SITE INFORMATION AND CORRESPONDENCE FILE 1

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` As the available vacuum was divided among all the wells in the recovery system, the vacuum pressure at each well head was reduced accordingly. As a result macroslurp dropped off and was replaced by small droplets of water being entrained in the vacuum stream. This mode of water and vapor recovery was dubbed microslurp due to the small size of the droplets. The observation of microslurp was much more dependent on the proper tube position in relation to the water table than macroslurp. For microslurp to take place the droptube had to be placed within approximately 12.5 mm (.5") of the water table as determined by the dynamic water level determination method. The configuration of vacuum settings for the well field and the resultant mode of operation for each well when the system was turned over is presented in Table 2. Table 2. Vacuum Distribution Well T.D. Wellhead Vacuum Casing Vacuum Resultant Recovery ("H20) ("H20) VE-1 I 0.1 I NA I Biovent MW-1 8 0.5 I Bioslurp MW-2 1 I 0.8 I Biovent MW-3 I 14 I 1 I Biovent MW-5 I 12 0.3 Bioslurp MW-7 10 I 1.2 I Bioslurp MW-8 14 I 0.8 Biovent MW-9 10 0.3 I Bioslurp MW-10 12 2 Bioslurp Operations and Maintenance The MTX system requires very little in the way of maintenance other than scheduled cleaning of the strainers, bag filter, and oil water separator. A training seminar was conducted by the authors to train base personnel in the operation and maintenance of the system and as a byproduct instill in them a pride of ownership. The half-day class room session was followed by a hands on demonstration at the site. The authors developed an operations manual which was handed out during the training. A telemetry unit was installed in the control room portion of the container. This unit will call out when a fault condition occurs or will accept incoming calls to verify status. This has proven invaluable as the unit dials out to O&M personnel whenever the system is down. 387