Outer Continental Shelf 

Title V and PSD Permit Application 

DeSoto Canyon 

Drilling Exploration Project 

 

Prepared for: 

Statoil Gulf Services, LLC 

Prepared by: 

ENVIRON International Corporation 

Baton Rouge, Louisiana 

Date: September 2012 

Project Number: 26-27189A 
Outer Continental Shelf Title V and PSD Permit Application 

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Contents 

 Page 

1 Introduction 1-1

2 Process Description 2-1

2.1 The Developer 2-1 

2.2 The Discoverer Americas 2-4 

3 Emission Source Description 3-1

3.1 General Emission Basis Information 3-2

3.1.1 Emission Factor Basis Development 3-2 

3.1.2 Sulfur Compound Emissions 3-3 

3.1.3 Fluoride Emissions 3-3 

3.1.4 Startup, Shutdown, and Maintenance Emissions 3-4 

3.2 Developer Emission Calculation Basis 3-4 

3.2.1 Main Generator Engines 3-5 

3.2.2 Cement Unit Diesel Engines 3-6 

3.2.3 Emergency Generator Engines 3-7 

3.2.4 Lifeboat Engines 3-8 

3.2.5 Fast Rescue Boat Engines 3-9 

3.2.6 Storage Vessels 3-10 

3.2.7 Fugitive Component 3-12 

3.2.8 Support Vessels 3.12 

3.2.8.1 Offshore Support Vessel Engines 3-13 

3.2.8.2 Crew Boat Engines 3-14 

3.2.8.3 Drilling Mud 3-16 

3.3 Discoverer Americas Emission Calculation Basis 3-16 

3.3.1 Main Generator Engines 3-17 

3.3.2 Emergency Generator Engine 3-19 

3.3.3 Emergency Air Compressor Engines 3-20 

3.3.4 Lifeboat Engines 3-21 

3.3.5 Fast Rescue Boat Engines 3-22 

3.3.6 Heaters 3-23 

3.3.7 Storage Vessels 3-24 

3.3.8 Fugitive Components 3-25 

3.3.9 Support Vessels 3-26 

3.3.9.1 Offshore Support Vessel Engines 3-27 

3.3.9.2 Crew Boat Engines 3-28 

3.3.9.3 Drilling Mud 3-30 

3.4 Emergency Operations 3-30 

3.4.1 Relief Wells 3-30 

3.4.2 Diverters 3-31 
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Table of Contents (continued) Page 

4 Regulatory Applicability 4-1

4.1 Prevention of Significant Deterioration 4-1 

4.2 New Source Performance Standards - 40 CFR Part 60 4-2 

4.2.1 Subpart Dc - Standards of Performance for Small Industrial-Commercial- 4-2 

 Institutional Steam Generating Units for Which Construction, Reconstruction, or 

 Modification Commenced After June 9, 1989 

4.2.2 Subpart Kb - Standards of Performance for Volatile Organic Liquid Storage 4-3 

Vessels for Which Construction, Reconstruction, or Modification Commenced After 

July 23, 1984 

4.2.3 Subpart IIII - Standards of Performance for Stationary Compression 4-5 

 Ignition Internal Combustion Engines 

4.2.4 Subpart JJJJ - Standards of Performance for Stationary Spark Ignition Internal 

 Combustion Engines 4-10 

4.3 National Emission Standards for Hazardous Air Pollutants 40 CFR Part 61 4-10 

4.3.1 Subpart J - National Emission Standard for Equipment Leaks of Benzene 4-10 

4.3.2 Subpart V - National Emission Standard for Equipment Leaks 4-11 

4.4 National Emission Standards for Hazardous Air Pollutants for Source Categories 4-11 

4.4.1 Subpart ZZZZ - National Emission Standard for Hazardous Air Pollutants for Stationary 

Reciprocating Internal Combustion Engines 4-11 

4.4.2 Subpart JJJJJJ - National Emission Standards Hazardous Air Pollutants for Industrial, 

Commercial, and Institutional Boilers Area Sources 4-12 

4.5 Control of Emissions from New and In-Use Nonroad Compression Ignition Engines - 

 40 CFR Part 89 4-12 

4.6 Control of Emissions from Marine Compression-Ignition Engines - 40 CFR Part 94 4-13 

4.7 Compliance Assurance Monitoring (40 CFR Part 64) 4-14 

4.8 Chemical Accident Prevention Provisions (40 CFR Part 68) 4-14 

4.9 Protection of Stratospheric Ozone - 40 CFR 82 4-13 

4.9.1 Subpart F - Recycling and Emissions Reduction 4-15 

4.10 Protection of Resources under the Endangered Species Act of 1973 4-15 

4.10.1 Lease Sales 213 and 222 - Central Planning Area 4-16 

4.11 Emissions Sampling Ports, Continuous Monitoring Systems, and Source Testing Plan 4-17 

5 BACT Analysis 5-1

5.1 BACT Analysis Procedure 5-1 

5.2 Summary of BACT Determinations 5-2 

5.2.1 Developer and Discoverer Americas Engines 5-3 

5.2.2 Discoverer Americas Heater 5-4 

5.3. NOx BACT Analysis for Large (<500 hp) Diesel Engines 5-5 

5.3.1 Step 1 - Identify All Control Technologies 5-5

5.3.1.1 Selective Catalytic Reduction (SCR) 5-7 

5.3.1.2 Low NOx Design (LND) 5-7 

5.3.1.3 Ignition Timing Retard (ITR) and Intake Air Coolers (IAC) 5-8 

5.3.1.4 High Injection Pressure (HIP) 5-8 

5.3.1.5 Water Injection (WI) 5-8 
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Table of Contents (continued) Page 

5.3.1.6 Tier 1 or Tier 2 Emission Standards per 40 CFR Part 89 or 40 CFR Part 94 (Tier 1 or 2) 5-8 

5.3.1.7 Turbocharger with Aftercooler 5-9 

5.3.1.8 Exhaust Gas Recirculation (EGR) 5-9 

5.3.1.9 Engine Replacement and Cam Shaft Cylinder Kits 5-10 

5.3.1.10 Fuel-Water Emulsions 5-10 

5.3.1.11 Intake Air Humidification 5-10 

5.3.1.12 Engine Derate 5-10 

5.3.1.13 NOx Adsorbers 5-11 

5.3.1.14 Lean NOx Catalyst (LNC)/Hydrocarbon SCR (HC-SCR) 5-11 

5.3.1.15 CSNOx Emission Abatement System 5-11 

5.3.1.16 Good Combustion Practice (GCP) 5-11 

5.3.1.17 Utilizing a "Newer" Drilling Vessel 5-11 

5.3.2 Step 2 - Eliminate Technically Infeasible Options 5-12 

5.3.2.1 Exhaust Gas Recirculation (EGR) 5-13 

5.3.2.2 Water Injection/Fuel-Water Emulsions/Intake Air Humidification 5-13 

5.3.2.3 Cam Shaft Retrofits 5-14 

5.3.2.4 Engine Derate 5-14 

5.3.2.5 NOx Adsorbers 5-14 

5.3.2.6 Lean NOx Catalyst (LNC)/Hydrocarbon SCR (HC SCR) 5-15 

5.3.2.7 CSNOx Emission Abatement System 5-15 

5.3.2.8 Low NOx Design (LND/Engine Replacement for Developer Main Generator Engines 

and Discoverer Americas Emergency Generator Engine 5-15 

5.3.2.9 Selective Catalytic Reduction (SCR) for Discoverer Americas Main Generator Engines 5-15 

5.3.4 Step 4 - Evaluate Most Effective Control Options and Document Results 5-18 

5.3.4.1 Selective Catalytic Reduction (SCR) for Developer Main Generator Engines 5-18 

5.3.4.2 Selective Catalytic Reduction (SCR) for Developer Emergency Generator Engine 5-21 

5.3.4.3 Selective Catalytic Reduction (SCR) for Discoverer Americas Emergency Generator 

Engine 5-22 

5.3.4.4 Engine Replacement/Tier 2 Emission Standards for Discoverer Americas Main 

Generator Engines 5-23 

5.3.4.5 Engine Replacement/Tier 3 Emission Standards for Developer Emergency Generator 

Engine 5-24 

5.3.4.6 Tier 1 Emission Standards for Discoverer Americas Main Generator Engines and 

Developer Emergency Generator Engine 5-25 

5.3.4.7 Tier 2 Emission Standards for Developer Main Generator Engines and Discoverer 

Americas Emergency Generator Engine 5-26 

5.3.5 Step 5 - Select BACT 5-26 

5.4 NOx BACT Analysis for Small (<500 hp) Diesel Engines 5-26 

5.4.1 Sep 1 - Identify All Control Technologies 5-27 

5.4.2 Step 2 - Eliminate Technically Infeasible Options 5-28 

5.4.2.1 Exhaust Gas Recirculation (EGR) 5-29 

5.4.2.2 Engine Replacement 5-29 

5.4.2.3 Water Injection, Fuel-Water Emulsions, and Intake Air Humidification 5-29 

5.4.2.4 Cam Shaft Retrofits 5-29 

5.4.2.5 Engine Derate 5-29 
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Table of Contents (continued) Page 

5.4.2.6 NOx Adsorbers 5-30 

5.4.2.7 Lean NOx Catalyst (LNC)/Hydrocarbon SCR (HC SCR) 5-30 

5.4.2.8 CSNOx Emission Abatement System 5-30 

5.4.3 Step 3 - Rank Remaining Control Technologies by Control Effectiveness 5-30 

5.4.4 Step 4 - Evaluate Most Effective Control Options and Document Results 5-30 

5.4.5 Step 5 - Select BACT 5-31 

6 Air Quality Impact Assessment 6-1 

6.1 Dispersion Model Selection 6-1 

6.2 Model Application 6-3 

6.2.1 Source Characterization 6-3 

6.2.2 Modeling Scenario 6-4 

6.2.3 Stack Parameters 6-6 

6.2.4 Building Downwash (Prime Algorithm) 6-15 

6.2.5 Receptor Locations 6-16 

6.2.6 Meteorological Data 6-16 

6.3 Project Impact Assessment 6-16 

6.3.1 Criteria Pollutant Concentrations 6-17 

6.4 Class I Air Quality Related Values Analysis 6-18 

6.4.1 Model Selection 6-19 

6.4.2 Modeling Procedures 6-19 

6.4.3 Model Setup and Application 6-19 

6.4.4 Averaging Periods 6-20 

6.4.5 Chemical Transformations 6-20 

6.4.6 Domain and Receptors 6-21 

6.4.7 Emission Rates and Stack Parameters 6-21 

6.4.8 Meteorological Data 6-21 

6.4.9 AQRV Calculation Procedures 6-23 

6.4.10 FLAG 2008 (CALPOST Method 8) 6-24 

6.4.11 Analysis Results 6-24 

6.5 Additional Impacts Assessment 6-26 

6.5.1 Growth Analysis 6-26 

6.5.2 Soil and Vegetarian Impacts 6-26 

6.5.3 Local Visibility Impairment 6-26 

 
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Table of Contents (continued) 

Tables 

3.2-1 Developer Emissions Units 

3.2.1-1 Main Generator Engine Operating Parameters 

3.2.1-2 Main Generator Engine Emission Factors 

3.2.2-1 Cement Unit Engine Operating Summary 

3.2.2-2 Cement Unit Engine Emission Factors 

3.2.3-1 Emergency Generator Engine Operating Summary 

3.2.3-2 Emergency Generator Emission Factors 

3.2.4-1 Lifeboat Engine Operating Summary 

3.2.4-2 Lifeboat Engine Emission Factors 

3.2.5-1 Fast Rescue boat Engine Operating Summary 

3.2.5-2 Fast Rescue boat Engine Emission Factors 

3.2.6-1 Storage Vessel Inventory and Operating Summary 

3.2.7-1 Fugitive Component Emissions 

3.2.7-2 Fugitive Component Emission Factors 

3.2.8.1-1 Offshore Support Vessel Engine Operating Summary 

3.2.8.1-2 Offshore Support Vessel Engine Emission Factors 

3.2.8.2-1 Crew Boat Engine Operating Summary 

3.2.8.2-2 Crew Boat Engine Emission Factors 

3.2.8.3-1 Drilling Mud Operating Summary and Emission Factors 

3.3-1 Discoverer Americas Emissions Units 

3.3.1-1 Main Generator Engine Operating Parameters 

3.3.1-2 Main Generator Engine Emission Factors 

3.3.2-1 Emergency Generator Engine Operating Summary 

3.3.2-2 Emergency Generator Engine Emission Factors 

3.3.3-1 Emergency Air Compressor Engine Operating Summary 

3.3.3-2 Emergency Air Compressor Engine Emission Factors 

3.3.4-1 Lifeboat Engine Operating Summary 

3.3.4-2 Lifeboat Engine Emission Factors 

3.3.5-1 Fast Rescue Boat Engine Operating Summary 

3.3.5-2 Fast Rescue Boat Engine Emission Factors 

3.3.6-1 Hot Oil Heater Operating Summary 

3.3.6-2 Hot Oil Heater Emission Factors 

3.3.7-1 Storage Vessel Inventory and Operating Summary 

3.3.8-1 Fugitive Component Summary 

3.3.8-2 Fugitive Component Emission Factors 

3.3.9.1-1 Offshore Support Vessel Engine Operating Summary 

3.3.9.1-2 Offshore Support Vessel Engine Emission Factors 

3.3.9.2-1 Crew Boat Engine Operating Summary 

3.3.9.2-2 Crew Boat Engine Emission Factors 

3.3.9.3-1 Drilling Mud Operating Summary and Emission Factors 
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Tables (continued) 

4.1-1 PSD Significance Analysis 

4.2-1 Summary of Developer VOL Storage Vessel Subpart Kb Applicability 

4.2-2 Summary of Discoverer Americas VOL Storage Vessel Subpart Kb Applicability 

4.2-3 Summary of Developer Engines Subject to Subpart IIII 

4.2-4 Summary of Discoverer Engines Subject to Subpart IIII 

4.6-1 Discoverer Americas Marine Engine Rule Applicability 

4.6-2 Developer Marine Engine Rule Applicability 

 

5.2.1-1 Summary of BACT Determinations for Developer and Discoverer Americas Engines 

5.3.1-1 EPA RBLSC NOx Control Technologies for Large (>500 hp) Diesel Engines 

5.3.1-2 Other NOx Control Technologies for Diesel Engines 

5.3.2-1 BACT Options Determined to be Technically Infeasible for Large (>500 hp) Diesel 

Engines 

5.3.5-1 Summary of BACT Determinations for Developer and Discoverer Americas Large 

(>500 hp) Diesel Engines 

5.4.1-1 EPA RBLSC NOx Control Technologies for Small (<500 hp) Diesel Engines 

5.4.1-2 Other NOx Control Technologies for Diesel Engines 

5.4.5-1 Summary of BACT Determinations for Small (<500 hp) Diesel Engines on the 

Developer and Discoverer Americas 

6.2.3-1 Developer Point Source Stack Parameters Used in CALPUFF Modeling Analysis 

6.2.3-2 Discoverer Americas Point Source Stack Parameters Used in CALPUFF Modeling Analysis 

6.2.3-3 Volume Source Stack Parameters in Developer and Discoverer Americas Used in CALPUFF 

 Modeling Analysis 

6.2.3-4 Short-Term Emission Rates from Stacks Used in Developer CALPUFF Modeling 

 Analysis 

6.2.3-5 Short-Term Speciated Emission Rates from Stacks Used in Developer CALPUFF 

Modeling Analysis 

6.2.3-6 Long-Term Emission Rates from Stacks Used in Developer CALPUFF Modeling 

Analysis 

6.2.3-7 Long-Term Speciated Emission Rates from Stacks Used in Developer CALPUFF 

Modeling Analysis 

6.2.3-8 Short-Term Emission Rates from Stacks Used in Discoverer Americas CALPUFF 

 Modeling Analysis 

6.2.3-9 Short-Term Speciated Emission Rates from Stacks Used in Discoverer Americas 

CALPUFF Modeling Analysis 

6.2.3-10 Long-Term Emission Rates from Stacks Used in Discoverer Americas CALPUFF 

Modeling Analysis 

6.2.3-11 Long-Term Speciated Emission Rates from Stacks Used in Discoverer Americas 

CALPUFF Modeling Analysis 

6.2.3-12 Short-Term Speciated Emission Rates from Volume Sources Used in Developer and 

Discoverer Americas CALPUFF Modeling Analysis 

6.2.3-13 Long-Term Speciated Emission Rates from Volume Sources Used in Developer and 

Discoverer Americas CALPUFF Modeling Analysis 
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6.3.1-1 Maximum Predicted Class II Concentrations 

6.4-1 Nearest Distance to Class I Area from Proposed Project 

6.4.11-1 Maximum Predicted Class I Concentrations 

6.4.11-2 Predicted Class I Area Deposition Fluxes 

6.4.11-3 Predicted Extinction Change for Breton Wilderness, Method 8, Maersk 

6-4.11-4 Predicted Extinction Change for Breton Wilderness, Method 8, Transocean 

6.4.11-5 Predicted Extinction Change for Breton Wilderness, Method 8, Summary 

6.5.3-1 Level I Developer VISCREEN Analysis Input Parameters 

6.5.3-2 Level I Discoverer Americas VISCREEN Analysis Input Parameters 

6.5.3-3 Level I Developer and Discoverer Americas VISCREEN Analysis Input Parameters 

6.5.3-4 Level 1 Developer VISCREEN Results 

6.5.3-5 Level 1 Discoverer Americas VISCREEN Results 

Figures 

Figure 1: Site Map 

Figure 2: Developer 

Figure 3: Discoverer Americas

Figure 4: CALPUFF Modeling Domain 

Appendices 

Appendix A: Part 71 Forms 

Appendix B: Calculations 

Appendix C: EIS Documentation 

Appendix D: BACT Analysis/Supporting Documentation 

Appendix E: Air Quality Analysis Documentation