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• the ten-acre minimum size criterion; therefore, they are not an alluvial valley floor. The Mountain Coal Company study identified a much larger body of alluvium downstream from Somerset, Colorado. Areas currently supporting agriculture have been identified within Sections 13 and 14, T135, R91W, associated with the North Fork of the Gunnison River. Alluvium in Section 18, T13S, R90W (1.3 miles downstream of Bear No. 3) and Sections 13 and 14, T13S, R91W (2.5 to 4 miles downstream) meet the criteria of alluvial valley floors. The alluvial valley floor probably continues downstream; however, no determination has been made for the North Fork valley between Section 14, T13S, R91W and Section 29, T13S, R91W, (2.5 to 6.5 miles downstream) because it will not be impacted. The Division is required to make specific written findings regarding the effect of mining upon any AVFs within the permit and adjacent area pursuant to Rule 2.06.8. The AVF is not within the mine permit area, and will not be physically disturbed by the mining activities. No impacts to the AVF are anticipated. 1. The Division fords that the surface coal mining operations would not intenvpt, discontinue, or preclude fanning on the alluvial valley floor • pursuant to Rule 2.06.8(5)(a)(i)(A)(I). All surface disturbances associated with the Bear Mine are located more than a mile upstream of the alluvial valley floor and would not affect agricultural activities on the alluvial valley floor. The alluvial valley floor would not be undermined by the proposed operations. 2. Pursuant to Rule 2.06.8(5)(a)(i)(A)(I)), the Division fords that the proposed surface coal mining operations would not materially damage the quantity and quality of water in surface and ground water systems that supply this water to alluvial valley floor. 3. The Division fords that surface coal mining and reclamation operations will be conducted to preserve, throughout the mining rechmration process, the essential hydrologic functions of the alluvial valley floor pursuant to Rule 2.06.8(5)(a)(iii). No change in the quantity of water available to alluvial deposits adjacent to the North Fork of the Gunnison River is expected to result from mining activities by Bear Coal Company. No diminution in surface water runoff from the permit area is expected to occur; therefore, no decrease in the flow of the North Fork of the Gunnison is expected. The undisturbed land overlying the Bear mine workings should not be significantly impacted by mining; therefore, no impacts • to the surface water system are anticipated. Surface runoff from the eight-acre disturbed area of the Bear No. 3 Mine is expected to increase during active mining due to the low infiltration capacity of the roads and parking areas at the 33