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West Elk Mine <br />• required by state regulations and under the jurisdiction of the Colorado Department of Public <br />Health and Environment (CDPHE). An as-built construction description of the building housing <br />this system is provided in Exhibit 68. MCC has the capability to expand the water treatment plant, <br />if needed. Capacity can be readily expanded by adding additional components should the need ever <br />arise due to increased needs at the mine. <br />• <br />• <br />Demand for water at the mine is expected to increase in the future. With the expected 8.2 <br />million tons (plus) per yeaz production at West Elk Mine, MCC conservatively estimates that as <br />much as 300 acre feet per year but a likely maximum of 150 acre feet per yeaz (based on 250 <br />work days) of fresh water will be required. Prior to installation of the longwall, annual coal <br />production was 600,000 tons per year. At this rate, water needs were about 65 acre-feet per year. <br />The Annual Hydrology Reports contain specific data on the amount of water consumed annually <br />at the mine since 1982. <br />Table 33 <br />Summa of Mountain Coal Com an 's Water Ri hts for the West Elk Mine <br />Source of Water Water Ri hts <br />Mt. Gunnison Pi eline 15.00 cubic feet er second <br />Ton Bear Pi eline 0.9 cubic feet er second <br /> <br />Walter Gallob Ditch 0.75c cubic feet er second <br /> <br />Sedimentation Ponds: <br />MB #1 13.66 acre-feet <br />MB #2 9.61 acre-feet <br />MB-#3 0.23 acre-feet <br /> <br />Freshwater Ponds: <br />FW #1 9.98 acre-feet <br />FW #2 9.98 acre-feet <br /> <br />Mt. Gunnison Tunnel 0.49 feet er second <br />Notes: 1. These facilities have not et been constructed <br />Water used at West Elk Mine comes from adjudicated water rights owned by MCC. Table 33 <br />summarizes MCC's rights. The rights aze used according to Colorado Water Laws administered by <br />the District No. 4 Water Commissioner. MCC also has available non-tributary water rights and <br />storage water rights for sumps maintained underground. <br />Raw or untreated water is pumped underground from the freshwater pond (FW-1) by pumps, <br />located in the water treatment plant. The water distribution system at West Elk Mine contains <br />several major components. They include the raw water intake gallery and pumps, cast or steel <br />utility piping, fresh-water storage pond (FW-1), water treatment plant, mine water pumps, a 1.2 <br />million gallon mine water storage tank, freshwater pump, potable water tank, and fire suppression <br />systems. A second freshwater pond (FW-2) has not yet been built. However, its construction is still <br />considered to meet future storage needs. <br />1.05-19 Revised June 7005 PRIG <br />