PERMFILE50415 - Laserfiche WebLink

Home Browse Search

EXHIBIT 2.05-E7 Monitoring Plans for Evaluation of Hydrologic Consequences - OMLLC currently maintains, and will continue, a comprehensive program to monitor surface and groundwater quality and quantity for the duration of the proposed mining and reclamation operations. The monitoring program serves as an integral part of OMLLC's efforts to protect the hydrologic balance by providing an accurate and timely method of identifying and quantifying any possible concerns with respect to surface and ground water resources. The hydrologic monitoring plan provides for a frequency and distribution of both baseline and operational monitoring data collection adequate to identify and document baseline conditions and trends and fluctuations in the quantity and quality of surface water, the level and quality of ground water, and the overall effects of mining and reclamation activities on the hydrologic balance. Watet quality parameters include field measurements fox pH, specific conductance, and temperature and laboratory measurements for general water quality characteristics such as TSS, TDB, major ions, and selected trace metals. Both surface and ground water quality samples axe collected, labeled and transported to a qualified analytical laboratory for analyses. Proper sample collection, preservation, handling, and storage methods will be utilized at all times to preserve the integrity of the samples and assure the validity of the analytical results. The monitoring data and resulting evaluations aze used to identify any potential problems and develop any necessary supplemental mitigation measures in a timely manner. The baseline hydrologic information presented in Section 2.04.7, Hydrologic Description, of this permit application includes identiftcation of surface drainages and general flow characteristics; information on corresponding peak flows and annual runoff volumes; identification of ground water aquifers; and a general description of aquifer characteristics including ground water levels, movements, and recharge/discharge/storage characteristics. The baseline hydrologic information forms the basis and serves as a reference for the ongoing hydrologic monitoring program. The operational monitoring network consists of 2 spring/seep locations, 7 ground water wells, 1 mine water discharge, and 12 stream locations summarized as follows: Site Designation Site Description Borings/Seeps SP-8 Oliver Spring SP-9 Lower Spring Ground Water Wells Well SC-1 Rollins SS -Sanborn Creek Well SC-3 D-Seam -Sanborn Creek Well B-6 B-Seam -Upper Bear Creek Well BC-1 Alluvium/Colluvium -Bear Creek Well H-10 B-Seam -Upper Hubbard Creek Well EC-14 Alluvium/Colluvium -Elk Creek Well EC-15 Alluvium/Colluvium -Elk Creek Mine Water Dischame Outfall 015 Elk Creek Mine Discharge Streams Site C-1 Coal Gulch Site HN-1 Lower Hawks Nest Creek Site S-1 Upper Sanborn Creek Site E-1 Lower Elk Creek Site E-2 Upper Elk Creek Site B-1 Lower Bear Creek Site B-2 Mid Beax Creek Site B-3 Upper Bear Creek Site H-1 Lower Hubbard Creek Site NF-1 North Foxk above Sanborn Creek Site NF3 North Fork at Fire Mountain Headgate USGS Gage North Fork upstream of Somerset TR-45 1 Rev. Feb 2004