Permanent Canal Closures & Pumps · The Corps awarded the approximately $615 million contract to construct Permanent Canal Closures & Pumps \⠀倀䌀䌀倀尩 at the mouths \൯f

$Page 1: Permanent Canal Closures & Pumps · The Corps awarded the approximately $615 million contract to construct Permanent Canal Closures & Pumps \⠀倀䌀䌀倀尩 at the mouths \൯f$
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US Army Corps of Engineers

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Permanent Canal Closures & Pumps

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Interim Closures Structures (ICS) Locations – Provide 100-year level of Risk Reduction

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Presenter

Presentation Notes

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• Phase I Constructed Storm Surge Barrier and Installed Pumps (June 2006)

• 5,000 cfs - 18 hydraulic pumps and 14 hydraulic portable pumps

• Phase II Added Additional Pumping Capacity (Aug 2007)

• 4,000 cfs - 11 direct drive pumps

• Pumping Capacity: 9,000 cfs

Current ICS Barriers and Pumps

19 December 2013 3

• Phase I Constructed Storm Surge Barrier and Installed Pumps (2006)

• 2,000 cfs - 10 hydraulic pumps


• Phase I Constructed Storm Surge Barrier and Installed Pumps (2006)

• 2,400 cfs - 12 hydraulic pumps

• Phase II Added Additional Pumping Capacity (Aug 2007)

• 2,600 cfs - 8 direct drive pumps


Presenter

Presentation Notes

Decision to close gated closure structures is based on predicted lake elevations / storm surge District Engineer makes decision to lower gates – local officials are notified When conditions are favorable, gates will be raised ASAP

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Permanent Canal Closures and Pumps Public Involvement during IER 5

► Nine (9) Public Meetings held 12 Jun 2007 – 20 May 2009 • Criteria

Risk and Reliability Constructability Human and Environmental Impacts Operations and Maintenance

► Decision Record Signed 30 Jun 2009

PPA ► Executed 12 Mar 2010

RFP Community and Stakeholder Involvement ► Series of three (3) Public Meetings held 19 Nov 2009- 24 Mar

2010 ► CPRA, SWB, JP, SLFPA-E, OLD and EJLD

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Apr 2013 Reaffirm Award to PCCP - $615M 6 May 2013 Design NTP Issued

9 May 2013 Logistics Meeting w/DB Contractor

20 May 13 Pre- Design Conference 9:00 AM at Marriot

21 May 13 Post Award Conference

4 Jun 13 Initial Design Conference

5-6 Jun 13 Design Build Workshop

14 Jun 13 PCCP Ground Breaking 25 Jun 13 Pre-Partnering Meeting

30 Jul 2013 Formal Partnering Conference

Nov 2013 Start Construction Jan 2017 Construction Complete

PCCP Milestone Schedule

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Permanent Canal Closures and Pumps

Design and construction of closure structures and pump stations at or near the mouth of each outfall canal (17th Street, Orleans Ave., and London Ave.) operating in series with the existing Sewerage and Water Board of New Orleans (SWBNO) pump stations.

Reaffirmed award on Apr 17, 2013 to PCCP

Constructors a Joint Venture

Notice to proceed issued on May 6, 2013

Contract value is approximately $615 million

Contractual Completion early 2017

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Presenter

Presentation Notes

The Corps awarded the approximately $615 million contract to construct Permanent Canal Closures & Pumps (PCCP) at the mouths of the 17th Street, Orleans Avenue and London Avenue outfall canals on April 17, 2013 to PCCP Constructors JV. The PCCP will provide a permanent and more sustainable measure for reducing the risk of a 100-year level storm surge entering the outfall canals. The PCCP will be composed of permanent gated storm surge barriers and brick façade pump stations at or near the lakefront. The notice to proceed was issued on May 6, 2013, and construction will be complete in 44 months (2017). Major construction will begin in November. ****All practical efforts have been made to ensure that the design of these structures is as aesthetically pleasing as possible and the exterior of these structures conforms to other stations of their kind in the New Orleans area.****

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17th Street – 12,600 CFS / 94,255 GPS 15 generators (2.6 MW each), six 5,000 hp pump motors, two 2,500 hp pump motors

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Conceptual

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17th Street – Gated Bypass / Trash Screens

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Bypass Open - 96 – 100% Conceptual

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17th Street Aerial View (late Nov 2013)

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17th Street West Side Bypass Cofferdam (late Nov 2013)

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Orleans Avenue – 2,700 CFS / 20,197 GPS 4 generators (2.6 MW each), three 2,500 hp pump motors

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Conceptual

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Orleans Avenue – Gated Bypass / Trash Screens

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Current Layout Orleans Avenue

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Primary Entrance

Secondary Entrance

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Presentation Notes

DPS – 2,550 ICS – 2,200 PCCP – 2,700

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Orleans Avenue Aerial View (late Nov 2013)

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Orleans Avenue Surcharge (late Nov 2013)

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London Avenue – 9,000 CFS / 56,060 GPS 11 generators (2.6 MW each), four 5,000 hp pump motors, two 2,500 hp

pump motors

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London Avenue – Gated Bypass / Trash Screens

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Conceptual

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Current Layout London Avenue

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Secondary Entrance

Primary Entrance

Presenter

Presentation Notes

DPS – 7,980 ICS – 5,200 PCCP – 9,000


Conceptual - From Pratt Drive/Lark Street

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London Avenue Aerial View (late Nov 2013)


London Avenue Surcharge (late Nov 2013)

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PCCP – Permanent Canal Closures and Pumps

Milestones Contractual Milestones

Notice to Proceed 06-May-13

Contract Completion Date (1336 Cal Days) 17-Jan-17

Construction Milestones 17th St Milestones

Orleans Ave Milestones

London Ave Milestones

Open new Bypass Gate Structure to Channel Flow 4/26/2014 11/25/2014 1/30/2015

Sluice Gates Complete 12/04/15 07/14/15 11/07/15

Dewater Pump Station Cofferdam Complete 11/24/14 08/20/14 11/22/14

Generator Building Dry In Complete 03/05/15 01/27/15 03/23/15

Rough Set First Pump 04/01/15 12/30/15 04/11/15

Pump Station & Auxiliary Building Dry In Complete 09/09/15 05/07/15 08/24/15

Water Up Pump Station Cofferdam Complete 10/12/15 06/14/15 10/11/15

Generators Operational w/ Power to Pump Motors 01/08/16 08/25/15 12/23/15

1st Pump Test 4th QTR 2015 3rd QTR 2015 1st QTR 2016

Contractual Complete 1/17/2017 1/17/2017 1/17/2017

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Vehicle Access Over Screening Platform with Access to Gate Structure

Pump Station Control Room 50 Ton Bridge Crane

Pumps with Vertical Gear Motor

Siphon Discharge

Climber Screen

Overhead Door

Spare Parts Storage Area

Canal Side Lake Side

Formed Suction Intake

Air Scour Floodwall El. +18.0’

Sheet Pile Cut-Off Wall Rip Rap

Generator Building

Rip Rap

17th and London Top of Building 52.9 ft Orleans Top of Building 49.9 ft

Canal Depth -29.8

17th Street

Presenter

Presentation Notes

The enhanced architectural design of the pump station, generator building, and auxiliary building reflects historic drainage pump station designs and building materials, such as brick facades and green patina copper roofing. The reduced building heights, enhanced screening walls, modified site layouts and augmented landscaping materials greatly reduce facility visibility to adjacent residences. Minimal noise impact at the property lines is achieved from the strategic orientation of generator buildings as well as improved acoustic treatments such as double walls with noise reducing panels, low air velocity remote radiators, and extreme grade generator engine silencers. The pump stations will be constructed with a deeper sill so that no major structural retrofitting would be required for adapting the structures in the future. Pumping Capacity 17th – 12,600 cfs Orleans – 2,700 cfs London – 9,000 cfs

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Approved Traffic Haul Routes

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What to expect during construction ► Elevated noise levels from pile driving, generators, etc.

• Pile Driving Activities : 7:00 AM and 9:00 PM ► Increased truck traffic (trucks will utilize approved

haul routes) *plan reviewed and approved by State of LA DOTD, City of New Orleans, Jefferson Parish

► Temporary road closures ► Extended work hours (up to 24 hours per day)

Efforts to minimize impacts during construction

► Noise and vibration monitoring plan to ensure that construction stays within city ordinances

► Coordinating with City of New Orleans Department of Public Works on temporary road closures

► GPS tracking system to monitor contractor truck route ► Construction signage indicating work ongoing /

workers present; signage with construction impact hotline

Following Construction Operated during storm events Operated during routine maintenance

• Twice Monthly during Hurricane Season (June 1 - November 30) • One monthly (December 1 – May 31)

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Construction Impacts and Mitigation

Presenter

Presentation Notes

Temporary Road Closures - Any such closures will be communicated to the public in advance of the closure. Noise / Vibration Monitoring - Contractor will utilize Blast Mate Series III vibration monitors to measure and record vibration levels before and during construction Five Cubits – Will ensure that trucks stay within the designated haul route for that day and operation. This will allow the contractor to track their location in real time so accurate monitoring will be possible.

Documents

Permanent Canal Closures & Pumps · The Corps awarded the approximately $615 million contract to construct Permanent Canal Closures & Pumps \⠀倀䌀䌀倀尩 at the mouths \൯f