***Draft for Public Notice***

Note: permit terms for OCS-EPA-R4019 are the same as for OCS-EPA-R4020

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

Region 4 

Atlanta, Georgia 

Permit to Construct and Operate Under the 

Outer Continental Shelf Air Regulations

Permit No. OCS-EPA-R4020

In accordance with the provisions of section 328 of the Clean Air Act (CAA), 42 U.S.C. § 7627 

and the implementing Outer Continental Shelf (OCS) Air Regulations at title 40 Code of Federal 

Regulations (CFR) part 55, which incorporate by reference the Prevention of Significant 

Deterioration of Air Quality (PSD) regulations at 40 CFR § 52.21 and the title V Operating 

Permit Program regulations at 40 CFR part 71,

Anadarko Petroleum Corporation

1201 Lake Robbins Drive

The Woodlands, Texas 77380

is hereby authorized to construct and operate air emissions units and to conduct other air 

pollutant emitting activities at an OCS source at multiple sites within the Eastern Gulf of 

Mexico. The drilling area is that area of the OCS 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. 

Upon commencing activities in the area identified as the project location, this OCS source and 

support vessels shall be constructed and operated in accordance with the terms and conditions set 

forth in this permit.

This permit is effective on: [insert effective date: 30 days after the date of the service of notice of 

the final permit decision under 40 CFR 124.15 and 71.11(i); or if no comments requested a 

change in the draft permit, the permit shall become effective immediately upon issuance], unless 

review of the permit decision is requested in accordance with 40 CFR 124.19 or 40 CFR 

71.11(l).

This permit shall expire on: [insert date 5 years from effective date]

This permit shall not relieve the owner or operator of the responsibility to comply fully with all 

applicable provisions of federal and state law.

__________ ______________________

Date Signed Beverly H. Banister

Director

Air, Pesticides, and Toxics

Management Division 
2

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

1 AUTHORITY

The United States Environmental Protection Agency (EPA) issues this permit pursuant to section 

328 of the CAA, 42 U.S.C. § 7627, and the implementing OCS Air Regulations at 40 CFR part 

55, which incorporate by reference the PSD regulations at 40 CFR § 52.21 and the title V 

Operating Permit Program regulations at 40 CFR part 71. This permit is based upon application 

materials submitted to EPA by Anadarko Petroleum Corporation (Anadarko) dated September 5, 

2013; supplemental submittals dated on September 18, 2013, November 26, 2013, December 5, 

2013, February 11, 2014, July 15, 2014, September 2, 2014 and September 10, 2014, in the 

administrative record for this permit action; and upon the technical analysis performed by EPA.

2 APPLICANT

Anadarko Petroleum Corporation

1201 Lake Robbins Drive

The Woodlands, Texas 77380

3 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.

4 PROJECT DESCRIPTION

The proposed project will mobilize the BlackHornet drillship owned by Diamond Offshore 

Drilling Inc. and associated support vessels. The support vessels may include a combination of 

supply boats, anchor handling boats, tug boats, barges, stimulation vessels and well evaluation 

vessels. The proposed project will consist of three phases: the drilling phase, the well completion 

phase, and the production well maintenance phase. Anadarko will conduct drilling activities at

multiple locations within the Eastern Gulf of Mexico area described in Section 3, Project 

Location, of this permit. Emissions from production well maintenance activities related to 

facilities on the sea floor are subject to regulation by this permit. This permit does not authorize 

the establishment of any permanent non-subsea production platforms.

Air pollutant emissions generated from the project include carbon monoxide (CO), oxides of 

nitrogen (NOx), particulate matter (PM), particulate matter with an aerodynamic diameter less 

than 2.5 microns (PM2.5), particulate matter with an aerodynamic diameter less than 10 microns 

(PM10), sulfur dioxide (SO2), and volatile organic compounds (VOC) (known as criteria 

pollutants), as well as other regulated air pollutants, including greenhouse gases (GHGs). VOC 

and NOx are the measured precursors for the criteria pollutant ozone, and NOx and SO2 are 

measured precursors for PM2.5. Based on emissions estimates and applicable permitting 

thresholds, the project is subject to the PSD and title V programs and has significant emissions of 
3

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

NOX, CO, PM, PM10, PM2.5, VOC, and GHGs. In addition, the BlackHornet is an area source of 

hazardous air pollutants pursuant to 40 CFR 63 subpart ZZZZ.

The BlackHornet emission units are identified in Table 1. Additional units on the stimulation 

vessel that will be used for OCS activities are listed in Table 2. Table 3 lists the representative 

support vessels.

Support vessels operating within 25 miles of the OCS source may include a combination of 

supply boats, anchor handling boats, tug boats, barges, stimulation vessels, and well evaluation 

vessels that run marine diesel engines. 

The information provided in Tables 1 through 3 is for description and identification purposes 

and does not establish operating limits.

Table 1 – BlackHornet Emissions Units

Emissions Unit 

ID

Description Make & Model Ratinga Manufacture 

Year

DR-ME-01 – 06 Main propulsion generator #1 

through #6

Hyundai-HiMsen 

9H32/40V

6,035 hp* 2012

DR-ME-07 – 08 Main propulsion generator #7 and 

#8 

Hyundai-HiMsen 

18H32/40V

12,069 hp 2012

DR-GE-01 Emergency Generator Cummins 

QSK60DMGE

2,547 hp 2011

DR-LB-01 – 06 Life boat engine #1 through #6 Siyang 485-J 41 hp

DR-AC-01 Emergency air compressor engine 

#1

Hatz 2M41 39 hp 2011

DR-FR-01 Fast rescue craft engine #1 SAAB-L4 Turbo 55 hp

DR-VG-01 – 02 Mud degasser#1 and #2 Burgess MagnaVac – Model 1500-

DR-VG-03 – 04 Mud degasser#3 and #4 Hampco

DR-DC-01 – 03 Dust collectors #1 through #3 National Oilwell 

Varco –DP46

26 M3/Min

DR-DC-04 Dust Collector #4 Vortex Ventures V 

V-ST-A-20 

850-1,000 

CFM

DR-FE-01 Drillship Fugitive Emissions - -

DR-PO-01 Painting operations - -

DR-WO-01 Welding operations - -

DR-FT-01 – 16, 

and -19

Various diesel fuel tanks - -

DR-FT-17 – 18 Various helicopter fuel tanks - -

Third Party Enginesb

DR-TP-01 – 02 Third party engine #1 and #2 Various-Tier II 

Certified

≤860 hp Varies

DR-TP-03 – 11 Third party engine #3 through #11 Various-Tier II 

Certified

≤ 300 hp Varies
4

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

DR-TP-12 – 16 Third party well evaluation engine 

#1 through #5

Detroit Diesel or 

equivalent

≤ 140 hp Varies

DR-TP-17 – 21 Third party engine #12 through #16 Various-Tier II 

Certified

≤ 126 hp Varies

DR-TP-22 Flowback boiler Various 8 MMBtu/hr Varies

DR-TP-23 Boom flare Various 60 

MMScf/day

Varies

DR-TP -24 – 26 Condensate tanks - 21,000 

gallons

Varies

a

Permit conditions may limit operation to less than rated capacity.

b These units are portable and brought on the drillship as needed by a third party supplier. The specific engine used will meet an 

equivalent or a higher EPA Tier standard.

* Horsepower

Table 2 – Well Completion Stimulation Vessel Emission Unitsa

Emissions 

Unit ID

Description Make & Model Ratingb(hp)*

SV-PE-01 – 08 Stimulation vessel pump engines Caterpillar 3512 DITA (or equivalent) 2,250

a The specific stimulation vessel used during the drilling project may vary based on availability. The engine and vessel used during 

the project will be an equivalent or a higher EPA Tier standard.

b Permit conditions may limit operation to less than rated capacity.

* Horsepower

Table 3 – Support Vessels

Vessel Description Representative Vessela

Supply Boat HOS Coral

Anchor Handling Boat Kirt Chouest

Well Completion Vessels Tug, Barge, Stimulation Vessel, Well Evaluation Vessel

a Specific supply boats, anchor handling boats, and well completion vessels available for use during the project had not been 

identified at the time of application. The representative vessel is the worst-case vessel in the potential vessel fleet and used to 

calculate potential emissions.

5 GENERAL CONDITIONS

5.1 Compliance

5.1.1 The permittee shall comply with all requirements of 40 CFR part 71, 40 CFR § 

52.21, 40 CFR part 55 and this permit. Failure to do so shall be considered a 

violation of section 111(e) of the CAA. All enforcement provisions of the CAA, 

including, but not limited to, the provisions of sections 113, 114, 120, 303 and 

304 of the CAA, shall apply to the OCS source and permittee.

[40 CFR §§ 55.8, 55.9(a) and (b)]
5

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.1.2 The permittee must comply with all conditions of this permit. All terms and 

conditions of this permit are enforceable by EPA and citizens under the CAA. 

Any permit noncompliance constitutes a violation of the CAA and is grounds for 

enforcement action; for permit termination, revocation and reissuance, or 

modification; or for denial of a permit renewal application.

[40 CFR §§ 55.8, 71.6(a)(6)(i)]

5.1.3 It shall not be a defense for a permittee in an enforcement action that it would 

have been necessary to halt or reduce the permitted activity in order to maintain 

compliance with the conditions of this permit.

[40 CFR § 71.6(a)(6)(ii)]

5.2 Permit Shield

Compliance with the terms and conditions of this permit shall be deemed compliance with the 

applicable requirements that are included and are specifically identified in this permit. Nothing in 

this permit shall alter or affect the following:

5.2.1 The provisions of CAA section 303 (emergency orders), including the authority of 

the Administrator under that section;

5.2.2 The liability of an owner or operator of a source for any violation of applicable 

requirements prior to or at the time of permit issuance; or

5.2.3 The ability of EPA to obtain information from a source pursuant to CAA section 

114.

[40 CFR § 71.6(f)(1)]

5.3 Other Credible Evidence

For the purpose of submitting compliance certifications in accordance with Condition 5.20 of 

this permit, or establishing whether or not a person has violated or is in violation of any 

requirement of this permit, nothing shall preclude the use, including the exclusive use, of any 

credible evidence or information relevant to whether a source would have been in compliance 

with applicable requirements if the appropriate performance or compliance test or procedure had 

been performed.

[CAA §§ 113(a) and (e)(1), 40 CFR §§ 60.11(g) and 61.12]
6

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.4 Construction and Operation

5.4.1 As approved and conditioned by this permit, all construction and operation, 

including equipment operations and maintenance of the OCS source and support 

vessels shall be in accordance with the data, specifications, drawings, exhibits, 

and assumptions included with the application and supporting materials submitted 

by the permittee, which resulted in this permit (application materials). This permit 

is valid only for the specific processes and operations applied for and indicated in 

the application materials. Any unauthorized deviation from the application 

materials, or from any term or condition of this permit may constitute grounds for 

revocation or enforcement action by EPA. 

5.4.2 The permittee shall properly operate and maintain the OCS source and support 

vessels, including all systems of treatment and control (and related appurtenances) 

that are installed and used by the permittee to achieve compliance with the terms 

and conditions of this permit. This provision includes the operation of backup or 

auxiliary facilities or similar systems when necessary to minimize or prevent 

emissions in achieving compliance with the terms and conditions of the permit.

[40 CFR § 52.21(r)(1)]

5.5 Compliance and Other Requirements

This permit does not relieve the permittee of the responsibility to comply fully with applicable 

provisions of any other requirements under federal law.

[40 CFR § 55.6(a)(4)(iii)]

5.6 Notification to Owners, Operators and Contractors

The permittee must notify all other owners or operators, contractors, and the subsequent owners 

or operators associated with emissions from the OCS source and support vessels of the terms and 

conditions of this permit prior to operation of any subject emissions unit.

[40 CFR § 55.6(a)(4)(iv)]

5.7 Expiration of Approval to Construct and Permit Renewal

5.7.1 This approval to construct shall become invalid if: construction is not commenced 

within 18 months after the effective date of this permit, construction is 

discontinued for a period of 18 months or more, or construction is not completed 

within a reasonable time. The EPA may extend the 18-month period upon a 

satisfactory showing that an extension is justified. For the purposes of this permit, 

periods greater than 18 months between drilling campaigns are not considered to 

be a discontinuation of construction.

[40 CFR § 52.21(r)(2)]
7

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.7.2 This permit shall expire on the expiration date on page one of this permit.

[40 CFR § 52.21(i)(3)]

5.7.3 Expiration of this permit terminates the permittee’s right to operate unless a 

timely and complete permit renewal application has been submitted at least six (6) 

months, but not more than 18 months, prior to the date of expiration of this 

permit. If the permittee submits a timely and complete renewal application, and 

EPA does not take final action on the renewal application before the end of the 

term of this permit, the permittee’s failure to have a permit is not a violation of 40 

CFR part 71 until the permitting authority takes final action on the renewal 

application. Such protection will cease to apply if, subsequent to EPA’s 

determination that the renewal application is complete, the permittee fails to 

submit by the deadline specified in writing by EPA any additional information 

identified as being needed to process the application. This condition does not 

supersede the limitation on the permittee’s authority to construct and operate set 

forth in Condition 5.7.2.

[40 CFR §§ 71.5(a)(1)(iii), 71.7(b), and 71.7(c)(1)(ii)]

5.7.4 If the permittee submits a timely and complete permit application for renewal, 

consistent with 40 CFR sections §§ 71.5(a)(1)(iii) and 71.5(a)(2), but EPA does 

not take final action on the renewal application before the expiration of this 

permit, then all the terms and conditions of this permit, including any permit 

shield granted pursuant to 40 CFR § 71.6(f), shall remain in effect until EPA takes 

final action on the renewal application.

[40 CFR §§ 71.7(c)(3) and 71.7(b)]

5.7.5 Renewal of this permit is subject to the same procedural requirements that apply 

to initial permit issuance, including those for public participation and affected 

State review.

[40 CFR §71.7(c)(1)(i)]

5.7.6 An application to EPA for renewal shall include all information required pursuant 

to 40 CFR § 71.5(c), as well as the current permit number, a description of permit 

revisions and off-permit changes that occurred during the permit term and were 

not incorporated into the permit during the permit term, any applicable 

requirements that were promulgated and not incorporated into the permit during 

the permit term, and other information required by the application form.

[40 CFR §§ 71.5(a)(2) and 71.5(c)(5)]

5.8 Property Rights

This permit does not convey any property rights of any sort or any exclusive privilege.

[40 CFR §71.6(a)(6)(iv)]
8

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.9 Inspections

The permittee, by accepting this permit, specifically agrees to allow authorized EPA personnel, 

upon presentation of credentials or other documents as may be required by law and at reasonable 

times, access to the premises where the permitted activity is located or conducted or where any 

records are required to be kept under the terms and conditions of this permit to:

5.9.1 Have access to and copy any records that must be kept under the conditions of the 

permit, including but not limited to, information relating to the OCS source, 

support vessels, monitoring data, or compliance or noncompliance with the 

permit;

5.9.2 Inspect the OCS source, support vessels, equipment, practices, or operation 

regulated or required under this permit; and

5.9.3 Sample or monitor any substances or parameters at any location reasonably 

necessary to assure compliance with this permit or EPA rules.

Reasonable times may depend on the nature of the concern being investigated.

[40 CFR §§ 71.6(c)(2) and 55.8]

5.10 Emergency Provisions

In addition to any emergency or upset provision contained in any applicable requirement, the 

permittee may seek to establish that noncompliance with a technology-based emission limitation 

under this permit was due to an emergency. An emergency constitutes an affirmative defense to 

an action brought for noncompliance with such technology-based emissions limitation. The 

permittee shall demonstrate the affirmative defense of emergency through properly signed, 

contemporaneous operating logs, or other relevant evidence that:

5.10.1 An emergency occurred and that the permittee can identify the cause(s) of the 

emergency; 

5.10.2 The permitted facility was at the time being properly operated; 

5.10.3 During the period of the emergency, the permittee took all reasonable steps to 

minimize levels of emissions that exceeded the emissions standards, or other 

requirements in this permit; and

5.10.4 The permittee submitted notice of the emergency to EPA within two (2) working 

days of the time when emission limitations were exceeded due to the emergency. 

This notice must contain a description of the emergency, any steps taken to 

mitigate emissions, and corrective actions taken. This notice fulfills the 

requirements of Condition 5.17.2 of this permit concerning prompt notification of 

deviations.
9

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

[40 CFR §§ 71.6(g)(2), 71.6(g)(3), and 71.6(g)(5)]

5.11 Burden of Proof for Emergencies

In any enforcement proceeding, the permittee attempting to establish the occurrence of an 

emergency has the burden of proof. 

[40 CFR § 71.6(g)(4)]

5.12 Emergency Defined

An “emergency” means any situation arising from sudden and reasonably unforeseeable events 

beyond the control of the source, including acts of God, which situation requires immediate 

corrective action to restore normal operation, and that causes the source to exceed a technologybased emission limitation under the permit due to unavoidable increases in emissions attributable 

to the emergency. An emergency shall not include noncompliance to the extent caused by 

improperly designed equipment, lack of preventive maintenance, careless or improper operation, 

or operator error.

[40 CFR § 71.6(g)(1)]

5.13 Certification Requirement

Any document required to be submitted under this permit shall be certified by a responsible 

official as to truth, accuracy, and completeness. Such certifications shall state that based on 

information and belief formed after reasonable inquiry, the statements and information in the 

document are true, accurate, and complete.

[40 CFR §§ 71.5(d), 71.6(c)(1), and 71.9(h)(2)]

5.14 Permit Actions

This permit may be modified, revoked, reopened, and reissued, or terminated for cause. The 

filing of a request by the permittee for a permit modification, revocation and reissuance, or 

termination, or of a notification of planned changes or anticipated noncompliance does not stay 

any permit condition.

[40 CFR § 71.6(a)(6)(iii)]

5.15 Reopening for Cause

The permit shall be reopened by EPA and the permit revised prior to expiration under any of the 

circumstances described in 40 CFR § 71.7(f).

[40 CFR § 71.7(f)]

5.16 Recordkeeping Requirements

In accepting this permit, the permittee understands and agrees that all information relating to this 

permitted source may be used by EPA as evidence in any enforcement case involving the 

permitted source arising under federal statutes, EPA rules, or rules enforceable by EPA.
10

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.16.1 This permit or a copy thereof shall be kept at the work site of the permitted 

activity.

5.16.2 The permittee shall furnish all records required by this permit.

5.16.3 During enforcement actions, the retention period for all records required by this 

permit will be extended automatically until the permittee receives written notice 

from EPA that the permittee no longer needs to retain these records.

5.16.4 The permittee shall hold at the corporate offices of Anadarko Petroleum 

Corporation, 1201 Lake Robbins Drive, The Woodlands, Texas 77380, all records 

required by the permit including, but not limited to, monitoring data and support 

information required by the permit, and records of all data used to complete the 

application for this permit. These materials shall be retained for at least five years 

from the date of the sample, measurement, or report unless otherwise specified. 

Records of all data used to complete the permit application must be kept for five 

years from the date of the application, unless otherwise specified. Support 

information includes all calibration and maintenance records and all original stripchart recordings for continuous monitoring instrumentation and copies of all 

reports required by the permit.

[40 CFR §§ 71.6(a)(3)(ii)(B) and 55.8]

5.16.5 Records of monitoring information shall include:

5.16.5.1 the date and time of sampling or measurements;

5.16.5.2 the emission unit or other place as defined in this permit; 

5.16.5.3 the operating conditions as existing at the time of sample or 

measurement;

5.16.5.4 the results of such samples or measurements;

5.16.5.5 the name of the person who performed the sampling or measurements; 

and

5.16.5.6 the analytical techniques or methods used.

[40 CFR § 71.6(a)(3)(ii)(A)]

5.16.6 When requested by EPA, the permittee shall furnish any information required by 

law which is needed to determine compliance with the permit. If the permittee 

becomes aware that relevant facts were not submitted or were incorrect in the 

permit application or in any report to EPA, the permittee shall, upon becoming 

aware of such facts or corrected information, promptly submit such facts or 

corrected information to EPA.

[40 CFR §§ 71.5(b) and 55.8]
11

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.16.7 All notifications, reporting or other communications relating to this permit shall 

be submitted to:

Chief

Air & EPCRA Enforcement Branch

Air, Pesticides and Toxics Management Division

U.S. EPA Region 4

61 Forsyth Street, SW

Atlanta, GA 30303

In addition, the permittee shall submit electronic copies of the above-referenced 

notifications and communications to the following individuals at their 

corresponding email address:

Name Email Phone

David Lloyd lloyd.david@epa.gov 404-562-9216

Jason Dressler dressler.jason@epa.gov 404-562-9208

Kelly Fortin fortin.kelly@epa.gov 404-562-9117

Eva Land land.eva@epa.gov 404-562-9103

5.16.8 The permittee shall furnish to EPA, within a reasonable time, any information that 

EPA may request in writing to determine whether cause exists for modifying, 

revoking, and reissuing, or terminating the permit, or to determine compliance 

with the permit. Upon request, the permittee shall also furnish to EPA copies of 

records that are required to be kept pursuant to the terms of the permit, including 

information claimed to be confidential. Information claimed to be confidential 

must be accompanied by a claim of confidentiality according to the provisions of 

40 CFR part 2, subpart B.

[40 CFR §§ 71.6(a)(6)(v),71.5(a)(3) and 55.8]

5.17 General Reporting Requirements

5.17.1 The permittee shall submit to EPA reports of any required monitoring for each six 

month reporting period from July 1 to December 31 and from January 1 to June 

30, except that the first reporting period shall begin when the OCS source 

commences activity subject to this permit and end on either June 30 or December 

31, whichever occurs first. All reports shall be submitted to EPA and shall be 

postmarked by the 30th day following the end of the reporting period. All 

instances of deviations from permit requirements must be clearly identified in 

such reports. All required reports must be certified by a responsible official 

consistent with Condition 5.13.

5.17.2 The permittee shall promptly report to EPA, by telephone or facsimile, deviations 

from permit conditions, the probable cause of such deviations, and any corrective 

actions or preventive measures taken. The report shall be made using the 

following numbers:
12

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

Telephone: (404) 562-9194 

Facsimile: (404) 562-9019 

Attn: Air Permits Part 71 Deviation Report

5.17.3 For the purposes of Condition 5.17.2 of the permit, prompt is defined as follows:

5.17.3.1 Any definition of prompt or a specific time frame for reporting 

deviations provided in an underlying applicable requirement as 

identified in this permit.

5.17.3.2 Where the underlying applicable requirement fails to address the time 

frame for reporting deviations, reports of deviations will be submitted

based on the following schedule:

5.17.3.2.1 for emissions of a hazardous air pollutant or a toxic air 

pollutant (as identified in the applicable regulation) that 

continue for more than an hour in excess of permit 

requirements, the report must be made within 24 hours of 

the occurrence; 

5.17.3.2.2 for emissions of any regulated pollutant excluding those 

referenced in Condition 5.17.3.2.1, that continue for more 

than two (2) hours in excess of permit requirements, the 

report must be made within 48 hours of the occurrence; or

5.17.3.2.3 for all other deviations from permit requirements, the report 

shall be submitted with the semi-annual monitoring report 

required in Condition 5.17.1.

5.17.4 Within 10 working days of the occurrence of a deviation that requires 24-hr or 48-

hr notification as provided in Condition 5.17.3.2 above, the permittee shall also 

submit a written notice, which shall include a narrative description of the 

deviation and updated information as listed below to EPA, certified consistent 

with Condition 5.13 of this permit.

5.17.5 When reporting excess emissions or permit deviations, including those that are 

required to be submitted for the first time with the semi-annual monitoring report, 

the permittee must report in writing the following information:
13

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.17.5.1 OCS Source (Facility) Name;

5.17.5.2 OCS Air Permit Number;

5.17.5.3 company Name;

5.17.5.4 date/time when the deviation was discovered;

5.17.5.5 date/time when the event began (24-hour clock);

5.17.5.6 date/time when the event ended (24-hour clock);

5.17.5.7 duration of the event: (hours: minutes) or days (total number of hours, 

minutes, or days; if intermittent then include only the duration of the 

deviation);

5.17.5.8 if the deviation was intermittent or continuous;

5.17.5.9 brief description of what happened and the cause, including 

information regarding the operating conditions during the deviation;

5.17.5.10 identification of the emission unit(s) or source(s) involved in the event 

using the same identification number(s) and name(s) as in the permit;

5.17.5.11 identification of each emission limit potentially exceeded during the 

event and the level of exceedance, if applicable;

5.17.5.12 whether the deviation was unavoidable;

5.17.5.13 describe corrective action taken and action taken to prevent future 

recurrence; 

5.17.5.14 if not corrected, the anticipated time the deviation is expected to 

continue and steps being taken to reduce, eliminate, and prevent 

recurrence of the deviation; and

5.17.5.15 certification: Based on information and belief formed after reasonable 

inquiry, certify that the statements and information reported are true, 

accurate, and complete.

5.17.6 For the purposes of Conditions 5.17.1 through 5.17.7, deviation means any 

situation in which the permittee fails to meet a permit term or condition. A 

deviation is not always a violation. A deviation can be determined by observation 

or through review of data obtained from any testing, monitoring, or recordkeeping 

required by this permit. For a situation lasting more than 24 hours, each 24-hour 

period is considered a separate deviation. Included in the meaning of deviation are 

any of the following:

5.17.6.1 a situation where emissions exceed an emission limitation or standard; 

5.17.6.2 a situation where process or emissions control device parameter values 

indicate that an emission limitation or standard has not been met; 

5.17.6.3 a situation in which observations or data collected demonstrate 

noncompliance with an emission limitation or standard or any work 

practice or operating condition required by the permit (including 

indicators of compliance revealed through parameter monitoring); and

5.17.6.4 a situation in which any testing, monitoring, recordkeeping or 

reporting required by this permit is not performed or not performed as 

required.
14

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.17.7 If requested by EPA, the permittee shall provide a more detailed written report as 

requested to follow up on an excess emissions/deviation report.

[40 CFR §§ 55.8, 71.6(a)(3)(i)(B), and 71.6(a)(3)(iii)]

5.18 Off Permit Changes

The permittee is allowed to make certain changes without a permit revision, provided that the 

following requirements are met:

5.18.1 Each change is not addressed or prohibited by this permit. 

5.18.2 Each change shall meet all applicable requirements and shall not violate any 

existing permit term or condition.

5.18.3 Each change may not include changes subject to any requirement under any 

provision of title I of the Clean Air Act.

5.18.4 The permittee shall provide contemporaneous written notice to EPA of each change 

under the provision, except for changes that qualify as insignificant activities under 

40 CFR § 71.5(c)(11). The written notice shall include the following:

5.18.4.1 a description of each change;

5.18.4.2 date of the change;

5.18.4.3 any change in emissions; 

5.18.4.4 list of pollutants emitted; and 

5.18.4.5 any applicable requirements that would apply as a result of the change.

5.18.5 The permit shield in Condition 5.2 does not apply to changes made under this 

provision.

5.18.6 The permittee shall keep a record describing all changes that result in emissions of 

any regulated air pollutant subject to any applicable requirement not otherwise 

regulated under this permit, and the emissions resulting from those changes.

[40 CFR §71.6(a)(12)]

5.19 Operational Flexibility

The permittee is allowed to make a limited class of changes under section 502(b)(10) of the CAA 

within this permitted facility without applying for a permit revision, provided the changes do not 

exceed the emissions allowable under this permit (whether expressed therein as a rate of 

emissions or in terms of total emissions) and are not title I modifications. This class of changes 

does not include changes that would violate applicable requirements or changes that would 

contravene federally enforceable permit terms and conditions that are monitoring (including test 

methods), recordkeeping, reporting, or compliance certification requirements.
15

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.19.1 The permittee is required to send a notice to EPA at least 7 days in advance of any 

change made under this provision. The notice must describe the change, when it 

will occur and any change in emissions, and identify any permit terms or 

conditions made inapplicable as a result of the change. The permittee shall attach 

each notice to its copy of this permit.

5.19.2 Any permit shield provided under Condition 5.2 does not apply to changes made 

under this provision.

[40 CFR §§ 71.2 and 71.6(a)(13)(i)]

5.20 Annual Compliance Certification

The permittee shall submit to EPA a certification of compliance with permit terms and 

conditions, including emission limitations, standards, or work practices, postmarked by February 

28 of each year and covering the previous calendar year except that the first certification shall 

cover the period from the date the OCS commences activities subject to this permit through 

December 31. The compliance certification shall be certified as to truth, accuracy and 

completeness by a responsible official consistent with Condition 5.13 of this permit. 

The certification shall include the following:

5.20.1 The identification of each permit term or condition that is the basis of the 

certification; 

5.20.2 The identification of the method(s) or other means used by the permittee for 

determining the compliance status with each term and condition during the 

certification period. Such methods and other means shall include, at a minimum, 

the methods and means required in this permit. If necessary, the permittee also 

shall identify any other material information that must be included in the 

certification to comply with section 113(c)(2) of the CAA, which prohibits 

knowingly making a false certification or omitting material information; 

5.20.3 The status of compliance with each term and condition of the permit for the 

period covered by the certification, including whether compliance during the 

period was continuous or intermittent. The certification shall be based on the 

method or means designated above. The certification shall identify each deviation 

and take it into account in the compliance certification; and

5.20.4 A report of NOX, CO, PM/PM10/PM2.5, SO2, VOC, GHG, and HAP emissions in 

tons per year emitted by each emissions unit regulated under this permit during 

the duration of the reporting period based on recorded data, including actual fuel 

usage and actual hours of operation. The report shall include the emission factors 

used for each unit and a description of the reproducible methodology used to 

calculate the emissions for the reporting period.

[40 CFR §§71.6(c)(5), 55.6(a)(4) and 55.8]
16

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.21 Compliance Schedule

For applicable requirements with which the source is in compliance, the permittee will continue 

to comply with such requirements. For applicable requirements that will become effective during 

the permit term, the permittee shall meet such requirements on a timely basis.

[40 CFR §§ 71.6(c)(3) and 71.5(c)(8)(iii)(A) and (B)]

5.22 Safe Shutdown

As provided in 40 CFR § 55.9(c), if this OCS source is ordered to cease operation of any piece of 

equipment due to enforcement action taken by EPA, the shutdown will be coordinated by EPA 

with the DOI Bureau of Safety and Environmental Enforcement, the United States Coast Guard, 

the permittee, and the operator to assure that the shutdown will proceed in a safe manner. No 

shutdown action will occur until after EPA’s consultation with these entities, but in no case will 

initiation of the shutdown be delayed by more than 24 hours after EPA consults with these 

agencies. The initiation of the shutdown process will not preclude well procedures necessary to 

ensure safety.

[40 CFR § 55.9(c)]

5.23 Transfer of Ownership

In the event of any changes in control or ownership of the OCS source, this permit shall be 

binding on all subsequent owners and operators. The permittee shall notify the succeeding owner 

and operator of the existence of this permit and its conditions by letter, a copy of which shall be 

forwarded to EPA Region 4 in accordance with Condition 5.16.7.

[40 CFR § 55.6(a)(4)(iv)]

5.24 Severability

The provisions of this permit are severable, and, in the event of any challenge to any portion of 

this permit or if any provision of the permit is held invalid, the remainder of this permit shall 

remain valid and in force.

[40 CFR §71.6(a)(5)]

5.25 General Testing Requirements

5.25.1 In addition to the specific testing requirements contained in the emission unit 

sections of this permit, the permittee shall comply with the generally applicable 

testing requirements in Conditions 5.25.2 through 5.25.10 whenever conducting a 

performance test required by this permit unless specifically stated otherwise in 

this permit.
17

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.25.2 The permittee shall provide EPA at least 30 days prior notice of any performance 

test, except as otherwise specified in this permit, to afford EPA the opportunity to 

have an observer present. If after 30 days notice for an initially scheduled 

performance test, there is a delay in conducting the scheduled performance test, 

the permittee shall notify EPA as soon as possible of any delay in the original test 

date, either by providing at least seven (7) days prior notice of the rescheduled 

date of the performance test, or by arranging a rescheduled date with EPA by 

mutual agreement.

5.25.3 The permittee shall submit to EPA a source test plan 30 days prior to any required 

testing. The source test plan shall include and address the following elements:

5.25.3.1 purpose and scope of testing; 

5.25.3.2 source description, including a description of the operating scenarios 

and mode of operation during testing and including fuel sampling and 

analysis procedures; 

5.25.3.3 schedule/dates of testing; 

5.25.3.4 process data to be collected during the test and reported with the 

results, including source-specific data identified in the emission unit 

sections of this permit; 

5.25.3.5 sampling and analysis procedures, specifically requesting approval for 

any proposed alternatives to the reference test methods, and addressing 

minimum test length (e.g., one hour, eight (8) hours, 24 hours, etc.) 

and minimum sample volume; 

5.25.3.6 sampling location description and compliance with the reference test 

methods; 

5.25.3.7 analysis procedures and laboratory identification; 

5.25.3.8 quality assurance plan; 

5.25.3.9 calibration procedures and frequency; 

5.25.3.10 sample recovery and field documentation; 

5.25.3.11 chain of custody procedures; 

5.25.3.12 quality assurance/quality control project flow chart; 

5.25.3.13 data processing and reporting; 

5.25.3.14 description of data handling and quality control procedures; and

5.25.3.15 report content and timing.

5.25.4 Only regular operating staff may adjust the processes or emission control devices 

during or within two (2) hours prior to the start of a source test. Any operating 

adjustments made during a source test that do not result in representative testing 

conditions may render the source test invalid.

5.25.5 For the duration of each test run (unless otherwise specified), the permittee shall 

record the following information:
18

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.25.5.1 all data which is required to be monitored during the test per the 

applicable condition of this permit that is requiring a test; and

5.25.5.2 all continuous monitoring system data that is required to be routinely 

monitored in the applicable condition of this permit for the emission 

unit being tested.

5.25.6 Each source test shall follow the reference test methods specified by this permit 

and consist of at least three (3) valid test runs conducted under normal operating 

conditions.

5.25.7 If the reference test method yields measured pollutant concentration values at an 

oxygen concentration other than specified in the emission standard, the permittee 

shall correct the measured pollutant concentration to the oxygen concentration 

specified in the emission standard by using the following equation:

PCX = PCm · (21-X)

 (21-Y)

Where:

PCX = Pollutant concentration at X percent;

PCm = Pollutant concentration as measured;

X = the oxygen concentration specified in the standard; and

Y = the measured average volumetric oxygen concentration.

5.25.8 Facilities for performing and observing the emission testing shall be provided that 

meet the requirements of 40 CFR § 60.8(e) and Reference Method 1 (40 CFR § 

60, Appendix A).

5.25.9 Emission test reports shall be submitted to EPA within 45 days of completing any 

emission test required by this permit. The report shall include the information 

required to be recorded pursuant to Condition 5.25.5 above.

5.25.10 Source test emission data shall be reported as the arithmetic average of all valid 

test runs in the units of any applicable emission limit, unless otherwise specified 

in the emission unit sections of this permit. The permittee shall also submit the 

raw test data, which may be submitted in electronic format.

[40 CFR §§ 71.6(a)(3) and 71.6(c)(1)]

5.26 Fee Payment

5.26.1 No later than April 1 of each year, the permittee shall submit the following to 

EPA:
19

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.26.1.1 Full payment of the annual permit fee, as specified in Conditions 

5.26.2 through 5.26.11; 

5.26.1.2 An updated fee calculation worksheet form and a photocopy of each 

fee payment check (or other confirmation of actual fee paid), as 

specified in Conditions 5.26.4 through 5.26.8; and

5.26.1.3 An annual emissions report of actual emissions, as specified in 

Condition 5.26.6, for the preceding calendar year.

5.26.2 The fee payment shall be in United States currency and shall be paid by money 

order, bank draft, certified check, corporate check, or electronic funds transfer 

payable to the order of the U.S. Environmental Protection Agency.

5.26.3 The permittee shall send fee payment and a completed fee filing form to either of 

the addresses listed below.

If sent by Regular Mail through U.S. Postal Service (USPS), send to:

U.S. Environmental Protection Agency

FOIA and Miscellaneous Payments

Cincinnati Finance Center

PO Box 979078

St. Louis, MO 63197-9000

If sent by Express Delivery (or when a physical address is required), send to:

U.S. Bank

Government Lockbox 979078 

US EPA FOIA & Misc. Payments

1005 Convention Plaza

Mail Station SL-MO-C2GL

St. Louis, MO 63101

Contact: Natalie Pearson

(314-418-4087)

5.26.4 The permittee shall send an updated fee calculation worksheet form and a 

photocopy of each fee payment check (or other confirmation of actual fee paid), 

submitted annually by the date specified in Condition 5.26.1, to:

Chief

Air Permits Section

Air, Pesticides and Toxics Management Division

U.S. EPA Region 4

61 Forsyth Street, SW

Atlanta, GA 30303
20

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.26.5 The annual emissions fee shall be calculated by multiplying the total tons of 

actual emissions of all “regulated pollutants (for fee calculation),” emitted from 

the source by the presumptive emission fee (in dollars/ton) in effect at the time of 

calculation. The presumptive emission fee is revised each calendar year and is 

available from EPA prior to the start of each calendar year.

5.26.5.1 “Actual emissions” means the actual rate of emissions in tons per year 

(TPY) of any “regulated pollutant (for fee calculation),” as defined in 

40 CFR § 71.2, emitted from a part 71 source over the preceding 

calendar year. Actual emissions shall be calculated using each 

emissions unit’s actual operating hours, production rates, in-place 

control equipment, and types of materials processed, stored, or 

combusted during the preceding calendar year.

5.26.5.2 Actual emissions shall be computed using methods required by the 

permit for determining compliance, such as monitoring or source 

testing data.

5.26.5.3 If actual emissions cannot be determined using the compliance 

methods in the permit, the permittee shall use other federally 

recognized procedures.

5.26.5.4 The permittee shall exclude the following emissions from the 

calculation of fees:

5.26.5.4.1 the amount of actual emissions of each “regulated pollutant 

(for fee calculation)” that the source emits in excess of 

4,000 tons per year; 

5.26.5.4.2 actual emissions of any “regulated pollutant (for fee 

calculation)” already included in the fee calculation; and

5.26.5.4.3 the insignificant quantities of actual emissions not required 

to be listed or calculated in a permit application pursuant to 

40 CFR § 71.5(c)(11).

5.26.6 The permittee shall submit an annual emissions report of its actual emissions for 

the preceding calendar year. The annual emissions report shall be certified by a 

responsible official and shall be submitted each year to EPA by the date specified 

in Condition 5.26.1. The annual emissions report shall be submitted to EPA at the 

address listed in Condition 5.26.4 of this permit.

5.26.7 Fee calculation worksheets shall be certified as to truth, accuracy, and 

completeness by a responsible official in accordance with Condition 5.13 of this 

permit.
21

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

5.26.8 The permittee shall retain, in accordance with the provisions of Conditions 5.16.4 

and 5.16.5 of this permit, all worksheets and other materials used to determine fee 

payments. Records shall be retained for five years following the year in which the 

emissions data is submitted.

5.26.9 Failure of the permittee to pay fees in a timely manner shall subject the permittee 

to assessment of penalties and interest.

5.26.10 The permittee, when notified by EPA of additional amounts due, shall remit full 

payment within 30 days of receipt of an invoice from EPA.

5.26.11 If the permittee believes that an EPA-assessed fee is in error and wishes to 

challenge such fee, the permittee shall provide a written explanation of the alleged 

error to EPA along with full payment of the EPA assessed fee.

[40 CFR § 71.9]

6 SPECIFIC CONDITIONS

6.1 Drill Site Notification

At least 10 days prior to entering the drill site, the permittee shall notify EPA in writing in 

accordance with Condition 5.16.7 of this permit, of the following information:

6.1.1 The location of the proposed drill site, using coordinates in latitude/longitude and 

Universal Transverse Mercator grid system formats;

6.1.2 The proposed date that the drillship will enter the lease block and commence 

construction or operation and the probable duration of operation at that location; 

and

6.1.3 The certification of maintenance and no physical changes required by Condition 

6.5.1.2 (if applicable); and

6.1.4 Not less than 24 hours prior to commencing construction or operation, of any 

changes to the information provided by the permittee in Condition 6.1.

[40 CFR §§ 71.6(a)(6)(v), 52.21 and 55.8]

6.2 Reserved.
22

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.3 Global Warming Potential (GWP)

For the purposes of showing compliance with any GHG emission limit in this 

permit, the GWP factors listed in 40 CFR Part 98 Subpart A, Table A-1 as of the 

date of this permit shall be used. The current GWP factors are listed below:

GHG Pollutant GWP Factor

CO2 1

CH4 25

N2O 298

SF6 22,800

[40 CFR § 98 Subpart A] 

6.4 Source-wide SO2 Emission Limit

The permittee shall not combust any diesel fuel with a sulfur content greater than 15 parts per 

million (ppm) by weight, as determined by Condition 6.4.1, in any diesel fueled emission unit on 

the BlackHornet or on any support vessel.

6.4.1 The permittee shall obtain a certification of sulfur content from the fuel supplier 

for all diesel fuel used on the BlackHornet, and used in all equipment and vessels 

used during well completion (the certification must indicate the sulfur content was 

determined by an approved EPA method), or the permittee shall obtain 

representative fuel samples using one of the methods in 40 CFR 80.330 and shall 

determine the sulfur content of the fuel using one of the methods in 40 CFR 

80.580.

6.4.2 Monitoring, Recordkeeping and Reporting

6.4.2.1 Prior to mobilizing the BlackHornet for activities covered by this 

permit, the permittee shall determine and record the sulfur content of 

the diesel fuel on the BlackHornet and the support vessels using the 

procedures in Condition 6.4.1.
23

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.4.2.2 Thereafter, the permittee shall determine and record the sulfur content 

of the diesel fuel on the BlackHornet and the support vessels using the 

procedures in Condition 6.4.1 upon receiving each fuel shipment.

6.4.3 The permittee shall provide the records required by Condition 6.4.2 and the 

certification(s) of sulfur content or results of all fuel sample analyses required by 

Conditions 6.4.1 and 6.4.2 with the Annual Compliance Certification required by 

Condition 5.20.

[40 CFR §§ 52.21, 71.6(a)(3) and (c)(1), and 55.8]

6.5 General Stack Test Requirements 

6.5.1 Within 12 months prior and no more than 3 months after the start of drilling under 

this permit, the eight main engines (DR-ME-01 through DR-ME-08) of the 

BlackHornet shall have been stack tested under the requirements Condition 5.25. 

6.5.1.1 If, after the initial stack tests, the drilling vessel discontinues drilling 

under the permit for more than 12 months, the permittee shall certify 

that a continuous maintenance program has been conducted and that 

no physical changes that could impact emissions have occurred since 

the latest stack test, or the permittee shall conduct a new stack test 

prior to restarting drilling operations in accordance with the general 

stack testing requirements set forth in Condition 5.25 and Conditions 

6.5.2 through 6.5.6. 

6.5.1.2 If a continuous maintenance program is selected from the options in 

Condition 6.5.1.1, the certification shall be included with the drill site 

notification required pursuant to Condition 6.1. Maintenance records 

shall be kept in accordance with the recordkeeping requirements set 

forth in Condition 5.16

6.5.2 Each stack test shall be conducted according to an EPA-approved source test plan 

set forth in Condition 5.25. 

6.5.3 Each stack test shall be conducted at three different loads spanning the expected 

range of operations.

6.5.4 At a minimum, each stack test shall test for emissions of CO, CO2, NOX, PM2.5/

PM10, VOC, and visible emissions.

6.5.5 During each test run, the permittee shall monitor and record the electrical power 

produced (in kW-hr). 
24

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.5.6 For each engine, each load, and each pollutant (CO, CO2, NOX, PM, PM2.5, PM10, 

VOC), the permittee shall determine emission rates in g/kW-hr or lb/hr. Pollutant 

test data obtained in accordance with Condition 6.5 or fuel usage monitoring data 

may be used to calculate CO2 and PM.

[40 CFR §§ 52.21 and 71.6(a)(1), (a)(3) and (c)(1)]

6.6 BlackHornet Emission and Operating Limits

 

6.6.1 Source Identification: DR-ME-01 through -08 (main propulsion generator 

engines).

6.6.1.1 The permittee shall not discharge or cause the discharge of emissions 

into the atmosphere from each engine in excess of:

6.6.1.1.1 NOX BACT Limit DR-ME-01 through DR-ME-08 

Operating at 50% Load and Above: 10.57 g/kw-hr on a 

rolling 24-hour average basis.

6.6.1.1.2 NOX BACT Limit DR-ME-01 through DR-ME-06 

Operating Below 50% Load: 57.3 lb/hr on a rolling 24-hour 

average basis.

6.6.1.1.3 NOX BACT Limit DR-MR-07 and DR-ME-08 Operating 

Below 50% Load: 103.5 lb/hr on a rolling 24-hour average 

basis.

6.6.1.1.4 CO Limit DR-ME-01 through DR-ME-08 Operating at 

50% Load and Above: 2.8 g/kw-hr on a rolling 24-hour 

average basis.

6.6.1.1.5 CO BACT Limit DR-ME-01 through DR-ME-06 Operating 

Below 50% Load: 16.6 lb/hr on a rolling 24-hour average 

basis.

6.6.1.1.6 CO BACT Limit DR-ME-07 through DR-ME-08 Operating 

Below 50% Load: 23.3 lb/hr on a rolling 24-hour average 

basis.

6.6.1.1.7 VOC BACT Limit DR-ME-01 through DR-ME-08 

Operating at 50% Load and Above: 0.8 g/kw-hr on a 

rolling 24-hour average basis.
25

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.1.1.8 VOC BACT Limit DR-ME-01 through DR-ME-06 

Operating Below 50% Load: 4.6 lb/hr on a rolling 24-hour 

average basis.

6.6.1.1.9 VOC BACT Limit DR-MR-07 and DR-ME-08 Operating 

Below 50% Load: 6.2 lb/hr on a rolling 24-hour average 

basis.

6.6.1.1.10 PM/PM10/PM2.5 BACT Limit DR-ME-01 through DR-ME08 Operating at 50% Load and Above: 0.40 g/kW-hr on a 

rolling 24-hour average basis.

6.6.1.1.11 PM/PM10/PM2.5 BACT Limit DR-ME-01 through DR-ME06 Operating Below 50% Load: 2.0 lb/hr on a rolling 24-

hour average basis.

6.6.1.1.12 PM/PM10/PM2.5 BACT Limit DR-ME-07 through DR-ME08 Operating Below 50% Load: 4.0 lb/hr on a rolling 24-

hour average basis.

6.6.1.1.13 GHG BACT Limit DR-ME-01 through DR-ME-08

Operating at 50% Load and Above: 856 g/kw-hr on a 

rolling 24-hour average basis.

6.6.1.1.14 GHG BACT Limit DR-ME-01 through DR-ME-06 

Operating Below 50% Load: 4,700 lb/hr on a rolling 24-

hour average basis.

6.6.1.1.15 GHG BACT Limit DR-MR-07 and DR-ME-08 Operating 

Below 50% Load: 8,299 lb/hr on a rolling 24-hour average 

basis.

6.6.1.2 The permittee shall use the following BACT work practice standards: 

6.6.1.2.1 main propulsion generator engines with LNE design,

including: turbocharger, aftercooler, and high injection 

pressure;

6.6.1.2.2 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight;

6.6.1.2.3 engines certified to IMO Tier II (or higher tier 

classification); 
26

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.1.2.4 good combustion practices based on the most recent 

manufacturer’s specifications issued for these engines at 

the time that the engines are operating under this permit; 

and

6.6.1.2.5 a parametric emissions monitoring system (PEMS) as

defined in the permit application received by EPA and 

found in the administrative record to be used in conjunction 

with an enhanced monitoring, maintenance, and load 

management system. 

6.6.1.2.6 A PEMS equivalent to the one identified in the application

may be used with prior written EPA approval.

6.6.1.2.7 The permittee will develop and implement an enhanced 

monitoring, maintenance and load management protocol

that will ensure good combustion practices and manage 

load levels to ensure combustion efficiency.

6.6.1.2.8 The permittee shall submit the enhanced monitoring,

maintenance, and load management system protocol with 

the annual compliance report as required in Condition 5.20.

6.6.1.3 Monitoring and Recordkeeping:

6.6.1.3.1 The permittee shall monitor and record NOX, CO, and CO2

emissions from the main generator diesel units specified in 

Condition 6.6.1 by using the parametric emissions 

monitoring system (PEMS) provided in Anadarko’s 

application or a parametric monitoring system equivalent to 

PEMS with EPA approval. The permittee may use a 

parametric monitoring system equivalent to PEMS only 

upon prior written approval by EPA.

6.6.1.3.1.1 The permittee shall monitor and record the 

following parameters once an hour:

 Generator Load in kWe and kWm; and

 NOx, CO, and O2 (ppm).

6.6.1.3.1.2 The permittee shall determine the stack flow rate 

using the method in Conditions 6.6.1.3.2.3 and 

6.6.1.3.2.4.
27

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.1.3.1.3 The permittee shall record the date and time of the 

most recent parametric monitoring system

calibration, the calibration results from the

parametric emissions monitoring system, and the 

calibration method used. 

6.6.1.3.1.4 The permittee shall determine the average emission 

rate of the monitored air pollutant and express in the 

units of the applicable emissions limit (g/kW-hr or 

lb/hr) for each engine from the emission rate results 

in each rolling 24-hour average basis period.

6.6.1.3.1.5 For any unrecorded NOx, CO, or CO2 concentration 

data of the PEMS:

6.6.1.3.1.5.1 the permittee shall substitute the previously 

monitored concentration for the same engine 

load, or

6.6.1.3.1.5.2 when NOx, CO, or CO2 concentration data is 

unrecorded, or the monitor is not performing 

to manufacturer specifications, for more than 

48-continuous hours, the permittee may 

submit a written request to the EPA asking the 

EPA to authorize the permittee to use stack 

test data in accordance with Condition 5.25, 

6.5, and 6.6.1.3.2.1 through 6.6.3.2.5 for NOX, 

CO, and/or CO2 emissions. If the permittee 

elects to make such a request, the permittee 

shall make the request within 72-hours of the 

beginning of the collection period of concern. 

The permittee may use stack test data only 

upon EPA’s written approval. The use of 

stack test data relieves the permittee of the 

obligation to comply with Condition 

6.6.1.3.1.5.1 for the missing data replaced by 

the stack test data.

6.6.1.3.2 The permittee shall monitor and record VOC and 

PM/PM10/PM2.5 emissions from diesel engines specified in 

Condition 6.6.1 by collecting stack testing data according 

to an EPA approved protocol and in accordance with 

Conditions 5.25, 6.5, and 6.6.1.3.2.1 through 6.6.1.3.2.5.
28

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.1.3.2.1 Each stack test shall be conducted at three different 

loads spanning the expected range of operations.

6.6.1.3.2.2 During each test run, the permittee shall monitor 

and record the electrical power produced (in kWhr).

6.6.1.3.2.3 The permittee shall prepare a graph of engine load 

versus emission rates expressed in the units of the 

applicable emissions limit, such as g/kW-hr or lb/hr 

for each engine. Plot the engine load as the 

independent (or x) variable and the pollutant 

emission rates as the dependent (or y) variable for 

each load point tested. Construct the graph by 

drawing straight-line segments between each load 

point. Draw a horizontal line to the y-axis from the 

minimum load point tested.

6.6.1.3.2.4 The permittee shall use the load information with 

the graph of engine load versus emission rates to 

determine the emission rate for each engine load 

recorded. Linear interpolation shall be used to 

determine the emission rate when the actual load 

falls between two tested load points, the permittee 

shall use linear interpolation between the two load 

points to determine the emission rate. When the 

engine load exceeds the maximum load measured 

during the stack testing, the g/kW-hr emission rate 

obtained for the highest load point tested during the 

most recent stack test may be used. When records 

of engine load are not available, the highest g/kWhr emission rate calculated for all the load points 

tested during the most recent stack test may be 

substituted. The average emission rate for each hour 

of operation from all individual emission rate 

results recorded during the hour will then be 

calculated.

6.6.1.3.2.5 The permittee shall determine the average emission 

rate for each unit from the hourly emission rate 

results on a rolling 24-hour average basis.

6.6.1.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.1 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17. 
29

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.2 Source Identification: DR-GE-01 (emergency generator engine).

6.6.2.1 The permittee shall use the following BACT work practice standards:

6.6.2.1.1 an emergency diesel engine with LNE design, including: 

turbocharger, aftercooler, and high injection pressure;

6.6.2.1.2 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight, and

6.6.2.1.3 an engine certified to IMO Tier II (or higher tier 

classification); and

6.6.2.1.4 good combustion practices based the most recent 

manufacturer’s specifications issued for this engine at the 

time that the engine is operating under this permit.

6.6.2.2 Operating Limit: This unit shall be operated no more than 100 hours 

per year of non-emergency, planned operation time on a 12-month 

rolling total basis.

6.6.2.3 The permittee shall maintain a record of hours of operation and sum 

such hours on a rolling 12-month basis. Hours of operation shall be 

recorded monthly from a non-resettable hour meter or, if such a meter 

is not available, by monitoring and maintaining a contemporaneous 

record of the following information:

6.6.2.3.1 unit ID;

6.6.2.3.2 engine tier certification;

6.6.2.3.3 date/time engine started;

6.6.2.3.4 date/time engine shut down;

6.6.2.3.5 name of person operating equipment (printed); and

6.6.2.3.6 signature of person operating equipment.

6.6.2.1 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.2 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.3 Source Identification: DR-AC-01 (emergency air compressor engine).

6.6.3.1 The permittee shall use the following BACT work practice standards:
30

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.3.1.1 an engine certified to EPA Tier 3 Nonroad (40 CFR §

1039) (or higher tier classification);

6.6.3.1.2 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight, and

6.6.3.1.3 good combustion practices based on the most recent 

manufacturer’s specifications issued for this engine at the 

time that the engine is operating under this permit.

6.6.3.2 Operating Limit: This unit shall be operated no more than 100 hours 

per year on a 12-month rolling total basis. 

6.6.3.3 The permittee shall maintain a record of hours of operation and sum 

such hours on a rolling 12-month basis. Hours of operation shall be 

recorded monthly from a non-resettable hour meter or, if such a meter 

is not available, by monitoring and maintaining a contemporaneous 

record of the following information:

6.6.3.3.1 unit ID;

6.6.3.3.2 engine tier certification;

6.6.3.3.3 date/time engine started;

6.6.3.3.4 date/time engine shut down;

6.6.3.3.5 name of person operating equipment (printed); and

6.6.3.3.6 signature of person operating equipment.

6.6.3.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.3 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.4 Source Identification: DR-LB-01 through DR-LB-06 (life boat emergency 

engines).

6.6.4.1 The permittee shall use the following work practice standards:

6.6.4.1.1 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight; and

6.6.4.1.2 good combustion practices based on the most recent 

manufacturer’s specifications issued for these engines at 

the time that the engines are operating under this permit.

6.6.4.2 Operating Limit: These units shall be operated no more than 100 hours 

per year each on a 12-month rolling total basis.
31

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.4.3 The permittee shall maintain a record of hours of operation for each 

engine and a record of the sum of such hours for each engine on a 

rolling 12-month basis. Hours of operation shall be recorded monthly 

from a non-resettable hour meter or, if such a meter is not available, by 

monitoring and maintaining a contemporaneous record of the 

following information:

6.6.4.3.1 unit ID;

6.6.4.3.2 date/time engine started;

6.6.4.3.3 date/time engine shut down;

6.6.4.3.4 name of person operating equipment (printed); and

6.6.4.3.5 signature of person operating equipment.

6.6.4.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.4 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.5 Source Identification: DR-FR-01 (fast rescue craft engine).

6.6.5.1 The permittee shall use the following work practice standards:

6.6.5.1.1 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight; and

6.6.5.1.2 good combustion practices based on the most recent 

manufacturer’s specifications issued for this engine at the 

time that the engine is operating under this permit.

6.6.5.2 Operating Limit: This unit shall be operated no more than 100 hours 

per year on a 12-month rolling total basis.

6.6.5.3 The permittee shall maintain a record of hours of operation and sum 

such hours on a rolling 12-month basis. Hours of operation shall be 

recorded monthly from a non-resettable hour meter or, if such a meter 

is not available, by monitoring and maintaining a contemporaneous 

record of the following information:

6.6.5.3.1 unit ID;

6.6.5.3.2 date/time engine started;

6.6.5.3.3 date/time engine shut down;

6.6.5.3.4 name of person operating equipment (printed); and

6.6.5.3.5 signature of person operating equipment.
32

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.5.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.5 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.6 Source Identification: DR-DC-01 through DR-DC-04 (mud and cement mixing, 

equipped with dust collectors).

6.6.6.1 The permittee shall use the following BACT work practice standard: 

proper maintenance and operation of the dust collectors in accordance 

with the most recent manufacturer’s specifications at the time that 

these dust collectors are operating under this permit.

6.6.6.2 The permittee shall ensure that the dust collector bin for each dust 

collector is not over capacity, and report any times where there is a 

high-level alarm, at which time the operator will investigate the cause 

and take corrective actions. For each high alarm event, the permittee 

shall record the following:

6.6.6.2.1 unit ID;

6.6.6.2.2 date/time of alarm;

6.6.6.2.3 corrective action taken, if any;

6.6.6.2.4 name of person operating equipment (printed); and

6.6.6.2.5 signature of person operating equipment.

6.6.6.3 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.6 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17. 

6.6.7 Source Identification: DR-VG-01 through DR-VG-04 (mud degassers).

6.6.7.1 The permittee shall not discharge or cause the discharge of emissions 

into the atmosphere from the mud degassers in excess of:

6.6.7.1.1 VOC BACT Limit: 5.36 tons per year combined on a 12-

month rolling total basis.

6.6.7.1.2 GHG BACT Limit: 271 tons per year CO2e combined on a 

12-month rolling total basis.

6.6.7.2 The permittee shall use the following BACT work practice standard: 

proper maintenance and operation of the mud degassing operations 

units in accordance with the most recent manufacturer’s specifications

at the time that these degassers are operating under this permit.
33

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.7.3 The permittee shall monitor and record the daily throughput of the 

synthetic based mud through each degassing unit.

6.6.7.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.7 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.8 Source Identification: DR-TP-01 through DR-TP-11 and DR-TP-17 through DRTP-21 (third-party engines). 

6.6.8.1 The permittee shall use the following BACT work practice standards:

6.6.8.1.1 engines to certified EPA Tier 2 Nonroad (40 CFR § 89) (or 

higher tier classification);

6.6.8.1.2 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight; and

6.6.8.1.3 good combustion practices based on the most recent 

manufacturer’s specifications issued for these engines at 

the time that these engines are operating under this permit.

6.6.8.2 Operating Limit: DR-TP-01 and DR-TP-02 shall be operated no more 

than 4,800 hours per year each on a 12-month rolling total basis, and 

each engine’s horsepower rating shall be less than or equal to 860.

6.6.8.3 Operating Limit: DR-TP-03 through DR-TP-11 shall be operated no 

more than the following 4,800 hours per year each on a 12-month 

rolling total basis, and each engine’s horsepower rating shall be less 

than or equal to 300.

6.6.8.4 Operating Limit: DR-TP-17 through DR-TP-21 shall be operated no 

more than the following 4,800 hours per year each on a 12-month 

rolling total basis, and each engine’s horsepower rating shall be less

than or equal to 126.

6.6.8.5 The permittee shall maintain a record of hours of operation for each 

engine and a record of the sum of such hours for each engine on a 

rolling 12-month basis. Hours of operation shall be recorded monthly 

from a non-resettable hour meter or, if such a meter is not available, by 

monitoring and maintaining a contemporaneous record of the 

following information:
34

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.8.5.1 unit ID;

6.6.8.5.2 engine tier certification;

6.6.8.5.3 date/time engine started;

6.6.8.5.4 date/time engine shut down;

6.6.8.5.5 name of person operating equipment (printed); and

6.6.8.5.6 signature of person operating equipment.

6.6.8.6 The permittee shall provide the following information for each engine 

used:

6.6.8.6.1 engine tier certificate; and

6.6.8.6.2 engine description including make, model year, and 

horsepower rating.

6.6.8.7 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.8 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.9 Source Identification: DR-TP-12 through DR-TP-16 (third-party well evaluation 

engines rated at less than or equal to 140 hp).

6.6.9.1 The permittee shall use the following BACT work practice standards:

6.6.9.1.1 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight; and

6.6.9.1.2 good combustion practices based on the most recent 

manufacturer’s specifications issued for these engines at 

the time that these engines are operating under this permit.

6.6.9.2 Operating Limit: DR-TP-12 through DR-TP-16 shall be operated no 

more than 125 hours per year each on a 12-month rolling total basis

and each engine’s horsepower rating shall be less than or equal to 140.

6.6.9.3 The permittee shall maintain a record of hours of operation and sum 

such hours on a rolling 12-month basis.

6.6.9.4 The permittee shall maintain a record of hours of operation for each 

engine and a record of the sum of such hours for each engine on a 

rolling 12-month basis. Hours of operation shall be recorded monthly 

from a non-resettable hour meter or, if such a meter is not available, by 

monitoring and maintaining a contemporaneous record of the 

following information:
35

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.9.4.1 unit ID;

6.6.9.4.2 date/time engine started;

6.6.9.4.3 date/time engine shut down;

6.6.9.4.4 name of person operating equipment (printed); and

6.6.9.4.5 signature of person operating equipment.

6.6.9.5 For each engine used, the permittee shall record an engine description 

including make, model year, and horsepower rating.

6.6.9.6 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.9 shall be submitted to EPA by the permittee 

in accordance with the reporting specifications detailed in Condition 

5.17.

6.6.10 Source Identification: DR-TP-22 (third party flowback boiler).

6.6.10.1 The permittee shall use the following BACT work practice standards:

6.6.10.1.1 diesel fuel with sulfur content less than or equal to 15 ppm 

by weight; and

6.6.10.1.2 good combustion practices based on the most recent 

manufacturer’s specifications issued for this boiler at the 

time that the boiler is operating under this permit.

6.6.10.2 Operating Limit: This unit shall be operated no more than 144 hours 

per year on a 12-month rolling total basis.

6.6.10.3 The permittee shall maintain a record of hours of operation and sum 

such hours on a rolling 12-month basis. Hours of operation shall be 

recorded monthly by monitoring and maintaining a contemporaneous 

record of the following information:

6.6.10.3.1 unit ID and description;

6.6.10.3.2 unit rating;

6.6.10.3.3 date/time boiler started;

6.6.10.3.4 date/time boiler shut down;

6.6.10.3.5 name of person operating equipment (printed); and

6.6.10.3.6 signature of person operating equipment.

6.6.10.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.10 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17.
36

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.11 Source Identification: DR-TP-23 (boom flare).

6.6.11.1 The permittee shall use the following BACT work practice standards:

6.6.11.1.1 maintain compliance with 40 CFR 60.18; 

6.6.11.1.2 good combustion practices; and

6.6.11.1.3 proper flare maintenance.

6.6.11.2 Operating Limit: This unit will have a throughput of no more than 360

MMscf per year on a 12-month rolling total basis.

6.6.11.3 The permittee shall monitor and maintain a record of the following:

6.6.11.3.1 date/duration of each flaring episode; 

6.6.11.3.2 type of fuel burned; and 

6.6.11.3.3 amount of gas flared in MMscf and the sum of such MMscf 

on a rolling 12-month basis.

6.6.11.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.11 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17.

6.6.12 Source Identification: DR-PO-01 (painting operations).

6.6.12.1 The permittee shall use the following BACT work practice standards:

6.6.12.1.1 best management practices, including but are not limited to: 

down spraying of paint, use of a containment system such 

as a shroud or a barrier around the section of the ship being 

painted whenever practical to prevent the airborne 

particulate matter from drifting into the atmosphere, and 

proper storage of coatings and thinners in non-leaking 

containers; and

6.6.12.1.2 use of an airless spray gun with transfer efficiency of 50% 

or greater; where it is not practical to use an airless spray 

gun, the permittee may use an air assisted spray gun with a 

transfer efficiency of 30% or greater.

6.6.12.2 Operating Limits: The permittee will use no more than 1,300 and 

5,200 gallons per calendar year of thinner and primer, respectively.
37

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.12.3 The permittee shall monitor and record the types and amounts (in 

gallons) of coatings and thinners used in a calendar year. Also, the 

permittee shall keep material safety data sheet (MSDS) information on 

file for all coatings and thinners used on the drillship.

6.6.12.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.12 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17.

6.6.13 Source Identification: DR-WO-01 (welding operations).

6.6.13.1 The permittee shall use the following BACT work practice standard: 

follow current manufacturer’s recommendations for all equipment 

used in welding operations at the time that that welding occurs under 

this permit, including but not limited to, recommendations regarding 

voltage levels.

6.6.13.2 The permittee shall maintain an accurate account of the quantity (in 

pounds) and type of welding rods used annually. This information may 

be obtained from delivery manifests or records maintained during use.

6.6.13.3 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.13 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17. 

6.6.14 Source Identification: DR-FT-01 through DR-FT-19 (diesel and helicopter fuel 

storage tanks) and DR-TP-24 through DR-TP-26 (condensate tanks).

6.6.14.1 The permittee shall not discharge or cause the discharge of emissions 

into the atmosphere from the storage tanks combined in excess of:

6.6.14.1.1 VOC BACT Emission Limit for DR-FT-01 through DRFT-19: 0.69 tons per year on a 12-month rolling total basis.

6.6.14.2 The permittee shall not discharge or cause the discharge of emissions 

into the atmosphere from the condensate tanks combined in excess of:

6.6.14.2.1 VOC BACT Emission Limit for DR-TP-24 through DRTP-26: 9.65 tons per year on a 12-month rolling total basis.
38

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.14.3 The permittee shall use the following BACT work practice standard: 

use of good maintenance practices.

6.6.14.4 The permittee shall use EPA’s TANKS 4.0.9d program to calculate 

emissions.

6.6.14.5 The permittee shall monitor and maintain the following information:

6.6.14.5.1 unit ID; and

6.6.14.5.2 the dimensions, fuel type or condensate stored, and 

capacities of units DR-FT-01 through DR-FT-19 and DRTP-24 through DR-TP-26.

6.6.14.6 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.14 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17.

6.6.15 Source Identification: DR-FE-01 (drillship fugitive emissions).

6.6.15.1 The permittee shall use the following BACT work practice standard: 

good maintenance practices to minimize fugitive emissions, including 

but not limited to, minimizing the release of emissions from valves, 

pump seals, and connectors from the fuel and mud pumping systems.

6.6.15.2 Compliance will be assured by performing a daily check to ensure that 

there are no leaks. Upon detection of a leak, the permittee shall 

maintain and record the following information:

6.6.15.2.1 date/duration of leak detection from valves, pump seals, 

and connectors; 

6.6.15.2.2 type of component; 

6.6.15.2.3 method of detection;

6.6.15.2.4 corrective action taken;

6.6.15.2.5 date of component reinspection;

6.6.15.2.6 name of person inspecting equipment (printed); and

6.6.15.2.7 signature of person inspecting equipment.

6.6.15.3 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.15 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17.
39

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.6.16 Fuel Use Limit.

6.6.16.1 Operating Limit: The BlackHornet shall not use more than 112 cubic 

meters per day of diesel fuel, not to exceed 18,438 cubic meters of 

diesel fuel on a rolling 12-month total basis.

6.6.16.2 The permittee shall maintain a record of fuel consumption for the 

duration of the project on a rolling 12-month basis.

6.6.16.3 The permittee shall monitor and maintain a record of the following 

information:

6.6.16.3.1 initial cubic meters of diesel fuel on the OCS source at the 

beginning of the project;

6.6.16.3.2 date of each diesel fuel delivery;

6.6.16.3.3 cubic meters of diesel fuel in each delivery;

6.6.16.3.4 name of person recording delivery (printed);

6.6.16.3.5 signature of recorder; and

6.6.16.3.6 final cubic meters of diesel fuel on the OCS source at the 

end of the project.

6.6.16.4 All information required to be collected, recorded, or maintained 

pursuant to Condition 6.6.16 shall be submitted to EPA by the 

permittee in accordance with the reporting specifications detailed in 

Condition 5.17.

[40 CFR §§ 52.21, 71.6(a)(1), (a)(3) and (c)(1) and 55.8]

6.7 Support Vessel Operating Limits

6.7.1 Any combination of supply boat (HOS Coral or substitute), anchor handling boat

(Kirt Chouest or substitute), Tug, Barge, or Well Evaluation Vessel (with 

equivalent or lower potential emissions to the vessels used in the application) 

shall not use more than:

6.7.1.1 200 barrels of diesel fuel per day when within 25 miles of the drilling 

vessel.

6.7.1.2 40,000 barrels of diesel fuel per year when within 25 miles of the 

drilling vessel.

6.7.2 The support vessels shall not combust any diesel fuel with sulfur content greater 

than 15 ppm by weight.

6.7.3 The permittee shall monitor and maintain a contemporaneous record of the

following information:
40

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.7.3.1 name of vessel;

6.7.3.2 units onboard the vessel, with short description and applicable ratings 

of each unit;

6.7.3.3 date/time entering the 25 nautical mile radius;

6.7.3.4 date/time exiting the 25 nautical mile radius;

6.7.3.5 sulfur content of all fuel used in any engine as specified in Condition 

6.4;

6.7.3.6 barrels of diesel fuel on the vessel entering the 25 nautical mile radius; 

6.7.3.7 barrels of diesel fuel on the vessel exiting the 25 nautical mile radius; 

and

6.7.3.8 barrels of diesel fuel loaded on to the vessel for each 24-hour period 

within the 25 nautical mile radius.

6.7.4 All information required to be collected, recorded, or maintained pursuant to 

Condition 6.7 shall be submitted to EPA by the permittee in accordance with the 

reporting specifications detailed in Condition 5.17.

[40 CFR §§ 52.21, 55.2, 55.6(a)(4), 55.8, and 71.6(a)(1), (a)(3) and (c)(1)]

6.8 Stimulation Vessel Emission Limits

6.8.1 Source Identification: SV-PE-01 through SV-PE-08 (stimulation vessel pump 

engines).

6.8.1.1 The permittee shall use the following BACT work practice standards:

6.8.1.1.1 diesel fuel with sulfur content less than or equal to 15 ppm 

by weigh; and

6.8.1.1.2 good combustion practices based on the most recent 

manufacturer’s specifications issued for this engine at the 

time that the engine is operating under this permit.

6.8.1.2 Operating Limit: SV-PE-01 through SV-PE-08 shall be operated no 

more than 4,032 hours per year combined on a 12-month rolling total 

basis.

6.8.1.3 The permittee shall maintain a record of hours of operation for each 

engine and a record of the sum of such hours for each engine on a 

rolling 12-month basis. Hours of operation shall be recorded monthly 

from a non-resettable hour meter or, if such a meter is not available, by 

monitoring and maintaining a contemporaneous record of the 

following information:

6.8.1.3.1 unit ID;

6.8.1.3.2 date/time engine started;
41

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.8.1.3.3 date/time engine shut down;

6.8.1.3.4 name of person operating equipment (printed); and

6.8.1.3.5 signature of person operating equipment.

6.8.2 For each engine used, the permittee shall record an engine description including 

make, model year, and horsepower rating. 

6.8.3 All information required to be collected, recorded, or maintained pursuant to 

Condition 6.8 shall be submitted to EPA by the permittee in accordance with the 

reporting specifications detailed in Condition 5.17.

[40 CFR §§ 52.21, 55.2, 55.6(a)(4), 55.8, and 71.6(a)(1), (a)(3) and (c)(1)]

6.9 Supply Boat Emission Limits

6.9.1 Source Identification: SB-DT-01 through SB-DT-15 (supply boat storage tanks).

6.9.1.1 The permittee shall not discharge or cause the discharge of emissions 

into the atmosphere from the storage tanks combined in excess of:

6.9.1.1.1 VOC BACT Emission Limit: 0.011 tons per year on a 12-

month rolling total basis.

6.9.1.2 The permittee shall use the following BACT work practice standard: 

use of good maintenance practices.

6.9.1.3 The permittee shall use EPA’s TANKS 4.0.9d program to calculate 

emissions.

6.9.1.4 The permittee shall monitor and maintain the following information:

6.9.1.4.1 Unit ID; and

6.9.1.4.2 The dimensions, fuel type, and capacities of units SB-DT01 through SB-DT-15. 

6.9.2 All information required to be collected, recorded, or maintained pursuant to 

Condition 6.9 shall be submitted to EPA by the permittee in accordance with the 

reporting specifications detailed in Condition 5.17.

[40 CFR §§ 52.21, 55.2, 55.6(a)(4), 55.8, and 71.6(a)(1), (a)(3) and (c)(1)]
42

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.10 Anchor Handling Boat Emission Limits

6.10.1 Source Identification: AB-DT-01 through AB-DT-19 (anchor handling boat diesel 

storage tanks).

6.10.1.1 The permittee shall not discharge or cause the discharge of emissions 

into the atmosphere from the storage tanks combined in excess of:

6.10.1.1.1 VOC BACT Emission Limit: 0.10 tons per year on a 12-

month rolling total basis.

6.10.1.2 The permittee shall use the following BACT work practice standard: 

use of good maintenance practices.

6.10.1.3 The permittee shall use EPA’s TANKS 4.0.9d program to calculate 

emissions for the semi-annual report.

6.10.1.4 The permittee shall monitor and maintain the following information:

6.10.1.4.1 Unit ID; and

6.10.1.4.2 The dimensions, fuel type, and capacities of units AB-DT01 through AB-DT-19. 

6.10.2 All information required to be collected, recorded, or maintained pursuant to 

Condition 6.10 shall be submitted to EPA by the permittee in accordance with the 

reporting specifications detailed in Condition 5.17.

[40 CFR §§ 52.21, 55.2, 55.6(a)(4), 55.8, and 71.6(a)(1), (a)(3) and (c)(1)]

6.11 New Source Performance Standards and National Emission Standard for Hazardous 

Air Pollutants (HAP) Requirements

6.11.1 The drillship main engines (DR-ME-01 through DR-ME-08), the emergency air 

compressor engine (DR-AC-01), and the third party engines (DR-TP-01 through 

DR-TP-11 and DR-TP-17 through DR-TP-21) are subject to 40 CFR part 60, 

subpart IIII based on engine size, per cylinder displacement, and model year. The 

permittee shall demonstrate compliance with the applicable requirements for these 

engines through the following:

6.11.1.1 The permittee shall maintain documentation in accordance with 

Condition 5.16 that engines specified in Condition 6.11.1 were 

installed and configured according to manufacturer’s specifications.
43

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.11.1.2 The permittee shall maintain records in accordance with Condition 

5.16 of manufacturer data indicating compliance with EPA Tier 

standards, if applicable, to the engine. 

6.11.1.3 The permittee shall operate and maintain the engines according to the 

manufacturer’s written instructions or procedures developed by the 

permittee that are approved in writing by the engine manufacturer. 

The permittee shall only change those settings that are approved by the 

manufacturer. The permittee shall maintain records of the 

manufacturer’s written instructions for operation and maintenance of 

the engine or the procedures the permittee developed that are approved 

in writing by the manufacturer in accordance with Condition 5.16.

6.11.1.4 The permitted engines shall not combust any diesel fuel that does not 

meet the requirements of Condition 6.4.

6.11.2 The emergency generator (DR-GE-01) is subject to 40 CFR part 60, subpart IIII 

based on the per-cylinder displacement and model year. The permittee has been 

granted a technical exemption pursuant to 40 CFR § 55.7 from the emission 

standard certification requirement of 40 CFR 60, subpart IIII and must comply 

with the following: 

6.11.2.1 The permittee shall demonstrate compliance with alternate emissions 

standards as specified in Condition 6.6.2.

6.11.2.2 The permittee shall comply with requirements defined in Conditions 

6.11.1.1 through 6.11.1.4.

6.11.3 Based on engine model years and engine use (summarized in Tables 1 and 2 of 

Section 4), the drillship main engines, the emergency generator, the emergency air 

compressor, and the third party engines are subject to and shall comply with the 

applicable requirements of 40 CFR part 63, subpart ZZZZ. The permittee shall 

demonstrate compliance with subpart ZZZZ for each engine by demonstrating 

compliance with the applicable requirements of 40 CFR part 60, subpart IIII and 

Conditions 6.11.1.1 through 6.11.1.4.

6.11.4 Based on engine model years and engine use (summarized in Tables 1 and 2 of 

Section 4) the well evaluation engines and the stimulation vessel pump engines 

(DR-TP-16 through DR-TP-21 and SV-PE-01 through SV-PE-08) are subject to 

and shall comply with the applicable requirements of 40 CFR part 63, subpart 

ZZZZ.
44

Anadarko BlackHornet OCS-EPA-R4020 11/14/2014

6.11.4.1 Existing stationary engines with a site rating of more than 300 hp 

located at an area source of HAP emissions on the OCS must comply 

with the applicable requirements in 40 CFR § 63.6603(c) and Table 2d 

in subpart ZZZZ in accordance with the compliance schedule 

requirements of Condition 5.21.

6.11.4.2 Existing stationary engines with a site rating less than 300 hp located 

at an area source of HAP emissions must comply with the applicable 

requirements in Table 2d in subpart ZZZZ in accordance with the 

compliance schedule requirements of Condition 5.21.

6.11.4.3 Compliance with any applicable numerical emission limitation 

established in subpart ZZZZ is based on the results of testing the 

average of three 1-hour runs using the testing requirements and 

procedures in 40 CFR § 63.6620.

6.11.4.4 Compliance with Condition 6.11 shall be determined based upon 

recordkeeping required by Condition 5.16.

[40 CFR part 63, subpart ZZZZ and 55.8]

6.11.5 Any new, modified, or reconstructed engine shall comply with all applicable 

NESHAP and NSPS, including but not limited to 40 CFR part 60, subpart IIII and 

40 CFR part 63, subpart ZZZZ, or obtain a technical exemption under 40 CFR 

§ 55.7.

6.11.6 The permittee shall notify EPA prior to use of any new, modified, or 

reconstructed engine intended to be used on the drilling vessel or in replacement 

of an engine in Tables 1 and 2 of Section 4 of this permit, and shall submit to 

EPA a reevaluation of the applicability of pertinent NESHAP and NSPS 

regulations, as well as copies of the manufacturer engine certification to EPA 

standards. 

6.11.7 The permittee shall maintain records in accordance with Condition 5.16 of the 

manufacturer engine certifications of all diesel units specified in Tables 1 and 2 of 

Section 4. 

[40 CFR §§ 71.6(a)(1), (a)(3) and (c)(1)]