CC--111 Spreader Canal111 Spreader Canal

Alternative Plan Formulation Alternative Plan Formulation Task Force Consultation BriefingTask Force Consultation Briefing

May 22, 2008May 22, 2008

Project LocationProject Location

ENP

C-111 Canal

Florida Bay

Taylor Slough

Formulation ApproachFormulation Approach

•• Full CFull C--111 Spreader Canal Project 111 Spreader Canal Project split into two phasessplit into two phases

•• First (western) project (PIR I) to First (western) project (PIR I) to focus on improving water deliveries focus on improving water deliveries to to Florida BayFlorida Bay via via Taylor SloughTaylor Slough

•• PIR II (eastern) project uncertainties PIR II (eastern) project uncertainties to be addressed via to be addressed via ““Design TestDesign Test””features (physical models)features (physical models)

PIR I: Tentatively Selected PIR I: Tentatively Selected Plan FeaturesPlan Features

TSP FeaturesTSP Features•• Total Estimated CostTotal Estimated Cost –– $119M$119M•• Frog Pond Infiltration Basin (530 ac.)Frog Pond Infiltration Basin (530 ac.)

–– utilizes excess basin water to utilizes excess basin water to extend effectiveness of seepage extend effectiveness of seepage controlcontrol

•• Seepage Control (Aerojet Road Seepage Control (Aerojet Road Canal)Canal) –– to extend to extend ““hydraulic ridgehydraulic ridge””along along ““leakiestleakiest”” section of the Csection of the C--111 111 Canal Canal

•• Intermediate Water Control FeaturesIntermediate Water Control Features–– 2 operable structures in lower C2 operable structures in lower C--111 111 Canal, plug at SCanal, plug at S--20A, operational 20A, operational changes at Schanges at S--20)20)

Design Test FeaturesDesign Test Features(Implemented under CERP (Implemented under CERP

Design Agreement)Design Agreement)

•• Spreader Canal/Pump (1 mile/50 Spreader Canal/Pump (1 mile/50 cfscfs))•• To test pump and spreader canal To test pump and spreader canal

effectivenesseffectiveness•• $4.1M$4.1M

•• Water Quality Infiltration BasinWater Quality Infiltration Basin•• To evaluate effectiveness of water quality To evaluate effectiveness of water quality

improvement improvement •• $2.6M$2.6M

Design Test Feature Locations

5-10 ac. Infiltration Basin

50 cfs Pump and Spreader Canal

C-111 Canal

S-178 Structure