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WRAC Issues Workshop EAA/STA-2 Expansion Cell 4 April 11, 2005

WRAC Issues Workshop EAA/STA-2 Expansion Cell 4 April 11, 2005. Acceler8 Overview. Everglades Restoration Accelerated Projects. C-43 (Caloosahatchee River) West Reservoir EAA Reservoir Phase I/Boles & Cross Canals EAA Stormwater Treatment Area Expansion

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WRAC Issues Workshop EAA/STA-2 Expansion Cell 4 April 11, 2005

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  1. WRAC Issues Workshop EAA/STA-2 Expansion Cell 4 April 11, 2005 Acceler8 Overview

  2. Everglades Restoration Accelerated Projects • C-43 (Caloosahatchee River) West Reservoir • EAA Reservoir Phase I/Boles & Cross Canals • EAA Stormwater Treatment Area Expansion • Picayune Strand (Southern Golden Gate Estates) Restoration • C-44 (St. Lucie Canal) Reservoir / STA • Water Preserve Areas • Biscayne Bay Coastal Wetlands Phase I • C-111 Spreader Canal

  3. ACCELER8 Achieves Restoration Goals Faster • Reduces excess stormwater deliveries to estuaries • Provides over half of planned CERP surface water storage • Earlier improvements to water quality • Provides greater flood control and water supply management flexibility • Focuses on CERP projects with Project Implementation Reports (PIR) in progress • Provides greater opportunities for improved timing / hydropatterns to the natural system

  4. EAA/STA-2 Expansion Cell 4 Overview

  5. COMPARTMENT C • 8,800 ACRES • HENDRY COUNTY • COMPARTMENT B • 9,500 ACRES • PALM BEACH COUNTY

  6. EAA STA – COMPARTMENT B • INITIAL EXPANSION • STA-2 CELL 4 • BUILD-OUT AREAS • NORTH • SOUTH North South

  7. EAA/STA-2 Cell 4 PROJECT PURPOSE & BENEFITS • Further improve water quality entering the Everglades Protection Area • Develop design/construction sequence to be “flow capable” December 2006 • Provide operational flexibility • Provide public access opportunities

  8. BASIS OF DESIGN REPORT SUMMARY Purpose of BODR is to provide a platform for consolidation of design concepts that may be presented for technical and stakeholder review with the goal of obtaining comment and ultimate buy-in on the proposed design concept. Key elements of the EAA/STA-2 Cell 4 BODR include: • Site Investigations • Design Criteria Development • Hydrologic and Hydraulic Analysis • Project Layout & Evaluation of Alternatives • Conceptual Project Features Design • Develop Opinion of Probable Cost • Supporting Engineering Analysis

  9. EAA/STA-2 Cell 4 DESIGN FEATURES • 2,015 acre expansion to STA-2 • Approximately 2.3 miles wide and 2 miles long • Submerged Aquatic Vegetation (SAV) • Average water depth 1.25’ to 1.5’ • Operating range 0.5’ to 4.5’

  10. EAA/STA-2 Cell 4 Design Features • Optimize the use of existing facilities: • Utilize existing STA-2 inflow infrastructure • Utilize existing STA-2 discharge infrastructure • Modify existing structure G-337A

  11. EAA/STA-2 Cell 4 DESIGN FEATURES • Utilize “Lessons Learned” from previous STA construction: • Degrade existing features – fish farm & PSTA cells • Fill ditches running parallel to flow (north to south) • Degrade farm roads running perpendicular to flow (east to west) • Perform preliminary site preparation work to facilitate inundation of interior cell to promote vegetation growth during construction.

  12. EAA/STA-2 Cell 4 DESIGN FEATURES • Canal corridor between Cells 3 and 4 • 6 gated inflow control structures (66” RCP) with telemetry and remote operation capabilities • 1 outlet control structure will have telemetry and remote operation capabilities.

  13. EAA/STA-2 Cell 4 IMPLEMENTATION TIMELINE • Preliminary Site Survey & Mapping Complete • Geotechnical Investigation and Mid-2005 • Analysis Report • Basis of Design Report April 2005 • Comments Received April 2005 • Preliminary Engineering June 2005 • Intermediate Status Submittal July 2005 • Final Plans & Specifications Oct 2005 • Construction Start Jan 2006 • Cell 4 Flow Capable Dec 2006

  14. Discussion

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