Yolo County top health official declared Monday a local health emergency to assess if hazardous material spread across soil, water and crops bordering an Esparto warehouse filled with fireworks that exploded in July and killed seven people.

A Yolo County judge removed himself from presiding over a civil lawsuit related to the deadly series of explosions last month at a fireworks facility in Esparto.

Coroner states Esparto warehouse explosion victims died from blast and thermal injuries; deaths ruled accidental.