Welcome to the mapping tool for the Sacramento Metro Air District Mobile Sources Air Toxics Protocol.

This tool is designed to be used with the Guidance and Methodology documents.

This tool gives a conservative estimate of cancer risk and PM2.5 concentrations for points extending two kilometers out from roadways where at least 100,000 vehicles travel daily on average, and rail lines, within Sacramento County. These areas are shaded grey.

Instructions: Zoom in to the gray highlighted area where you want to see the cancer risk and PM2.5 concentrations. Then, click on a blue dot to show the results.

The results do not reflect existing features on or next to the location you choose that may reduce risk such as barriers, tree plantings, or enhanced indoor filtration.

For more detailed instructions and supporting information, see the Guidance and Methodology documents.