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to confirm that the disturbance to the hydrologic balance within and adjacent to the permit azea is minimized. Stipulation 5 requires the inclusion of two alluvial monitoring wells on the West Fork of Goodspring Creek. Support for the requirement to monitor alluvial wells above and below the South Taylor Mining disturbance is found at Rule 4.05.13(1)(c) as follows: When surface or underground mining activities may affect ground water systems on or off the permit area, ground water levels and ground water quality shall be periodically monitored. Monitoring shall include measurements from a sufficient number of wells or other ground water sources as approved by the Division and mineralogical and chemical analyses of aquifer, overburden, and spoil that are adequate to reflect changes in ground water quantity and quality resulting from those activities. Monitoring shall be adequate to plan for modification of surface or underground mining activities, if necessary to minimize disturbance of the prevailing hydrologic balance. As previously noted by the Division and confirmed by Colowyo, ground water in the shallow alluvial aquifers of Good Spring Creek could be marginally impacted by surface mining activities at South Taylor. Monitoring of the stream segment is necessary to detect the extent of impact. This monitoring allows the Division to ensure compliance with the general requirements as stated in Rule 4.05.1(2) as stated below. Changes in water quality and quantity, in the depth to ground water, and in the location of surface water drainage channels shall be minimized so that the approved postmining land use of the permit area is not adversely affected. In addition to the general hydrologic monitoring requirements, the alluvial valley floor requirements of Rule 4.24 aze applicable. Portions of the Good Spring Creek valley within and adjacent to the permit area, downstream of existing and proposed future operations aze currently flood irrigated. Ranchers grow pasture grasses for hay and livestock forage production in the flood irrigated fields. Numerous irrigation diversions (Map 17) exist on Goodspring Creek immediately down-gradient of where the West Fork Good Spring Creek flows into the main channel. A few wells and springs located along Goodspring Creek are being used for stock watering. Due to the presence of flood imgation along portions of the Goodspring Creek drainage (see Map 17), as well as sufficient water for sub-irrigation, Good Spring Creek valley deposits mapped as Qa on Map 11 A, extending from the West Fork Good Spring Creek confluence downstream for the entire length of the valley have been found by the Division to be alluvial valley floors. When an area is designated as an alluvial valley floor, the Division is required to make a finding on material damage. Due to the predicted increase in total dissolved solids to levels in excess of the material damage suspect level for salinity due to mining