Greenhouse gas rules prompt California dairies to build methane digesters

The Van Warmerdam dairy in Galt is one of just 15 in California with a methane digester to turn manure into clean power. Hundreds more will need digesters to comply with a new state climate change law.
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The Van Warmerdam dairy in Galt is one of just 15 in California with a methane digester to turn manure into clean power. Hundreds more will need digesters to comply with a new state climate change law.

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