greater vancouver regional district s liquid waste management plan
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Greater Vancouver Regional District’s Liquid Waste Management Plan. GVRD. 21 municipalities & one electoral area Delivery of cost-effective utilities such as water, sewerage & drainage, & solid waste management Environmental stewardship & livability in the region

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Presentation Transcript
  • 21 municipalities & one electoral area
  • Delivery of cost-effective utilities such as water, sewerage & drainage, & solid waste management
  • Environmental stewardship & livability in the region
  • Area size (Land & Water) : 329,202 hectares
  • Population: 2 million
  • Annual population growth rate: 1.6%
historical context
Historical Context

The Sewerage and Drainage District and the first sewer plan date from 1914

The Rawn report recommended a sewerage plan for the growing region in the 1950s

The current LWMP provides a new path for the future

sewer system 1950

Outfall Locations:

  • Untreated Sewage to Marine/Rivers
Sewer System: 1950
estimated volume of untreated sewage discharge

First Sewerage Treatment Plants

Annacis Is. Sewerage Treatment Plants

VSA Operational Plan

Estimated Volume of Untreated Sewage Discharge
lwmp background
The LWMP is a plan under the Provincial Waste Management Act

Stage 3 and Addendum approved by all municipalities and GVRD - March 2001

Provincial Minister approved LWMP – April 2002

Federal agencies have participated in development of the Plan

BIEAP / FREMP partnership used to address Federal issues

LWMP Background
lwmp strategies
LWMP Strategies

1. Conserve Resources

2. Maintain Infrastructure and Stretch Capacity

3. Maximize Environmental Benefit per Dollar Spent

strategic context
Strategic Context

1. Conserve Resources

Pollution prevention

Water conservation

Stormwater as a resource

strategic context1
Strategic Context

2. Maintain Infrastructure and Stretch Capacity

$12 billion dollars in existing wastewater assets

strategic context2
Strategic Context

3. Maximize Environmental Benefit per Dollar Spent

Limited financial resources and affordability context

lwmp management process based on
LWMP Management Process Based On:
  • Appropriate monitoring program
  • Defensible Triggers
  • Acceptable Risk
  • Reasonable Options
  • Mutually Agreeable Timelines
process context
Process Context

A science-based approach is needed

There must be an understanding of environmental risk

The cost and benefits of options must be considered

The LWMP incorporates these into a formal upgrading trigger process

lwmp upgrading trigger process



LWMP Upgrading Trigger Process

Define and evaluate risk in consultation with Ministry of Environment, Lands and Parks & Environment Canada

Discharge(s) meets Water Quality Objectives and other established criteria

Assess options, costs, and benefits

Ongoing Review by Environmental Monitoring Committee



District Board to select appropriate responses in consultation with Ministry of Environment, Lands, and Parks & Environment Canada



Products & Pre-disposal





Receiving Environment



Surface Water





Municipal Wastewater Collection and Treatment System

treatment plants2
Treatment Plants
  • Established base level of treatment
    • Secondary to river
    • Primary to marine
  • Upgrading based on environmental need and triggers
  • Addendum No. 1 clarifies growth-driven upgrading at Iona and Lions Gate
recommendations wwtps
Recommendations - WWTPs
  • Base expansions for
    • growth, renewal, and substantial compliance
  • Investigate and monitor high loading sources
  • Assess copper reductions via water treatment
  • Evaluate U.V. at Annacis, Lulu, Northwest Langley
  • Monitor conditions and re-examine issues
source management
Source Management
  • Why:
    • Protect workers, infrastructure, WWTP processes
    • Improve biosolids quality
    • Stretch capacity of existing systems
    • Reduce effect on the environment
  • Sectors:
    • Industrial
    • Commercial & institutional
    • Residential
source and demand management1
Source and Demand Management

Emphasis on Pollution Prevention

Control of Toxic Substances Discharged to Sewer

Consistent with Canadian Environmental Protection Act (CEPA 1999)


Reduction at the Source

Substance Prohibition

Sector Control Programs

Pollution Prevention

Local Limits


Sewer Use By-law

Source Control

Water Conservation

Public Education

Pollutant Reduction

source and demand management2
Promotion of water conservation

Eliminate stormwater discharges to sanitary sewers

GVWD program to reduce copper levels

Education programs targeting green buildings, sustainable communities, residential, commercial and institutional practices

Source and Demand Management
residuals management
Residuals Management
  • The beneficial reuse of biosolids
environmental management1
Environmental Management
  • Designated WLAP water use protection is paramount
  • A receiving environment science-based approach
  • A formal process to determine upgrading needs
  • A standing multi-agency Environmental Monitoring Committee
gvrd s lwmp environmental management program
GVRD’s LWMP Environmental Management Program
  • Receiving environment effects monitoring
  • Discharge characterization
  • Ambient monitoring
  • Risk assessments
  • Options evaluation
emp monitoring components
EMP Monitoring Components
  • WWTPs (5 Plants) - monitor effluent & receiving environment
  • CSOs (50)
  • Recreational beaches (32 beaches with 120 sites)
  • Stormwater (130 watersheds)
  • Regional monitoring
  • Municipal monitoring programs
gvrd s lwmp receiving environment monitoring
GVRD’s LWMP Receiving Environment Monitoring
  • water and sediment chemistry
  • benthic invertebrate community
  • acute and chronic toxicity
  • bioaccumulation & biomagnification
  • habitat impairment & community alteration
receiving environment investigations
Receiving Environment Investigations
  • Reviewed by Environmental Monitoring Committee
  • Detailed environmental fate and effect studies
  • Long-term monitoring programs
  • All receiving waterways in the region
lwmp summary
LWMP Summary
  • A long term commitment to sustainable wastewater management
  • Action plans to address all identified issues
  • Formally reviewed on a five-year basis
  • Coordinated with other agencies including using BIEAP/FREMP as a senior level clearing house