BASED ON HISTORICAL LABORATORY CONTROL DATA <br /> _ ANY OVTCF.CONTROL OC DATA IS CLEARLY INDICATED <br /> lWiftQZAj.Ej COMPOUNDS REPRESENTATIVE OF A GROUP 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-OF-CONTROL DATA IS CLEARLY INDICATED <br />