US ARMY CORPS OF ENGINEERS, PORTLAND DISTRICT, PO BOX 2946, PORTLAND OR 97208-2946

Y -- LONG TOM LEVEE REPAIR, LONG TOM RIVER, OREGON SOL DACW57-96-B-0025 DUE 082996 POC Contract Specialist MARTINA HARWOOD (503) 326-5816 (Site Code DACW57) The existing levee/revetment at three locations along the Long Tom River has eroded to the point where significant bank failure is imminent if repair is not undertaken. The lowermost of these sites is located about 1/4 mile downstream of the Alpine Road Bridge near Monroe, Oregon. The erosion area is about 250 feet long and has encroached into the right bank levee structure. The next upstream site is located on the right bank about one mile above the Alpine Road Bridge. About 320 feet of revetment and bankline are severely eroded. The furthest upstream site, which extends for about 300 feet, is located on the left bank about one mile above the Stroda drop structure. Continued erosion at these sites will breach the levee structure, leading to reduced flow capacity of the Long Tom and flooding of adjacent lands. The purpose of the repair is to prevent this occurrence. The proposed action is reconstruction of levee bankline slopes. The revetment would consist of an 18 inch layer of class II riprap placed on a 1 vertical to 2 horizontal slope, underlain with a 12 inch layer of gravel bedding material. The riprap would extend from 2 feet below the top of the embankment structure to a point approximately 5 feet below the channel bottom. The quantity of material to be used for the repair at each site follows and is shown in cubic yards in the order of riprap, bedding excavation, and embankment: Site 1 (250 FT in length);630 CY, 400 CY, 800 CY, 2070 CY. Site 2 (320 FT in length); 790 CY, 500 CY, 920 CY, 2240 CY. Site 3 (300 FT in length); 760 CY, 490 CY, 900 CY, 3620 CY. The estimated cost range is between $250,000 and $500,000. This procurement is open to both large and small business. The size standard for small businesses is a concern, including affiliates, having an average annual gross sales or receipts for the preceding three years not to exceed $17.0 million. Please indicate business size when responding. Tentative availability of Invitation for Bid is on or about July 31, 1996 at a cost of $25.00, which is nonrefundable. Tenative bid opening date is on or about August 29, 1996. Contract work should be completed within approximately 60 days from date of award. All responsible sources may(0180)

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