Imperial County is seeking to declare a public health emergency at the Salton Sea, The Desert Sun has learned, aiming to force Gov. Gavin Newsom and federal officials to free up emergency funds and take immediate action to tamp down dangerous dust.

County supervisors will vote Tuesday on an urgent action item to proclaim a local air pollution emergency due to airpollution at the state’s largest lake, which is rapidly shrinking and exposing shoreline that is potentially loaded with contaminants from decades of agricultural runoff and military testing.