… Old underground storage tanks are scattered across communities of all levels of vulnerability. Often relics of old gas stations, they frequently leak gasoline into the surrounding soil and groundwater. As cleanups go, they are relatively simple, and the cleanup protocol is consistent across sites. … The state Water Resources Control Board, which oversees the cleanups of underground storage tanks, is aware that cleanups take longer in more vulnerable communities. Annalisa Kihara, the agency’s assistant deputy director in the Division of Water Quality, said the agency is revising its process to prioritize communities that are most burdened with pollution, and that it has an initiative for expediting stalled cases.