Facility-Based Mobile Source Measures

Focused on implementation of the five Facility-Based Mobile Source Measures (FBMSMs) adopted in the 2016 AQMP.
            FBMSM Warehouse iconFBMSM Airports iconFBMSM Development Projects iconFBMSM Ports iconFBMSM Rail icon

Upcoming Meetings:

Meeting Archives here.

Goal & Objectives of Working Groups

The main goal of this effort is to begin implementation of the five Facility-Based Mobile Source Measures (FBMSMs) adopted in the 2016 AQMP. This process will first seek a voluntary, collaborative approach to reducing emissions from facilities and ensuring that these reductions are counted towards the region’s emissions budget.  Potential indirect source regulatory concepts will be explored if voluntary emission reductions or actions by CARB or EPA are not identified to a significant extent by March 2018.

By convening industry, local government, and community stakeholders, these working groups will identify actions (voluntary and regulatory) that could result in additional emission reductions. Objectives include:

  • Conducting an in-depth review of the current technological and regulatory landscape affecting FBMSM emission sources

  • Developing a comprehensive Framework that identifies opportunities for achieving additional emission reductions and how to obtain credit within the State Implementation Plan

  • Undertaking a public process that includes working group meetings, individual stakeholder meetings, and web resources to share information and solicit feedback on the Framework as it evolves

  • Reporting to the SCAQMD Governing Board on progress and providing recommendations on the role of voluntary measures and regulations moving forward

Preliminary 2023 Airports Emissions Inventory
Preliminary Airports Emissions Calculations
Preliminary 2023 Ports Emissions Inventory
Preliminary Ports Emissions Calculations
Preliminary 2023 Rail Yards Emissions Inventory
Preliminary Rail Yards Emissions Calculations
Preliminary 2023 Warehouse Emissions Inventory
Preliminary Warehouse Emission Calculations
Preliminary 2023 New/Redev Emissions Inventory
Preliminary New/Redev Emissions Calculations


What are Facility-Based Mobile Source Measures (FBMSMs)?

The recently adopted 2016 Air Quality Management Plan (AQMP) (linked) identified many control strategies to meet federal ambient air quality standards for ozone and particulate matter, mainly through control measures to reduce nitrogen oxides (NOx), a key precursor pollutant.  Control measures were identified for both stationary sources (factories, refineries, etc.) and mobile sources (cars, trucks, ships, etc.).  The Facility Based Mobile Source Measures identified in the 2016 AQMP will seek to reduce emissions from the indirect mobile sources associated with facilities, for example trucks visiting ports or warehouses, construction equipment used in development, etc.

Why are FBMSMs necessary?

Approximately 80% of the NOx emitted in the air basin is from mobile sources. EPA and CARB have primary authority to regulate emissions from mobile sources, and have adopted many regulations that will continue to reduce emissions in coming years.  However, after considering all existing rules and regulations, an additional 45% reduction of NOx is needed by 2023, and a 55% reduction is needed by 2031.  FBMSMs are intended to help achieve these needed emission reductions.

How can I find out more about financial incentives that SCAQMD is pursuing?

SCAQMD is undertaking an effort to secure incentive funding for the implementation of the 2016 AQMP that is separate from FBMSM development. More information regarding this effort is available here.  Information regarding existing incentive programs can be found here.

How can I find out more about lower emission technologies?

SCAQMD is in the process of developing a website cataloging available zero and near-zero emission technologies. More information regarding this effort will be posted here when it becomes available. 

How can I provide feedback on the Facility Based Mobile Source Measures?        

Send us an email at and a staff member will get back to you.

How can I be added to the Facility Based Mobile Source Measures contact list?                          

Subscribe here

Newsletter Sign Up
Periodic newsletter updates via Email on a variety of air quality-related topics

South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765



© 2018 South Coast Air Quality Management District