Princeton Wastewater Servicing Study Public Information Centre #1 November 3, 2011
Presentation Agenda Study Background and Scope Existing Conditions Future Population Growth Problem/ Opportunity Statement Alternative Solutions Proposed Evaluation Criteria Consultation Next Steps 1
Study Background, Objectives and Scope Oxford County completed the Princeton Water Servicing Study in 2005. The Water Servicing Study: • Identified aquifer contamination due to discharges from existing septic systems, and • Recommended that a communal water system be constructed. The communal water system is currently under construction During the Princeton Water Servicing Study, the County received a petition signed by 130 Princeton residents, requesting that a wastewater servicing study be completed for Princeton 2
Study Background, Objectives and Scope (Cont’d) Upon receiving the petition: • Oxford County Public Works and Public Health and Emergency Services Departments reviewed all un- serviced and partially serviced villages • A priority list was developed for wastewater servicing studies based on public health and environmental concerns • Princeton was identified as having the highest priority for investigating wastewater servicing alternatives 3
Study Background, Objective and Objective (Cont’d) Princeton Wastewater Servicing Study Objective • Overall objective of the Princeton Wastewater Servicing Study is to develop a wastewater servicing plan for the Community of Princeton that is environmentally responsible, socially acceptable and economically sustainable Princeton Wastewater Servicing Study Scope: • Will conclude with the selection of a preferred solution and design concept for providing wastewater servicing to Princeton • The study is being undertaken as a Schedule ‘C’ Municipal Class Environmental Assessment • Study is expected to be completed in 2012 4
Class Environmental Assessment Process Identify problem or opportunity PHASE 1 We are here Public Information Centre No. 1 Identify and evaluate alternative solutions to the problem or opportunity PHASE 2 Public Information Centre No. 2 Select a preferred solution Identify and evaluate alternative design concepts for the preferred solution PHASE 3 Public Information Centre No. 3 Select preferred design concept Complete Environmental Study Report (ESR) PHASE 4 ESR placed on public record for review and comment Complete contract drawings and tender documents PHASE 5 Proceed to construction and operation Monitor for environmental provisions and comments 5
Existing Conditions Wastewater treatment is currently provided by on- site wastewater septic tank systems Analysis of existing septic systems was completed to: • Estimate the age of existing systems based on available records • Identify what type of replacement wastewater system could be installed on each property based on the requirements of the current Ontario Building Code 6
On-Site Wastewater Systems Conventional Septic System • Most commonly used technology, relatively low operating costs Advanced Treatment System • Higher installation and operating costs than a septic system • Can be installed in areas with poor soil conditions/ high groundwater table • Generally, smaller leaching or tile bed size is required Holding Tank • Lower cost to install, high operating cost due to need for regular pumping • Is not permitted for long term servicing of development properties where there is currently no septic system/ building 7
Existing System Age Number of Systems Between 0 and 25 Years Old 40 (19%) Number of Systems Between 25 and 35 Years 15 (7%) Old Number of Systems 35 Years Old or More 154 (74%) Total Number of Systems 209 Life span of a typical septic system is 20 to 25 years Some systems can function effectively for 35 years 8
Current Ontario Building Code Requirements Estimated Maximum Number of Properties 58 (28%) That Can Accommodate a Conventional Septic System Estimated Maximum Number of Properties 58 (28%) That Can Accommodate an Advanced Treatment System Estimated Minimum Number of Properties 93 (44%) That Cannot Accommodate a Septic System/ Advanced Treatment System. A Holding Tank Would be Required Total Number of Properties 209 9
Existing Systems Estimated number of existing systems that are less than 35 years old and meet the current Ontario Building Code requirements is 17 (8%) For systems more than 35 years that do not meet the current Ontario Building Code requirements: • It was estimated that a maximum of 46 or 22% of existing systems could be replaced by a septic system • It was estimated that a maximum of 55 or 26% of existing systems could be replaced by an advanced treatment system • It was estimated that a minimum of 91 or 44% can only be replaced by a holding tank 10
Summary of Existing Conditions Many existing septic systems will need to be replaced in the near term due to age Replacement systems will need to comply with the current Ontario Building Code It is estimated that only 22% of existing septic systems can be replaced by a new septic system. Remaining properties will require an advanced treatment system or a holding tank 11
Future Growth in Princeton Moderate growth within the existing community boundary is anticipated Existing population (residential and equivalent non-residential) is estimated to be 973 persons including 648 residents plus an equivalent industrial, commercial and institutional population Future population (residential and equivalent non- residential) is estimated to be 1,648 persons 12
Future Growth in Princeton (cont’d) Projected Population and Flow Projections future wastewater 2000 800 Projected Flow flow of 705 1500 600 Population Projected (m 3 /d) m 3 /d for the 1000 400 500 200 Community of 0 0 Princeton 2011 Future Year Population Flow Projection 13
Problem/ Opportunity Statement 192 of 209 existing systems (92% of all systems) will require replacement due to age in the short term or do not meet the requirements of the current Ontario Building Code There is existing or planned capacity available at existing wastewater treatment facilities that serve neighbouring communities that could be used to service Princeton 14
Alternative Solutions The Municipal Class EA process requires that all reasonable alternative solutions be evaluated Alternative solutions that are being considered for this study are: • Continue to provide support and public education to residents on proper operation and maintenance of their existing systems and continue to inspect existing systems • Upgrade existing systems, where required, to meet the requirements of the current Ontario Building Code • Construct a new communal wastewater collection system and treatment facility in Princeton • Construct a new communal wastewater collection system and pump wastewater for treatment to an existing neighbouring community wastewater treatment facility 15
Proposed Evaluation Criteria Natural Environment Technical Environment • Impacts on surface water resources • System complexity • Impacts on terrestrial resources • Increase in operating requirements • Impacts on groundwater resources • The need for additional studies Social Environment • Approval requirements • Implementation and Operational • Impacts on adjacent land owners Risk and users during long term operation of alternative Economic Environment • Impacts on adjacent land owners • Capital cost and users during construction • Annual operating and maintenance • Construction impacts costs • Impacts on future development • Life-cycle costs • Potential for odour emissions • Need for property acquisition • Risk to human health 16
Consultation Agency and Stakeholders Study Mailing List Project Notices Public Information Centres Oxford County and Township of Blandford- Blenheim Websites Tracking your comments 17
Next Steps Receive and consider public input Evaluate alternative solutions Hold Public Information Centre No. 2 to present the recommended alternative solution Finalize preferred solution Develop and evaluate alternative design concepts Hold Public Information Centre No. 3 to present the recommended alternative design concept Finalize preferred design Begin 30 day public review period for the Environmental Study Report (Spring 2012) 18
Questions and Discussion 19
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