1. Visalia WCP Trickling Filter Upgrade Project 1994/1995 Trickling Filters, Pump Station and Flow Control Box Modifications

2. VISALIA TF UPGRADE Project Manager - David Stringfield P.E. Design Engineer - Steve Beck P.E. Resident Engineer/Construction Manager - David Watson

3. Project Phases n New Effluent Distribution System u Junction Box A Rehabilitation u 54 Primary Effluent Pipeline Replacement u Flow Metering Manhole Construction u Butterfly Valve Control Box Retrofit n Trickling Filter Pump Station Retrofit n Overhaul of 2 180 Diameter Trickling Filters Mechanism and Structure

4. Junction Box A Rehabilitation n Box Rehabilitation. n Slide Gate Replacement n Wall Spool Renovation

5. Junction Box A Rehabilitation

6. Wall spool replacement.

7. New Stainless Steel Slide Gates Installation

8. Effluent Pipeline n Replace Effluent Pipeline n Construct New Manhole Meter Station n Install New Butterfly Valve n Construct New Wall Spool in TFPS

9. Replace Primary Effluent Pipeline

11. Replace Effluent Pipeline

12. Construct Metering Manhole Station

13. Install New 48 Butterfly Valve

14. Construct New Wall Spool TFPS

15. Trickling Filter Pump Station n Structural Rehabilitation n Install New Piping n Install New Pumps and VFD Units n Install New Stairway and Grating n Install New St Stl Slide Gates

16. Trickling Filter Rehabilitation n Demo Old Distributor Structures n Cut Filter Walls n Add Rebar Layers n Construct New Concrete Walls n Install New Channel Piers and Slabs n Install New Underdrain Block n Install New Plastic Media n Install New Distributors and VFD Units

17. Additional Construction Items n Pave Plant Site n Install New Light Fixtures n Install New Irrigation System n Install New Electrical Components