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REPLY TO ATTENTION OF Regulatory Division SPK 2012 -00125 Mr. Pete Sigmund United Companies of Mesa County 2273 River Road Grand Junction, Colorado 81505 Dear Mr. Sigmund: Special Conditions Fr DEPARTMENT OF THE ARMY U.S. ARMY ENGINEER DISTRICT, SACRAMENTO CORPS OF ENGINEERS 1325 J STREET SACRAMENTO CA 95814-2922 February 16, 2012 O C E Pic t� MC Ss S RECEIVED �FEB 212012 GRAND JUNCTION FIELD OFFICE � o DM$MN OF RECLAMATION MINING & SAFETY We are responding to your January 30, 3012, request for a Department of the Army permit for the Chambers Pit river restoration and reclamation project. This approximately 3 -acre project involves activities in waters of the U.S., to construct a 400' temporary diversion channel and 250' coffer dam, excavate an area approximately 1,000' long x 250' wide of bed load cobble and sediment to produce a singular main channel configuration, and install river bank stabilization structures to include two (2) 150' J -hook structures and a 50' rip -rap area. Additional activities include two (2) bankful bench areas with one (1) rock vane and 4 -5 toe wood placement structures each, below the ordinary high water mark of the Colorado River. These activities have been proposed to stabilize the north bath of the Colorado River, restore channel hydraulics in the immediate area and provide for protection from subsequent high water flows. The project site is located approximately 1.5 miles east of the City of Rifle within and along the north bank of the Colorado River within the SW1 /4 SE1 /4 of Section 11, Township 6 South, Range 93 West, Sixth Principal Meridian, Latitude 39.54077 °, Longitude - 107.7517° , Garfield County, Colorado. Based on the information you provided, the proposed activities in approximately 3 acres of waters of the U.S., is authorized by Nationwide General Permit (NWP) number 27 for Aquatic Habitat Restoration, Establishment, and Enhancement Activities. Your work must comply with the general terms and conditions listed on the enclosed NWP information sheets and the following special conditions: 1. Prior to initiation of any construction activities within waters of the U.S., you shall employ construction best management practices (BMPs) onsite to prevent degradation to on -site and off -site waters of the U.S. Methods shall include the use of appropriate measures to intercept and capture sediment prior to entering waters of the U.S., as well as erosion control measures along the perimeter of all work areas to prevent the displacement of fill material. All BMPs shall be in place prior to initiation of any construction activities and shall remain until construction activities are completed. You shall maintain erosion control methods until all on -site soils are stabilized.