After the Napa Fires, Toxic Ash Threatens Soil, Streams, and the San Francisco Bay

After the Napa Fires, Toxic Ash Threatens Soil, Streams, and the San Francisco Bay
After the Napa Fires, Toxic Ash Threatens Soil, Streams, and the San Francisco Bay
After the Napa Fires, Toxic Ash Threatens Soil, Streams, and the San Francisco Bay
It turns into sediment in lakes and streams, carries heavy metals and toxins—and if it comes from buildings, no one knows what's in it.

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