AgendaAugust 5, 2014

1. Introduction – Natalie Robottom

2. Background and History – Rob Delaune

3. Present Conceptual Engineering Design Proposed Tasks - Rob Delaune

4. Discussion and Questions 

LaPlace Water Source Workshop

LaPlace Water Source Workshop

August 5, 2014

Goal is to provide solution for Water Supply in LaPlace

Variables that have changed since study completed in 2006 on proposed water plant for east bank of St. John

Reverse osmosis membrane units installed at Woodland Drive New filters installed at Lions Plant New regulations from LDHH Hurricane Isaac exposed vulnerabilities

Proposed Conceptual Engineering Design for LaPlace water source includes six tasks

Water Committee recommended the proposed tasks

Introduction

Task 1 – New Water Intake Pump Station on MS River in LaPlace

Task 2 – New Transmission Main from MS River to Reverse Osmosis Unit Site on Woodland Drive

Task 3 – Pre-treatment at Reverse Osmosis Unit Site on Woodland Drive

Task 4 – Modifications to the Lions Water Treatment Plant Task 5 – New Distribution Pump Station and Transmission

Main form Lions Plant to LaPlace Task 6 – Operation and Maintenance Costs to Maintain

Ruddock Well System vs. Cost to Decommission

List of Tasks

Task 1 – New Water Intake Pump Station on MS River in LaPlace 

Identify, investigate and determine best location Provide conceptual engineering design and cost estimate

for new pump station

Conceptual Engineering Proposed Tasks

Task 2 – New Transmission Main from Mississippi River to Reverse Osmosis Unit on Woodland Drive

Determine route alternatives and provide conceptual engineering of alternatives

Perform comparison evaluation of most feasible route Develop conceptual cost estimate for route alternatives

Conceptual Engineering Proposed Tasks (Cont.)

Task 3 – Pre-treatment at Reverse Osmosis Unit Site on Woodland Drive

Analyze alternative treatment options Calculate required treatment capacity and pre-treatment

options available Provide conceptual engineering and costs for pre-

treatment units

Conceptual Engineering Proposed Tasks (Cont.)

Task 4 – Modifications to the Lions Water Treatment Plant

Determine modifications required to meet LDHH regulations

Provide conceptual engineering and cost estimates for modifications to meet LDHH regulations

Conceptual Engineering Proposed Tasks (Cont.)

Task 5 – New Distribution Pump Station and Transmission Water Main from Lions Plant to LaPlace

Provide conceptual engineering of new distribution pump station

Provide conceptual engineering of transmission main alternatives and comparison evaluation of most feasible route

Develop conceptual cost estimate for pump station and transmission main

Conceptual Engineering Proposed Tasks (Cont.)

Task 6 – Operation and Maintenance Costs to Maintain Ruddock Well System vs. Cost to Decommission

Determine operation and maintenance costs over 20 year term to keep Ruddock well system in operation

Determine cost to decommission Ruddock well system

Conceptual Engineering Proposed Tasks (Cont.)

Conceptual Engineering Design Memorandum and Recommendations Summary

Present total costs of all elements in a summarized format Provide recommendations on moving forward with design and

construction Provide Schedule to completion Operation and maintenance comparison of elements Reliability comparison of elements Potential funding methods for recommended alternative

LaPlace Water Source Conceptual Engineering Results