Ongoing Work: How will you prevent the contamination from moving off site when it rains?

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The site has a pre-existing drainage and stormwater collection system. The system collects any water that falls on the Moss Landing 300 building and the surrounding area. Additionally, Vistra built a paved surface for the battery handling area, which drains to a lined water collection area. All collected water will be sampled and managed according to the sampling results.

EPA recognizes that batteries are prone to re-ignition in wet conditions. All batteries are protected from the rain under tents while they are being processed. Battery processing includes staging, de-energizing, or being packaged for transport.

There are controls in place to prevent water from affecting intact battery modules in the west side of the fire-impacted building (Moss Landing 300) which still has intact battery modules.

The batteries on the damaged east side of the building were generally fully consumed in the fire and therefore less prone to reignition events.

Weather conditions are continuously assessed so that operations can be temporarily stopped if needed for safety.

Related Questions

• Ongoing Work: What are the contaminants of concern?
• Ongoing Work: Can the building be covered or tented?
• Ongoing Work: How is the air monitoring and air sampling data being used to protect the community and the environment?
• Ongoing Work: What will EPA and Vistra do if there are elevated readings detected by the air monitors?
• Ongoing Work: How will you control dust and particles during operations?