PERMFILE117109 - Laserfiche WebLink

Home Browse Search

EXHIBIT 2.05-E7 Monitoring Plans Eor 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 pan of OMLLCs efforts to protect the hydrologic balance by providing an accurate and timely method of identifying and quantifying anypossible 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. Water quality parame[ers include field measurements for pH, specific conductance, and temperature and laboratory measurements for general water quality characteristics such as TSB, TDB, major ions, and selected trace metals. Both surface and ground water quality samples are collected, labeled and transposed to a qualified analy[ical 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 analy[ical results. The monitoring data and resulting evaluations aze used to identify any potential problems and develop any necessarysupplemental mitigation measures in a timelymanner. The baseline hydrologic information presented in Section 2.04.7, Hydrologic Description, of this permit application includes identification of surface drainages and general flow characteristics; infomtation on corresponding peak flaws 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, 8 ground water wells, 1 mine water discharge, and 12 stream locations summan~ed as follows: Site Designation Site Description Borings/Seems SP-8 Oliver Spring SP-9 Lower Spring Ground Water Wells Well SG 1 Rollins SS -Sanbom Creek Well SG3 D-Seam- Sanbom Creek Well B-6 B-Seam -Upper Bear Creek Well BG 1 Alluvium/Colluvium -Bear Creek Well H 10 B-Seam -Upper Hubbard Creek WellEG14 Alluvium/Colluvium-E1kCreek Well EG 15 Alluviutn/Colluvium -Elk Creek Well B -Seam B -Seam -Somerset Mine workings Mine Water Discharee Outfall 015 Elk Creek Mine Discharge Streams Site G 1 Coal Gulch Site HN 1 Lower Hawks Nest Creek Site S-1 I:pper Sanborn Creek Site E-1 Lower Elk Creek Site E-2 Upper Elk Creek Site B-1 Lower Bear Creek Site B-2 Mid Bear Creek Site B-3 Upper Bear Creek Site H-1 Lower Hubbard Creek Site NF-1 North Fork above Sanbom Creek Site NF-3 I~TOrth Fork at Fire Mountain Headgate USGS Gage North Fork upstream of Somerset TR-50 1 Revised Febmary 2005