Although most populated areas of San Luis Obispo County enjoyed
very good air quality this year, ozone levels exceeding both federal
and state standards were measured on numerous days in the Carrizo
Plains due to transported pollution from the San Joaquin Valley.
Exceedence days in Atascadero and in Paso Robles were also
concurrently recorded for the state 8-hour standard.
Exceedences of the state 24 hour PM10 standard were recorded at
Nipomo Mesa 2, Nipomo Regional Park, San Luis Obispo, Morro Bay and
Paso Robles. There was no measured exceedence of other air quality
standards in 2006.
In San Luis Obispo County, ozone and PM10 are the pollutants of
main concern, since exceedences of state health-based standards for
those are experienced here in most years. Our county is designated
as a non-attainment area for the state PM10 standard.
Mission
