Scenes of air pollution in downtown Fresno late Friday morning

California Air Resources Board this week approved a clean air plan to reduce air pollution in the San Joaquin Valley. Currently, air quality in the Valley is failing to meet four health-based standards set by the Environmental Protection Agency.
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California Air Resources Board this week approved a clean air plan to reduce air pollution in the San Joaquin Valley. Currently, air quality in the Valley is failing to meet four health-based standards set by the Environmental Protection Agency.