Air Quality Reports

Ozone Transport Study

The California Clean Air Act of 1988 requires the California Air Resources Board (CARB) to assess which regions in the state contribute air pollutants to downwind areas and cause those downwind areas to exceed state air quality standards.

The District contracted with Sonoma Technology, Inc. (STI) to undertake the Shasta County Ozone and Ozone Precursor Transport Quantification Study. The study was completed in March 1997. It was designed to gather the data necessary to quantify pollutant transport from upwind areas, relative contributions of local emissions, and of local Interstate Highway 5 vehicle emissions. The study is available for review at the District office.

Ambient Air Quality Data

From May 1 through October 31, Redding's Record Searchlight newspaper publishes the daily Air Quality Index (AQI) in the Weather Section. Other ambient air quality questions can be answered through the District office with archived and real time data and trends by calling (530) 225-5674.

Air Quality Index Chart

California Environmental Quality Act (CEQA)

CEQA Environmental Review Guidelines

CEQA Protocol for Review - Land Use Permitting Activities

Emission Reduction Credit Bank

Emission Reduction Credit Bank - updated 04/15/2019

Other Documents

Monitoring Information for the Annual Network Plan