2011-02-15_REVISION - C1980004 (2)

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Corey Heaps McClane Canyon Mining, UC February 15, 2011 Page 25 Page 5 of the Soil Resource Assessment describes a soils map that was compiled on a topographic base map with a 2 -foot contour interval at approximately I" = 200'. This map was not submitted with the report for the Division's review. Rather, soil boundaries are outlined on Map 4.4 -2 — SoiIs Map. The contour interval for this map is 10 feet, which is suitable for the steeper slopes, but results in a loss of topographic detail on the flatter valley floor and makes the subject feature much less distinctive. Figure 2.2 -5 — Haul Road Plan and Profile • The proposed Gob Pile Haul Road will be constructed through the landform in question as it skirts the perimeter of the proposed Coal Mine Waste Pile. The cross - sectional shape of the landform feature is shown clearly in the Profile view, between stations 12 +30 and 14 +80. Appendix W — Alluvial Valley Floor Determination ERO Resources Co oration • In the Agricultural Practices section, the report describes a water diversion system constructed "in the late 1800s at the constriction of East Salt Creek ". Photos 1 and 2 show the remains of a concrete wall located in the creek, adjacent to the landform. • The Geology section describes the feature in question as a "Landslide Deposit," concluding that "there is no obvious reason for such a large artificial embankment ". The source of the landslide material is assumed to be the deposit west of the creek and highway. • Figure I of the report shows the study area on a topographic base map with a 2' contour interval, on which the shape and dimensions of the landform are clearly visible. • On Figure 2, the geology of the landform is identified as Qls — Landslide. • Figure 4.1 -2 — Preliminary Alluvial Valley Floor Identification -- has been revised substantially with the PR -2 application. All prior versions of this map have identified the Iandform as "Man -Made Fill ", but on the proposed version, the area is identified as, "Landslide Deposit, from West side of canyon wall." Appendix J — Class III Cultural Resource Invento Grand River Institute • Site 5GF879.6, a segment of the historic Davenport Ditch, is described beginning on page 10 of this report. Portions of a 1981 archaeological analysis are quoted, which describe the construction of a ditch and cement diversion dam in the late 1890's by the Quaker Oats Co. According to the quoted text, because of accumulated silt "the dam was then dynamited and the ditch never used." This study then documents the remains of a diversion feature (Feature #1), the dynamited diversion dam (Feature #2), and a headgate (Feature #3), along with two segments of the ditch. Photos and a map of these features were not provided to the Division, but based on