Stewardship Ontario Residential Waste Audit Program by housework


									      Stewardship Ontario
Residential Waste Audit Program
           John Dixie
• Background / Why does Stewardship Ontario
  conduct audits?
• Program design & community selection process
• Sample area selection
• Sampling protocols for single & multifamily audits
• Resource requirements
• Findings and trends
Background / Why does Stewardship
     Ontario conduct audits?
• Blue Box Program Plan directs Stewardship Ontario
  to complete residential waste audits
• Funded through Effectiveness & Efficiency Fund
• Stewardship Ontario uses waste audit data to:
   – assess waste generation for setting fees (cross-
     check with stewards’ reports)
   – assess opportunities and priorities to improve
               Background cont.
Why do the partner municipalities participate?
  • Generation and recovery estimates useful for
    planning purposes
  • Participation and set out data valuable for diversion
    policy decisions (e.g. bag limits, user pay)
  • Monitoring impacts of pilot programs and system
  • Data useful for developing targeted education
  • Meeting requirements for external funding
  Program Design and Community
        Selection Process
SO opted for a curbside waste audit program
  • Can monitor all streams (Blue Box, organics,
    yard waste, bulky items, garbage)
  • Provides participation and set out information
  • Can tie waste sort results to a specific number of
    households which yields kg/household/wk
    generation and recovery figures
Criteria for selecting partner municipalities
    • Geographic location, size, rural vs urban,
      seasonal pop., level of interest
76 single-family and 44 multi-family audits in
  19 municipalities, Jan 2005 to Dec 2007
      Sample Area Selection - SF

• Criteria for selecting single-family households:
   – 100 randomly selected homes (10 in a row in 10
     sample areas across municipality)
   – 10 areas should reflect overall housing mix,
     waste generation behaviour and socio-economic
• 4 seasonal audits, same 100 homes
• This level of sampling yields statistically significant
  results for most materials
• Avoid homes on busy streets, at beginning of
  route, with afternoon pick up
       Sample Area Selection - MF

Criteria for selecting multi-family buildings
   • 10 randomly selected buildings across the
     municipality that reflect overall MF housing mix
     (e.g. condo/rental, high-rise/low-rise, waste
     generation behaviour, etc)
   • 4 seasonal audits, same 10 buildings
   • Avoid complexes with shared bins and buildings
     with commercial establishments
            Sampling Protocols

   • Collect and sort 100% of waste generated over a
     two week period.
   • Collect and sort 100% of waste generated over a
     one week period
   • For large buildings, collect 100%, weigh load, and
     sort 4 x ~100 kg subsamples
   • Average the composition figures from each
     subsample and apply to entire load
Waste Sorting
            Material Categories
• Stewardship Ontario uses 98 detailed categories
  focusing on Blue Box printed paper and packaging
• Also measure food waste, HHW, electronics, scrap
  metal, textiles, sanitary products, etc
• Municipalities can reduce costs by scaling down the
  categories significantly depending on needs
         Resource Requirements

Municipal resources required:
  • Staff time to select sample areas & households
  • Provide adequate space for sorting
  • Inform regular collection crews and coordinate
     multi-family waste pickup for large buildings
  • Field questions from public
  • Prepare explanatory letter for property managers
     / residents who ask questions
            Finding and Trends (1)
• >5,000 Blue Box, garbage, and organics samples
  analyzed from 1,900 single-family households and
  110 multi-family buildings
• One of the largest residential waste audit databases
  in the world
• Curbside generation estimates for printed paper and
  packaging (kg/household/year):
      •   Single-family large urban:           ~340
      •   Single-family small urban & rural:   ~315
      •   Multi-family large urban:            ~265
      •   Multi-family small urban & rural:    ~210
        Finding and Trends (2)
• Statistical analysis by University of New
  Brunswick found some significant seasonal
  differences for specific material categories, no
  difference between low rise and high rise
• Continue to analyze data
• Waste audit guides and results available on
  Stewardship Ontario’s web site:
   Thank You

 For more information:
       John Dixie

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