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Clinton Combined Sewer Overflow (CSO) Storage Facility Project

Bruce G. Munn, Nicholas Capozza, Ryan C. Fisher, A.J. McGinn June 4, 2013 Onondaga County Executive Joanne M. Mahoney


Project Team Acknowledgement • Environmental Engineering Associates, LLP • GHD • O’Brien & Gere • ARCADIS Onondaga County Department of Water Environment Protection • Matthew J. Millea, Deputy County Executive • Tom Rhoads PE, Commissioner • Nicholas Capozza, Project Manager Onondaga County Executive Joanne M. Mahoney


Project Team Acknowledgement Brierley Associates – Geotechnical Engineering Bryant Associates – Structural Inspection Services Fisher Associates – Site/Civil Inspection Services B&L Engineering – Site/Traffic Design Group One Design – Architectural Design Landscape & Prospect – Landscape Architecture PB Americas – Noise Mitigation CDM/C+S Joint Venture – Construction Management Jett Industries/Kiewit Construction – General Contractor Onondaga County Executive Joanne M. Mahoney


Project Background • Judgment on Consent signed in 1989 • Amended Consent Judgment (ACJ) signed 1998 Capture >85% of average annual CSOs Removal of floatables Achieve water quality standards for bacteria in Onondaga Lake • County negotiated 4th Stipulation ACJ November 2009 3.7 MG Clinton CSO storage operational by December 31, 2013 Incorporation of Green Infrastructure for CSO reduction 95% CSO Capture by December 31, 2018

Onondaga County Executive Joanne M. Mahoney


Onondaga Lake

Project Location Destiny USA

Metro WWTP Armory Square

Clinton CSO Storage Facility

Onondaga County Executive Joanne M. Mahoney

S.U. Sheraton


Project Location • Insert CSO map from Ed

Onondaga County Executive Joanne M. Mahoney


Key Project Goals/Challenges • Meet ACJ milestones and requirements – Complete Design November 2010 – Commence Construction July 2011 – Commence Operation December 31, 2013 • Keep all CSO storage below grade – Allow reuse of parking lot above CSO Storage – High saline content of groundwater up to 80,000 mg/l – Comply with BMP’s for groundwater dewatering

Onondaga County Executive Joanne M. Mahoney


Key Project Goals/Challenges • Other County Goals – Maximize CSO Storage – Requirement to accommodate 1 year 2 hour storm flow – Be consistent with “Save the Rain Program” • Local Construction Concerns – Mitigation of construction noise – Parking/Traffic mitigation – Archeological/Environmental concerns

Onondaga County Executive Joanne M. Mahoney


CSO Storage Facility Alternatives 1. Conventional Dewatering/Construction 2. Tunneling Construction 3. Four Vertical Slurry Wall Tanks/Cut and Cover Conveyance 4. Three Vertical Slurry Wall Tanks/Single Tunnel

Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Alternative Cost Analysis 1

2

3

4

Cut-and-Cover (single tank)

Three Tunnels

Slurry Wall Three Tank/Tunnel

Slurry Wall four tank and cut-andcover

Construction Cost

$55,800,000

$36,700,000

$41,200,000

$48,800,000

Overflow Pumping Addition

$3,300,000

$3,300,000

$3,300,000

$3,300,000

Contingency (20%)

$11,800,000

$8,000,000

$8,900,000

$10,400,000

$70,900,000

$48,000,000

$53,400,000

$62,500,000

$4,300,000

$2,900,000

$3,200,000

$3,800,000

$75,200,000

$50,900,000

$56,600,000

$66,300,000

Subtotal Construction Cost Escalation to Construction Mid Point in 2012 (6%) Total Estimated Construction Cost

Onondaga County Executive Joanne M. Mahoney


Unique Design Aspects • Innovative Geotechnical • Project Labor Agreement Approach Provisions Slurry diaphragm wall Union work force construction Exemption from Wicks Law Jet grout plug and sheeting One construction contract groundwater containment Open face + closed face TBM options • Specialized Construction Prequalification Jet grouting Tunneling Onondaga County Executive Joanne M. Mahoney


Use of Green Technologies • Recovery and reuse of storm drainage flows for CSO Storage Cleaning • Bioswales and storm flow treatment • Green roof on West Chamber • Use of LED site lighting and parking lot lighting • “Flow through by gravity” design

Onondaga County Executive Joanne M. Mahoney


Construction Approach • Project Bid July 2011 - $70,640,000 – General Contractor - Jeff Industries/ Kiewit Construction • Contract Awarded August 2011 • Revised Construction Approach Reinforced concrete box tunnels vs. circular tunnels

Onondaga County Executive Joanne M. Mahoney


Facility layout

Onondaga County Executive Joanne M. Mahoney


West Chamber

Onondaga County Executive Joanne M. Mahoney


West Structure

Onondaga County Executive Joanne M. Mahoney


East Chamber

Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Project Status • Project is 70% complete • Scheduled for operational December 31, 2013 • 12 month start up and performance period, December 31, 2014 • Project updates to follow

Onondaga County Executive Joanne M. Mahoney


QUESTIONS?

Bruce Munn bruce.munn@ghd.com (315) 679 5800

Onondaga County Executive Joanne M. Mahoney


Onondaga County Executive Joanne M. Mahoney


Save the Rain Clinton CSO Storage Facility Presentation