Porter Ranch Families Return to Find an Oily Substance Covering Their Homes, Inside and Out

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Families in Porter Ranch were speaking out Tuesday about an oily substance that was being found all over their homes and yards. The Los Angeles County Department of Public Health has warned residents not to touch the substance because it can cause rashes. Steve Kuzj reports from Porter Ranch for the KTLA 5 News at 10 on Tuesday, March 1, 2016.