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with the surface left in a roughened condition. The A and B horizons will then be replaced over the subsoil material. With the exception of small and temporary diversions of overland flow of water around new roads, drill pads, and support facilities (such as staging areas or lay- down areas), no ephemeral, intermittent or perennial stream will be diverted during coal exploration activities. Overlandflow ofwater will be diverted in a manner that (a) controls erosion; (b) to the extent possible using the best technology currently available, prevents additional contributions of suspended solids to stream flow or runoff outside the exploration area; and (c) complies with Colorado Coal Mining Regulation 4.05.3 and all applicable State or Federal requirements. Coal exploration will be conducted in a manner which minimizes disturbance of the prevailing hydrologic balance and which includes the use of sediment control measures such as those listed in Colorado Coal Mining Regulation 4.05.5 or sedimentation ponds which comply with Colorado Coal Mining Regulations 4.5.05 and 4.05.9. " `Acid forming materials ", as defined in Colorado Coal Mining Regulation 1.04(2), and "toxic forming materials ", as defined in Colorado Coal Mining Regulation 1.04(139), will be handled and disposed of in accordance with Colorado Coal Mining Regulation 4.05.8 and 4.14.3. " 9. Section 6.3.2 (Reclamation) is amended to add the following two paragraphs: All facilities and equipment will be removed from the exploration area promptly when they are no longer needed for exploration, except for those facilities and equipment that the Division determines to remain to provide additional environmental quality data, reduce or control the on-or off-site effects of exploration activities, or facilitate future surface coal mining operations by the person conducting the exploration under an approved permit. Revegetation of areas disturbed by coal exploration will be performed by Western Fuels-Colorado or its agent. Revegetation will be carried out in a manner tJzat encourages prompt vegetation cover and recovery of productivity levels compatible with the approved post-exploration land uses of cattle grazing, wildlife habitat, and recreation. All disturbed lands will be seeded or planted to the same seasonal variety native to the disturbed area. The vegetative cover will be capable of stabilizing the soil surface in regards to erosion. 10. Section 6.3.2 (Reclamation) is further amended to specify the seed mixture as follows: