Clinton Combined Sewer Overflow (CSO) Storage Facility Project Bruce G. Munn, Nicholas Capozza, Ryan C. Fisher, A.J . McGinn J une 4, 2013 Onondaga County Executive Onondaga County Executive Joanne M. Mahoney Joanne M. Mahoney
Project T eam Acknowledgement • Environmental Engineering Associates, LLP • GHD • O’Brien & Gere • ARCADIS Onondaga County Department of Water Environment Protection • Matthew J. Millea, Deputy County Executive • T om Rhoads PE, Commissioner • Nicholas Capozza, Project Manager Onondaga County Executive Joanne M. Mahoney
Project T eam 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 oint Venture – Construction Management CDM / C+S J J ett 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 4 th 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
Project Location Onondaga Lake Destiny USA Metro WWTP Armory Square S.U. Sheraton Clinton CSO Storage Facility Onondaga County Executive Joanne M. Mahoney
Project Location • Insert CSO map from Ed Onondaga County Executive Joanne M. Mahoney
Key Project Goals/ Challenges • M eet 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 – M itigation 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 Three Tunnels Slurry Wall Three Slurry Wall four (single tank) Tank/ Tunnel tank and cut-and- cover Construction Cost $55,800,000 $36,700,000 $41,200,000 $48,800,000 Overflow Pumping $3,300,000 $3,300,000 $3,300,000 $3,300,000 Addition Contingency (20%) $11,800,000 $8,000,000 $8,900,000 $10,400,000 Subtotal $70,900,000 $48,000,000 $53,400,000 $62,500,000 Construction Cost Escalation to Construction Mid $4,300,000 $2,900,000 $3,200,000 $3,800,000 Point in 2012 (6%) Total Estimated $75,200,000 $50,900,000 $56,600,000 $66,300,000 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 T echnologies • 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
QUES TIONS? Bruce Munn bruce.munn@ghd.com (315) 679 5800 Onondaga County Executive Onondaga County Executive Joanne M. Mahoney Joanne M. Mahoney
Onondaga County Executive Joanne M. Mahoney
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