FILE PHOTO: Tyler Lake/IPB News

The Sierra Club says it’s suing BP for air quality violations at its Whiting Refinery that have harmed northwest Indiana residents’ health. The Hoosier chapter of the organization filed suit against the company in a federal district court on Friday. 

It says for at least four years, state and federal environmental agencies have allowed BP’s Whiting Refinery to emit too much particulate matter — which has been linked to health problems like asthma and heart attacks.