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MarkWest Houston Gas Plant

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MarkWest Liberty Midstream & Resources, L.L.C. (Markwest) is currently authorized to operate its Houston Gas Plant under Air Quality Plan Approval PA-63-00936F. The Houston Gas Plant is located at 800 Western Avenue in Chartiers Township, Washington County.

Permitting/Approvals

On April 27, 2021, DEP received an Air Quality Plan Approval application (PA-63-00936I) from MarkWest that proposes to, among other things, operate the existing facility (currently permitted as a minor source) and make modifications as a Title V facility. This essentially means that MarkWest is requesting that DEP review the application as a major source facility.

On May 25, 2021, DEP issued an administrative incompleteness determination to MarkWest and requested additional information from the applicant within 10 business days.

Public Involvement

Announcements regarding DEP opportunities for public participation, including upcoming public meetings and/or hearings will be posted here.