The union representing newsroom workers at the Contra Costa Times newspapers and Alameda Newspaper Group will hold a live Web chat moderated by unit leaders from noon to 1 p.m. on Wednesday, Aug. 13. That’s the first anniversary of the merger of the two newsrooms by MediaNews Group. In her invitation, Guild unit co-chair Sara Steffens writes, “Got questions about what you see — and don’t see — in your local paper? Wonder what the plans are for the future? Worried about whether we can sustain quality journalism amid the historic downturns of the newspaper industry? We want to hear from you — please join the conversation.” For more information, go to www.onebigbang.org.