CONCORD -- The Mt. Diablo school board Wednesday voted unanimously to approve stadium lighting and a public address system for Ygnacio Valley High School.

The board, after meeting with the community, revised the conditions of use for the field to lessen the possible impacts to neighbors. Some of those conditions include adding larger vegetation to better buffer the field from surrounding homes, ending nighttime sports practices no later than 8:30 p.m., and moving back the start time for community assemblies to 9 a.m. rather than 8 a.m.