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completed in May 2010. A subsequent memorandum was written based on the Collom project <br /> (PR-03) on December 1, 2011. These documents are available for inspection at the offices of <br /> the Division. Furthermore, the Division determined that the changes to the Collom project <br /> proposed with PR-04 reduce the potential for impacts on the hydrologic balance on and adjacent <br /> to the Colowyo Mine permit boundary (compared to the project proposed with PR-03). <br /> In the past, the Division has found that the operations proposed under the Application have been <br /> designed to prevent material damage to the hydrologic balance outside the proposed permit area <br /> (Rule 2.07.6(2)(c)). The Division is in the process of updating the 2010 version of the "Yampa <br /> River Cumulative Hydrologic Impact Statement." This update will include an analysis of recent <br /> data from water quality sampling of the Yampa River and tributaries potentially impacted by the <br /> Colowyo Mine. See Section B. III(Probable Hydrologic Consequences) of this findings <br /> document for additional discussion of the predicted hydrologic consequences of mining <br /> operations at the Colowyo Coal Mine. <br /> IV. Unsuitable Areas, Prohibitions and Limitations <br /> The Division finds the affected area is subject to valid rights existing as of August 3, 1977 and is <br /> described in the following subparagraphs. <br /> A. Areas Designated Unsuitable <br /> The affected area is not within an area designated unsuitable for surface coal mining operations <br /> (Rule 2.07.6(2)(d)(i)). <br /> B. Areas under Study <br /> The affected area is not within an area under study for designation as unsuitable for surface coal <br /> mining operations (Rule 2.07.6(2)(d)(ii)). <br /> C. Prohibitions and Limitations <br /> The affected area is not on any lands subject to the following prohibitions or limitations: <br /> • On any lands within the boundaries of the National Park System, the National Wildlife <br /> Refuge System, the National System of Trails, the National Wilderness Preservation <br /> System, the Wild and Scenic Rivers System including rivers under study for designation, <br /> and National Recreation Areas designated by Act of Congress (Rule 2.07.6(2)(d)(iii)(A)); <br /> • Lands within 300 hundred feet measured horizontally of any public building, school, <br /> church, community or institutional building, or public park(Rule 2.07.6(2)(d)(iii)(13)); <br /> • Within 100 feet measured horizontally of a cemetery (Rule 2.07.6(2)(d)(iii)(C)); <br /> Proposed Decision and Findings of Compliance January 5,2023 <br /> Permit Renewal No. 8 Page 130 <br />