william “bill” keck sewerage & water board of new … concrete never looked so good!...

PRECAST CONCRETENever Looked So Good!

Construction of the East Bank Wastewater Treatment Plant Berm

William “Bill” KeckSewerage & Water Board of New Orleans

Planning began and in 1896 the New Orleans Drainage

Commission was formed to carry out a Master

Drainage Plan

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Sewerage & Water Board of New Orleans

SELA History

November 7, 1989 12” in 6 hours

SELA is conceived to address interior drainage

Certified by Corps HQ in 1993

Cost sharing agreement signed in 1994

May 8, 1995 20+” in 6 hours

– Damages exceed $1 billion

SELA funded November 1995

http://swbnola.org

http://swbnola.org

Green InfrastructureGoals and Objectives

Identifying and selecting projects that embody the principles of living with water– Social: community assets,

– Economic: cost effective

– Environmental: mitigate repetitive urban flooding

Implementing projects that comply with GI design criteria

Types of Projects– Demonstration

– Educational curriculum for students

– Educational curriculum for adults19

Sewerage & Water Board of New Orleans

Other Notable Improvements

Wetlands Assimilation Project

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Bayou Bienvenue - Background

Mississippi River Gulf Outlet (MRGO)

Early 1960’s, channel dredged to create artificial connection to Breton Sound

1952 197621

Bayou Bienvenue - Background

Impact: Reversal of tidal circulation

– Dramatic increase in salinity

– Destruction of wetlands

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Wetlands Assimilation

CPRA & SWBNO IGA effective May 1, 2011 ($2,750,000)– A-1 consist of the construction of two cells, 24 acres

total, both cells receiving ferrate disinfected effluent.

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Wetlands Assimilation Demo Central Wetlands Unit – A-1

Current Status– Completion of pipeline installation

– Veolia to place biosolids and ash

– Pumping ferrate treated effluent into two cells

– Reduced salinity levels will allow for planting of baldcypress and tupelo

– One year monitoring and analysis

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Wetlands Assimilation DemoCentral Wetlands Unit – A-2

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Wetlands Assimilation DemoCentral Wetlands Unit – A-2

Planting Floating Islands

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Wetlands Assimilation DemoCentral Wetlands Unit – A-2

Planting baldcypress, tupelo and bulrush

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Wetlands Expansion Project

17 acre cell

Cypress Planting

Floating Islands

Ferrate Treated Effluent

Ash Placement

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Future

Reuse a resource (effluent) to convert brackish water to freshwater

Restore cypress and tupelo forests

Provide for hurricane and surge protection

Restore wetlands

ecosystem

Build community

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Sewerage & Water Board of New Orleans

Sewerage & Water Boardof New Orleans

Re-Building the City’s Water Systems for the 21st Century

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EXISTING

S. Claiborne to Constance

NEW

28’ w by 10’ h

& 24’ w by 10’ h

& 18’ w by 10’ h

& 14’ w by 8’ h

20’ w by 12’ h

&16’ w by 8’ h

& 10’ w by 7’ h

NAPOLEON AVE. CANAL

Sewerage & Water Board of New Orleans

S. Claiborne Avenue Canal – Monticello to Lowerline

EXISTING

Lowerline to Monticello

NEW

18’ w by 9’ h

& 20’ w by 10’ h

17.5’ w by 9’ h

S. CLAIBORNE AVE. CANAL

Sewerage & Water Board of New Orleans

Jefferson Avenue Canal – S. Claiborne to Constance

S. Claiborne to Constance

NEW

14’ w by 10’ h

& 14’ w by 8’ h

JEFFERSON AVE. CANAL

Sewerage & Water Board of New Orleans

Louisiana Avenue Canal - S. Claiborne to Constance

S. Claiborne to Constance

12’ w by 10’ h

& 10’ w by 8’ h

& 8’ w by 6’ h

NEW

LOUISIANA AVE. CANAL

Sewerage & Water Board of New Orleans

Water Hammer

$50 million to construct two water towers inside the plant

and booster pumps in the distribution

system

Construction to begin once SELA work in front of plant is

complete by early 2016

Sewerage & Water Board of New Orleans

Water Hammer Hazard Mitigation Project

FEMA Proposed Project Funded at $48 M

– Designed to help reduce future leaks and losses

of water pressure in the water distribution

system.

– Lessen the impact of the loss of power that

causes major water hammer events in

pipelines.

Construction of Two Off-site Water Tanks

– 2000 gallon pressurized tanks

– Tanks are housed in a building

– Building footprint 24 ft. by 20 ft. by 15 ft.

Locations

– On Chef Menteur Highway at the site of the existing water storage tank.

– On Stroelitz Street.

Sewerage & Water Board of New Orleans

Small Water Tanks

Elevated Storage Tanks

Construction of Two Water Tanks

– 2 Million Gallons Each

– No more than 200 feet high

– Base is approximately 40 feet in diameter

Sewerage & Water Board of New Orleans

Elevated Storage Tanks

Upgrades will allow the SWBNO to continuously provide water to the City

Where Will the Tanks Be?