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2.0 APPROVED HYDROLOGICAL MONITORING PROGRAM <br />I Table 1 summarizes various approved monitoring sites and monitoring requirements. They are <br />shown on Plate 1. For New Horizon 1 Mine, these sites and the monitoring program are the same <br />as those approved under the permit previously held by Peabody Coal. For New Horizon 2 Mine, the <br />sites are based upon recommendations made by Greystone Consultants and approved by DMG. <br />Sea Section 2.1. <br />1 The approved plan for New Horizon 2 Mine includes the elimination of several surface water stations, <br />and the addition of others. Groundwater will also be monitored through a select set of existing wells <br />I and installation of new wells. Plate 1 shows the locations of surface stations and wells for the New <br />Horizon Mine 2 monitoring program. Modifications to the existing monitoring locations for surface <br />and groundwater are discussed below. <br />1 2.1 Surface Water Monltoring -New Horizon 1 Mlne <br />-1 The total number of surface water monitoring locations at New Horizon 1 is twelve (12) including six <br />(6) NPDES discharge monitoring points and three (3) spoil springs. The monitoring schedule and <br />I parameters being monitored are shown in Table 1. <br />^ 2.2 Surface Water Monltoring -New Horizon 2 Mlne <br />J The total number of surface water sampling locations is five (5). Calamity Draw contains three (3) <br />stations while the remaining two stations are located on the West lateral Ditch. <br />' Stations SW-N102 is located on a Vibutary of Calamity draw and will remain as a monitoring point <br />for water leaving Pond 007. This will also act as the NPDES 007 discharge monitoring point for <br />Pond 007. The two new stations, SW-N108 and SW-N109 are located on Calamity Draw. The <br />' upsVeam station, SW-N108 is located just west of Lincoln SVeet as it flows from under the road. <br />This station will define water quality and quantity before it enters the area potentially influenced by <br />the mine. SW-Nt09 is located on Calamity Draw west of the mine permit boundary but east of the <br />Nucla waste water lagoons. This station will define the water quality and quantity as it leaves the <br />site but before it is influenced by the waste water lagoons. <br />t Existing stations SW-N104 and SW-N105 will remain in place on the West Lateral Ditch. These <br />two stations will monitor flow and water quality of the ditch system as it enters the upstream area <br />' of the mine and as it leaves the mine area. <br />2 <br />