2010-12-09_GENERAL DOCUMENTS - C1982057

Home Browse Search

Temple Pond No. 2 as a stock water impoundment. S-5 has been observed to flow on only three occasions; in the spring of 1983, 1997 and 1998. Olson Spring is an adjudicated domestic water right. Conductivity of the Olson Spring has displayed a decreasing trend. Two additional native springs occur along Hubberson Gulch upstream from the potential influence of mining in the original permit area, but downstream from mining activity in the south extension area. 5-49 was located in the 016 Gulch directly above the Pond 016 Site. The spring was developed with a4 inch PVC pipe that flowed into a metal stock tank. It was sampled between August 1997 and August 2001, when it was abandoned and subsequently mined through. S-7 serves as the non-potable water supply for the Smith Ranch on Hubberson Gulch in Section 21. Sampling was discontinued in 1990 but reinitiated in 1999, due to its location downstream from south extension area mining. Monitoring was conducted between 1999 and 2005, when discontinuance of monitoring was approved in TR-52. TDS values peaked in 1997, and decreased in subsequent years. A discussion of projected impacts can be found in Section III F. - Assessment of Probable Hydrologic Consequences of Mining. SCC performs a spoil spring survey following snowmelt each year, with locations of springs of greater than 5 GPM added to the monitoring program, and with spring location and monitoring data to be included in subsequent Annual Hydrology Reports. One full-suite sample and field parameters samples are collected each year. Surface Water The applicant will conduct monitoring of surface water in a manner approved by the Division. The monitoring plan was submitted under 2.05.6(3)(b)(iv) and can be found in Appendix 15-3A of the permit application package. A number of amendments to the surface water parameter list and analytical techniques for certain parameters were approved in TR-69, in 2010. The hydrologic description of the mine area is provided in Tab 7 of the permit, and the hydrologic monitoring plan is addressed in Tab 15. Hydrologic protection, probable hydrologic consequences, and the hydrologic reclamation plan are presented in Tabs 16, 17, and 18, respectively. Surface water at the Seneca II-W Mine lies within two watersheds. The primary affected area lies within the Dry Creek Drainage and is drained by Hubberson Gulch and an unnamed tributary to Dry Creek (the Pond 005 Gulch). A small portion of the eastern part of the permit area drains to Sage Creek. Both creeks empty into the Yampa River near Hayden. Both Dry Creek and Sage Creek exhibit intermittent to Seneca II-W Findings Document 34 C1982057 Permit Renewal No. 5 December 9, 2010