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3.3 Site Description <br />3.3.1 Property Location <br />The facility is located approximately four miles south of Durango, Colorado, within the <br />property boundaries of the Animas Glacier gravel pit. The property encompasses over <br />125 acres situated in portions of Section 7U, T34N, R9W, and Section 12U, 34N, R10W <br />NMPM. A site map is included in Appendix C. <br />3.3.2 Nature of the Operation's Activity <br />The purpose of this operation is to mine and process sand and gravel and also to batch <br />concrete and to produce asphalt road materials. <br />3.3.3 Proposed Sequence of Activities <br />This sequence for major activities will be logged in the Superintendent's daily log and is <br />as follows: <br />• Clearing: Extent of areas to be disturbed by the proposed mining and processing <br />activities will be confined to the property boundaries and access roads as <br />defined on the attached drawings. Vegetation removal will be limited to the <br />areas being developed and mined. Any of the existing vegetation on the site will <br />be removed only if necessary. Clearing will be initiated as soon as all permitting <br />is completed. <br />• Grading: Excavation limits for the site will be restricted to within the property <br />boundaries and will be reviewed prior to any grading or stripping. Sediment <br />control barriers will be placed around disturbed areas. Grading will also be <br />necessary along access routes; within the same timeframe as the clearing. <br />• Road Installation: Some grading of access roads will be necessary to safely <br />access the site. A permanent access road to the site will be constructed from CR <br />213 when approved. <br />• Site Stabilization: The areas disturbed during mining will be stabilized in <br />accordance with Best Management Practices (BMPs) either as soon as possible <br />or as needed during this phased mining operation. Stabilizing work will include <br />reseeding disturbed areas, placement of erosion control blankets and /or other <br />erosion or sediment control BMPs detailed in this SWMP. <br />3.3.4 Area of Disturbance <br />The total area of this operation encompasses up to approximately 125 acres. Most of <br />the anticipated long -term disturbance will be within the former Bureau of Reclamation's <br />(BOR's) Borrow Area B, where some of the processing facilities will be constructed, and <br />in the proposed Animas Glacier gravel pit area. As mining is completed within a cell <br />Animas Glacier SWMP February 2012 <br />P. 3 <br />