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Ms. Erica Crosby <br />Division of Minerals and Geology <br />April 5, 2006 <br />Page 3 of 21 <br />If a portable asphalt or concrete plant is temporarily moved on site, it will be located <br />approximately as shown on revised C-3, within the limits of Phase 3. A concrete <br />plant will utilize a reclaim system with a lined settling pond to control waste water. <br />Site grading will ensure that any storm water runoff from the plant area drains to the <br />pits. Ground water will not be affected because the plants will be located within the <br />boundary of the slurry wall. Sediments, oil and grease are the only potential water <br />contaminants from these sites. No hazardous wastes will be located or created on <br />site. <br />7. Please describe all haul roads that will be utilized for the mining operation. Rule <br />6.3.3 (g) requires the applicant to specify the dimensions of any existing or proposed <br />roads that will be used for the mining operation. Any improvements necessary on <br />existing roads and the specifications to be used in construction of the new roads <br />needs to be described in the permit and included as part of the permitted acreage. <br />The applicant will also need to address reclamation of any new or improved roads <br />constructed on site. <br />The existing site access road will be widened to 24 feet and paved from the entrance <br />approximately 300 feet to the plant site. Anew permanent 24 foot wide gravel road <br />with a 4 inch gravel surface will be constructed from the end of asphalt to the <br />existing MEIII oil and gas well, and also from this point south between Phases 1 and <br />2. A 12 foot wide dirt access road will remain around the reservoir for access. <br />Roads will be graded to direct storm water runoff into the pit areas. Any additional <br />roads will be temporary, used for a specific mining phase, and will be reclaimed <br />along with that phase. See typical road cross-section on revised Exhibit C-3. <br />8. Please state how pit runoff will be diverted to the two silt ponds located on the north <br />end of the mine site. Please further explain their use, management, and how water <br />will be diverted into the silt ponds and provide any ditch or conveyor designs if <br />applicable. <br />Stormwater or dust control water from disturbed areas will be directed into the pits. <br />The sediment ponds will be constructed for the purpose of containing sediment- <br />laden water generated from the sand-washing plant. Ponds will be cleaned out <br />periodically as necessary, and fines will be mixed with overburden and used for <br />reclamation. <br />9. The applicant noted the location of topsoil piles to be stored on site. However, <br />overburden piles were not depicted on the exhibits. In accordance with Rule 3.1.9(1), <br />topsoil and overburden must be segregated and stored separately. Please revise the <br />exhibits to depict the location of all overburden piles in Phase 1, 2, and 3. <br />Topsoil and overburden needed for slurry wall construction and reclamation will be <br />stockpiled separately in piles along the site edges as shown on Exhibit C-3. When <br />placed, topsoil stockpiles will be revegetated and labeled with signs to distinguish <br />them from overburden piles. Additional overburden piles will be located within the <br />limits of disturbance or along the perimeter of the active phase. Overburden <br />removed from the Phase 1 mining area, for example, will be stockpiled as close to <br />