Department of Army, New England District, Corps of Engineers, 696 Virginia Road, Concord, Massachusetts 01742-2751

Z -- MAINTENANCE, REPAIR OR ALTERATION OF REAL PROPERTY SOL DACW33-00-T-0066 DUE 061900 POC Norm Krause (978)318-8833 E-MAIL: Purchase Branch, Norman.A.Krause@usace.army.mil. The work consists of the placing of approximately 300 three-foot diameter (1 cubic yard) granite boulders within a 4800 foot reach of the Naugatuck River. The work area extends from the confluence of the East and West Branch Naugatuck Rivers to a point about 1300 feet downstream of the Palmer Street Bridge. On average approximately 15 boulders will be placed within each 300 feet reach of pool and 21 boulders within each 300 feet reach of riffle. Each boulder will be buried in the streambed to a depth of about 1 foot in riffle areas, clusters of three boulders will be oriented to promote development of a deep low flow channel. Shallow, ca 3 ft diameter depressions may be excavated downstream of the clusters to promote develoment of scour holes. Material excavated from the depressions would be sidecast. In pool areas, boulders will be placed singly or in clusters of 2 or 3 boulders within areas likely to remain inundated under most of the year. In addition to the 300 new boulders, some existing boulders in the river may be relocated to improve habitat in both riffle and pool areas. At the outfall of a small stream (Gulf Brook), about 16 boulders will be clustered to concentrate flow and cause formation of a deep scour hole. Boulders will be installed using heavy equipment (dump trucks and a large bucket loader) working within the river channel during low flow periods (June 1 through September 30). At all times a Stream Restoration Specialist hired by the contractor will supervise boulder placement. The Stream Restoration Specialist must submit his credentials for approval to the US Army Corps of Engineers, New England District. Temporary roads will be installed at four locations to provide access to the river. Roads will be completely removed once the boulders are installed. Equipment operating in the river will be washed free of oil and grease and inspected daily for leaks. Estimated cost of the project is between $25,000 and $100,000. Specifications will be available at no cost on or about 05/22/00. Requests for Solicitations may be faxed to 978-318-8207. All responsible sources may submit a quote which will be considered by the New England District. Posted 04/26/00 (W-SN448665). (0117)

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