Portland State University

Field Data Collection Services

CES can provide a wide range of field data collection services in support of local governments, institutions, and businesses. Cost effective data can be collected to assist in program evaluation, to identify needs or opportunities related to public services, to inform policy, or to identify opportunities to improve resource conservation practices.

Field data collection services include: conducting waste characterization studies (also known as waste sorts – see below), curbside data collection including residential garbage and recycling weight or observation studies, survey design and implementation, observation/monitoring and evaluation of pilot projects, and other field based work.

Our services can be used:

  • in support of public education and outreach pilot projects providing the critical data necessary to evaluate project impacts
  • to evaluate public outreach and education pilot programs
  • to better understand public sector participation in ongoing services such as curbside recycling or garbage services
  • to identify waste prevention or additional recycling opportunities in commercial waste streams
  • to collect public opinion data for use in evaluating policy options, program service levels, and customer satisfaction

What is a Waste Sort?

Many businesses and institutions are unaware of what kind of waste their facilities generate. A waste audit provides a detailed look at the composition of a facility’s waste stream. The primary component of a waste audit is a waste sort. Waste sorts provide an opportunity to assess current disposal practices and implement practices that increase waste prevention, recycling and possibly cost savings. A full waste audit involves both a waste sort and final report.:

1.) Waste Sort:
Staff conduct the following activities as part of a waste sort:

  • a representative sample will be pulled from the business’s waste stream (unless prior separation of a sample had been arranged)
  • sample will be separated in approximately 14 categories of materials
  • weights and approximate volumes of each category will be recorded
  • length of sort will be approximately 2 hours, varying depending on the
  • composition of the waste and other site specific considerations.

2.) Final Report:
Following a sort, a waste evaluator will create a report that includes the following:

  • sort summary
  • findings highlights
  • graphical data (charts and pictures) highlighting waste composition
  • specific recommendations based on findings
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