Los Angeles may have the distinction of offering celebrity home tours. But in the Inland area, gray air and bubbling ooze are just a bus ride away. Tour participants can view a treatment facility for the Stringfellow acid pits in Glen Avon, breathe the particles in the air near a distribution facility in Mira Loma and see the proposed site for warehouse space next to a residential community where young children play. About 45 county officials, labor leaders and community members took part in the Riverside County tour offered by the Center for Community Action and Environmental Justice in Jurupa....