Diversion Study Guide

Preparing and Submitting a New Base-Year Request

A jurisdiction may submit a request to the CIWMB to replace the original base year with a more current base year at any time, or it may include the request in the jurisdiction’s annual report to the Board.

When using the CIWMB Base-Year Modification Request Certification sheet to submit a request for a new base year derived from the diversion study conducted, the following documentation is required:

• Identify data by type of generator, by material type, and diversion activity; e.g., paper (double-sided copying), food reuse, cardboard recycling.
• Describe diversion calculation methodology used.
• Provide a detailed summary (e.g., assumptions, methodology, sampling techniques, etc.) of the sampling methodology of the residential and non-residential sector surveyed.
• Provide new base-year generation study calculation details.
• For each restricted waste type, provide an explanation of how restricted waste criteria were addressed.
• Provide list of conversion factors used, discussion of applicability, and sources.
• Provide any documentation that will support the data collected.

The Base Year Modification Request certification sheet (Appendix L) is available on the Board’s Web site.

The CIWMB’s local assistance staff is available to assist you with answering any questions you have or providing input on your new base-year study.  If you need any technical assistance, please contact local assistance staff at (916) 341-6199

Table of contents

Last updated: December 28, 2007