Grand Forks Regional Water Treatment Plant

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Providing Clean Affordable Drinking Water North Dakota Water Users Joint Summer Meetings and Executive Briefing July 14, 2021 Grand Forks Regional Water Treatment Plant

Transcript of Grand Forks Regional Water Treatment Plant

Page 1: Grand Forks Regional Water Treatment Plant

Providing Clean Affordable Drinking Water

North Dakota Water UsersJoint Summer Meetings and Executive Briefing

July 14, 2021

Grand Forks Regional Water Treatment Plant

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CONCEPT PLANNING & INTEGRATED

SYSTEM BUILDOUT

PILOTING/ENGINEERING

PROCESS

Funding & Implementation

COMBINING FOR THE FUTURE OF WATER IN GRAND FORKS

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CONCEPT PLANNING & INTEGRATED SYSTEM BUILDOUT

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Original WTP Site

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Restricted Site Access

Constrained Process Areas

No Expansion Footprint

Security/Safety Concerns

Historical Neighborhood1968

Future Floodwall

1984

1956

Red River

Red Lake River

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1997Major Flood Event

• $7 Million in Flood Recovery at WTP

• $3 Million in Flood Recovery in Distribution System Upgrades

• Demonstrated Need for a New Plan

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Building Around a Unified Concept

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$52 M in investment 2002 - 2012RESIDUALS PONDS

EXISTING RESIDUALS FORCE MAIN

TRANSMISSION MAINS

INTAKE

CLEARWELL & PUMP STATION

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GFWTP Condition Evaluation▷ Identified major challenges at existing facility ▷GFWTP is in poor condition

Technology Pilot Testing▷ Ozone with biological filtration▷ Pretreatment plate settlers▷ Ultrafiltration▷ Reverse osmosis

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1898

HISTORICAL RECENT PAST CURRENT1894 1968 1997 2021

2007

2007-

2014

Grand Forks Regional WTP Technology and Capacity Evaluation▷ Water demand & capacity projections▷ Long-term technology evaluation▷ Facility tours▷ Pilot testing recommendations

2010-

2014

2012 Devils Lake Impacts▷ New and changing water quality

issues

2014

Kepner-Tregoe Analysis▷ Compared 3 Treatment Alts▷ Incorporated Non-Monetary

Considerations into Decision ProcessResulting Hybrid Treatment Approach

2015-

2020Design & Construction of GFRWTP▷ Included Value Engineering to reduce

cost

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2020Regional WTP Operational

2008$2.8 Million in Interim Improvements▷ Extend Useful Life for Long-term

planning

Timeline of WTP Development

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New WTP Design

PILOTING/ENGINEERING PROCESS

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Source Water Issues SOURCE WATERS BLENDED TO OPTIMIZE

WATER QUALITY AND OPERATIONS

• Lower Turbidity• Lower Hardness• Lower Sulfate Content• Higher Organics

CONVENTIONAL

LIME SOFTENING TREATMENT

PLANT

RAW WATER INTAKE

• Higher Turbidity• Higher Hardness• Higher Sulfate Content• Lower Organics

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Kepner-Tregoe Analysis

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Clarify Purpose and Goals

Evaluate Alternatives

Assess Risks & Opinions

Make a Balanced Decision

Engage Stakeholders

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Selected Approach

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GRAND FORKS REGIONAL WATER TREATMENT FACILITY▪ Selected Conventional Lime / Membrane Hybrid Facility ▪ 20 MGD Facility - Expandable to 40 MGD▪ Long-term building footprint – 50-year asset on a 100-year Campus ▪ Industrial Park site to tie into future Economic Development

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FUNDING AND IMPLEMENTATION

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Funding Partnership

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Loss of Federal Participation

Federal/State/Local becomes

State/Local

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Delivery Process

▪ Construction Manager at Risk

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TOTAL BID PACKAGES

55 Allowed for SRF / Non-SRF Bidding

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Local Buy-In & Choice

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• 2017 Voters Enacted a New ½ Cent Sales Tax

• Dedicated to Street Investment & Water Infrastructure

• Funds Portion of Local Cost-Share Debt Service

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RESULTS

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Critical Piece to City-wide Planning

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Grand Forks Regional WTP

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Control Room

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Training/Breakroom Area

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Pretreatment

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Pretreatment

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Softening Basin

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Ozone Generation

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Biological Activated Carbon Gravity Filters

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Ultrafiltration Membrane Basins

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Ultrafiltration Equipment

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Reverse Osmosis Membrane Skids

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Reverse Osmosis Pre-Filters & Pumps

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Thanks!

For more information visit: grandforksgov.com

Regional WTP Tour –tomorrow Starting at 8AM