2011-07-22_REVISION - C1981019 - Laserfiche WebLink

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Colowyo, C1981 -019, PR3 adequacy No. 3 22 July 22, 2011 5. According to Rule 2.06.8(3)(b)(iii), mapping of all lands subject to agricultural activities, showing different types of agricultural lands and measurements of vegetation terms of productivity and type, is required. In the Land Use Map 17, it shows that downstream of Collator Gulch, north of the permit area there is some Cropland. In the Vegetation Map 4C (Sheet 1 of 11) it shows that the same area is Bottomland. Looking at the Bottomland Vegetation Information outlined in Section 2.04.10, page 61 of the permit application, describes Bottomland vegetation to be comprised of sagebrush, mountain shrub and grasslands Does the Bottomland have agricultural significance? CCC's response is adequate 6. The Division requests that an alluvial monitoring well he installed downstream in Collom Gulch, north of the permit area and Highway 32,. This area is a documented alluvial valley floor according to the OSM 1985 Reconnaissance Map, and because of its close proximity to the permit area it would be beneficial to have baseline data and long term monitoring throughout the life of mine. According to Rule 4.24.3(3), surface coal mining and reclamation operations shall not cause material damage to the quality or quantity of water in surface or underground water systems that supply alluvial valley floors. According to Rule 4.24.4(1), an environmental monitoring system is required on all alluvial valley floors through Phase III bond release. CCC's response is adequate. 7. At this point, the Division does not have adequate information to make a determination on the presence or absence of AVF's. Once the questions above are adequately addressed, we will make a determination as required by Rule 2.06.8(3)(c). Additional information may be needed if we make a positive determination that an AVF does exist downstream in Cullom Gulch. The Division did not need a response from CCC. DRMS will make this determination. Rule 2.10 Maps I. On Map 20C Sheet 2. Pre- Mining and Post- Mining Cross Sections. Section H -H' trmsects the location of the temporary spoil pile. Please depict the outline of the Temporary Spoil Pile on this Cross section. 2. On Map 20C Temporary Spoil Pile Design, please incorporate the estimated phased construction of the pile. by year. in the Plan and Section views, and show the Little Collom Sump on Section A-A' and the Plan View. On Maps 2913, 41 B and 46, disturbance due to construction and operation of the Little Collom Suntp is not shown. Please revise these maps to include the Sump area. 4. On Exhibit 7 Item 26 Figure I. the font labeling the spillway and slopes on Sections A -A' and B -B' is too small to read. Please utilize a larger font size.