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QUALITY ASSURANCE LABORATORY <br /> QUALITY CONTROL REPORT <br /> JUNE 16, 19 a <br /> NINYO & MOOR - <br /> LOG #9536-9406 TH G 6 <br /> DATE EXTRACTED: <br /> JUNE 10, 1994- LEAD <br /> DATE ANALYZED: <br />' JUNE 8, 1994- TPH-GAS <br /> JUNE 9 , 1994- BENZENE, TOLUENE, ETHYLBENZENE, XYLENE <br /> ANALYSES PREP/ANALYSIS LCS SPIKE DUPLICATE <br /> METHOD RECOVERY %RECOVERY RPD <br /> TPH--GAS 3550/DHS 91% <br /> ' BENZENE 5030/8020 100% 102% 2% <br /> TOLUENE 5030/8020 101% 98% 12% <br /> ETHYLBENZENE 5030/8020 97% 94% 13% <br /> XYLENE 5030/8020 123% 91% 5% <br /> LEAD 3050/7421 93% 98% 3% <br /> 'TIMOTHY OLLI <br /> DIRECTOR OF QA/Q <br /> � U a <br /> QUALITY CONTROL TERMINOLOGY <br /> L" LABORATORY CONTROL STANDARD REPORTED AS% RECOVERY OF AN INDEPENDENT STANDARD CARRIED THROUGH ALL SAMPLE PREPARAT1,0141 <br /> PROCEDURES TO VERIFY METHOD PERFORMANCE ACCEPTABLE RANGE IS BASED ON HISTORICAL LABORATORY CONTROL DATA AND EPA REQUIREMENTS <br /> ANY OUT-0FLONTROL OC DATA IS CLEARLY INDICATED <br /> SAMPLE IS <br /> C� ENVIRONMENTAL SAMPLE <br /> NTO <br /> VLATED RE ORTED AS%RECOVERY AL <br /> ACCEPTABLE RANGE FOR NORMAL MATRIX SAMPLE-IS BASED ON HISTORICAL LABORATORYATRIX SPIKED VirrK METHOD COMPOUNDS AND % RECOVERY OF CONCENTRATION SPIKEDFCONTROL DATA <br /> i <br /> ANY OUT-0E-CONTROL OC DATA IS CLEARLY INDICATED <br /> -5URftoGACOMPOUNDS REPRESENTATIVE OFAGROUPOFCOMPOUNOS SURROGATES ARE SPIKED INTO ENVIRONMENTALSAMpLESAND%RECOVERY <br /> TEs^ <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 <br />