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. 04/17/92 <br /> Check the influent and effluent from the system and the vapor <br /> from the wells using a Photovac lOS50 chromatograph. System <br /> set at 64 . 6% air dilute. <br /> 04/21/92 <br /> Check the influent and effluent from the system and the vapor <br /> from the wells using a Photovac 1OS50 chromatograph. System <br /> set at 63 . 4% air dilute. <br /> 04/24/92 <br /> Check the influent and effluent from the system and the vapor <br /> from the wells using a Photovac lOS50 chromatograph. System <br /> set at 54 . 9% air dilute. <br /> 04/29/92 <br /> Check the influent and effluent from the system and the vapor <br /> from the wells using a Photovac lOS50 chromatograph. System <br /> set at 58 . 2% air dilute . <br /> 05/15/92 <br />. Check the influent and effluent from the system and the vapor <br /> from the wells using a Photovac 10550 chromatograph. System <br /> set at 64% air dilute <br /> 05/21/92 <br /> Collect samples from the influent and effluent of the system <br /> for WEGE laboratory System set at 74% air dilute. <br /> 06/02/92 <br /> Unit off on arrival; restart unit. Collect samples from the <br /> influent and effluent of the system for WEGE laboratory. <br /> System set at 70% air dilute. <br /> 06/18/92 <br /> Unit off on arrival; restart unit. Collect samples from the <br /> influent and effluent of the system for WEGE laboratory. <br /> System set at 75% air dilute . <br /> 06/22/92 <br /> Unit off on arrival , restart unit. Check the influent and <br /> effluent from the system and the vapor from the wells using a <br /> Photovac 1OS50 chromatograph System set at 65% air dilute <br />• <br /> page 2 of R603 , 09/10/92 <br />