A Superfund site in Davis has become the first federal groundwater cleanup project powered by solar energy, the U.S. Environmental Protection Agency said.

EPA officials on Wednesday unveiled the Frontier Fertilizer Superfund site's new solar photovoltaic system, which will help power the treatment of contaminated groundwater beneath the east Davis neighborhood.

"Our goal should be to clean up the environment in the greenest way possible – and this new treatment plant sets the benchmark for future actions," said Jared Blumenthal, EPA's regional administrator for the Pacific Southwest.

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