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Introduction
Accurate base-year waste generation tonnage is critical to diversion goal measurement,
because it establishes a starting point. Overlooked base-year generation results in lower
diversion rate estimates in subsequent years.
Initially, a jurisdiction’s base-year waste generation tonnage is described in its
solid waste generation study, a component of its Source Reduction and Recycling Element
(SRRE). At a public hearing,
the Board reviews and approves each jurisdiction's base-year generation, and makes
corrections as needed. Jurisdictions may update their base-year generation by
performing a new solid waste
generation study.
Jurisdictions may correct their base-year generation if the base year is no more
than three calendar years old.
- "Waste generation" means waste disposed plus waste diverted from disposal.
- "All sources" means any type of generator: single- or multifamily residential,
commercial, industrial, military, etc. regardless of who delivers the waste to the
disposal facility (includes self haul).
Using Base-Year Generation to Estimate Diversion
- Jurisdictions must use the
Board-approved base-year generation tonnage to estimate their report-year diversion rate.
- Base-year generation tonnage that is disposed must include all sources of solid waste originating within
a jurisdiction’s boundaries and delivered to
Board-permitted landfills
and transformation
facilities.
- Base-year generation must include all solid waste exported from California. Exported
waste counts as disposal unless a jurisdiction shows it was diverted. Waste imported to
California (including waste from Indian
country) must not be included in base-year generation.
- Because diversion and disposal are included in base-year generation tonnage,
jurisdictions get "credit" for base-year diversion programs, even though only
disposal is measured in subsequent years.
- Prior to its use in the adjustment
method, the base-year generation tonnage must be separated into two amounts:
residential and nonresidential. Population and economic change (as measured by
employment and
inflation-adjusted taxable
sales) affect these two amounts differently.
- The Board has tools to help jurisdictions address inaccurate or outdated
base-year generation amounts. These tools are on the Board's Local
Government Central Web site at www.ciwmb.ca.gov/LGCentral/Forms/default.htm
- A jurisdiction may discuss base-year concerns in its annual report
to the Board. If
the nature of the production of
solid waste changes, or if a jurisdiction finds errors in its original base year, it may
want to propose a new base year and base-year generation to the Board by quantifying its
diversion and disposal in the new base year.
- The next step in the diversion measurement process is to use the
Board-approved
adjustment method to estimate report-year generation.
Legislation, Statutes, and Regulations
Legislation:
(1)
Chapter 1095, Statutes of 1989 (Sher, AB 939)
(2)
Chapter 145, Statutes of 1990 (Sher, AB 1820)
(3)
Chapter 1292, Statutes of 1992 (Sher, AB 2494)
(4) Chapter 1169, Statutes of 1993 (Sher, AB 440)
(5) Chapter 1227, Statutes of 1994 (Sher, AB688)
(6) Chapter 740, Statutes of 2000 (Sher, SB2202)
Statute: Public Resources Code (PRC) Section
PRC
41780,
PRC 41781 ,
Waste Diversion Planning Requirements
Regulations:
Title 14, California Code of Regulations (14 CCR): Chapter 9, Article 6.1, Solid
Waste Generation Studies
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