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B. Fish and wildlife habitat is a planned post-mining land use. The applicant has selected , appropriate plant species and distributions to benefit fish and wildlife (4.18(5)(1)). X. SUBSIDENCE CONTROL Subsidence information is included in Section 2.1.9 of the application. Information provided demonstrates the absence of renewable resource lands or structures in the permit and adjacent areas which would potentially be affected by subsidence. As a result, no subsidence monitoring is necessary, and a subsidence control plan is not required. There is a small azea of privately owned surface within the permit azea that is scheduled to be undermined in the future. The operator has committed within the application (p. 2-24) to provide written notification to surface owners at least six months prior to initiation of mining beneath their properties, as required by Rule 4.20.2. A sample notification letter is provided on page 2-25 of the application. XI. OPERATIONS ON ALLUVIAL VALLEY FLOORS Sufficient information was provided by the applicant to determine that the East Salt Creek Valley within and adjacent to the permit azea is an alluvial valley floor (AVF), based on the extent of alluvial deposits, and potential for irrigation as demonstrated by the existence of irrigated hayland in the mine vicinity. The alluvial valley floor assessment is presented on pages 4-4 through 4-9 of the application, and the extent of the AVF, and nature of the agricultural practices on the AVF is depicted on Figure 4.1-2. Approximately 1 acre of undeveloped rangeland AFV was disturbed by mine road and office facilities construction. Less than 1% of the total azea of alluvial valley floor within aone- halfmile radius of the confluence of McClane Canyon and East Salt Creek would be disturbed by the operation, and there will be no disturbance to irrigated cropland. The following specific findings aze required. A. The Division fmds that activities proposed by the applicant will not interrupt, discontinue, or preclude farming on the alluvial valley floors that are irrigated or naturally subirrigated (4.24.3(1)). The proposed activities will directly affect only undeveloped rangelands which are not significant to farming. B. The proposed activifies will not materially damage the quantity or quality of water in the surface or ground water system described above (4.24.3(3)) and 2.06.8(5)(a)(ii)). No adverse effects to water quantity or quality were projected when the initial permanent program permit was issued, and monitoring to date has supported this projection. The reader is referred to the AVF section of the April 16, 1985 findings document for detailed discussion. C. The proposed activities will comply with the requirements of the Act and the Regulations with respect to alluvial valley floors (2.06.8(Sxa)(iii)). 24