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Pima County Regional

Optimization Master Plan

Pima County Regional

Optimization Master Plan

Arizona County Engineers Association

Wickenburg, Arizona

January 10, 2008

Arizona County Engineers Association

Wickenburg, Arizona

January 10, 2008

Michael Gritzuk, P.E., Director,Pima County Regional Wastewater

Reclamation Department

Michael Gritzuk, P.E., Director,Pima County Regional Wastewater

Reclamation DepartmentNORTHAeration Basins

Clarifiers

Administration Building

Central Lab Building

San

ta Cru

z River

Disinfection

Preliminary Treatment

Existing Roger Road WWTP

Approximately 48 acres

Water ReclamationCampus

Approximately 41 acres

Proposed extent of screen

enclosure

Existing and Expanded Ina Road WPCF

Approximately 160 acres

Sports Park

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Roger Road WWTP

Ina Road WPCF

Green Valley WWTF

Pima County Fairgrounds WWTF

Avra Valley WWTF

Corona de Tucson WWTF

Arivaca Junction WWTF

Marana WWTF

Mt. Lemmon WWTF

Rillito Vista WWTF

Randolph Park WRF

PCRWRDTreatmentFacilities

PCRWRDTreatmentFacilities

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22

33

44

55

66

77

88

99

1010

1111

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Ina Road WPCF

Roger Road WWTP

Ina Road WPCFSewer Basin =

198 square miles

Roger Road WWTP

Sewer Basin =275 square

miles

TheMetropolitan

SewerageSystem

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Regional Optimization Master Plan Goals

Regional Optimization Master Plan Goals

• Current and future regulatory compliance

• Meet capacity needs to 2030

• Upgrade / rehabilitate aging infrastructure

• State-of-the-art technology

• Staff-friendly

• Automation

• Community acceptance

• Current and future regulatory compliance

• Meet capacity needs to 2030

• Upgrade / rehabilitate aging infrastructure

• State-of-the-art technology

• Staff-friendly

• Automation

• Community acceptance

N2 N2 O2O2

Clarifier

Waste SludgeRecycle Sludge

Ferment-ation

FirstAnoxic

Nitrification SecondAnoxic

Re-aeration

1 2 3 4 5

5-stage Bardenpho process (Source: EIMCO Water Technologies)

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Regional Optimization Master Plan Scope of Work

Regional Optimization Master Plan Scope of Work

Develop the optimal treatment process and plan to comply with regulatory requirements to reduce total nitrogen concentrations in discharged effluent

Master plan foreseeable future regulatory requirements

Determine the long-term capacity needs of the County metropolitan facilities, conveyance system and outlying growth areas

Develop the optimal treatment process and plan to comply with regulatory requirements to reduce total nitrogen concentrations in discharged effluent

Master plan foreseeable future regulatory requirements

Determine the long-term capacity needs of the County metropolitan facilities, conveyance system and outlying growth areas

Ina Road WPCF HeadworksIna Road WPCF Headworks

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Regional Optimization Master Plan Scope of Services

Regional Optimization Master Plan Scope of Services

Develop long-term plan for the treatment, handling and reuse of system bio-solids and bio-gas

Develop a detailed implementation schedule to meet regulatory implementation deadlines and the optimization master plan

Develop a financial plan to support the system’s regulatory and other needs for the next fifteen years

Develop long-term plan for the treatment, handling and reuse of system bio-solids and bio-gas

Develop a detailed implementation schedule to meet regulatory implementation deadlines and the optimization master plan

Develop a financial plan to support the system’s regulatory and other needs for the next fifteen years

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Regulatory Implementation Requirements to Reduce Total

Nitrogen Concentrations

Regulatory Implementation Requirements to Reduce Total

Nitrogen ConcentrationsIna Road WPCF Roger Road WWTP

Complete initial engineering study

Recommendation for upgrading treatment plants

Submit recommended

plan letter to ADEQ

February 1, 2007 January 30, 2007

Award contract for construction

December 31, 2010 January 30, 2011

Treatment of effluent to non-toxic nitrogen levels

January 30, 2014 January 30, 2015

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ROMP PlanROMP Plan

Expand Ina Road WPCF to 50 mgd

Construct new 32 mgd Water Reclamation Campus (in vicinity of existing Roger Road WWTP)

Plant Interconnect – 28 mgd average, 72 mgd peak flow

Decommission existing 41 mgd Roger Road WWTP

Ina Road WPCFIna Road WPCF Roger Road WWTPRoger Road WWTP

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ROMP Cost Estimate (2006 dollars)ROMP Cost Estimate (2006 dollars)

Ina Road WPCF Upgrade/Expansion $243,900,000

Electrical Upgrades $35,000,000

Plant Interconnect $22,300,000

Water Reclamation Campus $211,000,000

Roger Road WWTP Demolition $23,800,000

Total Estimated Cost $536,000,000

Cost estimate includes design costs, UV disinfection and 5% contingency.Cost estimate includes design costs, UV disinfection and 5% contingency.

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Ina Road WPCF Ina Road WPCF

• Expand treatment capacity to 50 mgd

Convert existing process to Bardenpho process

Additional 12.5 mgd expansion

Most cost-effective utilization of existing headworks capacity of 50 mgd

• Centralized biosolids processing and handling

Reduces overall cost

Provides for co-generation bio-gas utilization at one location

Provides one point of distribution of final product

• Expand treatment capacity to 50 mgd

Convert existing process to Bardenpho process

Additional 12.5 mgd expansion

Most cost-effective utilization of existing headworks capacity of 50 mgd

• Centralized biosolids processing and handling

Reduces overall cost

Provides for co-generation bio-gas utilization at one location

Provides one point of distribution of final product

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50 MGD Ina Road RWRFOverall Plant Aerial View with Screen Enclosure

50 MGD Ina Road RWRFOverall Plant Aerial View with Screen Enclosure

Proposed extent of screen

enclosure

Existing and Expanded

Ina Road RWRF Approximately 160 acres

Bardenpho Treatment Units

EXISTING

Primary Clarifier

Secondary Clarifiers

Digesters

Thickener Tanks

Enhanced Chlorination

PROPOSED:

SportsPark

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50 MGD Ina Road WPCF Screen Enclosure Concept, Interior View

50 MGD Ina Road WPCF Screen Enclosure Concept, Interior View

Wire mesh screen

South facing solar panels w/perimeter lighting

Cor-ten steel frame

Natural stone gabion base

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NORTHAeration Basins

Clarifiers

Administration Building

Central Lab Building

San

ta Cru

z River

32 MGD Water Reclamation CampusOverall Aerial View

32 MGD Water Reclamation CampusOverall Aerial View

Disinfection

Preliminary Treatment

Existing Roger Road WWTP

Approximately 48 acres

Water Reclamation Campus

Approximately 41 acres

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•Recycled content aluminum shell with natural finish

•West façade perforated for sun control with view maintained

•Solar collection capacity over roof surface

Administration Building

Central Lab Building

Parking

32 MGD Water Reclamation Campus Admin. and Central Lab Building Concept Aerial

View

32 MGD Water Reclamation Campus Admin. and Central Lab Building Concept Aerial

View

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Aeration Tanks

Clarifiers Support Building

Support Buildings

Santa Cruz River

32 MGD Water Reclamation Campus Support Building and Aeration Tank Concepts

32 MGD Water Reclamation Campus Support Building and Aeration Tank Concepts

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32 MGD Water Reclamation CampusAdmin. and Central Lab Building

32 MGD Water Reclamation CampusAdmin. and Central Lab Building

Portico at east face of buildingsfacing athletic fields

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2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

INA Road W PCF 50 mgd

Power Plant (Ina Road W PCF)

Water Reclamation Cam pus 32 mgd

Dem olish existing plant

Central Laboratory (Water Reclamation Campus)

Thermophilic Digestion(Mesophilic Digestion)

Design / Approval Construction Acceptance / Startup Testing

?

?

?

?

Implementation ScheduleImplementation Schedule

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

INA Road W PCF 50 mgdINA Road W PCF 50 mgd

Power Plant (Ina Road W PCF)

Power Plant (Ina Road W PCF)

Water Reclamation Campus 32 mgd

Water Reclamation Campus 32 mgd

Demolish existing plantDemolish existing plant

Central Laboratory (Water Reclamation Campus)

Central Laboratory (Water Reclamation Campus)

Thermophilic Digestion(Mesophilic Digestion)

Design / Approval Construction Acceptance / Startup Testing

?

?

?

?

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ROMP Implementation CostsROMP Implementation Costs

Current Estimated Cost (2006 dollars): $536 million

Cost Inflation (assuming an inflation rate of 5% over 15 years): $719 million

Bonding / Debt Service $1+ billion

Current Estimated Cost (2006 dollars): $536 million

Cost Inflation (assuming an inflation rate of 5% over 15 years): $719 million

Bonding / Debt Service $1+ billion

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Possible Community EnhancementsPossible Community Enhancements

Park enhancements

Regional / International Sports Complex

Economic development

Environmental enhancement

Water Reclamation Campus

Study underway

Park enhancements

Regional / International Sports Complex

Economic development

Environmental enhancement

Water Reclamation Campus

Study underway

Existing WWTPExisting WWTP

SoftballDiamondsSoftballDiamonds

BaseballDiamondsBaseballDiamonds

SoccerFieldsSoccerFields

CommercialDevelopmentCommercialDevelopment

WetlandsWetlands

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ROMP Procurement

Schedule

ROMP Procurement

ScheduleNORTHAeration Basins

Clarifiers

Administration Building

Central Lab Building

San

ta Cru

z River

Disinfection

Preliminary Treatment

Existing Roger Road WWTP

Approximately 48 acres

Water ReclamationCampus

Approximately 41 acres

Proposed extent of screen

enclosure

Existing and Expanded Ina Road WPCF

Approximately 160 acres

Sports Park

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Plant Interconnect – Roger Road WWTP to Ina Road WPCF

Plant Interconnect – Roger Road WWTP to Ina Road WPCF

Design Consultant – Brown & Caldwell

Contract : June 2007

Contruction Manager at Risk: Contractor selected,under negotiations

Project Management: PCRWRD staff

Full-time Inspection: To be determined

Design Consultant – Brown & Caldwell

Contract : June 2007

Contruction Manager at Risk: Contractor selected,under negotiations

Project Management: PCRWRD staff

Full-time Inspection: To be determined

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Design Consultant

RFQ advertised: October 2007

Selection process: Underway

Consultant selected: February 2008

Complete negotiations & NTP: April 2008

Construction Manager at Risk

RFQ advertised: December 2007

Anticipate contract: March 2008

Project Management: To be determined

Full-time Inspection: To be determined

Design Consultant

RFQ advertised: October 2007

Selection process: Underway

Consultant selected: February 2008

Complete negotiations & NTP: April 2008

Construction Manager at Risk

RFQ advertised: December 2007

Anticipate contract: March 2008

Project Management: To be determined

Full-time Inspection: To be determined

Ina Road Upgrade/Expansion DesignIna Road Upgrade/Expansion Design

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Water Reclamation CampusWater Reclamation Campus

Procurement Method Decided: Summer 2008Examples of methods to be evaluated:

Design Build (DB)

Design Build Operate (DBO)

Design Build Finance Operate (DBFO)

Others?

RFQ Advertisement: Fall 2008

Project Management: To be determined

Full-time Inspection: To be determined

Procurement Method Decided: Summer 2008Examples of methods to be evaluated:

Design Build (DB)

Design Build Operate (DBO)

Design Build Finance Operate (DBFO)

Others?

RFQ Advertisement: Fall 2008

Project Management: To be determined

Full-time Inspection: To be determined