Jae C. Hong

Associated Press

A a geothermal plant is seen from the Leilani Estates subdivision near Pahoa, Hawaii, Tuesday, May 22, 2018. Authorities were racing Tuesday to close off production wells at the plant threatened by a lava flow from Kilauea volcano on Hawaii's Big Island.

Wells Plugged as Lava Nears

Residents have been concerned about hazards if the lava flowed over the plant's facilities, or if heat generated would interact with various chemicals used on-site.