# Based on a high

- resolution geophysic al survey consisting of frequency enhanced 3

- D seismic, Enhanced Surface

Renderings, (ESR‟s), ESR‟s with amplitudes applied and AUV high

- resolution data, West Boreas F/L

- 2 PLET Sled

- 8120 in

MC 762 appears suitable for the planned activity.

West Boreas Man ifold MFD

- 8100 (MC 762)

West Boreas Manifold MFD

- 8100 in MC 762 will be located near the center of a near

- surface ancient slump valley. There

is no other evidence of seafloor or near

- surface faulting, slumping, amplitude or fluid expulsion features in th e vicinity of

this m anifold. The manifold will not disturb any high

- density areas of deepwater benthic communities.

An Industrial Waste Dump site is identified in MC 806, south of MC 762. This dumpsite consists of drums that have

deteriorated over time. Some of the drums had been dropped outside of the limits of the site and are identified on the

Geologic Features Map (Map 5) of the GEMS report. Within 2

, 000 feet of the m anifold site, there are 19 sonar targets

identified as potential barrels with a 50

- foot recommended avoidance, and 2 sonar targets identified as modern debris

with 100 foot avoidance. The closest target is identified as Target # 665, 406.60 feet southwest of the manifold

.

The manifold will be positioned over 1

, 700 feet east of ATP‟s f lowline and 3450 feet north of Shell‟s Europ a to Mars

Flowlines. The manifold will not interfere with these flowlines. Currently, there are no other flowlines within the vicinity

of the manifold

.

Based on a high

- resolution geophysical survey consisting of frequency enhanced 3

- D seismic, Enhanced Surface

Renderings, (ESR‟s), ESR‟s with amplitudes applied and AUV high

- resolution data, West Boreas Manifold MFD

- 8100 in MC

762 appears suitable for the planned activity.

Arlette C. Nunez

Shallow Hazards Co ordinator

Attached is Shell‟s Waste Barrel Avoidance and Release Response Plan.

B

- F

Pursuant to NTL No. 2008

- G04 the proposed operations covered by this DOCD do not involve operations impacting the

following: Topographic features map, Topographic features statement (shunting), Live bottoms, (Pinnacle Trend) map,

Live bottoms (low relief) map, or potentially sensitive biological features map.

G. Remotely Operated Vehicle (ROV) Monitoring Plan

In accordance with the provisions of NTL 2008

- G06 , Remotely Operated Vehicle Surveys in Deepwater, Mississippi

Canyon Block 807 is located in Grid 13. Grid 1 3 is an area that has adequate ROV survey coverage; therefo re we are

not proposing to run the pre

- and post

- ROV survey in accordance with the NTL.

H. Threatened and Endangered Species Information

There are 5 species of sea turtles that may be found in the Gulf of Mexico (see T able 6.6 below ). No critical habitat for

these species has been designated in the Gulf of Mexico.

# Common Name Scientific Name T/E Status

Hawksbill Turtle Eretmochelys imbricata E

Green Turtle Chelonia mydas T

Kemp's Ridley Turtle Lepidochelys kempii E

Leatherback Turtle Dermochelys coriacea E

Loggerhead Turtle Caretta caretta T



# Table 6.6

– Threatened and Endangered Sea Turtles



# There are 29 species of marine mammals that may be fo und in the Gulf of Mexico (see T able 6.7 below ). Of the species

listed as Endangered, only the Sperm whale is commonly found in the project area. No critical habitat for these species

has been designated in the Gulf of Mexico.

Common Name Scientific Name T/E Status

Atlantic Spotted Dolphin Stenella frontalis

Blainville's Beaked Whale Mesoplodon densirostris

Blue Whale Balaenoptera musculus E

Bottlenose Dolphin Tursiops truncatus

Bryde's Whale Balaenoptera edeni

Clymene Dolphin Stenella clymene

Cuvier's Beaked Whale Ziphius cavirostris

Dwarf Sperm Whale Kogia simus

False Killer Whale Pseudorca crassidens

Fin Whale Balaenoptera physalus E

Fraser's Dolphin Lagenodelphis hosei

Gervais' Beaked Whale Mesoplodon europaeus

Humpback Whale Megaptera novaeangliae E

Killer Whale Orcinus orca

Melon

- headed Whale Peponocephala electra

Minke Whale Balaenoptera acutorostrata

Northern Right Whale Eubalaena glacialis E

Pantropical Spotted Dolphin Stenella attenuata

Pygmy Killer Whale Feresa attenuata

Pygmy Sperm Whale Kogia breviceps

Risso's Dolphin Grampus griseus

Rough

- toothed Dolphin Steno bredanensis

Sei Whale Balaenoptera borealis E

Short

- finned Pilot Whale Globicephala macrorhynchus

Sowerby's Beaked Whale Mesoplodon bidens

Sperm Whale Physeter macrocephalus E

Spinner Dolphin (Long

- snouted) Stenella longirostris

Striped Dolphin Stenella coeruleoalba

West Indian manatee Trichechus manatus E



# Table 6.7

– Threatened and Endangered Marine Mammals



# The EIA found in Section 18 discusses potential impacts and mitigation measures related to threatened and endangered

species.

# I. Archaeological Report

Shell will comply with all conditions of NTL 2005

- G07 , 2011

- Joint

- G01 and guidance from the BOEM.gov website

“Guidance for Compliance with Mitigation 3.20 Avoidance of Archeological Resources.”

J. Air and Water Quality Information

Pursuant to NTL 2008

- G04 the proposed operations covered by this DOCD do not require Shell to provide additional

information relating to air and water quality information. For specific information relating to air and water quality

information please refer to Section 18 of this plan

.

K. Socioeconomic Information

Pursuant to NTL 2008

- G04 the proposed operations covered by this DOCD do not require Shell to provide additional

information relating to air and water quality information. For specific information relating to socioeconomic information

please refer to Section 18 of t his plan

.

# OLYMPUS Host – MARS “B” Development

MISSISSIPPI CANYON BLOCK 807



# Waste Barrel Avoidance and Release

Response in the Mississippi Canyon

Area

Project OLYMPUS Host – MARS “B” Development

Document Title Waste Barrel Avoidance and Release

Response in the Mississippi Canyon Area

Document Number MRB-100-HX-0505-0000002-000

Document Revision REV 2

Version Code Not Applicable

Document Status Issued for Review

EIS Discipline / Document Type Hazard Analysis Report

Originator / Author Robert Kuehn

Classification Restricted

ECCN EAR 99

Issue Date 10/20/10

Revision History is shown on next page

# Document Number -Rev Page 2 of 8

RESTRICTED 

# REVISION HISTORY

Rev # Date of

Issue Issue Description Originator Reviewer Approver

2 10/20/10 Formalized existing

document into

Document Mgmt

program RB Kuehn RB Kuehn Nilesh Popat

Summary

# Document Number -Rev Page 3 of 8

RESTRICTED 

# Contents

PURPOSE ....................................................................................................................... ..... 4

REVISION HISTORY ....................................................................................................... 4

BACKGROUND ................................................................................................................. 4

N ORMAL 

# O PERATIONS 

# ....................................................................................................... 5

D ECONTAMINATION OF 

# E QUIPMENT 

# ................................................................................... 6

# Waste Barrel Avoidance and Release Re sponse in the Mississippi Canyon Area

10/20/10 REV 2

4 of 8 

# Purpose

This document provides expectations and guida nce for avoiding, and responding to a release of

the contents of, a seafloor waste barrel. The pr ocedures below describes Shell’s expectations for

routine barrel avoidance, data management, and response to inadvert ent release of barrel

contents.



# Applicability

This document applies to all ROV, anchor and other operations which could cause a seafloor

barrel rupture.

Changes to this procedure must be approved by BOEMRE. 1



# Revision History

Date Person Revision

12/16/08 RBKuehn Incorporated comments from MMS 2 

# and issued as final.

8/16/10 RBKuehn Incorporated comment from BOEMRE 3 

# to include New Orleans District

manager in the notification of Step 2 of the section Barrel Impact Reporting.

Also revised all relevant references to MMS as BOEMRE

10/20/10 RBKuehn 3⁄4 In Background, added in summary of suspected materials disposed at the

site, based on research of the site in public records.

3⁄4 In section on Equipment Decontamination- Decon Procedure:

o clarified what types of detergents are preferred/allowed, using the

NPDES Vessel General Permit as a guide.

o Expanded on appropriate PPE and other personnel precautions

o Noted a need for secondary containment as appropriate

Significant changes to the text are shown in yellow shade.

3⁄4 Added page numbers and cleaned up format.

3⁄4 Issued as REV 2



# Background

Various projects will be carried out in an area of the Miss issippi Canyon known to contain

barrels of chemical waste.

1 

# Per MMS approval of West Bor eas Supplemental Ex ploration Plan, MS 5231 December 16, 2008

Control No. S-07273, Lease(s) OCS-G07957, Block 762, Mississippi Canyon Area OCS-G07962, Block 806,

Mississippi Canyon Area

2 

# Per MMS approval of West Bor eas Supplemental Ex ploration Plan, MS 5231 December 16, 2008

Control No. S-07273, Lease(s) OCS-G07957, Block 762, Mississippi Canyon Area OCS-G07962, Block 806,

Mississippi Canyon Area

3 

# Per BOEM approval of the Supplement to the Conceptual DWOP for Mars B project, 8/12/10, MS 5220

# Waste Barrel Avoidance and Release Re sponse in the Mississippi Canyon Area

10/20/10 REV 2

5 of 8 • The barrels were discharged in this ar ea in the 1970’s under government approved

permits.

• The content, and its toxicity, of each indivi dual barrel is not known. However, there are

records of a wide range of i ndustrial waste materials that we re disposed in the barrels

including chlorinated hydrocarbons and liquid metal salts. Below is a summary of the

barrel contents based on available records.

1. Metallic sodium and calcium; calcium oxide, sodium oxide, and inert salts. 4



# 2. 80-90% dichlorobutene, 20% organic high-boilers, and 1% quaternary

ammonium salts. “Other wastes produ ced from the manufacture of fungicides

and herbicides”. 5



# • Within the area there are/could be many hundred s of waste barrels. Ma ny of the barrels

may have released their contents over time. However, an unknown numb er of barrels still

look intact, and they may or may not still contai n their original conten t. Also, as some of

the barrels contained metal based solid wast e, some of the barrels that no longer look

intact may still contain some waste.

• Extensive sonar surveys of the area exist and are available for planning purposes.



# Potential Hazards

Although there are no records of any issues rega rding the barrels during the many years of Oil

and Gas operations in the Mississippi Canyon area, the following potential hazards exist:

• Personnel exposure or equipment damage due to adherence of waste chemicals to

recovered subsea equipment

• Equipment damage from sodium exposur e to water (very vigorous reaction).



# Normal Operations

For normal operations, all contractors and Shell employees must meet the following

expectations:

1. Shell’s over-arching policy is to avoid barrel contact.

2. Press releases making any reference to the ch emical waste or barre ls, or any incidents

involving any chemical waste or barrels, will require the ex press written permission from

4 

# EPA Permit Application No. 730D009E from Ethyl Co rp, March 1, 1977, Public Notice April 20, 1977,

5 

# Chapter 5 “Ocean Discharge” in the book Assessing Potentia l Ocean Pollutants, A Report of the Study Panel on Assessing

Potential Ocean Pollutants. National Academy of Sciences, Wash ington DC, 438 pp. This document details DuPont’s application

to dispose of the following at the ocean disposal site

# Waste Barrel Avoidance and Release Re sponse in the Mississippi Canyon Area

10/20/10 REV 2

6 of 8 Shell.

3. All recorded video material is confidential and the property of Shell (standard contract

provision).

If during normal ROV operations there is a discovery of any potential archaeological

resource (i.e., cannot be definitiv ely identified as waste barrel/b arrel remnant, modern debris,

or refuse), any seafloor-disturb ing activities in its proximity, must be stopped, the discovery

must be reported to Dr. Chris Horrell at 504-736-2796, and further in structions must be

obtained before proceeding.

4. Equipment Placement/Stand-off Distance

4.1. A safe stand-off distance from the waste barr els is considered 10m (33ft). Care must be

taken that flexible components (e.g. ROV te ther, anchor lines, seismic cables) are

controlled as well (e.g. don’t drag through a barrel field).

4.2. If a seafloor action will genera te cuttings or debris, increa se the stand-off distance as

needed to avoid debris c ontact with nearby barrels.

4.3. Do not investigate any barrels or remainders of barrels. Remain the minimum stand-off

of 10m (33ft) at all times.

4.4. Survey the anchor/pile/export locations with an ROV to ensure barrel avoidance.

4.5. Record the (approximate) location of any chem ical waste barrel seen, if feasible,

without getting closer than the 10m (33ft) stand-off distance.

5. Contact the Shell EP Company Environmental Du ty Phone for any questions or concerns. 1-

504-390-1330

6. Decontamination of Equipment: In the event of contact with a barrel contents decontaminate

equipment per Decontamination of Equipment below.

7. Make reports of barre l contact/rup ture per Barrel Release Reporting below.



# Decontamination of Equipment

1. General

In the unlikely case that contact is suspected or has been made with any wastes from a barrel,

appropriate action needs to be taken to guarantee the topside safety of personnel handling the

equipment (e.g. ROV, anchor lines, etc).



# It is left solely to the judgment of the Person-in-Charge of the

equipment/vessel to determine if it is necessary to abandon all or part of

the equipment on the sea floor.

2. Decon Procedure

# Waste Barrel Avoidance and Release Re sponse in the Mississippi Canyon Area

10/20/10 REV 2

7 of 8 Based on various factors 6 

# , Shell recommends the following:

2.1. Use the ocean to “wash” the equipment (e.g. fl y an ROV for at least an hour at depth

high enough above sea floor to prevent umbili cal dragging or other disturbance of the

sea floor). For other equipment, provide any movement through the water column

that’s possible, again avoi ding seafloor dragging.

2.2. Retrieve the equipment to the surface, but do not bring onboard if feasible.

2.3. Hose the equipment off befo re retrieving onto the vessel . Use as high a water flow as

is available/safe. CAUTION - detergent/soap may be used BUT in as low a quantity

as practicable to minimize foam. Only non-toxic and phosphate free cleaners and

detergents may be used. Furthermore, cleaner s and detergents should not be caustic or

only minimally caustic and should be biodegradable 7



# .

2.4. Avoid physical contact with the equipment, and keep the equipment off the vessel at

this point..

2.5. Dunk the equipment back in the sea and “w ash” the equipment for approximately 15

minutes.

2.6. Retrieve the equipment to the surface. Before recovering, visually inspect the

equipment, umbilical, cable surfaces with binoculars for signs of corrosion,

discoloration, air reac tion such as fuming/smoking, or any other signs of chemical

contact. Rewash and dunk the equipment as needed.

2.7. Retrieve the equipment onto the back d eck. Monitor the equipment and surrounding

storage area for indications of chemical contamination (corrosion, discoloration, air

reaction such as fuming/smoking, etc). Estab lish secondary containment as necessary

to collect any potentially contaminated drips.

2.8. Only essential personnel should be allowed near the equipment, once retrieved on the

back deck.

2.9. While performing cleaning operations on th e equipment, involving contact with

potentially contaminated surfaces, persona l protective equipment must be worn

including, but not limited to: safety eye goggl es, safety clothing su ch as coverall and

6 Shell assumes, for purposes of this decontamination guidance, that:

• The most toxic material identified in the disposal area’s permit s and other available documents is involved . However Shell ca nnot guarantee

there are not other toxic materials present than t hose identified in the permits and other documents.

• It is assumed that the materials do not chemically interact with the materials of the ROV, its tools and equipment.

7 

# The NPDES General Permit for Discharges Incidental to the Normal Operation of a Vessel provides insight into managing any

washing. Also, EPA provides the following definitions:

“Non-toxic” soaps, cleaners, and detergents means these materials which do not exhibit potentially harmful characteristics as

defined by the Consumer Product Safety Commission regulati ons found at 16 CFR Chapter II, Subchapter C, Part 1500.

“Phosphate Free” soaps, cleaners, and detergents m eans these materials which contain, by

weight, 0.5% or less of phosphates or derivatives of phosphates.

# Waste Barrel Avoidance and Release Re sponse in the Mississippi Canyon Area

10/20/10 REV 2

8 of 8 aprons, Nitrile type chemi cal resistant industrial-safe ty gloves, and PVC boots.

2.10. Wash hands thoroughly and take a shower after performing cl eaning operations on

the equipment.

2.11. Avoid drinking liquids or eating food in the work area.

2.12. If contamination is still suspected, consult with the Shell representatives/management

for further actions including additiona l washing, abandonment on the seafloor,

segregated storage on the boat, wrapping the equipment partially or fully in plastic

sheeting, etc.

2.13. Document all actions an d results in a log.



# Barrel Impact Reporting

1. Initial reporting:

1.1. Equipment operator is to inform the Shell onsite representative and the Shell

operations supervisor on duty.

1.2. The Shell onsite representative or the Shell operations supervisor will call the

SEPCO Environmental Duty Engineer at 1-504-390-1330. As a back-up, call 337-

281-0783 (Rob Kuehn).

• The call should be made at the earliest convenience.

• Be prepared to report the lat/long of the ruptured barrel (not the surface location)

and water depth.

2. The SEPCO Environmental Duty Engineer will call

• the regulatory Affairs Duty Phone 504-782-7823,

• Mr. Broussard of the BOEMRE (504-736-3245) and

• BOEMRE New Orleans District Manager

to report the event. The call should include the lat/long and any circ umstances of note.

3. Follow-up Reporting

The SEPCO Environmental Duty Engineer or Rob Kuehn follows up with an email to

Mr. Broussard of BOEMRE.

The BOEMRE have requested submission of a copy of whatever relevant video is

available for the event period. No dedicated video survey is required for a barrel rupture

(i.e. just be prepared to submit whatever video was obtained as normal part of the

activities). BOEM has agreed we can submit any video after the project is completed.

# Modeling Report

- No modeling of discharges was performed.

# SECTION 8: AIR EMISSIONS

A. Emissions Worksheet and Screening Questions

Screening Questions for DOCD’s Yes No

Is any calculated Complex Total (CT) Emission amount (in tons) associated with

your proposed exploration activities more than 90% of the amounts calculated

using the following formulas: CT = 3400D 2/3 

# for CO, and CT = 33.3D for the other

air pollutants (where D = distance to shore in miles)? X

Do your emission calculations include any emission reduction measures or modified

emission factors? X

Does or will the facility complex associated with your proposed development and

production activities process production from eight or more wells? X

Do you expect to encounter H 2 

# S at concentrations greater than 20 parts per million

(ppm)? X

Do you propose to flare or vent natural gas in excess of the crite ria set forth under

250.1105(a)(2) and (3)? X

Do you propose to burn produced hydrocarbon liquids? X

Are your proposed development and production activities located within 25 miles

from shore? X

Are your proposed development and production activities located within 200

kilometers of the Breton Wilderness Area? X

B. If you answer no to all of the above screening questions from the appropriate table,

provide:

(1) Summary information regarding the peak year emissions for both Plan Emissions and

Complex Total Emissions, if applicable. This information is compiled on the summary form of the

two sets of worksheets. You can submit either these summary forms or use the format below.

You do not need to include the entire set of worksheets.

Air Pollutant P lan

Emission 1



# Amounts

(tons) Calculated

Exemption 2



# Amounts

(tons) Calculated

Complex Total

Emission

Amounts 3



# (tons)

PM

SO

x



# NOx

VOC

CO

1 

# For activities proposed in your EP or DOCD, list the projected emissions calculated from the

worksheets.

2 

# List the exemption amounts for your proposed activities calculated by using the formulas in 30

CFR 5 50.303(d).

3 

# List the complex total emissions as sociated with your proposed activities calculated from the

worksheets

(2) Contact: Sylvia Bellone, (504) 728

- 7215, Sylvia.Bellone@shell.com

Worksheets

– See modeling report

# Shell West Delta OCD

August 16, 2011

September 23, 2011

Mr. Robert Kuehn

Staff Environmental Engineer

Shell Exploration and Production Company (EP-Americas)

One Shell Square, OSS 3422

New Orleans, LA 70161

RE: OCD Modeling Results: Years 2013 through 2060

Shell Mars B Host – Mississippi Canyon Block 807

Dear Mr. Kuehn:

This letter report outlines the results of the O ffshore and Coastal Dispersion (OCD) modeling for

Mars B Host construction, drilling and produc tion operations for Shell Exploration and

Production Company (Shell).

Mars B operations are located in Mississippi Canyon Block 807 at latitude 28° 9' 35.59"

(UTM 3,116,942.13 meters North, Zone 16) and longitude 89° 14' 20.86" (UTM 280,137.86

meters East, Zone 16).

The Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) has

exemption criteria for offshore operations. Th ese criteria are based on the projected highest

annual emissions and the distance of the facility to the closest onshore area

[30 CFR Part 250.303(d)].

Projected potential emissions from operations for PM, VOC, CO, and SO 2 

# meet the exemption

criteria for all modeled years (2011 through 2060); th erefore, an air quality modeling analysis is

not required for these pollutants. However, the projected highest potential emissions of NO

x 

# are

above the exemption threshold for year 2013; therefore, an air quality modeling analysis has been

performed for 2013 NO

x 

# emissions.



# E STIMATED 

# E MISSIONS



# Shell has estimated the potential annual emissions associated with Mars B Host. As previously

stated, the estimated potential annual emissions meet the BOEMRE exemption criteria for all

pollutants except NO

x 

# . Details of the emissions exempti on threshold analysis are presented in

Appendix A.

Potential emissions estimates for NO

x 

# were based on BOEMRE-approved emissions factors.

Table 1 presents a summary of the potential-to-emit for each emission point. 2800 Veterans Blvd., Suite 214 New Orleans, Louisiana 70002 U.S.A.  

# (504)828-5845  

# Fax (504) 828-7858 Offices nationwide  

# trinityconsultants. c o m

# Shell Mars B Host – OCD Modeling – Page 2

September 23, 2011

T ABLE 

# 1. S OURCE 

# P OTENTIAL TO 

# E MIT 1



# Unit Name Model

Input ID Model Input

Emission Rate -

LT/Annual

(tpy) (g/s)

Field Gas Compressor TRB-1001 FGC1 49.85 1.43

Field Gas Compressor TRB-1051 FGC2 49.85 1.43

Turbine Driven Generator Dual Fuel - TRB2101 TurbineNG1 23.83 0.69

Turbine Driven Generator Dual Fuel - TRB2111 TurbineNG2 23.83 0.69

Turbine Driven Generator Dual Fuel - TRB2121 TurbineNG3 23.83 0.69

Turbine Driven Generator Dual Fuel - TRB2131 TurbineNG4 23.83 0.69

Turbine Driven Generator Dual Fuel - TRB2141 TurbineNG5 23.83 0.69

Turbine Driven Generator Dual Fuel - TRB2151 TurbineNG6 23.83 0.69

Turbine Driven Generator Dual Fuel - Diesel TurbineDiesl 195.53 5.62

Essential Generator ZAN-3021 EssentialGen 0.76 0.02

Emergency Generator ZAN-3020 EmergGen 0.76 0.02

Firewater Pump PBE-2331 FirePumpA 0.25 0.01

Firewater Pump PBE-2351 FirePumpB 0.25 0.01

Cold Start Air Compressor SKD-2020 ColdStrtComp 0.02 0.001

Pedestal Crane CRN 2410 PedCrane1 4.07 0.12

Pedestal Crane CRN 2420 PedCrane2 4.07 0.12

Pedestal Crane CRN 2430 PedCrane3 4.07 0.12

ZZZ-500 HP Flare - pilot gas HPFlarPilot1 0.02 0.00

ZZZ-500 HP Flare HPFlareUpset 6.52 0.19

ZZZ-510 Atm(LP) Flare - pilot gas LPFlarePilot 0.01 0.0002

ZZZ-510 Atm (LP) Flare LPFlareUpset 0.52 0.01

Cement Unit- Cat C15 CementUnit1 16.88 0.49

Cement Unit- Cat C15 CementUnit2 16.88 0.49

Misc small, temporary diesel engines (welding

machines, air compressors etc) MISC 26.46 0.76

Installation and support vessels PseudoVessls 1729.41 49.75

1 Model input emission rates are based on emissions information provided by Mr. Robert Kuehn (Shell) via ftp to Ms.

Sharon Killian (Trinity) sent on September 21, 2011 file name Mars B Host DOCD AQ 092111_Master.xls

.

# Shell Mars B Host – OCD Modeling – Page 3

September 23, 2011



# M ODELING 

# M ETHODOLOGY



# Modeled emission rates (grams/second) were deri ved from the potential annual emission rate of

each source for the annual and one-hour averaging periods for NO 2 

# . Note that while the

exemption criteria are based on NO

x 

# emissions, the modeling significance level (MSL) and the

National Ambient Air Quality Standard (NAAQS) is based on emissions of NO 2 

# [30 CFR Part 250.303(e)]. All emissions of NO

x 

# were assumed to be equal to NO 2 

# for modeling

purposes.

Air Quality Model

The latest version of the OCD Model (Version 5.0, dated 05/16/2005) was used to assess the

impacts of NO

x 

# emissions along the Louisiana and Mississippi shoreline. The objective of the

analysis was to determine if the impacts fro m operations at Mars B Host would exceed the

MSLs 2 

# outlined in 30 CFR 250.303(e).

On February 9, 2010, 3 the US EPA established a new 1-hour NAAQS of 100 ppb for NO 2



# . However, the final rules promulgating the 1-hour NO 2 

# NAAQS did not include an MSL for the

one-hour averaging period. Therefore, on June 29, 2010, EPA proposed an interim 1-hour

Significant Impact Level (SIL) of four ppb for NO 2 

# . This interim standard is being used as a

screening tool for completing the required air quality analyses for the new 1-hour NO 2 

# NAAQS

under the Prevention of Significant Deterioration (PSD) program. 4

The interim SIL is currently not included in 30 CFR 250.303(e). However, because BOEMRE

has requested a comparison of the air emissions modeling analysis to the interim 1-hour NO 2 

# SIL,

Shell has assessed modeled impacts against the 1-hour NO 2 

# interim SIL, in addition to the

currently established annual NO 2 

# SIL outlined in 30 CFR Part 250.303(e) . 5

If the modeling analysis indicates that the interim NO 2 

# 1-hour SIL is exceeded, Shell will

determine if the emissions from activities combin ed with the nearest representative onshore NO 2



# monitored concentrations exceed the NO 2 

# 1-hour NAAQS. 6 If the modeling analysis indicates

that the emissions from activities combined with the nearest representative onshore NO 2



# monitored concentrations do not exceed the NAAQS, the emissions will not significantly affect

2 Modeling Significance Level (MSL ) and Significant Impact Level (SIL) are used interchangeably.

3 See 75 Fed. Reg. 6474 and 75 Fed. Reg. 35520.

4 Based on U.S. EPA Memorandum from Stephen D. Page to Regional Air Division Directors titled, “Guidance

Concerning the Implementation of the 1-hour NO 2 

# NAAQS for the Prevention of Significant Deterioration Program,” June 29, 2010.

5 Based on conversation between Ms. Holli Ensz (BOEMRE) and Mr. Bill Bruscino (Trinity) on March 7, 2011.

6 Based on conversation between Mr. Dirk Herkhof (BOEMR E) and Mr. Bill Bruscino (Trinity) on March 31, 2011.

# Shell Mars B Host – OCD Modeling – Page 4

September 23, 2011

the air quality of an onshore area or a State in accordance with30 CFR 250.303(f). Additionally,

BOEMRE would not require a Best Available Control Technology (BACT) analysis under

30 CFR 250.303(h). 7

Based on the above requirements, the ambient m odeled concentrations resulting from emissions

generated from an offshore facility are compar ed to the SIL and NAAQS as shown in Table 2

below.

T ABLE 

# 2. A PPLICABLE 

# NAAQS AND 

# S IGNIFICANT 

# I MPACT 

# L EVELS



# Pollutant Averaging Period SIL

(  g/m 3 

# ) NAAQS

(  g/m 3 

# )

NO 2 

# Annual 1 100

1-hour 7.5 8 

# 188 9



# Source Parameters and Emission Rates

Shell estimated potential annual emissions from em ission sources associated with Mars B Host.

It was determined that NO

x 

# emissions from Mars B Host operations in 2013 exceeded the

exemption criteria of 30 CFR Part 250.303(d). Therefore, Shell has conducted an air quality

modeling analysis for potential NO 2 

# emissions for 2013. Modeled emission rates in grams per

second were derived from the annual emission rate of each source (tons per year) for the 1-hour

and annual averaging periods. 10



# As per previous BOEMRE guidance, support v essel emission sources may be co-located at the

centroid 11 

# of the operational area. Since Shell does not currently have stack parameter data

specific to support vessels, and since the distance of the operational area from the shoreline is

large relative to the distances in between th e emission sources, Shell utilized a “pseudo-point 12 

# ”

7 Ibid.

8 Based on 4ppb at normal atmospheric pressure and temperature.

9 Based on 100ppb at normal atmosphe ric pressure and temperature.

10 Based on conversation between Ms. Holli Ensz (BOEMRE) and Mr. Bill Bruscino (Trinity) on March 7, 2011,

BOEMRE is requesting that applicants supply the 1-hour modeling results obtained from the annual NO 2 

# modeling analysis. Based

on this guidance, the annual and 1-hour NO 2 

# modeling analysis results are based on the annual average emission rate for each

emission source.

11 It is assumed that the set of coordinates provided by Sh ell represent the coordinates for the center of the platform.

12 Conservative default values.

# Shell Mars B Host – OCD Modeling – Page 5

September 23, 2011

parameters approach. This approach conser vatively models operational activities for which

actual stack parameter data are not available, as previously approved by BOEMRE on similar

modeling projects:

 Source location:

o Latitude = 28° 9’ 35.59” North

o Longitude = 89° 14’ 20.86” West

 Stack Velocity 13 

# = 0.001 m/s

 Stack Diameter 14 

# = 0.001 m

 Stack Exit Temperature 15 

# = 500° F

For emission sources other than the support vessels, the air quality modeling was based on

source-specific stack parameter data. The emi ssion-point modeled source parameters for all

sources are presented in Table 3.

13 The stack velocity and stack diamet er are based on previous guidance pr ovided by BOEMRE and represent the

guidance typically provide d by state air regulatory agencies (e.g., Texa s Commission on Environmental Quality [TCEQ]) for

modeling fugitive sources in a repr esentative manner by limiting the in fluence of stack-tip downwash.

14 Ibid.

15 Since all NO

x 

# -emitting sources are combustion-related, Shell propos es a conservative exit temperature of 500° F to

account for buoyancy-induced dispersion.

# Shell Mars B Host – OCD Modeling – Page 6

September 23, 2011

T ABLE 

# 3. M ODEL 

# I NPUT 

# S TACK 

# P ARAMETERS 16



# Source ID Location 1 

# Stack

Height Exit

Temperature Exit

Velocity Stack

Diameter Dev of

Stack

Angle X (km) Y (km) (m) (K) (m/s) (m)

FGC1 510.098 299.407 68.6 769 6.75 2.44 0

FGC2 510.098 299.407 68.6 769 6.75 2.44 0

TurbineNG1 510.084 299.391 56.7 797 17.7 1.07 45

TurbineNG2 510.084 299.39 56.7 797 17.7 1.07 45

TurbineNG3 510.084 299.388 56.7 797 17.7 1.07 45

TurbineNG4 510.085 299.386 56.7 797 17.7 1.07 45

TurbineNG5 510.084 299.396 56.7 797 17.7 1.07 45

TurbineNG6 510.084 299.393 56.7 797 17.7 1.07 45

TurbineDiesl 510.085 299.386 56.7 797 17.73 1.07 45

EssentialGen 510.091 299.38 51.5 755 56.6 0.30 90

EmergGen 510.091 299.381 51.5 755 56.6 0.30 90

FirePumpA 510.092 299.377 38.4 740 73.23 0.20 90

FirePumpB 510.108 299.378 38.4 740 73.23 0.20 90

ColdStrtComp 510.088 299.383 49.1 755 57.02 0.09 0

PedCrane1 510.086 299.396 74.4 740 73.23 0.20 90

PedCrane2 510.109 299.407 74.4 740 73.23 0.20 90

PedCrane3 510.112 299.386 71.9 740 73.23 0.20 90

HPFlarPilot1 510.093 299.41 93.9 1273 20 0.06 45

HPFlareUpset 510.093 299.41 198.7 1273 20 24.27 45

LPFlarePilot 510.093 299.41 93.9 1273 20 0.06 45

LPFlareUpset 510.093 299.41 112.2 1273 20 3.96 45

CementUnit1 510.094 299.574 49.4 632 39.86 0.20 45

CementUnit2 510.094 299.574 49.4 632 39.86 0.20 45

MISC 510.094 299.574 6.1 533 0.001 0.001 0

PseudoVessls 510.094 299.574 6.1 533 0.001 0.001 0

16 For each flare, equivalent stack heights and stack diameters have been calcu lated to account for the buoyancy flux from

the flares that contribute to the plume based on SCREEN3 User’s Guide ( http://www.azdeq.gov/envir on/air/download/modeling.pdf )

. The equivalent stack parameter calculations also incor porate the heat release from the flares (MMBtu/hr).See Figure 1-3See Figure 1-2See Figure 1-2See Figure 1-3Legend:= Receptor= Mars BFigure 1-1. AREAMAP –RECEPTORLOCATIONSShell Offshore, Inc.Mars B Host– Mississippi CanyonShell Mars B HostOperationsFigure 1-2. AREAMAP–RECEPTORLOCATIONSShell Offshore, Inc.Mars B Host– Mississippi CanyonShell Mars B HostOperationsFigure 1-3. AREAMAP -RECEPTORLOCATIONSShell Offshore, Inc.Mars B Host– Mississippi CanyonShell Mars B HostOperations

# Shell Mars B Host – OCD Modeling – Page 10

September 23, 2011

Meteorological Data

The OCD model requires both over-land and over-w ater meteorological data. The following

meteorological datasets were used for the air qua lity modeling analyses to determine the potential

impacts of the operations at Mars B Host on onshore receptors:

 Water temperature, over-water air temperature, over-water dew point temperature, overwater wind speed, and over-water wind dir ection from Station 42040 – Luke Offshore

Test Platform, an off-shore buoy operated by the National Data Buoy Center (NDBC).

 Over-land surface observations of key meteorological variables from the Patterson, LA

National Weather Service (NWS) station.

 Upper air observations of key meteorological variables from the Slidell, LA NWS

station.

The above data sources were selected for this analysis because:

 Station 42040 is located at a distance of 95.69 miles from the location of the West Delta

platform. While data is available from NDBC for other stations located relatively closer

to the location of operations, it is proposed to use the data from Station 42040 as it is the

most complete and representative of the over-w ater conditions that prevail at the location

of operations.

For example Station BURL1 is located closest to the location of operations at a distance

of 52.82 miles. However, this station is almo st at the edge of the Mississippi River delta

and, due to its proximity to land, the data from it will not be as representative of the overwater conditions that prevail at the location of operations as Station 42040. Similarly,

other offshore NDBC stations located relativel y closer to the location of operations do

not have complete, representative, or r ecent years data available (2000 onwards).

 Slidell, (LA) NWS station is the closest upper air meteorological station providing

reliable data.

 Patterson (LA) NWS is the closest surface mete orological station providing reliable data.

The data sources presented above have been selected in accordance with BOEMRE guidance,

as provided in the Five-Year Meteorological Datasets for CALMET/CALPUFF and OCD5

Modeling of the Gulf of Mexico Region (July 2008). 17 

# According to Section 4.1 of this

document, OCD Group 5a must use over-water data from Buoy 42040, surface onshore data

from the Patterson NWS station, and upper-air data from Slidell NWS station. Since the

location of Mars B Host qualifies as part of OCD Group 5a, Shell is using the above

meteorological data.

Shell used meteorological data for five consecutiv e years (2000 through 2004, inclusive), in this

air quality modeling analysis. The over-water and over-land meteorological datasets for the MET

17 Five-Year Meteorological Datasets for CALMET/CALPUFF and OCD5 Modeling of the Gulf of Mexico Region, U.S.

Department of the Interior, Minerals Manage ment Service, Gulf of Mexico OCS Region (July 2008).

# Shell Mars B Host – OCD Modeling – Page 11

September 23, 2011

stations above were the most complete to use fo r the modeling analysis. This decision is based

on a modeling protocol previously submitted to BOEMRE by Shell for a similar modeling

project.

Model runs were performed usi ng over-water mixing heights of 300, 600, and 900 meters for

years 2000 through 2004, inclusive, in accordance with BOEMRE guidance on previous similar

modeling projects. Over-land meteorologi cal data was processed using the USEPA

Meteorological Preprocessor for Regulatory Models (MPRM).

Missing elements in the datasets were ac counted for using EPA-recommended procedures. 18



# Several methods were used to repl ace missing over-water data, including:

 Linear interpolation was used to obtain missing wind speed values.

 A unit vector average was used to substitute for a single missing wind direction value.

 Two- to ten-hour periods of missing wind sp eed and direction data were subjectively

filled based on the persistent weat her pattern in the surrounding area.

Meteorological data files are included as Attachment B in electronic format (attached CD).

Receptor Locations and Land-Mass Configuration

A series of 100 discrete receptors spaced three m iles apart were placed along the Louisiana and

the Mississippi (Gulf Coast) shorelines closest to the Mars B Host location. Additionally, two

receptors were placed in the Class I Breton Wilderness Area (Louisiana) and five receptors were

placed on the Chandeleur Islands (located within the Breton Wilderness Area) to assess impacts

on federal Class 1 Areas. This is consistent with previous guidance provided by BOEMRE for

similar modeling projects for offshore operations.



# M ODEL 

# O PTIONS



# The OCD model options are listed in the mode ling input file (included on the CD in

Attachment B). All sources modeled in this analys is are considered to be point sources. Because

the Gulf Coast area of concern is situated at sea level, no terrain features were considered

(i.e., simple terrain only).



# M ODELING 

# R ESULTS



# A review of the OCD modeling results indicates th at operations at Mars B Host do not exceed the

SIL for the NO 2 

# annual averaging period. The results for the Breton receptors also demonstrate

that the Mars B Host operations do not exceed the MSL or the Class I PSD Increment for the

annual NO 2 

# standard. However, the maximum mode led concentrations exceed the respective

SILs for the

18 Missing Data Procedures for Substituting Values for Mi ssing NWS Meteorological Data for Use in Regulatory Air

Quality Models, EPA SCRAM, July 7, 1992.

# Shell Mars B Host – OCD Modeling – Page 12

September 23, 2011

1-hour averaging period for NO 2 

# for the Breton receptors as well as for the entire region.

The results also indicate that the maximum mode led concentrations for the 1-hour averaging

period for NO 2 

# combined with the nearest representative onshore NO 2 

# monitored concentrations

do not exceed the NO 2 

# 1-hour NAAQS for the Breton receptors as well as for the entire region. 19



# Table 4 presents the summarized results of the thr ee-year average of the 98 percentile of the daily

maximum concentration of NO 2 

# monitored at the Kenner monitoring station. Kenner is the

closest station to the receptor set w ith representative monitoring data.

T ABLE 

# 4. M ONITORING 

# S TATION 

# D ATA 20



# 98% Daily Max ppm (μg/m 3 

# )

2007 0.055 103.48

2008 0.048 90.31

2009 0.048 90.31

Average 0.050 94.70

Other tables and attachments in this report include:

 Table 5 presents the summarized results from the modeling analysis performed for

operations at Mars B Host for the Breton Wilderness Class I area.

 Table 6 presents the summarized results for the entire modeled region.

 OCD modeling output files are included as Attachment B in electronic format (attached

CD).

 A concentration table containing results for each receptor from each model run is

presented as Attachment C.

 Attachment D contains concentration table results specifically for each receptor in the

Breton Wilderness Class I area.

19 Based on modeling protocol submitted for Shell’s West Bor eas operations by Mr. Bill Bruscino (Trinity) to Mr. Dirk

Herkhoff (BOEMRE) on April 4, 2011.

20 Monitoring station data was obtained from the LDEQ website for the most recent 3 years for hourly concentrations of

NO 2



# .

# Shell Mars B Host – OCD Modeling – Page 13

September 23, 2011

T ABLE 

# 5. M AXIMUM 

# M ODELED 

# C ONCENTRATIONS FOR ALL 

# B RETON 

# R ECEPTORS

Pollutant Averaging

Period Maximum

Modeled

Concentration

(μg/m 3 

# ) Modeling

Significance

Level

(μg/m 3 

# ) Significant? Class I

PSD

Increment

(μg/m 3 

# ) Is Model

over PSD

Increment

level? 98%

Daily

Max

(3-yr avg)

(μg/m 3 

# ) Combined

Concentration

(μg/m 3 

# ) NAAQS

(μg/m 3 

# ) NAAQS

Exceeded

?

NO 2 

# Annual 0.10 1 No 2.5 No

94.70 -- 100 No

1-hr 16.74 7.5 Yes

-- -- 111.44 188 No



# Since the modeled annual NO 2 

# concentrations for the Breton Wild erness Class I area are less than

the significant impact level for the NO 2 

# annual averaging period, no further action is required.

Additionally, for the modeled hourly NO 2 

# concentrations, when comb ined with an appropriate

background monitored value, are below the NO 2 

# 1-hour-NAAQS, no further action is required.

T ABLE 

# 6. M AXIMUM 

# M ODELED 

# C ONCENTRATIONS FOR THE 

# E NTIRE 

# R EGION



# Pollutant Averaging

Period Receptors Maximum

Modeled

Concentration

(μg/m 3 

# ) Modeling

Significance

Level

(μg/m 3 

# ) Significant? 98%

Daily

Max

(3 year

average)

(μg/m 3 

# ) Combined

Concentration

(μg/m 3 

# ) NAAQS

(μg/m 3 

# ) NAAQS

Exceeded?

NO 2 

# Annual 1 through

107 0.18 1.0 No N/A -- 100 No

1-Hour 1 through

107 29.46 7.5 Yes 94.70 124.16 188 No



# OCD M ODELING 

# C ONCLUSIONS



# Since the modeled annual NO 2 

# concentrations for the entire regi on are less than the SIL for the

NO 2 

# annual averaging period, no further action is required. Additionally, for modeled hourly

NO 2 

# concentrations, when combined with an a ppropriate background monitored value, are below

the NO 2 

# 1-hour-NAAQS, no further action is required.

# Shell Mars B Host – OCD Modeling – Page 14

September 23, 2011

Thank you for the opportunity to provide this evaluation. Please feel free to call me at

(504) 828-5845 with any questions or comments.

Sincerely,

TRINITY CONSULTANTS

Sharon Killian

Principal Consultant

Enclosures

# A TTACHMENT 

# A: S OURCE 

# D OCUMENTATION

Emissions Calculations and Threshold Limit EvaluationDOCD AIR QUALITY SCREENING CHECKLISTCOMPANYShell Offshore IncAREAMC 807BLOCKMC 807LEASEMC 807PLATFORMMars B HostWELLDVA wells 1-24COMPANY CONTACTSylvia BelloneTELEPHONE NO.504-728-7215REMARKSMars B Olympus Construction, Production and Onboard Rig DrillingLEASE TERM PIPELINE CONSTRUCTION INFORMATION:YEAR NUMBER OFTOTAL NUMBER OF CONSTRUCTION DAYSPIPELINES20102011201220132014201520162017201820192020

# AIR EMISSION CALCULATIONS

COMPANY AREA BLOCK LEASE PLATFORM WELL

Shell Offshore Inc MC 807 MC 807 MC 807 Mars B Host DVA wells 1-24



# Emitted Substance

Year TPY

PM SOx NOx VOC CO

2012 0.16 0.09 5.48 0.16 1.19

2013 59.76 33.74 2249.16 89.07 629.53

2014 29.31 18.67 1995.15 139.15 990.78

2015 17.52 11.91 1589.71 126.98 902.33

2016-2024 17.14 11.69 1576.58 126.59 899.46

2025-2060 16.49 11.32 1554.36 125.92 894.61

Allowable 1764.90 1764.90 1764.90 1764.90 47972.92AIR EMISSION COMPUTATION FACTORSFuel Usage Conversion FactorsNatural Gas Turbines Natural Gas Engines Diesel Recip. Engine REF. DATESCF/hp-hr 9.524 SCF/hp-hr 7.143 GAL/hp-hr 0.0483AP42 3.2-1 4/76 & 8/84Equipment/Emission Factorsunits PM SOx NOx VOC CO REF. DATENG Turbines gms/hp-hr 0.00247 1.3 0.01 0.83AP42 3.2-1& 3.1-1 10/96NG 2-cycle leangms/hp-hr0.00185 10.9 0.43 1.5AP42 3.2-1 10/96NG 4-cycle leangms/hp-hr0.00185 11.8 0.72 1.6AP42 3.2-1 10/96NG 4-cycle richgms/hp-hr0.00185 10 0.14 8.6AP42 3.2-1 10/96Diesel Recip. < 600 hp.gms/hp-hr 1 0.1835 14 1.12 3.03AP42 3.3-1 10/96Diesel Recip. > 600 hp.gms/hp-hr 0.32 0.1835 11 0.33 2.4AP42 3.4-1 10/96Diesel Boilerlbs/bbl 0.084 0.3025 0.84 0.008 0.21AP42 1.3-12,14 9/98NG Heaters/Boilers/Burners lbs/mmscf 7.6 0.593 100 5.5 84P42 1.4-1, 14-2, & 147/98NG Flareslbs/mmscf0.593 71.4 60.3 388.5AP42 11.5-1 9/91Liquid Flaringlbs/bbl 0.42 6.83 2 0.01 0.21AP42 1.3-1 & 1.3-3 9/98Tank Vaporslbs/bbl0.03E&P Forum 1/93Fugitiveslbs/hr/comp.0.0005API Study 12/93Glycol Dehydrator Ventlbs/mmscf6.6La. DEQ1991Gas Ventinglbs/scf0.0034Sulfur Content Source Value UnitsFuel Gas3.33 ppmDiesel Fuel0.05 % weightProduced Gas( Flares) 3.33 ppmProduced Oil (Liquid Flaring) 1 % weightDiesel fuel intended for locomotive, marine and non-road engines andequipment is required to meet the Low Sulfur Diesel fuel maximumspecification of 500 ppm sulfur in 2007, per EPA regulation. Diesel fuels withhigher sulfur are not available. http://www.clean-diesel.org/nonroad.htmlAIR EMISSIONS CALCULATIONSCOMPANYAREAPurposeBLOCKLEASE PLATFORM WELLCONTACTPHONE REMARKSShell Offshore IncMC 807MC 807 MC 807 Mars B Host DVA wells 1-24 Sylvia Bellone 504-728-7215 Mars B Olympus Construction, Production and Onboard Rig DrillingOPERATIONSEQUIPMENTRATING MAX. FUELACT. FUEL RUN TIMEMAXIMUM POUNDS PER HOURESTIMATED TONSDiesel EnginesHP GAL/HR GAL/DNat. Gas EnginesHP SCF/HR SCF/DBurnersMMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC CODRILLINGNO ACTIVITYDrillingPlatform Rig(all rig power comes from Platform power)NO ACTIVITYPIPELINEINSTALLATIONNO ACTIVITYFACILITYSurvey / Support VesselInstall 2qt 8” WBFlowlines / Manifold13,000 627.9 15069.60 24 30 9.16 5.25 314.98 9.45 68.72 0.16 0.09 5.48 0.16 1.19INSTALLATIONPRODUCTIONNO ACTIVITY2012 YEAR TOTAL9.16 5.25 314.98 9.45 68.72 0.16 0.09 5.48 0.16 1.19EXEMPTION CALCULATION DISTANCE FROM LAND IN MILES1764.90 1764.90 1764.90 1764.90 47972.9253.0AIR EMISSIONS CALCULATIONSCOMPANYAREABLOCKLEASEPLATFORMWELLCONTACT PHONE REMARKSShell Offshore IncMC 807MC 807 MC 807Mars B Host DVA wells 1-24Sylvia Bellone504-728-7215Mars B Olympus Construction,Production and Onboard RigDrillingOPERATIONSEQUIPMENTPurposeRATINGMAX. FUEL% Utilization(Load Factor)ACT. FUELRUN TIMEMAXIMUM POUNDS PER HOURESTIMATED TONSDiesel EnginesHP GAL/HR GAL/DNat. Gas EnginesHP SCF/HR SCF/DBurners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC CODrillingPlatform RigNO ACTIVITYFACILITYTug Transport piles to site 6000 289.8 100% 6955.20 24 3 4.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14INSTALLATIONTug Transport piles to site 6000 289.8 100% 6955.20 24 3 4.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14TugPiles transport tugs and bargesreturn to port6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76TugPiles transport tugs and bargesreturn to port6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76Balder: Main EnginesMobilize piles installation vessel toMC-810 and preparations beforework begins236281141.2324100%27389.5824416.65 9.55 572.48 17.17 124.91 0.80 0.46 27.48 0.82 6.00Balder: DP EnginesMobilize piles installation vessel toMC-810 and preparations beforework begins347331677.6039100%40262.4924424.48 14.04 841.55 25.25 183.61 1.18 0.67 40.39 1.21 8.81Union Manta: Propulsion EnginesMobilize piles installation vessel toMC-810 and preparations beforework begins20000966100%23184.0024414.10 8.08 484.58 14.54 105.73 0.68 0.39 23.26 0.70 5.07Union Manta: Ships Service GeneratorMobilize piles installation vessel toMC-810 and preparations beforework begins120057.96100%1391.042440.85 0.49 29.07 0.87 6.34 0.04 0.02 1.40 0.04 0.30workbeginsBalder: DP EnginesInstall Piles347331677.6039100%40262.4924924.48 14.04 841.55 25.25 183.61 2.64 1.52 90.89 2.73 19.83Balder: Crane EngineInstall Piles33115.9873100%383.702490.73 0.13 10.21 0.82 2.21 0.08 0.01 1.10 0.09 0.24Union Manta: Propulsion EnginesInstall Piles20000966100%23184.0024914.10 8.08 484.58 14.54 105.73 1.52 0.87 52.33 1.57 11.42TugInstall Piles6000289.8100%6955.202494.23 2.43 145.37 4.36 31.72 0.46 0.26 15.70 0.47 3.43Balder: Main EnginesDe-mobilize piles installation vesselfrom MC-810236381141.7154100%27401.1724216.66 9.55 572.73 17.18 124.96 0.40 0.23 13.75 0.41 3.00Balder: DP EnginesDe-mobilize piles installation vesselfrom MC-810347331677.6039100%40262.4924224.48 14.04 841.55 25.25 183.61 0.59 0.34 20.20 0.61 4.41Union Manta: Propulsion EnginesDe-mobilize piles installation vesselfrom MC-81020000966100%23184.0024214.10 8.08 484.58 14.54 105.73 0.34 0.19 11.63 0.35 2.54Union Manta: Ships Service GeneratorDe-mobilize piles installation vesselfrom MC-810120057.96100%1391.042420.85 0.49 29.07 0.87 6.34 0.02 0.01 0.70 0.02 0.15Union Manta: Propulsion EnginesSurvey as-installed piles20000966100%23184.0024214.10 8.08 484.58 14.54 105.73 0.34 0.19 11.63 0.35 2.54TugTransport tendons and tendonsupport buoys to site6000289.8100%6955.202434.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14TugTransport tendons and tendonsupport buoys to site6000289.8100%6955.202434.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14TugTransport tendons and tendonsupport buoys to site6000289.8100%6955.202434.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14TugTransport tendons and tendonsupport buoys to site6000289.8100%6955.202434.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14TugTendons and tendon support buoystransport tugs and barges return toport6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76TugTendons and tendon support buoystransport tugs and barges return toport6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76Tendons and tendon support buoysTugtransport tugs and barges return toport6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76TugTendons and tendon support buoystransport tugs and barges return toport6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76Balder: Main EnginesMobilize facility installation vessel toMC-810 and preparations beforework begins236381141.69608100%27400.7124416.66 9.55 572.72 17.18 124.96 0.80 0.46 27.49 0.82 6.00Balder: DP EnginesMobilize facility installation vessel toMC-810 and preparations beforework begins347331677.59424100%40262.2624424.48 14.04 841.54 25.25 183.61 1.18 0.67 40.39 1.21 8.81Union Manta: Propulsion EnginesMobilize facility installation vessel toMC-810 and preparations beforework begins20000966100%23184.0024414.10 8.08 484.58 14.54 105.73 0.68 0.39 23.26 0.70 5.07Union Manta: Ships Service GeneratorMobilize facility installation vessel toMC-810 and preparations beforework begins120057.96100%1391.042440.85 0.49 29.07 0.87 6.34 0.04 0.02 1.40 0.04 0.30TugAssemble tendons6000289.8100%6955.2024224.23 2.43 145.37 4.36 31.72 1.12 0.64 38.38 1.15 8.37Balder: DP EnginesAssemble tendons347331677.6039100%40262.49242224.48 14.04 841.55 25.25 183.61 6.46 3.71 222.17 6.67 48.47Balder: Crane EngineAssemble tendons33115.9873100%383.7024220.73 0.13 10.21 0.82 2.21 0.19 0.04 2.69 0.22 0.58Union Manta: Propulsion EnginesAssemble tendons20000966100%23184.00242214.10 8.08 484.58 14.54 105.73 3.72 2.13 127.93 3.84 27.91Supply VesselAssemble tendons3000144.9100%3477.6024222.11 1.21 72.69 2.18 15.86 0.56 0.32 19.19 0.58 4.19TugWet tow host to site - open waterportion of tow18000869.4100%20865.6024412.69 7.28 436.12 13.08 95.15 0.61 0.35 20.93 0.63 4.57TugWet tow host to site - open waterportion of tow18000869.4100%20865.6024412.69 7.28 436.12 13.08 95.15 0.61 0.35 20.93 0.63 4.57TugWet tow host to site - open waterportion of tow18000869.4100%20865.6024412.69 7.28 436.12 13.08 95.15 0.61 0.35 20.93 0.63 4.57Balder: DP EnginesHost installation347331677 6039100%40262 49241024 4814 04841 5525 25183 612 941 68100 993 0322 03Balder:DPEnginesHostinstallation1677.603940262.49..........Balder: Crane EngineHost installation33115.9873100%383.7024100.23 0.13 8.02 0.24 1.75 0.03 0.02 0.96 0.03 0.21Union Manta: Propulsion EnginesHost installation20000966100%23184.00241014.10 8.08 484.58 14.54 105.73 1.69 0.97 58.15 1.74 12.69TugHost installation280001352.4100%32457.60241019.74 11.32 678.41 20.35 148.02 2.37 1.36 81.41 2.44 17.76TugHost offshore tow tugs return to port 18000869.4100%20865.6024212.69 7.28 436.12 13.08 95.15 0.30 0.17 10.47 0.31 2.28TugHost offshore tow tugs return to port 18000869.4100%20865.6024212.69 7.28 436.12 13.08 95.15 0.30 0.17 10.47 0.31 2.28TugHost offshore tow tugs return to port 18000869.4100%20865.6024212.69 7.28 436.12 13.08 95.15 0.30 0.17 10.47 0.31 2.28TugHost positioning tugs return to port 280001352.4100%32457.6024219.74 11.32 678.41 20.35 148.02 0.47 0.27 16.28 0.49 3.55TugTransport flareboom and remainingpackages to site6000289.8100%6955.202434.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14Balder: DP EnginesCompletion scope (flareboom,demob, etc.)347331677.6039100%40262.4924224.48 14.04 841.55 25.25 183.61 0.59 0.34 20.20 0.61 4.41Balder: Crane EngineCompletion scope (flareboom,demob, etc.)33115.9873100%383.702420.23 0.13 8.02 0.24 1.75 0.01 0.00 0.19 0.01 0.04TugCompletion scope (flareboom,demob, etc.)6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76TugFlareboom transport tug and bargereturn to port6000289.8100%6955.202424.23 2.43 145.37 4.36 31.72 0.10 0.06 3.49 0.10 0.76Supply VesselOffshore hookup and commissioning 3000144.9100%3477.6024622.11 1.21 72.69 2.18 15.86 1.57 0.90 54.08 1.62 11.80AIR EMISSIONS CALCULATIONSCOMPANYAREABLOCKLEASEPLATFORMWELLCONTACT PHONE REMARKSShell Offshore IncMC 807MC 807 MC 807Mars B Host DVA wells 1-24Sylvia Bellone504-728-7215Mars B Olympus Construction,Production and Onboard RigDrillingOPERATIONSEQUIPMENTPurposeRATINGMAX. FUEL% Utilization(Load Factor)ACT. FUELRUN TIMEMAXIMUM POUNDS PER HOURESTIMATED TONSDiesel EnginesHP GAL/HR GAL/DNat. Gas EnginesHP SCF/HR SCF/DBurners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC COWest Boreas Flowline/manifoldand Umbilical InstallationInstall 2qt 8” WB Flowlines / Manifold Pipeline Installation Vessel 90000 4347 104328.00 24 5 63.44 36.38 2180.62 65.42 475.77 3.81 2.18 130.84 3.93 28.55Install 2qt 8” WB Flowlines / ManifoldSurvey Vessel1000048311592.002437.05 4.04 242.29 7.27 52.86 0.25 0.15 8.72 0.26 1.90Install 2qt 8” WB Flowlines / ManifoldTug Transport Pipe to site6000289.86955.202434.23 2.43 145.37 4.36 31.72 0.15 0.09 5.23 0.16 1.14Install 1 WB umbilicalUmbilical Installation Vessel13000627.915069.602459.16 5.25 314.98 9.45 68.72 0.55 0.32 18.90 0.57 4.12Pull-In 2 qty WB flowlines+ umbilicalPipeline Installation vessel900004347104328.0024563.44 36.38 2180.62 65.42 475.77 3.81 2.18 130.84 3.93 28.55Install 2 qty flowline JumpersSubsea Installation Vessel13000627.915069.602479.16 5.25 314.98 9.45 68.72 0.77 0.44 26.46 0.79 5.77Install 2 qty well jumpersSubsea Installation Vessel13000627.915069.602479.16 5.25 314.98 9.45 68.72 0.77 0.44 26.46 0.79 5.77Platform RigUTILITY VESSEL(>600hpdiesel)3,1201513,6176912.20 1.26 75.59 2.27 16.49 0.60 0.35 20.69 0.62 4.52UTILITY VESSEL@idle39019452 1891 0.27 0.16 9.45 0.28 2.06 0.23 0.13 7.76 0.23 1.69Cement Unit- Cat C1550024580 2491 1.10 0.20 15.42 1.23 3.34 1.21 0.22 16.88 1.35 3.65Cement Unit- Cat C1550024580 2491 1.10 0.20 15.42 1.23 3.34 1.21 0.22 16.88 1.35 3.65Contractor owned Knuckle Boom Pipe HandlingCranes for MarsB will be electric\hydraulic andpowered from the rig's motor control center (I.e. fromplatform power- no separate engines)0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00PRODUCTIONField Gas Compressor TRB-100115900113,5742,725,76924910.09 45.53 0.35 29.07 0.09 49.85 0.38 31.83Field Gas Compressor TRB-105115900113,5742,725,76924910.09 45.53 0.35 29.07 0.09 49.85 0.38 31.83Turbine Driven Generator Dual Fuel - TRB-2101760054,2871,302,88324910.04 21.76 0.17 13.89 0.05 23.83 0.18 15.21Turbine Driven Generator Dual Fuel TRB 2111760054 2871 302 88324910 0421 760 1713 890 0523 830 1815 21(all rig power comes fromPlatform power except asshown)assume 100%utilization of thesevesselsTurbineDrivenGeneratorDualFuel-TRB-2111760054,2871,302,88324910.0421.760.1713.890.0523.830.1815.21Turbine Driven Generator Dual Fuel - TRB-2121760054,2871,302,88324910.04 21.76 0.17 13.89 0.05 23.83 0.18 15.21Turbine Driven Generator Dual Fuel - TRB-2131760054,2871,302,88324910.04 21.76 0.17 13.89 0.05 23.83 0.18 15.21Turbine Driven Generator Dual Fuel - TRB-2141760054,2871,302,88324910.04 21.76 0.17 13.89 0.05 23.83 0.18 15.21Turbine Driven Generator Dual Fuel - TRB-2151760054,2871,302,88324910.04 21.76 0.17 13.89 0.05 23.83 0.18 15.21Turbine Driven Generator Dual Fuel - Diesel73903578,56624915.21 2.99 179.05 5.37 39.07 5.69 3.26 195.53 5.87 42.66Essential Generator ZAN-30211500721,7392421.06 0.61 36.34 1.09 7.93 0.02 0.01 0.76 0.02 0.17Emergency Generator ZAN-30201500721,7392421.06 0.61 36.34 1.09 7.93 0.02 0.01 0.76 0.02 0.17Firewater Pump PBE-23311065511,2352130.75 0.43 25.80 0.77 5.63 0.01 0.00 0.25 0.01 0.05Firewater Pump PBE-23511065511,2352130.75 0.43 25.80 0.77 5.63 0.01 0.00 0.25 0.01 0.05Cold Start Air Compressor SKD-20201256145430.28 0.05 3.85 0.31 0.83 0.00 0.00 0.02 0.00 0.01Pedestal Crane CRN 2410920441,0664910.65 0.37 22.29 0.67 4.86 0.12 0.07 4.07 0.12 0.89Pedestal Crane CRN 2420920441,0664910.65 0.37 22.29 0.67 4.86 0.12 0.07 4.07 0.12 0.89Pedestal Crane CRN 2430920441,0664910.65 0.37 22.29 0.67 4.86 0.12 0.07 4.07 0.12 0.89Misc small, temporary diesel engines (weldingmachines, air compressors etc)1000481,15924910.70 0.40 24.23 0.73 5.29 0.77 0.44 26.46 0.79 5.77UTILITY VESSEL(>600hpdiesel),generic3,1201513,6176912.20 1.26 75.59 2.27 16.49 0.60 0.35 20.69 0.62 4.52UTILITY VESSEL(>600hpdiesel),generic3,1201513,6176912.20 1.26 75.59 2.27 16.49 0.60 0.35 20.69 0.62 4.52UTILITY VESSEL@idle,generic3901945218910.27 0.16 9.45 0.28 2.06 0.23 0.13 7.76 0.23 1.69TANKSTank IDsBPDHelicopter fuel tank, fourABJ-2721, ABJ-2722, ABJ,27239124910.110.12Hull Methanol Storage Tanks (two) w/ nitrogenblanket. One in service at a timeABJ-5160 & ABJ-5161140024911.751.92Hull Diesel Storage TankABJ-5360364024914.554.98Topsides methanol storage tank breathing whenused w/ N2 blanketABJ-1901024910.000.00Water Clarifier Tank w/N2 blanketABJ-2601224910.000.00Biocide Tank w/N2 blanketABJ-26022024910.030.03Scale Inhibitor Tank w/N2 blanketABJ-2604424910.000.00LDHI Tank w/N2 blanketABJ-260510024910.130.14Silicone Defoamer Tank w/N2 blanketABJ-26061024910.010.01Asphaltene Inhibitor Tanks w/N2 blanketABJ-26073024910.040.04Asphaltene Solvent Tank w/N2 blanketABJ-260810024910.130.14Corrosion Inhibitor Tank w/N2 blanketABJ-26091124910.010.02Flourosilicone Defoamer w/N2 BlanketABJ-2610324910.000.00Demulsifier Tank w/N2 blanketABJ-2613424910.000.01Asphaltene Dispersant w/N2 blanketABJ-26032Scale and Corrosion Inhibitor 1 w/N2 blanket ABJ-2611 and ABJ-26126FLARESCF/HRZZZ-500 HP Flare - pilot gas20024910.00 0.01 0.01 0.08 0.00 0.02 0.01 0.09ZZZ-500 HP Flare - purge gasnitrogenZZZ-500 HP Flare1875000010,140,000241811.12 1338.75 1130.63 7284.38 0.00 0.05 6.52 5.50 35.45ZZZ-510 Atm(LP) Flare - pilot gas10024910.00 0.01 0.01 0.04 0.00 0.01 0.01 0.04ZZZ-510 Atm (LP)Flare - purge gasnitrogenZZZ-510 Atm (LP) Flare50000081120024180.30 35.70 30.15 194.25 0.00 0.00 0.52 0.44 2.84MISC VENTSSCF/HRPre Sump5024910.170.19Sump caisson5024910.170.19Well clean up sparge tanks to atm vent pole3752491.280.14VRUA Process Atmospheric Vent when flareisolated18751014242.56.380.19VRUB Process Atmospheric Vent when flareisolated18751014242.56.380.19FGCA Process Atmospheric Vent when flareisolated18751014242.56.380.19FGCA Process Atmospheric Vent when flareisolated18751014242.56.380.19VRUA Secondary Seal Gas Atmospheric VentnitrogenVRUASecondarySealGasAtmosphericVentnitrogenVRUB Secondary Seal Gas Atmospheric VentnitrogenFGCA Secondary Seal Gas Atmospheric VentnitrogenFGCB Secondary Seal Gas Atmospheric VentnitrogenGas Lift Compressor Atmosphereic vent when flareisolated18751014242.56.380.19Seal leakage vapour recovery and export gascompressors10002400024913.403.72FUGITIVESCOUNTFUGITIVES12381916.196.78PRODUCTIONNO ACTIVITYDRILLINGWELL TESTNO ACTIVITY2013YEAR TOTAL702.94 413.40 25679.58 1937.60 12874.72 59.76 33.74 2249.16 89.07 629.53EXEMPTION CALCULATIONDISTANCE FROM LAND IN MILES1764.90 1764.90 1764.90 1764.90 47972.9253.0AIR EMISSIONS CALCULATIONSCOMPANYAREABLOCKLEASE PLATFORM WELLCONTACT PHONE REMARKSShell Offshore IncMC 807MC 807 MC 807Mars B Host DVA wells 1-24Sylvia Bellone504-728-7215Mars B Olympus Construction,Production and Onboard RigDrillingOPERATIONSEQUIPMENTVessel TypeNumber of Vessels To be Used RATINGMAX. FUEL ACT. FUELRUN TIMEMAXIMUM POUNDS PER HOURESTIMATED TONSDiesel EnginesHPGAL/HRGAL/DNat. Gas EnginesHPSCF/HRSCF/DBurnersMMBTU/HRSCF/HRSCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOCCOWest Boreas FlowlineandUmbilical InstallationInstall 3 qty well jumpersSubsea Installation Vessel11300062815,07024219.16 5.25 314.98 9.45 68.72 2.31 1.32 79.37 2.3817.32Platform RigUTILITY VESSEL (>600hp diesel)3,1201513,6176365 2.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.4818.06UTILITY VESSEL @ idle3901945218365 0.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.936.77Cement Unit- Cat C15500245802421 1.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.310.84Cement Unit- Cat C15500245802421 1.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.310.84Fract Boat884242710,250243.75 6.23 3.57 214.23 6.43 46.74 0.28 0.16 9.64 0.292.10Fract Equipment253621,22529,4003.23.75 17.88 10.25 614.50 18.43 134.07 0.11 0.06 3.69 0.110.80Misc small diesl engines for well work (e.g. WL power packs,pulling units, etc)1,000481,15983650.70 0.40 24.23 0.73 5.29 1.03 0.59 35.37 1.067.72Contractor owned Knuckle Boom Pipe Handling Cranesfor Mars B will be electric\hydraulic and powered from therig's motor control center (I.e. from platform power- no000000.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.000.00PRODUCTIONField Gas Compressor TRB-100115900113,574 2,725,769 243650.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Field Gas Compressor TRB-105115900113,574 2,725,769 243650.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Turbine Driven Generator Dual Fuel - TRB-2101760054,2871,302,883 243650.04 21.76 0.17 13.89 0.18 95.32 0.7360.86Turbine Driven Generator Dual Fuel - TRB-2111760054,2871,302,883 243650.04 21.76 0.17 13.89 0.18 95.32 0.7360.86Turbine Driven Generator Dual Fuel TRB 2121760054 2871 302 883243650 0421 760 1713 890 1895 320 7360 86(all rig power comes fromPlatform power except asshown)TurbineDrivenGeneratorDualFuel-TRB-2121760054,2871,302,883243650.0421.760.1713.890.1895.320.7360.86Turbine Driven Generator Dual Fuel - TRB-21317600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2141760054,2871,302,883 243650.04 21.76 0.17 13.89 0.18 95.32 0.7360.86Turbine Driven Generator Dual Fuel - TRB-2151760054,2871,302,883 243650.04 21.76 0.17 13.89 0.18 95.32 0.7360.86Turbine Driven Generator Dual Fuel - Diesel73903578,56624180 5.21 2.99 179.05 5.37 39.07 11.25 6.45 386.75 11.60 84.38Essential Generator ZAN-30211500721,7392471.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.090.67Emergency Generator ZAN-30201500721,7392471.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.090.67Firewater Pump PBE-23311065511,235252 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.030.22Firewater Pump PBE-23511065511,235252 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.030.22Cold Start Air Compressor SKD-20201256145412 0.28 0.05 3.85 0.31 0.83 0.01 0.00 0.09 0.010.02Pedestal Crane CRN 2410920441,0664365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Pedestal Crane CRN 2420920441,0664365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Pedestal Crane CRN 2430920441,0664365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Misc small, temporary diesel engines (welding machines,air compressors etc)1000481,15924365 0.70 0.40 24.23 0.73 5.29 3.09 1.77 106.12 3.1823.15UTILITY VESSEL (>600hp diesel), generic3,1201513,6176365 2.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.4818.06UTILITY VESSEL (>600hp diesel), generic3,1201513,6176365 2.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.4818.06UTILITY VESSEL @ idle, generic3901945218365 0.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.936.77TANKSTank IDsBPDHelicopter fuel tank, fourABJ-2721, ABJ-2722, ABJ,272391243650.110.50Hull Methanol Storage Tanks (two) w/ nitrogen blanket.One in service at a timeABJ-5160 & ABJ-51611400243651.757.67Hull Diesel Storage TankABJ-53603640243654.5519.93Topsides methanol storage tank breathing when used w/N2 blanketABJ-19010243650.000.00Water Clarifier Tank w/N2 blanketABJ-26012243650.000.01Biocide Tank w/N2 blanketABJ-20243650 030 11BiocideTankw/N2blanket2602..Scale Inhibitor Tank w/N2 blanketABJ-26044243650.000.02LDHI Tank w/N2 blanketABJ-2605100243650.130.55Silicone Defoamer Tank w/N2 blanketABJ-260610243650.010.05Asphaltene Inhibitor Tanks w/N2 blanketABJ-260730243650.040.16Asphaltene Solvent Tank w/N2 blanketABJ-2608100243650.130.55Corrosion Inhibitor Tank w/N2 blanketABJ-260911243650.010.06Flourosilicone Defoamer w/N2 BlanketABJ-26103243650.000.01Demulsifier Tank w/N2 blanketABJ-26134243650.000.02Asphaltene Dispersant w/N2 blanketABJ-26032243650.000.01Scale and Corrosion Inhibitor 1 w/N2 blanketABJ-2611 and ABJ-26126243650.010.03FLARESCF/HRZZZ-500 HP Flare - pilot gas200243650.00 0.01 0.01 0.08 0.00 0.06 0.050.34ZZZ-500 HP Flare - purge gasnitrogenZZZ-500 HP Flare18,750,000.00 10,140,000 247211.12 1338.75 1130.63 7284.38 0.00 0.22 26.06 22.01 141.82ZZZ-510 Atm(LP) Flare - pilot gas100243650.00 0.01 0.01 0.04 0.00 0.03 0.030.17ZZZ-510 Atm (LP) Flare - purge gasnitrogenZZZ-510 Atm (LP) Flare50000081120024720.30 35.70 30.15 194.25 0.00 0.02 2.09 1.7611.35MISC VENTSSCF/HRPre Sump50243650.170.74Sump caisson50243650.170.74Well clean up sparge tanks to atm vent pole37524361.280.55VRUA Process Atmospheric Vent when flare isolated1875101424106.380.77VRUB Process Atmospheric Vent when flare isolated1875101424106.380.77FGCA Process Atmospheric Vent when flare isolated1875101424106.380.77FGCA Process Atmospheric Vent when flare isolated1875101424106.380.77VRUA Secondary Seal Gas Atmospheric VentnitrogenVRUASecondarySealGasAtmosphericVentnitrogenVRUB Secondary Seal Gas Atmospheric VentnitrogenFGCA Secondary Seal Gas Atmospheric VentnitrogenFGCB Secondary Seal Gas Atmospheric VentnitrogenGas Lift Compressor Atmosphereic vent when flare isolated1875101424106.380.77Seal leakage vapour recovery and export gas compressors100024000243653.4014.89FUGITIVESCOUNTFUGITIVES123813656.1927.11DRILLINGOIL BURN0WELL TESTGAS FLARE02014 YEAR TOTAL55.08 42.45 3438.86 1269.37 8022.24 29.31 18.67 1995.15 139.15 990.78EXEMPTION CALCULATIONDISTANCE FROM LAND IN MILES1764.90 1764.90 1764.90 1764.90 47972.9253.0AIR EMISSIONS CALCULATIONSCOMPANYAREABLOCKLEASEPLATFORM WELLCONTACT PHONE REMARKSShell Offshore Inc MC 807MC 807 MC 807Mars B Host DVA wells 1-24Sylvia Bellone504-728-7215Mars B Olympus Construction,Production and Onboard RigDrillingOPERATIONSEQUIPMENTRATINGMAX. FUELACT. FUELRUN TIMEMAXIMUM POUNDS PER HOURESTIMATED TONSDiesel EnginesHPGAL/HRGAL/DNat. Gas EnginesHPSCF/HRSCF/DBurnersMMBTU/HRSCF/HRSCF/D HR/D DAYS PM SOx NOxVOC CO PM SOx NOxVOCCOWest BoreasFlowlineand UmbilicalInstallationInstall 1 qty well jumperSubsea Installation Vessel11300062815,070247 9.16 5.25 314.98 9.45 68.72 0.77 0.44 26.46 0.795.77Platform RigUTILITY VESSEL (>600hp diesel)3,1201513,6176 3652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL @ idle3901945218 3650.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.936.77Cement Unit- Cat C155002458024 211.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.310.84Cement Unit- Cat C155002458024 211.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.310.84Fract Boat884242710,250242.506.23 3.57 214.23 6.43 46.74 0.19 0.11 6.43 0.191.40Fract Equipment253621,22529,4003.22.5017.88 10.25 614.50 18.43 134.07 0.07 0.04 2.46 0.070.54Misc smal diesl engines for well work (e.g. WL power packs, pulling1,000481,1598 3650.70 0.40 24.23 0.73 5.29 1.03 0.59 35.37 1.067.72Contractor owned Knuckle Boom Pipe Handling Cranes for MarsB will be electric\hydraulic andpowered from the rig's motorcontrol center (I.e. from platform power- no separate engines)00000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.000.00PRODUCTIONField Gas Compressor TRB-100115900113,5742,725,769 24 365 0.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Field Gas Compressor TRB-105115900113 5742 725 769243650 0945 530 3529 070 38199 421 53127 32(all rig power comesfrom Platform powerexcept as shown)FieldGasCompressorTRB 105115900113,5742,725,769243650.0945.530.3529.070.38199.421.53127.32Turbine Driven Generator Dual Fuel - TRB-2101760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2111760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2121760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2131760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2141760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2151760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - Diesel73903578,56624 18 5.21 2.99 179.05 5.37 39.07 1.13 0.65 38.68 1.168.44Essential Generator ZAN-30211500721,739247 1.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.090.67Emergency Generator ZAN-30201500721,739247 1.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.090.67Firewater Pump PBE-23311065511,235252 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.030.22Firewater Pump PBE-23511065511,235252 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.030.22Cold Start Air Compressor SKD-20201256145412 0.28 0.05 3.85 0.31 0.83 0.01 0.00 0.09 0.010.02Pedestal Crane CRN 2410920441,0664 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Pedestal Crane CRN 2420920441,0664 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Misc small, temporary diesel engines (welding machines, aircompressors etc)1000481,15924 365 0.70 0.40 24.23 0.73 5.29 3.09 1.77 106.12 3.18 23.15Pedestal Crane CRN 2430920441,0664 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55UTILITY VESSEL (>600hp diesel), generic3,1201513,6176 3652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL (>600hp diesel), generic3,1201513,6176 3652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL @ idle, generic3901945218 3650.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.936.77TANKSTank IDsBPDHelicopter fuel tank, fourABJ-2721, ABJ-2722, ABJ,27239124 3650.110.50Hull Methanol Storage Tanks (two) w/ nitrogen blanket. One inservice at a timeABJ-5160 & ABJ-5161140024 3651.757.67Hull Diesel Storage TankABJ-5360364024 3654.5519.93Topsides methanol storage tank breathingwhen used w/ N2ABJ 19010243650 000 00p ggblanketABJ-19010243650.000.00Water Clarifier Tank w/N2 blanketABJ-2601224 3650.000.01Biocide Tank w/N2 blanketABJ-26022024 3650.030.11Scale Inhibitor Tank w/N2 blanketABJ-2604424 3650.000.02LDHI Tank w/N2 blanketABJ-260510024 3650.130.55Silicone Defoamer Tank w/N2blanketABJ-26061024 3650.010.05Asphaltene Inhibitor Tanks w/N2 blanketABJ-26073024 3650.040.16Asphaltene Solvent Tank w/N2 blanketABJ-260810024 3650.130.55Corrosion Inhibitor Tank w/N2 blanketABJ-26091124 3650.010.06Flourosilicone Defoamer w/N2 BlanketABJ-2610324 3650.000.01Demulsifier Tank w/N2 blanketABJ-2613424 3650.000.02Asphaltene Dispersant w/N2 blanketABJ-2603224 3650.000.01Scale and Corrosion Inhibitor 1 w/N2 blanketABJ-2611 and ABJ-2612624 3650.010.03FLARESCF/HRSCF/DZZZ-500 HP Flare - pilot gas20024 3650.00 0.01 0.01 0.08 0.00 0.06 0.050.34ZZZ-500 HP Flare - purge gasnitrogen00ZZZ-500 HPFlare18750000 10,140,000 24 7211.12 1338.75 1130.63 7284.38 0.00 0.22 26.06 22.01 141.82ZZZ-510 Atm(LP) Flare - pilot gas10024 3650.00 0.01 0.01 0.04 0.00 0.03 0.030.17ZZZ-510 Atm (LP)Flare - purge gasnitrogen00ZZZ-510 Atm (LP) Flare50000081120024 720.30 35.70 30.15 194.25 0.00 0.02 2.09 1.76 11.35MISC VENTSSCF/HRSCF/DPre Sump5024 365 0.170.74Sump caisson5024 3650.170.74Well clean up sparge tanks to atm vent pole37524 361.280.55VRUA Process Atmospheric Vent when flare isolated1875101424 106.380.77VRUB Process Atmospheric Vent when flare isolated1875101424 106.380.77FGCA Process Atmospheric Vent when flare isolated1875 1014 24 10 6.38 0.77FGCA Process Atmospheric Vent when flare isolated1875101424 106.380.77VRUA Secondary Seal Gas Atmospheric VentnitrogenVRUB Secondary Seal Gas Atmospheric VentnitrogenFGCA Secondary Seal Gas Atmospheric VentnitrogenFGCB Secondary Seal Gas Atmospheric VentnitrogenGas Lift Compressor Atmosphereic vent when flare isolated1875101424 106.380.77Seal leakage vapour recovery and export gas compressors10002400024 3653.4014.89FUGITIVESCOUNTFUGITIVES123813656.1927.11DRILLINGOIL BURN000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.000.00WELL TESTGAS FLARE0000.00 0.00 0.00 0.00 0.00 0.00 0.000.002015YEAR TOTAL55.08 42.45 3438.86 1269.37 8022.24 17.52 11.91 1589.71 126.98 902.33EXEMPTIONCALCULATIONDISTANCE FROM LAND IN MILES1764.90 1764.90 1764.90 1764.90 47972.92AIR EMISSIONS CALCULATIONSCOMPANYAREABLOCKLEASEPLATFORM WELLCONTACT PHONE REMARKSShell Offshore Inc MC 807MC 807 MC 807Mars B Host DVA wells 1-24Sylvia Bellone504-728-7215Mars B Olympus Construction, Production and Onboard Rig DrillingOPERATIONSEQUIPMENTRATINGMAX. FUELACT. FUELRUN TIMEMAXIMUM POUNDS PER HOURESTIMATED TONSDiesel EnginesHP GAL/HR GAL/DNat. Gas EnginesHP SCF/HR SCF/DBurners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC COPlatform RigUTILITY VESSEL (>600hp diesel)3,1201513,61763652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL @ idle3901945218 3650.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.936.77Cement Unit- Cat C155002458024211.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.310.84Cement Unit- Cat C155002458024211.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.310.84Fract Boat8,84242710,25024.006.256.23 3.57 214.23 6.43 46.74 0.47 0.27 16.07 0.483.51Fract Equipment25,3621,22529,4003.206.2517.88 10.25 614.50 18.43 134.07 0.18 0.10 6.14 0.181.34Misc smal diesl engines for well work (e.g. WL power packs, pulling1,000481,15983650.70 0.40 24.23 0.73 5.29 1.03 0.59 35.37 1.067.72Contractor owned Knuckle Boom Pipe HandlingCranes for Mars Bwill be electric\hydraulicand powered from the rig's motor controlcenter (I.e. from platform power- no separate engines)0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00PRODUCTIONField Gas Compressor TRB-1001 15900 113,574 2,725,769 24 365 0.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Field Gas Compressor TRB-1051 15900 113,574 2,725,769 24 365 0.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Turbine Driven Generator Dual Fuel - TRB-2101 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2111 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2121 7600 54,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86(all rig power comesfrom Platform powerexcept as shown),, ,Turbine Driven Generator Dual Fuel - TRB-2131760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2141760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2151760054,2871,302,883 24 3650.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - Diesel73903578,56624 18 5.21 2.99 179.05 5.37 39.07 1.13 0.65 38.68 1.168.44Essential Generator ZAN-30211500721,739247 1.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.090.67Emergency Generator ZAN-30201500721,739247 1.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.090.67Firewater Pump PBE-23311065511,235252 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.030.22Firewater Pump PBE-23511065511,235252 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.030.22Cold Start Air Compressor SKD-20201256145412 0.28 0.05 3.85 0.31 0.83 0.01 0.00 0.09 0.010.02Pedestal Crane CRN 2410920441,0664 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Pedestal Crane CRN 2420920441,0664 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Pedestal Crane CRN 2430920441,0664 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.493.55Misc small, temporary diesel engines (welding machines, aircompressors etc)1000481,15924 365 0.70 0.40 24.23 0.73 5.29 3.09 1.77 106.12 3.18 23.15UTILITY VESSEL (>600hp diesel), generic3,1201513,61763652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL (>600hp diesel), generic3,1201513,61763652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL @ idle, generic3901945218 3650.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.936.77TANKSBPD Tank IDsHelicopter fuel tank, four91ABJ-2721, ABJ-2722, ABJ,272324 3650.110.50Hull Methanol Storage Tanks (two) w/ nitrogen blanket. One inservice at a time1400ABJ-5160 & ABJ-516124 3651.757.67Hull Diesel Storage Tank3640ABJ-536024 3654.5519.93Topsides methanol storage tank breathing when used w/ N2blanket0ABJ-190124 3650.000.00Water Clarifier Tank w/N2 blanket2ABJ-260124 3650.000.01Biocide Tank w/N2 blanket20ABJ-260224 3650.030.11Scale Inhibitor Tank w/N2 blanket4ABJ-260424 3650.000.02LDHI Tank w/N2 blanket100ABJ-260524 3650.130.55Silicone Defoamer Tank w/N2 blanket10ABJ-260624 3650.010.05Asphaltene Inhibitor Tanks w/N2 blanket30ABJ-260724 3650.040.16Asphaltene Solvent Tank w/N2 blanket100ABJ-260824 3650.130.55Corrosion Inhibitor Tank w/N2 blanket11ABJ-260924 3650.010.06Flourosilicone Defoamer w/N2 Blanket3ABJ-261024 3650.000.01Demulsifier Tank w/N2 blanket4ABJ-261324 3650.000.02Asphaltene Dispersant w/N2 blanket2ABJ-260324 3650.000.01Scale and Corrosion Inhibitor 1 w/N2 blanket6ABJ-2611 and ABJ-261224 3650.010.03FLARESCF/HRSCF/DZZZ-500 HP Flare - pilot gas20024 3650.00 0.01 0.01 0.08 0.00 0.06 0.050.34ZZZ-500 HP Flare - purge gasnitrogen00ZZZ-500 HP Flare1875000010,140,000 24 7211.12 1338.75 1130.63 7284.38 0.00 0.22 26.06 22.01 141.82ZZZ-510 Atm(LP) Flare - pilot gas10024 3650.00 0.01 0.01 0.04 0.00 0.03 0.030.17ZZZ-510 Atm (LP) Flare - purge gasnitrogen00ZZZ-510 Atm (LP) Flare50000081120024 720.30 35.70 30.15 194.25 0.00 0.02 2.09 1.76 11.35MISC VENTSSCF/HRSCF/DPre Sump5024 3650.170.74Sump caisson5024 3650.170.74Well clean up sparge tanks to atm vent pole37524 361.280.55VRUA Process Atmospheric Vent when flare isolated1875101424 106.380.77VRUB Process Atmospheric Vent when flare isolated1875101424 106.380.77FGCA Process Atmospheric Vent when flare isolated1875101424 106.380.77FGCA Process Atmospheric Vent when flare isolated1875101424106 380 77FGCAProcessAtmosphericVentwhenflareisolated..VRUA SecondarySeal Gas Atmospheric VentnitrogenVRUB SecondarySeal Gas Atmospheric VentnitrogenFGCA SecondarySeal Gas Atmospheric VentnitrogenFGCB SecondarySeal Gas Atmospheric VentnitrogenGas Lift Compressor Atmosphereic vent when flare isolated1875101424 106.380.77Seal leakage vapour recoveryand exportgas compressors10002400024 3653.4014.89FUGITIVESCOUNTFUGITIVES123813656.1927.11DRILLINGOIL BURN000 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.000.00WELL TESTGAS FLARE0000.00 0.00 0.00 0.00 0.00 0.00 0.000.002016-2024YEAR TOTAL45.91 37.20 3123.89 1259.92 7953.52 17.14 11.69 1576.58 126.59 899.46EXEMPTIONCALCULATIONDISTANCE FROM LAND IN MILES1764.90 1764.90 1764.90 1764.90 47972.9253.0AIR EMISSIONS CALCULATIONSCOMPANY AREA BLOCK LEASE PLATFORM WELL CONTACT PHONE REMARKSShell Offshore Inc MC 807 MC 807 MC 807 Mars B Host DVA wells 1-24 Sylvia Bellone 504-728-7215Mars B Olympus Construction, Production and Onboard Rig DrillingOPERATIONS EQUIPMENT RATING MAX. FUEL ACT. FUEL RUN TIME MAXIMUM POUNDS PER HOUR ESTIMATED TONSDiesel Engines HP GAL/HR GAL/DNat. Gas Engines HP SCF/HR SCF/DBurners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC COPlatform RigUTILITY VESSEL (>600hp diesel) 3,1201513,617 6 3652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL @ idle 39019452 18 3650.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.93 6.77Cement Unit- Cat C15 50024580 24 211.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.31 0.84Cement Unit- Cat C15 50024580 24 211.10 0.20 15.42 1.23 3.34 0.28 0.05 3.89 0.31 0.84Misc smal diesl engines for well work (e.g. WL power packs, pulling1,000481,159 8 3650.70 0.40 24.23 0.73 5.29 1.03 0.59 35.37 1.06 7.72Contractor owned Knuckle Boom Pipe Handling Cranes for MarsB will be electric\hydraulicand powered from the rig's motorcontrol center (I.e. from platform power- no separate engines)0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00PRODUCTIONField Gas Compressor TRB-1001 15900 113,574 2,725,769 24 365 0.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Field Gas Compressor TRB-1051 15900 113,574 2,725,769 24 365 0.09 45.53 0.35 29.07 0.38 199.42 1.53 127.32Turbine Driven Generator Dual Fuel - TRB-2101 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2111 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2121 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - TRB-2131 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel-TRB-2141760054,2871,302,883243650.0421.760.1713.890.1895.320.7360.86(all rig power comesfrom Platform powerexcept as shown)TurbineDrivenGeneratorDualFuelTRB 2141760054,2871,302,883243650.0421.760.1713.890.1895.320.7360.86Turbine Driven Generator Dual Fuel - TRB-2151 7600 54,287 1,302,883 24 365 0.04 21.76 0.17 13.89 0.18 95.32 0.73 60.86Turbine Driven Generator Dual Fuel - Diesel 7390 357 8,566 24 18 5.21 2.99 179.05 5.37 39.07 1.13 0.65 38.68 1.16 8.44Essential Generator ZAN-3021 1500 72 1,739 24 7 1.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.09 0.67Emergency Generator ZAN-3020 1500 72 1,739 24 7 1.06 0.61 36.34 1.09 7.93 0.09 0.05 3.05 0.09 0.67Firewater Pump PBE-2331 1065 51 1,235 2 52 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.03 0.22Firewater Pump PBE-2351 1065 51 1,235 2 52 0.75 0.43 25.80 0.77 5.63 0.03 0.02 1.01 0.03 0.22Cold Start Air Compressor SKD-2020 125 6 145 4 12 0.28 0.05 3.85 0.31 0.83 0.01 0.00 0.09 0.01 0.02Pedestal Crane CRN 2410 920 44 1,066 4 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.49 3.55Pedestal Crane CRN 2420 920 44 1,066 4 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.49 3.55Pedestal Crane CRN 2430 920 44 1,066 4 365 0.65 0.37 22.29 0.67 4.86 0.47 0.27 16.27 0.49 3.55Misc small, temporary diesel engines (welding machines, aircompressors etc)1000 48 1,159 24 365 0.70 0.40 24.23 0.73 5.29 3.09 1.77 106.12 3.18 23.15UTILITY VESSEL (>600hp diesel), generic 3,120151 3,6176 3652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL (>600hp diesel), generic 3,120151 3,6176 3652.20 1.26 75.59 2.27 16.49 2.41 1.38 82.78 2.48 18.06UTILITY VESSEL @ idle, generic 39019 45218 3650.27 0.16 9.45 0.28 2.06 0.90 0.52 31.04 0.93 6.77TANKS BPD Tank IDsHelicopter fuel tank, four 91ABJ-2721, ABJ-2722, ABJ,2723 24 365 0.11 0.50Hull Methanol Storage Tanks (two) w/ nitrogen blanket. One inservice at a time1400 ABJ-5160 & ABJ-5161 24 365 1.75 7.67Hull Diesel Storage Tank 3640 ABJ-5360 24 365 4.55 19.93Topsides methanol storage tank breathing when used w/ N2blanket0 ABJ-1901 24 365 0.00 0.00Water Clarifier Tank w/N2 blanket 2 ABJ-2601 24 365 0.00 0.01Biocide Tank w/N2 blanket 20 ABJ-2602 24 365 0.03 0.11Scale Inhibitor Tank w/N2 blanket4ABJ243650 000 02ScaleInhibitorTankw/N2blanket-2604..LDHI Tank w/N2 blanket 100 ABJ-2605 24 365 0.13 0.55Silicone Defoamer Tank w/N2 blanket 10 ABJ-2606 24 365 0.01 0.05Asphaltene Inhibitor Tanks w/N2 blanket 30 ABJ-2607 24 365 0.04 0.16Asphaltene Solvent Tank w/N2 blanket 100 ABJ-2608 24 365 0.13 0.55Corrosion Inhibitor Tank w/N2 blanket 11 ABJ-2609 24 365 0.01 0.06Flourosilicone Defoamer w/N2 Blanket 3 ABJ-2610 24 365 0.00 0.01Demulsifier Tank w/N2 blanket 4 ABJ-2613 24 365 0.00 0.02Asphaltene Dispersant w/N2 blanket 2 ABJ-2603 24 365 0.00 0.01Scale and Corrosion Inhibitor 1 w/N2 blanket 6 ABJ-2611 and ABJ-2612 24 365 0.01 0.03FLARESCF/HR SCF/DZZZ-500 HP Flare - pilot gas200 24 365 0.00 0.01 0.01 0.08 0.00 0.06 0.05 0.34ZZZ-500 HP Flare -purge gas nitrogen 0 0ZZZ-500 HP Flare18750000 10,140,000 24 72 11.12 1338.75 1130.63 7284.38 0.00 0.22 26.06 22.01 141.82ZZZ-510 Atm(LP) Flare- pilot gas 100 24 365 0.00 0.01 0.01 0.04 0.00 0.03 0.03 0.17ZZZ-510 Atm (LP) Flare - purge gas nitrogen 0 0ZZZ-510 Atm (LP) Flare500000 811200 24 72 0.30 35.70 30.15 194.25 0.00 0.02 2.09 1.76 11.35MISC VENTSSCF/HR SCF/DPre Sump50 24 365 0.17 0.74Sump caisson50 24 365 0.17 0.74Well clean up sparge tanks to atm vent pole 375 24 36 1.28 0.55VRUA Process Atmospheric Vent when flare isolated 1875 1014 24 10 6.38 0.77VRUB Process Atmospheric Vent when flare isolated 1875 1014 24 10 6.38 0.77FGCA Process Atmospheric Vent when flare isolated 1875 1014 24 10 6.38 0.77FGCA Process Atmospheric Vent when flare isolated 1875 1014 24 10 6.38 0.77VRUA Secondary Seal Gas Atmospheric VentnitrogenVRUASecondarySealGasAtmosphericVentnitrogenVRUB Secondary Seal Gas Atmospheric Vent nitrogenFGCA Secondary Seal Gas Atmospheric Vent nitrogenFGCB Secondary Seal Gas Atmospheric Vent nitrogenGas Lift Compressor Atmosphereic vent when flare isolated 1875 1014 24 10 6.38 0.77Seal leakage vapour recovery and export gas compressors 1000 24000 24 365 3.40 14.89FUGITIVESCOUNTFUGITIVES12381 365 6.19 27.11DRILLINGOIL BURN 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00WELL TESTGAS FLARE0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.002025-2060 YEAR TOTAL21.80 23.38 2295.15 1235.06 7772.70 16.49 11.32 1554.36 125.92 894.61EXEMPTIONCALCULATIONDISTANCE FROM LAND IN MILES1764.90 1764.90 1764.90 1764.90 47972.9253.0

# A TTACHMENT 

# B: OCD M ODELING 

# F ILES

Provided Electronically on Attached CD

# A TTACHMENT 

# C: M ODELING 

# R ESULTS FOR THE 

# E NTIRE 

# R EGION

# Table C-2. Shell Offshore, Inc. - OCD Modeling Results

Mars B Host Operations

300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m

B1 + 

# 29.4851 -89.1701 16.3 16.3 16.3 5.96 5.62 5.62 16.3 16.3 16.3 16.3 16.3 16.3 16.3 16.3 16.3

B2 + 

# 29.4623 -89.2030 16.74 16.74 16.74 6.12 6.11 6.11 16.74 16.74 16.74 16.74 16.74 16.74 16.74 16.74 16.74

C1 + 

# 29.9088 -88.8219 4.41 3.96 3.96 7.02 7.02 7.02 11.39 11.39 11.39 8.7 8.7 8.7 4.78 4.78 4.78

C2 + 

# 29.9524 -88.8261 4.36 4.3 4.3 6.63 6.63 6.63 11.4 11.4 11.4 8.45 8.45 8.45 4.54 4.54 4.54

C3 + 

# 29.8669 -88.8371 4.54 4.23 4.23 7.12 7.12 7.12 11.79 11.79 11.79 8.91 8.91 8.91 4.88 4.88 4.88

C4 + 

# 29.8345 -88.8373 4.59 4.04 4.04 7.38 7.38 7.38 11.84 11.84 11.84 9.09 9.09 9.09 5 5 5

C5 + 

# 29.7925 -88.8604 4.77 4.61 4.61 7.35 7.35 7.35 12.46 12.46 12.46 9.3 9.3 9.3 5.04 5.04 5.04

R1 29.0003 -89.3673 23.18 23.18 23.18 9.98 9.98 9.98 15.02 15.02 15.02 17.07 17.07 17.07 11.24 11.24 11.24

R10 29.0048 -89.1778 26.14 26.14 26.14 8.88 6.15 6.15 24.57 24.57 24.57 24.57 24.57 24.57 24.57 24.57 24.57

R11 28.9900 -89.1422 24.58 24.58 24.58 9.44 5.08 5.08 20.08 20.08 20.08 21.46 21.46 21.46 19.71 19.71 19.71

R12 29.0749 -89.1185 20.8 20.8 20.8 8.68 4.44 4.42 19.94 19.94 19.94 19.68 19.68 19.68 15.82 15.82 15.82

R13 29.0528 -89.1568 24.36 24.36 24.36 8.21 4.8 4.79 21.34 21.34 21.34 21.34 21.34 21.34 21.34 21.34 21.34

R14 29.0887 -89.0727 14.58 14.58 14.58 8.54 8.54 8.54 23.15 23.15 23.15 17.74 17.74 17.74 9.38 9.38 9.38

R15 29.1338 -89.0453 11.38 11.38 11.38 10.09 10.09 10.09 22.27 22.27 22.27 15.37 15.37 15.37 9.38 9.38 9.38

R16 29.1791 -89.0052 7.65 7.53 7.53 11.87 11.87 11.87 20.22 20.22 20.22 15.05 15.05 15.05 8.11 8.11 8.11

R17 29.2150 -89.0270 10.28 10.28 10.28 9.44 9.44 9.44 20.5 20.5 20.5 14.01 14.01 14.01 8.62 8.62 8.62

R18 29.2967 -89.1575 19.25 19.25 19.25 6.63 4.66 4.66 18.18 18.18 18.18 18.18 18.18 18.18 18.18 18.18 18.18

R19 29.3382 -89.1836 18.49 18.49 18.49 6.75 6.63 6.63 18.49 18.49 18.49 18.49 18.49 18.49 18.49 18.49 18.49

R2 28.9636 -89.4025 * 27.14 * 27.14 * 27.14 9.6 5.57 5.46 17.81 17.81 17.81 20.15 20.15 20.15 11.47 11.47 11.47

R20 29.3495 -89.2666 15.72 15.72 15.72 6.73 3.37 3.35 15.72 15.72 15.72 15.72 15.72 15.72 15.72 15.72 15.72

R21 29.3881 -89.3120 11.8 11.8 11.8 6.5 4.04 4.04 11.8 11.8 11.8 12.54 12.54 12.54 11.8 11.8 11.8

R22 29.2529 -89.1174 18.9 18.9 18.9 7.09 3.55 3.38 15.48 15.48 15.48 15.99 15.99 15.99 15.48 15.48 15.48

R23 29.7637 -89.2865 11.17 11.17 11.17 4.98 2.49 2.15 11.17 11.17 11.17 11.17 11.17 11.17 11.17 11.17 11.17

R24 29.0430 -89.3525 19.27 19.27 19.27 10.84 10.84 10.84 12.31 12.31 12.31 17.77 17.77 17.77 13 13 13

R25 30.3367 -89.1708 9.94 9.94 9.94 3.68 3.68 3.68 9.94 9.94 9.94 9.94 9.94 9.94 9.94 9.94 9.94

R26 29.0826 -89.3137 12.86 12.86 12.86 8.54 7.76 7.76 13.41 13.41 13.41 17.14 17.14 17.14 14.4 14.4 14.4

R27 29.1272 -89.3603 17.17 17.17 17.17 9.91 9.91 9.91 10.94 10.94 10.94 16.31 16.31 16.31 12.07 12.07 12.07

R28 29.1564 -89.3973 19.95 19.95 19.95 7.87 7.87 7.87 12.97 12.97 12.97 13.87 13.87 13.87 8.86 8.86 8.86

R29 29.1875 -89.4501 7.88 7.88 7.88 3.94 4.06 3.94 11.62 11.6 11.6 15.37 15.37 15.37 10 10 10

R3 28.9287 -89.4210 27.06 27.06 27.06 10.14 8.99 8.99 20.83 20.83 20.83 25.36 25.36 25.36 14.28 14.28 14.28

R30 30.3560 -89.1167 9.71 9.71 9.71 3.58 3.26 3.26 9.71 9.71 9.71 9.71 9.71 9.71 9.71 9.71 9.71

R31 29.2342 -89.4950 4.42 4.42 4.42 6.94 6.94 6.94 8.51 8.51 8.51 14.01 14.01 14.01 12.18 12.18 12.18

R32 29.2424 -89.5571 14.19 14.19 14.19 9.54 9.54 9.54 17.4 17.4 17.4 19.62 19.62 19.62 11.02 11.02 11.02

R33 29.2544 -89.6062 10.42 10.42 10.42 11.29 11.29 11.29 17.99 17.99 17.99 17.64 17.64 17.64 10.53 10.53 10.53

R34 29.2838 -89.6352 9.79 9.79 9.79 11.14 11.14 11.14 17.16 17.16 17.16 15.9 15.9 15.9 9.68 9.68 9.68

R35 29.2950 -89.6813 7.79 7.79 7.79 10.13 10.13 10.13 15.07 15.07 15.07 12.38 12.38 12.38 12.99 12.99 12.99

R36 29.3057 -89.7325 6.5 4.92 4.92 8.98 8.98 8.98 13.78 13.78 13.78 11.31 11.31 11.31 15.94 15.94 15.94

R37 29.3129 -89.7805 6.26 3.13 2.65 8.57 8.57 8.57 13.27 13.27 13.27 11.87 11.87 11.87 17.33 17.33 17.33

R38 29.3192 -89.8416 6.27 3.14 2.57 12.06 12.06 12.06 11.48 11.48 11.48 10.02 10.02 10.02 16.68 16.68 16.68

R39 29.3063 -89.8803 6.26 3.13 2.75 14.27 14.27 14.27 14.4 14.4 14.4 8.96 8.96 8.96 14.73 14.73 14.73

R4 28.9530 -89.3799 26.76 26.76 26.76 9.65 7.65 7.65 17.5 17.5 17.5 16.57 16.57 16.57 10.96 10.96 10.96

R40 29.2830 -89.9251 6.28 3.14 2.42 * 15.49 * 15.49 * 15.49 16.82 16.82 16.82 10.83 10.83 10.83 11.07 11.07 11.07

R41 30.2407 -88.7347 3.69 3.18 3.18 5.94 5.94 5.94 9.45 9.45 9.45 7.29 7.29 7.29 4.01 4.01 4.01

R42 30.2334 -88.6836 3.61 2.18 2.18 6.1 6.1 6.1 8.41 8.41 8.41 6.99 6.99 6.99 3.65 3.29 3.29

R43 30.2264 -88.6337 3.73 1.86 1.8 5.69 5.69 5.69 7.13 7.13 7.13 7.04 7.04 7.04 4.19 4.19 4.19

R44 30.2123 -88.5057 4.22 4.22 4.22 3.71 3.16 3.16 3.77 3.77 3.77 8.52 8.52 8.52 4.05 4.05 4.05

R45 30.1981 -88.4514 4.77 4.77 4.77 3.71 2.04 2.04 3.68 2.58 2.58 9.34 9.34 9.34 4 4 4

R46 30.2287 -88.3314 5.12 5.12 5.12 3.54 1.77 1.18 3.97 3.97 3.97 9.18 9.18 9.18 4.88 4.88 4.88

R47 30.2334 -88.2799 4.87 4.87 4.87 3.58 1.79 1.19 4.67 4.67 4.67 8.59 8.59 8.59 4.53 4.53 4.53

R48 30.2426 -88.2289 4.33 4.33 4.33 3.54 1.77 1.18 5.17 5.17 5.17 7.8 7.8 7.8 3.75 3.75 3.75

R49 30.2490 -88.1776 3.61 3.61 3.61 3.44 1.72 1.15 5.5 5.5 5.5 7.85 7.85 7.85 3.5 2.79 2.79

R5 28.9880 -89.3502 21.37 21.37 21.37 11.4 11.4 11.4 13.71 13.71 13.71 18.68 18.68 18.68 13.34 13.34 13.34

R50 30.2429 -88.1249 3.48 2.71 2.71 3.42 1.71 1.14 5.62 5.62 5.62 7.65 7.65 7.65 3.42 1.76 1.76

R51 30.2179 -88.0981 3.45 2.11 2.11 3.49 1.75 1.17 5.56 5.56 5.56 7.38 7.38 7.38 3.49 2.23 2.23

R52 30.2254 -88.0262 3.23 2.23 2.23 3.4 1.7 1.13 4.99 4.99 4.99 6.47 6.47 6.47 3.44 3.39 3.39

R53 30.2295 -87.9749 3.35 3 3 3.41 1.7 1.15 4.4 4.4 4.4 5.68 5.68 5.68 3.68 3.68 3.68

R54 30.2312 -87.9224 3.64 3.64 3.64 3.37 1.69 1.15 3.71 3.71 3.71 4.82 4.82 4.82 3.95 3.95 3.95

R55 30.2293 -87.8697 3.88 3.88 3.88 3.29 1.64 1.12 3.34 2.98 2.98 5.26 5.26 5.26 4.22 4.22 4.22

R56 30.3789 -89.0398 9.67 9.67 9.67 3.24 1.62 1.52 8.61 8.61 8.61 8.61 8.61 8.61 8.61 8.61 8.61

R57 30.3905 -88.9739 8.96 8.96 8.96 3.51 1.76 1.19 7.29 7.29 7.29 7.81 7.81 7.81 7.2 7.2 7.2

R58 30.0506 -89.1956 11.39 11.39 11.39 4.2 4.02 4.02 11.39 11.39 11.39 11.39 11.39 11.39 11.39 11.39 11.39

R59 30.2497 -87.6604 5.81 5.81 5.81 3.19 1.59 1.53 3.16 1.87 1.87 6.75 6.75 6.75 4.17 4.17 4.17

R6 29.0187 -89.3147 14.1 14.1 14.1 9.19 9.13 9.13 14.11 14.11 14.11 18.7 18.7 18.7 15.49 15.49 15.49

R60 29.0452 -90.7606 4.68 2.34 1.87 8.42 8.42 8.42 12.24 12.24 12.24 12 12 12 4.98 4.59 4.59

R61 29.0549 -90.7036 5.05 2.52 1.71 9.5 9.5 9.5 12.17 12.17 12.17 12.51 12.51 12.51 5.09 2.9 2.9

R62 29.0891 -90.5456 5.39 4.45 4.45 13.22 13.22 13.22 7.9 7.9 7.9 9.41 9.41 9.41 5.39 2.7 1.82

R63 29.0584 -90.4559 5.95 5.95 5.95 14.05 14.05 14.05 6.72 6.72 6.72 8.83 8.83 8.83 5.7 2.85 2.19

R64 29.0659 -90.3210 5.98 5.97 5.97 11.31 11.31 11.31 6.09 3.66 3.66 10.17 10.17 10.17 6.09 5.6 5.6

R65 29.0860 -90.2228 6.25 3.13 2.51 10.17 10.17 10.17 8.47 8.47 8.47 14.05 14.05 14.05 11.06 11.06 11.06

R66 29.1089 -90.1794 6.34 3.27 3.23 9.94 9.94 9.94 10.88 10.88 10.88 13.87 13.87 13.87 13.52 13.52 13.52

R67 29.1330 -90.1383 6.37 3.19 3.14 7.84 7.84 7.84 11.69 11.69 11.69 11.88 11.88 11.88 14.32 14.32 14.32

R68 29.1598 -90.0977 6.38 3.19 2.49 9.33 9.33 9.33 10.42 10.42 10.42 13.59 13.59 13.59 13.08 13.08 13.08

R69 29.1867 -90.0546 6.18 3.09 2.16 11.95 11.95 11.95 9.91 9.91 9.91 16.67 16.67 16.67 10.15 10.15 10.15

R7 29.0549 -89.2832 17.75 17.75 17.75 8.85 4.51 4.51 17.75 17.75 17.75 17.75 17.75 17.75 17.75 17.75 17.75

R70 29.2253 -90.0056 6.35 3.17 2.41 12.31 12.31 12.31 14.75 14.75 14.75 17.05 17.05 17.05 6.35 5.92 5.92

R71 29.2511 -89.9598 6.26 3.13 2.14 14.72 14.72 14.72 17.12 17.12 17.12 14.5 14.5 14.5 7.47 7.47 7.47

R72 30.3605 -88.8188 5.56 5.56 5.56 3.92 3.92 3.92 9.68 9.68 9.68 7.09 7.09 7.09 4.04 4.04 4.04

R73 30.2628 -87.6065 6.39 6.39 6.39 3.14 2.04 2.04 3.14 2.37 2.37 7.25 7.25 7.25 4.22 4.22 4.22

R74 30.2290 -87.8182 4.24 4.24 4.24 3.31 1.66 1.1 3.31 2.33 2.33 5.69 5.69 5.69 3.95 3.95 3.95

R75 30.2364 -87.7659 4.4 4.4 4.4 3.24 1.62 1.08 3.27 1.8 1.8 5.82 5.82 5.82 3.35 3.35 3.35

R76 30.2431 -87.7150 5.06 5.06 5.06 3.22 1.61 1.07 3.22 1.61 1.37 6.06 6.06 6.06 3.83 3.83 3.83

R77 30.3047 -89.2769 8.86 8.86 8.86 3.73 1.86 1.49 8.86 8.86 8.86 8.86 8.86 8.86 8.86 8.86 8.86

R78 30.3218 -89.2231 9.65 9.65 9.65 3.56 2.79 2.79 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.65 9.65

R8 29.0826 -89.2429 22.25 22.25 22.25 8.52 5.24 5.24 22.25 22.25 22.25 22.25 22.25 22.25 22.25 22.25 22.25

R9 29.0275 -89.2209 25.24 25.24 25.24 9.13 8.77 8.77 * 25.24 * 25.24 * 25.24 25.24 25.24 25.24 * 25.24 * 25.24 * 25.24

R79 29.0450 -90.8159 4.76 2.38 1.92 7.26 7.26 7.26 11.73 11.73 11.73 11.13 11.13 11.13 5.04 5.04 5.04

R80 29.0531 -90.8637 4.72 2.36 1.83 6.47 6.47 6.47 11.18 11.18 11.18 10.41 10.41 10.41 4.78 4.78 4.78

R81 29.0481 -90.9178 4.62 2.31 1.57 5.16 5.16 5.16 10.21 10.21 10.21 9.18 9.18 9.18 4.62 3.73 3.73

R82 29.0660 -90.9576 4.52 2.26 1.51 4.95 4.95 4.95 9.91 9.91 9.91 8.88 8.88 8.88 4.51 3.54 3.54

R83 29.1742 -91.0085 4.1 2.05 1.56 7 7 7 10.52 10.52 10.52 10.2 10.2 10.2 4.3 4.23 4.23

R84 29.1836 -91.0620 4.11 2.05 1.55 6.35 6.35 6.35 10.15 10.15 10.15 9.66 9.66 9.66 4.35 4.35 4.35

R85 29.2040 -91.1063 4.03 2.02 1.5 6.11 6.11 6.11 9.89 9.89 9.89 9.38 9.38 9.38 4.26 4.26 4.26

R86 29.2220 -91.1515 3.97 1.98 1.45 5.82 5.82 5.82 9.61 9.61 9.61 9.06 9.06 9.06 4.16 4.16 4.16

R87 29.2246 -91.2011 3.94 1.97 1.37 5.13 5.13 5.13 9.15 9.15 9.15 8.44 8.44 8.44 3.94 3.83 3.83

R88 29.2391 -91.2479 3.86 1.93 1.29 4.78 4.78 4.78 8.81 8.81 8.81 8.06 8.06 8.06 3.86 3.57 3.57

R89 29.2589 -91.2920 3.78 1.89 1.26 4.61 4.61 4.61 8.58 8.58 8.58 7.83 7.83 7.83 3.78 3.43 3.43

R90 29.2916 -91.3251 3.7 1.85 1.25 4.85 4.85 4.85 8.62 8.62 8.62 7.96 7.96 7.96 3.7 3.62 3.62

R91 28.8860 -89.4362 24.69 24.69 24.69 12.94 12.94 12.94 24.27 24.27 24.27 * 29.46 * 29.46 * 29.46 15.53 15.53 15.53

R92 30.2733 -87.5576 6.87 6.87 6.87 3.08 2.52 2.52 3.1 2.82 2.82 7.6 7.6 7.6 4.06 4.06 4.06

R93 30.2812 -87.5080 7.29 7.29 7.29 3.04 2.98 2.98 3.23 3.23 3.23 7.88 7.88 7.88 3.73 3.73 3.73

R94 30.2915 -87.4594 7.58 7.58 7.58 3.3 3.3 3.3 3.5 3.5 3.5 8.02 8.02 8.02 3.32 3.32 3.32

R95 30.2991 -87.4104 7.79 7.79 7.79 3.48 3.48 3.48 3.64 3.64 3.64 8.06 8.06 8.06 2.89 2.82 2.82

R96 30.3101 -87.3627 7.87 7.87 7.87 3.47 3.47 3.47 3.63 3.63 3.63 7.98 7.98 7.98 2.91 2.37 2.37

R97 30.3208 -87.3140 7.87 7.87 7.87 3.32 3.32 3.32 3.49 3.49 3.49 7.81 7.81 7.81 2.91 1.93 1.93

R98 30.3171 -87.2631 7.78 7.78 7.78 2.94 2.94 2.94 3.16 3.16 3.16 7.52 7.52 7.52 2.88 1.44 1.4

R99 30.3216 -87.2131 7.56 7.56 7.56 2.67 2.5 2.5 2.81 2.76 2.76 7.14 7.14 7.14 2.86 1.48 1.48

R100 30.3276 -87.1632 7.25 7.25 7.25 2.74 2.05 2.05 2.82 2.34 2.34 6.71 6.71 6.71 2.82 1.89 1.89



# + Represents Class I Area receptor. * Represents maximum 1-hr average concentration corresponding to the meteorological year and mixing height represented for each column. Lat, dd Lon, dd Receptor 2000 2004 2001 

# 2000, 2001, 2002, 2003 and 2004 Meteorology - 300m, 600m, 900m Mixing Heights OCD5 Predicted 1-hr Average NO 2 

# Concentrations - μg/m 3



# 2002 2003



# September 2011

# Table C-1. Shell Offshore, Inc. - OCD Modeling Results

Mars B Host Operations

300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m

B1 + 

# 29.4851 -89.1701 0.1 0.06 0.05 0.07 0.04 0.03 0.12 0.07 0.06 0.1 0.07 0.06 0.08 0.05 0.04

B2 + 

# 29.4623 -89.2030 0.1 0.06 0.05 0.07 0.04 0.04 0.12 0.07 0.06 0.1 0.07 0.06 0.09 0.05 0.04

C1 + 

# 29.9088 -88.8219 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

C2 + 

# 29.9524 -88.8261 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

C3 + 

# 29.8669 -88.8371 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

C4 + 

# 29.8345 -88.8373 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

C5 + 

# 29.7925 -88.8604 0.06 0.03 0.03 0.05 0.03 0.02 0.06 0.04 0.03 0.05 0.03 0.03 0.05 0.03 0.02

R1 29.0003 -89.3673 0.13 0.08 0.07 0.11 0.06 0.06 0.14 0.09 0.08 0.11 0.08 0.07 0.12 0.08 0.07

R10 29.0048 -89.1778 0.15 0.09 0.08 0.12 0.07 0.07 * 0.18 * 0.11 * 0.10 * 0.17 * 0.11 * 0.10 0.13 0.08 0.07

R11 28.9900 -89.1422 0.13 0.08 0.07 0.13 0.08 0.07 0.17 0.1 0.09 0.16 0.11 0.1 0.13 0.08 0.07

R12 29.0749 -89.1185 0.12 0.07 0.06 0.12 0.07 0.06 0.14 0.09 0.08 0.14 0.09 0.08 0.11 0.07 0.06

R13 29.0528 -89.1568 0.13 0.08 0.07 0.11 0.07 0.06 0.16 0.1 0.09 0.16 0.1 0.09 0.12 0.07 0.06

R14 29.0887 -89.0727 0.11 0.07 0.06 0.11 0.06 0.06 0.12 0.07 0.06 0.11 0.07 0.07 0.1 0.06 0.05

R15 29.1338 -89.0453 0.1 0.06 0.05 0.09 0.06 0.05 0.11 0.07 0.06 0.1 0.06 0.06 0.09 0.06 0.05

R16 29.1791 -89.0052 0.09 0.05 0.05 0.08 0.05 0.04 0.1 0.06 0.05 0.08 0.05 0.05 0.08 0.05 0.04

R17 29.2150 -89.0270 0.09 0.06 0.05 0.09 0.05 0.05 0.1 0.06 0.05 0.09 0.06 0.05 0.08 0.05 0.04

R18 29.2967 -89.1575 0.11 0.06 0.05 0.09 0.05 0.04 0.13 0.08 0.07 0.12 0.08 0.07 0.1 0.06 0.05

R19 29.3382 -89.1836 0.11 0.06 0.05 0.08 0.05 0.04 0.13 0.08 0.06 0.12 0.08 0.07 0.09 0.05 0.04

R2 28.9636 -89.4025 0.13 0.08 0.07 0.12 0.08 0.07 0.14 0.09 0.08 0.12 0.08 0.08 0.12 0.08 0.07

R20 29.3495 -89.2666 0.11 0.06 0.05 0.08 0.05 0.04 0.12 0.07 0.06 0.11 0.07 0.06 0.1 0.06 0.05

R21 29.3881 -89.3120 0.1 0.06 0.05 0.08 0.05 0.04 0.11 0.06 0.05 0.1 0.06 0.05 0.09 0.05 0.04

R22 29.2529 -89.1174 0.1 0.06 0.05 0.09 0.06 0.05 0.13 0.08 0.07 0.12 0.08 0.07 0.1 0.06 0.05

R23 29.7637 -89.2865 0.08 0.04 0.04 0.06 0.03 0.03 0.09 0.05 0.04 0.08 0.05 0.04 0.07 0.04 0.03

R24 29.0430 -89.3525 0.13 0.08 0.07 0.1 0.06 0.05 0.14 0.09 0.07 0.11 0.07 0.07 0.12 0.07 0.06

R25 30.3367 -89.1708 0.06 0.03 0.02 0.04 0.02 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.05 0.03 0.02

R26 29.0826 -89.3137 0.13 0.08 0.07 0.11 0.07 0.06 0.14 0.09 0.08 0.12 0.08 0.07 0.12 0.07 0.06

R27 29.1272 -89.3603 0.12 0.07 0.06 0.09 0.05 0.05 0.13 0.08 0.07 0.1 0.07 0.06 0.11 0.07 0.06

R28 29.1564 -89.3973 0.11 0.06 0.06 0.09 0.05 0.05 0.12 0.07 0.06 0.09 0.06 0.05 0.1 0.06 0.05

R29 29.1875 -89.4501 0.05 0.05 0.05 0.04 0.04 0.04 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05

R3 28.9287 -89.4210 0.15 0.09 0.08 0.13 0.08 0.08 0.15 0.1 0.09 0.13 0.09 0.08 0.12 0.08 0.07

R30 30.3560 -89.1167 0.06 0.03 0.02 0.04 0.02 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.05 0.03 0.02

R31 29.2342 -89.4950 0.05 0.05 0.05 0.04 0.04 0.04 0.05 0.05 0.05 0.05 0.05 0.05 0.04 0.04 0.04

R32 29.2424 -89.5571 0.1 0.06 0.05 0.09 0.06 0.05 0.11 0.06 0.06 0.09 0.06 0.05 0.08 0.05 0.05

R33 29.2544 -89.6062 0.1 0.06 0.05 0.09 0.06 0.05 0.11 0.06 0.06 0.09 0.06 0.05 0.08 0.05 0.04

R34 29.2838 -89.6352 0.1 0.06 0.05 0.09 0.05 0.05 0.1 0.06 0.05 0.09 0.05 0.05 0.08 0.05 0.04

R35 29.2950 -89.6813 0.1 0.06 0.05 0.09 0.05 0.05 0.1 0.06 0.05 0.08 0.05 0.05 0.08 0.05 0.04

R36 29.3057 -89.7325 0.09 0.05 0.05 0.08 0.05 0.04 0.09 0.05 0.05 0.08 0.05 0.05 0.08 0.05 0.04

R37 29.3129 -89.7805 0.09 0.05 0.04 0.08 0.05 0.04 0.09 0.05 0.05 0.08 0.05 0.04 0.08 0.05 0.04

R38 29.3192 -89.8416 0.09 0.05 0.04 0.07 0.04 0.04 0.09 0.06 0.05 0.07 0.05 0.04 0.08 0.05 0.04

R39 29.3063 -89.8803 0.08 0.05 0.04 0.07 0.04 0.04 0.1 0.06 0.05 0.07 0.05 0.04 0.08 0.05 0.04

R4 28.9530 -89.3799 0.13 0.08 0.08 0.12 0.07 0.07 0.15 0.09 0.08 0.12 0.08 0.07 0.12 0.08 0.07

R40 29.2830 -89.9251 0.08 0.05 0.04 0.08 0.05 0.04 0.11 0.07 0.06 0.07 0.05 0.04 0.09 0.05 0.04

R41 30.2407 -88.7347 0.04 0.02 0.02 0.04 0.02 0.02 0.05 0.03 0.02 0.04 0.02 0.02 0.04 0.02 0.02

R42 30.2334 -88.6836 0.04 0.02 0.02 0.04 0.02 0.02 0.05 0.03 0.02 0.04 0.02 0.02 0.04 0.02 0.02

R43 30.2264 -88.6337 0.04 0.02 0.02 0.04 0.02 0.02 0.05 0.03 0.02 0.03 0.02 0.02 0.04 0.02 0.02

R44 30.2123 -88.5057 0.04 0.02 0.02 0.04 0.02 0.02 0.04 0.02 0.02 0.04 0.02 0.02 0.04 0.02 0.02

R45 30.1981 -88.4514 0.04 0.02 0.02 0.04 0.02 0.02 0.04 0.02 0.02 0.04 0.02 0.02 0.03 0.02 0.02

R46 30.2287 -88.3314 0.04 0.02 0.02 0.04 0.02 0.02 0.04 0.02 0.01 0.04 0.02 0.02 0.03 0.02 0.01

R47 30.2334 -88.2799 0.04 0.02 0.01 0.04 0.02 0.02 0.04 0.02 0.01 0.03 0.02 0.02 0.03 0.02 0.01

R48 30.2426 -88.2289 0.03 0.02 0.01 0.04 0.02 0.01 0.03 0.02 0.01 0.03 0.02 0.02 0.03 0.02 0.01

R49 30.2490 -88.1776 0.03 0.02 0.01 0.04 0.02 0.01 0.03 0.02 0.01 0.03 0.02 0.02 0.03 0.02 0.01

R5 28.9880 -89.3502 0.13 0.08 0.07 0.11 0.07 0.06 0.15 0.09 0.08 0.12 0.08 0.07 0.12 0.08 0.07

R50 30.2429 -88.1249 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.02 0.02 0.03 0.02 0.01

R51 30.2179 -88.0981 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.02 0.02 0.03 0.02 0.01

R52 30.2254 -88.0262 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R53 30.2295 -87.9749 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R54 30.2312 -87.9224 0.03 0.02 0.01 0.03 0.02 0.01 0.03 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R55 30.2293 -87.8697 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R56 30.3789 -89.0398 0.05 0.03 0.02 0.04 0.02 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.05 0.03 0.02

R57 30.3905 -88.9739 0.05 0.03 0.02 0.05 0.02 0.02 0.06 0.03 0.03 0.06 0.04 0.03 0.05 0.03 0.02

R58 30.0506 -89.1956 0.07 0.04 0.03 0.05 0.03 0.02 0.08 0.04 0.04 0.07 0.04 0.04 0.06 0.03 0.03

R59 30.2497 -87.6604 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R6 29.0187 -89.3147 0.14 0.09 0.08 0.11 0.07 0.06 0.15 0.09 0.08 0.13 0.09 0.08 0.13 0.08 0.07

R60 29.0452 -90.7606 0.06 0.04 0.03 0.05 0.03 0.03 0.08 0.04 0.04 0.06 0.04 0.03 0.07 0.04 0.03

R61 29.0549 -90.7036 0.06 0.04 0.03 0.06 0.03 0.03 0.08 0.05 0.04 0.07 0.04 0.04 0.07 0.04 0.03

R62 29.0891 -90.5456 0.06 0.04 0.03 0.06 0.04 0.03 0.09 0.05 0.05 0.08 0.05 0.04 0.08 0.04 0.04

R63 29.0584 -90.4559 0.06 0.04 0.03 0.06 0.04 0.03 0.1 0.06 0.05 0.08 0.05 0.05 0.08 0.05 0.04

R64 29.0659 -90.3210 0.08 0.05 0.04 0.07 0.04 0.04 0.11 0.06 0.05 0.08 0.05 0.05 0.08 0.05 0.04

R65 29.0860 -90.2228 0.08 0.05 0.04 0.08 0.05 0.04 0.11 0.07 0.06 0.08 0.05 0.05 0.08 0.05 0.04

R66 29.1089 -90.1794 0.08 0.05 0.04 0.08 0.05 0.04 0.11 0.07 0.06 0.08 0.05 0.05 0.08 0.05 0.04

R67 29.1330 -90.1383 0.08 0.05 0.04 0.08 0.05 0.04 0.11 0.07 0.06 0.08 0.05 0.05 0.08 0.05 0.04

R68 29.1598 -90.0977 0.09 0.05 0.05 0.08 0.05 0.04 0.11 0.07 0.06 0.08 0.05 0.05 0.09 0.05 0.04

R69 29.1867 -90.0546 0.09 0.05 0.05 0.09 0.05 0.04 0.11 0.07 0.06 0.08 0.05 0.05 0.09 0.05 0.04

R7 29.0549 -89.2832 0.14 0.09 0.08 0.12 0.07 0.06 0.15 0.09 0.08 0.14 0.09 0.08 0.13 0.08 0.07

R70 29.2253 -90.0056 0.08 0.05 0.04 0.08 0.05 0.04 0.11 0.07 0.06 0.08 0.05 0.04 0.09 0.05 0.04

R71 29.2511 -89.9598 0.08 0.05 0.04 0.08 0.05 0.04 0.12 0.07 0.06 0.08 0.05 0.04 0.09 0.05 0.04

R72 30.3605 -88.8188 0.04 0.02 0.02 0.04 0.02 0.02 0.05 0.03 0.02 0.04 0.03 0.02 0.04 0.02 0.02

R73 30.2628 -87.6065 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.03 0.01 0.01 0.03 0.02 0.01

R74 30.2290 -87.8182 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R75 30.2364 -87.7659 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R76 30.2431 -87.7150 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.03 0.02 0.01 0.03 0.02 0.01

R77 30.3047 -89.2769 0.06 0.03 0.02 0.05 0.02 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.05 0.03 0.02

R78 30.3218 -89.2231 0.06 0.03 0.02 0.04 0.02 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.05 0.03 0.02

R8 29.0826 -89.2429 0.14 0.08 0.07 0.11 0.06 0.06 0.16 0.1 0.08 0.14 0.09 0.08 0.12 0.07 0.06

R9 29.0275 -89.2209 0.15 0.09 0.08 0.11 0.07 0.06 0.18 0.11 0.09 0.16 0.1 0.09 * 0.14 0.08 0.07

R79 29.0450 -90.8159 0.06 0.03 0.03 0.05 0.03 0.03 0.07 0.04 0.04 0.06 0.04 0.03 0.07 0.04 0.03

R80 29.0531 -90.8637 0.06 0.03 0.03 0.05 0.03 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.07 0.04 0.03

R81 29.0481 -90.9178 0.05 0.03 0.03 0.05 0.03 0.02 0.07 0.04 0.03 0.06 0.04 0.03 0.06 0.04 0.03

R82 29.0660 -90.9576 0.05 0.03 0.03 0.05 0.03 0.02 0.07 0.04 0.03 0.06 0.03 0.03 0.06 0.03 0.03

R83 29.1742 -91.0085 0.05 0.03 0.03 0.05 0.03 0.02 0.06 0.04 0.03 0.06 0.03 0.03 0.06 0.03 0.03

R84 29.1836 -91.0620 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.04 0.03 0.05 0.03 0.03 0.06 0.03 0.03

R85 29.2040 -91.1063 0.05 0.03 0.02 0.04 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.03 0.06 0.03 0.02

R86 29.2220 -91.1515 0.05 0.03 0.02 0.04 0.02 0.02 0.06 0.03 0.03 0.05 0.03 0.03 0.06 0.03 0.02

R87 29.2246 -91.2011 0.05 0.03 0.02 0.04 0.02 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

R88 29.2391 -91.2479 0.04 0.03 0.02 0.04 0.02 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

R89 29.2589 -91.2920 0.04 0.02 0.02 0.04 0.02 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

R90 29.2916 -91.3251 0.04 0.02 0.02 0.04 0.02 0.02 0.05 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02

R91 28.8860 -89.4362 * 0.16 * 0.1 * 0.09 * 0.14 * 0.09 * 0.09 0.16 0.11 0.1 0.14 0.1 0.09 0.13 * 0.09 * 0.08

R92 30.2733 -87.5576 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R93 30.2812 -87.5080 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R94 30.2915 -87.4594 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R95 30.2991 -87.4104 0.03 0.02 0.01 0.03 0.02 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R96 30.3101 -87.3627 0.03 0.02 0.01 0.03 0.01 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R97 30.3208 -87.3140 0.03 0.02 0.01 0.03 0.01 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R98 30.3171 -87.2631 0.03 0.02 0.01 0.03 0.01 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R99 30.3216 -87.2131 0.03 0.02 0.01 0.03 0.01 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01

R100 30.3276 -87.1632 0.03 0.02 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.02 0.01 0.01 0.03 0.01 0.01



# + Represents Class I Area receptor. 2000, 2001, 2002, 2003 and 2004 Meteorology - 300m, 600m, 900m Mixing Heights OCD5 Predicted Annual Average NO 2 

# Concentrations - μg/m 3



# * Represents maximum annual average concentration corresponding to the meteorological year and mixing height represented for ea ch column. Lat, dd Lon, dd Receptor 2000 2004 2001 2002 2003



# September 2011

# A TTACHMENT 

# D: M ODELING 

# R ESULTS FOR 

# B RETONTable D-1. OCD Modeled Concentrations for Breton Receptors - 1-Hour NO2StandardMars B Host OperationsReceptor Lat, dd Lon, dd 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 mB1 29.4851 -89.1701 16.3 16.3 16.3 5.96 5.62 5.62 16.3 16.3 16.3 16.3 16.3 16.3 16.3 16.3 16.3B2 29.4623 -89.2030*16.74 *16.74 *16.746.12 6.11 6.11*16.74 *16.74 *16.74 *16.74 *16.74 *16.74 *16.74 *16.74 *16.74C1 29.9088 -88.8219 4.41 3.96 3.96*7.02 *7.02 *7.0211.39 11.39 11.39 8.7 8.7 8.7 4.78 4.78 4.78C2 29.9524 -88.8261 4.36 4.3 4.3 6.63 6.63 6.63 11.4 11.4 11.4 8.45 8.45 8.45 4.54 4.54 4.54C3 29.8669 -88.8371 4.54 4.23 4.23 7.12 7.12 7.12 11.79 11.79 11.79 8.91 8.91 8.91 4.88 4.88 4.88C4 29.8345 -88.8373 4.59 4.04 4.04 7.38 7.38 7.38 11.84 11.84 11.84 9.09 9.09 9.09 5 5 5C5 29.7925 -88.8604 4.77 4.61 4.61 7.35 7.35 7.35 12.46 12.46 12.46 9.3 9.3 9.3 5.04 5.04 5.04OCD5 Predicted Exploration Plan 1-hr Average NO2Concentrations2000, 2001, 2002, 2003 and 2004 Meteorology - 300m, 600m, 900m Mixing Heights* Represents maximum 1-hr average concentration corresponding to the meteorological year and mixing height represented for eachcolumn.200020042001NO2CONCENTRATION (μg/m3)Year2002 2003September 2011Table D-2. OCD Modeled Concentrations for Breton Receptors - Annual NO2StandardMars B Host OperationsReceptor Lat, dd Lon, dd 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 m 300 m 600 m 900 mB1 29.4851 -89.1701 0.1 0.06 0.05 0.07 0.04 0.03 0.12 0.07 0.06 0.1 0.07 0.06 0.08 0.05 0.04B2 29.4623 -89.2030*0.1 *0.06 *0.05 *0.07 *0.04 *0.04 *0.12 *0.07 *0.06 *0.1 *0.07 *0.06 *0.09 *0.05 *0.04C1 29.9088 -88.8219 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02C2 29.9524 -88.8261 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02C3 29.8669 -88.8371 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02C4 29.8345 -88.8373 0.05 0.03 0.02 0.05 0.03 0.02 0.06 0.03 0.03 0.05 0.03 0.02 0.05 0.03 0.02C5 29.7925 -88.8604 0.06 0.03 0.03 0.05 0.03 0.02 0.06 0.04 0.03 0.05 0.03 0.03 0.05 0.03 0.022003* Represents maximum annual average concentration corresponding to the meteorological year and mixing height represented for each column.2000YearNO2CONCENTRATION (μg/m3)OCD5 Predicted Exploration Plan Annual Average NO2Concentrations2000, 2001, 2002, 2003 and 2004 Meteorology - 300m, 600m, 900m Mixing Heights20042001 2002September 2011