*** PUBLIC NOTICE *** U.S. Environmental Protection Agency
Outer Continental Shelf Air Permit s OCS

- EPA

- R4019 and OCS

- EPA

- R4020

for Anadarko Petroleum Corporation
Public Comment Period: November 14 , 2014

– December 15 , 201 4 The United States Environmental Protection Agency (EPA) is seeking public comment on two draft Clean Air Act (CAA) Outer Continental Shelf (OCS) air permit s for Anadarko Petroleum Corporation ( Anadarko ), 1201 Lake Robbins Drive, The Woodlands, Texas 77380

. Anadarko has applied
for two OCS air permit s pursuant to section 328 of the Clean Air Act (CAA) from EPA Region 4. The proposed air permit s will regulate air emissions from exploratory drilling operation s within the Eastern
Gulf of Mexico of the O CS. The proposed project associated with draft permit OCS

- EPA

- R4019 will
mobilize the exploratory drillship Diamond BlackHawk and the proposed project associated with draft permit OCS

- EPA

- 4020 will mobilize the Diamond BlackHornet

. Each project will use up to two support vessels to transport personn el and supplies and up to four support vessels for well completion

. The drilling area s are located on the OCS east of longitude 87.5, west of the Military Mission Line (86°41’ west longitude), at least 100 miles from the Louisiana shoreline, and at least 125 miles from the Florida
shoreline. The proposed project s are for exploratory drilling and well completion and maintenance
activities only and do not include the establishment of any permanent production platforms.

EPA Region 4 is the agency responsible for implementing and enforcing CAA requirements for OCS sources in the Gulf of Mexico east of longitude 87.5o. Pursuant to section 328 of the CAA ( 42 U.S.C. § 7627 ) and the air quality regulations applicable to OCS source s set forth in Title 40, Code of Federal Regulations (CFR), part 55, these project s are required to obtain OCS air quality permit s and are subject to Prevention of Significant Deterioration (PSD) requirements th at apply to major sources and
also to title V operating permitting requirements. Anadarko must apply best available control technology (BACT), among other requirements, for emissions of NO X , CO, VOC, PM, PM 2.5 , PM 10 , and GHGs. The maximum potential annual emissions in tons per year for each drilling vessel and its support vessels are detailed in the application materials and in the preliminary determination/statement of basis associated with each draft permit . Potential annual emissions are also summarized in the project summary sheet.
Permit Documen ts: EPA has prepared two draft permit s for public comment, as well as a preliminary determination /statement of basi s for each draft permit that explain s the permit conditions. T he
draft permit conditions and preliminary determination documents are the same for both projects; they simply reference different drilling rigs

. These documents are available on EPA Region 4’s website at: http://www.epa.gov/region4/air/permits/ocsperm its/ocspermit s.html

. To request a copy of these
documents or to be added to our Anadarko OCS permit mailing list, please contact: Ms. Rosa Yarbrough, Permit Support Specialist

, at ( 404 ) 562

- 9643 or yarbrough.ro sa@epa.gov . For questions on the draft permit s , please contact: Ms

. Eva Land at ( 404 ) 562

- 9103 or land.eva@epa.gov

. Ms. Yarbrough and Ms. Land may also be reached by mail at USEPA Region 4, Air Permits Section APTMD, 61 Forsyth Street, SW, Atlanta, GA 30303. EPA’s draft permit s and preliminary determin ation s/statement s of bas i s ; Anadarko ’s application s and supporting do cumentation/data; and comments received from the public, other government agencies, and the applicant during the public comment period will become part of the
administrative record for the se permit s . All data submitted by the applicant is also available as part of the
administrative record. The administrative record is available at www.regulations.gov (d ock et # EPA

- R04

- OAR

- 2014

- 0728 ) , which can also be accessed through EPA’s website given above and at the EPA Region 4 office (please call in advance for available viewing times) at : 61 Forsyth Street, SW, Atlanta, GA 30303; Phone: (404) 562

- 9643. The web sites can be accessed through free internet services available at local public libraries.
Public C omments: All comments on the draft permit s must be received by email at R4OCS permit s@epa .gov, submitted electronically via www.regulations.gov (docket # EPA

- R04

- OAR

- 2014

- 0728 )

, or postmarked by December 15
, 2014

. Comments sent by mail should be addressed to: USEPA Region 4, Air Permits Section APTMD, 61 Forsyth Street, SW, Atlanta, GA 30303 Attn: Rosa Yarbrough

. An extension of the 30

- day comment period may be granted if the request for an extension issubmitted du ring the 30

- day public comment period and it adequately demonstrates why additional time

is required to prepare comments. Any interested person may submit written comments on the draft permit s during the public comment peri od. If you believe that any cond itions in the permit s are inappropriate, you must raise all reasonably ascertainable issues and submit all reasonably available arguments supporting your position by the end of the comment period. Any documents supporting your comments must be included in full and may not be incorporated by reference unless they are already part of the administrative record for these permit s or consist of state or federal statutes or regulations, EPA documents of general applicability, or other generally available reference materials. Comments should focus on the draft air quality permit s

. If you
have comments regarding offshore leasing, non

- air quality impacts, drilling safety, discharge, or other similar issues not subject to this public comment period

, you should submit t hem during the leasing and approval proceedings of the Bureau of Ocean Energy Management, which is the lead agency for offshore drilling

. All comments will be included in the administrative record s without change and will be made available to the public, including any personal information provided, unless the comment includes Confidential Business Information or other information whose disclosure is restricted by statute. Information that you consider Confidential Business Information or otherwise protected must be clearly identified as such and should not be submitted through email. If you send email directly to EPA, your email address will be captured automatically and included as part of the public comment. An email or

p ostal address must be provided with your comments if you wish to receive direct notification of EPA’s

final decision s regarding the permit s and response to comments submitted during the public comment period.

OCS

- EPA

- R4019 and OCS

- EPA

- R4020 contain the sa me permit terms. Hence, all comments will be considered for both permits and do not need to be repeated. All timely and relevant comments on the draft permit s will be consider ed in making the final decision

. EPA will respond to all significant

comments on the proposed permit s and may summarize and group similar comments in our response

. EPA will not respond to individual commenters directly. Public Hearing: R equests for a public hearing on the draft air permit s must be in writing and received by EPA by December 8

, 2014

. Requests should be sent by email to R4OCSp ermits @epa .gov or by mail addressed to: USEPA Reg ion 4, Air Permits Section , 61 Forsyth Street, SW, Atlanta, GA 30303

, Attn: Rosa Yarbrough

. EPA will hold a public hearing on the draft air permit s pursuant to 40 CFR §§ 71.11(f) and 124.12 if the Agency determine s that there is a significant degree of public interest in the draft permit s

. Requests for a public hearing must state the nature of the issues proposed to be raised in the hearing. If a public hearing is held, you may submit oral and/ or written comments on the proposed permit s at the hearing. You do not need to attend the public hearing to submit written comments. If EPA determines that there is a significant degree of public intere st, EPA will hold a public hearing from 5:30 to
7:0 0 pm on December 18 , 2014 , at : West Florida Public Library, 239 North Spring Street

, Pensacola, Florida 32502, (850) 436

- 5043

. If a public hearing is held, the public comment period will automatically be extended to the close of the public hearing. If no timely request s for a public hearing are received, or if EPA determines that there
is not a significant degree of public interest , a hearing will not be held

. S uch an announcement will be emailed to our OCS public notice list and posted on EPA’s website identified above

, or you may call EPA at the contact number above to determine if the hearing will not be held. If a public hearing is held, EPA staff will be available prior to the hearing , from 4:00

- 5:30 pm to answer questions and provide information on this proposed action duri ng an informal public information session. You are not required to attend the information session to comment at the public hearing, and you may also obtain addition al information about the project at EPA’s website listed above

. Final Determination: EPA will make a final decisio n to issue the permit s or to deny the application for the permit s after the Agency considers all comments on the draft air permit s . Notice of the final decision shall be sent to each person who has submitted written comments or requested notice of the final permit decision s , provided EPA has adequate contact information.