Princeton Wastewater Servicing Study Public Information Centre No 2 Public Information Centre No. 2 April 11, 2012 Slide 1
Water System Update � System will be commissioned in May and ready for connections � All properties will receive notification at that time p p � CSAP program has been reviewed by Council and the maximum cost to residents for water has been the maximum cost to residents for water has been capped at $9,500. � Princeton residents will pay will this amount and � Princeton residents will pay will this amount and not the actual cost of $12,600 (after CSAP grant).
Presentation Agenda � Finalized Problem/Opportunity Statement � Alternatives � Evaluation of Alternatives and Evaluation Criteria � Evaluation of Alternatives and Evaluation Criteria � Evaluation Results � Public and Agency Consultation P bli d A C lt ti � Study Schedule and Next Steps Slide 2
Purpose of PIC � To present review and discuss results of � To present, review and discuss results of preliminary evaluation of alternatives � To gain input from the Community on the information presented Slide 3
Study Background � During the Princeton Water Servicing Study, the County received a petition signed by 130 Princeton residents, p g y , requesting that a wastewater servicing study be completed for Princeton � Upon receiving the petition: � Oxford County Public Works and Public Health and Emergency Services Departments reviewed all un serviced and partially Services Departments reviewed all un-serviced and partially serviced villages � A priority list was developed for wastewater servicing studies 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 Slide 4
Study Objective Princeton Wastewater Servicing Study Objective Overall objective of the Princeton Wastewater Servicing Study is to develop a wastewater servicing plan for the Study is to develop a wastewater servicing plan for the Community of Princeton that is environmentally responsible, socially acceptable and economically responsible, socially acceptable and economically sustainable Slide 5
Class Environmental Assessment Process Phase 1 Existing Data Collection Review and Problem or Opportunity Problem or Opportunity Analysis Analysis Princeton Wastewater Phase 2 Development and Evaluation of Alternative Alternative Solutions Solutions Servicing Study Servicing Study involves We Are Here Phase 3 completion of Alternative Design Concepts for Development and Evaluation of Alternative Phases 1 to 4 of Preferred Solution Preferred Solution Design Concepts for Implementation of the Design Concepts for Implementation of the the Municipal Preferred Alternative Class EA process Phase 4 Environmental Study Report Completion of an Environmental Study Report (ESR) (ESR) (ESR) and placement on public record for 30 day (ESR) and placement on public record for 30 ‐ day review period Phase 5 Design and Construction of the Preferred Implementation Solution Slide 6
Existing Conditions � Wastewater treatment is currently provided by on- site wastewater septic tank systems � Analysis of existing septic systems was completed y g p y p to: � Estimate the age and status of existing systems based Estimate the age and status of existing systems based on available records � Identify what type of replacement wastewater system y yp p y could be installed on each property based on the requirements of the current Ontario Building Code Slide 7
Existing System Age Existing Septic Systems Number of systems that are now between 0 37 (18%) and 25 years old (Constructed between 1987 and the present) Number of systems that are now between 25 16 (8%) and 35 years old (Constructed between 1977 and 1987) Number of systems that are now more than 35 y 154 (74%) ( ) years old (Constructed before 1977) Total number of systems 207 (100%) � Life span of a typical septic system is 20 to 25 years � Some systems can function effectively for 35 years y y y Slide 8
Ontario Building Code � The Ontario Building Code (OBC) specifies requirements for on-site wastewater treatment systems Key for on-site wastewater treatment systems. Key requirements are: • Allows for the installation of conventional and advanced treatment Class 4 sewage system where technology selection treatment Class 4 sewage system where technology selection and tile bed size is based on local soil and groundwater conditions • Specifies a number of required clearance distances between the • Specifies a number of required clearance distances between the tile bed and a building, and the tile bed and the property line • A replacement Class 4 system can be installed where the required clearance distances are not met under the Compliance required clearance distances are not met under the Compliance Alternatives section of the Ontario Building Code as long as the capacity of the replacement system is not greater than the existing system g y Slide 9
Current Ontario Building Code Requirements Requirements Existing Septic Systems Estimated number of properties where the existing system is less E ti t d b f ti h th i ti t i l 52 (25%) 52 (25%) than 35 years old (constructed in 1977 or later) Estimated number of properties with existing systems more than 35 90 (43%) years old that can accommodate a conventional septic system Estimated number of properties with existing systems more than 35 52 (25%) years old that can accommodate an advanced treatment system Estimated number of properties with existing systems more than 35 12 (6%) years old that cannot accommodate a conventional or advanced treatment system and will require a holding tank Total number of systems 207 (100%) Slide 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 p y p y current Ontario Building Code � It is estimated that 43% of existing septic systems It is estimated that 43% of existing septic systems are able to accommodate a new conventional septic system septic system � Remaining properties will require an advanced treatment system or a holding tank treatment system or a holding tank Slide 11
Future Growth in Princeton � Moderate growth within the existing community boundary is anticipated � Existing population (residential and equivalent g p p ( q non-residential) is estimated to be 833 persons including 629 residents plus an equivalent non- g p q residential population of 204 persons � Future population (residential and equivalent non- Future population (residential and equivalent non residential) is estimated to be 1,518 persons Slide 12
Future Growth in Princeton � Projected Total Population and Flow Projections for Community of Princeton future 1600 1600 500 500 wastewater 450 1400 ow (m 3 /d) 400 1200 flow for the pulation 350 1000 300 800 250 Community of Community of Projected Flo Projected Pop 200 600 150 400 Princeton is 100 200 50 0 0 455 m 3 /d 455 m /d 2011 Future Year Year P Residential and Non-Residential Population Flow Projection Slide 13
Problem/ Opportunity Statement � Develop a wastewater servicing plan for the existing Community of Princeton that is environmentally responsible, socially acceptable and economically sustainable � It is estimated that 154 of 207 existing septic g p systems (74% of all existing systems) are now more than 10 years older than their design life and y g will require replacement in the short term due to their age g Slide 14
Alternative Solutions Alternative Solution Description Alternative 1 – “Do Nothing” No action to address existing systems by either property owners or the County t th C t Alternative 2 – Upgrade Existing Private Upgrade existing systems to Class 4 or 5 systems On-Site Wastewater Treatment Systems to meet current Ontario Building Code requirements Individual property owners would requirements. Individual property owners would upgrade their systems when needed over time Alternative 3 – New communal wastewater Construction of lower cost septic tank effluent type collection system and wastewater collection system and wastewater wastewater collection system and new treatment wastewater collection system and new treatment treatment system to service Princeton facility in Princeton to collect and treat wastewater Alternative 4 – New wastewater collection Construction of conventional sewers, a new system and diversion of wastewater for y pumping station, a new forcemain and upgrades p p g pg treatment to the Woodstock Wastewater at the Woodstock WWTP to convey and treat Treatment Plant (WWTP) wastewater from Princeton at the Woodstock WWTP Slide 15
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