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-November 20, 2001 <br />Division of Minerals and Geology <br />Mr. Tom Schreiner _ <br />Division of Miherals and Geology Permit ~ {^ - nl-b4o Confidental?: <br />1313 Sherman Street Room 215 Class: Type-Seq.: <br />Denver, Colorado 80203 From: To:~~rY <br />Doc. Na e: <br />' Doc. Date (if nod rata _ )' <br />RE: ,River Valley Resources, Regular 112 Adequacy Review Responses, File #M-2001-090 <br />Dear Mr. Schreiner: - <br />The following and attached information is provided in response to your comments and questions <br />regarding the River Valley Resource 112 Permit application. Our responses are in the same <br />order as your comments. <br />6.4.3 EXHIBIT C -Pre-Minina and Minim Plan Map(s) of Affected Lands <br />1. Attached is a replacement map for Exhibit C-2. This map shows the location and size of <br />Phases 4-13. <br />2. .Cross sections for A-A, B-B apd GC are attached. <br />6.4.4 EXHIBIT D -Minina Plan <br />3. The operator may accept clean, structural fill' from. their customers for use in backfilling <br />areas and reducing the final exposed water surface. <br />(a) This material would primarily be excess soil from development sites. This material <br />would be placed around the outer limit of the final proposed lake configuration <br />mostly on the south side of the operation. <br />(b) It is anticipated that the operator may accept a proximately 10 000 cubic yards per <br />year. .r.~~?`~w ."~ ~, S~~.cZe~.-r-e°'~a ~/ <br />(c) All contractors will be required to sign an affidavit indicating-that the material is clean <br />and inert as defined in Rule 1.1(20). 4,-~~~~-~.~`.aa~/.r-~~ <br />(d) The operator proposes_to accept fill material during the life of the operation. <br />(e) The backfill material will be used to partially shape the perimeter of the lake and <br />possibly leave a smaller.exposed water surface than is initially anticipated. The post- <br />, mining use of the site is proposed as General Agriculture. The- backfill materials <br />would not alter that. <br />(f) As this material will not be used for placing structures on, it will riot need to:be highly <br />compacted. As the final perimeter slopes are graded and shaped, the material will be <br />compacted by the weight of.the equipment. All slopes will be graded to 3H:1V.or <br />flatter. <br />1499 West 120th Avenue, Suite 200 - ~ www.applegategroup.com <br />Denver. Colorado 80234-2728 - <br /> <br />5441 Boeing Drive, Suite 200 <br />l:oveland, Colorado 80538-8855 <br />