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impacts to the groundwater quality and the waters downstream are not significant, although they <br />occur for a lengthy period of time. <br />WFC has developed plans for sampling overburden during mining to identify the quantity and <br />quality of deleterious material (see Section 2.04.6, Geology). <br />Naturally occurring waters in the surrounding undisturbed ground water system exhibit a high <br />degree of mineralization (see Section 2.04.7, Hydrology Description). Well yields are low. Most <br />recharge to the local undisturbed ground water system is from both the Lower Second Park and <br />the West Lateral irrigation ditches and associated laterals via seepage. This localized, artificial <br />source of ground water recharge will augment slower, natural recharge contributions during the <br />spoil renaturation process. As spoil resaturation progresses, the quality of ground water in the spoil <br />will likely approach the water quality of surrounding geologic units. <br />Mixing and the overall high degree of neutralization potential of the spoil material will <br />minimize changes in ground water quality. See following discussion on Probable Hydrologic <br />Consequences. Based on physical and chemical analyses performed on core samples taken from <br />the lithologic units to be affected by mining (see Section 2.04.6, Geology Description), a <br />classification system has been developed for these units with regard to handling during <br />operation and reclamation activities. A handling plan for those material classes identified by <br />sampling as being potentially deleterious to revegetation or the ground water quality in either <br />mining area has been developed and is presented in Section 2.05.4(2)(d), Topsoil <br />(Redistribution). <br />It is not anticipated that WFC will transfer ownership and use of any wells completed within New <br />Horizon 2 mining areas. Bore holes, shafts, wells, and auger holes will be cased and/or sealed to <br />prevent possible ground water degradation from mixing of waters of different quality within the bore <br />holes and acid or toxic surface runoff entering the bore holes. A specific plan for sealing of bore <br />holes, exploration holes, auger holes, wells, and shafts is presented in Section 2.05.6(3)(b)(v), <br />Hydrologic Reclamation Plan. <br />Ground Water Quantity <br />Typical backfilling methods largely involve the use of dozers and trucks (see Section 2.05.4(2)(c), <br />Backfilling and Grading). Replaced spoil materials exhibit greater porosities and hydraulic <br />conductivities because of increased void values, regardless of how the spoil material is replaced <br />in the pits. <br />Spoil replacement (backfilling) using methods outlined in Section 2.05.4(2)(c), Backfilling <br />and Grading, will ensure the eventual resaturation of the disturbed areas (pits), minimizing the <br />adverse effects of mining on ground water flow. The New Horizon 2 mining area is located in a <br />July 2016 (TR -74) 2.05.6(3)-2 <br />