PICAYUNE STRAND RESTORATION PROJECT

PUMP STATIONS PRELIMINARY DESIGN

South Florida Water Management District Water Resources Advisory CommitteeApril 6, 2006

Contents

Project Overview

Introduction to Pump Stations

Pump Station Preliminary Design

Schedule

Issues and concerns

Discussion

U.S 41

6L levee

Recommended Plan

3 Spreader Canals

3 Pump Stations

Canal Plugs

80% of Roads Removed

Primary All Weather Roads

Secondary Roads

Flood Protection Levees

ELEMENTSELEMENTSMILES

I-75

0 2

Management Roads

810 cfs

2650 cfsPrivate Lands Levee

POI N leveePOI SE leveePOI SW levee

MILLE

R

CA

NA

L

FAK

A U

NIO

NC

AN

AL

MER

RIT

T

CA

NA

L

PR

AIR

IE

CA

NA

L

1250 cfs

Design Activities Preliminary Design Pump Stations Road Removal BODR Development Spreader Canals Protection Levees

Pump Stations Sized for 100 Year Storm Event

Merritt – 810 cfs Miller – 1250 cfs Faka Union – 2650 cfs

Designed to Meet CERP and SFWMD Standards 155 mph wind load Diesel drives Ten day fuel supply

Minimal Reliance on Outside Utilities Diesel engines and generators

Remote Control and Operations Capability

Hydrologic Design Criteria Match Canal Stage Hydrographs at I-75

For 5-Day, 100-Year Design Storm Event

No Pump Operation Below Minimum Canal Levels at I-75:

Wet Season Dry Season(ft NAVD88) (ft NAVD88)

Miller Canal 4.9 5.9Faka Union Canal 4.9 5.9Merritt Canal 5.2 8.0

Schedule

Initiate Design 12/04

Complete Design 11/06

Start Construction 1/07

Construction Complete 12/08

Operational Testing 4/09

Pump Stations Opinion of Probable Cost

PIR (Oct 2004) $67.5M (25% Contingency)

BODR (Sept 2005) $76.8M (30% Contingency)

Prelim Design (Mar 2006) $109.5M (25% Contingency)

Differences (BODR vs. Current Estimate) : Installation of Major Equipment Added $5.6M Additional Design Detail Reveals Additional Costs $1.5M Use of Stainless Steel (Per District Stds.)

$1.2M Poor Soil Conditions – Requires More Site Preparation $9.2M Additional Contingency Related Dollars $8.6M Concrete Volume & Cost Per CuYd Under Estimated $6.6M

Potential Savings by using portable pumps for redundancy$7.0M

Stakeholder Issues and Concerns(Pump Stations)

Capacity and operation of pump stations

Hardy Pit is not a storage reservoir

Redundant pump capacity included

Pump Station operation will mimic existing structures

Impacts to wildlife due to noise, lighting, and towers

Stakeholder Issues and Concerns(other Project Features)

Location and sizing of protection levees is being addressed in a separate BODR.

Project will not change water quality Working with DOF ; recreational opportunities will be

consistent with DOF Land Management Plan Additional modeling is being done to determine if there

are impacts to Tamiami Trail Pump stations will be operated in accordance with the

Permit criteria and Operation Plan All modeling will be completed before Final Design Uplands and Wetlands were both used as criteria in

determining Project benefits