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1 ~j I I- I ;, - , , ;::Ii I,: J'" .;, I; I I I .' . . "'-,ll I I 1 . I 1 . " , " ~.< :~..~ 3562 , .~: Gbservation wells are located generally around the perimeter of the basin: however, some are located within the central area. Levels in unconfined and pressures in confined (artesian) wells will be monitored to determine the effects of pumping. A repeater radio system will provide a UHF data link with the project office. The RTUs will be provided with bi-directional radio communication with the master station ,via the radio repeater station. All RTUs will be pqlled on a scheduled basis for normal data acquisition. RTUs will automatically respond to specified changes occurring between scheduled polls. Electrical ~.J,.. The project area, which is for the most part remote and inaccessible, is served by two public utility companies. Electrical power is furnished by pUblic Service Company of Colorado (PSCo) and the San Luis Valley Rural Electric cooperative (REC). ! Prior to project construction, the majority of the area did not have an electrical system in place. Initially, a government 'power system delivering government generated power was planned for the project. This concept was changed to provide for the extension of a power distribution system into areas not previously being served by public utilities. This would make power available ito other users in and adjacent to the project. I , The system supplying power to each well site and canal structure consists of overhead and underground lines. The project will be served by 96 miles of overhead primary line, 31 miles of underground primary line, and 42 miles of underground secondary service. The Public Service company's system consists of overhead primary line to the metering point. The secondary distribution of 3-phaSe, 480V is underground to the, well site or canal structure. This portion of the system was constructed, owned, and maintained by the government. PSCo QWnS and maintains the primary system up to the meter. The San Luis Valley REC is supplying 24.9kV power to a primary metering point from their Hooper substation. The Bureau of Reclamation is constructing and owns both the primary and secondary system from the meter. :::.. The system from the primary meter consists of overhead snd underground 24.9kV primary distribution and the 3-phase, 480V secondary lines from the transformers to the well sites and other structures. That portion of the project power system west of the Great Sand Dunes National Monument and adjacent to the San Luis Lakes Wildlife area is all underground. This was done for esthetic and environmental reasons. There are 31 miles of 24.9kV primary underground cable in this portion of the system. This is a 3-phase, 24.9kV line consisting of 4 conductors and ground cable encased in an aluminum armor shield protected by a PVC coating. The cable is 3 1/2" in diameter and was installed using a Vermeer trencher. The project also has a solar-powered pumping system installed at one well site in a remote location. This stand-alone photovoltaic concentrate array pumping system was developed and Installed as a joint research project of the Department of Energy and