California's Diesel Risk Reduction Plan

This page last reviewed June 17, 2008

Air Resources Board Meeting

Proposed Diesel Risk Reduction Plan

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Table of Contents

Proposed Diesel Risk Reduction Plan

Multi-Divisional Effort


Summary of Risk Reduction Plan

Summary of Risk Reduction Plan (cont.)

Identification of Diesel PM

Advisory Committee and Subcommittees

There are 1.25 Million Diesel Engines in CA

93% of Diesel PM is Emitted by Mobile Sources

Diesel PM Emissions Trend Under Current Program

Diese PM Responsible for 70% of Year 2000 Statewide Risk from Air Toxics Emissions

Estimated Near-Source Potential Risks for Diesel-Related Activities

Reductions Needed

Goals of Diesel PM Risk Reduction Plan

Options to Further Reduce Diesel PM Emissions

Catalyst-Based Diesel PM Traps

Diesel PM Traps Are Effective

Diesel PM Trap Applications - Fork Lift

Diesel PM Trap Applications - School Bus

Diesel PM Trap Applicatoins - Stationary Engine

Trap Requirements

Other Control Options

Staff Proposes Development of 14 New Measures Over the Next 2-3 Years

Proposed Risk Reduction Plan

Four On-Road Mobile Source Measures Proposed

Four Off-Road Mobile Source Measures Proposed

Five Measures Addressing Stationary and Portable Engines

Fuel Measure

Guidance Document Addressing Alternative "Diesel" Fuel and Fuel Additives (2001)

Federal Action Is Critical

Benefits of the Plan

The Proposed Plan

Proposed Plan Reduces Diesel PM Emissions and Risk by 75% in 2010 and by 85% in 2020

Retrofit of Existing Engines Is Necessary to Achieve Plan's Goals

Cost of Plan



Summary (cont.)


Randy Pasek

Air Toxics Program
California's Diesel Risk Reduction Plan