UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

AIR, PESTICIDES & TOXICS MANAGEMENT DIVISION

61 Forsyth St., S. W.

Atlanta, Georgia 30303

FACT SHEET

– June 20 , 2014

ACTION: Preliminary Determination and Draft Outer Continental Shelf (OCS) Air

Permit

, OCS

- EPA

- R40 15 , for Anadarko Petroleum Corporation

(Anadarko)

, Eastern Gulf of Mexico Exploratory Drilling Operations

Public Notice & June 20 , 201 4 : Publication in the Panama City News

Comment Period: Herald, Mobile Press Register, Pensacola News Journal, The Florida

Administrative Code and Register , emails to the OCS public notice list,

www.regulations.gov , and the EPA Region 4’s website at:

http://www.epa.gov/region4/air/permits/ocsperm its/ocspermits.html

July 21 , 201 4 : Close of Public Comment Period

. If a public hearing is held,

the public comment period will automatically be extended to the close of the

public hearing.

Public H earing : If there is a significant degree of public interest, a hearing will be held

July 31, 2014, from 5:30 pm

– 7:00 pm at:

West Florida Public Library

239 North Spring Street

Pensacola, Florida 32502

(850) 436

- 5043.

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 additional information

on this proposed action during an informal public information session.

Project: Anadarko has applied for an OCS air permit pursuant to section 328 of the

Clean Air Act (CAA) from EPA Region 4

. The proposed air permit will

regulate emissions from a proposed exploratory drilling operation within the

Eastern Gulf of Mexico of the OCS. The proposed project will mobilize the

Trans ocean Discoverer Spirit , up to two support vessels to transport personnel

and supplies, and up to three support vessels for well completion

. The

proposed project will consist of three phases : the drilling phase, the well

completion phase, and the productio n well maintenance phase. The operation

will last no more than two years, and operate no more than 208 calendar days

per year. The proposed project is for exploratory drilling only and does not

include the establishment of any permanent production platform s

.

The EPA has completed a review of Anadarko ’s application in addition to all

supplemental materials provided and is proposing to issue Permit N umber

OCS

- EPA

- R40 15 to Anadarko for a two year exploratory drilling program

subject to the terms and conditions described in the draft permit. This project is

considered a major source under the applicable Prevention of Significant

Deterioration (PSD) regulations 40 CFR part 52.21 and is subject to the title V

program at 40 CFR part 71. The draft permit incorporates applicablerequirements from the federal PSD and title V operating permit programs,

New Source Performance Standards (NSPS), and National Emission Standards

for Hazardous Air Pollutants (NES HAP) as required by the OCS air quality

regulations in 40 CFR part 55.

Project Location: Anadarko’s project is located on the OCS in the Eastern Gulf of Mexico. The

drilling sites are located 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

.

Authority: EPA Region 4 is the agency responsible for implementing and enforcing CAA

requirements for OCS sou rces in the Gulf of Mexico e ast of longitude 87.5° W.

The Department of Interior , Bureau of Ocean Energy Management, is the lead

a gency for leasing and drilling approvals, as well as implementation of the

Clean Air Act west of 87.5 ° longitude

.

Emissions: The maximum potential ann ual emissions in tons per year for the drilling

vessel and support vessel s are summarized in the fo llowing table:

Potential to Emit for Regulated NSR Pollutants

Pollutant PTE (tpy ) Significant Emission Rate (tpy ) PSD Review Required

CO 3 70 100 Yes

NO

x 1 1,1 70 40 Yes

VOC 2 64.10 40 Yes

PM 3 3.77 25 Yes

PM 10 23.48 15 Yes

PM 2.5 22 .86 10 Yes

SO 2 3 0.7 6 40 No

H 2 SO 4 0.02 7 No

Pb 0.01 0.6 No

CO 2 e 7 4,571 75,000 (subject to regulation threshold) No

1 NO

x is a measured pollutant for the criteria pollutants ozone and NO 2 and a precursor for ozone and PM 2.5

.

2 VOC is a measured pollutant for the criteria pollutant ozone.

3 SO 2 is a precursor for the criteria pollutant PM 2.5

.

A full air quality impact analysis was performed for this project . A summary

of the results of the air quality impact analysis is available in the preliminary

determination (see additional information below).

Control Technology: Anadarko is required to apply Best Available Control Technology (BACT)

for emissions of NO X

, CO, VOC, and PM/PM 10 /PM 2.5

.

BACT requirements for the engines will include diesel engines equipped with

turbocharger, aftercooler, and high injection pressure

, tier

- certified engines

(where applicable), and good combustion practices. The project will also use

ultra

- low sulfur diesel fuel to limit sulfur di oxide and particulate emissions.

The main propulsion generator engines will be equipped with a Power

Management System (PMS) and NO

x concentration maintenance system

.

Additional Information: The draft permit and preliminary determination /statement of basis document s

that explain the permit conditions are available on EPA Region 4’s website at :

http://www.epa.gov/region4/air/permits/o cspermits/ocspermits.htmlEPA Contact: For questions regarding the draft permit and public hearing, contact:

Eva Land

Air Permits Section

Air, Pesticides and Toxics Management Division

U.S. EPA Region 4

61 Forsyth Street, SW

Atlanta, GA 30303

(404) 562

- 8435

Email: land.eva@epa.gov

C omments on the draft permit an d requests for a public hearing should be addressed to :

U.S. EPA Region 4

Air Permits Section, APTMD

61 Forsyth Street, SW

Atlanta, GA 30303

Attn: Rosa Yarbrough

Email: R4OCSpermits@epa.gov