                       UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
                                   Region 1
                        5 Post Office Square, Suite 100
                            Boston, MA  02109-3912


May 28, 2020



Jeffrey S. Crawford, Director
Bureau of Air Quality
Maine Department of Environmental Protection
17 State House Station
Augusta, ME 04333

Dear Mr. Crawford:    

On May 18, 2020, we received Maine's state implementation plan (SIP) revision request to add a negative declaration for the Oil and Natural Gas Industry Control Techniques Guidelines (CTG) published on October 27, 2016 (81 FR 74798).

We have determined that the submittal is administratively and technically complete.  We are currently reviewing the SIP revision to determine its approvability.

If you have any further questions on this issue, please contact David Mackintosh at 617-918-1584.

Sincerely,



Lynne A. Hamjian, Director
Air and Radiation Division
