# 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 

# September 17, 2013

Electronic Delivery

Ms. Heather M. Ceron

USEPA Region 4

Air Permits Section

61 Forsyth Street SW

Atlanta, GA 30303-8960

Re: Additional Information – Developer Cement Unit Engines Hours of Operation

Statoil Gulf Services, LLC

Title V and PSD Permit Application

OCS Drilling and Exploration Activities

Dear Ms. Ceron:

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. EPA published proposed permit number

OCS-EPA-R4012 for public review on August 9, 2013. The public comment period ended on

September 9, 2013. On behalf of Statoil, ENVIRON International Corporation (ENVIRON) is

submitting this letter to provide EPA with additional information to be incorporated into the permit

prior to issuance. Specifically, Statoil r equests the hours of operation be increased for the Maersk

Developer (Developer) Cement Unit Engines 1 and 2 (CMU-1 and CMU-2) from 120 hours per year

to 300 hours per year (combined). The proposed change results in minimal increases in annual

emissions, and has no impact on the PSD applicability analysis, BACT analysis, or air quality

analysis as described further herein.

Annual Emission Impacts

Specific Condition 6.8.2 for Cement Engines 1 and 2 (CMU-1 and CMU-2) in the proposed permit

states “ Operating Limit: These engines shall be operated no more than 60 hours per year for each

engine on a rolling 12-month average basis. ” Statoil proposes to operate these engines for a

maximum of 300 hours per year total to meet the cementing demands during the 180-day campaign.

Therefore, Statoil proposes Specific Condition 6.8.2 be revised to read “ Operating Limit: These

engines shall be operated no more than 300 hours per year (combined) on a rolling 12-month

average basis. ” The emission calculations have been updated to account for this increase in hours

of operation and are included as Attachment A. Tabl e 1 below shows the potential to emit emissions

included in the proposed permit compared to the revised emission totals for the Developer (Operating

Scenario 1) along with the resulting change in emission rates in tons per year (tpy).

# Ms. Heather M. Ceron - 2 - September 17, 2013

Table 1

Developer (Scenario 1) Potential to Emit Comparison

Emissions VOC NO X 

# CO SO 2 

# PM PM 10 

# PM 2.5 

# CO 2 

# e Lead

Previous

Proposed

Totals 27.65 484.26 63.32 0.37 10.64 9. 82 9.52 39,333.51 6.99E-3

Revised

Emission

Totals 27.76 484.80 63.69 0.37 10.65 9. 84 9.53 39,385.04 7.00E-3

Change in

Emissions +0.11 +0.54 +0.37 -- +0.01 +0.02 +0.01 +51.53 +1.00E-5



# As documented in Table 1, the emission increases associated with the additional hours of operation

for the cementing unit engines is minimal. Furthermore, the proposed change in hours of operation

has no impacts to the regulatory applicability analysi s previously conducted for these engines or any

other emission sources proposed with the Statoil OCS exploration activities.

PSD Significance Analysis Impacts

ENVIRON has updated the potential to emit for Scenario 1 ( Developer ) to reflect the updated Cement

Unit Engines 1 and 2 emissions as a result of the proposed increase in annual hours of operation.

The revised emission totals for Scenario 1 are presented below in Table 2. As shown, the minor

increase in annual emission rates does not change the pollutants subject to PSD review. Both

operating scenarios are still subject to PSD for NO X 

# emissions only.

Table 2

Potential to Emit for Regulated NSR Pollutants

Pollutant Scenario 1

( Developer ) PTE

(TPY) Scenario 2

( Discoverer

Americas ) PTE

(TPY) Significance Emission

Rate (TPY) PSD Review Required

CO 63.69 60.08 100 No

NO X 

# 484.80 559.72 40 Yes

VOC 27.76 24.82 40 No

PM 10.65 10.16 25 No

PM 10 

# 9.84 9.39 15 No

PM 2.5 

# 9.53 9.14 10 No

SO 2 

# 0.37 0.32 40 No

CO 2 

# e 39,385.04 34,077.77 75,000 (subject to

regulation threshold) No

# Ms. Heather M. Ceron - 3 - September 17, 2013

BACT Impacts

NO X 

# BACT for the cementing unit engines was determined to be use of engines with low NO X 

# engine

design, including turbocharger, aftercooler, and electronic fuel injection along with good combustion

practices and enhanced work practice standards. The proposed increase in hours of operation has

no impact on the previous NO X 

# BACT determination.

Air Quality Analysis Impacts

As noted previously, the increase in hours of operation for the Cement Unit Engines 1 and 2 result in

minor increases in the potential to emit emissions from Scenario 1 ( Developer ). It should be noted

the change in emissions only impacts annual tpy emissions; no change in short-term pound per hour

(lb/hr) emissions is proposed. Therefore, regarding the air quality analysis, the modeled

concentrations for the NO 2 

# 1-hr and PM 2.5 

# 24-hr averaging periods are unchanged. Furthermore,

changes to the predicted concentrations for the annual averaging periods for NO 2 

# and PM 2.5 

# are

expected to be minimal due to the minor (0.1 percent) changes in annual emissions, and would have

no impact on the overall results of the air quality analysis. Tables 6.3.1-1 and 6.4.11-1 presented

below are the results of the Class II and Class I revised air quality analysis provided to EPA in

additional information dated June 2013 and July 12, 2013.

Table 6.3.1-1 (from July 12, 2013 submittal to EPA)

Maximum CALPUFF-Predicted Class II Concentrations

Criteria

Pollutant Averaging

Period Developer

Max.

Concentration

( μ g/m 3 

# ) Discoverer

Americas Max.

Concentration

( μ g/m 3 

# ) Modeling

Significance

Level

( μ g/m 3 

# ) Monitoring

DeMinimus

Concentration

( μ g/m 3 

# )

NO 2 a 

# Annual 0.22 0.28 1.0 14

PM 2.5 

# Annual 0.0061 0.0069 0.3 None

Notes:

a 

# Annual NO X 

# was assumed to be 75 percent converted to NO 2



# .



# Table 6.4.11-1 (from June 2013 submittal to EPA)

Maximum Predicted Class I Concentrations

Criteria Pollutant Averaging Period Developer

Max.

Concentration

( μ g/m 3 

# ) Discoverer

Americas

Max.

Concentration

( μ g/m 3 

# ) EPA SIL

( μ g/m 3 

# ) FLM SIL

( μ g/m 3 

# )

NO 2 a 

# Annual 0.02 0.02 0.1 0.03

PM 2.5 b 

# Annual 0.0004 0.0004 0.06 --

Notes:

a 

# NO X 

# was conservatively assumed to be 75 percent converted to NO 2



# .

b 

# 100 th 

# percentile (maximum) values are presented (not 98 th 

# percentile) using direct PM 2.5 

# emissions only.



# As shown in the tables above, the Class II and Class I predicted concentrations for NO 2 

# and PM 2.5 

# for

the annual averaging periods are well below the relevant Class II and Class I Significant Impact

# Ms. Heather M. Ceron - 4 - September 17, 2013

Levels (SIL). The minor increase in emissions associated with the proposed increase in hours of

operation of the cement unit engines would not result in predicted concentrations above an

applicable SIL. Therefore, Statoil concludes no additional modeling is required for the small increase

in potential annual NO X 

# and PM 2.5 

# emissions proposed herein.

The estimated impacts of Statoil’s proposed exploration activities on the nearest PSD Class I area

(i.e. Breton National Wildlife Refuge) shows visibility impacts just greater than the FLM target value

for the Operating Scenario 2, or the Discoverer Americas drilling vessel and associated support fleet.

Both drilling vessels’ deposition levels are less than the FLM’s target or threshold values. As

documented in EPA’s Preliminary Determination & Statement of Basis supporting the proposed

Statoil permit, the Breton NWR FLM reviewed the PSD Class I area impact assessment and

indicated that because of the conservative assumptions contained in the emissions estimates and

analyses, and the temporary nature of the proposed exploration activities, they expected no

significant project-related impacts. The proposed increase in annual cement unit hours of operation

for the Developer will result in no change to the predicted visibility impacts because the visibility

impacts are based on short-term emissions from the drilling vessels and support vessels.

Furthermore, Statoil believes the minimal increase in NO X 

# emissions (0.01 percent) would have no

impact to annual nitrogen deposition predictions, and there are expected to be no significant projectrelated impacts as previ ously concluded by the FLM.

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 A

Updated Emission CalculationsStatoilEastern GOM OCS Air Permitting ProjectMaersk Developer Emission CalculationsAnnual Emissions SummaryCriteria Air Pollutants & Greenhouse Gas (CO2e) EmissionsEmissions Total VOCNOxCOSO2PMPM10PM2.5CO2eLead TRSUnit ID (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr)Wartsila Diesel Generator Engines GEN 18.23 346.90 16.58 0.28 6.38 6.38 6.38 29,613.84 5.25E-03 6.60E-03Emergency Diesel Generator EngineE-GEN 3.55E-02 0.76 0.28 5.47E-04 2.46E-02 2.02E-02 1.96E-02 57.63 1.02E-05 1.28E-05Lifeboat Engines LB 1.750E-03 8.582E-03 6.293E-03 7.566E-06 6.865E-04 5.644E-04 5.476E-04 0.80 1.41E-07 1.78E-07Fast Rescue Boat Engines MOB 0.00 0.01 0.01 1.06E-05 6.43E-04 5.29E-04 5.13E-04 1.12 1.99E-07 2.49E-07Cement Unit Engines CMU 0.19 0.89 0.62 8.15E-04 0.025 0.020 0.020 85.89 1.52E-05 1.91E-05Offshore Support Vessels OSV 4.29 108.99 33.46 0.07 2.97 2.44 2.37 6,966.08 1.23E-03 1.55E-03Crewboats CREW 1.76 27.24 12.75 0.03 0.77 0.63 0.61 2,635.57 4.67E-04 5.87E-04Cement Unit SS Holding Tank FO CMV ST 4.27E-04 -- -- -- -- -- -- -- -- --Fast Boat Tank FO MOB ST 5.34E-06 -- -- -- -- -- -- -- -- --Fuel Oil Day Tanks FO SER ST 1.96E-02 -- -- -- -- -- -- -- -- --Fuel Oil Settling Tanks FO SET ST 1.51E-02 -- -- -- -- -- -- -- -- --Fuel Oil Storage Tanks FO ST 1.51E-01 -- -- -- -- -- -- -- -- --Life Boat Tank FO LB ST 1.69E-05 -- -- -- -- -- -- -- -- --Emer. Gen. Fuel Oil Tank FO E GEN ST 2.76E-04 -- -- -- -- -- -- -- -- --Aviation Tanks AV ST 2.12E-01 -- -- -- -- -- -- -- -- --Waste Oil Tanks WO ST 2.01E-03 -- -- -- -- -- -- -- -- --Fugitives FUG 0.84 -- -- -- -- -- -- -- -- --Mud Degassing MUD 0.48 -- -- -- -- -- -- 24.11 -- --Painting PAINT 1.54 -- -- -- 0.48 0.33 0.12 -- -- --Welding WELD -- -- -- -- 0.01 0.01 0.01 -- 1.95E-05 --TOTAL 27.76 484.80 63.69 0.37 10.65 9.84 9.53 39,385.04 7.00E-03 8.77E-03Hazardous Air Pollutants (HAPs) EmissionsEmissions Benzene Toluene Xylenes Formaldehyde Acetaldehyde Acrolein Naphthalene 1,3-Butadiene1,2,4-TrimethylbenzeneEthylbenzene Hexane (-n) PAHbis(2-ethylhexyl)phthalate2-Propoxy-ethanolChromiumCobaltManganeseNickelUnit ID (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr) (ton/yr)(ton/yr) (ton/yr) (ton/yr)Wartsila Diesel Generator Engines GEN 1.40E-01 5.09E-02 3.49E-02 1.43E-02 4.56E-03 1.43E-03 2.35E-02 -- -- -- -- -- -- -- -- -- -- --Emergency Diesel Generator EngineE-GEN 2.73E-04 9.90E-05 6.80E-05 2.78E-05 8.88E-06 2.78E-06 4.58E-05 -- -- -- -- -- -- -- -- -- -- --Lifeboat Engines LB 4.55E-06 1.99E-06 1.39E-06 5.75E-06 3.74E-06 4.51E-07 4.13E-07 1.90E-07 -- -- -- -- -- -- -- -- -- --Fast Rescue Boat Engines MOB 6.39E-06 2.80E-06 1.95E-06 8.08E-06 5.25E-06 6.33E-07 5.81E-07 2.68E-07 -- -- -- -- -- -- -- -- -- --Cement Unit Engines CMU 4.90E-04 2.15E-04 1.50E-04 6.20E-04 4.03E-04 4.86E-05 4.45E-05 2.05E-05 -- -- -- -- -- -- -- -- -- --Offshore Support Vessels OSV 3.30E-02 1.20E-02 8.22E-03 3.36E-03 1.07E-03 3.36E-04 5.54E-03 0.00E+00 -- -- -- -- -- -- -- -- -- --Crewboats CREW 1.26E-02 4.60E-03 3.16E-03 1.87E-03 8.06E-04 1.73E-04 2.07E-03 2.11E-05 -- -- -- -- -- -- -- -- -- --Cement Unit SS Holding Tank FO CMV ST 8.40E-07 9.81E-06 2.53E-05 -- -- -- -- -- 2.07E-05 1.36E-06 1.69E-07 -- -- -- -- -- -- --Fast Boat Tank FO MOB ST 1.05E-08 1.23E-07 3.17E-07 -- -- -- -- -- 2.59E-07 1.70E-08 2.12E-09 -- -- -- -- -- -- --Fuel Oil Service Tanks FO SER ST 3.87E-05 4.52E-04 1.17E-03 -- -- -- -- -- 9.54E-04 6.26E-05 7.79E-06 -- -- -- -- -- -- --Fuel Oil Settling Tanks FO SET ST 2.97E-05 3.48E-04 8.97E-04 -- -- -- -- -- 7.33E-04 4.81E-05 5.99E-06 -- -- -- -- -- -- --Fuel Oil Storage Tanks FO ST 2.97E-04 3.48E-03 8.97E-03 -- -- -- -- -- 7.33E-03 4.81E-04 5.99E-05 -- -- -- -- -- -- --Life Boat Tank FO LB ST 3.33E-08 3.89E-07 1.00E-06 -- -- -- -- -- 8.21E-07 5.39E-08 6.70E-09 -- -- -- -- -- -- --Emer. Gen. Fuel Oil Tank FO E GEN ST 5.44E-07 6.36E-06 1.64E-05 -- -- -- -- -- 1.34E-05 8.80E-07 1.10E-07 -- -- -- -- -- -- --Aviation Tanks AV ST 1.83E-03 1.78E-03 6.33E-04 -- -- -- -- -- -- 1.52E-04 7.36E-03 2.76E-05 -- -- -- -- -- --Waste Oil Tanks WO ST 3.96E-06 4.63E-05 1.20E-04 -- -- -- -- -- 9.77E-05 6.41E-06 7.98E-07 -- -- -- -- -- -- --Fugitives FUG 6.59E-06 2.63E-04 2.39E-03 -- -- -- -- -- 8.23E-03 1.07E-04 8.23E-07 -- -- -- -- -- -- --Mud Degassing MUD -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --Painting PAINT -- 6.40E-03 7.91E-01 -- -- -- -- -- -- 1.83E-01 -- -- 7.21E-02 3.53E-01 -- -- -- --Welding WELD -- -- -- -- -- -- -- -- -- -- -- -- -- -- 3.05E-04 1.21E-07 2.80E-03 2.06E-04TOTAL 0.189 0.081 0.852 0.020 0.007 0.002 0.031 0.00004 0.017 0.1840 0.0074 0.00003 0.07212 0.35336 0.00031 0.0000001 0.0028 0.00021Emission SourceEmission SourceSummaryPage 1 of 5ENVIRON International CorporationStatoilEastern GOM OCS Air Permitting ProjectMaersk Developer Emission CalculationsHourly Emissions SummaryCriteria Air Pollutants & Greenhouse Gas (CO2e) EmissionsEmissions Total VOCNOxCOSO2PMPM10PM2.5CO2eLead TRSUnit ID (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr)Wartsila Diesel Generator Engines GEN 14.07 267.67 12.79 0.22 4.92 4.92 4.92 22,850.19 4.05E-03 5.09E-03Emergency Diesel Generator EngineE-GEN 1.80 38.58 14.03 0.03 1.24 1.02 0.99 2,921.41 5.18E-04 6.51E-04Lifeboat Engines LB 0.29 1.43 1.05 0.00 0.11 0.09 0.09 132.84 2.35E-05 2.96E-05Fast Rescue Boat Engines MOB 0.41 2.01 1.34 0.00 0.11 0.09 0.09 186.67 3.31E-05 4.16E-05Cement Unit Engines CMU 2.51 11.84 8.22 0.01 0.33 0.27 0.26 1,145.20 2.03E-04 2.55E-04Offshore Support Vessels OSV 6.67 169.63 52.07 0.10 4.62 3.80 3.68 10,842.14 1.92E-03 2.41E-03Crewboats CREW 5.70 88.16 41.26 0.08 2.49 2.05 1.99 8,529.36 1.51E-03 1.90E-03Cement Unit SS Holding Tank FO CMV ST 1.97E-04 -- -- -- -- -- -- -- -- --Fast Boat Tank FO MOB ST 2.47E-06 -- -- -- -- -- -- -- -- --Fuel Oil Service Tanks FO SER ST 9.10E-03 -- -- -- -- -- -- -- -- --Fuel Oil Settling Tanks FO SET ST 6.99E-03 -- -- -- -- -- -- -- -- --Fuel Oil Storage Tanks FO ST 6.99E-02 -- -- -- -- -- -- -- -- --Life Boat Tank FO LB ST 7.83E-06 -- -- -- -- -- -- -- -- --Emer. Gen. Fuel Oil Tank FO E GEN ST 1.28E-04 -- -- -- -- -- -- -- -- --Aviation Tanks AV ST 9.82E-02 -- -- -- -- -- -- -- -- --Waste Oil Tanks WO ST 9.32E-04 -- -- -- -- -- -- -- -- --Fugitives FUG 0.19 -- -- -- -- -- -- -- -- --Mud Degassing MUD 9.93 -- -- -- -- -- -- 23.92 -- --Painting PAINT 0.71 -- -- -- 0.22 0.16 0.06 -- -- --Welding WELD -- -- -- -- 0.005 0.005 0.005 -- 9.05E-06 --TOTAL 42.47 579.32 130.76 0.44 14.05 12.40 12.08 46,631.73 8.27E-03 1.04E-02Hazardous Air Pollutants (HAPs) EmissionsBenzene Toluene Xylenes Formaldehyde Acetaldehyde Acrolein Naphthalene 1,3-Butadiene1,2,4-TrimethylbenzeneEthylbenzene Hexane (-n) PAHbis(2-ethylhexyl)phthalate2-Propoxy-ethanolChromiumCobaltManganeseNickel(lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr) (lb/hr)Wartsila Diesel Generator Engines GEN 1.08E-01 3.92E-02 2.70E-02 1.10E-02 3.52E-03 1.10E-03 1.82E-02 -- -- -- -- -- -- -- -- -- -- --Emergency Diesel Generator EngineE-GEN 1.39E-02 5.02E-03 3.45E-03 1.41E-03 4.50E-04 1.41E-04 2.32E-03 -- -- -- -- -- -- -- -- -- -- --Lifeboat Engines LB 7.58E-04 3.32E-04 2.31E-04 9.58E-04 6.23E-04 7.51E-05 6.89E-05 3.17E-05 -- -- -- -- -- -- -- -- -- --Fast Rescue Boat Engines MOB 1.06E-03 4.67E-04 3.25E-04 1.35E-03 8.75E-04 1.06E-04 9.68E-05 4.46E-05 -- -- -- -- -- -- -- -- -- --Cement Unit Engines CMU 6.53E-03 2.86E-03 2.00E-03 8.26E-03 5.37E-03 6.48E-04 5.94E-04 2.74E-04 -- -- -- -- -- -- -- -- -- --Offshore Support Vessels OSV 5.14E-02 1.86E-02 1.28E-02 5.23E-03 1.67E-03 5.22E-04 8.62E-03 0.00E+00 -- -- -- -- -- -- -- -- -- --Crewboats CREW 4.07E-02 1.49E-02 1.02E-02 6.04E-03 2.61E-03 5.59E-04 6.70E-03 6.83E-05 -- -- -- -- -- -- -- -- -- --Cement Unit SS Holding Tank FO CMV ST 3.89E-07 4.54E-06 1.17E-05 -- -- -- -- -- 9.58E-06 6.29E-07 7.83E-08 -- -- -- -- -- -- --Fast Boat Tank FO MOB ST 4.87E-09 5.69E-08 1.47E-07 -- -- -- -- -- 1.20E-07 7.87E-09 9.80E-10 -- -- -- -- -- -- --Fuel Oil Service Tanks FO SER ST 1.79E-05 2.09E-04 5.40E-04 -- -- -- -- -- 4.42E-04 2.90E-05 3.61E-06 -- -- -- -- -- -- --Fuel Oil Settling Tanks FO SET ST 1.38E-05 1.61E-04 4.15E-04 -- -- -- -- -- 3.39E-04 2.23E-05 2.77E-06 -- -- -- -- -- -- --Fuel Oil Storage Tanks FO ST 1.38E-04 1.61E-03 4.15E-03 -- -- -- -- -- 3.39E-03 2.23E-04 2.77E-05 -- -- -- -- -- -- --Life Boat Tank FO LB ST 1.54E-08 1.80E-07 4.65E-07 -- -- -- -- -- 3.80E-07 2.49E-08 3.10E-09 -- -- -- -- -- -- --Emer. Gen. Fuel Oil Tank FO E GEN ST 2.52E-07 2.94E-06 7.59E-06 -- -- -- -- -- 6.21E-06 4.07E-07 5.07E-08 -- -- -- -- -- -- --Aviation Tanks AV ST 8.46E-04 8.24E-04 2.93E-04 -- -- -- -- -- -- 7.02E-05 3.41E-03 2.93E-04 -- -- -- -- -- --Waste Oil Tanks WO ST 1.83E-06 2.14E-05 5.53E-05 -- -- -- -- -- 4.52E-05 2.97E-06 3.70E-07 -- -- -- -- -- -- --Fugitives FUG 1.50E-06 6.02E-05 5.45E-04 -- -- -- -- -- 1.88E-03 2.44E-05 1.88E-07 -- -- -- -- -- -- --Mud Degassing MUD -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --Painting PAINT -- 2.96E-03 3.66E-01 -- -- -- -- -- -- 8.48E-02 -- -- 3.34E-02 1.64E-01 -- -- -- --Welding WELD -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1.41E-04 5.58E-08 1.30E-03 9.55E-05TOTAL 0.224 0.087 0.428 0.034 0.015 0.003 0.037 0.0004 0.006 0.0852 0.0034 0.0003 0.0334 0.1636 0.0001 0.0000001 0.0013 0.0001Emission SourceEmission SourceSummaryPage 2 of 5ENVIRON International CorporationStatoilEastern GOM OCS Air Permitting ProjectMaersk Developer Emission CalculationsDrilling Rig Engine Emissions CalculationsEquipment SpecificationsEmissionsUnit IDRating(HP)Make Model NumberSerialNumberWartsila Diesel Generator Engine 1 6,651 Wartsila 16V26A 26957 8/11/2006Wartsila Diesel Generator Engine 2 6,651 Wartsila 16V26A 26958 8/11/2006Wartsila Diesel Generator Engine 3 6,651 Wartsila 16V26A 26959 8/11/2006Wartsila Diesel Generator Engine 4 6,651 Wartsila 16V26A 26960 8/11/2006Wartsila Diesel Generator Engine 5 6,651 Wartsila 16V26A 26961 8/11/2006Wartsila Diesel Generator Engine 6 6,651 Wartsila 16V26A 26962 8/11/2006Wartsila Diesel Generator Engine 7 6,651 Wartsila 16V26A 26963 8/11/2006Wartsila Diesel Generator Engine 8 6,651 Wartsila 16V26A 26964 8/11/2006E GEN Emergency Diesel Generator Engine 2,551 Caterpillar 3516B S2R00259 11/8/2006Lifeboat 1 29 BUKH DV29 122433 8/22/2007Lifeboat 2 29 BUKH DV29 122434 8/22/2007Lifeboat 3 29 BUKH DV29 122435 8/22/2007Lifeboat 4 29 BUKH DV29 122436 8/22/2007MOB Fast Rescue Boat Engine #1 163 Steyr Motors M14 CAM 48227187 3/29/2007Cement Unit Engine (CMU-1) 500 Caterpillar C15 Z2C00163 10/18/2006Cement Unit Engine (CMU-2) 500 Caterpillar C15 Z2C00149 9/21/2006Operating Schedule180 day/yr, annual operating schedule24 hr/day, daily operating schedule for main engines150 hr/yr, annual operating schedule for cement units (300 hr/yr total) (Basis: Email from Halliburton)2 1 hr/month normal operating schedule for life and rescue boats (Source: ) x 2 to account for safety exercises6.7 hr/month, normal operating schedule for standby generator (Source: Maersk provided 2010 actual hours of operation 40hrs/yr)x 2 to account for emergency useEmission Calculation (Annual Basis)Criteria Air Pollutant & Greenhouse Gas (CO2e) EmissionsTotal VOC NOXCO SO2PM PM10PM2.5CO2e LeadMax. PowerRatingPercentPower1AdjustedPowerRatingRunTimeEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRate(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) (g/kW-hr) Ref (ton/yr) (g/kW-hr) Ref (ton/yr)Gen. Engine 1 4,960 60% 2,976 4,320 0.43 (3) 6.08 8.16 (5) 115.63 0.39 (5) 5.53 0.007 (2) 0.09 0.15 (5) 2.13 0.15 (5) 2.13 0.15 (5) 2.13 696.60 (4) 9,871.28 1.23E-04 (6) 1.75E-03Gen. Engine 2 4,960 60% 2,976 4,320 0.43 (3) 6.08 8.16 (5) 115.63 0.39 (5) 5.53 0.007 (2) 0.09 0.15 (5) 2.13 0.15 (5) 2.13 0.15 (5) 2.13 696.60 (4) 9,871.28 1.23E-04 (6) 1.75E-03Gen. Engine 3 4,960 60% 2,976 4,320 0.43 (3) 6.08 8.16 (5) 115.63 0.39 (5) 5.53 0.007 (2) 0.09 0.15 (5) 2.13 0.15 (5) 2.13 0.15 (5) 2.13 696.60 (4) 9,871.28 1.23E-04 (6) 1.75E-03Gen. Engine 4 4,960 0% 0 4,320 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Gen. Engine 5 4,960 0% 0 4,320 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Gen. Engine 6 4,960 0% 0 4,320 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Gen. Engine 7 4,960 0% 0 4,320 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Gen. Engine 8 4,960 0% 0 4,320 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Total Emissions18.23 346.90 16.58 0.28 6.38 6.38 6.38 29,613.84 5.25E-03E GEN E-Gen. Engine 1,902 100% 1,902 39 0.43 (3) 0.035 9.20 (1) 0.76 3.35 (3) 0.28 0.007 (2) 5.5E-04 0.30 (3) 0.02 0.24 (3) 0.02 0.24 (3) 0.02 696.60 (4) 57.63 1.23E-04 (6) 1.02E-05Lifeboat 1 22 100% 22 12 1.53 (3) 0.0004 7.50 (1) 0.002 5.50 (1) 0.0016 0.007 (2) 1.9E-06 0.60 (1) 0.0002 0.49 (1) 0.0001 0.48 (1) 0.0001 696.60 (4) 0.20 1.23E-04 (6) 3.53E-08Lifeboat 2 22 100% 22 12 1.53 (3) 0.0004 7.50 (1) 0.002 5.50 (1) 0.0016 0.007 (2) 1.9E-06 0.60 (1) 0.0002 0.49 (1) 0.0001 0.48 (1) 0.0001 696.60 (4) 0.20 1.23E-04 (6) 3.53E-08Lifeboat 3 22 100% 22 12 1.53 (3) 0.0004 7.50 (1) 0.002 5.50 (1) 0.0016 0.007 (2) 1.9E-06 0.60 (1) 0.0002 0.49 (1) 0.0001 0.48 (1) 0.0001 696.60 (4) 0.20 1.23E-04 (6) 3.53E-08Lifeboat 4 22 100% 22 12 1.53 (3) 0.0004 7.50 (1) 0.002 5.50 (1) 0.0016 0.007 (2) 1.9E-06 0.60 (1) 0.0002 0.49 (1) 0.0001 0.48 (1) 0.0001 696.60 (4) 0.20 1.23E-04 (6) 3.53E-08Total Emissions 1.7E-03 8.6E-03 6.3E-03 7.6E-06 6.9E-04 5.6E-04 5.5E-04 0.80 1.41E-07MOB Engine 1 122 100% 122 12 1.53 (3) 0.002 7.50 (1) 0.01 5.00 (1) 0.01 0.007 (2) 1.1E-05 0.40 (1) 6.43E-04 0.33 (1) 5.29E-04 0.32 (1) 5.13E-04 696.60 (4)1.12 1.23E-04 (6) 1.99E-07Total Emissions0.002 0.012 0.008 1.1E-05 6.43E-04 5.29E-04 5.13E-04 1.12 1.99E-07Cement Engine 1 373 100% 373 150 1.53 (3) 0.09 7.20 (1) 0.44 5.00 (1) 0.31 0.007 (2) 4.1E-04 0.20 (1) 0.012 0.16 (1) 0.010 0.16 (1) 0.010 696.60 (4) 42.95 1.23E-04 (6) 7.61E-06Cement Engine 2 373 100% 373 150 1.53 (3) 0.09 7.20 (1) 0.44 5.00 (1) 0.31 0.007 (2) 4.1E-04 0.20 (1) 0.012 0.16 (1) 0.010 0.16 (1) 0.010 696.60 (4) 42.95 1.23E-04 (6) 7.61E-06Total Emissions0.19 0.89 0.62 8.2E-04 0.025 0.020 0.020 85.89 1.52E-05Engine DescriptionManufacture YearEmission Factor Emission Factor Emission Factor Emission FactorGENGENLBCMUMOBCMUEmission FactorLBEmission FactorEmissionsUnit IDEmission Factor Emission FactorEngine DescriptionEmission FactorThe Maersk Developer is a semi-submersible drilling rig equipped with several internal compression ignition engines (diesel engines) used to generate power to operate various equipment aboard the rig.The following documents the basis and emission estimates for each engine on the Developer.Drilling Rig - updated Sept. 12, 2013Page 3 of 5ENVIRON International CorporationStatoilEastern GOM OCS Air Permitting ProjectMaersk Developer Emission CalculationsEmission Calculation (Annual Basis)Hazardous Air Pollutant (HAP) EmissionsBenzene Toluene Xylenes Formaldehyde Acetaldehyde Acrolein Naphthalene 1,3-ButadieneMaximumPowerRatingPercentPower1AdjustedPowerRatingRunTimeEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRate(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) (g/kW-hr) Ref (ton/yr)Gen. Engine 1 4,960 60% 2,976 4,320 0.0033 (3) 4.68E-02 0.0012 (3) 1.70E-02 8.22E-04 (3) 1.16E-02 3.36E-04 (3) 4.76E-03 1.07E-04 (3) 1.52E-03 3.36E-05 (3) 4.75E-04 5.54E-04 (3) 7.84E-03 -- -- --Gen. Engine 2 4,960 60% 2,976 4,320 0.0033 (3) 4.68E-02 0.0012 (3) 1.70E-02 8.22E-04 (3) 1.16E-02 3.36E-04 (3) 4.76E-03 1.07E-04 (3) 1.52E-03 3.36E-05 (3) 4.75E-04 5.54E-04 (3) 7.84E-03 -- -- --Gen. Engine 3 4,960 60% 2,976 4,320 0.0033 (3) 4.68E-02 0.0012 (3) 1.70E-02 8.22E-04 (3) 1.16E-02 3.36E-04 (3) 4.76E-03 1.07E-04 (3) 1.52E-03 3.36E-05 (3) 4.75E-04 5.54E-04 (3) 7.84E-03 -- -- --Gen. Engine 4 4,960 0% 0 4,320 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Gen. Engine 5 4,960 0% 0 4,320 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Gen. Engine 6 4,960 0% 0 4,320 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Gen. Engine 7 4,960 0% 0 4,320 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Gen. Engine 4 4,960 0% 0 4,320 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Total Emissions 1.40E-01 5.09E-02 3.49E-02 1.43E-02 4.56E-03 1.43E-03 2.35E-02 --E GEN E-Gen. Engine 1,902 100% 1,902 39 0.0033 (3) 2.73E-04 0.0012 (3) 9.90E-05 8.22E-04 (3) 6.80E-05 3.36E-04 (3) 2.78E-05 1.07E-04 (3) 8.88E-06 3.36E-05 (3) 2.78E-06 5.54E-04 (3) 4.58E-05 -- -- --Lifeboat 1 22 100% 22 12 0.0040 (3) 1.14E-06 0.0017 (3) 4.98E-07 1.21E-03 (3) 3.47E-07 5.02E-03 (3) 1.44E-06 3.27E-03 (3) 9.34E-07 3.94E-04 (3) 1.13E-07 3.61E-04 (3) 1.03E-07 1.66E-04 (3) 4.76E-08Lifeboat 2 22 100% 22 12 0.0040 (3) 1.14E-06 0.0017 (3) 4.98E-07 1.21E-03 (3) 3.47E-07 5.02E-03 (3) 1.44E-06 3.27E-03 (3) 9.34E-07 3.94E-04 (3) 1.13E-07 3.61E-04 (3) 1.03E-07 1.66E-04 (3) 4.76E-08Lifeboat 3 22 100% 22 12 0.0040 (3) 1.14E-06 0.0017 (3) 4.98E-07 1.21E-03 (3) 3.47E-07 5.02E-03 (3) 1.44E-06 3.27E-03 (3) 9.34E-07 3.94E-04 (3) 1.13E-07 3.61E-04 (3) 1.03E-07 1.66E-04 (3) 4.76E-08Lifeboat 4 22 100% 22 12 0.0040 (3) 1.14E-06 0.0017 (3) 4.98E-07 1.21E-03 (3) 3.47E-07 5.02E-03 (3) 1.44E-06 3.27E-03 (3) 9.34E-07 3.94E-04 (3) 1.13E-07 3.61E-04 (3) 1.03E-07 1.66E-04 (3) 4.76E-08Total Emissions 4.55E-06 1.99E-06 1.39E-06 5.75E-06 3.74E-06 4.51E-07 4.13E-07 1.90E-07MOB Engine 1 122 100% 122 12 0.0040 (3) 6.39E-06 0.0017 (3) 2.80E-06 1.21E-03 (3) 1.95E-06 5.02E-03 (3) 8.08E-06 3.27E-03 (3) 5.25E-06 3.94E-04 (3) 6.33E-07 3.61E-04 (3) 5.81E-07 1.66E-04 (3) 2.68E-07Total Emissions 6.39E-06 2.80E-06 1.95E-06 8.08E-06 5.25E-06 6.33E-07 5.81E-07 2.68E-07Cement Engine 1 373 100% 373 150 0.0040 (3) 2.45E-04 0.0017 (3) 1.07E-04 1.21E-03 (3) 7.48E-05 5.02E-03 (3) 3.10E-04 3.27E-03 (3) 2.01E-04 3.94E-04(3) 2.43E-05 3.61E-04 (3) 2.23E-05 1.66E-04 (3) 1.03E-05Cement Engine 2 373 100% 373 150 0.0040 (3) 2.45E-04 0.0017 (3) 1.07E-04 1.21E-03 (3) 7.48E-05 5.02E-03 (3) 3.10E-04 3.27E-03 (3) 2.01E-04 3.94E-04(3) 2.43E-05 3.61E-04 (3) 2.23E-05 1.66E-04 (3) 1.03E-05Total Emissions 4.90E-04 2.15E-04 1.50E-04 6.20E-04 4.03E-04 4.86E-05 4.45E-05 2.05E-05Emission Calculation (Maximum Hourly Basis)Criteria Air Pollutant & Greenhouse Gas (CO2e) EmissionsTotal VOC NOXCO SO2PM PM10PM2.5CO2e LeadMaximumPowerRatingPercentPower1AdjustedPowerRatingRunTimeEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRate(kW) (%) (kW) (hr/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) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr)Gen. Engine 1 4,960 60% 2,976 1 0.43 (3) 2.81 8.16 (5) 53.53 0.39 (5) 2.56 0.007 (2) 0.04 0.15 (5) 0.98 0.15 (5) 0.98 0.15 (5) 0.98 696.60 (4) 4,570.04 1.23E-04 (6) 8.10E-04Gen. Engine 2 4,960 60% 2,976 1 0.43 (3) 2.81 8.16 (5) 53.53 0.39 (5) 2.56 0.007 (2) 0.04 0.15 (5) 0.98 0.15 (5) 0.98 0.15 (5) 0.98 696.60 (4) 4,570.04 1.23E-04 (6) 8.10E-04Gen. Engine 3 4,960 60% 2,976 1 0.43 (3) 2.81 8.16 (5) 53.53 0.39 (5) 2.56 0.007 (2) 0.04 0.15 (5) 0.98 0.15 (5) 0.98 0.15 (5) 0.98 696.60 (4) 4,570.04 1.23E-04 (6) 8.10E-04Gen. Engine 4 4,960 60% 2,976 1 0.43 (3) 2.81 8.16 (5) 53.53 0.39 (5) 2.56 0.007 (2) 0.04 0.15 (5) 0.98 0.15 (5) 0.98 0.15 (5) 0.98 696.60 (4) 4,570.04 1.23E-04 (6) 8.10E-04Gen. Engine 5 4,960 60% 2,976 1 0.43 (3) 2.81 8.16 (5) 53.53 0.39 (5) 2.56 0.007 (2) 0.04 0.15 (5) 0.98 0.15 (5) 0.98 0.15 (5) 0.98 696.60 (4) 4,570.04 1.23E-04 (6) 8.10E-04Gen. Engine 6 4,960 0% 0 1 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Gen. Engine 7 4,960 0% 0 1 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Gen. Engine 8 4,960 0% 0 1 0.43 (3) 0.00 8.16 (5) 0.00 0.39 (5) 0.00 0.007 (2) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 0.15 (5) 0.00 696.60 (4) 0.00 1.23E-04 (6) 0.00E+00Total Emissions14.07 267.67 12.79 0.22 4.92 4.92 4.92 22,850.19 4.05E-03E GEN E-Gen. Engine 1,902 100% 1,902 1 0.43 (3) 1.80 9.20 (1) 38.58 3.35 (3) 14.03 0.007 (2) 0.03 0.30 (3) 1.24 0.24 (3) 1.02 0.24 (3) 0.99 696.60 (4) 2,9211.23E-04 (6) 5.18E-04Lifeboat 122 100% 22 1 1.53 (3) 0.07 7.50 (1) 0.36 5.50 (1) 0.26 0.007 (2) 3.15E-04 0.60 (1) 0.03 0.49 (1) 0.02 0.48 (1) 0.02 696.60 (4) 33.21 1.23E-04 (6) 5.89E-06Lifeboat 222 100% 22 1 1.53 (3) 0.07 7.50 (1) 0.36 5.50 (1) 0.26 0.007 (2) 3.15E-04 0.60 (1) 0.03 0.49 (1) 0.02 0.48 (1) 0.02 696.60 (4) 33.21 1.23E-04 (6) 5.89E-06Lifeboat 322 100% 22 1 1.53 (3) 0.07 7.50 (1) 0.36 5.50 (1) 0.26 0.007 (2) 3.15E-04 0.60 (1) 0.03 0.49 (1) 0.02 0.48 (1) 0.02 696.60 (4) 33.21 1.23E-04 (6) 5.89E-06Lifeboat 422 100% 22 1 1.53 (3) 0.07 7.50 (1) 0.36 5.50 (1) 0.26 0.007 (2) 3.15E-04 0.60 (1) 0.03 0.49 (1) 0.02 0.48 (1) 0.02 696.60 (4) 33.21 1.23E-04 (6) 5.89E-06Total Emissions0.29 1.43 1.05 1.26E-03 0.11 0.09 0.09 132.84 2.35E-05MOB Engine 1122 100% 122 1 1.53 (3) 0.41 7.50 (1) 2.01 5.00 (1) 1.34 0.007 (2) 1.77E-03 0.40 (1) 0.11 0.33 (1) 0.09 0.32 (1) 0.09 696.60 (4) 186.67 1.23E-04 (6) 3.31E-05Total Emissions0.41 2.01 1.34 1.77E-03 0.11 0.09 0.09 186.67 3.31E-05Cement Engine 1 373 100% 373 1 1.53 (3) 1.26 7.20 (1) 5.92 5.00 (1) 4.11 0.007 (2) 0.005 0.20 (1) 0.16 0.16 (1) 0.14 0.16 (1) 0.13 696.60 (4) 572.60 1.23E-04 (6) 1.02E-04Cement Engine 2 373 100% 373 1 1.53 (3) 1.26 7.20 (1) 5.92 5.00 (1) 4.11 0.007 (2) 0.005 0.20 (1) 0.16 0.16 (1) 0.14 0.16 (1) 0.13 696.60 (4) 572.60 1.23E-04 (6) 1.02E-04Total Emissions2.51 11.84 8.22 0.011 0.33 0.27 0.26 1,145.20 2.03E-04CMUMOBGENEmission FactorEngine DescriptionEmission FactorEmissionsUnit IDLBEmissionsUnit IDEmission FactorEmission FactorEmission Factor Emission FactorEmission Factor Emission Factor Emission Factor Emission FactorLBMOBCMUEmission FactorEmission FactorEngine DescriptionEmission FactorEmission Factor Emission Factor Emission FactorGENEmission FactorDrilling Rig - updated Sept. 12, 2013Page 4 of 5ENVIRON International CorporationStatoilEastern GOM OCS Air Permitting ProjectMaersk Developer Emission CalculationsEmission Calculation (Maximum Hourly Basis)Hazardous Air Pollutant (HAP) EmissionsBenzene Toluene Xylenes Formaldehyde Acetaldehyde Acrolein Naphthalene 1,3-ButadieneMaximumPowerRatingPercentPower1AdjustedPowerRatingRunTimeEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRateEmissionRate(kW) (%) (kW) (hr/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) (g/kW-hr) Ref (lb/hr) (g/kW-hr) Ref (lb/hr)Gen. Engine 1 4,960 60% 2,976 1 0.0033 (3) 2.17E-02 0.0012 (3) 7.85E-03 8.22E-04 (3) 5.39E-03 3.36E-04 (3) 2.20E-03 1.07E-04 (3) 7.04E-04 3.36E-05 (3) 2.20E-04 5.54E-04 (3) 3.63E-03 -- -- --Gen. Engine 2 4,960 60% 2,976 1 0.0033 (3) 2.17E-02 0.0012 (3) 7.85E-03 8.22E-04 (3) 5.39E-03 3.36E-04 (3) 2.20E-03 1.07E-04 (3) 7.04E-04 3.36E-05 (3) 2.20E-04 5.54E-04 (3) 3.63E-03 -- -- --Gen. Engine 3 4,960 60% 2,976 1 0.0033 (3) 2.17E-02 0.0012 (3) 7.85E-03 8.22E-04 (3) 5.39E-03 3.36E-04 (3) 2.20E-03 1.07E-04 (3) 7.04E-04 3.36E-05 (3) 2.20E-04 5.54E-04 (3) 3.63E-03 -- -- --Gen. Engine 4 4,960 60% 2,976 1 0.0033 (3) 2.17E-02 0.0012 (3) 7.85E-03 8.22E-04 (3) 5.39E-03 3.36E-04 (3) 2.20E-03 1.07E-04 (3) 7.04E-04 3.36E-05 (3) 2.20E-04 5.54E-04 (3) 3.63E-03 -- -- --Gen. Engine 5 4,960 60% 2,976 1 0.0033 (3) 2.17E-02 0.0012 (3) 7.85E-03 8.22E-04 (3) 5.39E-03 3.36E-04 (3) 2.20E-03 1.07E-04 (3) 7.04E-04 3.36E-05 (3) 2.20E-04 5.54E-04 (3) 3.63E-03 -- -- --Gen. Engine 6 4,960 0% 0 1 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Gen. Engine 7 4,960 0% 0 1 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Gen. Engine 8 4,960 0% 0 1 0.0033 (3) 0.00E+00 0.0012 (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 -- -- --Total Emissions1.08E-01 3.92E-02 2.70E-02 1.10E-02 3.52E-03 1.10E-03 1.82E-02 --E GEN E-Gen. Engine 1,902 100% 1,902 1 0.0033 (3) 1.39E-02 0.0012 (3) 5.02E-03 8.22E-04 (3) 3.45E-03 3.36E-04 (3) 1.41E-03 1.07E-04 (3) 4.50E-04 3.36E-05 (3) 1.41E-04 5.54E-04 (3) 2.32E-03 -- -- --Lifeboat 1 22 100% 22 1 0.0040 (3) 1.89E-04 0.0017 (3) 8.30E-05 1.21E-03 (3) 5.79E-05 5.02E-03 (3) 2.40E-04 3.27E-03 (3) 1.56E-04 3.94E-04 (3) 1.88E-05 3.61E-04 (3) 1.72E-05 1.66E-04 (3) 7.94E-06Lifeboat 2 22 100% 22 1 0.0040 (3) 1.89E-04 0.0017 (3) 8.30E-05 1.21E-03 (3) 5.79E-05 5.02E-03 (3) 2.40E-04 3.27E-03 (3) 1.56E-04 3.94E-04 (3) 1.88E-05 3.61E-04 (3) 1.72E-05 1.66E-04 (3) 7.94E-06Lifeboat 3 22 100% 22 1 0.0040 (3) 1.89E-04 0.0017 (3) 8.30E-05 1.21E-03 (3) 5.79E-05 5.02E-03 (3) 2.40E-04 3.27E-03 (3) 1.56E-04 3.94E-04 (3) 1.88E-05 3.61E-04 (3) 1.72E-05 1.66E-04 (3) 7.94E-06Lifeboat 4 22 100% 22 1 0.0040 (3) 1.89E-04 0.0017 (3) 8.30E-05 1.21E-03 (3) 5.79E-05 5.02E-03 (3) 2.40E-04 3.27E-03 (3) 1.56E-04 3.94E-04 (3) 1.88E-05 3.61E-04 (3) 1.72E-05 1.66E-04 (3) 7.94E-06Total Emissions7.58E-04 3.32E-04 2.31E-04 9.58E-04 6.23E-04 7.51E-05 6.89E-05 3.17E-05MOB Engine 1 122 100% 122 1 0.0040 (3) 1.06E-03 0.0017 (3) 4.67E-04 1.21E-03 (3) 3.25E-04 5.02E-03 (3) 1.35E-03 3.27E-03 (3) 8.75E-04 3.94E-04 (3) 1.06E-04 3.61E-04 (3) 9.68E-05 1.66E-04 (3) 4.46E-05Total Emissions1.06E-03 4.67E-04 3.25E-04 1.35E-03 8.75E-04 1.06E-04 9.68E-05 4.46E-05Cement Engine 1 373 100% 373 1 0.0040 (3) 3.27E-03 0.0017 (3) 1.43E-03 1.21E-03 (3) 9.98E-04 5.02E-03 (3) 4.13E-03 3.27E-03 (3) 2.68E-03 3.94E-04 (3) 3.24E-04 3.61E-04 (3) 2.97E-04 1.66E-04 (3) 1.37E-04Cement Engine 2 373 100% 373 1 0.0040 (3) 3.27E-03 0.0017 (3) 1.43E-03 1.21E-03 (3) 9.98E-04 5.02E-03 (3) 4.13E-03 3.27E-03 (3) 2.68E-03 3.94E-04 (3) 3.24E-04 3.61E-04 (3) 2.97E-04 1.66E-04 (3) 1.37E-04Total Emissions6.53E-03 2.86E-03 2.00E-03 8.26E-03 5.37E-03 6.48E-04 5.94E-04 2.74E-04Emission Factor References1. Certification level based on EPA Tier 1 and Tier II standards per 40 CFR 89 or 94.2. Calculation - Based on weight percent sulfur in fuel and assumes 100% oxidation to SO2.3. AP-42 - Section 3.4 for large engines and Section 3.3 for small engines (<600 hp).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. Vendor supplied data at different engine loads. Maximum emission factor for 100%, 75%, and 50% loads.6. EPA publication EPA-454/R-98-006, "Locating and Estimating Air Emissions from Sources of Lead and Lead Compounds," May 1998.Conversions453.6 g/lb, conversion factor2000 lb/ton1.341 hp/kWCMUMOBGENEmissionsUnit IDEmission FactorEmission Factor Emission FactorEmission Factor Emission Factor Emission Factor Emission FactorLBEngine DescriptionEmission FactorDrilling Rig - updated Sept. 12, 2013Page 5 of 5ENVIRON International Corporation