Arroyo Canal Fish Screen and Sack Dam Bypass Proje   4

Background
The Arroyo Canal Fish Screen and Sack Dam Bypass Project is integral to restoring spring-run Chinook salmon to the San Joaquin River. This project implements two of the highest priority projects identified in the 2006 Settlement: fish passage around Sack Dam and a fish screen on the Arroyo Canal to prevent entrainment of juvenile Chinook salmon in the canal.

The project is necessary for allowing salmon to freely move up and down the river to complete their lifecycle (downriver to the ocean and upriver to spawn). It furthers the Department of the Interior’s efforts to restore Chinook salmon and other fish to the San Joaquin River and is authorized in the San Joaquin River Restoration Settlement Act (P.L. 111-11). The dam and canal are owned and operated by Henry Miller Reclamation District #2131, providing agricultural water supply to approximately 47,000 acres of farmland in the San Joaquin Valley along with conveyance of water supply to Federal and State wildlife refuges and private duck clubs.

Work Details
Work is located at Sack Dam on the San Joaquin River, approximately 24 miles west of Madera, California in Madera and Fresno Counties. The principal components of work include:

- Dewatering and cofferdam contractor designs and installations using methods such as sheet piling and/or embankment construction.
- Installation of closed-ended steel pipe piles and sheet piles beneath concrete slab foundations.
- Concrete headwork structures with associated gates with actuators, decking with guardrail, earthwork, upstream and downstream channel improvements, retaining walls, and river rock-lined fish ramp.
- Concrete fish ladder with baffles.
- Earthen berms with riprap slope protection.
- Gated gravel roadways on the crest.
- Mechanically stabilized earthwall for riverbank stabilization.
- Fish screen with screen cleaner, monorail, electrical outlets, air burst system.
- Maintenance building with gravel yard, security fencing, engine generator set with diesel fuel tank, compressor, HVAC, plumbing, power and access roadway.
- PLC-based control, monitoring, automation system for Sack Dam Fish Passage.
- Provide a Storm Water Pollution Prevention Plan (SWPPP) for approval and install/maintain all stormwater pollution prevention measures as indicated in the approved SWPPP.

Period of Performance
Estimated to be 1050 calendar days.

Place of Performance
Sack Dam on the San Joaquin River, approximately 24 miles west of Madera, California in Madera and Fresno Counties.