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The key steps for conducting a diversion study and submitting a
request to the CIWMB for a new base year are listed below and are also
discussed on the following pages.
- Waste stream has significantly changed; need to
identify programs.
- Existing programs are not effectively impacting the
waste stream.
- Diversion rate does not reflect program implementation
efforts.
- Determine the goal of the diversion study.
- Identify amount of time needed to conduct the study.
- Identify available resources to conduct the study.
- Assess the characteristics of the community, e.g.
residential vs. non-residential.
- Identify where to capture diversion data, (e.g.
haulers, recyclers, non-residential sector generators, etc.).
- Determine overall data collection approach.
- Reference
the CIWMB’s Profiles database.
- Identify
the CIWMB Waste Reduction Awards Program (WRAP)
recipients in your jurisdiction.
- Consider
conducting a regional diversion study to include other neighboring
jurisdictions.
- Establish whether surveying generators will require the
use of extrapolation method(s).
- Determine appropriate sampling method; e.g., random vs.
stratified.
- Develop collection data tools; e.g., phone, mail,
on-site survey forms.
- Address restricted wastes.
- Prepare quality control procedures for the study; e.g.,
test survey method and forms, and train staff.
- Contact the service providers—e.g., haulers,
recyclers, processors; then collect the available data.
- Collect data from generators: verify the residential
and non-residential sector generators and collect diversion survey data.
- Evaluate, analyze, and perform quality control checks
of data collected.
- Make comparisons of data sources to avoid double
counting.
- Reference and use appropriate conversion factors:
Appendix I includes guidance regarding the use of appropriate conversion
factors to determine weights.
- Compile and calculate diversion and disposal data.
- Compile
the data for service providers and generator sectors by diversion activities.
- Gather Disposal Reporting System data and report any suspect issues to the CIWMB
local assistance staff. compile disposal data by
generator sectors (residential and non-residential). If an alternative method was used, please complete the CIWMB
Reporting Year Modification Certification form.
- Calculate
total generation amount and diversion rate.
- When using the CIWMB Base-Year Modification Request
Certification sheet, data should be identified by the generator, type of
diversion activity and material type (e.g. city government paper source
reduction, bakery food reuse, retail cardboard recycling, supermarket food
composting).
- Describe diversion
calculation methodology used.
- Provide a detailed summary of
the nonresidential sector surveyed.
- Provide new base-year
generation study calculation details.
- Explain how restricted wastes
were addressed.
- Provide list of conversion
factors used, and identify source documents.
- Please submit all necessary information to the Board’s
local assistance staff. Your local assistance staff representative will work with you to prepare for your
appearance before the Board.
Questions? Call (916) 341-6199 for your
local assistance staff representative.
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