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1 l [11111 d#749 50 ]ihr,I mnoa)rnfnral RLint,(IT A ILIS1011€tN ILI[ Rclxn€ '2 ) 201), ' line between ASW-1 and the pressure release bleed valve to measure the total airflow pressure into ASW-1 Relevant well construction details for the remedial test wells and lateral monitoring point wells tare listed in Table 3 The AS test lasted approximately 5 25 hours and was conducted in six separate pressure/flowrate steps X11 The test began with the pressure releaseibleed valve on the air infection line fully open, thus applying a ' slight pressure to ASW-I (approximately 2 5 psi) After baseline readings were collected, the pressure release/bleed valve was closed incrementally, creating a higher pressure into ASW-1 Approximately t10 99 feet of hydrostatic head had to be overcome with the test equipment in order to force pressurized air into the aquifer through the test well screen interval Given that I psi equates to approximately 27 7 ' inches of water, the minimum pressure estimated to force air to the top of the ASW-1 screen interval was calculated at approximately 4 76 psi ' 4 13 Air Sparge Test Data Anal sis ' The AS test equipment generated a maximum air flow rate of approximately 16 cfm with a corresponding input air pressure of approximately 7 5 psi, At periodic intervals during the AS test, the pressure and flow rate into ASW-1, and the induced pressure response in the lateral monitoring point wells, were monitored and recorded on a field data sheet The AS test field data sheet has been reproduced as Table 4 Of the six monitoring point wells utilized during the AS test, five of the wells exhibited an induced pressure response Monitoring point wells MW-IC (38 feet from ASW-1), MW-2C ' (83 feet from ASW-1), MW-3B (18 feet from ASW-1), MW-4B (35 feet from ASW-1), and MW-913 (80 feet from ASW-1) exhibited maximum pressure readings (measured in inches of water column) of 0 31 inches, 0 07 inches, 4 00 inches, 168 inches, and 0 30 inches, respectively (Table 4) Monitoring point ' well MW-3C (37 feet from ASW-1) did not display any significant pressure response It should be noted, however, that the top of the screen interval in the "C" monitoring wells are below the current ' groundwater level ' In-situ dissolved oxygen readings collected from the groundwater in the lateral monitoring point wells (MW-3B, MW-3C, and MW-4B) immediately before and after the AS test indicated an increase in ' dissolved oxygen readings These three wells demonstrated an increase in dissolved oxygen ' 9