The Ohio Environmental Protection Agency (Ohio EPA) has recently issued a package of draft general air permits that have been designed around a typical natural gas compressor station, according to an October 9, 2015 report from Trinity Consultants. Ohio EPA requested preliminary, informal comments on these draft general permits in September 2015 and plans to initiate a formal comment period after considering the initial feedback.

Ohio EPA expects that the draft general permits will cover the typical equipment found at a natural gas compressor station – including spark and compression ignition engines:

• Natural gas fired spark ignition compressor engines (four lean burn size choices [100-1350 hp], five rich burn size choices [100-3600 hp]) – The general permits incorporate emission limitations for NOx, CO, and VOC in accordance with New Source Performance Standards (NSPS) JJJJ; however, rich burn engines are subject to Best Available Technology (BAT) limitations even more stringent than the NSPS standards.
• Diesel engines (two size choices [175-350 hp or 350-750 hp]) –The general permits incorporate emission limitations in accordance with NSPS IIII.

The draft general permits, qualifying criteria, and guidance documents are available on Ohio EPA’s website.

What this means to you
Ohio has issued a draft package of air permits targeting natural gas compressor stations that includes rich and lean burn spark ignition compressor engines and also compression ignition engines.

MIRATECH can help
Contact MIRATECH to learn more about NOX, CO, and VOC emission controls for SI and CI engines in gas compression stations.