Statoil 

Eastern GOM OCS Air Permitting Project

Statoil - Maersk Developer

Welding Activities Emissions Calculations

Parameters

Engine Type Electric - Powered by Rig Engines

Fuel Type Not Applicable

Hours of Operation (days/yr) 180

Maximum Horsepower Not Applicable

Amount of Electrode Used per Day (lbs/day) 1.3

Amount of Electrode Used per Year (lbs/yr) 241.2

Emissions Summary

Emission Factor

(lb/103

 lb of 

electrode used) 1

(lbs/hr) (tpy) lb/yr

81.6 4.6E-03 0.010 19.68

Chromium Compounds 2.53 1.4E-04 3.1E-04 0.61

Chromium VI Compounds 1.88 1.0E-04 2.3E-04 0.45

Cobalt Compounds 0.001 5.6E-08 1.2E-07 2.4E-04

Manganese Compounds 23.2 1.3E-03 2.8E-03 5.60

Nickel Compounds 1.71 9.5E-05 2.1E-04 0.41

Lead Compounds 0.162 9.0E-06 2.0E-05 0.04

Emission Factor References

Sample Calculations

Pounds of electrode (lb/day) x Emission Factor (lb pollutant/1000 lb electrode) / Hours per Day (24 hr/day) = Emissions (lb/hr)

Emissions (lb/hr) x Hours per day (24 hrs/dy) x Hours of Operation (180 days/yr) / 2000 lbs/ton = Emissions (tpy)

1. Emission factors for fumes produced during welding activities are from AP-42, Table 12.19-1 (PM-10 Emission Factors for 

Welding Operations) and Table 12.19-2 (Hazardous Air Pollutant Emission Factors for Welding Operations), 1/95. Emissions of 

fumes are conservatively estimated to allow for use of any electrode type; therefore, emissions are based on the highest 

emission factors per pollutant regardless of electrode type.

Pollutant

Calculated Emission Rates

PM/PM-10/PM2.5

Welding Activities ENVIRON International Corporation
Statoil 

Eastern GOM OCS Air Permitting Project

Statoil - Maersk Developer

Painting Activities Emissions CalculationsParameters

Paint Used (gal/day) 2.12Percent of each Paint Coating 50%Paint Transfer Efficiency for spraying 65%Percent Paint Spray as PM10 70%Percent Paint Spray as PM2.5 25%Thinner Used (gal/day) 1.74Hours of Operation (days/yr) 180

Name Manufacturer % Solids Density (lb/gal) Solids VOC Ethylbenzen e bis(2- ethylhexyl) phthalate Xylene Toluene 2- Propoxy- ethanol

Sigmacover 630 Base PPG Industries 84.4% 12.6 10.6 2.0 0.4 0.4 0.95 -- --Amercoat 335 - Resin 35% 8.51 3.0 -- -- -- 0.26 -- 0.6Amercoat 335 - Cure 84% 9.26 7.8 -- -- -- -- -- 1.9Amercoat 335 (8 parts resin: 1 part cure) 43% 8.59 3.7 1.8 -- -- --

2.0 0.4 0.4 0.9 -- 1.9

Thinner 90-53 PPG Industries 0% 7.43 -- 7.4 0.6 -- 3.3 0.04 -- Thinner 91-92 PPG Industries 0% 7.09 -- 7.1 0.7 -- 3.9 0.04 -- -- 7.4 0.7 -- 3.9 0.04 --

Emissions Summary

Paint Coating Paint Thinner

(lbs/hr) (lbs/hr) (lb/hr) (tpy) (lb/yr)

0.22 -- 0.2 0.48 9570.16 -- 0.2 0.33 6700.06 -- 0.1 0.12 239

0.17 0.5 0.7 1.54 3,0770.03 0.05 0.1 0.18 3660.03 -- 0.03 0.07 1440.08 0.3 0.4 0.79 1,582

-- 0.003 0.003 0.01 13

0.16 -- 0.2 0.35 707

Emission Factor ReferencesSample Calculations

Gallons of paint (gal/day) x VOC Content (lb VOC/gal) / Hours per Day (24 hr/day) = Emissions (lb/hr)Gallons of paint (gal/day) x coating use (50% per coating) x Solids Content (lb solids/gal) x Transfer Efficiency (1 - 0.65) / Hours per Day (24 hr/day) = Emissions (lb/hr)

Emissions (lb/hr) x Hours per day (24 hrs/dy) x Hours of Operation (180 days/yr) / 2000 lbs/ton = Emissions (tpy)

2. Assume half of each surface coating is used throughout the year. Estimate of 65 percent transfer efficiency were obtained from South Coast Air Quality Management District. Bench-scale studies estimate that PM10 emissions from overspray are approximately 70% of total PM 

and PM2.5 emissions are approximately 25% of total PM.

Composition (lb/gal)

Pollutant

VOC

1. Emissions of VOC and HAP based on gallons of paint and thinner used and material safety data sheets for paints and paint thinners. The 

maximum VOC and specific HAPs contents for each (paint and thinner) were determined across the available products.

PPG Industries

Max of Paint Coatings

Max of Paint Thinners

Ethylbenzene

bis(2-ethylhexyl) phthalate

Xylene

Toluene

2-Propoxy-ethanol

Total Painting

Calculated Emission Rates 1

PM 2

PM10 2

PM2.5 2

Painting Activities 
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) 

PAINT Fugitive Painting Emissions 

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 – Insignificant Emissions sources (see IE Form)
GIS 4

IE – FO E GEN ST Standby Generator Fuel Oil Tank 

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 – WELD Maintenance Welding 

 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 484.26 tons/yr VOC 27.65 tons/yr SO2 0.37 tons/yr 

PM-10 9.82 tons/yr CO 63.32 tons/yr Lead 0.01 tons/yr 

Total HAP 1.8 tons/yr 

Single HAP emitted in the greatest amount Xylenes PTE 0.9 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 5900-81 Developer 

 OMB No. 2060-0336, Approval Expires 06/30/2015

Federal Operating Permit Program (40 CFR Part 71)

EMISSIONS UNIT DESCRIPTION FOR VOC EMITTING SOURCES (EUD-2)

A. General Information 

Emissions unit ID _PAINT_____ Description _Fugitive Emissions from Painting Activities_ 

SIC Code (4-digit) __1382__ SCC Code ________ 

B. Emissions Unit Description 

Equipment type Painting with Brush, Roller, and Sprayer Temporary source: ___Yes _X No 

Manufacturer_Not Applicable________ Model No. _ Not Applicable__ 

Serial No. __ Not Applicable__________ Installation date_N/A_/____/________ 

Articles being coated or degreased _Vessel Maintenance Activities_____________ 

Application method _Brush, Roller, Sprayer______________________________________ 

Overspray (surface coating) (%) _35_____ Drying method__N/A__________________ 

No. of dryers __ N/A___ Tank capacity (degreasers) (gal) __ N/A________ 

C. Associated Air Pollution Control Equipment – Not Applicable

Emissions unit ID ___________ Device Type____________________________________ 

Manufacturer ________________________ Model No____________________________ 

Serial No. ______________________________ Installation date ____/____/_________ 

Control efficiency (%) _________.___ Capture efficiency (%) ________.___ 

Air pollutant(s) controlled______________ Efficiency estimation method _______________ 

D. Ambient Impact Assessment – Not Applicable

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 (F) __________._____ Design stack flow rate (ACFM) __________.____ 

Actual stack flow rate (ACFM) _______________ Velocity (ft/sec) ____________._______ 
 EPA Form 5900-81 Developer 

 EUD-2 2

E. VOC-containing Substance Data 

List each VOC-containing substance consumed, processed or produced at the emissions unit that is 

emitted into the air. In the name column, if providing a brand name, include the name of the manufacture; 

if the substance contains HAP, list the constituent HAP. 

Substance 

Name 

(Chemical, 

Brand Name) 

CAS No. Substance 

Type 

Actual 

Usage 

 (gal/yr) 

Max 

Usage 

(gal/day) 

Max 

Usage 

(gal/year) 

VOC 

Content 

(lb/gal) 

Sigmacover 630 

Base 

N/A Surface 

Coating 

382 2.12 

(estimate) 

382 

(estimate) 

2.0 

Amercoat 335 N/A Surface 

Coating 

1.8 

Thinner 90-53 N/A Paint 

Thinner 

313 1.7 

(estimate) 

313 

(estimate) 

7.4 

Thinner 91-92 N/A Paint 

Thinner 

7.1 
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 

1 WELD – Welding Activities X X 

 

 

 
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 PAINT 

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 0.22 0.48 

PM10 N/A 0.16 0.33 

PM2.5 N/A 0.06 0.12 

Volatile Organic Compounds (VOC) N/A 0.7 1.5 

Ethylbenzene N/A 0.1 0.18 100-41-4 

Bis(2-ethylhexyl) phthalate N/A 0.03 0.07 117-81-7 

Xylene N/A 0.4 0.79 1330-20-7 

Toluene N/A 0.003 0.01 108-88-3 

2-Propoxy-ethanol N/A 0.2 0.35 2807-30-9