ENVIRON International Corp. 8235 YMCA Plaza Drive, Suite 300, Baton Rouge, LA 70810 

V +1 225.408.2696 F +1 225.408.2747 

environcorp.com 

December 7, 2012 

Mr. Gregg M. Worley 

USEPA Region 4 

Air Permits Section 

61 Forsyth Street SW 

Atlanta, GA 30303-8960 

Re: Response to EPA Incompleteness Determination 

Statoil Gulf Services, LLC 

Title V and PSD Permit Application 

OCS Drilling and Exploration Activities 

Dear Mr. Worley:

Statoil Gulf Services, LLC (Statoil) submitted a Title V and Prevention of Significant 

Deterioration (PSD) permit application for proposed exploratory drilling in the Outer Continental 

Shelf (OCS) in the eastern Gulf of Mexico to EPA on September 5, 2012. On October 10, 2012 

EPA responded with a letter of incompleteness and a request for additional information required 

to continue the application review process. On behalf of Statoil, ENVIRON International 

Corporation (ENVIRON) is providing a response to each of the twenty-two completeness 

comments included in the letter. All available supporting documentation is included herein or as 

an attachment to this response letter. 

Please be aware that Statoil is waiting for vendor data that will affect the response to some of 

the completeness comments. A vendor will be providing Statoil with a detailed SCR quote for 

the Developer main generator engines, and Statoil should be receiving any available emission 

certification documents for the two emergency air compressor engines aboard the Discoverer 

Americas. Until Statoil has the emission certification documents, the final emission inventory 

and dispersion modeling cannot be updated. We have included notes in the responses below 

that require the SCR quote and/or the emission certification documents for completeness. We 

will provide detailed responses to the remaining comments as soon as we have received data 

from the vendors. 

 
USEPA Region 4 2 December 7, 2012 

Modeled Operational Scenarios 

Comment 1. Please provide data supporting the conclusion that the proposed 

dispersion modeling scenario produces the maximum impacts for the modeled 

pollutants for the full range of planned operating scenarios. Please provide the basis or 

explanation for the statement that operation at less than the maximum proposed loads 

with corresponding changes in stack release parameters would not result in higher 

model-predicted impacts. 

As described further in response to Comment 16, Statoil determined the worst-case operating 

scenarios resulting in reasonable worst-case emissions for each drilling vessel and support 

fleet. In addition, Statoil contends the worst-case emissions do result in the worst-case 

modeled impacts at the source-receptor distances relative to this project. Note, the nearest 

receptors are located more than 200 km from the source; therefore, stack parameters and 

building downwash will not significantly affect modeled results. 

A plume’s initial rise in both AERMOD and CALPUFF is characterized in terms of the stack 

parameters (temperature, velocity, etc.) and downwash parameters (building dimensions, as 

processed by BPIP). For small source-receptor distances, the initial plume rise can have a 

significant effect on predicted concentrations. For low initial plume rise, the plume centerline is 

closer to the ground and results in higher predicted concentrations at nearby receptors. 

However, at the source-receptor distances relevant to the current modeling effort (>200 km), the 

initial plume rise has little effect on predicted concentrations. At these down-wind distances, the 

puffs (plume) have expanded to fill the Planetary Boundary Layer (PBL, often called the mixed 

layer or mixing layer). The chemical species are well-mixed throughout the PBL, and the details 

of the release point have an insignificant effect on model-predicted concentrations. This is why 

the Protocol for this project specified that no building downwash would be included in the 

modeling. Similarly, differences in stack temperature and velocity at varying engine loads have 

an insignificant effect on model results at such distances. At these distances, predicted 

concentrations are primarily controlled by the emission rate. The choice of engine loads that 

results in the maximum short-term emission rate is addressed in the response to Comment 16. 

Modeled Emissions 

Comment 2. Tables 6.2.3-12 and 6.2.3-13 of the permit application provide the total 

support vessel emissions in each volume source modeled. Please provide the emission 

rates for each support vessel used in developing the ambient impact modeled emissions 

provided in these tables. 

Support vessel emission calculations are provided as Attachment 1 of this response letter. 

Please note that at the time of the September 2012 application, Statoil was provided with 

information stating the engines aboard the Peyton Candies vessel were certified EPA Tier 2; 

however, Statoil recently determined the Peyton Candies OSV engines are 

40 CFR 1043/MARPOL compliant but not certified to EPA Tier 2 standards. As a result of the 

new emission information, the proposed emission rates for the OSV engines are higher than 
USEPA Region 4 3 December 7, 2012 

presented in the original application, and the annual operating hours for the OSV engines have 

been lowered from the values presented in the original application. 

Detailed support vessel emission rate calculations will be provided to EPA in a revised Air 

Quality Impacts Analysis document after we receive the remaining supporting data for the 

Discoverer Americas emergency air compressor engines from the vendor and make any 

necessary updates to the dispersion modeling analysis. 

Comment 3. Please confirm that the modeled stack parameters for each emission unit 

were those producing the worst-case impacts for all operating characteristics. 

See the response for Comment 1. The initial plume rise (controlled by the stack parameters) 

has an insignificant effect on predicted concentrations at the source-receptor distances relevant 

to this project. 

Fuel Usage and Modeled Emissions 

Comment 4. The long-term emission rates for the support vessels were based on 

adjusted fuel usage and proposed annual run times. Please provide each support 

vessel’s adjusted fuel usage and proposed run times along with the basis for these 

values in the emissions calculation contained in Appendix B of the application. 

The proposed annual operation data for the OSVs and crew boats are based on historical 

support vessel operation data collected by Statoil. Fuel use calculations for the OSVs and crew 

boats are based on the estimated annual engine operation and diesel fuel properties. Statoil 

calculated proposed annual fuel usage limits for OSV engines and crew boat engines when 

within 25 nautical miles of the drill vessel of 622,416 gallons per year and 252,195 gallons per 

year, respectively. Fuel use calculations for the OSV and crew boat engines are provided in 

Tables 4-1 and 4-2 below. Please note that Statoil has revised the fuel usage calculations for 

the OSV based on recently received engine certification information discussed below. 

At the time of the September 2012 application, Statoil was provided with information stating the 

engines aboard the Peyton Candies vessel were certified EPA Tier 2; however, Statoil recently 

determined the Peyton Candies OSV engines are 40 CFR 1043/MARPOL compliant but not 

certified to EPA Tier 2 standards. As a result of the new emission information, the proposed 

emission rates for the OSV engines are higher than presented in the original application, and 

the annual operating hours for the OSV engines have been lowered from the values presented 

in the original application. These changes result in a proposed increase in OSV emission rates 

than previously proposed. The updated OSV emission rates are presented in response to 

Comment 17, and the revised OSV operating hours are presented in Table 4-1 below. 

 
USEPA Region 4 4 December 7, 2012 

Table 4-1 

OSV Engine Annual Fuel Use Estimate 

Engine 

Engine 

Rating

(HP) 

Annual 

Engine 

Load 

(%) 

Annual 

Operating 

Hours 

(hrs/yr) 

Annual 

Energy 

Usage 

(hp-hr/yr) 

Fuel 

Usage 

(gal/yr) a

Main Engine 1 2,367 100% 2,570 6,082,843 310,734 

Main Engine 2 2,367 100% 2,570 6,082,843 310,734 

Main Engine 3 2,367 0% 2,570 0 0 

Main Engine 4 2,367 0% 2,570 0 0 

Emergency 

Generator 

Engine 361 100% 51 18,552 948 

Total Fuel Usage per 180-day Campaign 622,416 

Notes: 

a – Fuel usage based on annual energy usage and a brake specific fuel 

consumption (BSFC) rate of 0.0511 gal/hp-hr. The BSFC rate is calculated from a 

BSFC rate of 7,000 Btu/hp-hr and a diesel heating value of 19,300 Btu/lb (AP-42 

Section 3.4-1, footnote a) and a density of 7.1 lb/gal (EPA AP-42 Table 7.1-2, Distillate 

Fuel Oil No. 2 at 60 F). 

Table 4-2 

Crew Boat Engine Annual Fuel Use Estimate 

Engine 

Engine 

Rating

(HP) 

Annual 

Engine 

Load 

(%) 

Annual 

Operating 

Hours 

(hrs/yr) 

Annual 

Energy 

Usage 

(hp-hr/yr) 

Fuel 

Usage 

(gal/yr) a

Main Engine 1 1,800 100% 612 1,101,600 56,274 

Main Engine 2 1,800 100% 612 1,101,600 56,274 

Main Engine 3 1,800 100% 612 1,101,600 56,274 

Main Engine 4 1,800 100% 612 1,101,600 56,274 

Generator Engine 1 125 100% 612 76,324 3,899 

Generator Engine 2 125 100% 612 76,324 3,899 

Thruster Engine 1 270 100% 612 164,959 8,427 

Thruster Engine 2 270 100% 612 164,959 8,427 

Total Fuel Usage per 180-day Campaign 252,195 

Notes: 

a – Fuel usage based on annual energy usage and a brake specific fuel 

consumption (BSFC) rate of 0.0511 gal/hp-hr. The BSFC rate is calculated from a BSFC 

rate of 7,000 Btu/hp-hr and a diesel heating value of 19,300 Btu/lb (AP-42 Section 3.4-1, 

footnote a) and a density of 7.1 lb/gal (EPA AP-42 Table 7.1-2, Distillate Fuel Oil No. 2 at 

60 F). 
USEPA Region 4 5 December 7, 2012 

Comment 5. Section 6.4.3 indicates the maximum short-term emission rates for the 

support vessels were based on the maximum 24-hour fuel usage. Whereas, Section 

6.2.2. indicates that short-term emissions from the vessels were based on maximum 

engine operation (i.e. 100 % load). Please clarify the basis upon which the fuel usage 

was calculated for the support vessels with respect to the engine loads. 

Maximum short-term emission rates (hourly and daily) for the OSV and crew boat engines are 

based on all engines operating simultaneously at 100 percent load for 24 hours per day. This 

scenario represents the maximum anticipated hourly emission rate for the support vessels, 

which is used for modeling against the short term hourly ambient air standards and for Class I 

visibility (24-hr). Annual fuel use calculations for OSVs and crew boats are based on long-term 

engine operation data (engine load and hours of operation) available from the OSV and crew 

boat operators and a conversion between engine output and diesel fuel input. Tables 4-1 and 

4-2 of this response letter provide the detailed annual fuel use estimate for each engine on the 

OSV and crew boat. 

Comment 6. It is unclear how the proposed fuel limitations and annual run times 

presented in Section 3 of the application are used in conjunction with the modeled 

emission results presented in Section 6 and Appendix B. Please clarify the basis upon 

which the fuel usage was calculated for the drilling vessels and support vessels with 

respect to the engine loads. 

Fuel use calculations for the drill vessels, OSVs, and crew boats are based on the estimated 

annual engine operation for each vessel and diesel fuel properties. Fuel use calculations for the 

OSV and crew boat engines are provided in response to Comment 4, (see Tables 4-1 and 4-2 

of this response letter). Statoil calculated proposed annual fuel usage limits for the Developer

and Discoverer Americas drilling vessel engines of 2,650,333 gallons per year and 

2,181,967 gallons per year, respectively. Fuel use calculations for the Developer and 

Discoverer Americas drilling vessel engines are provided in Tables 6-1 and 6-2 below. 

Please note, the short-term emissions and long-term emissions are calculated based on 

different engine load scenarios; therefore, short-term emissions are not simply multiplied by the 

engine hours of operation per year to calculate annual emission rates. Drill vessel, OSV, and 

crew boat operators provided both short-term and long-term engine operation scenarios 

(number of engines operating and the engine load) for each vessel. Annual fuel usage 

calculations are based the long-term engine operating scenarios for each vessel and an AP-42 

conversion factor to calculate fuel use per unit of engine output. The long-term emission 

calculations for each vessel are used to calculate the proposed fuel usage limitations, and the 

emission calculations correspond to the emission rates used in the dispersion modeling 

analysis. 

 
USEPA Region 4 6 December 7, 2012 

Table 6-1 

Developer Engine Annual Fuel Use Estimate 

Engine 

Engine 

Rating

(HP) 

Annual 

Engine 

Load 

(%) 

Annual 

Operating 

Hours 

(hrs/yr) 

Annual 

Energy 

Usage 

(hp-hr/yr) 

Fuel 

Usage 

(gal/yr) a

Main Engine 1 6,651 60% 4,320 17,239,392 880,652 

Main Engine 2 6,651 60% 4,320 17,239,392 880,652 

Main Engine 3 6,651 60% 4,320 17,239,392 880,652 

Main Engine 4 6,651 0% 4,320 0 0 

Main Engine 5 6,651 0% 4,320 0 0 

Main Engine 6 6,651 0% 4,320 0 0 

Main Engine 7 6,651 0% 4,320 0 0 

Main Engine 8 6,651 0% 4,320 0 0 

Emergency 

Generator 

Engine 2,551 100% 39 100,642 5,141 

Lifeboat 1 29 100% 12 348 18 

Lifeboat 2 29 100% 12 348 18 

Lifeboat 3 29 100% 12 348 18 

Lifeboat 4 29 100% 12 348 18 

Fast Rescue 

Boat 1 163 100% 12 1,956 100 

Cement Unit 

Engine 1 500 100% 60 30,000 1,533 

Cement Unit 

Engine 2 500 100% 60 30,000 1,533 

Total Fuel Usage per 180-day Campaign 2,650,333 

Notes: 

a – Fuel usage based on annual energy usage and a brake specific fuel 

consumption (BSFC) rate of 0.0511 gal/hp-hr. The BSFC rate is calculated from a 

BSFC rate of 7,000 Btu/hp-hr and a diesel heating value of 19,300 Btu/lb (AP-42 

Section 3.4-1, footnote a) and a density of 7.1 lb/gal (EPA AP-42 Table 7.1-2, Distillate 

Fuel Oil No. 2 at 60 F). 

   
USEPA Region 4 7 December 7, 2012 

Table 6-2 

Discoverer Americas Engine Annual Fuel Use Estimate 

Engine 

Engine 

Rating

(HP) 

Annual 

Engine 

Load 

(%) 

Annual 

Operating 

Hours 

(hrs/yr) 

Annual 

Energy 

Usage 

(hp-hr/yr) 

Fuel 

Usage 

(gal/yr) a

Main Engine 1 9,387 35% 4,320 14,193,144 725,038 

Main Engine 2 9,387 35% 4,320 14,193,144 725,038 

Main Engine 3 9,387 35% 4,320 14,193,144 725,038 

Main Engine 4 9,387 0% 4,320 0 0 

Main Engine 5 9,387 0% 4,320 0 0 

Main Engine 6 9,387 0% 4,320 0 0 

Emergency 

Generator 

Engine 3,097 100% 41 128,292 6,554 

Lifeboat 1 36 100% 12 432 22 

Lifeboat 2 36 100% 12 432 22 

Lifeboat 3 36 100% 12 432 22 

Lifeboat 4 36 100% 12 432 22 

Lifeboat 5 36 100% 12 432 22 

Lifeboat 6 36 100% 12 432 22 

Fast Rescue 

Boat 1 212 100% 12 2,544 130 

Emergency Air 

Compressor 

Engine 1 50 100% 6 300 15 

Emergency Air 

Compressor 

Engine 2 68 100% 6 408 21 

Total Fuel Usage per 180-day Campaign 2,181,967 

Notes: 

a – Fuel usage based on annual energy usage and a brake specific fuel 

consumption (BSFC) rate of 0.0511 gal/hp-hr. The BSFC rate is calculated from a 

BSFC rate of 7,000 Btu/hp-hr and a diesel heating value of 19,300 Btu/lb (AP-42 

Section 3.4-1, footnote a) and a density of 7.1 lb/gal (EPA AP-42 Table 7.1-2, Distillate 

Fuel Oil No. 2 at 60 F). 

   
USEPA Region 4 8 December 7, 2012 

Project Impact Assessment 

Comment 7. Although the nearest modeled receptors were indicated in Section 6.1 to be 

25 miles seaward of the state's seaward boundary. Section 6.3 Project Impact 

Assessment indicates that the impacts were performed at discrete shoreline receptors. 

This section also indicates that the significant monitoring concentration (SMC) 

assessment was performed at the shoreline receptors. [Note: The modeled 

concentrations provide in Table 6.3.1-1 for comparison to both the significant impact 

level (SIL) and SMC do not indicate different receptor locations.] The significant impact 

and SMC assessments should be performed at the same nearest PSD Class II receptors. 

Please provide revised analyses or further explanation for the use of different receptor 

locations. 

The Application incorrectly used the term “shoreline receptors” interchangeably with the term 

“25-mile receptors”. Inspection of the CALPUFF modeling files shows that only the 25-mile 

receptors were used for all relevant Class II assessments. A revised Air Quality Impact Analysis 

document containing the correct “25-mile receptor” terminology will be provided to EPA as soon 

as we receive the remaining supporting documentation from the vendor required to update 

emission estimates and make any necessary updates to the dispersion modeling analysis. 

Comment 8. The support vessels for both the short-term and long-term standards were 

modeled as a series of 10 volume sources in a line from the drilling location to 25 miles 

in the direction of the nearest PSD Class I area (Breton Wilderness). This is acceptable 

for the annual average ambient standard, but is not the worst-case location for the 1-hour 

standard. Modeling these vessels at the end of the required 25-mile pathway in the 

direction of the closest Class II receptor would be more appropriate for worst-case 

impacts. Please provide a revised analysis or further explanation of how the approach 

used is appropriate for a worst-case analysis. 

Typical support vessels (Peyton Candies, Claire Candies) have an average speed of about 

8 knots (15 km/hr). Given that the 25-mile radius is about 40 km, and that during most of the 

traverse of that distance the vessels would likely be traveling at least their average speed, the 

ten volume sources representing the support vessels should be spread over one third, rather 

than the full, of the 25-mile pathway from the nearest port to the drill vessel. A revised Air 

Quality Impact Analysis document will be provided to EPA as soon as we receive the remaining 

supporting documentation from the vendor required to update emission estimates and make any 

necessary updates to the dispersion modeling analysis. 
USEPA Region 4 9 December 7, 2012 

Comment 9. The application indicates that the 2008 version of the Federal Land Manager 

Air Quality Related Workgroup (FLAG) Phase I Report procedures were used to assess 

project impacts. However, revised 2010 procedures are available. Please clarify which 

procedure was used for the analysis. If the 2008 version was used, please provide the 

rationale for using the older version. 

ENVIRON used FLAG 2010 procedures but the September permit application mistakenly 

referenced the 2008 version. ENVIRON will correct this typographical error in the revised Air 

Quality Impact Analysis document to be submitted at a later date as noted previously. 

PSD Class I Air Quality Related Values (AQRV) Analysis 

Comment 10. The FLAG recommended default options were used for the AQRV analysis. 

It was also indicated in the application that NOx chemistry was used. These options are 

appropriate for the AQRV assessment but not for the PSD Class I increment assessment. 

Please clarify if the EPA recommended CALPUFF version and default options were used 

to assess project Class I concentration impacts. 

A CALPUFF control file contains an option (MREG) that instructs CALPUFF to test if a set of 

options “conform to the USEPA Long Range Transport (LRT) guidance.” This set of options is 

designed to assure compliance with the IWAQM Phase 2 Summary Report1

, and is listed in that 

document’s Appendix B with a recommended value MREG = 1. This in turn assures that 

CALPUFF uses the MESOPUFF-II Chemistry, and includes wet and dry deposition and 

associated depletion. The introduction to Appendix B of the document indicates that this 

Guidance is relevant for “not only concentration impacts, but also deposition flux impacts and 

visibility impacts.” This report was issued by EPA/OAQPS, and was co-authored by 

EPA/AQMD, the National Park Service, and the USDA Forest Service. 

The methodology and CALPUFF settings in this guidance have been used for PSD applications 

involving Class I areas for the last fifteen years. To ENVIRON’s knowledge, every PSD 

application since its issuance that involved a Class I area has followed this guidance. 

Nonetheless, in an effort to expedite the current permitting process, a revised Air Quality Impact 

Analysis document including the results of a separate CALPUFF run for the EPA, to address 

Class I Area Increment, will be provided to EPA as soon as we receive the remaining supporting 

documentation from the vendor required to update emission estimates and make any necessary 

updates to the dispersion modeling analysis. 

 

 

1

 Interagency Workgroup on Air Quality Modeling (IWAQM) Phase 2 Summary Report and Recommendations for 

Modeling Long Range Transport Impacts, EPA-454/R-98-019, December 1998, available at 

http://www.epa.gov/scram001/7thconf/calpuff/phase2.pdf. 
USEPA Region 4 10 December 7, 2012 

Comment 11. The results of the visibility extinction assessment exceeded the Federal 

Land Manager (FLM) threshold of concern of five percent. Please provide the basis or 

support for the statement that most of these days were likely impacted by natural 

obscuration. 

A revised Air Quality Impact Analysis document will be provided to EPA at a later date as noted 

previously. The revised analysis will adequately address the results of the visibility extinction 

assessment including any results that exceed the FLM threshold of concern of five percent. 

Ozone Impacts 

Comment 12. The project's NOx emissions are also an ozone precursor. Please address 

the expected impacts of the project's NOx emissions on the ambient ozone levels. 

A revised Air Quality Impact Analysis document will be provided to EPA at a later date as noted 

previously. The revised analysis will include an ozone analysis. 

Identification of Emissions Sources 

Comment 13. Please clarify the emission units present on the two drilling vessels and 

revise emission calculations if appropriate. 

A summary of equipment present on the Developer and Discoverer Americas drill vessels is 

presented in Tables 13-1 and 13-2 below, respectively. The Developer has electrically-powered 

forklifts, but the Discoverer Americas has two forklifts with diesel engines. Both drilling vessels 

have electrically-powered cranes and wireline units. Wireline units are operated by a third party 

and Statoil will require the use of electric motors and not diesel engines for these units. The 

cement unit engines on the Discoverer Americas will be required to use electric motors. Neither 

drilling vessels are equipped with incinerators, nor does the Developer have diesel-powered air 

compressor engines. The following tables include an updated equipment list for each drilling 

vessel, including equipment that is electric-powered and not a source of emissions. 

 
USEPA Region 4 11 December 7, 2012 

Table 13-1 

Developer Equipment 

Emissions Unit ID Source Description Quantity 

Diesel Engines 

GEN-1 thru GEN-8 Main Generator Engines 8 

EGEN Emergency Generator Engine 1 

CMU-1 and CMU-2 Cement Unit Engines 2 

LB Lifeboat Engines 4 

MOB Fast Rescue Boat Engine 1 

Electric Motors Powered by Main Generator Engines 

Not Applicable Wireline Units (electric) -- 

Not Applicable Forklifts (electric) -- 

Not Applicable Cranes (electric) -- 

Storage Tanks and Components 

FO ST Fuel Oil Storage Tanks 4 

FO SER ST Fuel Oil Service Tanks 2 

FO SET ST Fuel Oil Settling Tanks 2 

FO E GEN ST Emergency Generator Fuel Oil Tank 1 

FO CMV ST Cement Unit Fuel Oil Tank 1 

FO LB ST Lifeboat Fuel Tanks 1 per lifeboat 

FO MOB ST Fast Rescue Boat Fuel Tank 1 

AV ST Aviation Fuel Tanks 3 

WO ST Waste Oil Tanks 2 

FUG Fugitive Component Emissions -- 

   
USEPA Region 4 12 December 7, 2012 

Table 13-2 

Discoverer Americas Equipment 

Emissions Unit ID Source Description Quantity 

Diesel Engines 

GEN-1 thru GEN-6 Main Generator Engines 8 

EGEN Emergency Generator Engine 1 

ACOMP-1 and 

ACOMP-2 

Emergency Air Compressor Engines 2 

LB Lifeboat Engines 6 

MOB Fast Rescue Boat Engine 1 

FORK Forklift Engines 2 

Diesel Burner 

HTR Hot Oil Heater 1 

Electric Motors Powered by Main Generator Engines 

Not Applicable Cement Unit Engines (electric) -- 

Not Applicable Forklifts (electric) -- 

Not Applicable Cranes (electric) -- 

Storage Tanks and Components 

FO ST Fuel Oil Storage Tanks 3 

FO SER ST Fuel Oil Service Tanks 2 

FO SET ST Fuel Oil Settling Tanks 2 

FO E GEN ST Emergency Generator Fuel Oil Tank 1 

FO LB ST Lifeboat Fuel Tanks 1 per lifeboat 

FO MOB ST Fast Rescue Boat Fuel Tank 1 

AV ST Aviation Fuel Tank 1 

WS ST Waste Oil Tanks 2 

FUG Fugitive Component Emissions -- 

Based on the complete emission source inventory listed above, emission calculations for the 

Discoverer Americas have been updated to include forklifts. No additional updates to emission 

units in the emission inventory are required. Updated emission calculations will be provided to 

EPA with the revised Air Quality Impact Analysis document at a later date as noted previously. 

 
USEPA Region 4 13 December 7, 2012 

Emission Calculation Basis 

Comment 14. In Table 3.3.1-2, two emission factors each for NOx and CO from the main 

engines are given and identified as "Avg" and "Max." Please clarify how each of these 

emissions factors was derived and how they were used in calculating maximum annual 

and hourly emissions. Supporting vendor documentation should be included. 

The Discoverer Americas main engine NOX and CO emission factors were developed from New 

Source Performance Standards (NSPS) for Stationary Compression Ignition Engines 

(Subpart IIII) and main engine test data collected for certification with the International Maritime 

Organization (IMO) MARPOL Annex VI emission standards. The IMO certification summary for 

the main engines is provided in Attachment 2 of this letter. A summary of the emission 

certification data and the interpolated emission factors for the permit application are presented 

in Table 14-1 below. 

Table 14-1 

Discoverer Americas Main Engine Emission Factors 

Engine Load NOx CO 

(Percent) (kW-hr) (g/kW-hr) (lb/hr)a (g/kW-hr) (lb/hr) a

Engine Test Data for Different Engine Loads 

100 7,000 9.7 150 0.23 3.5 

75 5,250 10.4 121 0.17 2.0 

50 3,500 11.1 85 0.20 1.5 

25 1,750 13.9 54 0.49 1.9 

10 700 14.5 22 1.8 2.7 

Emission Factors Based on NSPS or Linear Interpolation 

80 5,600 10.3 127 0.18 2.2 

35 2,450 12.1 b 69 0.37 2.0 

Notes: 

a – Pound per hour emission rates based on one engine (7,000 kW * 

engine load factor * emission factor). 

b – Annual NOx emission factor (35 percent load) based on NSPS emission 

standard for engine. 

Annual Emission Factors 

Statoil based the annual CO and NOX emission calculations on actual operating scenarios for 

the Discoverer Americas main engines, engine test data for CO emissions, and the NSPS 

emission standard for NOX. The applicable NSPS for the main engines does not provide a CO 

emission standard for engines of that size. Therefore, the annual CO emission factor for the 

main engines is based on linear interpolation of the engine test data for 35 percent load, which 

is the expected normal operating load for the main engines. The NSPS provides a NOX

emission standard for the size and manufacture year of the Discoverer Americas main engines 
USEPA Region 4 14 December 7, 2012 

conforms to the IMO NOX emission standard, which is based on ship construction date and 

rated engine speed in revolutions per minute (rpm). The main engines have a rated speed of 

720 rpm, which based on the following equation results in a Tier I NOX emission standard of 

12.1 g/kW-hr: 

ଶ.଴݊ି ∗ 45 ൌ ൯ݎ-݄ ܹ݇⁄ ݃൫	ݐ݅݉݅ܮ	݊݋݅ݏݏ݉݅ܧ	ݔܱܰ	ܫ	ݎܶ݅݁

Where, 

n = rated engine speed (in rpm) 

Short-term Emission Factors 

The maximum hourly emissions for the Discoverer Americas main engines are based on 

operating 4 engines at 80 percent load. Therefore, the short-term NOX and CO emission factors 

are based on linear interpolation between the 100 percent and 75 percent engine load emission 

factors to derive an emissions factor at 80 percent load. 

Comment 15. Please provide engine test data, vendor supplied data, and any 

certifications used to calculate emissions for the Developer and Discoverer Americas. 

Attachment 2 of this letter provides all available engine test data and emission certifications for 

the two drill vessels, including: 

 Discoverer Americas Main Engine IMO Emission Certification; 

 Discoverer Americas Emergency Generator Engine IMO Emission Certification; 

 Discoverer Americas Forklift Engine Nameplate EPA Nonroad Interim Tier 4 Emission 

Certification; 

 Developer Main Engine IMO Emission Certification; 

 Developer Emergency Generator Engine IMO Emission Certification; 

 Developer Cement Unit Engines Tier 2 Emission Certification; 

 OSV Peyton Candies – Main Engine and Emergency Generator Engine – IMO Emission 

Certifications; and 

 Crew Boat Sybil Graham – Main Engines, Generator Engines, and Thruster Engines – 

Tier 2 Emission Certification Documents. 

Statoil is waiting to receive emission certification documents for the two emergency air 

compressor engines (ACOMP), and will provide the certification data to EPA once we have 

received the data. 
USEPA Region 4 15 December 7, 2012 

Comment 16. As summarized above in comment 1, a limited number of main engines 

operating at less than 100% load was selected to represent "normal" and "maximum 

hourly" operating configurations for each operating scenario. However, emissions 

should be based on worst case conditions to calculate the potential to emit and 

maximum hourly NOx emissions. It is unclear if the emissions calculations included in 

the application were based on a worst case scenario since NOx emission rates vary with 

load in large marine diesel engines. Please provide the emission rate versus load data 

that the vendor or Statoil has available and the engine operating configuration that would 

result in a worst case NOx emission rate. Please note that this worst-case emissions 

scenario may not be the same operating condition producing the worst-case impacts. 

As noted in response to Comment 1, worse-case emissions do produce the worst-case impacts 

at the source-receptor distances corresponding to this project. Therefore, Statoil worked closely 

with the drilling vessel owners to determine the normal and worst case (maximum hourly) 

operating scenarios for the engines aboard each vessel. Sections 3.2 and 3.3 of the original 

application include a description of the engine loads and expected run times for the engines 

utilized on the Developer and Discoverer Americas. 

Statoil obtained emission profiles for the main engines on the Discoverer Americas and the 

Developer drill vessels. Emission profiles include emission factors (gram pollutant per kilowatthour, g/kW-hr) at various engine loads (10, 25, 50, 75, and 100 percent). The Discoverer 

Americas main engine emission profile is provided in Table 14-1 of this response letter, and the 

Developer main engine emission profile is provided in Table 16-1 below. Each table presents 

the NOX and CO pound per hour emission rates for each engine load. While emission factors 

are generally higher at lower engine loads, it would not be appropriate to utilize a higher factor 

at a 10 percent load, for example, to an engine operating scenario where the engine is expected 

to be operating at 80 percent load. Statoil determined appropriate operating scenarios for each 

engine and then applied to emission factor corresponding to that particular engine load. 

The drill vessel owners provided Statoil with conservative maximum hourly and typical “normal” 

operating conditions (number of engines operating, the load on the operating engines, and the 

number of engines on standby). Statoil combined the conservative hourly and long-term main 

engine operating conditions with available NOX emission data. As presented in Tables 14-1 and 

16-1 of this response letter, the NOX emission factors are based on maximum tested values, 

interpolating between load test conditions, or NSPS emission limits. The selection of the NOX

emission factors is based on developing conservative emission rate estimates for the main 

engines. 

The operating scenarios represent reasonable operating conditions corresponding to average 

annual (per campaign) or maximum short term (hourly) operations. There are no normal or 

maximum operating scenarios where all six or eight main engines on either drilling vessel would 

be operating simultaneously. Some engines are on standby for maintenance while others are 

on standby to be available for contingency back-up plans. Similarly, it is not reasonable to 

expect one of the main engines to operate at 100 percent load for any duration of time as the 
USEPA Region 4 16 December 7, 2012 

engines are designed to operate at loads less than maximum design capacity, and standby 

engines are readily available for use during heavy power demands such that no one engine 

would bear an unrealistic load for any period of time to minimize safety concerns and engine 

wear. 

Table 16-1 

Developer Main Engine Emission Factors 

Engine Load NOx CO 

(Percent) (kW-hr) 

(g/kWhr) (lb/hr)a (g/kW-hr) (lb/hr) a

Engine Test Data for Different Engine Loads 

100 4,960 7.8 84.8 0.39 4.3 

75 3,720 8.2 66.9 0.24 2.0 

50 2,480 7.6 41.4 0.33 1.8 

25 1,240 6.4 17.4 1.2 3.4 

10 496 4.6 5.0 3.1 3.3 

Emission Factors for Application b

60 2,976 8.2 53.5 0.39 2.6 

Notes: 

a – Pound per hour emission rates based on one engine (4,960 kW * 

engine load factor * emission factor). 

b – The NOX and CO emission factors for the permit application are 

conservatively based on the maximum emission factor from the 50, 75, and 

100 percent engine load tests. 

Comment 17. Please clarify the rationale for selecting the offshore support vessel 

Peyton Candies and the crew boat Sybil Graham as representative vessels including the 

engine data referenced in the determination, the vendor data and certifications 

referenced with respect to the emissions factors used in the emissions calculations, and 

the relationship between the emissions calculations presented in the application and the 

adjusted fuel usage. 

As stated in the application, Statoil has access to various OSV and crew boats to support their 

operations in the Gulf of Mexico. At the time of preparing the application, the Peyton Candies 

(OSV) and the Sybil Graham (crew boat) represented the worst-case emission rates of the 

available support vessels because these vessels have the highest total horsepower and 

associated emissions compared to other available OSVs or crew boats. Statoil reserves the 

right to use other support vessels and will confirm engine emission rates will be less than or 

equal to the worst-case vessel emissions provided in the application and this response letter. 

Maximum hourly emissions for the support vessels are based on the OSV and crew boat 

engines operating simultaneously at 100 percent load, which represents the worst-case 

emission scenario. The hourly emission calculations are very conservative because it is very 
USEPA Region 4 17 December 7, 2012 

unlikely that all support vessel engines (main engines, emergency generator engines, etc.) 

would operate at 100 percent load at the same time. Maximum daily emission rates are based 

on the hourly emissions (all engines at 100 percent load) and all support vessel engines 

operating for 24 hours per day. 

Annual support vessel engine emissions are based on long-term engine operation data (engine 

load and hours of operation) available from the OSV and crew boat operators and a conversion 

between engine output and diesel fuel input. Tables 4-1 and 4-2 of this response letter provide 

the long-term engine operation data for each engine on the OSV and crew boat. 

Engine emission data supporting the emission calculations for the support vessels are provided 

in Attachment 2 of this response letter. Please note that at the time of the application, Statoil 

was provided with information stating the engines aboard the Peyton Candies vessel were 

certified EPA Tier 2; however, Statoil recently found the Peyton Candies OSV engines are 

40 CFR 1043/MARPOL compliant, which requires certification to a lower emissions standard 

than EPA Tier 2. Updated OSV engine annual operating hours and emission factors (NOX and 

particulate matter) are presented in Table 17-1 and 17-2 below, and an updated set of Part 71 

forms for the Developer are provided in Attachment 3 of this response letter. ENVIRON will 

provided EPA with updated Part 71 forms for the Discoverer Americas upon completion of 

emission calculations that will be revised to incorporate new emissions data that is currently 

pending as noted previously. 

A revised Air Quality Impact Analysis document will be provided to EPA at a later date as noted 

previously. The revised analysis will clarify that the modeling assessment is based on 

maximum hourly, daily, and annual emission rates calculated as described above. The longterm emission calculations for each vessel are used to calculate the proposed fuel usage 

limitations, and the emission calculations correspond to the emission rates used in the 

dispersion modeling analysis. 

Table 17-1 

Offshore Support Vessel Engine Operating Summary 

Source 

Maximum 

Power Rating 

(kW) 

Normal 

Operation 

Power Rating 

(kW) 

Normal 

Operation 

Annual 

Hours 

(hr/yr) 

Maximum 

Hourly Power 

Rating 

(kW) 

OSV Main Engine No. 1 1,765 1,765 2,570 1,765 

OSV Main Engine No. 2 1,765 1,765 2,570 1,765 

OSV Main Engine No. 3 1,765 0 2,570 1,765 

OSV Main Engine No. 4 1,765 0 2,570 1,765 

OSV Emergency 

Generator Engine 

269 269 51 269 
USEPA Region 4 18 December 7, 2012 

Table 17-2 

Updated Offshore Support Vessel Engine Emission Factors 

Pollutant 

Main Engines 

Emission Factor 

 (g/kW-hr) 

Emergency 

Generator 

Emission Factor 

 (g/kW-hr) 

Emission 

Factor Basis 

Total VOC 0.43 1.53 AP-42 

NOx 10.90 10.42 IMO Certification 

SO2 0.007 0.007 Mass Balance 

CO 3.35 4.06 AP-42 

PM 0.30 1.63 AP-42 

PM10 0.24 1.34 AP-42 

PM2.5 0.24 1.30 AP-42 

CO2e 696.60 696.60 EPA 

Lead 1.23E-04 1.23E-04 EPA 

Benzene 3.30E-03 3.97E-03 AP-42 

Toluene 1.20E-03 1.74E-03 AP-42 

Xylenes 8.22E-04 1.21E-03 AP-42 

Formaldehyde 3.36E-04 5.02E-03 AP-42 

Acetaldehyde 1.07E-04 3.27E-03 AP-42 

Acrolein 3.36E-05 3.94E-04 AP-42 

Naphthalene 5.54E-04 3.61E-04 AP-42 

1,3-Butadiene -- 1.66E-04 AP-42 

Fuel use calculations for the OSV and crew boat are based on annual engine usage and diesel 

fuel properties. Statoil is providing the support vessel annual fuel usage data to EPA to assist in 

the development of permit conditions for tracking OSV and crew boat operations during the 

drilling campaign. Statoil calculated annual fuel usage limits for OSV engines and crew boat 

engines when within 25 miles of the drill vessel of 622,416 gallons per year and 252,195 gallons 

per year, respectively. Fuel use calculations for the OSV and crew boat engines are provided in 

response to Comment 4, Tables 4-1 and 4-2 of this response letter. The long-term emission 

calculations for each vessel align with the proposed fuel usage limitations and with the emission 

rates used in the dispersion modeling analysis. 

   
USEPA Region 4 19 December 7, 2012 

Identification of Applicable Requirements 

Comment 18. In Section 4.2.3 the applicant has identified the applicable requirements of 

subpart IIII for each engine and noted the Tier rating of each class of engines. However, 

there is no supporting documentation included with the application. Please provide 

copies of these certificates. 

Attachment 2 of this response letter contains all available emission certification documents. 

Emission certifications are available for all but three engines aboard the Discoverer Americas

drill vessel. Statoil is waiting to receive emission certification documents for the two emergency 

air compressor engines (ACOMP), and will provide the certification data to EPA once we have 

received the data. 

At the time of the September 2012 application, Statoil was provided with information stating the 

engines aboard the Peyton Candies vessel were certified EPA Tier 2; however, Statoil recently 

determined the Peyton Candies OSV engines are 40 CFR 1043/MARPOL compliant but not 

certified to EPA Tier 2 standards. Under 40 CFR 55.7 the Administrator or the delegated 

agency may exempt a source from a control technology requirement if compliance with the 

control requirement is technically infeasible or will cause an unreasonable threat to health and 

safety. Engine-specific information for the emergency generator engine is provided below with 

additional information to request the 40 CFR 55.7 exemptions from the NSPS Subpart IIII 

emission limit requirements. 

Discoverer Americas Emergency Generator Engine (EGEN) 

The EGEN unit is a post-2007 non-fire pump emergency engine with a displacement greater 

than or equal to 10 L per cylinder. Therefore, the engine is subject to 40 CFR 60.4202(e)(1), 

which requires compliance with the emission standards in 40 CFR 94.8; specifically, this engine 

must comply with the following emission limits: NMHC+NOX = 9.8 g/kW-hr; CO = 5.0 g/kW-hr; 

and, PM = 0.50 g/kW-hr. To demonstrate compliance with the emission limits 40 CFR 

60.4211(c) requires the owner/operator to purchase a certified engine. Statoil received the 

available emission certification documents for the EGEN unit and determined the engine is not 

certified to Tier 2 engine standards. 

40 CFR 55.7 Exemption Request 

The emergency generator engine was originally sized to meet the required loads of emergency 

generation aboard the Discoverer Americas during its initial design process and as such the 

engine was installed to fit those needs. The NSPS subpart specifically requires the 

owner/operator to purchase a certified engine, which does not allow the engine manufacturer to 

revise the engine certification to Tier 2 levels if additional emission controls were added to the 

engine. 

Since a Tier 2 certified engine is the only compliance option available to meet the requirements 

of 40 CFR 60 Subpart IIII, a new engine would have to be purchased by the vessel owner. 
USEPA Region 4 20 December 7, 2012 

Under the criteria for exemption of a source from a control technology requirement specified at 

55.7(b)(4)(i), Statoil believes that the purchase of a new engine is considered technically 

infeasible. Therefore, Statoil requests exemption from the requirements of 40 CFR 60 Subpart 

IIII for the emergency generator engine. 

As documented in Table 18-1 below, the emergency engine potential to emit basis is below the 

Tier 2 emissions levels for all pollutants except for NOX +NMHC. Therefore Statoil is only 

proposing to offset NOX + NMHC emissions. 

Table 18-1 

Discoverer Americas EGEN Emission Offset Requirements 

Pollutant 

PTE Emissios 

Basis 

(g/kW-hr) 

EPA Tier 2 

Standard 

(g/kW-hr) 

Emission 

Offsets 

Required? 

NOX + NMHC 11.03 9.8 Yes 

CO a 0.26 5.0 No 

PM b 0.30 0.5 No 

Notes: 

a – Vendor supplied CO emissions data for the EGEN (0.26 g/kW-hr) are 

less than the Tier 2 emission limit (5.0 g/kW-hr); therefore, both 

proposed and Tier 2 emissions are calculated based on the vendor 

data. 

b – No vendor data are available for particulate matter emissions. Statoil 

based proposed emission calculations on available AP-42 emission 

factors for large diesel engines. The AP-42 PM emission factor (0.30 

g/kW-hr) is less than the Tier 2 emission limit (0.5 g/kW-hr).

In accordance with 40 CFR 55.7(b)(4)(ii), Statoil proposes a NOX + NMHC emission level 

substitute of 11.03 g/kW-hr in lieu of the 9.8 g/kW-hr standard required by NSPS Subpart IIII. 

Statoil has estimated the residual emissions resulting from the proposed emissions basis as 

compared to the Tier 2 level and the results are presented in Table 18-2. 

Statoil looks forward to working with the EPA during the permit review process to identify 

emission reductions, if required, of a sufficient quantity to offset the estimated residual 

emissions. All supporting calculations can be found in Attachment 4. 

Table 18-2 

Summary of Discoverer Americas EGEN Residual Emissions 

Emission Unit 

ID 

Proposed 

NOX + NMHC

(tpy) 

EPA Tier 2 

NOX + NMHC

(tpy) 

Residual 

Emissions 

(tpy) 

EGEN 1.16 1.03 0.13 

   
USEPA Region 4 21 December 7, 2012 

BACT Main Engine SCR Cost Analysis (Developer) 

Comment 19. Please provide documentation for the following information included in the 

cost analysis for installing SCR on the Developer to control NOx emissions from the 

main engines: Wartsila quotes for SCR equipment costs, freight costs, and Direct Annual 

Costs. 

Statoil is waiting on final Developer main engine SCR cost data from the vendor and will supply 

the data to EPA as soon as it is available. The cost analysis included in the application was 

based on a preliminary cost estimate provided by Wartsila and was not considered final at the 

time of submitting the application. 

Comment 20. Please provide the EPA with a revised, more detailed cost analysis for 

installing SCR on the main engines onboard the Developer. 

Statoil is waiting on final Developer main engine SCR cost data from the vendor and will supply 

the data to EPA as soon as it is available. The cost analysis included in the application was 

based on a preliminary cost estimate provided by Wartsila and was not considered final at the 

time of submitting the application. 

BACT Main Engine Replacement Cost Analysis (Discoverer Americas) 

Comment 21. The Discoverer Americas Main Engine Replacement discussion on pages 

5-23 and 5-24 estimates 100 days to replace all of the main engines. However, the 

discussion indicates that normal operation is using three engines with five on standby 

and replacement costs are based on eight main generator engines. In the identification of 

emissions units, the Discoverer Americas has only six main engines listed. Please clarify 

if the estimated 100 days needed to replace all of the main engines is for six or eight 

engines and provide an adjusted cost analysis and/or analysis summary to reconcile the 

table in Appendix D with the text in Section 5. 

Statoil confirms the Discoverer Americas has six main engines. The BACT section text 

describing eight main engines on pages 5-23 and 5-24 is an error. However, the conservative 

estimate of 100 days to replace the six main engines is accurate. The cost effectiveness for 

replacing one main engine with a Tier 2 engine remains at approximately $85,851/ton NOX

removed. Statoil does not believe that engine replacement is cost effective for the main 

generator engines on the Discoverer Americas. 

 
USEPA Region 4 22 December 7, 2012 

Part 71 Forms 

Comment 22. Although the text in Sections 3.2.8.3 and 3.3.9.3 correctly describes drilling 

mud as an insignificant activity (e.g., potential emissions of regulated air pollutants are 

less than two tons per year and hazardous air pollutants are less than 1000 pounds per 

year), the part 71 forms included in Appendix A do not list mud degassing as an 

insignificant activity for either operating scenario. Please submit the corrected Part 71 

forms classifying mud degassing as an insignificant activity. 

Revised Part 71 forms for the Developer are included as Attachment 3 of this response letter. 

Statoil has included mud degassing as an insignificant activity in the Part 71 forms. ENVIRON 

will provided EPA with updated Part 71 forms for the Discoverer Americas as soon as we 

receive the remaining supporting documentation and update emission estimates. 

We hope the responses provided herein as well as the supporting documentation attached has 

addressed your questions and request for additional information. As noted previously, we are 

working closely with Statoil, vessel owners, and vendors to gather additional information to 

address other items you have raised. We will provide additional information as soon as it is 

made available and we have incorporated into the permit application sections as appropriate. 

Consistent with the number of original application submittals, please find attached 2 paper 

copies and 8 electronic CD copies of the response. In addition, an electronic copy is being 

provided to the Federal Land Manager, U.S. Fish and Wildlife Service. Should you have further 

questions or need additional information, please feel free to contact me at (225) 408-2691 or via 

email at mcarbon@environcorp.com. 

Sincerely, 

Michael Carbon 

Principal, Air Sciences 

Enclosure 

cc: Don Evans, Statoil 

 Kjersti Seim, Statoil 

 Ms. Jill Webster 

 UNITED STATES DEPARTMENT OF THE INTERIOR 

 U.S. Fish and Wildlife Service 

 National Wildlife Refuge System 

 Branch of Air Quality 

 7333 W. Jefferson Ave., Suite 375 

 Lakewood, CO 80235-2017 
Attachment 1 

Support Vessel Emission Calculations 
Statoil

Eastern GOM OCS Air Permitting Project

Maersk Developer Emission Calculations

Support Vessel Engine Emissions CalculationsExample CalculationsEquipment Specifications

Vessel 

Function

Rating

(kW) Rating (hp)

% of 

Total hp 

per 

Vessel 

(%)

Manufcr. 

Year Model No. Serial No.

OSV Peyton Candies Main Engine #1 1,765 2,367 NA Caterpillar Jun-03 3512C SLM00141 -- -- OSV Peyton Candies Main Engine #2 1,765 2,367 NA Caterpillar Jun-03 3512C SLM00144 -- -- OSV Peyton Candies Main Engine #3 1,765 2,367 NA Caterpillar Jun-03 3512C SLM00138 -- -- OSV Peyton Candies Main Engine #4 1,765 2,367 NA Caterpillar Jun-03 3512C SLM00140 4.9 IMOOSV Peyton Candies Emergency Generator 269 361 NA Caterpillar Jan-08 C9 C9J00702 1.5 IMOCrewboat Sybil Graham Main Engine #1 1342 1,800 NA Cummins Jul-08 QSK50-DM 33174490 3.2 Tier IICrewboat Sybil Graham Main Engine #2 1342 1,800 NA Cummins Jul-08 QSK50-DM 33174489 3.2 Tier IICrewboat Sybil Graham Main Engine #3 1342 1,800 NA Cummins Jul-08 QSK50-DM 33174468 3.2 Tier IICrewboat Sybil Graham Main Engine #4 1342 1,800 NA Cummins Jul-08 QSK50-DM 33174513 3.2 Tier IICrewboat Sybil Graham Generator #1 93 125 NA Cummins Aug-08 6BTA5.9 46714098 1.0 Tier IICrewboat Sybil Graham Generator #2 93 125 NA Cummins Aug-08 6BTA5.9 46831783 1.0 Tier IICrewboat Sybil Graham Thruster #1 Engine 201 270 NA Cummins May-08 6CTA83-DM 73002398 1.4 Tier IICrewboat Sybil Graham Thruster #2 Engine 201 270 NA Cummins Nov-08 6CTA83-DM 46963999 1.4 Tier II

Operating Schedule

Vessel Function Hours per Year

OSV - Main Engine 2,570 Based on historical data review from statoil (max OSV usage per campaign day with 5% safety buffer).

OSV - EGEN 51 Based on emergency generator testing once per week for two hours.Crewboats 618 Based on historical data review from statoil (max Crew Boat usage per campaign day with 10% safety buffer).

Displacement per 

Cylinder (L)

Basis (within 25 miles of Drilling Location and one location per 180-day campaign)

Example Vessel Name Engine Description Manufacturer

Emissions are generated from the combustion of diesel fuel in engines associated with support vessels that will operate within 25 miles of the drilling rig. The support vessels include 1) crewboats and 2) offshore support vessels, which both transport personnel and supplies to and from the drilling rig. Annual emissions are calculated using the average power rating, length of the drilling campaign and emission factors, which are based on engine size and its applicable regulations. Criteria, Greenhouse Gas and Hazardous Air Pollutants 

emission factors for each engine and pollutant are referenced below. Additionally, example calculations are provided below.

			


		 
  ∙  =  ∙ 42			


	 
  ∙  × 
	 453.6	
 
 × 
	 1.341	 ∙   ∙ 	$	%


	&




' = ()	*	&	  × 	* % × &	,




'

× $	%


		 
  ∙  × 
	 1	
 453.6	
 × 
	 1	 2000	


	./	 (	#1 	$	%


	&




'

= 1765  × 100 % ×

3059	


'

× 7.20	
  ∙  × 1	
 453.6	
 × 1	 2000	
 = 42.85 
 '

()	


	&	   = ()	*	&	  × ()	


	 
  ∙  × 
	 1	 453.6	
*4
	 5	#1 ()	67	


	&   = 93  × 0.003973	
  ∙  × 1	 453.6	
 = 0.000815  

Support Vessels Page 1 of 3 
Statoil

Eastern GOM OCS Air Permitting Project

Maersk Developer Emission Calculations

Emission Calculation (Annual Basis for a 180-day Campaign within 25 miles of Drilling Location)Criteria Air Pollutant & Greenhouse Gas (CO2e) Emissions Total VOC NOX CO SO2 PM PM10 PM2.5 

Maximum 

Power 

Rating

Percent 

Power

Adjusted 

Power 

Rating

Run Time Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate 

(kW) (%) (kW) (hr/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) 

OSV (Main #1) 1,765 100% 1,765 2,570 0.43 (3) 2.14 10.90 (5) 54.49 3.35 (3) 16.73 0.01 (2) 0.03 0.30 (3) 1.48 0.24 (3) 1.22 0.24 (3) 1.18 OSV (Main #2) 1,765 100% 1,765 2,570 0.43 (3) 2.14 10.90 (5) 54.49 3.35 (3) 16.73 0.01 (2) 0.03 0.30 (3) 1.48 0.24 (3) 1.22 0.24 (3) 1.18 OSV (Main #3) 1,765 0% 0 2,570 0.43 (3) 0.00 10.90 (5) 0.00 3.35 (3) 0.00 0.01 (2) 0.00 0.30 (3) 0.00 0.24 (3) 0.00 0.24 (3) 0.00 

OSV (Main #4) 1,765 0% 0 2,570 0.43 (3) 0.00 10.90 (5) 0.00 3.35 (3) 0.00 0.01 (2) 0.00 0.30 (3) 0.00 0.24 (3) 0.00 0.24 (3) 0.00 

OSV (Emer. Gen.) 269 100% 269 51 1.53 (3) 0.02 10.42 (5) 0.16 4.06 (3) 0.06 0.01 (2) 0.00010 1.63 (3) 0.02 1.34 (3) 0.02 1.30 (3) 0.02 

Total Emissions 4.31 109.15 33.52 0.07 2.99 2.46 2.39 

Maximum 

Power 

Rating

Percent 

Power

Adjusted 

Power 

Rating

Run Time Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate 

(kW) (%) (kW) (hr/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) 

Crewboats (Main #1) 1,342 100% 1,342 618 0.43 (3) 0.39 7.20 (1) 6.58 3.35 (3) 3.06 0.01 (2) 0.01 0.20 (1) 0.18 0.16 (1) 0.15 0.16 (1) 0.15 

Crewboats (Main #2) 1,342 100% 1,342 618 0.43 (3) 0.39 7.20 (1) 6.58 3.35 (3) 3.06 0.01 (2) 0.01 0.20 (1) 0.18 0.16 (1) 0.15 0.16 (1) 0.15 

Crewboats (Main #3) 1,342 100% 1,342 618 0.43 (3) 0.39 7.20 (1) 6.58 3.35 (3) 3.06 0.01 (2) 0.01 0.20 (1) 0.18 0.16 (1) 0.15 0.16 (1) 0.15 

Crewboats (Main #4) 1,342 100% 1,342 618 0.43 (3) 0.39 7.20 (1) 6.58 3.35 (3) 3.06 0.01 (2) 0.01 0.20 (1) 0.18 0.16 (1) 0.15 0.16 (1) 0.15 

Crewboats (Generator #1) 93 100% 93 618 1.53 (3) 0.10 7.20 (1) 0.46 4.06 (3) 0.26 0.01 (2) 0.00 0.30 (1) 0.02 0.25 (1) 0.02 0.24 (1) 0.02 

Crewboats (Generator #2) 93 100% 93 618 1.53 (3) 0.10 7.20 (1) 0.46 4.06 (3) 0.26 0.01 (2) 0.00 0.30 (1) 0.02 0.25 (1) 0.02 0.24 (1) 0.02 Crewboats (Thruster #1) 201 100% 201 618 1.53 (3) 0.21 7.20 (1) 0.99 4.06 (3) 0.56 0.01 (2) 0.00 0.20 (1) 0.03 0.16 (1) 0.02 0.16 (1) 0.02 

Crewboats (Thruster #2) 201 100% 201 618 1.53 (3) 0.21 7.20 (1) 0.99 4.06 (3) 0.56 0.01 (2) 0.00 0.20 (1) 0.03 0.16 (1) 0.02 0.16 (1) 0.02 

Total Emissions 2.18 29.21 13.86 0.03 0.82 0.68 0.66 

Hazardous Air Pollutant (HAP) Emissions Benzene Toluene Xylenes Formaldehyde Acetaldehyde Acrolein Naphthalene 

Maximum 

Power 

Rating

Percent 

Power

Adjusted 

Power 

Rating

Run Time Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate 

(kW) (%) (kW) (hr/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) 

OSV (Main #1) 1,765 100% 1,765 2,570 3.30E-03 (3) 1.65E-02 1.20E-03 (3) 5.98E-03 8.22E-04 (3) 4.11E-03 3.36E-04 (3) 1.68E-03 1.07E-04 (3) 5.37E-04 3.36E-05 (3) 1.68E-04 5.54E-04 (3) 2.77E-03 OSV (Main #2) 1,765 100% 1,765 2,570 3.30E-03 (3) 1.65E-02 1.20E-03 (3) 5.98E-03 8.22E-04 (3) 4.11E-03 3.36E-04 (3) 1.68E-03 1.07E-04 (3) 5.37E-04 3.36E-05 (3) 1.68E-04 5.54E-04 (3) 2.77E-03 OSV (Main #3) 1,765 0% 0 2,570 3.30E-03 (3) 0.00E+00 1.20E-03 (3) 0.00E+00 8.22E-04 (3) 0.00E+00 3.36E-04 (3) 0.00E+00 1.07E-04 (3) 0.00E+00 3.36E-05 (3) 0.00E+00 5.54E-04 (3) 0.00E+00 

OSV (Main #4) 1,765 0% 0 2,570 3.30E-03 (3) 0.00E+00 1.20E-03 (3) 0.00E+00 8.22E-04 (3) 0.00E+00 3.36E-04 (3) 0.00E+00 1.07E-04 (3) 0.00E+00 3.36E-05 (3) 0.00E+00 5.54E-04 (3) 0.00E+00 

OSV (Emer. Gen.) 269 100% 269 51 3.97E-03 (3) 6.06E-05 1.74E-03 (3) 2.66E-05 1.21E-03 (3) 1.85E-05 5.02E-03 (3) 7.66E-05 3.27E-03 (3) 4.98E-05 3.94E-04 (3) 6.01E-06 3.61E-04 (3) 5.51E-06 Total Emissions 0.03 0.01 0.01 0.00 0.00 0.00 0.01 

Maximum 

Power 

Rating

Percent 

Power

Adjusted 

Power 

Rating

Run Time Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate Emission Rate 

(kW) (%) (kW) (hr/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) 

Crewboats (Main #1) 1,342 100% 1,342 618 3.30E-03 (3) 3.02E-03 1.20E-03 (3) 1.09E-03 8.22E-04 (3) 7.51E-04 3.36E-04 (3) 3.07E-04 1.07E-04 (3) 9.81E-05 3.36E-05 (3) 3.07E-05 5.54E-04 (3) 5.06E-04 

Crewboats (Main #2) 1,342 100% 1,342 618 3.30E-03 (3) 3.02E-03 1.20E-03 (3) 1.09E-03 8.22E-04 (3) 7.51E-04 3.36E-04 (3) 3.07E-04 1.07E-04 (3) 9.81E-05 3.36E-05 (3) 3.07E-05 5.54E-04 (3) 5.06E-04 

Crewboats (Main #3) 1,342 100% 93 618 3.30E-03 (3) 2.09E-04 1.20E-03 (3) 7.58E-05 8.22E-04 (3) 5.21E-05 3.36E-04 (3) 2.13E-05 1.07E-04 (3) 6.80E-06 3.36E-05 (3) 2.13E-06 5.54E-04 (3) 3.51E-05 

Crewboats (Main #4) 1,342 100% 93 618 3.30E-03 (3) 2.09E-04 1.20E-03 (3) 7.58E-05 8.22E-04 (3) 5.21E-05 3.36E-04 (3) 2.13E-05 1.07E-04 (3) 6.80E-06 3.36E-05 (3) 2.13E-06 5.54E-04 (3) 3.51E-05 Crewboats (Generator #1) 93 100% 1,342 618 3.97E-03 (3) 3.63E-03 1.74E-03 (3) 1.59E-03 1.21E-03 (3) 1.11E-03 5.02E-03 (3) 4.59E-03 3.27E-03 (3) 2.99E-03 3.94E-04 (3) 3.60E-04 3.61E-04 (3) 3.30E-04 

Crewboats (Generator #2) 93 100% 1,342 618 3.97E-03 (3) 3.63E-03 1.74E-03 (3) 1.59E-03 1.21E-03 (3) 1.11E-03 5.02E-03 (3) 4.59E-03 3.27E-03 (3) 2.99E-03 3.94E-04 (3) 3.60E-04 3.61E-04 (3) 3.30E-04 

Crewboats (Thruster #1) 201 100% 93 618 3.97E-03 (3) 2.52E-04 1.74E-03 (3) 1.10E-04 1.21E-03 (3) 7.69E-05 5.02E-03 (3) 3.18E-04 3.27E-03 (3) 2.07E-04 3.94E-04 (3) 2.50E-05 3.61E-04 (3) 2.29E-05 Crewboats (Thruster #2) 201 100% 93 618 3.97E-03 (3) 2.52E-04 1.74E-03 (3) 1.10E-04 1.21E-03 (3) 7.69E-05 5.02E-03 (3) 3.18E-04 3.27E-03 (3) 2.07E-04 3.94E-04 (3) 2.50E-05 3.61E-04 (3) 2.29E-05 Total Emissions 1.42E-02 5.74E-03 3.98E-03 1.05E-02 6.59E-03 8.36E-04 1.79E-03 

CREW

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor Emissions Unit ID Vessel Function

Emission 

Factor

OSV

Vessel Function

Vessel Function

OSV

Emissions Unit ID

Emissions Unit ID

CREW

Emissions Unit ID Vessel Function

Support Vessels Page 2 of 3 
Statoil

Eastern GOM OCS Air Permitting Project

Maersk Developer Emission Calculations

Emission Calculation (Maximum Hourly Basis)Criteria Air Pollutant & Greenhouse Gas (CO2e) Emissions Total VOC NOX CO SO2 PM PM10 PM2.5 

Maximum 

Power 

Rating

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

(kW) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) 

(Typical Representation) OSV (Main #1) 1,765 0.43 (3) 1.67 10.90 (5) 42.41 3.35 (3) 13.02 0.01 (2) 0.03 0.30 (3) 1.15 0.24 (3) 0.95 0.24 (3) 0.92 

(Typical Representation) OSV (Main #2) 1,765 0.43 (3) 1.67 10.90 (5) 42.41 3.35 (3) 13.02 0.01 (2) 0.03 0.30 (3) 1.15 0.24 (3) 0.95 0.24 (3) 0.92 

(Typical Representation) OSV (Main #3) 1,765 0.43 (3) 1.67 10.90 (5) 42.41 3.35 (3) 13.02 0.01 (2) 0.03 0.30 (3) 1.15 0.24 (3) 0.95 0.24 (3) 0.92 

(Typical Representation) OSV (Main #4) 1,765 0.43 (3) 1.67 10.90 (5) 42.41 3.35 (3) 13.02 0.01 (2) 0.03 0.30 (3) 1.15 0.24 (3) 0.95 0.24 (3) 0.92 

(Typical Representation) OSV (Emer. Gen.) 269 1.53 (3) 0.91 10.42 (5) 6.18 4.06 (3) 2.41 0.01 (2) 0.00 1.63 (3) 0.97 1.34 (3) 0.79 1.30 (3) 0.77 

Total Emissions 7.58 175.81 54.48 0.11 5.58 4.59 4.45 (Typical Representation) Crewboats (Main #1) 1,342 0.43 (3) 1.27 7.20 (1) 21.30 3.35 (3) 9.90 0.01 (2) 0.02 0.20 (1) 0.59 0.16 (1) 0.49 0.16 (1) 0.47 

(Typical Representation) Crewboats (Main #2) 1,342 0.43 (3) 1.27 7.20 (1) 21.30 3.35 (3) 9.90 0.01 (2) 0.02 0.20 (1) 0.59 0.16 (1) 0.49 0.16 (1) 0.47 

(Typical Representation) Crewboats (Main #3) 1,342 0.43 (3) 1.27 7.20 (1) 21.30 3.35 (3) 9.90 0.01 (2) 0.02 0.20 (1) 0.59 0.16 (1) 0.49 0.16 (1) 0.47 

(Typical Representation) Crewboats (Main #4) 1,342 0.43 (3) 1.27 7.20 (1) 21.30 3.35 (3) 9.90 0.01 (2) 0.02 0.20 (1) 0.59 0.16 (1) 0.49 0.16 (1) 0.47 

(Typical Representation) Crewboats (Generator #1) 93 1.53 (3) 0.31 7.20 (1) 1.48 4.06 (3) 0.83 0.01 (2) 0.00 0.30 (1) 0.06 0.25 (1) 0.05 0.24 (1) 0.05 

(Typical Representation) Crewboats (Generator #2) 93 1.53 (3) 0.31 7.20 (1) 1.48 4.06 (3) 0.83 0.01 (2) 0.00 0.30 (1) 0.06 0.25 (1) 0.05 0.24 (1) 0.05 

(Typical Representation) Crewboats (Thruster #1) 201 1.53 (3) 0.68 7.20 (1) 3.19 4.06 (3) 1.80 0.01 (2) 0.00 0.20 (1) 0.09 0.16 (1) 0.07 0.16 (1) 0.07 

(Typical Representation) Crewboats (Thruster #2) 201 1.53 (3) 0.68 7.20 (1) 3.19 4.06 (3) 1.80 0.01 (2) 0.00 0.20 (1) 0.09 0.16 (1) 0.07 0.16 (1) 0.07 

Total Emissions 7.06 94.54 44.86 0.09 2.67 2.19 2.13 

Emission Calculation (Maximum Hourly Basis)Hazardous Air Pollutant (HAP) Emissions Benzene Toluene Xylenes Formaldehyde Acetaldehyde Acrolein Naphthalene 

Maximum 

Power 

Rating

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

Emission 

Rate

(kW) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) 

(Typical Representation) OSV (Main #1) 1,765 3.30E-03 (3) 1.29E-02 1.20E-03 (3) 4.66E-03 8.22E-04 (3) 3.20E-03 3.36E-04 (3) 1.31E-03 1.07E-04 (3) 4.18E-04 3.36E-05 (3) 1.31E-04 5.54E-04 (3) 2.15E-03 

(Typical Representation) OSV (Main #2) 1,765 3.30E-03 (3) 1.29E-02 1.20E-03 (3) 4.66E-03 8.22E-04 (3) 3.20E-03 3.36E-04 (3) 1.31E-03 1.07E-04 (3) 4.18E-04 3.36E-05 (3) 1.31E-04 5.54E-04 (3) 2.15E-03 

(Typical Representation) OSV (Main #3) 1,765 3.30E-03 (3) 1.29E-02 1.20E-03 (3) 4.66E-03 8.22E-04 (3) 3.20E-03 3.36E-04 (3) 1.31E-03 1.07E-04 (3) 4.18E-04 3.36E-05 (3) 1.31E-04 5.54E-04 (3) 2.15E-03 

(Typical Representation) OSV (Main #4) 1,765 3.30E-03 (3) 1.29E-02 1.20E-03 (3) 4.66E-03 8.22E-04 (3) 3.20E-03 3.36E-04 (3) 1.31E-03 1.07E-04 (3) 4.18E-04 3.36E-05 (3) 1.31E-04 5.54E-04 (3) 2.15E-03 

(Typical Representation) OSV (Emer. Gen.) 269 3.97E-03 (3) 2.36E-03 1.74E-03 (3) 1.03E-03 1.21E-03 (3) 7.20E-04 5.02E-03 (3) 2.98E-03 3.27E-03 (3) 1.94E-03 3.94E-04 (3) 2.34E-04 3.61E-04 (3) 2.14E-04 

Total Emissions 5.38E-02 1.97E-02 1.35E-02 8.21E-03 3.61E-03 7.56E-04 8.83E-03 

(Typical Representation) Crewboats (Main #1) 1,342 3.30E-03 (3) 9.78E-03 1.20E-03 (3) 3.54E-03 8.22E-04 (3) 2.43E-03 3.36E-04 (3) 9.94E-04 1.07E-04 (3) 3.17E-04 3.36E-05 (3) 9.93E-05 5.54E-04 (3) 1.64E-03 (Typical Representation) Crewboats (Main #2) 1,342 3.30E-03 (3) 9.78E-03 1.20E-03 (3) 3.54E-03 8.22E-04 (3) 2.43E-03 3.36E-04 (3) 9.94E-04 1.07E-04 (3) 3.17E-04 3.36E-05 (3) 9.93E-05 5.54E-04 (3) 1.64E-03 (Typical Representation) Crewboats (Main #3) 1,342 3.30E-03 (3) 9.78E-03 1.20E-03 (3) 3.54E-03 8.22E-04 (3) 2.43E-03 3.36E-04 (3) 9.94E-04 1.07E-04 (3) 3.17E-04 3.36E-05 (3) 9.93E-05 5.54E-04 (3) 1.64E-03 (Typical Representation) Crewboats (Main #4) 1,342 3.30E-03 (3) 9.78E-03 1.20E-03 (3) 3.54E-03 8.22E-04 (3) 2.43E-03 3.36E-04 (3) 9.94E-04 1.07E-04 (3) 3.17E-04 3.36E-05 (3) 9.93E-05 5.54E-04 (3) 1.64E-03 (Typical Representation) Crewboats (Generator #1) 93 3.97E-03 (3) 8.15E-04 1.74E-03 (3) 3.57E-04 1.21E-03 (3) 2.49E-04 5.02E-03 (3) 1.03E-03 3.27E-03 (3) 6.70E-04 3.94E-04 (3) 8.08E-05 3.61E-04 (3) 7.40E-05 (Typical Representation) Crewboats (Generator #2) 93 3.97E-03 (3) 8.15E-04 1.74E-03 (3) 3.57E-04 1.21E-03 (3) 2.49E-04 5.02E-03 (3) 1.03E-03 3.27E-03 (3) 6.70E-04 3.94E-04 (3) 8.08E-05 3.61E-04 (3) 7.40E-05 (Typical Representation) Crewboats (Thruster #1) 201 3.97E-03 (3) 1.76E-03 1.74E-03 (3) 7.72E-04 1.21E-03 (3) 5.38E-04 5.02E-03 (3) 2.23E-03 3.27E-03 (3) 1.45E-03 3.94E-04 (3) 1.75E-04 3.61E-04 (3) 1.60E-04 (Typical Representation) Crewboats (Thruster #2) 201 3.97E-03 (3) 1.76E-03 1.74E-03 (3) 7.72E-04 1.21E-03 (3) 5.38E-04 5.02E-03 (3) 2.23E-03 3.27E-03 (3) 1.45E-03 3.94E-04 (3) 1.75E-04 3.61E-04 (3) 1.60E-04 Total Emissions 4.43E-02 1.64E-02 1.13E-02 1.05E-02 5.50E-03 9.08E-04 7.02E-03 

Emission Factor References1. 40 CFR 94, Tier II Certification level.2. Calculation - Based on weight percent sulfur in fuel and assumes 100% oxidation to SO2.3. AP-42 - Section 3.3 for large engines and Section 3.4 for small engines.4. EPA - CO2, CH4, and N2O emission factors from the Mandatory Reporting Rule (40 CFR 98) for general combustion (Table C-1 and C-2).

5. IMO Tier I Compliant (Regulation 13 of Marpol Annex VI and EPA 40 CFR 1043).

6. EPA publication EPA-454/R-98-006, "Locating and Estimating Air Emissions from Sources of Lead and Lead Compounds," May 1998.

Conversions

453.6 g/lb, conversion factor

2000 lb/ton

1.341 hp/kW

7.1 lb/gal, density of diesel (see "Fuel Data" worksheet)

OSV

CREW

Emission 

Factor

Emission 

Factor

OSV

Vessel Name Engine Description

CREW

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor Emissions Unit ID

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor

Emission 

Factor Emissions Unit ID Vessel Name Engine Description

Support Vessels Page 3 of 3 
Attachment 2 

Engine Emission Certifications 
Discoverer Americas 

Main Engine – IMO Emission Certification Document 

 
DET NORSKE VERITAS

ENGINE INTERNATIONAL AIR

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Speed, ᄁTest Generating Engine GenerEltingeffciency, Engine Mean Fuel Fuelnow, Max. me date rack atcombustion effective power, sped %beginning Data p。kglh po씨Ie sition, 眈VrPm pressure, 「,pressure, ofmmWVmode % barbar(A-bank) -2008.110:0089. 04. 15099. 599 672 720 2.281521 -2008.110:0094. 367. 04. 30115떼9 595 680 720 6.942822 2008,10:10097. 637. 04. 3260 3360 10231720 2*0328.40 2008.9:1005097.104. 491 5040 30. 1720 8.7ᅣ57288794 -2008.9:11212. 0097. 3004. 6567 6720 24. 387207228.900 Max Turbochafger Turb0Charger Air Reference AiH.ᆬH·H■L.Fuel Fuel Lu以 Lub. Exhaustgastemp. T「『preSS· TTco。 Ttemp. cooling cooling coo- c00ling cooling oi- oi- oiltempe oi- c。mbustIOn temperature ―ing pressure pressure pressure ingwatertemp. before beforecylinder, air water vvater water wale sPeed, temp. speed, 『atUrebeforeengine, cyrnder, cylinder, 「「before before before pressure, temp. press. temp. press. 。before achcy- rPm rPm(x(x눼閔er before before afferengine, engine, engine, tUrb。 before before °C衿bar cyl bar engine, inde 1OO0) 1000) (A-B air charger, (Tsc繃) air (B- bank) engine, engine, engine, 「.cooler. bar ba°C(A- (B- c。bank) 「°Coler. 낌bank) bank) .°Cbar °CLbar °Cba°C「--- 288. 67. 67. 0.9,4.3.25.15757578122661038.6241649 - 87.8 0.113334.3.2.5.15454440388142667.43243 - 13132. 20 1.3.2541452036805268..4915 - 172.425 2.43.25149303874862568.904021846 - 202.128. 28. 3.3.25.415353203866825.’8.764056

Exhaust Exhaust ᄐxhauatgas gas temp. back Pressure, before 밟始rturbine, turbine, mmHZO°Cb 331 3158 - 261 3320 321424 331 80.9 - 326.437 299 2004 367.483 30408

D. 1 STx EngineC。., Ltd
D. Emission testsheatforpElrentengine

Enginetype

pal。ntengine

14,132140

EngineN㬐

Parentengine

SB14V32- 6여 9

POWer kVV

6720

Speed rPm

720

N以ofCyl.

14

BOre mm

320

stroke mm

400

C。mp Ratj。

14 5

FUel

150- F*DMX

Hu kcaljkg

10260

Densitygj』

0.8317

Hydrogsn%

11 .90

Carb。n %

87. 39

S미phur %

0.030

Nitrogen%

0.06

Oxygen %

O

M。L。Speed, Tim Test Ambient Pressure, Temperᄐ Relative Absolute add。date ,at%%beginning Iture, humidify. Data humidity, bar.abs °C ofRHglkg m。% de -2008.10:115001O04. 502250. .여28’833 2008,110:2540004. 130.225101328.61 2008·10:150300104. 10.20. 52 0128396 2008.9:175000104. 20. 53 .0128436 -2008.9:100130104..155. 019■2837

7

8 lsss

8.10

8

0

Air Emission UncO Exhaust NOx C n。concnetration 『reCted CDncentration w (GAIRW) 위ow Oataspe。 (GEXHW) ,1祉lel (dkglh (dry) 『y)c。.,,ppm kg/ nsumPtion, ppmh g/kwh 110933. 0734 296. 602..4759 1153234 4956 1046. 218■628 25926. 26564. 969. 189. 8574 3918210. 182· 93128..O286 48319·7107. 1942. 80489 一

COZ 02THC Drylwet NOxconcentration conCentration conCentration Humi. correoti。 &Temp.n(dfaCtor, (dry) 『y) (wet) correoti。 ,%,,%<ppmCI KVvEXH) n feCtor 0.202. 19586708 3.535859 0.0.1222. 9473 9673 58. 5.3145659 0.1175떼8 .948259 27. 5.3.14741 0.11.9490581 23. 5.3’14.016778 0.101 9댑165 34. 520.40.96NOx NOx CᄋCOZ 02 (15% mass mass mas massnow, "ow, 09, 치ow, now,glh PPm glh glh 以h 161774152 640. 971 11700 1896 211133371 228 75070 842.8208 3749088 1955371 771667 16925.1 2825755 5608799 52598 761850.4 3751587 667165723. 1542 1134209

ll0ea

NOx Cᄋ$sPeC떼繭c, peci倆c, g/glkwh kVVh 14.1.4677 1130.636.8949 12237 0.1 .0620 12100..445217 2352 9.06923

一

02THC Cycle speci朽c, speci柄c, DZ ᅡiox glkVVh g/sp。 kVVhcific,glk너Ih 111, 2640 .58119 0.1675 29 974 IMO Umit 0.1582 666 116= 12.0071’427 561 113 g/’kVVh 0.558 993 350

D- 2 STX EngineC。.LTd,
E. Test Cell information

Densify Fuel F쵱Iel typ prope ’ 『fls: MGO0*8317 (equivalentto150- g/nlrF-@DMA15°CorFuel Carbon DMX elementa. grade),Fuel analysis name 87.:Lowsulforoiesel 39 % maSS

3.14

S미phur Hydrogen Nitrogen ᄋLHv/ Xygen Hu 110.01260 O1.030 ’06 9 %% kCElllkg maSS maSS

Manufacture 妙...

(lyl

d의’e)

MeasUrement

range

Analyser NOx Analyse「 HOriba cLA-150 (cL미- O -2000 ppm Span1930gas c。ppm Calibration nc Deviation 1.6 %

CO Analyse「 HOriba AIA-12O (NDIR)

COZ 02 Analyser Analyse「 HOriba AIA-120(NDIR) 0O-O-1000 -300 10 %ppm 9.956 29895 ppm % -0.*0.586 %

FPA*120<PM미

THC Analyser HOriba FMA→126D (HFID. 0 500 ppmCI 24. 477.970 ppmCI % -11..17 %

PO새I6r FUel 치OW YOKOKAVVA HIOKI CAS 써rr23o 3403 0-O99999 10000 rPm kw 1 60 rpm %

Air nOW CalCujation based On NOx TeChnical 0-1000COdekgf O %

Appendix6.MethodZ,Universal,Carbonloxygenbalancemethod

Exhaust T。Ambsent Charge CO이ant ᄐxhaust mper:aiᅢItllre gas airow「 DANTHERM TESTO CMRFOSS TEsᅮ 50803이8 K-Pt1TYPE O00 恥25- -50-0O10--200 8 12060 b°C七°C 土소士0..1.65l b컹b

r

LUbricant FUel DANFOSS Pt1 000 -50 -200 b 소소0.1.53 °C勿Ambient Ambient PreSSUre Charge Humidjfy Exhau$ Diameteraitair air pipe 「 OMᄐTESTᄋ TESTᄐ GADYNE PXM21 TESᅮ TESTO Pt1여o 09-OO6GI 516251 -30。 -50。--0120。 2어10。 - 6 mba삐 bar %七 - : / 穫 -소*소0.土0.1.040.862mbar bar %°CInsulation Probe SamPleing Remark IOcation h。se jength ZSamPling m afferturbocharger 16m from gastemperature samPling (26nOprobe m:l祉om min. topre- exhaust 70°Csampler atal- gasloads exit)

E- 1 ST)( E『lgine Co..!-t.J
Discoverer Americas 

Emergency Generator Engine – IMO Emission Certification Document 

 
DET NORSKE VERITAS

ENGINE INTERNATIONAL AIR

POLLUTION PREVENTION CERTIFICATE

ThisCe 『ti柄cate shallbe supPlemented by

a Record ofC。nst『ucti。 n,a TechnlcaIFileand Means ofVe 「市cation

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SB7L27· 5835

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ElAPP- G- 0479·001 1

THIS 15 TO CERTIFY

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Page 1 ofZ
DET NORSKE VERITAS

ReCOrd no :

티APP■479- " -A

Date of ]SSUe;

2008- 07.08

SUPPLEMENT TO ENGINE

1》IJTERNATIONAL AIR POLLUTION

PREVENTION CERTIFICATE

(ElAPP CERᄁFICATE)

RECORD OF CONSTRUCᄁON, TECHNICAL FILE

AND MᄐANS OF VERIFICAᄁ ON

InrespectotthePr。vlsj。 nsofAnnexvlofthelntematlonaI C。nventi。 nforthePreventlon ofPOI-ufIOnl누Omships.1973,asm。di石ed bythe

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enginethrough。 ut詮51祗eandshallbe available。nb。ardtheshipat히Itime’

IfthelanguageoftheorlglnalRec0rdjsneitherEngllshnorFrench,thete났ShalllncIUdeatranslatlonlnt。 。ne ofthesejanguages

Unlessothen’Iiseatated,regUIatrons menti。 nedinthisRecO『drefertoregulati。 ns 。fAnnexVI。ftheC。nventj。 n andthe

requirementsforan engine’s technical세eandmeans ofverincati。 ns referfomandato『yreqVirementsfrOmtheNOx TechnlcaIC。de

Particularsofthe engine

I Name andaddressofmanUfa戚urer STx Enginec。,니업·

80,Seongsan·d。ng,Changw。 n Gye。ngsangnam-d。,641-315 KOrea

Z PlaCeofenglnebu"d.. . . . . .. . . As above

3 Dateofenginebu∥d .. . .. . . . . . .. FebrUary2008

4 Placeofpre-cert兩cati。 nsurvey. . . .. . . . . .. As ab。ve

S DateofPre《erti柄cat, 。nsurvey . . . . . . . ... 2008-02-2,

6 Englnetypeandm。d히number . . . → . 7L27I38

7 En대nesenaInumber . .... .. . . .... .... . SB7L27-5835

s lfaPPlicable, theenglne lsaparentengine□ 。ramemberengine며ofthefollowi

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I n< 려」

10 RatedpowerlkV믹and speed【「pm]. . .. . .

11 Englne approvalnumber .. . . . .. . .. .. . . .

12 Specl「catlons ofthetestfuel .. . .." .. . . .. . →.

13 NOx-reduangdevlcedesignatedapprovalnumbe「(ifjnstalled)

14 ApPlicableNOx emissi。 nlimitlglkwh](regUlation 13 ofAnnexVI)

15 ᄐnglne ’s actUalNᄋxemlssl。 nvalue.cycleD2.【뺘Wh】. .. 6

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2008· 07- 08

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alwaysacc。mpany an enginethrough。 ut체slifeandalwaysbe available。n b。arda shIP

Specificationfo『theon-b。ardNOx verincationprQcedurefortheenginepᄐlrElmete『survey

On- boa『dNOx venncatlonproceduresident兩cation/ approvalnumber

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ElAPP-G- 0479- 001 1

2008- 07- 08

ᅮhe specj듀catlons fo「the。n-b。ard NOx verification procedures.as

essentialpa’toftheEl^PP Certl「cate andmustal,vaysaCcompany

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THISlsTO CERᄁFY thatthlsRec0rdlscorrectina1IrespeCts:

lssued at n, l。

req내red by Ch 6 ofthe NOx TechnlcaIC。de, arean

an enginethrough。 utitsIifeand always be available

1 2 ’J

갉.〔넌 蝦

\熬;괘돌 *쯧:{r

2008-07■08 (date)

ᄐ911Alling

齬닒

Head Of seCtion

iN히什

DET NoRsKE vERITAs^$.ventasvelenl .No-1322ᅢ하ik,N0嶼y.Tel+47 67579900,Fa찌+47 67579911.0rg거。N0 945748931”앉A니硼wdnvcom

Form N。:ElAPP IOla Issu驪DeCemberZO07 Page Z ofZ
D.Emissi。 n TestSheet forParentengine

ᄐnglnefype

(Parentenglne)

6L27j38

탭毁帛以nog ’.ne)

SB6L27471 9

P。wer kw

1980

Speed rpm

720

N㬐ofcyl

6

B。re mm

270

Stroke mm

380

C。mp Ratlo

15 9

FUel

DMC

Hu kcallkg

101 22 0

Densifykglm3

876 3

Hydrogen%

12.00

Carbon %

87.44

SUlphur%

0 19

Nitrogen%

0.05

Oxygen%

O

ᄁMOde L。Speed. Test Engine Generating Generating Engine Engine Mean Fuel TrboCharger Air Air Fuel MaXjmum ReferenCe C。C。CoolIng CoOIing C。Fue- Fuel Lb. Lub. Exhaust Exhaust Exhaust Exhaust me「adoling Oling o temp. press. date rack now, 011 011 oi- 011 oiᅵ 011 at.effective %%p이〃 speed, beginning temperatUre pre$ temperature pressure pressure pressure Dat: water water water water gas gas gas gas before position, kglh before combustion airtemp power, effciency, er, I$temP. temp. temp back ure SPeed. temp femp. temp. pre$ pressure kwrpm pressure, comPressor, cylinder. cylinder, before before ofPressure, kwmmsure each before after before bore before after befoe before mode rPm %Pressure, (xbefore before 柄11er, T/engine, engine, turbine. cybar °Cengine, C.bar turbine, "nde Cyl. aiengine, engine, engine. 1000) mmHZO bar 『°Cbar (Tsc coOIer, engine, c。『.babar °Cbar oIer, °C’C「楸. °C「°C°C°Cbar °Cba「 2006-1111100:2501O87. 60 0.150720 11231 289 264 2.63.45-17298674O206939174751O1.1067582912 2006-110:2520001111 5594. 18O14659 720 271 362 316.5.7325.-1924O404075621691.036970212 2006-110:5O30001- 13095. 12 983194990 72 2 41303 12.4..351374227576688O39112.960024208 2006-110:75400285. 0105196. 3228 12.42985 720 3143280 19.43.2541-754439767765111.2008O759612 2006-9:1 50020382. 0196. 25 393. 2190380 72 206 353 481 29250 4.4.3.255.1-4697397879611.3080729612

D- 1

ST× Englne Co., Ltd

7헨빤執쨍渤"
D.Emissi。 n Test$heatforParentengine

謐鯖襤e)

6L27138

謗「騙빎。g.ne)

SB6L27- 4져 9

POwe 『kw

1980

Speedmm

720

N以Ofcyl

6

BOre mm

270

stroke mm

380

C。mp RatiO

15 9

Fuel

DMC

Hu kcallkg

1여22 0

Densltykglm魯

876. 3

Hydrogen%

12.00

Ca 「bon%

87.44

Sulphur%

0 19

Nitrogen%

0.05

oxygen%

O

Time ᅮAmbient Absolute MOde Load Speed, Pressu Tempe Rlative EmiSSIOn UnC0rreCted ᄐAiNOx C02 02THC ᅮTHC Drylwet NOx NOx NOx CZ 02NOx CC02 02-MOest xhaust HC「위ow concentration (15% mass SpeCi石c, concnelration mass sped柄c, date concentration concentration mass speci柄c, DZatconcentration Humi mass speci specll泂c, ,%(e, 『ature, %begllnnlng (G시RV꺄. correCtion humidity. 위ow Cycle humidity. 위ow. Data ᅦbaOta 09, 「c. ·&ᅦow, n。ow. glkwh 이쟎, 「abs Temp speCfuel glkwh (Gᄐ w.glkwh °Cg/lkwh ’hNOx ppm g/kV닝h ’hg/lh XHVV) h(d(dry) 。RHkg/ hglkg fador. (dry) (dry) f『Y) (wet) correCti。 speci柄c. hm。%.c。,.%de,ppm kg/ .nsumPtion, %ppm ppmCI (KVVEXH) hnglkVVh factorglkwh 2006- 1321 637370 1113676.1* 00.962. 19061 001306. 434 O:25여-114. 541 12.19696 8592 21.26. 18236.0.91025 629 447 260 5.4752666904111276104689281 2006-1350640 810:52311250.0.70836 655. 20011224. 765 341 01734* 1559614 8585 5243 9682 .28120. 934.4.00.1025 453 856 730 5.-5159755992921..023832 2006. IMO111627229 314453 10:8705. 8507. 10.0.633 327* 503001Umit 1200 063 0114. 321 946. 12. 1309583 8608 211.32148. 40026 388 341 354 5..-7795260243957312B03361502= 20Q6- 110: 1190481 851 123643 220793 100.609. 246188 7540010.11083.4. 23 947* 101- 05978 8594 077497 1.319140. 15.031 026 462 620 383 931 4680378301512..9993453 2006-1215263 2114938 19:15321 10.0.61103. 285064 5002011096. ᅥ877 0.0119546 B584 129. .193* 37. 5.79031026 666 843 524 314.-5747226037751902369182 glkwh

D- 2

Sᅮ× Erlqme Cc.,Ltd

饔간鱗》礫갼
E.Test Cell information

Fue Fuel Speci'typ。 p「C『opertis: gravity-Categ。 0.8763ry.50-F-DMc Fuelelementalanalysi$

Vlscosity 11 .50 cst@ 40’C Carbon Hyd Nitrogen Oxygen sulPhur LHVIHu 『ogen -- 1870,0011051924422 %% kCallkg ma$SS maSS maSS S

MamufactUre 沙desel

(IyPU)

MeaSUrement

range

Spangasconc CallbrationDeviation NOx CCOZ 02Analyser Analyser Analyser Analyser Analyser HOribaOriba HOnba HOnba AIA- AIA- CLA-120 120 155(NDIR) (N미R) (CLD) O0O--2000 31 %ppm 1960 929271 ppm % 05114 %% FMA ’126D (PMD) ᅮHC Analyser HOriba FMA. 126D (H.RD O0 --500 25 %ppmCI 24 20 % - 05 %

05 % Speed POWer PRO’ IA RM- 1500 O-30000 rPm 소o.58rpm Air FUelnOW利O뷔I Yokogawa KO 「eaAND CaICu!atjon based Weight WT23Oᄋntype NOX !eChnjCal 0-O-1600 0000 COde kwkgt 士0. 土2.21 %

Appen이x 6.MethodZ,U미versal, Carbᄋ nloxygenbalancemethod

EXhaUst flow Temperatore Amb Charge 【ent繃ral「 MANTestOB& W TestO N06OI 61OZO5 0O--200 50 ’C°C 紬쇘繇 動 土土0.0.25 ·°CC

「T下님 눙rT:l r 「 緻楓 려 亥嫩l

Exhausigas MAN B& W N06OI OZO 0 .600 驢C

一盼L匯

mpr瓣玳蹠籬議r 소 1.5 °C

CO이ant LVV NO601 01 6 O -200 ·C

r齬馱L 驢纏천뺘轍糧離熬커 士 1.2 °C

FUel L너I NO60001 9 O - 160 °C

r 溝「緘즐珊纖蠟긔:盼댔치汗峰치

Amb- Charge Ambient PHumidity Exhaust Dlameter Insulatiᄋ Probe SamPleing Remark 『essu entIOCatlon 『eair nair Pipe hose length Hyupsung Test。 SatO - 54751 Test。 BaromeX 1.41615 2SamPling m5 affer 16mturb。 980 fr。 gasOm.-charger femperature IO40 samPling 4 mbar Kg/ 440(26* cmnOpmmIV驪격짜, I補戀 -『obe 6:mminfrom to爐190 pre- 錡椧l聊俎훠― 狸exhaust ’CsamPler atal-gas -loads exit) 소1소2 11.2.62m bar °C%

STX Engine C以,Ltd

르 뻬낚괘
Discoverer Americas 

Forklift Engines – EPA Nonroad Interim Tier 4 Emission Certification Nameplate 

 

Developer 

Main Engine – IMO Emission Certification Document 

 




Developer 

Emergency Generator Engine – Tier I Emission Certification Document 

 
1

Kyle Heitkamp

From: Ryan Roudebush <RRoudebush@mustangcat.com>

Sent: Friday, June 29, 2012 7:16 AM

To: Kyle Heitkamp

Subject: RE: Maersk Developer - Caterpillar Engine Question

Kyle...Here is the info. You requested. 

US EPA Marine emissions regulations are only required (and apply to) US flagged vessels. IMO would apply for all 

vessels over 400 GT's, with exclusions for emergency engines and any engines whose function is dedicated solely to the 

exploitation of sea bed minerals (drilling, frac, mud pump, cement pump): 

IMO 2000 -

 *************************************************** M1

Gaseous emissions data measurements are consistent with those 

described 

in REGULATION 13 of ANNEX VI of MARPOL 73/78 and ISO 8178 for 

measuring 

HC, CO, PM, and NOx. 

 

This engine's exhaust emissions are in compliance with the INTERNATIONAL 

MARINE ORGANIZATION'S ÝIMO ̈ regulations. 

EPA TIER-I 2004 - 2007 

*************************************************** L1

Gaseous emissions data measurements are consistent with those described in 

EPA 40 CFR PART 94.103 and ISO 8178 for measuring HC, CO, PM, and NOx. 

 

This engine conforms to US EPA marine compression-ignition 

emission 

regulations. 

 

LOCALITY AGENCY/LEVEL 

------------------ ------------ 

U. S. (incl Calif) EPA/TIER-1 

EPA TIER-I 2000 - 2005 

*************************************************** A4

Gaseous emissions data measurements are consistent with those 

described 

in EPA 40 CFR PART 89 SUBPART D and ISO 8178 for measuring HC, CO, PM, 

and NOx. 

 

Gaseous emissions values are WEIGHTED CYCLE AVERAGES and are in compliance 

with the following non-road regulations: 

 

LOCALITY AGENCY/LEVEL MAX LIMITS - g/kW-hr 

------------------ ------------ -----------------------------------

 
2

U. S. (incl Calif) EPA/Tier1 CO:11.4 HC:1.3 NOx:9.2 PM:0.5 

REFERENCE EXHAUST STACK DIAMETER 292 MM 

WET EXHAUST MASS 11,090.0 KG/HR 

WET EXHAUST FLOW (464.00 C STACK TEMP ) 391.30 M3/MIN 

WET EXHAUST FLOW RATE ( 0 DEG C AND 101.2 KPA) 144.80 M3/MIN 

DRY EXHAUST FLOW RATE ( 0 DEG C AND 101.2 KPA) 133.40 M3/MIN 

FUEL FLOW RATE 443 L/HR

RATED SPEED 

"Potential site 

variation" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX 

(AS NO2) 

G/HR 

TOTAL CO 

G/HR 

TOTAL 

HC G/HR 

PART 

MATTER 

G/HR 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 21,109.00 1,353.00 911.00 344.60 10.7000 1.2800 

1,368.8 75 1,415.5 12,068.00 1,264.00 542.00 192.50 11.1000 1.2800 

912.5 50 945.6 7,492.00 1,818.00 388.00 209.40 11.1000 1.3200 

456.3 25 480.3 4,605.00 1,519.00 342.00 166.50 12.7000 1.3500 

182.5 10 193.9 2,518.00 3,662.00 472.00 153.60 15.6000 1.2800

RATED SPEED 

"Potential site 

variation" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX 

(AS NO2) 

mg/norm cu 

M @ %5 O2 

TOTAL CO 

mg/norm cu 

M @ %5 O2 

TOTAL HC 

mg/norm cu 

M @ %5 O2 

PART 

MATTER 

mg/norm cu 

M @ %5 O2 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 4,108.7 263.4 177.2 67.100 10.7000 1.2800 

1,368.8 75 1,415.5 3,024.3 316.6 135.9 48.300 11.1000 1.2800 

912.5 50 945.6 2,668.7 647.6 138.3 74.600 11.1000 1.3200 

456.3 25 480.3 2,924.5 964.7 217.3 105.700 12.7000 1.3500 

182.5 10 193.9 2,974.7 4,326.3 557.1 181.500 15.6000 1.2800

RATED SPEED 

"Potential site 

variation" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX (AS 

NO2) PPM @ 

%5 O2 

TOTAL CO 

PPM @ %5 

O2 

TOTAL HC 

PPM @ %5 

O2 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 1,999 211 286 10.7000 1.2800 

1,368.8 75 1,415.5 1,474 255 219 11.1000 1.2800 
3

912.5 50 945.6 1,299 518 223 11.1000 1.3200 

456.3 25 480.3 1,423 772 351 12.7000 1.3500 

182.5 10 193.9 1,448 3,467 900 15.6000 1.2800

RATED SPEED 

"Potential site 

variation" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX 

(AS NO2) 

G/HP-HR 

TOTAL CO 

G/HP-HR 

TOTAL HC 

G/HP-HR 

PART 

MATTER 

G/HP-HR 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 8.33 0.53 0.36 0.136 10.7000 1.2800 

1,368.8 75 1,415.5 6.36 0.67 0.29 0.101 11.1000 1.2800 

912.5 50 945.6 5.91 1.43 0.31 0.165 11.1000 1.3200 

456.3 25 480.3 7.15 2.36 0.53 0.258 12.7000 1.3500 

182.5 10 193.9 9.68 14.08 1.81 0.591 15.6000 1.2800

RATED SPEED "Potential site 

variation" 

 

EKW PERCENT 

LOAD 

ENGINE POWER 

BKW 

OXYGEN IN EXHAUST 

PERCENT 

BOSCH SMOKE 

NUMBER 

1,825.0 100 1,889.2 10.7000 1.2800 

1,368.8 75 1,415.5 11.1000 1.2800 

912.5 50 945.6 11.1000 1.3200 

456.3 25 480.3 12.7000 1.3500 

182.5 10 193.9 15.6000 1.2800

RATED SPEED 

"Nominal 

Data" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX 

(AS NO2) 

G/HR 

TOTAL CO 

G/HR 

TOTAL 

HC 

G/HR 

TOTAL 

CO2 

KG/HR 

PART 

MATTER 

G/HR 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 17,591.00 752.00 685.00 1,170.8 246.10 10.7000 1.2800 

1,368.8 75 1,415.5 10,057.00 702.00 408.00 910.4 137.50 11.1000 1.2800 

912.5 50 945.6 6,244.00 1,010.00 292.00 622.1 149.60 11.1000 1.3200 

456.3 25 480.3 3,837.00 844.00 257.00 26.8 118.90 12.7000 1.3500 

182.5 10 193.9 2,099.00 2,035.00 355.00 12.1 109.70 15.6000 1.2800

RATED 

SPEED 

"Nominal 

Data" 

 
4

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX 

(AS NO2) 

mg/norm cu M 

@ %5 O2 

TOTAL CO 

mg/norm cu 

M @ %5 O2 

TOTAL HC 

mg/norm cu 

M @ %5 O2 

PART 

MATTER 

mg/norm cu 

M @ %5 O2 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 3,423.9 146.3 133.3 47.9 10.7000 1.2800 

1,368.8 75 1,415.5 2,520.3 175.9 102.2 34.5 11.1000 1.2800 

912.5 50 945.6 2,223.9 359.8 104.0 53.3 11.1000 1.3200 

456.3 25 480.3 2,437.1 535.9 163.4 75.5 12.7000 1.3500 

182.5 10 193.9 2,478.9 2,403.5 418.9 129.6 15.6000 1.2800

RATED SPEED 

"Nominal Data" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX (AS 

NO2) PPM @ %5 

O2 

TOTAL CO 

PPM @ %5 

O2 

TOTAL HC 

PPM @ %5 

O2 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 1,666 117 215 10.7000 1.2800 

1,368.8 75 1,415.5 1,228 142 165 11.1000 1.2800 

912.5 50 945.6 1,083 288 168 11.1000 1.3200 

456.3 25 480.3 1,185 429 264 12.7000 1.3500 

182.5 10 193.9 1,207 1,926 676 15.6000 1.2800

RATED SPEED 

"Nominal 

Data" 

 

EKW PERCENT 

LOAD 

ENGINE 

POWER 

BKW 

TOTAL NOX 

(AS NO2) 

G/HP-HR 

TOTAL C0 

G/HP-HR 

TOTAL HC 

G/HP-HR 

PART 

MATTER 

G/HP-HR 

OXYGEN IN 

EXHAUST 

PERCENT 

BOSCH 

SMOKE 

NUMBER 

1,825.0 100 1,889.2 6.94 0.30 0.27 0.10 10.7000 1.2800 

1,368.8 75 1,415.5 5.30 0.37 0.22 0.07 11.1000 1.2800 

912.5 50 945.6 4.92 0.80 0.23 0.12 11.1000 1.3200 

456.3 25 480.3 5.96 1.31 0.40 0.19 12.7000 1.3500 

182.5 10 193.9 8.07 7.82 1.36 0.42 15.6000 1.2800

Ryan Roudebush 

Well Service and Drilling Products Rep. 

Mustang Cat|Houston, TX 

: 713-452-7758 : 832-646-7648 

: rroudebush@mustangcat.com 

From: Kyle Heitkamp [mailto:kheitkamp@environcorp.com] 

Sent: Thursday, June 28, 2012 4:44 PM 

To: Ryan Roudebush 

Subject: RE: Maersk Developer - Caterpillar Engine Question

Thank you Ryan. I look forward to talking with you tomorrow. 
5

Kyle 

From: Ryan Roudebush [mailto:RRoudebush@mustangcat.com] 

Sent: Thursday, June 28, 2012 2:42 PM 

To: Kyle Heitkamp 

Subject: FW: Maersk Developer - Caterpillar Engine Question

Kyle...I am now responsible for Maersk and will be happy to help. 

I will give you a call tomorrow 

Ryan Roudebush 

Well Service and Drilling Products Rep. 

Mustang Cat|Houston, TX 

: 713-452-7758 : 832-646-7648 

: rroudebush@mustangcat.com 

From: Gregg Bare 

Sent: Thursday, June 28, 2012 3:17 PM 

To: Ryan Roudebush 

Subject: FW: Maersk Developer - Caterpillar Engine Question

From: Kyle Heitkamp [mailto:kheitkamp@environcorp.com] 

Sent: Wednesday, June 27, 2012 6:44 PM 

To: Gregg Bare 

Subject: Maersk Developer - Caterpillar Engine Question 

Hi Greg, 

I am working with Maersk and Statoil to develop an air permit application for exploratory drilling in the eastern Gulf of 

Mexico. 

As part of the permit application, we need to review that the engines on the drilling vessels are certified to comply with 

EPA’s emission standards. Maersk provided me with your contact information and I am hoping you can help me gather 

some emission certification data for a Caterpillar engine on the Maersk Developer drill vessel. The engine I need some 

backup information on is a CAT 3516B manufactured in November 2006 (Serial Number: S2R00259). If it is helpful, the 

drill vessel was manufactured by Keppel Fels at the Keppel Fels, Singapore shipyard. 

From previous experience, a Caterpillar dealer can look up engine performance information on the 

http://tmiwebclassic.cat.com website. Would you be able to help me verify the emissions data and any EPA 

certifications that the Caterpillar engine in question many have? A print out or PDF of the information would be a great 

help for preparing the permit application. 

Thank you very much in advance for any help you can provide, and please do not hesitate to give me a call if you have 

any questions or concerns. 

Thanks, 

Kyle 
6

Kyle Heitkamp | Manager 

ENVIRON International Corporation 

19020 33rd Avenue W, Suite 310 | Lynnwood, WA 98036

T: +1 425 412 1803 | F: +1 425 412 1840 

kheitkamp@environcorp.com

This message contains information that may be confidential, privileged or otherwise protected by law from 

disclosure. It is intended for the exclusive use of the Addressee(s). Unless you are the addressee or authorized 

agent of the addressee, you may not review, copy, distribute or disclose to anyone the message or any 

information contained within. If you have received this message in error, please contact the sender by electronic 

reply to email@environcorp.com and immediately delete all copies of the message. 

This message contains information that may be confidential, privileged or otherwise protected by law from 

disclosure. It is intended for the exclusive use of the Addressee(s). Unless you are the addressee or authorized 

agent of the addressee, you may not review, copy, distribute or disclose to anyone the message or any 

information contained within. If you have received this message in error, please contact the sender by electronic 

reply to email@environcorp.com and immediately delete all copies of the message. 
Developer 

Cement Unit Engines – Tier 2 Emission Certification Documents 

 
1

Kyle Heitkamp

From: Yarigsa Aviles <Yarigsa.Aviles@Halliburton.com>

Sent: Monday, February 06, 2012 2:28 PM

To: DOEV@statoil.com

Cc: Kyle Heitkamp

Subject: Halliburton Cementing unit emissions

Attachments: Halliburton Cementing unit gas emissions.pdf

Follow Up Flag: Follow up

Flag Status: Completed

Donald, 

The information requested is below and in the document attached. Please let me know if it is what you needed. 

EPA TIER-2 2004 - 2010 *************************************************** L2 

Gaseous emissions data measurements are consistent with those described 

in EPA 40 CFR PART 94.103 and ISO 8178 for measuring HC, CO, PM, and NOx. 

 

This engine conforms to US EPA MARINE COMMERCIAL compression-ignition 

emission regulations for engines with a swept displacement per cylinder 

equal to or greater than 1.2 L/cyl but less than 2.5 L/cyl. 

 

LOCALITY AGENCY/LEVEL MAX LIMITS - g/kW-hr 

----------------- ------------ ----------------------------------- 

U.S. (incl Calif) EPA/TIER-2 CO:5.0 HC + NOx:7.2 PM:0.2 

IMO - 2000 - 2006 *************************************************** L2 

Gaseous emissions data measurements are consistent with those described 

in EPA 40 CFR PART 94.103 and ISO 8178 for measuring HC, CO, PM, and NOx. 

 

This engine conforms to US EPA MARINE COMMERCIAL compression-ignition 

emission regulations for engines with a swept displacement per cylinder 

equal to or greater than 1.2 L/cyl but less than 2.5 L/cyl. 

 

LOCALITY AGENCY/LEVEL MAX LIMITS - g/kW-hr 

----------------- ------------ ----------------------------------- 

U.S. (incl Calif) EPA/TIER-2 CO:5.0 HC + NOx:7.2 PM:0.2 

These engines were manufactured in 2006 

Thanks, 

Yarigsa Aviles 

Sr Technical Professional- Cementing PSL

Halliburton Energy Services

Gulf of Mexico 

10200 Bellaire Blvd 

Houston, Texas 77072-5299 

work: 832.289.1787 

cell: 787.930.5860 
2

This e-mail, including any attached files, may contain confidential and privileged information for the sole use of 

the intended recipient. Any review, use, distribution, or disclosure by others is strictly prohibited. If you are not 

the intended recipient (or authorized to receive information for the intended recipient), please contact the sender 

by reply e-mail and delete all copies of this message. 




OSV Example – Peyton Candies 

Main Engine and Emergency Generator Engine – IMO Emission Certification 

Documents 

 

















Crewboat Example – Sybil Graham 

Main Engines, Generator Engines, and Thruster Engines – Tier II Emission 

Certification Documents 
Basic Engine Model: Curve Number:

CPL Code: Date:

8779 5-Oct-09

kW [hp] @ rpm

Advertised Power: 93[125]@1800

Aspiration: Turbocharged/Aftercooled

Cylinders: Exhaust Type: Wet

kWm BHP kWm BHP

93 125 N/A

Engine Performance Data @ 1800 rpm

10% OVERLOAD CAPACITY

PRIME POWER

CONTINUOUS POWER

U.S.

Gal/ hour

BHP

Engine Speed Overload Capacity

RPM

1800

kWm

% kg/kWh Lb/

BHP-h

Liter/

hour

kWm BHP

IMO - NOx requirements of the International Maritime Organization (IMO), MARPOL 73/78 Annex VI, Regulation 13

5.9 liter [359.00 in3]

[4.02 in]

120 mm [4.72 in]

CUMMINS INC.

Charleston, SC 29405

Marine Performance Curves

Prime Power

Stanadyne DB4

6

EPA Tier 2 - Model year requirements of the EPA marine regulation (40CFR94)

Continuous Power

CERTIFIED: This marine diesel engine complies with or is certified to the:

6BTA5.9-D(M) D(M)-91702

Engine Configuration:

D403045MX02

102 mm

Displacement:

Bore:

Fuel System:

80%

103

70

23

110%

100%

75%

50%

28.2

25%

10%

20.6

9 5.1

7.4

93 125 0.237 0.390 26.0 6.9

138 0.233 0.383

5.5

47 63 0.276 0.454 15.1 4.0

94 0.251 0.413

2.1

1.3

31 0.295 0.486 8.1

13 0.463 0.761

Stroke:

OUTPUT POWER FUEL CONSUMPTION

103 138

N/A

0

5

10

15

20

25

30

0 20 40 60 80 100 120

Gross Engine Power Output kWm

Litre/hr

Rating Conditions: Ratings are in accordance with ISO 15550 and ISO 8528-5 reference conditions; air pressure at 100 kPa (29.61 in 

Hg), air temperature 25°C (77°F), and 30% relative humidity. The fuel consumption data is based on No. 2 diesel fuel weight at 0.85 

kg/liter (7.1 lb/U.S. gal). 

Power output curves are based on the engine operating with fuel system, water pump, and lubricating oil pump; not included are battery 

charging alternator, fan, optional equipment, and driven components. 

Unless otherwise specified, all data is at rated power conditions and can vary ± 5%. 

Prime Power Rating is applicable for supplying continual electrical power at varied load. The following are the Prime Rating 

parameters: 

* Prime Power is available for an unlimited number of hours per year in a variable load application. Variable load should not exceed a 

 70% average of the Prime Power rating during any operating period of 250 hours. 

* The total operating time at 100% Prime Power shall not exceed 500 hours per year. 

* There is a 10% overload capability for a period of 1 hour within a 12 hour period of operation. Total operating time at 10% overload 

 shall not exceed 25 hours per year. 

TECHNICAL DATA DEPT. CHIEF ENGINEER 
General Engine Data

Engine Model .........................................................................................................................

Rating Type ............................................................................................................................

Rated Engine Power .....................................................................................................kW [hp] 93 [125] 103 [138] ...

Governed Engine Speed ...................................................................................................rpm 1800

Rated HP Production Tolerance ............................................................................................±% 5

Rated Engine Torque ................................................................................................N·m [lb·ft] 494 [365] 546 [403] ...

Low Idle Speed Range Minimum ............................................................ .......................rpm 1100

Maximum .................................................................................rpm 1150

Brake Mean Effective Pressure .....................................................................................kPa [psi] 1056 [153] 1166 [169] ...

Compression Ratio ............................................................................................................... 16.5:1 ...

Piston Speed ......................................................................................................m/sec [ft/min] 7 [1416] ...

Firing Order ............................................................................................. ........................................ ...

Friction Power ..............................................................................................................kW [hp] 13 [17]

Steady State Stability Band at Constant Load ............................................................................% 0.5 ...

Weight Dry - Engine Only ................................................................................................kg [lb] 426 [940] ...

Weight Dry - Engine With Heat Exchanger ..........................................................................kg [lb] 508 [1120]

Fuel System1

Approximate Fuel Flow to Pump .................................................................................l/hr [gal/hr] 26.5 [7.0] 26.5 [7.0]

Maximum Allowable Fuel Supply to Pump Temperature ........................................................°C [°F] 60 [140] 60 [140]

Approximate Fuel Flow Return to Tank .......................................................................l/hr [gal/hr] 0.5 [0.1] -1.7 [-0.4]

Average Fuel Consumption- Emissions ISO 8178 D2 Test Cycle......................................l/hr [gal/hr] 14.1 [3.7]

Air System1

Intake Manifold Pressure ......................................................................................mm Hg [in Hg] ... 179 [53] 193 [57]

Intake Air Flow ...........................................................................................................l/sec [cfm] 192 [406] 198 [420]

Heat Rejection to Ambient .....................................................................................kW [Btu/min] ... 15 [836] 16 [935]

Exhaust System1

Exhaust Gas Flow ..........................................................................................................l/sec [cfm] ... 376 [797] 399 [846]

Exhaust Gas Temperature (Turbine Out) ......................................................... ............................°C [°F] 337 [638] 349 [659]

Exhaust Gas Temperature (Manifold) .........................................................................................°C [°F] 491 [915] 510 [949]

Heat Rejection to Exhaust ..............................................................................................kW [Btu/min] 74 [4200] 79 [4515]

Emissions (in accordance with ISO 8178 Cycle D2)

NOx (Oxides of Nitrogen) ............................................................................ .........g/kw·hr [g/bhp·hr] 5.126 [3.823]

HC (Hydrocarbons) ...........................................................................................g/kw·hr [g/bhp·hr] 0.865 [0.645]

CO (Carbon Monoxide) ..................................................................................g/kw·hr [g/bhp·hr] 1.126 [0.840]

PM (Particulate Matter) ..................................................................................g/kw·hr [g/bhp·hr] 0.249 [0.186]

Emissions (in accordance with ISO 8178 Cycle E2)

NOx (Oxides of Nitrogen) ............................................................................ .........g/kw·hr [g/bhp·hr] 4.950 [3.691]

HC (Hydrocarbons) ...........................................................................................g/kw·hr [g/bhp·hr] 0.720 [0.537]

CO (Carbon Monoxide) ..................................................................................g/kw·hr [g/bhp·hr] 0.690 [0.515]

PM (Particulate Matter) ..................................................................................g/kw·hr [g/bhp·hr] 0.207 [0.154]

TBD= To Be Determined N/A = Not Applicable N.A. = Not Available

1 Unless otherwise specified, all data is at rated power conditions and can vary ± 5%.

2 No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive 

system. Consult Installation Direction Booklet for Limitations.

3 Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler, 

a service fouling factor should be applied according to the cooler manufacturer's recommendation. 

4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable. 

CUMMINS ENGINE COMPANY, INC

COLUMBUS, INDIANA

All Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data: http://marine.cummins.com/

1-5-3-6-2-4

D(M)-91702

DS-4020

8779

5-Oct-09

Auxiliary Marine Engine Performance Data

Prime Power Overload

6BTA5.9-D(M)

Curve No.

DS : 

CPL :

DATE:
D(M)-91702

DS-4020

8779

5-Oct-09

Auxiliary Marine Engine Performance Data

Curve No.

DS : 

CPL :

DATE:

Cooling System1

Sea Water Pump Specifications ....................................................... ................MAB 0.08.17-07/16/2001

Pressure Cap Rating (With Heat Exchanger Option) ..............................................kPa [psi] 69 [10]

Max. Pressure Drop Across Any External Cooling System Circuit .............................kPa [psi] ... 34 [5]

Engines without Low Temperature Aftercooling (LTA )

Jacket Water Aftercooled Engines (JWAC)

Coolant Flow to Engine Heat Exchanger................................... ........................l/min [gal/min] 106 [28]

Start to open.................. ..................................°C [°F] 82 [180]

Full open....................... ....................................°C [°F] 95 [203]

Heat Rejection to Engine Coolant3 ..................................................... .........................kW [Btu/min] 84 [4777] 88 [5031]

TBD= To Be Determined N/A = Not Applicable N.A. = Not Available

1 Unless otherwise specified, all data is at rated power conditions and can vary ± 5%.

2 No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive 

system. Consult Installation Direction Booklet for Limitations.

3 Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler, 

a service fouling factor should be applied according to the cooler manufacturer's recommendation. 

4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable. 

CUMMINS ENGINE COMPANY, INC

COLUMBUS, INDIANA

All Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data: http://marine.cummins.com/

Standard Thermostat Operating Range
CUMMINS INC. Basic Engine Model Curve Number:

Columbus, IN 47201

Marine Performance Curves CPL Code: Date:

CPL 3328 6-Jul-10

Displacement: 50.0 liter [3051 in3] Rated Power: 1342 kw [1800 bhp]

Bore: 159 mm [6.25 in] Rated Speed: 1900 rpm

Stroke: 159 mm [6.25 in] Rating Type: Heavy Duty

Fuel System: MCRS Aspiration: Turbocharged / Low Temperature Aftercooled

Cylinders: 16

Speed

rpm kw (hp) N·m (ft-lb) L/hr (gal/hr)

2000 1342 (1800) 6409 (4727)

1900 1342 (1800) 6747 (4976) 363.1 (95.9)

1800 1342 (1799) 7116 (5248) 305.4 (80.7)

1700 1340 (1796) 7521 (5548) 259.7 (68.6)

1600 1333 (1787) 7952 (5865) 221.6 (58.6)

1500 1311 (1758) 8345 (6155) 189.3 (50.0)

1400 1192 (1598) 8129 (5996) 156.4 (41.3)

1300 1022 (1370) 7501 (5533) 128.0 (33.8)

1200 807 (1081) 6415 (4732) 103.1 (27.2)

1100 659 (883) 5715 (4215) 81.7 (21.6)

1000 533 (715) 5089 (3753) 61.9 (16.3)

900 417 (559) 4426 (3264) 47.0 (12.4)

800 322 (432) 3843 (2835) 34.7 (9.2)

700 226 (303) 3084 (2275) 24.3 (6.4)

• Engine achieves or exceeds rated rpm at full throttle under any steady operating condition

• Engine achieves or exceeds rated rpm when accelerating from idle to full throttle

Fuel Consumption is based on fuel of 35 deg. API gravity at 16 deg C [60 deg. F] having LHV of 42,780 kj/kg [18390 Btu/lb] and weighing 838.9 g/liter [7.001 lb/U.S. gal].

 rated speed at full throttle during a dead push or bollard pull

CHIEF ENGINEER

Full Throttle- Power Full Throttle- Torque Fuel Cons.- Prop. Curve 3.0 Exp.

Heavy Duty (HD): Intended for continuous use in variable load applications where full power is limited to eight (8) hours out of every ten (10) hours 

of operation. Also, reduced power operations must be at or below 200 rpm of the maximum rated rpm. This is an ISO 15550 fuel stop power rating 

and is for applications that operate 5,000 hours per year or less.

Full Throttle curve represents power at the crankshaft for mature gross engine performance corrected in accordance with ISO 15550. Propeller Curve represents approximate power 

demand from a typical propeller. Propeller Shaft Power is approximately 3% less than rated crankshaft power after typical reverse/reduction gear losses and may vary depending on the 

type of gear or propulsion system used.

Rated Conditions: Ratings are based upon ISO 15550 reference conditions; air pressure of 100 kPa [29.612 in Hg], air temperature 25deg. C [77 deg. F] and 30% relative humidy. Power is 

in accordance with IMCI procedure. Member NMMA. Unless otherwise specified, all data is at rated power conditions and can vary ± 5%. 

* Cummins Full Throttle Requirements:

• Engines in variable displacement boats (such as pushboats, tugboats, net draggers, etc.) achieve no less than 100 rpm below 

QSK50-M Tier 2

Engine Configuration

D283041MX03

M-6749

CERTIFIED: This diesel engine complies with or is certified to the following agencies requirements:

IMO Tier II (Two) NOx requirements of International Maritime Organization (IMO), MARPOL 73/78 Annex VI, Regulation 13

EPA Tier 2 - Model year requirements of the EPA marine regulation (40CFR94)

EU Stage IIIa - EC Nonroad Mobile Machinery Directive (2004/26/EC)

Propeller Demand

Full Throttle

1900 2000

*Propeller can be sized within or 

above the speed range shown

0

100

200

300

400

500

600

700

800

900

1000

1100

1200

1300

1400

700800

900

100011001200

1300

140015001600

17001800

19002000

21002200

Engine Speed - rpm

Power (kw)

0

200

400

600

800

1000

1200

1400

1600

1800

2000

Power (hp)
Curve No. M-6749

DS : D28-MX-1

CPL : CPL 3328

DATE: 6-Jul-10

General Engine Data

Engine Model ..........................................................................................................................................

Rating Type ...........................................................................................................................................

Rated Engine Power .......................................................................................................kW [hp] 1342 [1800]

Rated Engine Speed ..............................................................................................................rpm 1900

Rated Power Production Tolerance ............................................................................................±% 3

Rated Engine Torque ......................................................................................................N·m [lb·ft] 6746 [4976]

Peak Engine Torque @ 1500 rpm...................................................................................N·m [lb·ft] 8345 [6155]

Brake Mean Effective Pressure ..........................................................................................kPa [psi] 1695 [246]

Indicated Mean Effective Pressure....................................................................................kPa [psi] N.A. [N.A.]

Maximum Allowable Engine Speed ...........................................................................................rpm 2375

Maximum Torque Capacity from Front of Crank2 ..................................................................N·m [lb·ft] 2998 [2211]

Compression Ratio .............................................................................................................................. 15:1

Piston Speed ...........................................................................................................m/sec [ft/min] 10.1 [1979]

Firing Order .........................................................................................................................................

Weight (Dry) - Engine Only - Average .....................................................................................kg [lb] 6615 [14584]

Weight (Dry) - Engine With Heat Exchanger System - Average.....................................................kg [lb] 6946 [15313]

Weight Tolerance (Dry) Engine Only ........ .................................................................3xStd Dev( ±%) 6.9

Governor Settings

Default Droop Value.................................. .................Refer to MAB 2.04.00-03/23/2006 for Droop explanation 5%

Minimum Droop Allowed...............................................................................................................

Maximum Droop Allowed..............................................................................................................

High Speed Governor Break Point...............................................................................................rpm 2000

Minimum Idle Speed Setting ..................................................................................................rpm 650

Normal Idle Speed Variation ........................................................................ .............................±rpm 10

High Idle Speed Range Minimum .....................................................................................................rpm 2000

Maximum .....................................................................................................rpm 2100

Noise and Vibration 

Average Noise Level - Top (Idle).. .................................................dBA @ 1m TBD

(Rated) ................................................dBA @ 1m TBD

Average Noise Level - Right Side (Idle).. .................................................dBA @ 1m TBD

(Rated) ................................................dBA @ 1m TBD

Average Noise Level - Left Side (Idle).. .................................................dBA @ 1m TBD

(Rated) ................................................dBA @ 1m TBD

Average Noise Level - Front (Idle).. .................................................dBA @ 1m TBD

(Rated) ................................................dBA @ 1m TBD

Fuel System1

Avg. Fuel Consumption - ISO 8178 E3 Standard Test Cycle ................................................l/hr [gal/hr] 252.1 [68.1]

Fuel Consumption at Rated Speed .................................................................................l/hr [gal/hr] 363.1 [95.9]

Approximate Fuel Flow to Pump .....................................................................................l/hr [gal/hr] 762.0 [201.3]

Maximum Allowable Fuel Supply to Pump Temperature ............................................................°C [°F] 60.0 [140]

Approximate Fuel Flow Return to Tank ...........................................................................l/hr [gal/hr] 398.9 [105.4]

Approximate Fuel Return to Tank Temperature .....................................................................°C [°F] 53.3 [128]

Maximum Heat Rejection to Drain Fuel ..........................................................................kW [Btu/min] 2.7 [154]

Fuel Pressure - Pump Out/Rail ................................................................. INSITE Reading .........................................................................kPa [psi] 140044 [20,312]

TBD= To Be Determined N/A = Not Applicable N.A. = Not Available

1 Unless otherwise specified, all data is at rated power conditions and can vary ± 5%. 

2 No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive 

system. Consult Installation Direction Booklet for Limitations. 

3

Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler, 

a service fouling factor should be applied according to the cooler manufacturer's recommendation. 

4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable. 

5 May not be at rated load and speed. Maximum heat rejection may occur at other than rated conditions.

CUMMINS ENGINE COMPANY, INC

COLUMBUS, INDIANA

All Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data: http://marine.cummins.com/

2-1-6-5-4-3-10-7-16-15-12-

11-14-13-8-9

0%

16%

Propulsion Marine Engine Performance Data

QSK50-M Tier 2

Heavy Duty
Curve No. M-6749

DS : D28-MX-1

CPL : CPL 3328

DATE: 6-Jul-10

Propulsion Marine Engine Performance Data

Air System1

Intake Manifold Pressure ...............................................................................................kPa [in Hg] 262 [77]

Intake Air Flow ..............................................................................................................l/sec [cfm] 2263 [4796]

Heat Rejection to Ambient .........................................................................................kW [Btu/min] 52 [2974]

Exhaust System1

Exhaust Gas Flow ............................................................................................................l/sec [cfm] 4187 [8,872]

Exhaust Gas Temperature (Turbine Out) ................................................. ....................................°C [°F] 334 [633]

Exhaust Gas Temperature (Manifold) ......................................................................................°C [°F] 517 [963]

Emissions (in accordance with ISO 8178 Cycle E3)

NOx (Oxides of Nitrogen) .........................................................................................g/kw·hr [g/hp·hr] 6.54 [4.88]

HC (Hydrocarbons) ..................................................................................................g/kw·hr [g/hp·hr] 0.18 [0.14]

CO (Carbon Monoxide) .............................................................................................g/kw·hr [g/hp·hr] 0.70 [0.52]

PM (Particulate Matter) ..........................................................................................g/kw·hr [g/hp·hr] 0.08 [0.06]

Cooling System1

Sea Water Pump Specifications .......................................................................MAB 0.08.17-07/16/2001

Pressure Cap Rating (With Heat Exchanger Option) ...................................................................kPa [psi] 103 [15]

Engines with Low Temperature Aftercooling (LTA )

Two Loop LTA (For both 1 & 2 pump systems)

Main Engine Circuit

Coolant Flow to Main Cooler (with blocked open thermostat)..............................................l/min [gal/min] 1267 [335]

Start to open.....................................................°C [°F] 82 [180]

Full open..........................................................°C [°F] 95 [202]

Heat Rejection to Engine Coolant3 ...................................................................................kW [Btu/min] 818 [46587]

Coolant Flow to LTA Cooler (with blocked open thermostat)...............................................l/min [gal/min] 632 [167]

Start to open.....................................................°C [°F] 46 [115]

Full open..........................................................°C [°F] 57 [135]

Heat Rejection to Engine Coolant3 ...................................................................................kW [Btu/min] 422 [24009]

Maximum Coolant Inlet Temperature from LTA Cooler................................................................°C [°F] 49 [120]

TBD= To Be Determined N/A = Not Applicable N.A. = Not Available

1 Unless otherwise specified, all data is at rated power conditions and can vary ± 5%. 

2 No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive 

system. Consult Installation Direction Booklet for Limitations. 

3

Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler, 

a service fouling factor should be applied according to the cooler manufacturer's recommendation. 

4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable. 

5 May not be at rated load and speed. Maximum heat rejection may occur at other than rated conditions.

CUMMINS ENGINE COMPANY, INC

COLUMBUS, INDIANA

All Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data: http://marine.cummins.com/

Aftercooler (LTA) Circuit 

LTA Thermostat Operating Range

Standard Thermostat Operating Range
Basic Engine Model: Curve Number:

CPL Code: Date:

8509 5-Oct-09

kW [hp] @ rpm

Advertised Power: 201[270]@1800

Aspiration: Turbocharged / Aftercooled

Cylinders: Exhaust Type: Water Jacketed Exhaust Manifold and Turbo

kWm BHP kWm BHP

201 270 N/A

Engine Performance Data @ 1800 rpm

10% OVERLOAD CAPACITY

PRIME POWER

CONTINUOUS POWER

U.S. Gal/ 

hour

BHP

Engine Speed Overload Capacity

RPM

1800

kWm

% kg/kWh Lb/ BHPh

Liter/

hour

kWm BHP

IMO - NOx requirements of the International Maritime Organization (IMO), MARPOL 73/78 Annex VI, Regulation 13

8.3 liter [504.00 in3]

[4.49 in]

135 mm [5.32 in]

CUMMINS INC.

Charleston, SC 29405

Marine Performance Curves

Prime Power

Bosch P7100

6

EPA Tier 2 - Model year requirements of the EPA marine regulation (40CFR94)

Continuous Power

CERTIFIED: This marine diesel engine complies with or is certified to the:

6CTA8.3-DM DM-91336

Engine Configuration:

D413045MX02

114 mm

Displacement:

Bore:

Fuel System:

80%

221

151

50

110%

100%

75%

50%

62.4

25%

10%

41.0

20 8.6

16.5

201 270 0.239 0.393 56.6 14.9

297 0.239 0.394

10.8

101 135 0.229 0.376 27.1 7.1

203 0.231 0.380

4.0

2.3

68 0.255 0.420 15.1

27 0.365 0.600

Stroke:

OUTPUT POWER FUEL CONSUMPTION

221 297

N/A

0

20

40

60

80

0 50 100 150 200 250

Gross Engine Power Output kWm

Litre/hr

Rating Conditions: Ratings are in accordance with ISO 15550 and ISO 8528-5 reference conditions; air pressure at 100 kPa (29.61 in 

Hg), air temperature 25°C (77°F), and 30% relative humidity. The fuel consumption data is based on No. 2 diesel fuel weight at 0.85 

kg/liter (7.1 lb/U.S. gal). 

Power output curves are based on the engine operating with fuel system, water pump, and lubricating oil pump; not included are battery 

charging alternator, fan, optional equipment, and driven components. 

Unless otherwise specified, all data is at rated power conditions and can vary ± 5%. 

Prime Power Rating is applicable for supplying continual electrical power at varied load. The following are the Prime Rating 

parameters: 

* Prime Power is available for an unlimited number of hours per year in a variable load application. Variable load should not exceed a 

 70% average of the Prime Power rating during any operating period of 250 hours. 

* The total operating time at 100% Prime Power shall not exceed 500 hours per year. 

* There is a 10% overload capability for a period of 1 hour within a 12 hour period of operation. Total operating time at 10% overload 

 shall not exceed 25 hours per year. 

TECHNICAL DATA DEPT. CHIEF ENGINEER 
General Engine Data

Engine Model .........................................................................................................................

Rating Type ............................................................................................................................

Rated Engine Power ........................................................................................................kW [hp] 201 [270] 221 [297]

Governed Engine Speed ......................................................................................................rpm 1800

Rated HP Production Tolerance ............................................................................................±% ± 5 ...

Rated Engine Torque ...................................................................................................N·m [lb·ft] 1068 [788] 1175 [867]

Low Idle Speed Range Minimum .................................................................................rpm 700

Maximum ........................................................... ..........................rpm 900

Brake Mean Effective Pressure ........................................................................................kPa [psi] 1625 [236] 1788 [259] ...

Compression Ratio .................................................................................................................. 16.8:1 .

Piston Speed .........................................................................................................m/sec [ft/min] 8 [1595] ...

Firing Order ............................................................................................. ........................................ ...

Friction Power ..............................................................................................................kW [hp] 22 [30] .

Steady State Stability Band at Constant Load ............................................................................% 0.5 ...

Weight Dry - Engine Only ...................................................................................................kg [lb] 712 [1570]

Weight Dry - Engine With Heat Exchanger .............................................................................kg [lb] 760 [1675]

Noise and Vibration 

Average Noise Level - Top N.A.

N.A.

Average Noise Level - Right Side N.A.

N.A.

Average Noise Level - Left Side N.A.

N.A.

Fuel System1

Approximate Fuel Flow to Pump .................................................................................l/hr [gal/hr] 208.2 [55.0] 208.2 [55.0]

Maximum Allowable Fuel Supply to Pump Temperature ........................................................°C [°F] 60 [140] 60 [140]

Approximate Fuel Flow Return to Tank ......................................................... ..............l/hr [gal/hr] 151.6 [40.1] 145.8 [38.5]

Approximate Fuel Return to Tank Temperature .....................................................................°C [°F] TBD TBD

Maximum Heat Rejection to Drain Fuel .......................................................................kW [Btu/min] 0.6 [35] 0.8 [45]

Fuel Rail Pressure .......................................................................................................kPa [psi] N/A N/A

Average Fuel Consumption- Emissions ISO 8178 D2 Test Cycle......................................l/hr [gal/hr] 27.1 [7.2]

Air System1

Intake Manifold Pressure .........................................................................................mm Hg [in Hg] 197 [58] 216 [64]

Intake Air Flow ...........................................................................................................l/sec [cfm] ... 253 [537] 269 [571]

Heat Rejection to Ambient ........................................................................................kW [Btu/min] . 15 [841] 16 [899]

Exhaust System1

Exhaust Gas Flow ...............................................................................................................l/sec [cfm] ... 624 [1322] 680 [1440]

Exhaust Gas Temperature (Turbine Out) .....................................................................................°C [°F] ... 459 [857] 476 [888]

Exhaust Gas Temperature (Manifold) .........................................................................................°C [°F] ... N/A N/A

Heat Rejection to Exhaust ..............................................................................................kW [Btu/min] ... 161 [9158] 182 [10371]

TBD= To Be Determined N/A = Not Applicable N.A. = Not Available

1 Unless otherwise specified, all data is at rated power conditions and can vary ± 5%.

2 No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive 

system. Consult Installation Direction Booklet for Limitations. 

3 Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler, 

a service fouling factor should be applied according to the cooler manufacturer's recommendation. 

4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable.

CUMMINS ENGINE COMPANY, INC

COLUMBUS, INDIANA

All Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data: http://marine.cummins.com/

(Rated) ................................................dBA @ 1m

1-5-3-6-2-4

(Idle).. .................................................dBA @ 1m

(Rated) ................................................dBA @ 1m

(Idle).. .................................................dBA @ 1m

DM-91336

DS-5010

8509

5-Oct-09

Auxiliary Marine Engine Performance Data

Prime Power Overload

6CTA8.3-DM

Curve No.

DS : 

CPL :

DATE:

(Idle).. .................................................dBA @ 1m

(Rated) ................................................dBA @ 1m
DM-91336

DS-5010

8509

5-Oct-09

Auxiliary Marine Engine Performance Data

Curve No.

DS : 

CPL :

DATE:

Emissions (in accordance with ISO 8178 Cycle D2)

NOx (Oxides of Nitrogen) .............................................................................. .........g/kw·hr [g/bhp·hr] 6.532 [4.871]

HC (Hydrocarbons) ...........................................................................................g/kw·hr [g/bhp·hr] 0.142 [0.106]

CO (Carbon Monoxide) .....................................................................................g/kw·hr [g/bhp·hr] 0.384 [0.286]

PM (Particulate Matter) ........................................................................ ..........g/kw·hr [g/bhp·hr] 0.146 [0.109]

Emissions (in accordance with ISO 8178 Cycle E2)

NOx (Oxides of Nitrogen) .............................................................................. .........g/kw·hr [g/bhp·hr] 6.209 [4.630]

HC (Hydrocarbons) ...........................................................................................g/kw·hr [g/bhp·hr] 0.107 [0.080]

CO (Carbon Monoxide) .....................................................................................g/kw·hr [g/bhp·hr] 0.362 [0.270]

PM (Particulate Matter) ........................................................................ ..........g/kw·hr [g/bhp·hr] 0.141 [0.105]

Cooling System1

Sea Water Pump Specifications ....................................................... ................MAB 0.08.17-07/16/2001

Pressure Cap Rating (With Heat Exchanger Option) ...............................................................kPa [psi] 103 [15]

Max. Pressure Drop Across Any External Cooling System Circuit .............................kPa [psi] ... 34 [5]

Engines without Low Temperature Aftercooling (LTA )

Jacket Water Aftercooled Engines (JWAC)

Coolant Flow to Main Cooler (with open thermostat).................................... ..........................l/min [gal/min] 208 [55]

Start to open.................... ..................................°C [°F] 71 [160]

Full open....................... ....................................°C [°F] 83 [182]

Heat Rejection to Engine Coolant3 .......................................................... .........................kW [Btu/min] 189 [10741] 213 [12141]

TBD= To Be Determined N/A = Not Applicable N.A. = Not Available

1 Unless otherwise specified, all data is at rated power conditions and can vary ± 5%.

2 No rear loads can be applied when the FPTO is fully loaded. Max PTO torque is contingent on torsional analysis results for the specific drive 

system. Consult Installation Direction Booklet for Limitations. 

3 Heat rejection to coolant values are based on 50% water/50% ethylene glycol mix and do NOT include fouling factors. If sourcing your own cooler, 

a service fouling factor should be applied according to the cooler manufacturer's recommendation. 

4 Consult option notes for flow specifications of optional Cummins seawater pumps, if applicable.

CUMMINS ENGINE COMPANY, INC

COLUMBUS, INDIANA

All Data is Subject to Change Without Notice - Consult the following Cummins intranet site for most recent data: http://marine.cummins.com/

Standard Thermostat Operating Range
Attachment 3 

Updated Part 71 Forms for Developer 
EPA Form 5900-79 Developer 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

GENERAL INFORMATION AND SUMMARY (GIS)

A. Mailing Address and Contact Information 

Facility name Maersk Developer, StatOil Gulf Services, LLC 

Mailing address: Street or P.O. Box 2103 CityWest Blvd., Suite 800 

City Houston State Texas ZIP 77042 

Contact person: Don Evans Title Environmental Advisor 

Telephone (713) 485 – 2203 Ext. N/A 

Facsimile N/A email doev@statoil.com 

B. Facility Location 

Temporary source? ___Yes _X_No Plant site location Eastern Gulf of Mexico located in the Desoto 

Canyon 

City N/A State N/A County N/A EPA Region__4__ 

Is the facility located within: 

Indian lands? ___YES _X_ NO OCS waters? _X_YES ___ NO 

Non-attainment area? ___ YES _X_NO If yes, for what air pollutants? _________ 

Within 50 miles of affected State? __ YES _X_ NO If yes, What State(s)? _____ 

C. Owner 

Name Maersk Drilling USA, Inc. Street/P.O. Box 2500 CityWest Blvd., Suite 1850 

City Houston State Texas ZIP 77042 

Telephone (713) 346 - 4300 Ext. N/A 

D. Operator 

Name StatOil Gulf Services, LLC Street/P.O. Box 2103 CityWest Blvd., Suite 800 

City Houston State Texas ZIP 77042 

Telephone (713) 918 - 8200 Ext. N/A 
GIS 2

EPA Form 5900-79 Developer 

E. Application Type 

Mark only one permit application type and answer the supplementary question appropriate for the type 

marked. 

_X_ Initial Permit ___ Renewal ___ Significant Mod ___ Minor Permit Mod(MPM) 

___ Group Processing, MPM ___ Administrative Amendment 

For initial permits, when did operations commence? 07/01/2013 (anticipated date) 

For permit renewal, what is the expiration date of current permit? _____/____/_____ 

F. Applicable Requirement Summary 

Mark all types of applicable requirements that apply. 

___ SIP ___ FIP/TIP _X_PSD ___Non-attainment NSR

 

___ Minor source NSR _X_ Section 111 ___ Phase I acid rain ___Phase II acid rain 

___ Stratospheric ozone _X_OCS regulations _X_ NESHAP ___ Sec. 112(d) MACT 

___ Sec. 112(g) MACT ___ Early reduction of HAP ___ Sec 112(j) MACT ___ RMP [Sec.112(r)] 

 

___ Tank Vessel requirements, sec. 183(f)) ___ Section 129 Standards/Requirement 

___ Consumer / comm.. products, ' 183(e) _X_ NAAQS, increments or visibility (temp. sources) 

Has a risk management plan been registered? ___YES _X_NO Regulatory agency ____________ 

Phase II acid rain application submitted? ___YES _X_NO If yes, Permitting authority ____________

G. Source-Wide PTE Restrictions and Generic Applicable Requirements 

Cite and describe any emissions-limiting requirements and/or facility-wide "generic" applicable requirements. 

40 CFR 82 Subpart F – StatOil will comply with all applicable provisions of this regulation as it relates to the 

servicing, maintenance, and reporting of appliances using Class I and II refrigerants installed on the

Developer rig. 
GIS 3

EPA Form 5900-79 Developer 

H. Process Description 

List processes, products, and SIC codes for the facility. 

 Process Products SIC 

Exploration N/A 1382 

I. Emission Unit Identification 

Assign an emissions unit ID and describe each emissions unit at the facility. Control equipment and/or alternative 

operating scenarios associated with emissions units should by listed on a separate line. Applicants may exclude 

from this list any insignificant emissions units or activities. 

Emissions Unit ID Description of Unit

GEN 

Wartsila Diesel Engine (GEN-1) 

Wartsila Diesel Engine (GEN-2) 

Wartsila Diesel Engine (GEN-3) 

Wartsila Diesel Engine (GEN-4) 

Wartsila Diesel Engine (GEN-5) 

Wartsila Diesel Engine (GEN-6) 

Wartsila Diesel Engine (GEN-7) 

Wartsila Diesel Engine (GEN-8) 

E GEN Emergency Diesel Generator Engine 

OSV Offshore Support Vessels 

CREW Crew Boats 

CMU 

Cement Unit Engine (CMU-1) 

Cement Unit Engine (CMU-2) 

IE – MUD Drilling Mud Degassing 

IE – FUG Fugitive Component Emissions 

IE – FO CMV ST Cement Unit Storage Tank 

IE – FO ST 

Fuel Oil Storage Tank Port Side (#1) 

Fuel Oil Storage Tank Starboard Side (#2) 

Fuel Oil Storage Tank Port Side (#3) 

Fuel Oil Storage Tank Starboard Side (#4) 

IE – FO SER ST 

Fuel Oil Service Tank Port Side 

Fuel Oil Service Tank Starboard Side 

IE – FO SET ST 

Fuel Settling Tank Port Side 

Fuel Settling Tank Starboard Side 

IE – FO E GEN ST Standby Generator Fuel Oil Tank 

 IE – Insignificant Emissions sources (see IE Form)
GIS 4

IE – FO LB ST 

Life Boat Storage Tank (#1) 

Life Boat Storage Tank (#2) 

Life Boat Storage Tank (#3) 

Life Boat Storage Tank (#4) 

IE - LB 

Life Boat #1 

Life Boat #2 

Life Boat #3 

Life Boat #4 

IE - MOB Fast Rescue (MOB) 

IE – FO MOB ST Fast Rescue Boat Tank 

IE – AV ST 

Aviation Fuel Tank (#1) 

Aviation Fuel Tank (#2) 

Aviation Fuel Tank (#3) 

IE – WO ST 

Waste Oil Tank (P) 

Waste Oil Tank (S) 

 IE – Insignificant Emissions sources (see IE Form) 

J. Facility Emissions Summary 

Enter potential to emit (PTE) for the facility as a whole for each air pollutant listed below. Enter the name of the 

single HAP emitted in the greatest amount and its PTE. For all pollutants stipulations to major source status 

may be indicated by entering "major" in the space for PTE. Indicate the total actual emissions for fee purposes 

for the facility in the space provided. Applications for permit modifications need not include actual emissions 

information. 

NOx 486.39 tons/yr VOC 26.55 tons/yr SO2 0.38 tons/yr 

PM-10 9.54 tons/yr CO 64.50 tons/yr Lead 0.01 tons/yr 

Total HAP 0.4 tons/yr 

Single HAP emitted in the greatest amount Benzene PTE 0.2 tons/yr 

Total of regulated pollutants (for fee calculation), Sec. F, line 5 of form FEE * tons/yr 

* Please see the Fee calculations for the Discoverer Americas drill rig for worst-case emissions. 

K. Existing Federally-Enforceable Permits 

 Permit number(s) N/A Permit type N/A Permitting authority N/A 

 Permit number(s) N/A Permit type N/A Permitting authority N/A 
GIS 5

EPA Form 5900-79 Developer 

L. Emission Unit(s) Covered by General Permits 

Emission unit(s) subject to general permit N/A 

 

Check one: ___ Application made ___ Coverage granted 

General permit identifier ______________________________ Expiration Date ____/____/____ 

M. Cross-referenced Information 

Does this application cross-reference information? ___ YES _X_ NO (If yes, see instructions) 
EPA Form 5900-80 Developer 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-1) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26957 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

2

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

3

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 92.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) _30,768____ Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

4

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-2) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26958 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

5

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

6

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 92.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) _30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

7

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-3) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26959 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

8

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

9

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 85.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

10

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-4) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26960 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

11

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

12

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 85.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

13

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-5) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26961 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

14

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

15

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 92.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

16

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-6) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26962 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

17

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

18

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 92.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

19

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-7) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26963 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

20

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

21

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 85.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

22

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID GEN Description Wartsila Diesel Engine (GEN-8) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Power Generation Temporary Source ___Yes _X_No 

Manufacturer Wartsila Model No. 16V26A 

Serial Number 26964 Installation Date 08/11/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

23

C. Fuel Data 

Primary fuel type(s) Diesel Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 340 gal/hr 880,652 gal/yra 

a

Statoil is proposing an annual fuel usage limit of 2,641,956 gallons per year for the eight main engines 

 (GEN1 – GEN8). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

24

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 85.0 Inside stack diameter (ft) 2.7 

Stack temp(o

F) 662 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 30,768 Velocity (ft/sec) 91.8 
EUD-1 

EPA Form 5900-80 Developer 

 

25

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID EGEN Description Emergency Generator Engine (EGEN) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description* 

Primary use Emergency Power Generation Temporary Source ___Yes _X__No 

Manufacturer Caterpillar Model No. 3516B 

Serial Number S2R00259 Installation Date 11/08/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input ___________ BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

26

C. Fuel Data 

Primary fuel type(s)___Diesel_________ Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 130 gal/hr 5,141 gal/yr 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

27

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 31.0 Inside stack diameter (ft) 1.3 

Stack temp(o

F) 1,139 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 3,808 Velocity (ft/sec) 45.5 
EUD-1 

EPA Form 5900-80 Developer 

 

28

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID CMU Description Cement Unit Engine (CMU-1) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description* 

Primary use Power for Cement Unit Temporary Source ___Yes _X__No 

Manufacturer Caterpillar Model No. C15 

Serial Number Z2C00163 Installation Date 10/18/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input ___________ BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

29

C. Fuel Data 

Primary fuel type(s)___Diesel_________ Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 25.6 gal/hr 1,533 gal/yr a

a

Statoil is proposing an annual fuel usage limit of 3,065 gallons per year for the two cement unit engines 

 (CMU1 and CMU2). 

E. Associated Air Pollution Control Equipment – N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

30

G. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 31.0 Inside stack diameter (ft) 0.67 

Stack temp(o

F) 969.8 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 3,270 Velocity (ft/sec) 156.2 
EUD-1 

EPA Form 5900-80 Developer 

 

31

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID CMU Description Cement Unit Engine (CMU-2) 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description* 

Primary use Power for Cement Unit Temporary Source ___Yes _X__No 

Manufacturer Caterpillar Model No. C15 

Serial Number Z2C00149 Installation Date 09/21/2006 (manufacture date) 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input ___________ BTU/hr Max. Design Heat Input __________MM BTU/hr 
EUD-1 

EPA Form 5900-80 Developer 

 

32

C. Fuel Data 

Primary fuel type(s)___Diesel_________ Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.05 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 25.6 gal/hr 1,533 gal/yr a

a

Statoil is proposing an annual fuel usage limit of 3,065 gallons per year for the two cement unit engines 

 (CMU1 and CMU2). 

E. Associated Air Pollution Control Equipment - N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

33

F. Ambient Impact Assessment 

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) 31.0 Inside stack diameter (ft) 0.67 

Stack temp(o

F) 969.8 Design stack flow rate (ACFM) N/A 

Actual stack flow rate (ACFM) 3,270 Velocity (ft/sec) 156.2 
EUD-1 

EPA Form 5900-80 Developer 

 

34

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID OSV Description Offshore Support Vessels 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description* 

Primary use Transportation of supplies and personnel Temporary Source ___Yes _X__No 

Manufacturer _______________ Model No. _______________ 

Serial Number __________________________ Installation Date ____/____/____ 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input ___________ BTU/hr Max. Design Heat Input __________MM BTU/hr 

*Emissions from Offshore Support Vessels (OSV) are estimated using a typical OSV that can provide service 

to Developer. Any number of OSVs can be used during the drilling campaign thus detailed emissions unit

descriptions are not provided herein.
EUD-1 

EPA Form 5900-80 Developer 

 

35

C. Fuel Data 

Primary fuel type(s)___Diesel_________ Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.0015 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 260 gal/hr 622,416 gal/yr 

E. Associated Air Pollution Control Equipment - N/A

Emissions unit IDc Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

36

H. Ambient Impact Assessment - N/A

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) _______________ Inside stack diameter (ft) _______________ 

Stack temp(oF) _______________ Design stack flow rate (ACFM) _______________ 

Actual stack flow rate (ACFM) _______________ Velocity (ft/sec) _______________ 
EUD-1 

EPA Form 5900-80 Developer 

 

37

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION UNIT DESCRIPTION FOR FUEL COMBUSTION SOURCES (EUD-1) 

A. General Information 

Emissions unit ID CREW Description Crew Boats 

SIC Code (4-digit) 1382 SCC Code________ 

B. Emissions Unit Description 

Primary use Transportation of supplies and personnel Temporary Source ___Yes _X_No 

Manufacturer _______________ Model No. _______________ 

Serial Number __________________________ Installation Date ____/____/____ 

Boiler Type: ___ Industrial boiler ___ Process burner ___ Electric utility boiler 

 Other (describe) _____________________________________________ 

Boiler horsepower rating_________________ Boiler steam flow (lb/hr)_______________ 

Type of Fuel-Burning Equipment (coal burning only):

 

___ Hand fired ___Spreader stoker ___Underfeed stoker ___Overfeed stoker 

___ Traveling grate ___Shaking grate ___Pulverized, wet bed ___ Pulverized, dry bed 

Actual Heat Input __________MM BTU/hr Max. Design Heat Input __________MM BTU/hr 

*Emissions from Crew Boats (CREW) are estimated using a typical crew boat that can provide service to 

Developer. Any number of crew boats can be used during the drilling campaign thus detailed emissions unit 

descriptions are not provided herein. 
EUD-1 

EPA Form 5900-80 Developer 

 

38

C. Fuel Data 

Primary fuel type(s)___Diesel_________ Standby fuel type(s)_____________________ 

Describe each fuel you expected to use during the term of the permit. 

 

 Fuel Type 

Max. Sulfur 

Content (%) 

 Max. Ash 

Content (%) 

BTU Value 

 (cf, gal., or lb.) 

Diesel Fuel 0.05 N/A 19,300 Btu/lb 

 D. Fuel Usage Rates

 Fuel Type Annual Actual 

Usage 

Maximum Usage 

 Hourly Annual 

Diesel Fuel N/A 408 gal/hr 252,195 gal/yr 

E. Associated Air Pollution Control Equipment - N/A

Emissions unit ID____________ Device type_______________________________________ 

Air pollutant(s) Controlled___________________ Manufacturer_________________________ 

Model No.______________________ Serial No._______________________ 

Installation date_____/_____/_________ Control efficiency (%) ____________ 

Efficiency estimation method______________________________________________ 
EUD-1 

EPA Form 5900-80 Developer 

 

39

F. Ambient Impact Assessment - N/A

This information must be completed by temporary sources or when ambient impact assessment is an 

applicable requirement for this emissions unit (this is not common). 

 

Stack height (ft) ____________ Inside stack diameter (ft) ____________

Stack temp(o

F) ____________ Design stack flow rate (ACFM) ____________

Actual stack flow rate (ACFM) ____________ Velocity (ft/sec) ____________
EPA Form 5900-83 Developer 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

INSIGNIFICANT EMISSIONS (IE)

On this page list each insignificant activity or emission unit. In the "number" column, indicate the number 

of units in this category. Descriptions should be brief but unique. Indicate which emissions criterion of part 

71 is the basis for the exemption.

Number Description of Activities or Emissions Units

RAP, except 

HAP HAP 

1 MUD – Fugitive Emissions from Mud Degassing X X 

1 FUG – Fugitive Emissions from Components X X 

4 FO ST – Fuel Oil Storage Tank X X 

2 FO SER ST – Fuel Oil Service Tank X X 

2 FO SET ST – Fuel Setting Tank X X 

1 FO E GEN ST – Standby Generator Fuel Oil Tank X X 

1 FO CMV ST – Cement Unit Storage Tank X X 

4 LB – Life Boat X X 

4 FO LB ST – Life Boat Storage Tank X X 

1 MOB – Fast Rescue (MOB) X X 

1 FO MOB ST – Fast Rescue Boat Tank X X 

3 AV – Aviation Fuel Tank X X 

2 WO – Waste Oil Tank X X 

 

 

 

 
EPA Form 5900-84 Developer 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION CALCULATIONS (EMISS)

Calculate potential to emit (PTE) for applicability purposes and actual emissions for fee purposes for

each emissions unit, control device, or alternative operating scenario identified in section I of form GIS. 

If form FEE does not need to be submitted with the application, do not calculate actual emissions. 

A. Emissions Unit ID GEN 

B. Identification and Quantification of Emissions 

First, list each air pollutant that is either regulated at the unit or present in major amounts, then list any other 

regulated pollutant (for fee calculation) not already listed. HAP may be simply listed as "HAP." Next, 

calculate PTE for applicability purposes and actual emissions for fee purposes for each pollutant. Do not 

calculate PTE for air pollutants listed solely for fee purposes. Include all fugitives for fee purposes. You may 

round to the nearest tenth of a ton for yearly values or tenth of a pound for hourly values. 

Air Pollutants 

Emission Rates 

CAS No. 

 Actual 

 Annual 

 Emissions 

 (tons/yr) 

Potential to Emit 

 Hourly 

 (lb/hr) 

 Annual 

 (tons/yr) 

Particulate Matter N/A 4.92 6.38 

Sulfuric Oxides ( SOx) N/A 0.22 0.28 

Nitrogen Oxides (NOx ) N/A 267.67 346.90 

Volatile Organic Compounds (VOC) N/A 14.07 18.23 

Carbon Monoxide (CO) N/A 12.79 16.58 

PM10 N/A 4.92 6.38 

PM2.5 N/A 4.92 6.38 

CO2e N/A 22,850.19 29,613.84 

Lead N/A 4.05E-03 5.25E-03 7439-92-1 

TRS N/A 5.09E-03 6.60E-03 

Benzene N/A 1.08E-01 1.40E-01 71-43-2 

Toluene N/A 3.92E-02 5.09E-02 108-88-3 

Xylene (-m) N/A 2.70E-02 3.49E-02 1330-20-7 

Formaldehyde N/A 1.10E-02 1.43E-02 50-00-0 

Acetaldehyde N/A 3.52E-03 4.56E-03 75-07-0 

Acrolein N/A 1.10E-03 1.43E-03 107-02-8 

Napthalene N/A 1.82E-02 2.35E-02 91-20-3 

1,3 Butadiene N/A N/A N/A 106-99-0 
EMISS 

EPA Form 5900-84 Developer 

2

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION CALCULATIONS (EMISS)

Calculate potential to emit (PTE) for applicability purposes and actual emissions for fee purposes for

each emissions unit, control device, or alternative operating scenario identified in section I of form GIS. 

If form FEE does not need to be submitted with the application, do not calculate actual emissions. 

A. Emissions Unit ID E-GEN 

B. Identification and Quantification of Emissions 

First, list each air pollutant that is either regulated at the unit or present in major amounts, then list any other 

regulated pollutant (for fee calculation) not already listed. HAP may be simply listed as "HAP." Next, 

calculate PTE for applicability purposes and actual emissions for fee purposes for each pollutant. Do not 

calculate PTE for air pollutants listed solely for fee purposes. Include all fugitives for fee purposes. You may 

round to the nearest tenth of a ton for yearly values or tenth of a pound for hourly values. 

Air Pollutants 

Emission Rates 

 

CAS No. 

 Actual 

 Annual 

 Emissions 

 (tons/yr) 

Potential to Emit 

 Hourly 

 (lb/hr) 

 Annual 

 (tons/yr) 

Particulate Matter N/A 1.24 0.02 

Sulfuric Oxides ( SOx) N/A 0.03 5.47E-04 

Nitrogen Oxides (NOx ) N/A 38.58 0.76 

Volatile Organic Compounds (VOC) N/A 1.80 0.04 

Carbon Monoxide (CO) N/A 14.03 0.28 

PM10 N/A 1.02 0.02 

PM2.5 N/A 0.99 0.02 

CO2e N/A 2,921.41 57.63 

Lead N/A 5.18E-04 1.02E-05 7439-92-1 

TRS N/A 6.51E-04 1.28E-05 

Benzene N/A 1.39E-02 2.73E-04 71-43-2 

Toluene N/A 5.02E-03 9.90E-05 108-88-3 

Xylene (-m) N/A 3.45E-03 6.80E-05 1330-20-7 

Formaldehyde N/A 1.41E-03 2.78E-05 50-00-0 

Acetaldehyde N/A 4.50E-04 8.88E-06 75-07-0 

Acrolein N/A 1.41E-04 2.78E-06 107-02-8 

Napthalene N/A 2.32E-03 4.58E-05 91-20-3 

1,3 Butadiene N/A N/A N/A 106-99-0 
EMISS 

EPA Form 5900-84 Developer 

3

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION CALCULATIONS (EMISS)

Calculate potential to emit (PTE) for applicability purposes and actual emissions for fee purposes for

each emissions unit, control device, or alternative operating scenario identified in section I of form GIS. 

If form FEE does not need to be submitted with the application, do not calculate actual emissions. 

A. Emissions Unit ID CMU 

B. Identification and Quantification of Emissions 

First, list each air pollutant that is either regulated at the unit or present in major amounts, then list any other 

regulated pollutant (for fee calculation) not already listed. HAP may be simply listed as "HAP." Next, 

calculate PTE for applicability purposes and actual emissions for fee purposes for each pollutant. Do not 

calculate PTE for air pollutants listed solely for fee purposes. Include all fugitives for fee purposes. You may 

round to the nearest tenth of a ton for yearly values or tenth of a pound for hourly values. 

Air Pollutants 

Emission Rates 

CAS No. 

 Actual 

 Annual 

 Emissions 

 (tons/yr) 

Potential to Emit 

 Hourly 

 (lb/hr) 

 Annual 

 (tons/yr) 

Particulate Matter N/A 0.33 0.01 

Sulfuric Oxides ( SOx) N/A 0.01 3.26E-04 

Nitrogen Oxides (NOx ) N/A 11.84 0.36 

Volatile Organic Compounds (VOC) N/A 2.51 0.08 

Carbon Monoxide (CO) N/A 8.22 0.25 

PM10 N/A 0.27 0.01 

PM2.5 N/A 0.26 0.01 

CO2e N/A 1,145.20 34.36 

Lead N/A 2.03E-04 6.09E-06 7439-92-1 

TRS N/A 2.55E-04 7.65E-06 

Benzene N/A 6.53E-03 1.96E-04 71-43-2 

Toluene N/A 2.86E-03 8.59E-05 108-88-3 

Xylene (-m) N/A 2.00E-03 5.99E-05 1330-20-7 

Formaldehyde N/A 8.26E-03 2.48E-04 50-00-0 

Acetaldehyde N/A 5.37E-03 1.61E-04 75-07-0 

Acrolein N/A 6.48E-04 1.94E-05 107-02-8 

Napthalene N/A 5.94E-04 1.78E-05 91-20-3 

1,3 Butadiene N/A 2.74E-04 8.21E-06 106-99-0 
EMISS 

EPA Form 5900-84 Developer 

4

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION CALCULATIONS (EMISS)

Calculate potential to emit (PTE) for applicability purposes and actual emissions for fee purposes for

each emissions unit, control device, or alternative operating scenario identified in section I of form GIS. 

If form FEE does not need to be submitted with the application, do not calculate actual emissions. 

A. Emissions Unit ID OSV 

B. Identification and Quantification of Emissions 

First, list each air pollutant that is either regulated at the unit or present in major amounts, then list any other 

regulated pollutant (for fee calculation) not already listed. HAP may be simply listed as "HAP." Next, 

calculate PTE for applicability purposes and actual emissions for fee purposes for each pollutant. Do not 

calculate PTE for air pollutants listed solely for fee purposes. Include all fugitives for fee purposes. You 

may round to the nearest tenth of a ton for yearly values or tenth of a pound for hourly values. 

Air Pollutants 

Emission Rates 

CAS No. 

 Actual 

 Annual 

 Emissions 

 (tons/yr) 

Potential to Emit 

 Hourly 

 (lb/hr) 

 Annual 

 (tons/yr) 

Particulate Matter N/A 5.58 2.99 

Sulfuric Oxides ( SOx) N/A 0.11 0.07 

Nitrogen Oxides (NOx ) N/A 175.81 109.15 

Volatile Organic Compounds (VOC) N/A 7.58 4.31 

Carbon Monoxide (CO) N/A 54.48 33.52 

PM10 N/A 4.59 2.46 

PM2.5 N/A 4.45 2.39 

CO2e N/A 11,255.25 6,976.70 

Lead N/A 2.00E-03 1.24E-03 7439-92-1 

TRS N/A 2.51E-03 1.55E-03 

Benzene N/A 5.38E-02 3.31E-02 71-43-2 

Toluene N/A 1.97E-02 1.20E-02 108-88-3 

Xylene (-m) N/A 1.35E-02 8.24E-03 1330-20-7 

Formaldehyde N/A 8.21E-03 3.44E-03 50-00-0 

Acetaldehyde N/A 3.61E-03 1.12E-03 75-07-0 

Acrolein N/A 7.56E-04 3.42E-04 107-02-8 

Napthalene N/A 8.83E-03 5.54E-03 91-20-3 

1,3 Butadiene N/A 9.87E-05 2.54E-06 106-99-0 
EPA Form 5900-84 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71) 

EMISSION CALCULATIONS (EMISS)

Calculate potential to emit (PTE) for applicability purposes and actual emissions for fee purposes for

each emissions unit, control device, or alternative operating scenario identified in section I of form

GIS. If form FEE does not need to be submitted with the application, do not calculate actual 

emissions. 

A. Emissions Unit ID CREW 

B. Identification and Quantification of Emissions 

First, list each air pollutant that is either regulated at the unit or present in major amounts, then list any 

other regulated pollutant (for fee calculation) not already listed. HAP may be simply listed as "HAP." Next, 

calculate PTE for applicability purposes and actual emissions for fee purposes for each pollutant. Do not 

calculate PTE for air pollutants listed solely for fee purposes. Include all fugitives for fee purposes. You 

may round to the nearest tenth of a ton for yearly values or tenth of a pound for hourly values. 

Air Pollutants 

Emission Rates 

CAS No. 

 Actual 

 Annual 

 Emissions 

 (tons/yr) 

Potential to Emit 

 Hourly 

 (lb/hr) 

 Annual 

 (tons/yr) 

Particulate Matter N/A 2.67 0.82 

Sulfuric Oxides ( SOx) N/A 0.09 0.03 

Nitrogen Oxides (NOx ) N/A 94.54 29.21 

Volatile Organic Compounds (VOC) N/A 7.06 2.18 

Carbon Monoxide (CO) N/A 44.86 13.86 

PM10 N/A 2.19 0.68 

PM2.5 N/A 2.13 0.66 

CO2e N/A 9,146.71 2,826.33 

Lead N/A 1.62E-03 5.01E-04 7439-92-1 

TRS N/A 2.04E-03 6.29E-04 

Benzene N/A 4.43E-02 1.42E-02 71-43-2 

Toluene N/A 1.64E-02 5.74E-03 108-88-3 

Xylene (-m) N/A 1.13E-02 3.98E-03 1330-20-7 

Formaldehyde N/A 1.05E-02 1.05E-02 50-00-0 

Acetaldehyde N/A 5.50E-03 6.59E-03 75-07-0 

Acrolein N/A 9.08E-04 8.36E-04 107-02-8 

Napthalene N/A 7.02E-03 1.79E-03 91-20-3 

1,3 Butadiene N/A 2.16E-04 3.25E-04 106-99-0 
EPA Form 5900-85 Developer 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71)

 

POTENTIAL TO EMIT (PTE)

For each unit with emissions that count towards applicability, list the emissions unit ID and the PTE for 

the air pollutants listed below and sum them up to show totals for the facility. You may find it helpful to 

complete form EMISS before completing this form. Show other pollutants not listed that are present in 

major amounts at the facility on attachment in a similar fashion. You may round values to the nearest

tenth of a ton. Also report facility totals in section J of form GIS. 

 

Emissions Unit 

ID 

Regulated Air Pollutants and Pollutants for which the Source is Major (tons/yr) 

 NOx 

 

 VOC SO2 PM10 CO 

 

 Lead TRS HAP 

GEN 346.90 18.23 0.28 6.38 16.58 0.005 0.007 0.3 

EGEN 0.76 0.036 0.0005 0.02 0.28 1.0e-5 1.3e-5 5.3e-4 

CMU 0.36 0.08 0.0003 0.01 0.25 6.1e-6 7.7e-6 0.001 

OSV 109.15 4.31 0.07 2.46 33.52 0.001 0.002 0.1 

CREW 29.21 2.18 0.03 0.68 13.86 0.0005 0.0006 0.04 

FACILTY TOTALS 486.39 26.55 0.38 9.54 64.48 0.007 0.009 0.4 
Attachment 4 

Discoverer Americas EGEN 40 CFR 55.7 Exemption Request 

Emission Calculations 
Statoil - Title V / PSD Permit Application

 - 40 CFR 55.7, Exemption Request

Engine Specifications

Emissions Unit 

ID

Rating

(HP) Make Model Number Serial Number

E GEN Emergency Diesel Generator Engine 3,097 STX MAN 7L27/38 SB7L27-5835 February 2008

Operating Schedule

180 day/yr, annual operating schedule

7.0 hr/month, normal operating schedule for standby generator (Source: Email from Transocean) x 2 to account for emergency use

Calculate Offsets

Pollutant

Existing 

Engine

NSPS 

Engine

Residual 

Emissions

NOX 1.16 1.03 0.13

CO 0.03 0.03 0.0000PM 0.03 0.03 0.0000PM10 0.03 0.03 0.0000PM2.5 0.02 0.02 0.0000

Total Change (tpy) = 0.13

Criteria Air Pollutant & Greenhouse Gas (CO2e) Emissions NOX CO PM PM

Max. Power 

Rating

Percent 

Power1

Adjusted 

Power 

Rating

Run Time Emission Rate Emission Rate Emission Rate 

(kW) (%) (kW) (hr/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Re

E GEN E-Gen. Engine 2,309 100% 2,309 41 11.03 (1) 1.16 0.26 (1) 0.03 0.30 (2) 0.03 0.24 (2E GEN E-Gen. Engine 2,309 100% 2,309 41 9.80 (3) 1.03 0.26 (1) 0.03 0.30 (2) 0.03 0.24 (2

Emission Factor References

1. Vendor supplied data at different engine loads. EGEN emissions based on 100% load test data.2. AP-42 - Section 3.3 for large engines and Section 3.4 for small engines (<600 hp).3. Certification level based on applicable EPA NSPS Subpart IIII emission standards.NSPS Subpart IIII Engines (Emergency, 2007 and later, 20 ≤ L/cylinder < 25 --> 40 CFR 94.8) - EGEN Engine

NOX + THC 9.8 g/kW-hr

CO 5.0 g/kW-hrPM 0.5 g/kW-hr

Certification level based on EPA NSPS Subpart IIII engines (Emission standards for emergency CI ICE manufacturers 40 CFR 60.4202(e)(1)).

NSPS-Certified Engine Emission Calculations

Emission Factor 

Existing Engine Emission Calculations

NSPS IIII Compliance Option

Purchase Certified Engine 40 CFR 

60.4211(c)

Emissions Unit ID Engine Description Emission Factor Emission Factor Emission Facto

Annual Emissions (tpy)

Engine Description Manufacture Year

The Discoverer Americas is a drilling vessel equipped with several internal compression ignition engines (diesel engines) used to generate power to operate various equipment aboard the rig. The emergency generator engine (EGEN) on the Discoverer Americas is required to be certified to EPA Tier 2 emission 

standards per 40 CFR 60 Subpart IIII based on the engine size and manufacture year. However, the existing engine is not currently certified to EPA's Tier II emission standards. Thus, Statoil is seeking exemption from NSPS emission standards as allowed in 40 CFR 55.7. The only compliance option Statoil has is to replace the EGEN engine with a new EPA-certified engine, which is considered technically infeasible. In accordance with 55.7(b)(4)(iv), the following 

calculations estimate emission offsets based on the difference between the Tier 2 emission standards and the current emissions basis for the EGEN. Note, test data for the EGEN shows CO emissions less than the Tier 2 emission level (5.0 g/kW-hr) and the AP-42 PM emission factor for large engine is less than Tier 2 emission level (0.5 g/kW-hr). Therefore, Statoil assumed existing and Tier 2 certified CO and particulate matter emissions for the EGEN 

were equivalent.