Specifications.docx

United States Department of the Interior U.S. Fish and Wildlife Service Bear Lake NWR 1806 Outlet Canal Road Paris, ID 83261 Statement of Work Rotating Drum Fish Screen

1. General Bear Lake National Wildlife Refuge has a requirement for five self-cleaning, rotating drum-style fish screens designed to keep invasive fish out of wetlands while passing desired water flows. The Refuge is located 3 miles east of Paris, ID. The fish screens will need to be delivered to 1806 Outlet Canal Road, Paris ID 83261.

2. Definitions WCS- A Pre-cast concrete flashboard riser structure designed to control water levels by installing boards.

HDPE pipe- High-Density Polyethylene dual wall pipe.

3. Scope The product dealer/fabricator will provide new serviceable self-rotating drum style fish screens used in wetland applications. Please include shipping and handling cost in your quote.

Rotating Drum Fish Screens

1. Quantity 4 rotating drum fish screens will be made to fit in a Briggs Manufacture Inc. TT55 Twin Track™ Weir with 36” HDPE pipe inlet. http://www.briggsconcrete.com/products/weirs.htm

2. The fish screen drum(s) will be supported in a metal frame with the frame designed to fit the TT55- Twin Track Weir. Frame width should be 63 inches to fit in the front board slots. The frame should use 2 inch square tubing to fit into the board slots.

3. Fish screen drum dimensions- The drum(s) should be 24” in diameter with a drum width of 55 inches. The steel drum shall be constructed of wedge shaped profile wire #63 welded to supporting bars sized to accommodate the hydraulic head and spans required for the application. The wire spacing shall be in accordance with the required specifications and shall have a tolerance of .003 inches.

4. Fish screen drum(s) will be self-rotating drums which use the energy of flowing water to turn the outer fish barrier screen. No other energy source shall be needed to rotate the drum. Fish screen drum, frame, and supporting axels will be fabricated with non-corrosive 304 stainless steel.

5. The fish screen drum(s) shall be designed to pass water flows through the bottom of the drum, provide fish exclusion, and removal of debris that could cause plugging. The drum shall be capable of operating in a maintenance free condition for extended periods of time.

6. Fish screen drum(s) will be self-cleaning by means of rotation. The rotating fish barrier outer cage will deposit debris on the downstream side to prevent buildup of debris that could plug the fish screen.

7. Gears and paddles will be contained inside the fish screen drum to keep debris out of mechanical parts.

8. The bearings or bushings shall be a UHMW material or other low friction water lubricated plastic bushing material sized for the required load. The drum shall have seals on the sides and bottom, the seal material shall be 3/16 inch neoprene rubber or equivalent attached to the tubular frame in a manner so that friction will be minimized.

9. Fish Screens will come completely assembled and will be ready for use upon delivery.

B. Solar Powered Rotating Drum Fish Screen

1. Quantity 1 fish screen will be made to fit in channels of an existing WCS and be equipped with solar power for continuous drive. This will also include solar panel, mounting mast, wiring and everything else necessary to control the charge and to complete battery charging.

2. The fish screen drum will be supported in a metal frame with the frame designed to fit in an existing structure. The frame should be 58” in width to fit into the board slot frame. The total tubing width including fasteners, and seals will be no wider than 2” to fit in the existing board slot channels.

3. Fish screen drum dimensions- The drum should be 36” in diameter with a drum width of 50 inches. The steel drum shall be constructed of wedge shaped profile wire #63 welded to supporting bars sized to accommodate the hydraulic head and spans required for the application. The wire spacing shall be in accordance with the required specifications and shall have a tolerance of .003 inches. Fish screen drum, frame, and supporting axels will be fabricated with non-corrosive 304 stainless steel.

4. The fish screen drum(s) shall be designed to pass water flows through the bottom of the drum, provide fish exclusion, and removal of debris that could cause plugging. The drum shall be capable of operating in a maintenance free condition for extended periods of time.

5. Fish screen drum(s) will be self-cleaning by means of rotation. The rotating fish barrier outer cage will deposit debris on the downstream side to prevent buildup of debris that could plug the fish screen.

6. Gears and paddles will be contained inside the fish screen drum to keep debris out of mechanical parts.

7. The bearings or bushings shall be a UHMW material or other low friction water lubricated plastic bushing material sized for the required load. The drum shall have seals on the sides and bottom, the seal material shall be 3/16 inch neoprene rubber or equivalent attached to the tubular frame in a manner so that friction will be minimized.

8. Fish Screens will come completely assembled and will be ready for use upon delivery.

4. Deliverables A. Quantity 4 - rotating drum fish screens will be made to fit in a Briggs Manufacture Inc. TT55 Twin Track™ Weir with 36” HDPE pipe inlet meeting the above specifications.

B. Quantity 1 – solar powered rotating drum fish screens to be placed in an existing structure meeting the above specifications.

5. Performance dates The performance date for this contract will be September 1st-November 15th, 2018.

6. Inspection and Acceptance The Bear Lake National Wildlife Refuge Manager will be the inspector of goods upon delivery. Any items found defective will be replaced within 2 weeks at the cost of the contractor, including any shipping to deliver a replacement(s).

7. Availability Access will be allowed from 8:00 a.m. to 4:00 p.m. Monday-Thursday on the Refuge.

8. Technical Coordinator All technical inquiries should be directed to:

Ben Wishnek U.S. Fish and Wildlife Service Bear Lake National Wildlife Refuge 322 North 4th Street Montpelier, ID 83254 Phone: 208-847-1757 Email: benyamin_wishnek@fws.gov