SEPA is continuing to investigate flaring at Mossmorran gas plant in Fife.
The environmental agency said it had received a “considerable” number of complaints from the public from the Shell and Exxon operated complex.
A SEPA spokesman said: “In terms of an update on Mossmorran, we are currently carrying out a full investigation into these incidents and the causes of flaring.
“As part of our investigation we will establish if any PPC permit conditions were breached, what actions the Operators will need to take to prevent reoccurrence of any similar events and any enforcement action that may be necessary.”
SEPA announced in June that it was investigating prolonged flaring in the area.
The agency also took part in a multi-agency meeting, convened by NHS Fife, to agree an action plan in light of concerns.
The meeting was also attended by Health Protection Scotland and Fife Council.
SEPA described it as a “prolonged and unsatisfactory situation” and as part of the investigation it will consider if any additional controls are required and any enforcement action that may be necessary.