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i _iiiiiuiiiiiiiiiiii <br />I Doc Date:12/11/2001 <br />This is the 1987 Annual Hydrology Monitoring Report for the <br />Somerset Mine. The property is located 11 miles east of Paonia <br />along State Highway 133. The mine status is that of temporary <br />cessation. The portals were sealed during May and June of 1986. <br />' Elk Creek, Bear Creek, and Hubbard Creek flow across the <br />property to the North Fork of the Gunnison River (see Map 2). Elk <br />Creek, which drains the eastern portion of the property, has <br />intermittent, seasonal flow. Bear Creek is an ephemeral stream, <br />which drains the central portion of the mine holdings. Hubbard <br />Creek is a perennial stream which drains the western portion of <br />the reserve. Peak flows occur during snowmelt runoff. <br />J During 1986, Kaiser submitted a water management plan to <br />replace the original, approved water inflow study (Permit No. C- <br />81-022). The objectives of this program are to gather Hubbard <br />Creek baseline flow and quality data and water inflow rates into <br />the sealed mine workings. The monitoring stations for this <br />program are: <br />H-1 Surface water station located along Hubbard Creek just <br />below the culvert at the former fan site. This station <br />continues to provide stream flow and quality baseline <br />data. <br />H-10 Groundwater well located at previous upper substation's <br />site along Hubbard Creek. This station monitors water <br />inflow rates and water quality into the sealed mine <br />J workings. <br />B-6 Former power hole located along Bear Creek used as <br />groundwater well to monitor water inflow rates and <br />quality in Three Dip mine area. <br />' The following sections of this report describe the methods <br />and results of the monitoring activities at the Somerset Mine <br />' site. <br />