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New Horizon Mine Annual Hydrology Report <br />• SW -N209 is located at the inlet of the North Lateral and represents up gradient <br />condition. <br />• SW -N210 is located at an inlet of an irrigation pipe and represents the up gradient <br />condition. <br />• SW -N213 is located on Nygren Draw and represents the up gradient condition. <br />• SW -N214 is located on Nygren Draw and represents the down gradient condition. <br />• SW -N215 is located on an unnamed draw upstream of the Meehan Draw Confluence <br />and represents the up gradient condition. <br />• SW -N216 is located on unnamed draw downstream of the Meehan Draw Confluence <br />and represents the down gradient condition. <br />• SW -N217 is located on the San Miguel River upstream of the Tuttle Draw Confluence <br />and represents up gradient condition. <br />• SW -N218 is located on the San Miguel River downstream at Coal Canyon Confluence <br />and represents a down gradient condition. <br />• SS -1 is located at the toe of the backfill of the old Nucla Mine (NH1), and represents a <br />pre -mine and down gradient condition for NHN. <br />• SS -2 is located 50 yards upstream of SS -1, at the toe of the backfill of the old Nucla <br />Mine, and represents a pre -mine and down gradient condition for NHN. <br />Surface monitoring data for all sites listed above can be found in Appendix 1. <br />Ground Water <br />Ground water monitoring is briefly described below. Please see Map 2.04.7-1A for locations. <br />• GW -N47 monitors the underburden aquifer directly adjacent to the future mining area. <br />• GW -N48 monitors the Dakota coal aquifer directly adjacent to the future mining area. <br />• GW -N49 monitors the overburden aquifer directly adjacent to the future mining area. <br />• GW -N50 monitors the underburden aquifer and represents the up gradient condition. <br />• GW -N51 monitors the Dakota coal aquifer and represents the up gradient condition. <br />Page 3 <br />