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and install the alluvial piezometers. • <br />The aquifer tests will be performed on the D Seam, E Seam, and alluvium. <br />It is anticipated that a 1000-minute constant discharge test with a subsequent <br />1000-minute recovery test be performed on all three aquifers. However, if the <br />transmissivity of the coal aquifers is such that prolonged pumping cannot be <br />maintained, then an instantaneous drawdown test will be performed. Values for <br />transmissivity, storage coefficient (or specific storage), and veritical permea- <br />bility of the confining layer will be determined from the pump tests. <br />1n addition, water level data viill be collected from the piezometers and <br />wells. This information will be used to construct a potentiometric surface map <br />for the alluvium and determine the gradients for the D Seain and E Seam aquifers <br />Task II: Surface 4later Baseline Study <br />The field effort for the surface water baseline study will involve the <br />installation of one Parshall flume on 4lilliams Creek and three crest stage gages <br />(one associated with each flume). The locations of the sites, as determined <br />during the reconnaissance visit, are shoivn on the attached map. (Based on Granby <br />Ditch and Reservoir Company's interest in placing a flume on 6lilliams Cree4: and <br />carrying out future monitoring, it is important to coordinate with the ditch <br />company to determine a mutually acceptable monitoring location and monitoring <br />device (e.g., a flume or an off-stream stilling well).) (Larry Reschke will be <br />making the initial contacts with the ditch company.) <br />An additional activity v~ill be to conduct a spring inventory of the permit <br />and adjacent area. The springs which are identified will be located on a map; <br />probable geologic source will be identified; and measurements vrill be taken of <br />flow, temperature, and specific conductance. <br />Task III: Alluvial Valley Floor (AVF) Evaluations <br />The field studies associated v~ith this task will involve the careful mapping <br />of the unconsolidated material (i.e., glacial outv~ash and streamlaid deposits) <br />3 <br />