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- 9 - acreage anounts to less than tvo-tenths of a percent of the area contained within the `funger Canyon Drainage (5,08 acres), and one one-hundreth of a percent of the total drainage area of East Salt Creek above the confluence with Hunger Canyon (67,228 acres). Both ;funger and McClane Canyons (42.7 acres) will only affect six-hundreths of a percent of the drainage area of East Salt Creek. As indicated cumulative impact on flow in East Salt Creek as- a- result o€ -the--- - -- -- operations at McClane and Munger Canyons will be relatively insignificant. all flows occurring outside of the disturbances. will be routed around them and returned to the drainage. Runoff produced from the disturbed areas will be contained in sedimentation ponds for a sufficient enough time to meet NPDES and Mined Land Reclamation effluent standards, and will then be released into tfie drainage. For the sane reasons eater quality in East Salt Creek will be minimally af- fected. Because the surface disturbance will consist primarily of road and portal development most of the impact will consist of an increase in suspended sediment concentrations. The sedimentation ponds are designed to reduce the sediment concentration to acceptable levels before release into the streams. The hunger Canyon operation will mine the same coal zone as the McClane Canyon mine. For the first permit term the Hunger operation when reopened will not advance into the zone of saturation that is projected by the applicant on drilling information. Neither mine is expected to have a significant impact on ground eater during the first permit tern. There will be no cumulative ef- fect on any aquifers of regional extent as a result of mining at these loca- tion. The projected development of the PfcClane Canyon and Munger Canyon Mine work- ings indicates further impact on ground and surface water in the future. Mun- ger Creek, Buniger Canyon, Stove Canyon and a portion of the East Salt Creek valley floor will be undermined. Prior to issuance of a permit to mine into these areas it will be necessary to determine the absence or presence of AVF's in these canyons, and to predict the effect of mining on any AVF's identi- fied. These determinations will occur in future permit applications. Mining will progress into the projected saturated zone of the coal seam in future permit terms. The recharge area of the Cameo seam at East Salt Creek will also be impacted. In subsequent permits, geologic and alluvial monitor- ing sites will have to be established to adequately monitor the effects of mining on geologic and alluvial ground water quantity and quality. _ After mining is completed, all portals will be sealed and disturbances will be backfilled, graded, topsoiled and revegetated. In this reclaimed situation the hydrologic characteristics of the disturbed areas will be restored to nearly pre--wining conditions. The assessment of the probable cumulative impacts of all anticipated coal min- ing in the general area on the hydrologic balance has been made by ClLRD, and OS:! and the operations proposed under the application have been designed to prevent damage to the hydrologic balance outside the prooosed permit area,