TOLEDO COLLINS PARK WTP 40 MGD PLANT ADDITION DESIGN CONSIDERATIONS AND CHALLENGES

TOLEDO COLLINS PARK WTP 40 MGD PLANT ADDITION DESIGN CONSIDERATIONS AND CHALLENGES Kurt Smith, PE & Jack Kane, PE - ARCADIS Jim Donnell, PE - City of Toledo September 28, 2017

Collins Park WTP 40 MGD Plant Addition Purpose: h 20 MGD Redundancy - Allow basin maintenance year round yt 20 MGD Capacity - Address OEPA significant deficiency

Collins Park WTP Process Flow Schematic Kurt Smith Project Manager

Collins Park WTP 40 MGD Plant Addition DESIGN CONSIDERATIONS Pumped rapid mix Flocculation Sedimentation Effluent troughs Algae skimmers Recarbonation Ozone connection GAC Filters CHALLENGES Tight site constraints Other contractors Utility relocations Security Maintenance of plant operations (MOPO) Interconnections to existing East Plant Preservation of Lagoon E COST SAVINGS MEASURES Sedimentation basin size reduction 3D CAD benefits Design Construction Post Construction Prequalification of contractors Low bids

VERTICAL RAPID MIXER ALTERNATIVE RAPID MIX PUMP

WATER CHAMP RAPID MIX ALTERNATIVE

PUMPED RAPID MIXING SYSTEM Rapid mix pump rated for 2,000 gpm at 37 head with 30 Hp motor 10 DISCHARGE 12 SUCTION East Plant RAPID MIX PUMP

PUMPED RAPID MIXING SYSTEM East & West Plant rapid mix channels rated for 80 MGD each OVER BAFFLE UNDER BAFFLE ALUM FEED 8 X 15.5 CHANNEL (TYPICAL)

PUMPED RAPID MIXING SYSTEM Mixing energy exceeds 10-States Standards G-value of 750 fps/ft 10 DISCHARGE PIPE ALUM FEED INJECTION DIFFUSER NOZZLE

PUMPED RAPID MIXING SYSTEM RAPID MIX PUMP West Plant

FLOCCULATION BASINS BASIN 8 FLOC BASIN 10 DISCHARGE PIPE BASIN 7 FLOC DRIVES SODA ASH SPLITTER BOX LIME SLURRY SPLITTER BOX

FLOCCULATION BASINS 10 DISCHARGE PIPE ALUM FEED Basins 1 6 Upgrades Equipment interchangeable with Basins 7 & 8 INJECTION DIFFUSER NOZZLE

SEDIMENTATION BASINS SLUDGE DRAGS 10 DISCHARGE PIPE Basins 1 6 Upgrades Equipment interchangeable with Basins 7 & 8 SLUDGE CROSS COLLECTOR

EFFLUENT LAUNDER BUILDING 10 DISCHARGE PIPE EFFLUENT SUBMERGED ORIFICE INJECTION WEIRS DIFFUSER (TYPICAL) NOZZLE

EFFLUENT LAUNDER BUILDING 10 DISCHARGE PIPE FLOATABLES ALGAE SKIMMERS (TYPICAL) INJECTION DIFFUSER NOZZLE

RECARBONATION BASINS 10 DISCHARGE PIPE CO2 DIFFUSERS (TYPICAL) INJECTION DIFFUSER NOZZLE

OZONE FACILITY CONNECTION 10 DISCHARGE PIPE SETTLED WATER CONDUIT GATES FOR OZONE EFFLUENT CONDUIT KNOCKOUT WALL FOR OZONE INFLUENT CONDUIT

Filter Media Pilot 12 Sand Effective size 0.45 0.55 mm 24 GAC Effective size 1.0 1.2 mm GAC Filters Underdrains Leopold XA IMS 200 caps INJECTION DIFFUSER NOZZLE

SITE CONSTRAINTS OTHER CONTRACTORS Probable Project Costs Basin 7 $ 37,200,000 Basin 8 $ 33,400,000 TOTAL $ 70,600,000 Schedule Basin 7 & Basin 8 Operational by April 2020

SITE CONSTRAINTS OTHER CONTRACTORS Probable Project Costs Basin 7 $ 37,200,000 Basin 8 $ 33,400,000 Other Concurrent Projects CPEU $ 17,000,000 Schedules Basin 7 & Basin 8 Operational by April 2020 CPEU Operational by Sept. 2018

SITE CONSTRAINTS OTHER CONTRACTORS Probable Project Costs Basin 7 $ 37,200,000 Basin 8 $ 33,400,000 Other Concurrent Projects CPEU $ 17,000,000 Ozone $ 40,000,000 TOTAL $127,600,000 Schedules CPEU Operational by Sept. 2018 Basin 7 & Basin 8 Operational by April 2020 Ozone Facility Operational by July 2020

SITE CONSTRAINTS OTHER CONTRACTORS Additional Concurrent Projects CPEU Operational by Sept. 2018 Basin 7 & Basin 8 Operational by April 2020 Ozone Facility Operational by July 2020 Lagoon E Spent Lime Removal Completion by April 2018 Maintenance Facility Completion by December 2018 Basins 1 6 Upgrades Start Construction Jan. 2020

SITE CONSTRAINTS SECURITY & SOLUTIONS

MAINTENANCE OF PLANT OPERATIONS (MOPO) Kurt Smith Project Manager

PRESERVATION OF LAGOON E Kurt Smith Project Manager

PRESERVATION OF LAGOON E & UTILITY RELOCATIONS BASIN 8 50 FEET Kurt Smith Project Manager LIMITS OF EXISTING LAGOON E 2:1 SLOPE STRUCTURAL EMBANKMENT

PRESERVATION OF LAGOON E Kurt Smith Project Manager EXISTING LAGOON CAPACITY REDUCED FROM 41.8 MG TO 33 MG OR 21% REDUCTION

SEDIMENTATION BASIN SIZE REDUCTION Negotiations with OEPA Based on historic plant performance Based on old design text books 4 hours without sludge equipment Based on conservatism of 10- States Standards Kurt Smith Project Manager Cost Savings Benefits Detention time reduced from 4 hours to 3 hours ~ $5.8 M savings Provides space savings for new Ozone Facility SPACE SAVINGS FOR OZONE FACILITY

DESIGN PHASE - Excellent 3D visualization - Interactive tool with Owner - Design progress meetings - Freedom Navisworks software (for the novice) - Clash detection to: - Improve quality of bidding documents - Minimize change orders - Bidding Phase - Provide to Contractors 3D CAD BENEFITS Kurt Smith Project Manager

3D CAD BENEFITS CONSTRUCTION PHASE (CONTRACTOR) - Quicker orientation of project estimators, managers & trades - More efficient coordination of trade disciplines to resolves conflicts - Decreases errors and corrections in field - Higher reliability of expected field conditions and plan drawings - Allows for more prefabrication offsite with higher quality and lower cost - Reduce RFI s and expedite construction schedule Kurt Smith- Creates a safer workplace Project Manager - Construction sequencing

3D CAD BENEFITS POST CONSTRUCTION - Develop 3D views for O&M Manuals - CMMS (computerized maintenance management system) - Add asset information to model for O&M/asset management - Freedom Navisworks software (for the novice) - Interactive tool for operator and safety training Kurt Smith Project Manager

PREQUALIFICATION OF CONTRACTORS Prequalification Process - Received 6 proposals - Short listed to 4 Contractors to bid Evaluation Process - Bonding - Verifiable statement confirming financial wherewithal - Planned approach Kurt Smith to the project - ReferencesProject Manager - Construction Experience - Water/wastewater projects - Large excavation - Workforce & Workload - Corporate Health, Safety & Environmental Program Control Quality and Risk Reduction

LOW BIDS CONSTRUCTION BID RESULTS BASIN 7 AND BASIN 8 PROJECTS Description Basin 7 Basin 8 Engineer s Estimate $37,740,000 $32,820,000 Average of Bids Kurt Smith $36,337,865 $33,319,259 Project Manager Low Bid $28,387,750 $26,694,200 Cost Below Average of Bids $7,950,115 $6,625,059 % Below Average of Bids 21.9% 19.9%

Thank you!

3D CAD BENEFITS Kurt Smith Project Manager

Collins Park WTP 40 MGD Plant Addition DESIGN CONSIDERATIONS Pumped rapid mix Flocculation Sedimentation Effluent troughs Algae skimmers Recarbonation Ozone connection GAC Filters CHALLENGES Tight site constraints Other contractors Utility relocations Security Maintenance of plant operations Interconnections to existing East Plant Preservation of Lagoon E COST SAVINGS MEASURES Sedimentation basin size reduction 3D CAD benefits Design Construction Post-construction Pre-qualification of contractors Low bids

Title Text DESIGN PHASE

Title Text

Title Text COST SAVINGS SDFD SDFDSF SDFSDF DSFSDF

SITE CONSTRAINTS OTHER CONTRACTORS Probable Project Costs Ozone Facility $37,200,000 Schedule Ozone Facility Operational by July 2020

Title Text

Kurt Smith Project Manager

Kurt Smith Project Manager Probable Project Costs Basin 7 $48,700,000 Basin 8 $43,400,000 TOTAL $92,100,000

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