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-11- <br />The operation is in compliance with the requirements of this section. <br />VI. Hydrologic Balance: Ground Water - Rules 2.04.5, 2.04.7, <br />Information on ground water can be found in Section I, Water Information; <br />Nppendices A and I; and Plate 1, Water Elevation Control Map in the <br />application. A detailed desscription of the ground water resources and the <br />impacts of mining on ground water can be found in Section IX of this document, <br />titled "Probable Hydrologic Consequences of Mining and Cumulative Hydrologic <br />Impacts Study". <br />The Walden Coal Company leas installed nine monitoring wells in the alluvium of <br />Mann Uraw. These wells are primarily used to measure fluctuation in alluvial <br />water levels along three stream transects. These transects are located above, <br />below and in the middle of the area which may be impacted by the Bourg Mine. <br />One of the upstream wells, 33C, and one of the downstream wells, 30A, have <br />been monitored for water quality. Since these monitoring wells are located <br />downgradient of the bedrock strata and within the alluvium of Mann Draw, they <br />will provide adequate monitoring of the effects of mininy on alluvial ground <br />water for the following parameters: sulfate, total iron, total manganese, <br />calcium, sodium, caroonate, bicarbonate, magnesium, potassium, aluminum, <br />copper, selenium, fluoride, nitrate, orthophosphate, pH, conductivity, TDS, <br />chlorine, boron, arsenic, barium, cadmium, chromium, lead, mercury, nickel, <br />and zinc. <br />The operation is in compliance with the requirements of this section. <br />VII. Alluvial Ualley Floors - Rules 2.06.8 and 4.24 <br />The Division has reviewed the alluvial valley floor study prepared by Leonard <br />Rice Consulting lJater Enyineers and included in Appendix I of the application. <br />Two areas were identified within or adjacent to the mine that met the <br />yeomorphic criteria of alluvial valley floors. Deposits of unconsolidated <br />alluvial materials were identified along Mann Draw and at the confluence of <br />Mann Draw and the Canadian River (see i~lap, Figure I-3 and Plate 1-B) of the <br />permit application. <br />In Mann Draw, there is insufficient water to support agricultural activities. <br />The stream channel of the draw is small and discontinuous in many sections. <br />There is no existing or historic flood irrigation in the draw. A regional <br />flood irrigation study was conducted in North Park to assess whether flood <br />irrigation was feasible. Both the Canadian and Michigan Rivers and their <br />tributaries were considered in the study (Plate 22 of the permit <br />application). The results of the study show that irrigated watersheds in the <br />region generally flow toward the southwest and have maximum basin elevations <br />from 10,880 to 12,560 feet. Mann Draw is oriented northeast and has a maximum <br />elevation of 8,340 feet. The higher elevated watersheds receive greater than <br />L5 inches of annual precipitation, while Mann Draw receives approximately 10 <br />inches of precipitation annually. <br />