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MINING PLAN EXHIBIT D (CONT) <br />An estimate of water needs for the mine is outlined in <br />EXHIBIT G - WATER . The water used at the mine will be for dust <br />control at the plant and on internal haul roads. On a typical <br />operation of this type 3 to 8 ac -ft per year is used. Typically <br />in a crushed rock operation the material mined has little or no <br />moisture content due to the nature of the rock. Most of the <br />precipitation that falls on the site will be absorbed by the <br />finer material before it can runoff the site. Some infiltrate <br />will occur into the underlying strata. Ponding is expected to be <br />minimal on the mine floor as the water will soak into the ground. <br />Water used at the site will be for dust control only and no <br />material washing will take place. Water used on the mine will be <br />hauled to the site from outside adjudicated sources. Initially, <br />we will purchase the water from the Town of Trinidad until a <br />closer source can be found. There will be no evaporative loss <br />off lakes since this is a dry mine, see EXHIBIT G . <br />The use of explosives will be needed at this mine to break <br />the rock up prior to processing. Tamrock Gravel LLC., will <br />contract with a Blasting Contractor to supervise the drilling and <br />blasting according to state standards. A blasting plan, based on <br />state standards, will be prepared for the mine site by the <br />contractor and will be followed. The plan will consider the <br />natural gasline that crosses the property. The gas company will <br />be consulted to determine acceptable vibrations levels and <br />distances needed to protect the line during mining. The use of <br />delays, hole spacing, stemming and charge size will be employed <br />to keep the peak particle velocities at or below state standards <br />at the property lines. Records of each blasting event will be <br />kept in the company records and available for review upon re- <br />quest. The information will include, time, date, weather condi- <br />tions and a sketch of the hole layout. The number of holes in <br />each shot, the depth of the holes, powder charge data, delay <br />timing, the number of strings, packing depth and packing material <br />will be listed in the report. A portable seismograph will be use <br />for each shot to monitor ground vibrations on the site, if <br />available. Portable powder magazines may be used to store <br />blasting material during setup for a shot but no blasting agent <br />will be stored on the site except as needed the day of the shot. <br />1 0 <br />