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III III I IIIIIIIII III D c Date:12/11/2001 <br />drinking water. As long as the Colorado Cq=operative Company continues to operate the ditch <br />(- system, there will rerrtain a sufficient supply of water well suited for domestic (drinking), agricultural <br />• and livestock use. <br />jAPPROVED HYDROLOGICAL MONITORING PROGRAM <br />~j (-Table 2.04.7-1 summarizes various approved monitoring sites. They are shown on Map 2.04.7-1. <br />For New Horizon 1 Mine, these sites include those approved under the permit previously held by <br />Peabody Coal and later revised by Western Fuels-Colorado. For New Horizon 2 Mine, the sites are <br />based upon recommendations made by Greystone Consultants and subsequent revisions requested <br />by WFC. Attachment 2.04.7-1 includes Greystone's report. The monitoring plan will be adequate <br />for the Garvey and Burbridge lease included in the permit boundary. <br />Map 2.04.7-1 shows the locations of surface stations and wells for the New Horizon Mine 2 <br />monitoring program. Modifications to the existing monitoring locations for surface and groundwater <br />are discussed below. All data v~ill be reported in the annual hydrology report. <br />~~ <br />Surface Water Monitoring -New Horizon 2 Mine The total number of surface water sampling <br />• locations is five. Calamity Draw contains three stations while the remaining two stations are located <br />on the West Lateral Ditch. <br />Stations SW-N102 is located on a tributary of Calamity draw and v~ill 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 stations, SV~N108 and S1/v<N109 are also located on Calamity Draw. The <br />upstream station, SV~N108 is located just west of Lincoln Street 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-N109 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. Station SV~,~N101 was dropped from the <br />monitoring program in the Calamity draw as Stations SI/V-108 and Sl/~109 replaced its functions. <br />Surface stations SW-N104 and SW-N105 monitor the West Lateral Ditch. These two stations <br />monitor flow and water quality of the ditch system as it enters the upstream area of the mine and <br />11 (Re~~sed ¢s~ 2.04.7-36 <br />J <br />