1995-06-01_GENERAL DOCUMENTS - M1984099

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::;y_ +GLI '_ - .T'n`. `1Q. 2( 2QhQ2 �, 2 PUBLIC NOTICE ` US Army Corps Application: 199680759 of Engineers Applicant: Tectonic Construction Co. Waterway: St. Vrain River Omaha D'IsMot Issue Date: October 15, 1996 Expiration Date: November 14, 1996 REPLY TO : Tri-Lakes Project Office 9307 Colorado State Hwy. 121 30 DAY NOTICE Littleton, CO 80123-6901 JOINT PUBLIC NOTICE FOR PERMIT APPLICATION SUBMITTED TO U.S. ARMY CORPS OF ENGINEERS AND COLORADO DEPARTMENT OF PUBLIC HEALTH AND ENVIRONMENT The District Engineer, U. S. Army Engineer District, Omaha, Nebraska is evaluating a Department of the Army after-the-fact permit application from Tectonic Construction Company, P.O. Sox 385, Pinecliff, Colorado 80471. Permits are issued under Section 404 of the Clean Water Act which regulates the discharge of dredged or fill material in the nation's waters. This public notice is an efforts to resolve a Department of the Army Section 404 of the Clean Water Act violation. Work began in August 1995 and was completed in November 1995 during the low flow period of the River. Tectonic Construction Company is requesting authorization to leave the fill material in place which has been deposited in waters of the United States in conjunction with a bank stabilization project. The project is located in Section --'j 36, Township 3 North, Range 68 West, Weld County, Colorado. During the 1995 Spring high flows, the St. Vrain River breached two places of the Bailey sand and gravel mining pit. The applicant restored the breached River banks and reinforced the eroded areas by placing 8,055 cubic yards (cy) of broken concrete, pit run sand, gravel, and dirt below the ordinary high water mark of the River. Approximately 3,777 feet of the St. Vrain River and its banks were impacted by the placement of fill material or through excavation. Excavation impacts to the River bed was required due to the need to reshape the old channel back to its original configuration. Restoring the banks of the River was required for the protection of the mining operation and to prevent further River bed degradation upstream. During the high flow period the River began depositing silt material in one of the mining pits which was approximately 20 feet deep causing a minor economic set back. High flows also caused minor damage to the bridge located at the confluence of Weld County Road 13 and the St. Vrain River by eroding the south bridge footing. Two buried natural gas pipelines, crossing the River and the mining area, were exposed due to erosion. The repairing of the River banks and eroded areas also repaired the exposed pipelines. A Spiranthes diluvialis survey was sent to the U.S. Fish and Wildlife Service for confirmation. No wetlands were impacted by the project.