Pigeon Lake Regional Wastewater Strategy and Master Plan ...

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Pigeon Lake Wastewater Strategy and Master Plan

Public and Stakeholder Consultation Neighbourhood Information Meeting

Pigeon Lake Regional Wastewater Strategy and Master Plan

Welcome and Introduction of Steering Committee Members and Project Team

1

Meeting Purpose 1.

To provide an opportunity for property owners from the summer villages and counties to view the progress of the study to date

2.

To view and comment on the options under consideration.

3.

To provide and opportunity for questions and answers in a localized setting where individual issues and concerns can be addressed.

Project Commencement

Steering Committee Introduction Remarks

2

Project Objectives To develop a regional wastewater strategy and master plan for the Pigeon Lake watershed area as well as the Dorchester Development.

Complete a feasibility level economically based assessment that: • • • • •

defines logical project boundaries; provides conceptual cost estimates for options; provides recommended project phases; considers community growth requirements; and provides recommendations for a viable governance model(s).

Public Communications Overview Overview and Summary of Common Themes (15 completed) • Increasing concern for the environmental health of the lake • Unprecedented growth and increasing density • Status quo is not an option for most • Complete cost for the entire system and ongoing fees for maintenance and upkeep are important

3

Public Communications Overview Overview and Summary of Common Themes (con’t) • • •

Devise a funding solution that is fair to all – eg. user pay proportionally A recommended solution bought into by all is a necessity. If a mutually agreed solution with 100% buy-in is not achieved, mandate it and make all stakeholders contribute – including the provincial government.

Project Summary to Date • Project Need • Wastewater Management Options • Funding Opportunities • Planning Criteria • Master Plan Options • Next Steps and Input

4

Project Need • Urbanization of lakeshore areas • Private sewage systems costly and risky • Intensifying development • Changing property use – Seasonal to Permanent • Protect the lake • Act now rather then react later

Existing On-Site Systems • Holding Tanks - Truck Haul - Need Disposal Facility - Leakage?

• Disposal Fields -

Suitable Low Flow / Low Density Requires Suitable Soil Conditions Requires Maintenance Difficult to Monitor

• Outhouses

5

Disposal Field Operations Soil Structure VADOSE ZONE

SATURATED ZONE

Operating Field

VADOSE ZONE

SATURATED ZONE

Failed Field

Ground Saturation

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Beginning Assumption Some how we need to dispose of our wastewater. (We might even have to treat it!)

Wastewater Planning • Good assessment of the need (what are the real problems? What are the treatment objectives) • Good information regarding various alternatives. • Good community involvement  Buying into the need  Address the problems to select an alternative

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Study Area

Existing and Future Development

8

Background Data Sources • Previous Studies Subject Area Similar Areas Various Guidelines

• Data Collection Forms • Environmental Standards • Public Communications

Wastewater Management System Local Collection

Regional Transmission

Treatment and Effluent Disposal

Private Public

9

Option Pre-Screening • Critical initial step • Consider all options • Gain stakeholder support of decisions • Shortlist for analysis

Pre-Screening - Options • Local Collection • Transmission - WWTF Location • Treatment Process • Effluent Management

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Pre-Screening – Local Collection • None • Haulage • Pressure Sewer – Grinder • Pressure Sewer – Effluent Pump • Small Diameter Gravity • Conventional Gravity • Combined Systems

Local Collection Options Pressure

Combined

Gravity

Truck Haul

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Pre-Screening – Transmission • Status Quo • One Treatment Facility • Two Treatment Facilities • Decentralized Facilities • Outside Pigeon Lake Area • Combinations

Pre-Screening – Treatment Process • Status Quo • Stabilization Lagoons • Aerated Lagoons • Conventional Mechanical Plants • Advanced Mechanical Plants • Natural Systems • Large Scale Regional Treatment

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Pre-Screening – Effluent Management •

Status Quo



Pigeon Lake Creek and/or Pipestone Creek



Battle River



Irrigation



Infiltration Basins



Constructed Wetlands - Indirect lake Discharge



At-grade Forest Dispersion



Snowfluent



Deep Well Injection

Wastewater Management Options

Local Collection

Regional Transmission

• Haulage

• One Treatment Facility

• Stabilization Lagoons

• Two Treatment Facilities

• Aerated Lagoons

• Decentralized Facilities

• Conventional Mechanical Plants

• Pressure Sewer – Grinder • Pressure Sewer – Effluent Pump • Conventional Gravity • Combined Systems

• Combinations

Treatment

• Advanced Mechanical Plants

Effluent Mngmt. • Pigeon Lake Creek and/or Pipestone Creek • Battle River • Constructed Wetlands Indirect lake Discharge

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Funding Opportunities Local Collection - Private Systems • No Available Funding

Local Collection – Public Systems • Federal/Provincal CAMRIF (0 to 66%)

Regional Treatment and Transmission • Provincial Water for Life and Water/Wastewater Partnership Programs (75% to 90%)

Planning Criteria • Service Population • Wastewater Generation • Treatment Criteria • Regional Transmission • Collection Hydraulics

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Wastewater Generation Service Population • • • •

Existing Development 25 Year Projection 3 Persons per lot Seasonal Variance  25% Permanent vs. 75% Seasonal (2007)  50% Permanent vs. 50 % Seasonal (2032)  Transition Period (Spring and Fall)

Collection Criteria • Pipe and Pump Station Sized for Peak Flow • Existing Development  100% Low Pressure Sewer

• Future Development  Low Pressure  Gravity

• Haulage – Interim or Long-term

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Treatment Criteria

• Existing and Future Flows • Design Horizon – 10 Year • Treatment Objectives – Based on Receiving Environment

System Option Summary • Five Options Considered • From Large Scale to Medium • Option 1 – Extensive Regional Pipeline • Option 5 – Least Regional Piping

One Large Municipal Wastewater Treatment Plant

One to Many Treatment Facilities

Even Smaller “Cluster” Type Facilities Truck Haul

VARIOUS COMBINATIONS

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• Aerated Lagoon Upgrade • Conventional Mechanical WWTP • Advanced Mechanical WWTP

Legend Pump Station Transmission Collection Treatment

Servicing Option 1

• Aerated Lagoon Upgrade

Legend Pump Station Transmission Collection Treatment

• Aerated Lagoon • Conventional Mechanical WWTP • Advanced Mechanical WWTP

Servicing Option 2

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• No Incremental Cost to Regional Group

Legend Pump Station •

Advanced Mechanical WWTP Transmission Collection Treatment

• Aerated Lagoon • Conventional Mechanical WWTP • Advanced Mechanical WWTP

Servicing Option 3

• No Incremental Cost to Regional Group

Legend Pump Station • Advanced Mechanical WWTP Transmission Collection Treatment

Servicing Option 4

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• No Incremental Cost to Regional Group

Legend Pump Station • Advanced Mechanical WWTP Transmission Collection Treatment

• Conventional Stabilized Lagoons • Conventional Mechanical WWTP

• Conventional Stabilized Lagoons • Conventional Mechanical WWTP • Advanced Mechanical WWTP

Servicing Option 5

Summary of Required Infrastructure Option

Length of Number Collection and of Lift Transmission Stations Pipe

No. of WWTF

Option 1

80,500 m

5

1

Option 2

67,800 m

4

2

Option 3

54,400 m

1

3

Option 4

66,900 m

2

2

Option 5

48,400 m

0

4

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Summary of Regional Capital Costs Option

Treatment

Transmission

($million)

($million)

Total Regional Costs ($million)

Option 1

$6.5

$19.6

$26.1

Option 2

$9.7

$10.8

$20.5

Option 3

$18.9

$4.7

$23.6

Option 4

$31.4

$9.8

$41.2

Option 5

$23.5

$1.6

$25.1

Option 2, 3 and 5 – Add $4,500,000 for Pipeline to Falun

Operating Costs

Labour Materials Power Equipment

Treatment Regional Transmission Local Collection On-site

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Life-Cycle Cost Comparison Treatment ($000,000)

Transmission ($000,000)

Local Local – Public Private ($000,000) ($000,000) 80.2

Total ($000,000)

Truck Haul

11.3

Option 1

11.1

27.6

15.5

48.5

102.7

Option 2

16.5

15.7

15.5

48.5

96.2

Option 3

38.3

7.0

15.5

48.5

109.3

Option 4

61.0

14.0

15.5

48.5

139.0

Option 5

45.7

2.6

15.5

48.5

112.3

91.5

Summary • On-Site disposal is no longer acceptable. • New wastewater treatment solutions are required. • A long-term plan is needed to work towards. • There are a number of feasible options. • Option 2 and 4 look favourable. • Truck haul is feasible interim solution • Phasing and governance preferences?

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Next Steps • Determine Preferred Alternative(s) • Provide Staging Plan(s) • Discuss Governance Options • Implementation Timeline • Rate Implications • Municipal Decisions

QUESTIONS?

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