Air District Operations

The Air District is taking steps to ensure Bay Area air quality and public health are protected while the shelter-in-place orders are in effect. Permits for businesses adjusting operations to aid in the public health response will also be expedited. Read more... | en Español

Tools and Methodologies

The air quality analysis tools below are intended to assist lead agencies in analyzing air quality impacts from proposed land use projects and plans.

The Air District provides some analytical tools to assist practitioners in evaluating air quality and greenhouse gas impacts during the environmental review process pursuant to the California Environmental Quality Act, or CEQA.

The tools provided in the tables below do not represent an exhaustive list and should be used in conjunction with other resources.

The Air District’s stationary source, highway, and roadway screening analysis tools listed in the tables below are currently not recommended for evaluating sensitive land uses, such as schools, senior centers, daycares, and health centers. A site-specific analysis should be conducted for projects involving these sensitive land uses. Lead agencies should contact the Air District to obtain more recent data for a site-specific analysis and guidance for complying with air quality analysis.

Tools and Methodologies

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3/2/2020Form

Stationary Source Data Request - This form is required when users request stationary source data from BAAQMD for environmental review purposes.


Note: For school projects, this form is not applicable. Please submit a Public Records Request.

Stationary Source Data Request Form
3/2/2020
Type:
Form
Description and Resources:

Stationary Source Data Request - This form is required when users request stationary source data from BAAQMD for environmental review purposes.


Note: For school projects, this form is not applicable. Please submit a Public Records Request.

Documents:
Stationary Source Data Request Form
2/25/2020Guidance

BAAQMD CEQA Thresholds of Significance

BAAQMD CEQA Thresholds
2/25/2020
Type:
Guidance
Description and Resources:

BAAQMD CEQA Thresholds of Significance

Documents:
BAAQMD CEQA Thresholds
5/31/2019Guidance

School Siting Guidelines - For evaluating environmental impacts at local schools.


California Department of Education Guidance - Guide to School Site Analysis and Development


EPA - School Siting Guidelines

BAAQMD School Siting Guidelines
5/31/2019
Type:
Guidance
Description and Resources:

School Siting Guidelines - For evaluating environmental impacts at local schools.


California Department of Education Guidance - Guide to School Site Analysis and Development


EPA - School Siting Guidelines

Documents:
BAAQMD School Siting Guidelines
5/31/2019GuidanceCalifornia Air Resources Board Air Quality and Land Use Handbook - For evaluating whether proposed general or area plan includes adequate buffer distances between toxic air contaminant sources and sensitive receptors.N/A
5/31/2019
Type:
Guidance
Description and Resources:
California Air Resources Board Air Quality and Land Use Handbook - For evaluating whether proposed general or area plan includes adequate buffer distances between toxic air contaminant sources and sensitive receptors.
Documents:
N/A
1/31/2020Guidance

Health Risk Screening Analysis Flow Chart - Outlines step-by-step screening process for estimating risk and hazards impacts in projects.

Screening Approach Flow Chart
1/31/2020
Type:
Guidance
Description and Resources:

Health Risk Screening Analysis Flow Chart - Outlines step-by-step screening process for estimating risk and hazards impacts in projects.

Documents:
Screening Approach Flow Chart
3/2/2020Guidance

Recommended Methods for Screening and Modeling Local Risks and Hazards - Describes in detail  how to screen and model risk and hazards from stationary, highway, and roadway sources. Also discusses the assumptions and methodologies used in developing the stationary source, highway, and roadway screening tools. For use with HARP.

Risk Modeling Approach May 2012
3/2/2020
Type:
Guidance
Description and Resources:

Recommended Methods for Screening and Modeling Local Risks and Hazards - Describes in detail  how to screen and model risk and hazards from stationary, highway, and roadway sources. Also discusses the assumptions and methodologies used in developing the stationary source, highway, and roadway screening tools. For use with HARP.

Documents:
Risk Modeling Approach May 2012
3/6/2020Guidance

California Air Resources Board Emissions Estimation Methodology for Ocean-Going Vessels and Commercial Harbor Craft – Inventory for use to support regulatory analysis of statewide regulations from ocean-going vessels and commercial harbor craft.


Ocean-Going Vessels


Commercial Harbor Craft

N/A
3/6/2020
Type:
Guidance
Description and Resources:

California Air Resources Board Emissions Estimation Methodology for Ocean-Going Vessels and Commercial Harbor Craft – Inventory for use to support regulatory analysis of statewide regulations from ocean-going vessels and commercial harbor craft.


Ocean-Going Vessels


Commercial Harbor Craft

Documents:
N/A
5/20/2016Guidance

Planning Healthy Places

Planning Healthy Places
5/20/2016
Type:
Guidance
Description and Resources:

Planning Healthy Places

Documents:
Planning Healthy Places
1/19/2017Tool

CalEEMod - Statewide land-use emissions computer model designed to quantify potential criteria pollutant and GHG emissions associated with both construction and operations from a variety of land-use projects.

N/A
1/19/2017
Type:
Tool
Description and Resources:

CalEEMod - Statewide land-use emissions computer model designed to quantify potential criteria pollutant and GHG emissions associated with both construction and operations from a variety of land-use projects.

Documents:
N/A
3/6/2020Tool

HARP – The Hotspots Analysis and Reporting Program (HARP) is a software suite that addresses the programmatic requirements of the Air Toxics "Hot Spots" Program (Assembly Bill 2588). HARP incorporates the information presented in the 2015 Air Toxics Hotspots Program Guidance Manual for Preparation of Health Risk Assessments.

N/A
3/6/2020
Type:
Tool
Description and Resources:

HARP – The Hotspots Analysis and Reporting Program (HARP) is a software suite that addresses the programmatic requirements of the Air Toxics "Hot Spots" Program (Assembly Bill 2588). HARP incorporates the information presented in the 2015 Air Toxics Hotspots Program Guidance Manual for Preparation of Health Risk Assessments.

Documents:
N/A
3/6/2020Tool

Health Risk Calculator with Distance Multipliers - Estimates and refines screen-level cancer risk, a non-cancer health hazard index, and PM2.5 concentrations using emissions data from BAAQMD's permitting database. This tool should only be used for permitted facilities where screening-level risks have not already been calculated by BAAQMD or if BAAQMD Health Risk Screening Assessments have not been completed.

BAAQMD Health Risk Calculator Beta 4.0
3/6/2020
Type:
Tool
Description and Resources:

Health Risk Calculator with Distance Multipliers - Estimates and refines screen-level cancer risk, a non-cancer health hazard index, and PM2.5 concentrations using emissions data from BAAQMD's permitting database. This tool should only be used for permitted facilities where screening-level risks have not already been calculated by BAAQMD or if BAAQMD Health Risk Screening Assessments have not been completed.

Documents:
BAAQMD Health Risk Calculator Beta 4.0
6/13/2012Tool

Gasoline Dispensing Facility (GDF) Distance Multiplier Tool: This distance multiplier tool refines the screening values for cancer risk and chronic hazard index found in the District's Stationary Source Screening Analysis Tool for GDF's, to represent adjusted risk and hazard impacts that can be expected with farther distances from the source of emissions.


Note: This tool has been transferred to the Health Risk Calculator.

BAAQMD Health Risk Calculator Beta 4.0
6/13/2012
Type:
Tool
Description and Resources:

Gasoline Dispensing Facility (GDF) Distance Multiplier Tool: This distance multiplier tool refines the screening values for cancer risk and chronic hazard index found in the District's Stationary Source Screening Analysis Tool for GDF's, to represent adjusted risk and hazard impacts that can be expected with farther distances from the source of emissions.


Note: This tool has been transferred to the Health Risk Calculator.

Documents:
BAAQMD Health Risk Calculator Beta 4.0
6/13/2012Tool

Diesel Internal Combustion (IC) Engine Distance Multiplier Tool: This distance multiplier tool refines the screening values for cancer risk and PM2.5 concentrations found in the District's Stationary Source Screening Analysis Tool for permitted facilities which contain only diesel IC engines, to represent adjusted risk and hazard impacts that can be expected with farther distances from the source of emissions.


Note: This tool has been transferred to the Health Risk Calculator.

BAAQMD Health Risk Calculator Beta 4.0
6/13/2012
Type:
Tool
Description and Resources:

Diesel Internal Combustion (IC) Engine Distance Multiplier Tool: This distance multiplier tool refines the screening values for cancer risk and PM2.5 concentrations found in the District's Stationary Source Screening Analysis Tool for permitted facilities which contain only diesel IC engines, to represent adjusted risk and hazard impacts that can be expected with farther distances from the source of emissions.


Note: This tool has been transferred to the Health Risk Calculator.

Documents:
BAAQMD Health Risk Calculator Beta 4.0
4/16/2015Tool

Roadway Screening Analysis Calculator - county specific tables containing estimates of risk and hazard impacts from roadways in the Bay Area.


Note: This calculator is outdated and has been removed. Please contact BAAQMD for assistance. 

N/A
4/16/2015
Type:
Tool
Description and Resources:

Roadway Screening Analysis Calculator - county specific tables containing estimates of risk and hazard impacts from roadways in the Bay Area.


Note: This calculator is outdated and has been removed. Please contact BAAQMD for assistance. 

Documents:
N/A
4/29/2011Tool

Highway Screening Analysis Tool - Google Earth map tool to identify estimated risk and hazard impacts from highways throughout the Bay Area.  Google Earth must be installed to run files. Click on different segments of the highways to view estimated risk and hazard impacts that represent the average annual daily traffic (AADT) count, fleet mix and other modeling parameters specific to that segment of the highway.  The estimated risk and hazard impacts were modeled at two different heights, 6ft. and 20 ft.  The 6 ft. height estimates should be used when receptors are located on the ground floor of a building; and the 20 ft. height estimates should be used when receptors are located on the second floor of a building.


Note: This tool is outdated and has been removed. Please contact BAAQMD for assistance. 

N/A
4/29/2011
Type:
Tool
Description and Resources:

Highway Screening Analysis Tool - Google Earth map tool to identify estimated risk and hazard impacts from highways throughout the Bay Area.  Google Earth must be installed to run files. Click on different segments of the highways to view estimated risk and hazard impacts that represent the average annual daily traffic (AADT) count, fleet mix and other modeling parameters specific to that segment of the highway.  The estimated risk and hazard impacts were modeled at two different heights, 6ft. and 20 ft.  The 6 ft. height estimates should be used when receptors are located on the ground floor of a building; and the 20 ft. height estimates should be used when receptors are located on the second floor of a building.


Note: This tool is outdated and has been removed. Please contact BAAQMD for assistance. 

Documents:
N/A
3/6/2020Tool/Data

Permitted Sources Risk and Hazards Map – GIS map tool to identify estimated risk and hazard impacts from stationary sources.


Permitted Sources Risk and Hazards Map


Note: If project is within the West Oakland Community, more detailed risk data is available through the West Oakland Community Action Plan webpage.

Methodology for Permitted Stationary Sources Risk and Hazards Map
3/6/2020
Type:
Tool/Data
Description and Resources:

Permitted Sources Risk and Hazards Map – GIS map tool to identify estimated risk and hazard impacts from stationary sources.


Permitted Sources Risk and Hazards Map


Note: If project is within the West Oakland Community, more detailed risk data is available through the West Oakland Community Action Plan webpage.

Documents:
3/6/2020Data

Air Monitoring Data – Access to current air quality and meteorological information based on measurements taken at stations in the Air District’s air monitoring network. Some of the data on these pages is raw or unchecked data that may contain some errors.


Note: For the availability of AERMOD-ready data, please contact James Cordova at jcordova@baaqmd.gov.

N/A
3/6/2020
Type:
Data
Description and Resources:

Air Monitoring Data – Access to current air quality and meteorological information based on measurements taken at stations in the Air District’s air monitoring network. Some of the data on these pages is raw or unchecked data that may contain some errors.


Note: For the availability of AERMOD-ready data, please contact James Cordova at jcordova@baaqmd.gov.

Documents:
N/A
3/6/2020Data

Caltrans Traffic Volumes: Annual Average Daily Traffic (AADT) – Necessary for presenting statewide picture of traffic flow, evaluating traffic trends, computing accident rates, planning and designing highways, and other purposes.

N/A
3/6/2020
Type:
Data
Description and Resources:

Caltrans Traffic Volumes: Annual Average Daily Traffic (AADT) – Necessary for presenting statewide picture of traffic flow, evaluating traffic trends, computing accident rates, planning and designing highways, and other purposes.

Documents:
N/A

Contact Us

Areana Flores
Environmental Planner, Planning and Climate Protection

415.749.4616

Contact Us

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