Contractors test soil samples for contaminants like lead or mercury and remove tainted soil. If a section still tests high, crews remove 3 to 6 more inches of soil and retest. The goals of soil testing are to leave a property safe for families, children and pets as well as protect groundwater, wildlife and air quality.

The Metropolitan Water District of Southern California replaced Adel Hagekhalil with Deven Upadhyay after an investigation into claims of harassment.

Why you should listen: The same factors that make Los Angeles an appealing place to live are also the reasons we need a fundamentally different approach to fire. Learn about why fire management in Southern California is different from other parts of the country, the most common causes of fires here and what we can do to prevent them.

Nearly a dozen congressional members in or near Los Angeles County are asking the federal government to launch a joint task force to monitor harmful pollutants that have resulted from the recent wildfires to track the potential impact on Southern California residents.