In consideration of current situation, the Wyoming Oil and Gas Conservation Commission on Tuesday approved a new rule that will require energy companies to test nearby water before drilling oil and natural gas wells.
Starting March 1, industry operators will have to test water quality once before drilling oil and gas wells, a second time 36 to 48 months after drilling and a third time at least 24 months after that.
The rule identifies chemicals, bacteria and other substances that must be tested for in groundwater. The rule also specifies that if there is an increase of substances beyond specified levels, operators must notify the state and property owners.
Groundwater subject to testing is water a half-mile from the oil and gas wellheads found in springs and wells used for domestic, livestock, industrial, municipal or irrigation purposes. If there are more than four water sources within a half mile, the rule allows operators to submit a plan to the Wyoming oil and gas supervisor to choose wells located in a radial pattern around the well.
The rule requires that operators test for dissolved methane. The approved rule set a lower tripwire than the previous version for the tested level of dissolved methane that would require operators to notify the state and landowners of methane’s presence in the water. The change was requested by environmental groups.
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