State proposes cooperation on injection well exemptions

State oil regulators are telling neighboring oil field operators to work together if they want permission to inject steam, water or waste into aquifers not already exempted from federal groundwater protections.
In a letter Friday to the U.S. Environmental Protection Agency, California's Division of Oil, Gas and Geothermal Resources said it is instructing companies to develop a way for operators of adjacent oil fields to combine water quality and