When traffic increases in the Tri-Cities, particularly on hot summer days with a slight breeze, so do harmful ozone levels.
When traffic increases in the Tri-Cities, particularly on hot summer days with a slight breeze, so do harmful ozone levels. Tri-City Herald file
When traffic increases in the Tri-Cities, particularly on hot summer days with a slight breeze, so do harmful ozone levels. Tri-City Herald file

Tri-Cities has a pollution problem. If we don’t fix it, the feds could do it for us

April 08, 2018 03:59 PM