LaPlace Water Source Workshop
Agenda
August 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
August 5, 2014
Introduction
 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
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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
List of Tasks
 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
Conceptual Engineering Proposed
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 (Cont.)
 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
LaPlace Water Source Conceptual
Engineering Results
 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