On September 29, 2015,
the U.S. Environmental Protection Agency (EPA) provided an annual performance
evaluation of Oklahoma’s Class II Underground Injection
Control (UIC) program to the Oklahoma Corporation Commission (OCC) for the
fiscal year 2014.
As stated in the evaluation,
“EPA recommends that OCC implement additional regulatory actions to assure
protection of Underground Sources of Drinking Water . . . including further
reduction of injection volumes into the Arbuckle disposal formation in
seismically active areas.” EPA also suggested “further assessment and mapping
of the Arbuckle Formation, including its ability to transmit increased pore
pressure to basement rock, and the presence or absence of vertically confining
strata between the Arbuckle and basement rock.”
Already in early August
2015, OCC released an Oil and
Gas Disposal Well Volume Reduction Plan in response to earthquake
activities that occurred in July in Northern Oklahoma.
Written by Chloe Marie - Research Fellow
10/14/2015
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