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EPA: 2 Pa. natural gas companies to improve safety

PITTSBURGH (AP) -- The U.S. Environmental Protection Agency says two natural gas companies have agreed to improve their operations in western Pennsylvania.

In a statement released Tuesday EPA alleges that Mark West Liberty Midstream & Resources and Laurel Mountain Midstream Operating failed to comply with safety aspects of federal clean air regulations to prevent accidental releases of flammable substances.

The EPA says Mark West has agreed to install new emergency equipment and adopt an approved maintenance schedule at all 14 of its compressor stations in Washington and Butler counties.

Laurel Mountain Midstream facility in Washington County also agreed to make improvements, as well as conduct training with local emergency responders.

The companies did not admit or deny the allegations, and both say they are committed to working with EPA and local communities.