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<br />would be to bond for an additional 10 boreholes in the exploration <br />permit to cover the possibility of twinned boreholes. According to Mr. <br />Middleton, the twinned boreholes would be located within approximately <br />10 to 30 feet of the original borehole. It is assumed that they would <br />also be located within the same drill pad as the original borehole; <br />therefore an additional pad would not be necessary. <br />CEC Response <br />A revised bond calculation has been included, which reflects the additional 10 holes <br />for twinning, and an additional two drill pads. The additional drill pad amount will <br />account for any additional dirtwork required for shifting the hole over should ground <br />conditions require additional disturbance. <br />DMG Concern <br />7) CEC states that the minimum mud pit size will be 6'x3'x4'. What will be the <br />maximum mud pit size? This information is needed so that the Division can <br />conservatively estimate the bond required for reclamation of the mud pits. <br />CEC Response <br />The anticipated maximum mud pit size will be 10'x8'x6', and should not be of <br />significance in relation to the bond amount, as this is already a conservative <br />calculation. <br />DMG Concern ' <br />8) Please describe how CEC will comply with Rule 4.21.4(7) to protect the <br />hydrologic balance. <br />CEC Response <br />Please refer to the original application, wherein CEC discussed the manner in which <br />topsoil and roadway prep would be handled, and that small water control berms would <br />be constructed along the lower edge of the drill pad if ground conditions dictate. In <br />addition to small berms if necessary, CEC may also utilize straw bales, water bars or <br />silt fencing to control water runoff from areas. However, as noted previously, CEC <br />intends to minimize the amount of disturbance <br />DMG Concern <br />91 CEC states that topsoil will be stripped from the drill pads only in the immediate <br />vicinity of the drill rig, boreholes and mud pits. The Division commends CEC <br />on its minimization of disturbance. However, a statement regarding the <br />management of drill cuttings should be included in the NOI. Specifically, state <br />how CEC will keep the cuttings off the topsoil that is not stripped from the drill <br />pad in order to protect the topsoil resource. <br />