On today’s episode of The Confluence:Last week, Mayor Ed Gainey announced the first round of nonprofit organizations whose property taxes are being challenged for not being “purely public charities.” We speak with the mayor about the announcement. We also ask about the latest on the search for the city’s next police chief, and what has been learned from a study on police staffing. The Confluence, where the news comes together, is 90.5 WESA’s daily news program. Tune in Monday to Friday at 9 a.m. to hear newsmakers and innovators take an in-depth look at stories important to the Pittsburgh region. Find more episodes of The Confluence here for wherever you get your podcasts.