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;..,; PUBLIC NOTICE~'~~~yn~,~~-~~ US Almy Corp. ( ~~'' d Englrrnn P.rmit APWk.OOn No'. D.U: r A10uW.rgw Dlslriel X101 J.NVwn Plexa, NE CO-96-30200 March 18, 1997 Albuqu.rgw, NM 871093/35 Phon.: SutpnM DH.: p..RO.sosa~:aeee (718) s43-6914 Ayril 18, 1997 In R.pY R.tv to: District BaQia~~r, ATTN: CESWA-OD-R PERMIT APPLICATION UNDER SECTION 404 OF THE CLEAN WATER ACT (33 USC 1344) I• Summary of Proposed Project: We are requesting public comment on the following project before the above suspense date. The application is fora permit to place dredged and fill material as channelization and bank ~ protection in the Arkansas River near Pueblo, Pueblo County, Colorado. The project will include channelizing ~ 3,300 feet of river and constructing hard points along ~m another 6,700 feet of bank. Details of the proposed project ~~' are provided below. A permit will be issued unless the work is found to be contrary to the public interest. p JOINT Pr18LIC NOTICB V.B. ARMY COAPB OF BN~INEEAB AND COLORADO DEPARTMENT O! PVSLIC 8E1-LT8 AND HNVIRONM8NT Name of Applicant: Southvraet Rudy-Mix. Iac., 37400 Highway 96 East, Pueblo, CO 61006. cation: The project is located in the Arkansas River miles east of Pueblo, Pueblo County, Colorado in 534, T20S, R63W and S2 and 3, T215, R63W (38° 15.4' N Latitude, 104° 25.2' W Longitude). Description of Work: The proposed work includes rechannelizing 3,300 feet of the Arkansas River. Brush and debris would be cleared across a vegetated sandbar in a strip 150 to 200 feet wide with dozer. A new channel 2,500 feet long would be excavated 100 to 125 feet wide and 6 to 8 feet deep with a dragline. The dredged material would be piled on the northern side of the new channel 40 to 50 feet away. Dredging would be completed before the new channel ends are opened to the river. Once the new channel is constructed and the ends opened, river flows would be diverted into the new channel with a permanent berm constructed of river channel material. Other sections of the northern bank of the river through the applicant's property would be protected from erosion with hard points. 4,700 feet of bank above the channelized section and 2,000 feet of bank below the channelized section would be treated. Hard points would be constructed of waste concrete dollops and broken concrete and would be built every 125 to 150 feet along the bank. Each hard point would be 20 to 25 feet wide at the bottom, 12 to 14 feet wide at the base, 6 feet high, and extend about 25 feet out from the bank. As river fines settle out between the hard points, the points would be extended an additional 5 to 10 feet into the river every two to three years until a maximum length of 50 feet is achieved to move the river over 50 to 100 feet. Work is expected to begin upon issuance of a permit and the initial construction would be completed in about 4 weeks. Hard point extension would occur every 2 to 3 years but not to exceed 10 years. Purpose and Need: The stated purpose of the project is to protect irrigation ditches and to protect ponds created by sand and gravel mining from ongoing river erosion. The land dividing a finished mining pond from the river was severely eroded the last several years and the river breached into the pond at one place. Without any action, the river could erode further into the pond and attempt to fill the deep pond with sediment. Related Work: Waste concrete hard points were built along 500 feet of the bank at the finished mining pond in an attempt to protect the pond from breaching. The work was performed under the nationwide permit for bank protection. The work was not entirely successful and the river breached into the pond in 1996. Plans and Data: Drawings showing the location of the work site and other data are enclosed with this notice. If additional information is desired, it may be obtained from the applicant, or from: U.S. Army Corps of Engineers Southern Colorado Project Office 720 North Main Street, Suite 205 Pueblo, CO 81003-3046 (719) 543-6914 Fax No. (719) 543-9475 NEWS ~tELF.ASE