Stewardship-ON-Res-waste-audit

John Dixie

Informations

• Publié par: Orku
• Nombre de lectures: 22
• Langue: English

Extrait

Stewardship Ontario Residential Waste Audit Program

John Dixie

StewardEdge

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Agenda

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?

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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 recovery

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 changes

• Data useful for developing targeted education   campaigns

• 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

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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 characteristics

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

Single-family • Collect and sort 100% of waste generated over a two week period. Multi-family • 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

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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