Laserfiche WebLink
Srins <br />There are no definable springs at the New Horizon 2 mining area. <br />Ground Water Suitability <br />Present Ground Water Use. Ground water rights within the immediate region (2 mile radius) <br />around the New Horizon Mine are presented in Peabody Attachment 16-1. In all, 29 ground water <br />rights have been identified in the vicinity of the New Horizon 1 and New Horizon 2 mining areas. <br />Of the 29 wells, 27 have intakes too deep to be affected by the pit pumpage induced drawdowns <br />in the overburden aquifer. Two righted wells W-009 and W041 have intakes close to the elevation <br />of the bottom of the mine pit. The wells are located approximately 2,300 feet east of New Horizon <br />2. At the eastern boundary of New Horizon 2, mining will only extend 10 feet below the water table. <br />Therefore, drawdown impacts to these wells are expected to be small. The wells are righted for <br />irrigation water use. <br />Potential Ground Water Use. This section will evaluate the use potential of the local, shallow <br />ground water aquifers by comparing the water quality against domestic drinking water standards, <br />livestock drinking water standards and irrigation use standards. The shallow aquifers will also be <br />evaluated in terms of water yield potential. <br />In comparison to domestic drinking water standards, all aquifers at the New Horizon 2 mining area <br />exceeded at least two of the drinking water standards and some exceeded as many as seven of <br />the standards (refer to Peabody Tables 7-32A and 7-326). The most frequent domestic drinking <br />water standards exceeded were iron, manganese, ammonia and sulfate. Well GW-N16, an <br />underburden monitoring well in the New Horizon 2 mining area had the best overall water quality <br />and only exceeded the pH and ammonia standards. <br />The Dakota coal aquifers and the overburden aquifer in the New Horizon 2 mining area yielded <br />ground water that exceeded one or more of the livestock drinking water standards. The coal <br />aquifer in the New Horizon 2 mining area has poor quality with regard to agricultural water use. <br />Revised 25 Ju12002 2.04.7-18 <br />