Citizens Guide Wastewater

CITIZENS GUIDE WASTEWATER OPTIONS January - February 2016

CITIZENS’ GUIDE to Wastewater Alternatives January – February 2016 2

CONTENTS

INTRODUCTION ........................................................................................................................... 3

WHERE DO THINGS STAND? ..................................................................................................... 4

WHAT ARE THE BASICS OF WASTEWATER TREATMENT? ................................................ 5

SEVEN WASTEWATER TREATMENT ALTERNATIVES FOR THE CORE AREA ..................................................................................... 8

ONE PLANT WITH SECONDARY TREATMENT ROCK BAY .....................................................................................................................................10

ONE PLANT WITH TERTIARY TREATMENT ROCK BAY .....................................................................................................................................13

TWO PLANT ROCK BAY + COLWOOD ...........................................................................................................16

THREE PLANT SECONDARY TREATMENT ROCK BAY + COLWOOD + ESQUIMALT NATION .............................................................19

THREE PLANT TERTIARY TREATMENT ROCK BAY + COLWOOD + ESQUIMALT NATION .............................................................22

FOUR PLANT ROCK BAY + COLWOOD + ESQUIMALT NATION + EAST SAANICH ..........................25

SEVEN PLANT ROCK BAY + COLWOOD + EAST SAANICH + SAANICH CORE + ESQUIMALT NATION + LANGFORD + VIEW ROYAL .....................................................28

SOLIDS PROCESSING FOR THE CORE AREA ......................................................................32


INTRODUCTION The future of wastewater treatment is of critical importance.

WHY DO WE NEED TO TREAT WASTEWATER?In order to meet federal and provincial laws, and to ensure the health of citizens and our marine environments, we must treat our wastewater.

WHO DOES THIS AFFECT, WHY AND WHEN?We need a new plan to treat wastewater for the Core Area of the CRD. This includes the following communities: Colwood, Esquimalt, Esquimalt Nation, Langford, Oak Bay, Saanich, Songhees Nation, Victoria, and View Royal. The Core Area Liquid Waste Management Committee must decide on a wastewater treatment plan to put forward to funders by March 31, 2016.

Through a process of municipal, public and technical input, the CRD and its committees have developed new options for wastewater treatment and general approaches to treating the solids that remain after we treat sewage. These options will form the basis for a new plan that will be in place by spring 2016. Input from citizens is critical to making the most durable and acceptable decision.

WHAT DOES THIS GUIDE DO?This guide is a non-partisan resource designed to help you think through a difficult issue in alternative ways, weighing and evaluating values, priorities, pros, cons, and tradeoffs.

In this briefing package you’ll find the following:

• Basics of Wastewater Treatment and Recovery

• Seven Wastewater Options Explained

• Resource Recovery Alternatives

• Your Opportunities to Participate


WHERE DO THINGS STAND?Who’s responsible for this process?

The Core Area Liquid Waste Management Committee (CALWMC) of the CRD is made up of a group of elected directors and First Nations leadership. The Core Area includes the municipalities of Colwood, Esquimalt, Langford, Oak Bay, Saanich, Victoria and View Royal and the Esquimalt and Songhees First Nations.

This group is leading the search for wastewater treatment solutions including a thorough technical analysis and public consultation process. The work is initiated through two sub-regional committees, Westside and Eastside Select Committees.

Why are there two committees?

The committees were struck to address the need to reflect diverse social and information needs among the participating municipalities. There is a commitment to collaboration between the committees to ensure solutions will work for the entire region.

What has been the process to date?

• Participating municipalities brought forward technically feasible sites for wastewater treatment facilities in Spring 2015.

• Citizen engagement processes on the Westside and Eastside offered a clear look at community priorities, direction on possible sites, approaches to treatment, as well as a call for more detailed information including costs, specific sites and proposed technologies.

• A team of technical consultants was tasked with a detailed engineering and economic study of possible options, their benefits, drawbacks and costs.

• Now that the consultants have completed their study, we are taking seven emerging options back to the public for a second phase of consultation.

• From January - February 2016, the public will have multiple opportunities to give input on solutions.


WHAT ARE THE BASICS OF WASTEWATER TREATMENT?

WHAT IS WASTEWATER? Wastewater is water that has been used in homes and businesses in ways that negatively impact its quality. It is largely made up of human waste, oils, grease, chemicals, dirt and soaps from sinks, showers and washing machines and effluent from industries, commercial businesses and institutions.

WHY TREAT WASTEWATER? High concentrations of pollutants from wastewater can have negative effects on fish and wildlife and can result in beach closures and restrictions on shellfish harvesting. In 2006, an environmental report commissioned by the Ministry of Environment noted the contamination of seabed sites near the outfalls. As a result, in 2006 the CRD was mandated by the B.C. Ministry of Environment to plan for and initiate secondary treatment for the region. In 2012, the federal government passed a law requiring all high-risk Canadian cities to provide secondary sewage treatment by 2020 at the latest. The CRD’s core area was deemed to be in the high-risk category.

TYPES OF WASTEWATER TREATMENT Proper management of wastewater ensures the protection of public health and the environment. Treatment can encompass a number of steps to clean wastewater from start to finish. Source control focuses on the reduction or elimination of contaminants before they enter the sewer system rather than treating them after they have been mixed with other wastes. The CRD has been delivering a Regional Source Control program since 1994.

Preliminary treatment removes grit (sand and gravel) and screens out coarse solids (rocks, rags, plastics, etc.) which are then sent to landfill. Preliminary screening is currently in effect at the CRD’s Clover Point and Macaulay Point pump station and outfall facilities, where wastewater is screened down to six millimetre sized particles. The screened wastewater is discharged through two deep ocean outfalls into the marine waters of Juan de Fuca Strait.

Primary treatment is a physical process where gravity is used to settle solids, and grease, oil and fat are skimmed off.

Secondary (or biological) treatment removes dissolved oxygen-demanding organic substances from wastewater by using bacteria to convert degradable organic matter into bacterial cells. The wastewater is then filtered by separating treated liquid from grown bacterial cells.

Tertiary treatment is a final process to improve the quality of the effluent discharged after the wastewater treatment process. Membrane filters are often used for tertiary treatment. Advanced oxidization or UV systems can further reduce levels of pharmaceuticals and chemicals commonly found in wastewater.


Costs of treatment: Each level of treatment adds an additional process which further improves the quality of effluent which will either be disposed of or re-used. As more processes are used, the costs of building the treatment systems goes up. This means that generally speaking a tertiary treatment facility will cost more than a secondary treatment facility if they are treating the same amount of wastewater.

Resource Recovery Wastewater is a valuable source of resources that can be captured and used throughout the treatment process. Examples of resources include: Heat: Heat produced from raw sewage can be captured at the wastewater treatment plant and used to heat the facility. Excess heat energy can also be distributed throughout the local community to heat homes and buildings using a District Energy System. Solids in wastewater are a valuable source of nutrients. There are two approaches to solids treatment that are being considered for the Core Area wastewater project:

Anaerobic Digestion: Is the digestion of organic solid materials in wastewater in the absence of oxygen. The anaerobic digestion treatment process produces biogas, which can be used as a fuel source.

Gasification: Is a process that converts organic materials such as wastewater sludge, wood waste and kitchen scraps, into carbon monoxide, hydrogen and carbon dioxide. This is achieved by reacting the material at high temperatures without combustion, with a controlled amount of oxygen and/or steam, to produce a gas mixture called syngas.

The solids treatment process provides several opportunities for resource recovery:

Biogas: Residual solids are often treated using anaerobic digestion to stabilize and reduce solids, kill pathogens, and generate methane gas (biogas) for use onsite in the plant or offsite in the natural gas distribution system.

Phosphate: During the residual solids treatment process struvite, which is a form of phosphate, can be extracted and then used in fertilizer.

Solids: Wastewater residual solids that have been treated to reduce the volume, kill pathogens and have much of the water removed. These biosolids produced at CRD facilities can be used as a fuel substitute for cement kilns or for other beneficial uses.

Curie Road Pump Station


The project is guided by a set of goals and commitments that have been identified by CRD staff, elected directors, and informed by citizen and stakeholder input.

THE GOALS ARE TO: • Meet or exceed federal regulations for

secondary treatment by December 31, 2020• Minimize costs to residents and businesses

(life cycle cost) and provide value for money • Produce an innovative project that brings in

costs at less than original estimates• Optimize opportunities for resource recovery

to accomplish substantial net environmental benefit and reduce operating costs

• Minimize greenhouse gas production through the development, construction and operation phases and ensure best practice for climate change mitigation

THE COMMITMENTS ARE TO: • Develop and implement the project in a

transparent manner and engage the public throughout the process;

• Deliver a solution that adds value to the surrounding community and enhances the livability of neighbourhoods;

• Deliver solutions that are safe and resilient to earthquakes, tsunamis, sea level rise and storm surges;

• Develop innovative solutions that account for and respond to future challenges, demands and opportunities, including being open to investigating integration of other parts of the waste stream if doing so offers the opportunities to optimize other goals and commitments in the future; and

• Minimize greenhouse gas production through the development, construction and operation phases and ensure best practice for climate change mitigation

Project Charter – What Are the Criteria Guiding the Work?


SEVEN WASTEWATER TREATMENT ALTERNATIVES FOR THE CORE AREAThe following section identifies seven alternatives to wastewater treatment and recovery for the Core Area municipalities of the CRD. We will describe each option in plain language including its key features, its benefits and implications. We also want to let you know the criteria and goals for this work.

BASE CRITERIA FOR ALL OPTIONSEach of these alternatives is based on criteria identified by elected directors, citizens and a range of community and technical stakeholders.

ALL OPTIONS WILL: • Meet or exceed government regulations;

• Provide the highest level of odour and noise control;

• Be able to withstand challenges posed by estimated sea level rise, seismic activity and safe distances from residential homes and public spaces;

• Balance environmental benefit with cost; and

• Add benefit to host communities, including meaningful neighbourhood design and potential for needed amenities and co-location with other organizations or community uses.

OTHER CONSIDERATIONS:• They represent a range of technologies for treatment and solids processing

identified by technical experts with ideas and input from citizens;

• They provide a range of alternatives to meet the questions and ideas of many participants with diverse perspectives; and

• They ARE NOT fully designed or shovel ready, but they represent approaches to meet our provincial and federal commitments and to bring our infrastructure into the 21st century. Through design, rezoning and community consultation, we will shape these plants.

Columbia Boulevard Wastewater Treatment Support Facility, Oregon


HOW IS THE INFORMATION PRESENTED? Each option will present key information, benefits and implications.

SITES: • The sites proposed for each option will be identified as specifically as possible.

COSTS: • The costs are estimated looking at the initial costs to build – “infrastructure” as

well as operating and management costs, and the potential to recover revenues through water and energy re-use.

HEAT AND WATER RECOVERY: • The options all provide varying levels of capacity to harness heat and water

for reuse.

PIPES: • We will describe how much infrastructure, either retrofitting or new piping,

is needed for each option.

OUTFALLS: • We will show where and how water that is not reused is returned to the ocean.

Each option must provide access to ocean outfalls to allow for extreme flows during wet weather periods.

Brightwater Wastewater Treatment Center, WA


ONE PLANT WITH SECONDARY TREATMENT ROCK BAY SUMMARY: This 1 plant option has a treatment plant to service all of the Core Area in Rock Bay. This treatment plant is designed to treat wastewater to a secondary level before being released through the ocean outfalls. This plan has some additional tertiary treatment to allow for the reuse of water for irrigation, toilet flushing and other uses, close to the facility. Solids resource recovery could take place at Rock Bay or potentially at Hartland Landfill.

1A


David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

t

Skinner St

Tyee Rd

Blanshard

St

Cat

herin

e St

CRD - Parks & Environmental Services - Environmental Engineering - Dec 1, 2015 - Technologist: SR/JPB - Map Document: CALWMCMediaPlantOptionsSites.mxd

Projection: UTM ZONE 10N, NAD83

Option 1a,1b, 2, 3 & 4 Victoria - Rock Bay and Garbally Landing

CRD Sanitary Trunk Pleasant St Site

Bridge St Site

David St Site

Store St SiteDISCLAIMERThis map is for general information and may containinaccuracies.

0 100 200Metres

ROCK BAY

OPTION 1A: PROPOSED SITE LOCATIONS VICTORIA

• Victoria Public Works Yard, 417 Garbally Road, Victoria and/ or

• Rock Bay / Port Ellice – near Pleasant, David and Turner Streets (owned privately)

• or 2140 Store Street (owned by Transport Canada/ BC Hydro and Matullia)

OUTFALL:

• Clover Point (back up at Macaulay Point)


Estimated Capital Costs $1.031 billion

Estimated Annual Operating Costs by 2030 $21.8 million

Estimated Annual Resource Income (heat/water) by 2030 Up to $0.9 million

Water Quality after Treatment for Core Area 90% secondary & 10% tertiary

Estimated Length of New Pipes Required 16.7 km

Potential Number of Heat Recovery Systems 1

Potential Number of Water Re-use systems 1

Carbon and Energy Footprint Rank Lowest carbon and energy footprint among all options.

BENEFITS: • Meets government regulations.

• It is the simplest system to operate.

• Water re-use and heat recovery potential around facility.

• Least amount of conveyance and pipe infrastructure required.

• Lowest cost overall.

• Available sites are suitable from a technical perspective and align with public input to date.

IMPLICATIONS: • Does not offer the highest level

of treatment.

• Largest single facility footprint of the seven main options. Approximately 10 acres.

OPTION 1A: KEY METRICS AND CONSIDERATIONS

For more detailed information, including a breakdown of costs and deeper technical analysis, please see the technical report: www.CoreAreaWastewater.ca


ONE PLANT WITH TERTIARY TREATMENT ROCK BAY SUMMARY: This 1 plant option has a treatment plant to service all of the Core Area in Rock Bay. This option is designed to provide all flows with a tertiary level of treatment to improve water quality before discharging through the ocean outfall. This option, designed to provide a tertiary level of treatment, allows for the reuse of water for irrigation, toilet flushing and other uses close to the facility. Solids resource recovery can take place at Rock Bay or potentially at Hartland Landfill.

1B


David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

t

Skinner St

Tyee Rd

Blanshard

St

Cat

herin

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Bridge St Site

David St Site


0 100 200Metres

ROCK BAY

OPTION 1B: PROPOSED SITE LOCATIONS VICTORIA




OUTFALLS:



BENEFITS: • Can treat all wastewater in the region

to a tertiary standard.

• Opportunities for water reuse and heat recovery in the immediate neighbourhood regions.

• Available sites are suitable from a technical perspective and align well with public input to date.

• Least amount of conveyance and pipe infrastructure required.

IMPLICATIONS: • Added capital and operating costs

associated with higher level of treatment.

• Like 1a, presents the largest single facility footprint of the seven main options, approximately 10 acres.



Estimated Annual Resource Income (heat/ water) by 2030 Up to $0.9 million

Water Quality after Treatment for Core Area 100% tertiary



Potential Number of Water Re-use systems 1

Carbon and Energy Footprint Rank 3rd lowest carbon and energy footprint overall

OPTION 1B: KEY METRICS AND CONSIDERATIONS



TWO PLANT ROCK BAY + COLWOODSUMMARY: This 2 plant option has treatment plants located in Colwood and Rock Bay. The Colwood treatment plant would treat Colwood flows to a tertiary level for re-use around the facility or for ground discharge (i.e., streams, aquifers). The Rock Bay treatment plant would service the remainder of the Core Area and treat flows to a secondary level of treatment before discharging through the Clover Point outfall. The Rock Bay plant includes capacity to back up Colwood flows and facility.

2


David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

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Skinner St

Tyee Rd

Blanshard

St

Cat

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Bridge St Site

David St Site


0 100 200Metres

ROCK BAY

Facility location within sitehas not been determined

TOWN OFVIEW

ROYAL

CITY OFCOLWOOD

CITY OFLANGFORD

Isla

ndH

wy

Goldstream Ave

Sooke RdCRD - Parks & Environmental Services - Environmental Engineering - Dec 1, 2015 - Technologist: SR/JPB - Map Document: CALWMCMediaPlantOptionsSites.mxd


Option 2, 3 & 4 Colwood - Juan de Fuca Recreation

CRD Sanitary Trunk

Municipal Boundary

Juan de Fuca Recreation Colwood Park and Ride

DISCLAIMERThis map is for general information and may containinaccuracies.

0 100 200Metres

COLWOOD

OPTION 2: PROPOSED SITE LOCATIONS VICTORIA




COLWOOD

• Juan de Fuca Recreation Centre, 1759 Island Highway, (publicly-owned)

• or Colwood Park and Ride, Ocean Boulevard and Island Highway (publicly-owned)

OUTFALLS:



BENEFITS: • This option set represents a notable

increase in water reuse from the 1-plant option with minimal extra conveyance infrastructure.

• There are water reuse systems possible at both Rock Bay and Colwood.

• Heat recovery systems possible in Colwood (e.g. civic recreational facilities) and next to the treated outfall route from Rock Bay to Clover point.

• Available sites are suitable from a technical perspective and align with public input to date.

• Both Rock Bay and Colwood are both situated in growth centers, one mixed-use and the other primarily industrial.

• Resource incomes for the 2 plant option demonstrate the most cost- effective water reuse approach.

IMPLICATIONS: • The Colwood plant itself requires minimal

new conveyance infrastructure but requires redundant capacity at Rock Bay to avoid a second outfall.

• A central plant at Rock Bay plus tertiary plant in Colwood increases capital and operating costs for expanded water reuse; capital and operating costs both rank 2nd among the option sets.

• The two-plant option offers 20% tertiary treatment across the region. This is an improvement over option 1a, but does not rank among the highest levels of treatment.



Estimated Annual Resource Income (heat, water) by 2030 Up to $2.4 million

Water Quality after Treatment for Core Area 20% tertiary for water reuse. 80% secondary


Potential Number of Heat Recovery systems 2

Potential Number of Water Re-Use Systems 2

Carbon and Energy Footprint Rank 2nd lowest energy and carbon footprint overall

OPTION 2: KEY METRICS AND CONSIDERATIONS

For more detailed information, including a breakdown of costs and deeper technical analysis, please see the technical report:

www.CoreAreaWastewater.ca


THREE PLANT SECONDARY TREATMENT ROCK BAY + COLWOOD + ESQUIMALT NATION SUMMARY: This 3 plant option has treatment plants located in Colwood, Esquimalt Nation and Rock Bay. All of the plants in this option are designed to provide a secondary level of treatment. The plant at Colwood would treat all Colwood and Langford wastewater flows and would discharge out its own outfall into Royal Bay. All wastewater would be treated to a secondary level and then released at the ocean outfalls. This plan includes some additional tertiary treatment to allow for the reuse of water for irrigation, toilet flushing and other uses, close to the facility at Esquimalt and Rock Bay. Solids resource recovery can take place on site at Rock Bay or potentially at Hartland Landfill.

3A


David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

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Skinner St

Tyee Rd

Blanshard

St

Cat

herin

e St





Bridge St Site

David St Site


0 100 200Metres

ROCK BAY


TOWN OFVIEW

ROYAL

CITY OFCOLWOOD

CITY OFLANGFORD

Isla

ndH

wy

Goldstream Ave




CRD Sanitary Trunk

Municipal Boundary



0 100 200Metres

COLWOOD

SONGHEESNATION

ESQUIMALTNATION

TOWNSHIP OFESQUIMALT

TOWN OFVIEW ROYAL

Craigflower Rd

Adm

irals

Rd



Option 3 Esquimalt Nation

CRD Sanitary Trunk

Municipal Boundary

Esquimalt Nation


0 100 200Metres

ESQUIMALT

OPTION 3A: PROPOSED SITE LOCATIONS VICTORIA




COLWOOD

• Juan de Fuca Recreation Centre, 1759 Island Highway, (publically owned)


ESQUIMALT

• Esquimalt First Nations site, 1400 Block Admirals Road

OUTFALLS:

• Clover Point, Macaulay Point, Royal Bay


Estimated Capital Costs $ 1.125 billion

Estimated Operating Costs by 2030 $23 million


Water Quality after Treatment for Core Area100% secondary at Colwood. 90% secondary and 10% tertiary for water reuse at Rock Bay and Esquimalt Nation


Potential Number of Heat Recovery Systems 5th


Carbon and Energy Footprint Rank 4th lowest carbon footprint

BENEFITS: • Meets government regulations.

• Wate re-use systems at Rock Bay and Esquimalt Nation for use in immediate areas.

• Heat recovery opportunities for all three facilities.

• Fourth highest ranking for resource income generated by heat and water,

IMPLICATIONS: • The Colwood and Langford plants requires

new infrastructure and a new outfall.

• Does not provide as high a level of treatment as two plant option and is more expensive.

OPTION 3A: KEY METRICS AND CONSIDERATIONS



THREE PLANT TERTIARY TREATMENT ROCK BAY + COLWOOD + ESQUIMALT NATION SUMMARY: This 3 plant tertiary option has treatment plants located in Colwood, Esquimalt Nation and Rock Bay. The plant at Colwood would treat all Colwood and Langford wastewater flows to a tertiary level of treatment for water reuse around the plant with all unused flows discharged out its own outfall into Royal Bay. Flows would be treated at a secondary level at Rock Bay and Esquimalt Nation facilities, with some additional tertiary treatment for local re-use around the facilities. Solids resource recovery can take place on site at Rock Bay or potentially at Hartland Landfill.

3B


OPTION 3B: PROPOSED SITE LOCATIONS VICTORIA




COLWOOD

• Juan de Fuca Recreation Centre, 1759 Island Highway (publicly-owned)

• or Colwood Park and Ride, Ocean Boulevard and Island Highway (publicly- owned)

ESQUIMALT


OUTFALLS:


David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

t

Skinner St

Tyee Rd

Blanshard

St

Cat

herin

e St





Bridge St Site

David St Site


0 100 200Metres

ROCK BAY


TOWN OFVIEW

ROYAL

CITY OFCOLWOOD

CITY OFLANGFORD

Isla

ndH

wy

Goldstream Ave




CRD Sanitary Trunk

Municipal Boundary



0 100 200Metres

COLWOOD

SONGHEESNATION

ESQUIMALTNATION


TOWN OFVIEW ROYAL

Craigflower Rd

Adm

irals

Rd




CRD Sanitary Trunk

Municipal Boundary

Esquimalt Nation


0 100 200Metres

ESQUIMALT


OPTION 3B: KEY METRICS AND CONSIDERATIONS


Estimated Operating Costs by 2030 $24 million


Water Quality after Treatment for Core Area100% tertiary at Colwood. 90% secondary, 10% tertiary for water reuse at Rock Bay & Esquimalt Nation


Possible Number of Heat Recovery Systems 3

Possible Number of Water Re-use Systems 3

Carbon and Energy Footprint Rank 6th lowest footprint overall


BENEFITS: • Exceeds government regulations with

a higher level of treatment than 3 plant secondary.

• Wate re-use and heat resuse systems at all three facilities.

• Tied for second highest projected resource income from heat and water reuse.

IMPLICATIONS: • The Colwood and Langford plants require

new infrastructure and a new outfall.

• Second to last carbon and energy ranking due to factors like infrastructure.


FOUR PLANT ROCK BAY + COLWOOD + ESQUIMALT NATION + EAST SAANICH SUMMARY: This 4 plant option located in Colwood, Rock Bay, Esquimalt Nation and East Saanich. Flows would be treated to a secondary level at Rock Bay and Esquimalt Nation treatment plants, with some additional tertiary treatment for local re-use around the facilities. The Colwood and East Saanich treatment plants would treat flows to a tertiary level for reuse around the treatment plants. Solids resource recovery could take place at Rock Bay or potentially at Hartland Landfill.

4


OPTION 4: PROPOSED SITE LOCATIONS VICTORIA




COLWOOD

• Juan de Fuca Recreation Centre, 1759 Island Highway, (publicly-owned)


EAST SAANICH – TBD

ESQUIMALT


OUTFALLS:

• Clover Point, Macaulay Point

David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

t

Skinner St

Tyee Rd

Blanshard

St

Cat

herin

e St





Bridge St Site

David St Site


0 100 200Metres

ROCK BAY


TOWN OFVIEW

ROYAL

CITY OFCOLWOOD

CITY OFLANGFORD

Isla

ndH

wy

Goldstream Ave




CRD Sanitary Trunk

Municipal Boundary



0 100 200Metres

COLWOOD

Facility location hasnot been determined

Still in discussion withLandowners

DISTRICT OFOAK BAY

DISTRICT OFSAANICH

Cedar Hill Cross Rd

Ced

arH

illR

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bour

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Richm

ondR

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Poplar

Ave

Gor

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Hea

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Option 3 & 4 Saanich - East Saanich

Municipal Boundary


0 100 200Metres

EAST SAANICH

SONGHEESNATION

ESQUIMALTNATION


TOWN OFVIEW ROYAL

Craigflower Rd

Adm

irals

Rd




CRD Sanitary Trunk

Municipal Boundary

Esquimalt Nation


0 100 200Metres

ESQUIMALT





Water Quality after Treatment for Core Area 25% tertiary for water reuse, 75% secondary

Estimated Length of New Pipes Required 66.8km (includes reuse piping for Colwood and East Saanich)



Carbon and Energy Footprint Rank 5th lowest carbon and energy footprint overall

BENEFITS: • Exceeds regulations with tertiary treatment

at Colwood and East Saanich plants.

• Water re-use systems and heat recovery at all four plants.

• Potential resource incomes for the 4 plant option show the 2nd most cost effective water re-use approach.

• With more plants we see smaller footprint for each facility.

IMPLICATIONS: • Saanich Core and East Saanich plants

require additional redundancy capacity through Rock Bay to avoid outfalls.

• This option shows 2nd highest cost.




SEVEN PLANT ROCK BAY + COLWOOD + EAST SAANICH + SAANICH CORE + ESQUIMALT NATION + LANGFORD + VIEW ROYALSUMMARY: This 7 plant option has treatment plants located in Rock Bay, Colwood, East Saanich, Saanich Core, Esquimalt, Langford and View Royal. Flows are treated on a municipal basis, however the Esquimalt treatement plant can also accomodate additional flows for Westside communities during wet weather events. The Rock Bay plant would provide the main treatment requirements for the Eastside (secondary). The East Saanich and Saanich Core treatment plants would treat flows to a tertiary level for reuse around those facilities. The Esquimalt plant would provide tertiary treatment for the flows from the two First Nations and the Town of Esquimalt. The Colwood, View Royal and Langford treatment plants would treat flows to a tertiary level for reuse around those facilities. Solids resource recovery could take place at Rock Bay or potentially at Hartland Landfill.

5



TOWNSHIP OFESQUIMALT Esquimalt Rd

Lam

pson

St

Adm

ir al s

Rd



7 Plant Option Esquimalt - Bullen Park

CRD Sanitary Trunk Bullen Park


0 100 200Metres

ESQUIMALTCITY OF

VICTORIA

DISTRICT OFSAANICH

Finlayson St

Blanshard

St

Burnside Rd W

Cloverdale Ave

Boleskine Rd

Harrie

t Rd

DouglasSt

Burnside Rd E

Saanich Rd

Obed Ave

Trans-Canada Hwy

Tillic

um R

d

CareyRd



7 Plant Option Saanich - Rudd Park

CRD Sanitary Trunk

Municipal Boundary

Rudd Park


0 100 200Metres

SAANICH CORE

David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

t

Skinner St

Tyee Rd

Blanshard

St

Cat

herin

e St





Bridge St Site

David St Site


0 100 200Metres

ROCK BAY


TOWN OFVIEW

ROYAL

CITY OFCOLWOOD

CITY OFLANGFORD

Isla

ndH

wy

Goldstream Ave




CRD Sanitary Trunk

Municipal Boundary



0 100 200Metres

COLWOOD

Facility location hasnot been determined

Still in discussion withLandowners

DISTRICT OFOAK BAY

DISTRICT OFSAANICH

Cedar Hill Cross Rd

Ced

arH

illR

d Shel

bour

ne S

t

Richm

ondR

d

Poplar

Ave

Gor

don

Hea

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Option 3 & 4 Saanich - East Saanich

Municipal Boundary


0 100 200Metres

EAST SAANICH

TOWN OFVIEW ROYAL

DISTRICT OFSAANICH

Burns

ideRd W

Helmck

enRdIsland Hwy

Trans-Canada Hwy



7 Plant Option View Royal

CRD Sanitary Trunk

Municipal Boundary

View Royal Burnside & Watkiss South


0 100 200Metres

VIEW ROYAL

CITY OFCOLWOOD

CITY OFLANGFORD

Goldstream Ave

Jack

linRd

Veterans Memorial Pky



7 Plant Option Langford

CRD Sanitary Trunk

Municipal Boundary

Langford VMP at Meaford Ave


0 100 200Metres

LANGFORD


OPTION 5: PROPOSED SITE LOCATIONSVICTORIA




COLWOOD

• Juan de Fuca Recreation Centre, 1759 Island Highway, (publically owned)


EAST SAANICH – TBD

SAANICH CORE

• Rudd Park, 3528 Irma Street (publicly-owned)

ESQUIMALT

• Bullen Field, 1140 Lyall Street (publicly-owned)

LANGFORD

• Veteran’s Memorial Way (privately owned)

VIEW ROYAL

• Burnside + Watkiss Way (BC Hydro-owned)

OUTFALLS:




Estimated Operating Costs by 2030 $26.6 million

Estimated Resource Income (heat, water) by 2030 Up to $4 million

Water Quality after Treatment for Core Area 45% tertiary for water reuse. 55% secondary



Potential Number of Water Re-use Systems 7

Carbon and Energy Footprint Rank highest energy and carbon footprint overall



BENEFITS: • All flows meet or exceed regulations

including 45% of all flows treated to tertiary levels – six of the seven plants will provide tertiary treatment.

• Distributed treatment maximizes water reuse potential with plants located in regional growth centers.

• Provides increased resilience and reduces the local footprint of each plant.

IMPLICATIONS: • Six tertiary treatment plants coupled

with a large secondary treatment plant at Rock Bay reflect the highest capital and operating costs.

• Saanich Core and East Saanich plants require additional redundancy capacity through Rock Bay to avoid outfalls.

• Net present value for the 7 plant option is approximately 25% higher than for Option 1a.

• Resource incomes are only slightly higher than the 4 plant due to lack of demand relative to supply.


SOLIDS PROCESSING FOR THE CORE AREA This section looks at possible approaches to processing the solids that are left after wastewater treatment. We want to get your feedback on proposed sites and methods.

What are wastewater solids?

Wastewater solids are the solid materials left after wastewater is treated. The solids are separated and thickened during the treatment process. The liquid goes on to be treated separately and discharged into the ocean or reused.

Solids or residuals must be processed, offering a possibility to harness heat and other forms of energy.

What do you need to know?

• Our technical study has found that two accepted solids processing methods – gasification and anaerobic digestion – can produce energy that can be converted to electricity or other forms of usable energy.

• The overall capital and operating costs of anaerobic digestion and gasification were considered comparable in this technical study.

The study also recommends the CRD canvass the market to determine the most cost-effective and environmentally-beneficially alternatives. These are possibilities, but not proposed options.

In order to gain meaningful public input, we are using these two solids-energy recovery options to demonstrate what technologies could be used to process solids on available sites.

1. Anaerobic digestion

Anaerobic digestion breaks down and reduces sludge to produce biogas and biosolids. This process happens in a sealed, oxygen-free tank called an anaerobic digester. Depending on the system design, the resource recovered (biogas or biosolids) from this process can run a generator producing electricity and heat, be burned as a fuel in a boiler or furnace, or be cleaned and used as a natural gas replacement. What could a “digester” look like?


2. Gasification

Gasification is a process that converts the solids into a synthetic gas that can be used as fuel to generate electricity. As this process requires high temperatures, it is critical that materials that feed the gasifier can maintain the high temperatures to get energy out of the process – they must be dry. This means adding other forms of solid waste or materials like food scraps and yard waste.

What could a “gasifier” look like?

TWO POSSIBLE SITES HAVE BEEN IDENTIFIED AS FEASIBLE FOR HOSTING SOLIDS PROCESSING:Rock Bay:

David St Site

Store StSite

Pleasant StSite

Bridge StSite

Bay St Bridge

Selk

irk T

rest

le

CITY OFVICTORIA

Hillside Ave

Douglas St

Bay St

Gov

ernm

ent S

t

Skinner St

Tyee Rd

Blanshard

St

Cat

herin

e St





Bridge St Site

David St Site


0 100 200Metres


Hartland Landfill:

Regardless of the wastewater treatment option that is chosen, there will be a central location for solids treatment. For either of the two sites, solids will need to be moved to the site via truck or pipe.

Key Considerations:

• Hartland landfill already receives different solid wastes, which could help integrate solid waste into wastewater solids processing. This would help facilitate gasification.

• Integrating waste at Rock Bay could increase land requirements.

• Industrial land in Rock Bay is about five times more costly (per hectare) than land at Hartland Landfill.

• Processing all wastewater solids at Rock Bay would eliminate trucking/pumping to Hartland Landfill.

• Having wastewater solids treatment at Rock Bay would avoid conveyancing costs.

• Excess energy from the landfill energy generation facility could be used to off-set operating costs.


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Citizens Guide Wastewater

Documents