2010-11-30_APPLICATION CORRESPONDENCE - C2010088 (2)

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Corey Heaps CAM - Colorado, LLC November 30, 2010 Page 26 109. What has been the past management practices and/or grazing use of the rangeland areas in the permit, particularly with the regard to the irrigated drainage wetlands? Are there special management practices or value to the landowners? 110. In reference to 2.06.8(3)(b)(iv), has irrigation or subirrigation been used to enhance production of agriculturally useful vegetation? Have the irrigated wetland areas been historically harvested for hay or otherwise managed differently from adjacent areas based on their enhanced production of agriculturally useful vegetation? 111. Based on 2.06.8(3)(b)(vi), an analysis of a series of aerial photographs, including color infrared imagery flown at a time of year to show any late summer or fall differences between upland and valley floor vegetative growth and of a scale adequate for reconnaissance identification of areas that may be alluvial valley floors need to be submitted. ERO's report states they used an aerial photo from 1937 and a review of current aerial photos. Please describe the results of the aerial photos as they relate to AVF determinations. 112. 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. Rule 2.10 Maps 113. On Map 10, the Permit Boundary is not shown. Please add the Permit Boundary. 114. The typical section for Haul Road #1 shown on Map 15 does not portray the proposed surfacing materials and thicknesses as does the Haul Road #2 section. Please revise the graphic to include materials and thicknesses proposed to surface Haul Road #1. 115. Map 21 provides two sections (A -A' and B -B') for the rail spur. Please revise Map 21 to include a typical section which shows the types of materials and thicknesses thereof proposed for construction of the rail spur embankment. 116. Map 21 illustrates the profile of the proposed rail spur and loop. The location of the proposed bridge spanning Reed Wash is not shown. Please add this feature to the rail spur profile. Rule 4.03.1 Haul Roads 117. Rule 4.03.1(3)(c) requires that the road widths for haul roads shall be appropriate for the anticipated volume of traffic and the nature and speed of vehicles to be used. In the second paragraph of Section 2.05.3(c) and on Map 15, Haul Road #1, which is 0.58 miles