Motor Vehicle Emissions Inventory and Budget Documentation

This page last reviewed March 19, 2013

Proposed 2004 Revisions to the California State Implementation Plan
for Carbon Monoxide
Updated Maintenance Plan for Ten Federal Planning Areas

The proposed 2004 Revision to the California State Implementation Plan for Carbon Monoxide (CO Maintenance Plan) covers ten federal planning areas in California (see list below) as an update to the 1996 CO Maintenance Plan approved by U.S. EPA on June 1, 1998.  This page documents the updates to the on-road motor vehicle emissions inventory, and the development of the 2003 and 2018 transportation conformity budgets contained in the proposed CO Maintenance Plan.

Ten Federal Planning Areas for Carbon Monoxide

The proposed budgets listed below will be considered by ARB at the regularly scheduled Board meeting on July 22-23, 2004. Once adopted, ARB will submit the CO Maintenance Plan, including the conformity budgets, to U.S. EPA for approval. Upon the effective date of a budget adequacy finding by U.S. EPA, the proposed 2004 CO Maintenance Plan budgets must be used in all subsequent transportation conformity determinations.

These budgets were developed in close coordination with the regional transportation planning agencies responsible for each area. The budgets include the latest data available at the time of budget development. The following links provide more detailed information regarding the methodologies, model runs, and results used in the development of these budgets. Information for all ten CO areas are included.

Inventories and Conformity Budgets Documentation