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Monitoring Plans for Evaluation of Hydrologic Consequences - OMI 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 momtonng program serves as an integral part of OMI's 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 grotmd water, and the overall effects of mining and reclamation activities on the hydrologic balance. Water quality parameters 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 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 are 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 identification 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 levek, movements, and recharge/discharge/storage characteristics. The baseline hydrologic information forms the base 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, 2 mine water discharges, and 12 stream locations s ,.,,,.,~„~Pd as follows: Site Designation Site Description Borings/Seems SP-8 Oliver Spring SP-9 Lower Spring Grotmd Water Wells Well SG 1 Well SG3 Well EG7 Well B-6 Well BG 1 Well H-10 Well EG14 _ Well EG 15 Mine Water Discharge Outfall 011 Chrtfall 015 Streams Site G 1 Site HN-1. Site S-1 Site S-2 Site E-1 Site E-2 Rollins SS -Sanborn Geek D-Seam-Sanborn Geek Alluviutn/Colluvium -Elk Geek B-Seam - Upper Beaz Geek Alluviutn/Cnlluvium - Beaz Geek B-Seam -Upper Hubbard Geek Alluviutn/Colluvitun -Elk Geek Alluvium/Colluvium -Elk Geek Sanborn Geek Mute Discharge Elk Geek Mine Discharge Coal Gulch Lower Hawks Nest Geek Upper Sanborn Geek Lower Sanborn Geek Lower Elk Geek Upper Elk Geek