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the past several years. Observation wells established during construction of the Closed Basin Division within and adjacent to the project boundary will be monitored by the PMSC system. Eighty-two "EW" wells will be monitored. The PMSC system will monitor on a daily basis 81 of these wells and one artesian well will be monitored monthly by manual measurement. Of the 82 "EW" wells, 15 monitor the unconfined aquifer only, 15 monitor tIle confined aquifer only, and 52 monitor both aquifers. The PMSC system utilizes sensors placed in the wells to monitor water levels. Information obtained by the PMSC system will be stored in the computer system and used on a regular basis for evaluation of the drawdown at the project boundary and the affect on the confined aquifer. The basis of the project requires that the ground water table be drawn below the root zone of some species of terrestrial vegetation which has been estimated to be approximately 13 feet below ground level. Higher yields are anticipated during this phase of pumping as the unconfined aquifer will be mined. Once this phase is accomplished, project personnel will attempt to establish within the production objectives a withdrawal which will remove an amount of water less than or equal to, but not in excess of, that which would ordinarily be lost due to evapotranspiration. During all phases of pumping, both aquifers will be monitored and these data will be used to help determine any influences at the project boundary or in the confined aquifer resulting from project pumping. r' "", .., .. "." .... . .' '~ 10,_ ~i :...; U A ground water hydrologist will be working out of the ALB office of Reclamation with Closed Basin Division personnel initially monitoring and evaluating ground water data with the long term goal of establishing a boundary datum that accounts for non-project trends. This may then allow for an eva- luation of project effects at the boundary and within the confined aquifer. 18