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GENERAL OVERVIEW OF CIVIL WORKS PHASES

GENERAL OVERVIEW OF CIVIL WORKS PHASES. RECONNAISSANCE STUDY FEASIBILITY STUDY FINAL DESIGN PROJECT CONSTRUCTION. RECONNAISSANCE STUDIES. CORPS 905(b) ANALYSIS REPORT Establish Federal Interest in Ecosystem Restoration Completed in 1998. FEASIBILITY STUDY.

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GENERAL OVERVIEW OF CIVIL WORKS PHASES

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  1. GENERAL OVERVIEW OF CIVIL WORKS PHASES • RECONNAISSANCE STUDY • FEASIBILITY STUDY • FINAL DESIGN • PROJECT CONSTRUCTION

  2. RECONNAISSANCE STUDIES • CORPS 905(b) ANALYSIS REPORT • Establish Federal Interest in Ecosystem Restoration • Completed in 1998

  3. FEASIBILITY STUDY • FCSA – Feasibility Cost Sharing Agreement • June 2001 • Cost: $2.1 Million • Costs Shared 50/50 • Six Step Planning Process • Baseline Conditions Report • Summer 2005 • Feasibility Report and EIS/EIR • Summer 2006

  4. FEASIBILITY STUDY OBJECTIVES • Restore the Malibu Creek ecosystem • Restore wildlife corridor within watershed • Beneficial use of sediment

  5. FEASIBILITY STUDY CONSTRAINTS • Location of dam • Impacts to existing environmental habitat • Opposition to the removal of the dam • Water quality issues • Proximity to Malibu lagoon

  6. Cost Analysis EstablishBaseline (Collect Data) FEASIBILITY STUDY ModelAlternatives ModelExistingConditions Select (Simulation) (Simulation) Environmental Evaluation/Cost Benefit Study IMPLEMENT

  7. Surveying & Mapping • Aerial Photography • Contour Mapping

  8. Hydrology/Hydraulics, Sediment Transport • Hydrology • Discharge-Frequency Analysis • Volume-Frequency Analysis • Hydraulic Analysis • Cross Sections • Sediment Budget • Sediment Transport Model (HEC-6)

  9. Geotechnical Investigations • Geotechnical Drilling/Sampling • Hazardous and Toxic Waste Sampling

  10. Hazardous and Toxic Waste Sampling • Economic Analysis • Cultural Resource Survey and Evaluation

  11. Environmental Studies • Terrestrial and Aquatic Habitat Restoration for Native Species • Threatened and Endangered Species Habitat Enhancement • Beneficial Uses of Excavated Sediments • Water Quality

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