The Commonwealth of Massachusetts has certified to the satisfaction of EPA that no sources are located in the Commonwealth which are covered by the following Control Techniques Guidelines:
(a)
Large Petroleum Dry Cleaners.
(b)
Natural Gas/Gasoline Processing Plants.
(c)
Air Oxidation Processes/SOCMI.
(d)
Polypropylene/Polyethylene Manufacturing.
Code of Federal Regulations
[52 FR 32792, Aug. 31, 1987]