UNITED STATES GOVERNMENT MEMORANDUM

To: Public Information (MS 5030)

Plans Section, Office of Field Operations (MS 5231)

Public Information copy of Exploration Plan

Control # - R-05988

Type - Revised Exploration Plan

Lease(s) - OCS-G27259 Block - 79 Mississippi Canyon Area

Operator - LLOG Exploration Offshore, L.L.C.

Wells A&B & Wellheads/Manifolds

Semisubmersible or DP Semisubmersible

Attached is a copy of the subject plan for public comments on issues that

should be addressed in an Environmental Assessment.

It has been deemed submitted as of this date and is under review for approval.

Ronald O'Connor

Plan Coordinator Description -

Rig Type - Subject: From: March 11, 2014

## ALABAMA COASTAL ZONE MANAGEMENT

CONSISTENCY CERTIFICATION

REVISED EXPLORATION PLAN

MISSISSIPPI CANYON BLOCK 079

OCS

- G 27259

The OCS related oil and gas development activities having potential impact on the Alabama

Coastal Zone are based on the location of the proposed facilities, access to those sites, best practical techniques for operations and production equipment, guidelines for the prevention of adverse environmental effects, effective environmental protection, emergency plans and contingency plans. Alabama policies have been addressed below or are cross referenced to the appropriate sections of the Plan:

Topic Cross

Reference Comments

Coastal Resource Use Policies Coastal Development Dock and port facilities in Louisiana will be used. There

wi ll be no new construction, dredging or filling in

Alabama state waters. There will be no new commercial development or capital improvements in Alabama’s coastal zone, nor will there be any employment effects. Mineral Resource Exploration

and Extraction Proposed development operations will take place 81

statute miles from Alabama’s coastline Commercial Fishing Appendix H Hazard Management Appendix C A Shallow Hazards Report was previously submitted to BOEM in order to identify and assess the seafloor a nd shallow geologic conditions in this block

Shoreline Erosion Appendix H Proposed development operations will take place 81

statute miles from Alabama’s coastline

Recreation Appendix H Transportation Appendix B

Natural Resource Protection

Policies Biological Productivity Appendix H Water Quality Appendix H

Water Resources Appendix H Air Quality Appendix G Wetlands and Submerged

Grassbeds Appendix H

Beach and Dune Protection Appendix H

Wildlife Habitat Protection Appendix H Endangered Species Appendix H

Cultural Resources Protection Appendix D Mississippi Canyon Block 079 has been determined to have a high potential for containing archaeological properties. An archaeological report was submitted to BOEM under separate cover.

# LLOG EXPLORATION OFFSHORE, L.L.C.

1001 Ochsner Boulevard, Suite 200 Covington, Louisiana 70433



# REVISED EXPLORATION PLAN

OCS

- G

- 27259

MISSISSIPPI CANYON BLOCK 079

PREPARED BY:

Kathy Gowland Regulatory Specialist

985

- 801

- 4300 (Main)

985

- 801

- 4317 (Direct)

kathygo@llog.com

October 9, 2013

### LLOG EXPLORATION OFFSHORE, L.L.C.

INITIAL EXPLORATION PLAN

OCS

- G

- 27259

MISSISSIPPI CANYON BLOCK 079

APPENDIX A Plan Contents

APPENDIX B General Information

APPENDIX C Geological, Geophysical Information

APPENDIX D H2S Information

APPENDIX E Bio logical, Physical and Socioeconomic Information

APPENDIX F Waste and Discharge Information

APPENDIX G Air Emissions Information

APPENDIX H Oil Spill Information

APPENDIX I Environmental Monitoring Information

APPENDIX J Lease Stipulation Infor mation

APPENDIX K Environmental Mitigation Measures Information

APPENDIX L Related Facilities and Operations Information

APPENDIX M Support Vessels and Aircraft Information

APPENDIX N Onshore Support Facilities Information

APPENDIX O Coastal Zone Management Act (CZMA) Information

APPENDIX P Environmental Impact Analysis

APPENDIX Q Administrative InformationRevised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## APPENDIX A

PLAN CONTENTS (30 CFR Part 250.211 and 250.241)

(A) 

## Plan I nformation

In accordance with 30 CFR 250.211 and 250.241(a), NTL No. 2008

- G04 and

NTL 2010

- N06, LLOG Exploration Offshore, LLC proposes to revise our previously approved Initial Explo ration Plan , approved on September 4, 2007 (Control No. N

- 09032 ) for the drilling, completion and testing and installation of

subsea wellhead and/or manifold for Locations A and B

. This plan is being revised to add the possible use of a DP Semisubmersible Rig and to include the required NTL 2010

- N06 data.

Included as Attachment A is Form MMS 137 “OCS Plan Information Form”, which provides for the drilling, completion , and testing of Well Locations A and

B.

( B ) 

## Location

Attachment B

– Well Location Pla t
Attachment C

– Bathymetry Map detailing the proposed surface location

disturb a nce area with the proposed anchor radius of the drilling rig.

(C) 

## Safety & Pollution F eatures

LLOG will utilize either a DP semi

- submersible drilling rig or a semi

- sub mersible rig for the proposed operations. A description of the drilling unit is included on the OCS Plans Information Form. Rig specifications will be made part of the Application for Permit to Drill.

Safety features on the drilling unit will include we ll control, pollution prevention, and blowout prevention equipment as described in Title 30 CFR Part 250, Subparts C, D, E and G; and further clarified by BOEM’s Notices to Lessees, and currently policy making invoked by BOEM, EPA and USCG. Appropriate li fe rafts, life jackets, ring buoys, etc., will be maintained on the facility at all times.

Pollution prevention measures include installation of curbs, gutters, drip pans, and drains on the drilling deck areas to collect all contaminants and debris

.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

### D

. 

## Storage Tanks and Vessels

The following table details the storage tanks and/or production vessels that will store oil (capacity greater than 25 bbls. or more) and be used to support the proposed activities (MODU, barges, platforms, etc.):

DP Semi

- subme rsible Rig:

Type of Storage Tank Type of Facility Tank Capacity (bbls) Number of

tanks Total Capacity

(bbls) Fluid Gravity (API)

Fuel Oil (Marine Diesel) DP Semi

Submersible 164 1 164 30

Fuel Oil Day 367 2 734 30 Emergency

Generator 31 1 31 30

Forwa rd Hull

Fuel Oil 4634 2 9268 30

Lower Aft Hull

Fuel Oil 3462 2 6924 30

Lube Oil

Services 117/10.5/4.6 3 132 45

Dirty Lube Oil 38/28 2 66 45

Dirty Bilge 190 4 760 10



### Semi

- submersible Rig:

Type of Storage Tank Type of Facility Tank Capacity

(bbls ) Number of

tanks Total Capacity

(bbls) Fluid Gravity (API)

Fuel Oil (Marine Diesel) Semi

Submersible 95.24 2 190.5 No. 2 Diesel

- 43

2917.8 4 11,671.2

Total 11,861.7



## E. Pollution P revention M easures

Not applicable. The State of Florida is not an affected State by the proposed activities in this plan.



## F. Additional M easures

LLOG does not propose any additional safety, pollution prevention, or early detection measures, beyond those required in 30 CFR 250 and per December 13,

2010

– Guidan ce for Deepwater Drillers to Comply with Strengthened Safety and

Environmental Standards.

# OCS PLAN INFORMATION FORM

Attachment A (P ublic Information)

### U.S. Department of the Interior OMB Control Number: 1010-0151 Bureau of Ocean Energy Management OMB Approval Expires: 12/31/14



### OCS PLAN INFORMATION FORM

General Information

Type of OCS Plan: Exploration Plan (EP) Devel opment Operations Coordination Document (DOCD)

Company Name: BOEM Operator Number:

Address: Contact Person:

Phone Number:

E-Mail Address:

If a service fee is required under 30 CFR 550.125(a), provide the Amount paid Receipt No.



### Project and Worst Case Discharge (WCD) Information

Lease(s): Area: Block(s): Project Name (If Applicable):

Objective(s) Oil Gas Sulphur Salt Onshore Support Base(s):

Platform/Well Name: Total Volume of WCD: API Gravity:

Distance to Closest Land (Miles): Volume from uncontrolled blowout:

Have you previously provided information to verify the calculations and assumptions for your WCD? Yes No

If so, provide the Control Number of the EP or DOCD with which this information was provided

Do you propose to use new or unusual technology to conduct your activities? Yes No

Do you propose to use a vessel with anchors to install or modify a structure? Yes No

Do you propose any facility that will serve as a host facility for deepwate r subsea development? Yes No



### Description of Proposed Activities and Tentative Schedule (Mark all that apply)

Proposed Activity Start Date End Date No. of Days

Exploration drilling

Development drilling

Well completion

Well test flaring (for more than 48 hours)

Installation or modification of structure

Installation of production facilities

Installation of subsea wellheads and/or manifolds

Installation of lease term pipelines

Commence production

Other (Specify and attach description)



### Description of Drilling Rig Description of Structure

Jackup Drillship Caisson Tension leg platform

Gorilla Jackup Platform rig Fixed platform Compliant tower

Semisubmersible Submersible Spar Guyed tower

DP Semisubmersible Ot her (Attach Description)

Drilling Rig Name (If Known): Floating production

system Other (Attach Description)



### Description of Lease Term Pipelines

From (Facility/Area/Block) To (Facility/Area/Block) Diamet er (Inches) Length (Feet)



### Form BOEM- 0137 (December 2011 - Supersedes all previous editi ons of this form which may not be used.) Page 1 of 4

# Schedule of Activities

WELL /

EVENT SPUD TD COMPL
START COMPL
FINISH DESCRIPTION NO OF DAYS

MC 79 "A" 1

- May

- 14 2 2

- June

- 14 DRILL 52

MC 79 "A" 2 2

- June

- 14 27

- July

- 14 COMPLETE 35

MC 79 "B" 1

- J an

- 1 5 20

- Feb

- 1 5 DRILL 50

MC 79 "B" 20

- Feb

- 15 27

- Mar

- 1 5 COMPLETE 35

### Proposed Well/Structure Location

Well or Structure Name/Number (If rena ming well or structure, reference previous name): Subsea Completion

Anchor Radius (if applicable) in feet: Yes No

Surface Location Bottom-Hole Location (For Wells)

Lease No. OCS OCS

Area Name

Block No.

Blockline
Departures
(in feet) N/S Departure: F L N/S Departure: F L

E/W Departure: F L E/W Departure: F L

Lambert X-Y

coordinates X: X:

Y: Y:

Latitude/ Longitude Latitude Latitude

Longitude Longitude

TVD (Feet): MD (Feet): Water Depth (Feet):



### Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)

Anchor Name

or No. Area Block X Coordinate Y Coordinate Length of Anchor

Chain on Seafloor

X = Y =

X = Y =

X = Y =

X = Y =

X = Y =

X = Y =

X = Y =

X = Y =

Paperwork Reduction Act of 1995 Statement: The Paperwork Reduction Act of 1995 (44 U.S.C. Chapter 35) requires us to inform you that BOEM collects this information as part of an applicant’s Exploration Pl an or Development Operations Coordination Document submitted for BOEM approval. We use the information to facilitate our review and data entry for OCS plans. We will protect proprietar y data according to the Freedom of Info rmation Act and 30 CFR 550.197. An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid Office of Management and Budget Control Number. The use of this form is voluntary. The public reporting burden for this form is included in the burden for preparing Exploration Plans and Development Operations

Coordination Documents. We estimate th at burden to average 600 hours per re sponse, or 640 with an accompanying EP (1,000 hours in AKOCSR), or 690 (1,700 in AKOCSR) with an accompanying DPP or DOCD, including the time for reviewing instructions, gathering and maintaining data, and co mpleting and reviewing the forms associated with subpart B. Direct comments regarding the burden estimate or any other aspect of this form to the Information Collection Clearance Officer, Bureau of Ocean Energy Manageme nt, 381 Elden Street , Herndon, VA 20170. 

### 2

OCS PLAN INFORMATION FORM ( CONTINUED ) Include one copy of this page for each proposed well/structure

FORM BOEM-0137 (December 2011 - Supersedes all previous editions of fo rm BOEM-0137 which may not be used.) Page 2 of 2

# WELL LOCATION PLAT

Attachment B (P ublic Informat ion)X = 1,235,520’X = 1,251,360’ Y = 10,501,920’

Y = 10,486,080’ B

A

1 

# MC 79

LLOG EXPLORATION OFFSHORE, INC.

OCS

- G 27259 4353’ FEL 7255’ FEL2239’ FNL1652’ FNL

SURFACE LOCATION A: X: 1,247,007’ Y:10,499,681’ Long:

- 88 deg. 13 min. 48.659 sec Lat: 28 deg. 55 min. 36.037 sec (NAD27)

SURFACE LOCATION B: X: 1,244,105’ Y:10,500,268’ Long:

- 88 deg. 14 min. 21.390 sec Lat: 28 deg. 55 min. 41.550 sec (NAD27) Surface

Loc

Surface

Loc

Exxon

OCS

- G

- 9776

15,250’



# LLOG EXPL OFFSHORE

Mississippi Canyon Block 79

Gulf of Mexico



# LOCATION MAP

04/07 Geo: John Doughtie 0’ 1000’ 2000’ 

# PUBLICRevised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# BATHYMETRY MAP

Attachment C (Public Information)!(!(MC 35G26234Eni PetroleumMC 79G27259LLOG Bluewater HoldingsMC 80Not LeasedMC 36Not LeasedMC 78G31478Stone EnergyMC 34G31476Stone EnergyMC 79-BMC 79-A

Inl i ne 1 8 500 Inlin e 1 84 5 0 C r o s s l i n e 1 4 6 0 0

Inl i ne 18550

C r o s s l i n e 1 4 5 5 0 Inlin e 1 84 0 0 C r o s s l i n e 1 4 6 5 0

C r o s s l i n e 1 4 5 0 0 C r o s s l i n e 1 4 7 0 0

Inli n e 18600

C r o s s l i n e 1 4 4 5 0 Inline 18350 C r o s s l i n e 1 4 7 5 0

C r o s s l i n e 1 4 4 0 0 C r o s s l i n e 1 4 8 0 0 I n li n e 1865 0

C r o s s l i n e 1 4 3 5 0

I nl ine 1830 0 C r o s s l i n e 1 4 8 5 0 C r o s s l i n e 1 4 3 0 0

C r o s s l i n e 1 4 9 0 0 I nl i n e 1870 0

C r o s s l i n e 1 4 2 5 0

I n l i n e 1 8 2 5 0 C r o s s l i n e 1 4 9 5 0 C r o s s l i n e 1 4 2 0 0

C r o s s l i n e 1 5 0 0 0 3 , 6 0 0 3 , 7 0 0 3 , 8 0 0

3 , 9 0 0

3 , 5 0 0 4 , 0 0 0 4 , 1 0 0 4 , 2 0 0 3

, 7 0 0

3 , 6 0 0 3 , 6 0 03,600

3 , 7 0 0 3 , 5 0 0Geodetic Datum: NAD27Projection: UTMZone: 16NGrid Units: FeetInterpretation By: GEMS, 2007Cartography: Sandra R. MilsonProject No.: 13-05-07Date: September 2013Map Prepared by:Berger Geosciences, LLC.Block 79Mississippi Canyon AreaGulf of MexicoMap 1Bathymetry3LegendÎLat/Long Grid Points0 1,000 2,000 3,000 4,000500U.S. Survey FeetMississippi CanyonStudy AreaUTM Northing & Easting Grid Lines**IMPORTANT NOTICE**This map is not intended for navigation purposes.Public information obtained from BOEM database (September 2013).1:12,000Scale =3-D Seismic Inlines & CrosslinesSeafloor Assessment Area!(Proposed Wells2,000-ft Radius Circle(as per NTL 2009-G40)10,000-ft Maximum Anchor Radius(as per LLOG's instructions)1,000-ft Buffer from Maximum Anchor Radius(as per NTL 2009-G40)100-ft Contours20-ft Contours3,70010,510,000 N10,490,000 N3,80036" X 28"Grid Information:Data Source: 3-D SeismicMethod: KrigingSpacing: 30 ftSearch Radius: 150 ftContour Interval: 20 ftDepth(Below Sea Level)4,266 ft3,413 ft



# 1,240,000 E 1,250,000 E10,500,000 N 3 , 6 0 0



### 88°16'0"W28°54'0"N



### 88°16'0"W28°56'0"N 

### 88°12'0"W28°54'0"N



### 88°12'0"W28°56'0"NRevised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## APPENDIX B

GENERAL INFORMATION (30 CFR Part 250.213 and 250.243)

A. Applications and Permits

There are no Federal/State applications to be submitted for the activities provided

for i n this Plan (exclusive to BOEMRE permit applications and general permits issued by the EPA and COE)

Application/Permit Issuing Agency Status

N/A



## B. Drilling Fluids

Type of Drilling Fluid Estimated Volume of Drilling Fluid to be used per Well

Water Based (seawater, freshwater, barite) See Appendix F, Table 1 of this Plan

Oil

– based (diesel, mineral oil) N/A Synthetic

- based (internal olefin, ester) See Appendix F, Table 2 of this Plan



## C. New Or Unusual Technology

LLOG does not propose using any new and/or unusual technology for the operations proposed in this Initial Plan.



## D. Bonding Statement

The bond requirements for the activities and facilities proposed in this Initial Exploration Plan are satisfied by an area wide bond, furnished and maintained

a ccording to 30 CFR Part 256; subpart I; NTL No. 2000

- G16, “Guidelines for General Lease Surety Bonds,” and additional security under 30 CFR 256.53(d)

and NTL No. 2008

- N07 “Supplemental Bond Procedures.”



## E. Oil Spill Responsibility (OSFR)

LLOG Exploration Of fshore, L.L.C (MMS Co. No. 02058) will demonstrate oil spill financial responsibility for the facilities proposed in this Initial EP according to 30 CFR Part 253, and NTL No. 2008

- N05 “Guidelines for Oil Spill Financial Responsibility (OSFR) for Covered Fa cilities.”Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## F. Deepwater Well Control Statement

LLOG Exploration Offshore, L.L.C. (MMS Co. No. 02058) has the financial capability to drill a relief well and conduct other emergency well control operations.



## G. Blowout Scenario

The Worst Case Dischar ge Calcula tions (Proprietary) are included with the Proprietary copy of this Revised Exploration Plan as Attachment D

. Blowout Scenario, including Site Specific Proposed Relief Well and Intervention Planning and Relief Well Response Time Estimate (Public Informati on) follows as

Attachment D

- 1

.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# NTL 2010

- N06 Data



# WORST CASE DISCHARGE CALCULATION

Attachment D

(Proprietary Information)Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# NTL 2010

- N06 Data



# BLOWOUT SCENARIO

Attachment D

- 1

(Public Information)BLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 10/2/2013 Page 1 of 7
Confidential

1 BLOWOUT SCENA R IO

Pursuant with 30 CFR 250.213(g), 250.219, 250,250 and NTL 2010

- N06 the following attachment provides a blowout scenario description, information regarding any oil spill, WCD results and assumptions of potential spill and additional measu res taken to firstly enhance the ability to prevent a blowout and secondly to manage a blowout scenario if it occurred.

INFORMATION REQUIREMENTS

PROPOSED PROSPECT INFORMATION

The proposed exploratory well and any subsequent development wells locat ed in MC 79 will potentially

serve as a tied back via subsea infrastructure to a host facility not yet determined

.

PROPOSED WELLS WD (FT) NAD 27 Co

- ordinates (X) NAD 27 Co

- ordinates (Y)

MC 79

- A OCS

- G

- 2 7259 3868’ 1 ,247,007’ 10,4 4 9

, 681 ’
MC 79

– B OCS

- G

- 2 7259 37 8 2’ 1,2 44

, 105 ’ 10, 500

, 268 ’

PROPOSED RELIEF WELL INFORMATION

Below are relief well sites proposed for the respective wells and were presented in the EP plan s for the

pro s pects.

MC 79

– A Relief Well Sites

MC 79

– A

- 1 OCS

- G

- 2 7259 MC 79 S W Relief Well A

- 1 1,2 45

, 560 ’ 10,4 9 7

, 060 ’
MC 79

– A

- 2 OCS

- G

- 2 7259 MC 79 S E Relief Well A

- 2 1,2 48

, 865 ’ 10,4 9 7, 850 ’
MC 79

– A

- 3 OCS

- G

- 2 7259 MC 79 E Relief Well A

- 3 1,2 49

, 6 75 ’ 10,4 99

, 680 ’

MC 79

– B Relief Well Sites

MC 79

– B

- 1 OCS

- G

- 2 7259 MC 79 W NW Relief Well B

- 1 1,24 1,345 ’ 10, 501

, 360 ’
MC 79

– B

- 2 OCS

- G

- 2 7259 MC 79 W SW Relief Well B

- 2 1, 241 ,5 30 ’ 10,4 99

, 350 ’
MC 79

– B

- 3 OCS

- G

- 2 7259 MC 79 S Relief Well B

- 3 1,2 43,900 ’ 10,4 97

, 525 ’

INFORMATION REQUIREMENTS

A) Blowout scenario

The MC 79 wells to be drilled to potential targets are outlined in the Geological and Geophysical Information Section of this plan utilizing a typical subsea wellhead system , conductor, surface and intermediate casing strings from a pre

- existing wellbore and a M ODU rig with marine riser and a subsea BOP system. A hydrocarbo n influx and a well control event occurr ing from the objective sand

is modeled with no drill pipe or obstructions in the wellbore followed by a failure of the subsea BOP’ s and loss of well control at the seabed. The simulated flow and worst case discharge (WCD) results for all wells are calculated and the highest WCD is used for this unrestricted blowout scenario.BLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 2/19/2014 Page 2 of 7
Confidential

2 B) Estimated flow rate of the potential blowout (Maximum Case)

Category Revised EP Type of Activity Producing Facility Location (area / blo ck) MC 79

- 1 Facility Designation MODU Distance to Nearest Shoreline (miles)

~ 4 9 Uncontrolled Blowout (Volume per day)

- Producing 75

, 329 bbls Type of Fluid Crude and Gas

C) Total volume and maximum duration of the potential blowout

Duration of Flow (d ays) 83 days total (see Relief Well Response Estimate below ) Total Volume of Spill (bbls) 4

. 63 MMBO based on 83 days of modeled uncontrolled flow

based on decreasing daily volume for the blowout duration

D) Assumptions and calculations used in determining the worst case discharge

See Attachment D ( Omitted from Public Information Copies )

E) Potential for the well to bridge over

Mechanical failure/collapse of the borehole in a blowout scenario is influenced by several factors including in

- situ stress, rock strength and fluid velocities at the sand face. Given the substantial fluid velocities inherent in the WCD, and the scenario as defined where the formation is not supported by a cased and cemented wellbore, it is possible that the borehole may fall/collap se/bridge over within a span of a few days, significantly reducing the outflow of the rates. For this blowout scenario, no bridging is considered.

F) Likelihood for intervention to stop blowout

The likelihood of surface intervention to stop a blowout is based on some of the following equipment specific to potential MODU’s to be contracted for this well. It is reasonable to assume that the sooner you are able to respond to the initial blowout, the better likelihood there is to control and contain the

even t due to reduced pressures at the wellhead

, less exposure of well fluids to erode and compromise the well control equipment, and less exposure of hydrocarbons to the surface to safeguard personnel an d equipment in an emergency situ ation. This equipment in cludes:

• Secondary Acoustic BOP Control System

– typically fitted on DP MODU’s presently operating in the GOM. This system has the ability to communicate and function specific BOP controls from the surface in the event of a failure of the primary umbilica l control system. This system typically can establish BOP controls from the surface acoustic system package on the rig or by deploying a second acoustic package from a separate vessel of opportunity. This system may not be included on all MODU’s such as 4 th generation moored rigs. This system is typically configured to function the following:

- Blind shear ram close

- Pipe ram close

- LMRP disconnect

• ROV Intervention BOP Control System

– includes one or more ROV intervention panels
mounted on the subsea BOP’ s located on the seabed allows a ROV utilizing standard ROV stabs to access and function the specific BOP controls. These functions will be tested at theBLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 10/2/2013 Page 3 of 7
Confidential

3 surface as part of the required BOP stump test and selectively at the seafloor to ensure proper functionality. These function include the following (at a minimum):

- Blind shear ram close

- Pipe ram close

- LMRP disconnect

- WH disconnect

• Deadman / Autoshear function

– typically fitted on DP MODU’s and but to be on all MODU’s operating in the GOM according to new requirements, this equipment allows for an automated pre

- programmed seq uence of functions to close the casing shear rams and the blind/shear rams in the event of an inadvertent or emergency disconnect of the LMRP or loss of both hydraulic and electrical supply from the surface control system.

In the event that the interventi on systems for the subsea BOP’s fail, LLOG will initiate call out of a secondary containment / surface intervention system supported by the Helix Well Containment Group (HWCG) of which LLOG is a member. This system incorporates a capping stack capable of being deployed from the back of a vessel of opportunity equipped with an ROV or from the Helix Q4000 DP MODU. Based on the potential integrity concerns of the well, a “cap and flow” system can be deployed which may include the Helix Producer 1 capable of handling up to 55,000 BOPD flowback. The vertical intervention work is contingent upon the condition of the blowing out well and what equipment is intact to access the wellbore for kill or containment operations. The available intervention equipment may also require modifications based on actual wellbore conditions. Standard equipment is available through the Helix Deepwater Containment System to fit the wellhead and BOP stack profiles used for the drilling of the above mentioned well.

G) Availability of rig to drill relief well , rig constraints and timing of rigs

LLOG currently has one deepwater MODU under contract (Noble Amos Runner moored semi). In the event of a blowout scenario that does not involve loss or damage to the rig such as an inadvertent disconnect of the BOP’s, then the existing contracted rig may be available for drilling the relief well

and vertical intervention work . If the blowout scenario involves damage to the rig or loss of the BOP ’s and riser, a replacement rig or rigs will be re quired.

With the current activity level in the GOM, 30 to 35 deepwater MODU’S are potentially available to support the relief well drilling operations. Rig share and resource sharing agreements are in place
between members of the Helix Well Containment Group. The ability to negotiate and contract an appropriate rig or rigs to drill relief wells is highly probable in a short period of time. If the rig or rigs are operating, the time to properly secure the well and mobe the rig to the relief well site l ocation is

estimated to be about 14 to 21 days. Dynamically positioned (DP) MODU’s would be the preferred option due to the logistical advantage versus a moored MODU which may add complications due to the mooring spread.

VESSELS OF OPPORTUNITY

Based o n the water depth restrictions for the proposed locations the following “Vessels of Opportunity” are presently available for utilization for intervention and containment and relief well operations. These may include service vessels and drilling rigs capab le of working in the potential water depths and may include moored vessels and dynamically positioned vessels. The specific conditions of the intervention or relief well operations will dictate the “best fit” vessel to efficiently perform the desired resu lts based on the blowout scenario. The list included below illustrates specific option that may vary according to the actual timing / availability at the time the vessels are needed.BLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 10/2/2013 Page 4 of 7
Confidential

4 OPERATION SPECIFIC VESSEL OF OPPORTUNITY

Intervention and Contain ment • Helix Q4000 (DP Semi)

• Helix Producer 1 (DP FPU)
Relief Well Drilling Rigs • Diamond Ocean Victory (Moored Semi)

• Ensco 850 2 (DP Semi)

• Transocean Enterprise (DP Drillship)

• Sevan Louisiana (DP

- Q1 2014

- contract to LLOG)

• Seadrill West Neptune (DP

- Q3 2 014

– contract to LLOG)

• Noble Amos Runner (Moored Semi)

ROV / Mult i

- Purpose Service Vessels • Oceaneering ( numerous DP ROV vessels)

• HOS Achiever, Iron Horse 1 and 2 (DP MPSV)

• Helix Pipe Lay Vessel (equipped w/ 6” PL

– 75,000’)

• Other ROV Vessels

– (Chouest, HO S, Fugro , Subsea 7 ) Shuttle Tanker / Barge Support • OSG Ship Management

H) Measures taken to enhance ability to prevent blowout

Pursuant to BOEM

- 2010

- 034 Final Interim Rules, m easures to enhance the ability to prevent or
reduce the likelihood of a blowo ut are largely based on proper planning and communication, identification of potential hazards, training and experience of personnel , use of good oil field practices and proper equipment that is properly maintained and inspected f or executing drilling oper ations of the proposed well or wells to be drilled.

When planning and designing the well, ample time is spent analyzing offset data , performing any needed earth modeling and identifying any potential drilling hazards or well specific conditions to safegua rd the safety of the crews when well construction operations are underway. Once the design criteria and well design is established, the well design is modeled for the lifecycle of the wellbore to ensure potential failure modes are eliminated. Pursuant to BOEM

- 2010

- 0034 Interim Final Rules implemented additional considerations of a minimum of 2 independent barriers for both internal and external flow paths in addition to proper positive and negative testing of the barriers

.

The proper training of crew m embers and awareness to identify and handle well control event is the

best wa y prevent a blowout incident. Contractor ’s personnel and service personnel training requirements are verified per regulatory requi r ements per guidelines issued in BOEM

- 2010

- 034

I nterim Final Rules

. Drills are performed frequently to verify crew training and improve reaction times.

Good communication between rig personnel, office support personnel is critical to the success of the operations. Pre

- spud meetings are conducted with rig crews and service providers to discuss, inform and as needed improve operations and well plans for safety and efficiency considerations. Daily meetings are conducted to discuss planning and potential hazards to ensure state of preparedness

and behavi or is enforced to create an informed and safe culture for the operations. Any changes in the planning and initial wellbore design is incorporated and communicated in a Management of Change (MOC) process to ensure continuity for all personnel.

Use of es tablished good oil field practices that safeguard crews and equipment are integrated to incorporate LLOG’s, the contractor and service provider policies.BLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 10/2/2013 Page 5 of 7
Confidential

5 Additional personnel and equipment will be used as needed to elevate awareness and provide real

t ime monitoring of well conditions while drilling such as MWD/LWD/PWD tools used in the bottom

hole assemblies. The tool configuration for each open hole section varies to optimize information gathered including the use of Formation

- Pressure

- While

- Drilling (FPWD) tools to establish real time formation pressures and to be used to calibrates pore pressure models while drilling. Log information and pressure data is used by the drilling engineers, geologist and pore pressure engineers to

maintain well control and reduced potential events such as well control events and loss circulation

events.

Mud loggers continuously monitor return drilling fluids, drill gas levels and cuttings as well as surface

mud volumes and flow rates , rate of penetration and lithology /paleo to aid in understanding trends and geology being drilled . Remote monitoring of real time drilling parameters and evaluation of geologic markers and pore pressure indicators is used to identify potential well condition changes.

Proper equipment mai ntenance and inspection program for same to before the equipment is required. Programmed equipment inspections and maintenance will be performed to ensure the equipment operability and condition. Operations will cease as needed in order to ensure equipme nt and well conditions are maintained and controlled for the safety of personnel, rig and subsurface equipment

and the environment.

I) Measures to conduct effective and early intervention in the event of a blowout

In conjunction with the LLOG Exploration’s “Well Control Emergency Response Plan” and as required by NTL 2010

- N06, the following is provided to demonstrate the potential time needed for performing secondary intervention and drilling of a relief well to handle potential worst case discharge for the proposed prospect. Specific plans are integrated into the Helix Well Containment Groups procures to be approved and submitted with the Application for Permit to Drill. Equipment availability, backup equipment and adaptability to the potential scenarios w ill need to be addressed based on the initial site assessment of the seafloor conditions for intervention operations. Relief well equipment such as backup wellhead equipment and tubulars will be available in LLOG’s inventory for immediate deployment as ne eded to address frilling the relief well(s).

SITE SPECIFIC PROPOSED RELIEF WELL AND INTERVENTION PLANNING

No platform was considered for drilling r elief wells for this location due to location, water depth and lack of appropriate platform within the area . For this reason a moored or DP MODU will be preferred / required.

Relief well sites have been initially identified to address blowout scenarios for the potential geologic targets for the proposed wells. A total of 6 relief well surface locations are proposed for the 2 Proposed Exploration Plan wells. Some of the relief well sites are common to different Proposed Exploration Plan wells. Based o n actual seafloor state unforeseen at this time, the final location(s) may need to be revised. The location s have been selected based on proximity to the targets sands and potential shallow hazards.BLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 10/2/2013 Page 6 of 7
Confidential

6 RELIEF WELL RESPONSE TIME ESTIMATE

OPERATION TIME ESTIMATE (DAYS)

IMMEDIATE RESPONSE

• safeguard personnel, render first

- aid

• make initial notifi cations

• implement short term intervention (if possible)

• implement spill control

• develop Initial Action Plan 1

INTERIM REPSONSE

• establish Onsite Command Center and Emergency Management Team

• assess well control issues

• mobil ize people and equipment (Helix DW Containment System)

• implement short term intervention and containment (if possible)

• develop Intervention Plan

• initiate relief well planning

• continue spill control measures 4

INTERVENTION AND CONTAIMENT OPERATIONS

• mobilize equipment and initiate intervention and containment operations

• perform TA operations and mobilize relief wells rig(s)

• finalize relief well plans, mobilize spud equipment, receive approvals

• continue spill control measures 14

RELIEF WELL(S) OPERATIONS

• continue intervention and containment measures

• continue spill control measures

• drill relief well (s) 50

PERFORM HYDRAULIC KILL OPERATIONS / SECURE BLOWNOUT WELL

• continue intervention and containme nt measures

• continue spill control measures

• perform hydraulic kill operations, monitor well, secure well 14

ESTIMATED TOTAL DAYS OF UNCONTROLLED FLOW 83 SECURE RELIELF WELL(S) / PERFORM P&A / TA OPERATIONS / DE MOBE 30

TOTAL DAYS 1 13BLOWOUT SCENARIO

M ISSISSIPPI CANYON 79 Created by: S.L. Stegeman

Last Revised: 10/2/2013 Page 7 of 7
Confidential

7Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## A PPENDIX C

GEOLOGICAL AND GEOPHYSICAL INFORMATION (30 CFR Part 250.214 and 250.244 )

A. 

## Geological Description

Included as Attachment E are the geological targets and a narrative of trapping features proposed in this plan.

B. 

## Structure Contour Maps

Inc luded as Attachment F are current structure maps (depth base and expressed in feet subsea) depicting the entire lease coverage area; drawn on top of the prospective hydrocarbon sands. The maps depict the proposed bottom hole location and applicable geolog ical cross section.

C. 

## Interpreted Seismic Lines

Included as Attachment G is a copy of the migrated and annotated (shot points, time lines, well paths) deep seismic line within 500 feet of the surface location being proposed in this Plan.

D. 

## Geological Structure Cross

- Sections.

An Interpreted geological cross section depicting the proposed well location and depth of the proposed well is included as Attachment H

. Such cross section corresponds to each seismic line being submitted.

E. 

## Shallow Hazards R eport

Tesla Offshore, L.L.C conducted an A rchaeological D eep T ow S urvey and Geoscience Earth & Marine Services, Inc. conducted a Geologic and Stratigraphic

Assessment Mississippi Canyon Block 079 during November 2006 and March,

2007 on behalf of LLOG Expl oration Offshore, L.L.C. Both were submitted to MMS (BOEM) under cover letter dated July 5, 2007. Berger Geosciences, LLC prepared a Revised Shallow Hazards Assessment and Benthic Communities Evaluation for Proposed Wells MC 79 A and MC 79 B dated Septem ber 24, 2013 which is being submitted to BOEM with this Revised Exploration Plan under

separate cover.Revised Exploration Plan Mississippi Canyon Block 079

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- G 27259 

### F. 

## Shallow Hazards Assessment

A shallow hazards assessment has been prepared for the proposed surface location, evaluating the seafloor and subsurface geologic and manmade features and conditions, and is included as Attachment I

.

G. 

## High Resolution Seismic Lines

Included as Attachment J is a copy of the annotated high resolution survey data lines for the surface location disturbance proposed in this Plan.

H. 

## Stratigraphic Column

A generalized biostratigraphic/lithostratigraphic column from the seafloor to the total depth of the proposed well is included as Attachment K

.

I. 

## Time vs Depth Tables

LL OG has determined that there is existing sufficient well control data for the target areas proposed in this P lan; therefore, tables providing seismic time versus depth for the proposed well locations are not required.Revised Exploration Plan Mississippi Canyon Block 079

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- G 27259 

# GEOLOGICAL DESCRIPTION

Attachment E (Proprietary In formation)Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# STRUCTURE MAPS

Attachment F (Proprietary Information)Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# DEEP SEISMIC LINES

Attachment G (Proprietary Information)Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# CROSS SECTION MAPS

Attachment H (Proprietary Informatio n)Revised Exploration Plan Mississippi Canyon Block 079

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- G 27259 

# SHALLOW HAZARDS ASSESSMENT

Attachment I (Public Information)Revis ed

Wellsite Assessment

MC 79

Project No.: 13

- 05

- 07 © Berger Geosciences, LLC. 2013



### i 

## Executive Summary

This report provides an update to the assessment of the seafloor and subsurface conditions for

two proposed exploration wells , MC 79

- A and MC 79

- B, in Mississippi Canyon (MC) Block 79

in order to satisfy all current BOEM NTLs. This report is a revision of the report entitled, Geologic and Stratigraphic Assessment, Block 79 (OCS G

- 27259), Mississippi Canyon Area

, Gulf of Mexico

, prepared by Geoscience, Earth, and Marine Services, Inc . and submitted by LLOG to the Minerals Management Service (MMS) in July 2007 ( Control No. N

- 09032 ). All

assessments are based on the interpretation of 3

- D seismic data to at least one second two

- way travel time (~2, 890 ft) below the mudline (bml)

.
The following points summarize the seafloor and subsurface conditions in and around MC 79 for

the proposed wells

.

 The water depths within the anchor assessment area for the proposed wells in MC 79 range from 3,413 ft to 4,266 ft below sea level

.

 The assessme nt area is located within an intrasalt minibasin located west of Horn Dome.

 The seafloor within the minibasin, near the proposed wells

, is smooth and gently sloping

. Seafloor slopes near the proposed wells are less than 3.0 °. Steeper slopes, up to 21.7 °,

are associated with the western m argin of Horn Dome. Slopes up to 11.3° occur along

seafloor faults on the crest of this salt uplift.

 There is no existing infrastructure within 1,000 ft of the proposed wells.

 An archaeological resource survey was per formed by Tesla Offshore, LLC. (200 6 ) and subsequent site

- specific assessments are being prepared for separate submittal to the

BOEM

.

 Seafloor faults are not located within 2 ,000 ft of the proposed wells. Although subsurface extensional faulting occurs within the assessment area, no buried faults are

located within 3,000 ft of the proposed well bores.

 Anomalous seafloor amplitude responses are found in association with seafloor faults and irregular seafloor along the Horn Dome uplift in southwestern MC 3 6 and along the

northern blockline of MC 80 . These areas may potentially support high

- density chemosynthetic or other benthic communities. Features or areas identified in 3

- D seismic data that could support high

- density chemosynthetic or benthic communit ies are not expected within 2,000 ft of the proposed wells , but may be encountered within the

maximum anchor radius for Proposed Well MC 79

- A

.

 G as hydrates may be present at the seafloor near faults and the irregular seafloor in

southwestern MC 36 and no rthwestern MC 80. G as hydrates are not expected within the 2,000 ft of the proposed wells. Gas hydrates may be present along the eastern margin of

th e maximum anchor radius for MC 79

- A.

 There is an overall negligible to moderate potential for shallow g as at the proposed wells.

 Sand

- bearing sequences may be encountered between Horizons 10 and 15 and between

Horizons 15 and 20

. The potential for shallow water flow at the proposed wells ranges from negligible to moderate

.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# S TRATIGRAPHIC COLUMN

Attachment J (Proprietary Information)Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## APPENDIX D HYDROGEN SULFIDE (H2S) INFORMATION (30 CFR Part 250.215 and 250.245 )

A. Concentration

LLOG does not anticipate encountering H2S while conducting the proposed exploratory operations provided for under this plan.



## B. Classification

In accordance with 30 CFR 250.490© and NTL No. 200 9

- G3 1 “Hydrogen Sulfide”, BOEM classified this area as “H2S Absent” in the approval letter dated September 4, 2007 for the Initial Exploration Plan (N

- 09032 )

.



## C. H2S Contingency Plan

Not applicable for the proposed operations.



## D. Modeling Report

Not appli cable to the propos ed operations.Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX E BIOLOGICAL, PHYSICAL AND SOCIOECONOMIC

INFORMATION (30 CFR Part 250.216 and 250.247 )

A. High

- Density Deepwater Benthic Communities Information

There are no observed apparent features or areas that could support hi gh

- density chemosynthetic communities identified within 2,000’ of the proposed surface

location for this proposed well.



## B. Topographic Features Map

The activities proposed in this Plan are not affected by a topographic feature.



## C. T opographic Features State ment (Shunting)

The activities proposed in this Plan are not affected by a topographic feature; therefore, LLOG is not required to shunt drill cuttings and drill fluids.



## D. Live Bottoms (Pinnacle Trend) Map

Mississippi Canyon Block 079 is not located with in the vicinity of a proposed live bottom (Pinnacle trend) area.



## E. Live Bottoms (Low Relief) Map

Mississippi Canyon Block 079 is not located within the vicinity of a proposed live bottom (Low Relief) area.



## F. Potentially Sensitive Biological Features Map

Mississippi Canyon Block 079 is not located within the vicinity of a proposed sensitive biological feature area.



## G. Remotely Operated Vehicle (ROV) Monitoring Survey Plan

Mississippi Canyon Block 079 is not located within an area where ROV Surveys

are req uired.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

### H. 

## Threatened or Endangered Species, Critical Habitat, and Marine

Mammal Information

.

Proposed activities in Mississippi Canyon Block 079 is not located in the presence of federally listed threatened or endangered species and critical habitat desi gnated under the ESA and marine mammal protected under the MMPA.

I

. 

## Archaeological Report

Tesla Offshore, L.L.C conducted an Archaeological Deep Tow Survey and Geoscience Earth & Marine Services, Inc. conducted a Geologic and Stratigraphic

Asse ssment Mississippi Canyon Block 079 during November 2006 and March, 2007 on behalf of LLOG Exploration Offshore, L.L.C. Both were submitted to MMS (BOEM) under cover letter dated July 5, 2007. Berger Geosciences, LLC prepared a Revised Shallow Hazards As sessment and Benthic Communities Evaluation for Proposed Wells MC 79 A and MC 79 B dated September 24, 2013 which is being submitted to BOEM with this Revised Exploration Plan under

separate cover.



## J. Air and Water Quality Information

Not applicable to pro posed operations.



## K. Socioeconomic Information

Not applicable to proposed operations.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## APPENDIX F

WASTE AND DISCHARGE INFORMATION (30 CFR PART 250.2 17 AND 250.248)

A. Projected Generated Wastes

TABLE 1. Wastes you will generate, treat and downhole dispose or discharge to the GOM

LLOG does not propose any treating, storing or downhole disposal of these wastes at the proposed well/MODU



## B. Projected Ocean Discharges

TABLE 2. Wastes you will transport and /or dispose of onshore



## C. Mo deling Report

Not applicable. Proposed activities will be covered by U.S. EPA NPDES

General Permit.

## DISCHARGE TO THE GOM

please specify if the amount reported is a total or per well amount 

## MP 079

Projected ocean discharges

Type of Waste Composition Projected Amount Discharge rate Discharge Method Answer yes or no Will drilling occur ? If yes, fill in the muds and cuttings.

EXAMPLE: Cuttings wetted with synthetic based fluid Cuttings generated while using synthetic based drilling fluid. X bbl/well X bbl/day/well discharge overboard No

Water-based drilling fluid Water based mud additives, barite and gel used for WBM 78,350 bbls/well 7,388 bbls/day/well Discharge overboard No

Cuttings wetted with water-based fluid Cuttings generated while using water based drilling fluid. 3,846 bbls/well 363 bbls/day/well Discharge overboard No

Cuttings wetted with synthetic-based fluid Cuttings generated while using synthetic based drilling fluid. 2,053 bbls/well 093 bbls/day/well Discharge overboard No

Will humans be there? If yes, expect conventional waste

EXAMPLE: Sanitary waste water Sanitary waste from living
quarters X bbl/well X bbl/hr/well chlorinate and discharge

overboard No

Domestic waste Misc waste for living quarters 11,966 bbls/well 2.7 bbls/hr/well Discharge overboard (no free oil) No

Sanitary waste Processed sanitary waste from living quarters 7,977 bbls/well 1.8 bbls/hr/well Chlorinate and discharge

overboard No

Is there a deck? If yes, there will be Deck Drainage

Deck Drainage Accumulated drainage due to

rainfall 0 to 47,261 bbls/well 0 to 167 bbls/hr/well Test for oil and grease and discharge overboard No

Will you conduct well treatment, completion, or workover?

Well treatment fluids NPDES approved treatment fluid used for well operations 100 bbls/well 20 bbls/hr/well Test for oil and grease and discharge overboard. No

Well completion fluids Clear brines used for completion operations 500 bbls/well 100 bbls/hr/well Test for oil and grease and discharge overboard. This

excludes clear brines containing Zinc No

Workover fluids NA NA NA NA NA

Miscellaneous discharges. If yes, only fill in those associated with your activity. Desalinization unit discharge NA NA NA NA NA Blowout prevent fluid NA NA NA NA NA

Ballast water Uncontaminated seawater used

for ballast control 0 to 100,000 bbls/well 16,350 bbls/hr/well Discharge overboard No Bilge water NA NA NA NA NA 

## TABLE 1. WASTES YOU WILL GENERATE, TREAT AND DOWNHOLE DISPOSE OR

Downhole Disposal Projected generated wasteExcess cement at seafloor Excess cement slurry and mixwater used for cementing operation - NPDES allowed 300 bbls/well 360 bbls/hr/well Discharge at mudline No

Fire water Uncontaminated seawater used for fire control system 0 to 10,000 bbls/well 16,350 bbls/hr/well Discharge overboard No Cooling water NA NA NA NA NA

Will you produce hydrocarbons? If yes fill in for produced water.

Produced water NA NA NA NA NA

Will you be covered by an individual or general NPDES permit ? General NPDES GMG 290000

Comply with the requirements of the NPDES permit. NOTE: If you will not have a type of waste, enter NA in the row.Please specify whatever the amount reported is a total or per well



## MP 079 Projected generated waste Solid and Liquid

Wastses Transportation

Type of Waste Composition Transport Method Name/Location of Facility Amount Disposal Method

Newport Environmental Services Inc., Ingleside, TX X bbl/well Recycled

Oil-based drilling fluid or mud NA NA NA NA NA

Synthetic-based drilling fluid or mud Internal olifin, ester nbased

mud Barged in 25 bbls cutting boxes and / or liquid mud tanks for supply vessels Newpark Transfer Station,
Fourchon, LA 6750 bbls / well Recycled

Cuttings wetted with Water-based fluid NA NA NA NA NA

Cuttings wetted with Synthetic-based fluid NA NA NA NA NA

Cuttings wetted with oil-based fluids NA NA NA NA NA

Will you produce hydrocarbons? If yes fill in for produced sand.

Produced sand

EXAMPLE: trash and debris (recylables) Plastic, paper, aluminum barged in a storage bin ARC, New Iberia, LA X lb/well Recycled

Trash and debris Plastic, paper, aluminum Barged in a storage bin Blanchard Landfill, Golden
Meadows, LA 4000 lbs / well Recycled

Used oil Spent oil from machinery Barged in USCG approved

transfer tote tanks. L&L Services, Fourchon, LA 200 bbls / well Recycled

Wash water Wash water w/ SBM

residue and surfactants Barged in 25 bbls cutting boxes and / or liquid mud tanks for supply vessels Newpark Transfer Station,
Fourchon, LA 2000 bbls / well Approved disposal well injection or land farm

Chemical product wastes Spent treatment and / or damaged chemicals used in operations Barged in 25 bbls cutting boxes and / or cutting boxes L&L Services, Fourchon, LA 10 bbls / well Recycled

NOTE: If you will not have a type of waste, enter NA in the row. 

## TABLE 2. WASTES YOU WILL TRANSPORT AND /OR DISPOSE OF ONSHORE

Will you have additional wastes that are not permitted for discharge? If 

### Waste DisposalRevised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## APPENDIX G

AIR EMISSIONS INFORMATION (30 CFR PART 250.2 18 AND 250.249)

A. Emissions Worksheets and Screening Questions

The Projected Quality Emissions Report (F orm MMS

- 138) addresses the proposed drilling, completion and potential testing operations utilizing a typical semi

- submersible drilling unit, with related support vessels and construction barge information.

As evidenced by Attachment K

, the worksheets wer e completed based on the proposed flaring and burning operations.

Screening Questions for EP’s Yes No
Is any calculated Complete Total (CT) Emission amount (in tons associated with your proposed exploration activities more than 90% of the amounts calcula ted 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

Does your emission calculations include any emission reduction measures or

modified emission factors? 

### X

Are your proposed exploration activities located east of 87.5 degrees W longitude? 

### X
Do you expect to encounter H2S at concentrations greater than 20 parts per million (ppm)? 

### X

Do you propose to flare or vent natural gas for more than 48 continuous hours from any proposed well? 

### X

Do you propose to burn produced hydrocarbon liquids? 

### X



## B. Emissions Reduction Measures

The projected air emissions are within the exemption level; therefore, no emission reduction measures are being proposed.



## C. Verification of N ondefault Emissions Factors

LLOG has elected to use the default emission factors as provided in Attachment

K

.



## D. Non

- Exempt Activities

The proposed activities are within the exemption amount as provided in

Attachment K

.



## E. Modeling Report

This section of the Plan is not applicable to the proposed operations.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# AIR QUALITY EMISSIONS REPORT

Attachment K (Public Information)EXPLORATION PLAN (EP)

AIR QUALITY SCREENING CHECKLIST OMB Control No. 1010-0151 OMB Approval Expires: 12/31/2014

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 1 of 8 COMPANY LLOG Exploration Offshore, L.L.C.

AREA Mississippi Canyon

BLOCK 79

LEASE OCS-G 27259

PLATFORM

WELL A & B

COMPANY CONTACT Kathy Gowland

TELEPHONE NO. 985-801-4300

REMARKS DP Semisubmersible RigEMISSIONS FACTORS

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 2 of 8 Fuel Usage Conversion Factors Natural Gas Turbines Natural Gas Engines Diesel Recip. Engine REF. DATE SCF/hp-hr 9.524 SCF/hp-hr 7.143 GAL/hp-hr 0.0483 AP42 3.2-1 4/76 & 8/84

Equipment/Emission Factors units PM SOx NOx VOC CO REF. DATE

NG Turbines gms/hp-hr 0.00247 1.3 0.01 0.83 AP42 3.2-1& 3.1-1 10/96 NG 2-cycle lean gms/hp-hr 0.00185 10.9 0.43 1.5 AP42 3.2-1 10/96 NG 4-cycle lean gms/hp-hr 0.00185 11.8 0.72 1.6 AP42 3.2-1 10/96 NG 4-cycle rich gms/hp-hr 0.00185 10 0.14 8.6 AP42 3.2-1 10/96

Diesel Recip. < 600 hp. gms/hp-hr 1 1.468 14 1.12 3.03 AP42 3.3-1 10/96 Diesel Recip. > 600 hp. gms/hp-hr 0.32 1.468 11 0.33 2.4 AP42 3.4-1 10/96

Diesel Boiler lbs/bbl 0.084 2.42 0.84 0.008 0.21 AP42 1.3-12,14 9/98

NG Heaters/Boilers/Burners lbs/mmscf 7.6 0.593 100 5.5 84 P42 1.4-1, 14-2, & 14 7/98
NG Flares lbs/mmscf 0.593 71.4 60.3 388.5 AP42 11.5-1 9/91 Liquid Flaring lbs/bbl 0.42 6.83 2 0.01 0.21 AP42 1.3-1 & 1.3-3 9/98 Tank Vapors lbs/bbl 0.03 E&P Forum 1/93 Fugitives lbs/hr/comp. 0.0005 API Study 12/93 Glycol Dehydrator Vent lbs/mmscf 6.6 La. DEQ 1991 Gas Venting lbs/scf 0.0034

Sulphur Content Source Value Units

Fuel Gas 3.33 ppm
Diesel Fuel 0.4 % weight Produced Gas( Flares) 3.33 ppm Produced Oil (Liquid Flaring) 1 % weightEMISSIONS CALCULATIONS 1ST YEAR

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 3 of 8 COMPANY AREA BLOCK LEASE PLATFORM WELL CONTACT PHONE REMARKS

LLOG Exploration Offsho Mississippi Canyon 79 OCS-G 27259 A & B Kathy Gowland 985-801-4300 DP Semisubmersible Rig

OPERATIONS EQUIPMENT RATING MAX. FUEL ACT. FUEL RUN TIME MAXIMUM POUNDS PER HOUR ESTIMATED TONS Diesel Engines HP GAL/HR GAL/D Nat. Gas Engines HP SCF/HR SCF/D

Burners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC CO

DRILLING PRIME MOVER>600hp diesel 61200 2955.96 70943.04 24 87 43.14 197.89 1482.82 44.48 323.52 45.03 206.60 1548.06 46.44 337.76 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

BURNER diesel 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 AUXILIARY EQUIP<600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 x per week VESSELS>600hp diesel(crew) 2065 99.7395 2393.75 6 37 1.46 6.68 50.03 1.50 10.92 0.16 0.74 5.55 0.17 1.21 6 x per week VESSELS>600hp diesel(supply) 2065 99.7395 2393.75 10 74 1.46 6.68 50.03 1.50 10.92 0.54 2.47 18.51 0.56 4.04 VESSELS>600hp diesel(tugs) 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

FACILITY DERRICK BARGE diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

INSTALLATION MATERIAL TUG diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(crew) 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(supply) 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

MISC. BPD SCF/HR COUNT

TANK- 0 0 0 0.00 0.00

DRILLING OIL BURN 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

WELL TEST GAS FLARE 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

2014 YEAR TOTAL 46.05 211.24 1582.89 47.49 345.36 45.73 209.81 1572.13 47.16 343.01

EXEMPTION

CALCULATION DISTANCE FROM LAND IN

MILES 1631.70 1631.70 1631.70 1631.70 45527.76

49.0EMISSIONS CALCULATIONS 2ND YEAR

FORM BOEM-0138 December 2011- Supersedes all previous versions of form BOEM-0138 which may not be used). Page 4 of 8 COMPANY AREA BLOCK LEASE PLATFORM WELL CONTACT PHONE REMARKS

LLOG Exploration Offsho Mississippi Canyon 79 OCS-G 27259 A & B Kathy Gowland 985-801-4300 DP Semisubmersible Rig

OPERATIONS EQUIPMENT RATING MAX. FUEL ACT. FUEL RUN TIME MAXIMUM POUNDS PER HOUR ESTIMATED TONS Diesel Engines HP GAL/HR GAL/D Nat. Gas Engines HP SCF/HR SCF/D

Burners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC CO

DRILLING PRIME MOVER>600hp diesel 61200 2955.96 70943.04 24 85 43.14 197.89 1482.82 44.48 323.52 44.00 201.85 1512.48 45.37 329.99 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

BURNER diesel 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 AUXILIARY EQUIP<600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 x per week VESSELS>600hp diesel(crew) 2065 99.7395 2393.75 6 36 1.46 6.68 50.03 1.50 10.92 0.16 0.72 5.40 0.16 1.18 6 x per week VESSELS>600hp diesel(supply) 2065 99.7395 2393.75 10 73 1.46 6.68 50.03 1.50 10.92 0.53 2.44 18.26 0.55 3.98 VESSELS>600hp diesel(tugs) 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

FACILITY DERRICK BARGE diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

INSTALLATION MATERIAL TUG diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(crew) 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(supply) 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

MISC. BPD SCF/HR COUNT

TANK- 0 0 0 0.00 0.00

DRILLING OIL BURN 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

WELL TEST GAS FLARE 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

2015 YEAR TOTAL 46.05 211.24 1582.89 47.49 345.36 44.69 205.01 1536.14 46.08 335.16

EXEMPTION

CALCULATION DISTANCE FROM LAND IN

MILES 1631.70 1631.70 1631.70 1631.70 45527.76

49.0SUMMARY

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 8 of 8 COMPANY AREA BLOCK LEASE PLATFORM WELL

LLOG Explorati Mississippi Canyon 79 OCS-G 27259 A & B

Emitted Substance

Year

PM SOx NOx VOC CO

2014 45.73 209.81 1572.13 47.16 343.01

2015 44.69 205.01 1536.14 46.08 335.16

Allowable 1631.70 1631.70 1631.70 1631.70 45527.76EXPLORATION PLAN (EP)

AIR QUALITY SCREENING CHECKLIST OMB Control No. 1010-0151 OMB Approval Expires: 12/31/2014

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 1 of 8 COMPANY LLOG Exploration Offshore, L.L.C.

AREA Mississippi Canyon

BLOCK 79

LEASE OCS-G 27259

PLATFORM

WELL A & B

COMPANY CONTACT Kathy Gowland

TELEPHONE NO. 985-801-4300

REMARKS Semisubmersible RigEMISSIONS FACTORS

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 2 of 8 Fuel Usage Conversion Factors Natural Gas Turbines Natural Gas Engines Diesel Recip. Engine REF. DATE SCF/hp-hr 9.524 SCF/hp-hr 7.143 GAL/hp-hr 0.0483 AP42 3.2-1 4/76 & 8/84

Equipment/Emission Factors units PM SOx NOx VOC CO REF. DATE

NG Turbines gms/hp-hr 0.00247 1.3 0.01 0.83 AP42 3.2-1& 3.1-1 10/96 NG 2-cycle lean gms/hp-hr 0.00185 10.9 0.43 1.5 AP42 3.2-1 10/96 NG 4-cycle lean gms/hp-hr 0.00185 11.8 0.72 1.6 AP42 3.2-1 10/96 NG 4-cycle rich gms/hp-hr 0.00185 10 0.14 8.6 AP42 3.2-1 10/96

Diesel Recip. < 600 hp. gms/hp-hr 1 1.468 14 1.12 3.03 AP42 3.3-1 10/96 Diesel Recip. > 600 hp. gms/hp-hr 0.32 1.468 11 0.33 2.4 AP42 3.4-1 10/96

Diesel Boiler lbs/bbl 0.084 2.42 0.84 0.008 0.21 AP42 1.3-12,14 9/98

NG Heaters/Boilers/Burners lbs/mmscf 7.6 0.593 100 5.5 84 P42 1.4-1, 14-2, & 14 7/98
NG Flares lbs/mmscf 0.593 71.4 60.3 388.5 AP42 11.5-1 9/91 Liquid Flaring lbs/bbl 0.42 6.83 2 0.01 0.21 AP42 1.3-1 & 1.3-3 9/98 Tank Vapors lbs/bbl 0.03 E&P Forum 1/93 Fugitives lbs/hr/comp. 0.0005 API Study 12/93 Glycol Dehydrator Vent lbs/mmscf 6.6 La. DEQ 1991 Gas Venting lbs/scf 0.0034

Sulphur Content Source Value Units

Fuel Gas 3.33 ppm
Diesel Fuel 0.4 % weight Produced Gas( Flares) 3.33 ppm Produced Oil (Liquid Flaring) 1 % weightEMISSIONS CALCULATIONS 1ST YEAR

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 3 of 8 COMPANY AREA BLOCK LEASE PLATFORM WELL CONTACT PHONE REMARKS

LLOG Exploration Offsho Mississippi Canyon 79 OCS-G 27259 A & B Kathy Gowland 985-801-4300 Semisubmersible Rig

OPERATIONS EQUIPMENT RATING MAX. FUEL ACT. FUEL RUN TIME MAXIMUM POUNDS PER HOUR ESTIMATED TONS Diesel Engines HP GAL/HR GAL/D Nat. Gas Engines HP SCF/HR SCF/D

Burners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC CO

DRILLING PRIME MOVER>600hp diesel 26400 1275.12 30602.88 24 87 18.61 85.36 639.65 19.19 139.56 19.43 89.12 667.79 20.03 145.70 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

BURNER diesel 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 AUXILIARY EQUIP<600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 x per week VESSELS>600hp diesel(crew) 2065 99.7395 2393.75 6 37 1.46 6.68 50.03 1.50 10.92 0.16 0.74 5.55 0.17 1.21 6 x per week VESSELS>600hp diesel(supply) 2065 99.7395 2393.75 10 74 1.46 6.68 50.03 1.50 10.92 0.54 2.47 18.51 0.56 4.04 VESSELS>600hp diesel(tugs) 4200 202.86 4868.64 12 2 2.96 13.58 101.76 3.05 22.20 0.04 0.16 1.22 0.04 0.27 3-4 days VESSELS>600hp diesel(work) 3000 144.9 3477.60 12 4 2.11 9.70 72.69 2.18 15.86 0.05 0.23 1.74 0.05 0.38 3-4 days VESSELS>600hp diesel(anchor 16000 772.8 18547.20 12 4 11.28 51.74 387.67 11.63 84.58 0.27 1.24 9.30 0.28 2.03 handler)

FACILITY DERRICK BARGE diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

INSTALLATION MATERIAL TUG diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(crew) 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(supply) 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

MISC. BPD SCF/HR COUNT

TANK- 0 0 0 0.00 0.00

DRILLING OIL BURN 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

WELL TEST GAS FLARE 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

2014 YEAR TOTAL 37.87 173.73 1301.83 39.05 284.04 20.48 93.97 704.13 21.12 153.63

EXEMPTION

CALCULATION DISTANCE FROM LAND IN

MILES 1631.70 1631.70 1631.70 1631.70 45527.76

49.0EMISSIONS CALCULATIONS 2ND YEAR

FORM BOEM-0138 December 2011- Supersedes all previous versions of form BOEM-0138 which may not be used). Page 4 of 8 COMPANY AREA BLOCK LEASE PLATFORM WELL CONTACT PHONE REMARKS

LLOG Exploration Offsho Mississippi Canyon 79 OCS-G 27259 A & B Kathy Gowland 985-801-4300 Semisubmersible Rig

OPERATIONS EQUIPMENT RATING MAX. FUEL ACT. FUEL RUN TIME MAXIMUM POUNDS PER HOUR ESTIMATED TONS Diesel Engines HP GAL/HR GAL/D Nat. Gas Engines HP SCF/HR SCF/D

Burners MMBTU/HR SCF/HR SCF/D HR/D DAYS PM SOx NOx VOC CO PM SOx NOx VOC CO

DRILLING PRIME MOVER>600hp diesel 26400 1275.12 30602.88 24 85 18.61 85.36 639.65 19.19 139.56 18.98 87.07 652.44 19.57 142.35 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 PRIME MOVER>600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

BURNER diesel 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 AUXILIARY EQUIP<600hp diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 x per week VESSELS>600hp diesel(crew) 2065 99.7395 2393.75 6 36 1.46 6.68 50.03 1.50 10.92 0.16 0.72 5.40 0.16 1.18 6 x per week VESSELS>600hp diesel(supply) 2065 99.7395 2393.75 10 73 1.46 6.68 50.03 1.50 10.92 0.53 2.44 18.26 0.55 3.98 VESSELS>600hp diesel(tugs) 4200 202.86 4868.64 12 2 2.96 13.58 101.76 3.05 22.20 0.04 0.16 1.22 0.04 0.27 3-4 days VESSELS>600hp diesel(work) 3000 144.9 3477.60 12 4 2.11 9.70 72.69 2.18 15.86 0.05 0.23 1.74 0.05 0.38 3-4 days VESSELS>600hp diesel(anchor 16000 772.8 18547.20 12 4 11.28 51.74 387.67 11.63 84.58 0.27 1.24 9.30 0.28 2.03 handler)

FACILITY DERRICK BARGE diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

INSTALLATION MATERIAL TUG diesel 0 0 0.00 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(crew) 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 VESSELS>600hp diesel(supply) 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

MISC. BPD SCF/HR COUNT

TANK- 0 0 0 0.00 0.00

DRILLING OIL BURN 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

WELL TEST GAS FLARE 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

2015 YEAR TOTAL 37.87 173.73 1301.83 39.05 284.04 20.03 91.87 688.38 20.65 150.19

EXEMPTION

CALCULATION DISTANCE FROM LAND IN

MILES 1631.70 1631.70 1631.70 1631.70 45527.76

49.0SUMMARY

FORM BOEM-0138 December 2011 - Supersedes all previous versions of form BOEM-0138 which may not be used). Page 8 of 8 COMPANY AREA BLOCK LEASE PLATFORM WELL

LLOG Explorati Mississippi Canyon 79 OCS-G 27259 A & B

Emitted Substance

Year

PM SOx NOx VOC CO

2014 20.48 93.97 704.13 21.12 153.63

2015 20.03 91.87 688.38 20.65 150.19

Allowable 1631.70 1631.70 1631.70 1631.70 45527.76Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## APPENDIX H

OIL SPILL INFORMATION (30 CFR PART 250.219 AND 250.250)

A. 

## Oil Spill Response Planning

The proposed activities in this Initial Exploration Plan will be covered by the Oil Spill Response Plan filed by LLGO (MMS Operator No. 020258) in accordance

with 30 CFR 254 Biennial update approved on August 8, 2012 and modifications

submitted o n January 29, 2013, approved February 25, 2013, and April 11, 2013, approved on April 19, 2013.

The WCD proposed in this Plan does not exceed the WCD outlined in our OSRP.

B. 

## Spill Response Sites

The following locations will be used in the event an oil spill occurs as a result of the proposed activities.

Primary Response Equipment

Location Pre

- Planned Staging Location(s)

Houma, LA Fort Jackson, LA

C. 

## OSRO Information

The O’Brien Group (TOG) will provide trained personnel capable of providing

super visory management of the oil spill response in addition to contacting and deploying cleanup personnel and equipment

LLOG utilizes Clean Gulf Associates (CGA) as it’s primary provider for equipment, which is an industry cooperative owning an inventory of o il spill

clean

- up equipment. CGA is supported by the Marine Spill Response Corporation’s (MSRC), which is responsible for storing, inspecting, maintaining and dispatching CGA’s equipment. The MSRC STARS network provides for the closest available personne l, as well as an MSRC supervisor to operate the equipment.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

## D. Worst

- Case Scenario Information

Category Regional OSRP Modified EP Type of Activity Exploratory MODU Exploratory MODU Facility Surface Location Mississippi Canyon

Block 547 Mississippi Cany on Block 079

Facility Description Well Location 2 Well Location B

Distance to Nearest Shoreline (Miles) 38.4 49

Volume: Storage Tanks (total) Facility Piping (total) Lease Term Pipeline Uncontrolled Blowout (day) Barging

Potential 24 Hour Volume (bbls) 0

0

0 225,144 bbls

225,144 bbls 0

0

0 75,329 bbls

75,329 bbls

Type of Liquid Hydrocarbon Condensate Crude Oil API Gravity 2 8 o 3 3 o



### Since LLOG Exploration Offshore, L.L.C. (LLOG) has the capability to respond to the appro priate worst

- case spill scenario included in its regional OSRP Biennial update approved on August 8, 2012, and modifications submitted on January 29, 2013, approved February 25, 2013, and April 11, 2013, approved on April 19,

2013 and since the worst case discharge determined in this Revised Exploration

Plan for MC 079 does not exceed our worst case discharge outlined in our Regional OSRP, I hereby certify that LLOG Exploration Offshore, L.L.C. has the capability to respond, to the maximum extent practica ble, to a worst

- case discharge, or a substantial threat of such a discharge, resulting from the activities proposed in this Supplemental Exploration Plan. The WCD for the subject plan does not exceed the worst case discharge previously submitted for MC 54 7.

LLOG Exploration Offshore, L.L.C., Company No. 02058, previously submitted the Regional OSRP Exploration WCD volume to be reviewed in Plan R

- 5139, Revised Exploration Plan submitted on March 2, 2011 and approved October 6,

2011.

The required proprie tary data outlined in NTL 2010

- N06 is included in this Revised Exploration Plan as Attachment D.



## E. Oil Spill Response Discussion

See the following Oil Spill Response Discussion.

### SPILL RESPONSE DISCUSSION

For the purpose of NEPA and Coastal Zone Mana gement Act analysis, the largest spill volume originating from the proposed activity would be a well bl owout during drilling operations, estimated to be 75,329 barrels of crud e oil with an API gravity of 33°.

Land Segment and Resource Identification

Trajectories of a spill and the probability of it impacting a land segment have been projected utilizing information in the BS EE Oil Spill Risk Analysis Model (OSRAM) for the Central and

Western Gulf of Mexico available on the BSEE website. The results are shown in Figure 1. The BSEE OSRAM identifies a 21% probabi lity of impact to the shorel ines of Plaquemines Parish, Louisiana within 30 days. Plaquemines Parish includes Barataria Bay, the Mississippi River Delta, Breton Sound and the affiliated islands and bays. This region is an extremely sensitive habitat and serves as a migratory, breeding, feedi ng and nursery habitat for numerous species of wildlife. Beaches in this area vary in grain part icle size and can be classified as fine sand, shell or perched shell beaches. Sandy and muddy tidal flats are also abundant.

Response

LLOG will make every effort to respond to the Worst Case Discharge as effectively as practicable. A description of the response equipment under contra ct to contain and recover the Worst Case Discharge is shown in Figure 2.

Using the estimated chemical and physical charact eristics of crude oil, an ADIOS weathering model was run on a similar product from the ADIO S oil database. The results indicate 24% or approximately 18,079 barrels of crude oil would be evaporated/dispersed w ithin 24 hours, with approximately 57,250 barrels remaining.

Spill Response MC 79, Location A Barrels of Oil

WCD Volume 75,329

Less 24% natural evaporation/dispersion 18,079

Remaining volume 57,250



### Figure 2 outlines equipment, personnel, materials and support vessels as well as temporary storage equipment available to respond to a spill of approximately 57,250 barrels. The volume accounts for the amount remaining after evaporatio n/dispersion at 24 hours. The list estimates individual times needed for proc urement, load out, travel time to the site and deployment. Figure

2 also indicates how operations will be supported.

LLOG’s Oil Spill Response Plan includes alternative response te chnologies such as dispersants and in-situ burn. Strategies will be decided by Unified Command based on the size of the spill, weather and potential impacts. If aerial dispersants are utili zed, 8 sorties (9,600 gallons) from two of the DC-3 aircrafts and 4 sorties (8,000 gall ons) from the Basler ai rcraft would provide a

### daily dispersant capability of 7,540 barrels. If th e conditions are favorable for in-situ burning, the proper approvals have been obtained and the prope r planning is in place, in-situ burning of oil may be attempted. Slick containment boom woul d be immediately calle d out and on-scene as soon as possible. Offshore response strategies may include attempting to skim utilizing CGA’s and MSRC’s spill response equipment, with a total derated skim ming capacity of 156,285 barrels. Temporary storage asso ciated with skimming equipm ent equals 63,198 barrels. If additional storage is needed, a 25,000 barrel stor age barge and three 23,000 barrel storage barges may be mobilized and centrally located to provi de temporary storage allowing the skimmers to stay in the area of operations as much as possible. Safety is first priority. Air monitoring will be accomplished and operations deemed safe prio r to any containment/skimming attempts.

If the spill went unabated, shoreline impact in Plaquemines Parish, Louisiana would depend upon existing environmental conditions. Shorelin e protection would include the use of CGA’s

near shore and shallow water skimmers with a totaled derated sk imming capacity of 40,341 barrels. Temporary storage associated with skim ming equipment equals 504 barrels. If additional storage is needed, two 20,000 barrel storage barges may be mobilized and centrally located to provide temporary storage allowing the skimmers to stay in the area of operations as much as possible. Onshore response may include the de ployment of shoreline bo om on beach areas, or protection and sorbent boom on vegetated areas. Master Service Agreements with AMPOL and OMI Environmental will ensure access to 147,00 0 feet of 18” shoreline protection boom. Figure

2 outlines individual times needed for procurem ent, load out, travel time to the site and deployment. Strategies would be based upon survei llance and real time traj ectories that depict areas of potential impact given actual sea and w eather conditions. The Stat e of Louisiana Initial Oil Spill Response Plan for Plaquemines Parish and Unified Command would be consulted to ensure that environmental and special economic resources would be co rrectly identified and prioritized to ensure optimal protection. Shorel ine protection strategies depict the protection response modes applicable for o il spill clean-up operati ons. The State of Louisiana Initial Oil Spill Response Plan provides detailed shoreline protection strategies for this area, and it describes necessary action to keep the oil spill from entering Louisiana’s coastal wetlands, based on the assumption that removal of the released oil will be much easier and less damaging to fragile coastal ecosystems if done in the open waters of the Gulf of Mexico. Supervisory personnel have the option to modify the deploym ent and operation of equipment allowing a more effective response to site-speci fic circumstances. LLOG’s cont ract Spill Management Team holds a copy of the State of Louisiana Initial Oil Spill Response Plan.

Based on the anticipated worst case discharge scen ario, LLOG can be onsite with contracted oil spill recovery equipment with adequate response capacity to contain and recover surface hydrocarbons, and prevent land impact, to the maximum extent practicable, within an estimated 46 hours (based on the equipment’s Effectiv e Daily Recovery Capacity (EDRC)).

### Initial Response Considerations Actual actions taken during an oil spill response will be based on many factors which include but

are not limited to:

• Weather

• Equipment and materials availability

• Ocean currents and tides

• Location of the spill

• Product spilled

• Amount spilled

• Environmental risk assessments

• Trajectory and product analysis

• Well status, i.e., shut in or continual release

LLOG will take action to provide a safe, aggressive response to c ontain and recover as much of the spilled oil as quickly as it is safe to do so. In an effort to protect the environment, response actions will be designed to provide an “in-depth” protection strategy meant to recover as much oil as possible as far from environmentally se nsitive areas as possible. Safety will take precedence over all other considerations during these operations.

Coordination of response assets will be supe rvised by the designation of a SIMOPS group as necessary for close quarter vessel response activitie s. Most often, this gr oup will be used during source control events that require a significant nu mber of large vessels operating independently, but in coordination to complete a common objec tive, in a small area and in close coordination and support of each other. This group must also monitor the subsurface activ ities of each vessel (ROV, dispersant application, well control sup port, etc.). The SIMOPS group leader reports to

the Source Control Section Chief.

In addition, these activities will be monitored by the spill mana gement team (SMT) and Unified

Command via a structured Common Operating Picture (COP) established to track resource and

slick movement in real time.

Upon notification of a spill, the following actions will be taken:

• Information will be confirmed

• An assessment will be made and initial objectives set

• OSROs and appropriate agen cies will be notified

• ICS 201, Initial Report Form will be completed

• Initial Safety plan will be written and published

• Unified Command will be established

o Overall safety plan developed to reflect the operational situa tion and coordinated objectives

o Areas of responsibility established for S ource Control and each surface operational

site

o On-site command and control established

### Decanting Strategy Recovered oil and water mixtures will typically se parate into distinct phases when left in a quiescent state. When separati on occurs, the relatively clean water phase can be siphoned or decanted back to the recovery point with minima l, if any, impact. Decan ting therefore increases the effective on-site oil storage capacity a nd equipment operating time. FOSC/SOSC approval will be requested prior to decanting operations. This practice is routinely used for oil spill

recovery.

Offshore Response Actions

Equipment Deployment

Surveillance

• Surveillance Aircraft will be deployed within two hours of Qu alified Individual (QI) notification, or at first light

• Provide trained observer to pr ovide on site status reports

• Provide command and control platfo rm at the site if needed

• Continual surveillance of oil movement by re mote sensing systems, aerial photography

and visual confirmation

• Continual monitoring of vessel assets using vessel monitoring systems

Dispersant application assets

• Put Airborne Support Inc. (ASI) on standby

• With the Federal On-Scene Coordinator (FOSC), conduct analysis to determine appropriateness of dispersant application

• Gain FOSC approval for use of dispersants on the surface

• Deploy aircraft in accordance with a plan developed for the actual situation

• Coordinate movement of dispersants, ai rcraft, and support equipment and personnel

• Confirm dispersant availability fo r current and long range operations

• Start ordering dispersa nt stocks required for expected operations

Containment boom

• Call out early and expedite deployment to be on scene ASAP

• Ensure boom handling and mooring equipment is deployed with boom

• Provide continuing reports to vessels to expedite their arrival at sites that will provide for

their most effective containment

• Use Vessels of Opportunity (VOO) to deploy and maintain boom

Dedicated off-shore skimming systems

General

• Deployed to the highest concentration of oil

• Assets deployed at safe distance from aer ial dispersant and in-situ burn operations

### CGA HOSS Barge

• Use in areas with heaviest oil concentrations

• Consider for use in areas of known debris (seaweed, and other floating materials)

CGA FRUs

• To the area of the thickest oil

• Use as far off-shore as allowed

• VOOs 140’ – 180’ in length

• VOOs with minimum of 18’ x 38’ or 23’ x 50’ of optimum deck space

• VOOs in shallow water should have a dr aft of <10 feet when fully loaded

MSRC Oil Spill Response Vessels (OSRV)

• Use in areas with heaviest oil concentrations

• Use as far off-shore as allowed

MSRC Responders

• Use in areas with heaviest oil concentrations

• Consider for use in areas of known debris (seaweed, and other floating materials)

Storage Vessels

• Establish availability of CGA contracted assets

• Early call out (to allow for tug boa t acquisition and deployment speeds)

• Phase mobilization to allow storage vessels to arrive at the same time as skimming

systems

• Position as closely as possible to ski mming assets to minimize offloading time

Vessels of Opportunity (VOO)

• Use LLOG’s contracted resources as applicable

• Industry vessels are usually best for depl oyment of Vessel of Opportunity Skimming Systems (VOSS)

• Acquire additional resources as needed

• Consider use of local assets, i.e. fishing and pleasure craft

• Expect mission specific and sa fety training to be required

• Plan with the US Coast Guard for vessel inspections

### In-situ Burn assets

• Determine appropriateness of in-situ burn ope ration in coordination with the FOSC and affected State On-Scene Coordinator (SOSC)

• Determine availability of fire boom and selected ignition systems

• Start ordering fire boom stocks required for expected operations

• Contact boom manufacturer to provide training if required

• Determine assets to perform on water operation

• Build operations into safety plan

• Conduct operations in accordance with an approved plan

Adverse Weather Operations:

In adverse weather, when seas are > 3 feet, the use of larger recovery and storage vessels, oleophilic skimmers, and large offshore boom will be maximized. Safety will be the overriding factor in all operations and will cease at the orde r of the Unified Command, vessel captain, or in an emergency, ”stop work” may be directed by any crew member.

### Near Shore Response Actions

Timing

• Place near shore assets on standby and depl oy in accordance with planning based on the actual situation, actual traj ectories and oil budgets

• VOO identification and training in advance of spill nearing sh oreline if possible

• Outfitting of VOOs for specific missions

• Deployment of assets based on actual movement of oil

Considerations

• Water depth, vessel draft

• Shoreline gradient

• State of the oil

• Use of VOOs

• Distance of surf zone from shoreline

Equipment Deployment

Surveillance

• Provide trained observer to direct skimming operations

• Continual surveillance of oil movement by re mote sensing systems, aerial photography

and visual confirmation

• Continual monitoring of vessel assets

Dispersant Use

• Generally will not be approved within 3 miles of shore or with less than 10 meters of water depth

• Approval would be at Regional Re sponse Team level (Region 6)

Vessel Deployment Dedicated Near Shore skimming systems

• Fast Response Vessels (FRV)

• Egmopol and Marco Shallow Water Skimmer (SWS)

• Operate with aerial spotter directi ng systems to observed oil slicks

VOO

• Use LLOG’s contracted resources as applicable

• Industry vessels are usually best for depl oyment of Vessel of Opportunity Skimming Systems (VOSS)

• Acquire additional resources as needed

• Consider use of local assets, i.e. fishing and pleasure craft

• Expect mission specific and sa fety training to be required

• Plan with the US Coast Guard for vessel inspections

• Operate with aerial spotter directing systems to oil patches

### Shoreline Protection Operations

Response Planning Considerations

• Environmental risk assessments (ERA) to determine prioritie s for area protection

• Time to acquire personnel and eq uipment and their availability

• Previous contingency planning contained in the appropriate Area Contingency Plan, and currently for Louisiana, The State of Loui siana Initial Oil Spill Response Plan, Deep Water Horizon, dated 2 May 2010

Actions

Placement of boom

• Position boom in accordance with the ERA based on the actual situation or the appropriate ACP

• Assess timing of booming operations to ensure it is where it needs to be at time of impact. Consider:

o Trajectories

o Weather forecast

o Oil Impact forecast

o Verified spill movement

o Boom, manpower and vessel (shallow draft) availability

o Near shore boom and support material, (stakes, anchors, line)

Beach Preparation

Considerations and Actions

• Use of a 10 mile go/no go line to determine timing of beach cleaning

• Shoreline Cleanup and Assessment Team Reports and recommendations

• Determination of Archeological site s and gaining authority to enter

• Monitoring of tide tables and weather to determine extent of high tides

• Pre cleaning of beaches by moving waste above high tide lines to minimize waste

• Staging of equipment and housing of respons e personnel as close to the job site as possible to maximize on-site work time

• Boom tending, repair, replacement and security (u se of local assets may be advantageous)

• Constant awareness of weather and oil moveme nt for resource redeployment as necessary

• In-situ burn may be considered when marshes have been impacted

• Passive clean up of marshes should be consider ed and appropriate stoc ks of sorbent boom and/or sweep obtained

• Earthen berms and shoreline protection boom may be considered to protect sensitive

inland areas

### Decanting Strategy Recovered oil and water mixtures will typically se parate into distinct phases when left in a quiescent state. When separati on occurs, the relatively clean water phase can be siphoned or decanted back to the recovery point with minima l, if any, impact. Decanting therefore increases the effective on-site oil storage capacity a nd equipment operating time. FOSC/SOSC approval will be requested prior to decanting operations. This practice is routinely used for oil spill

recovery.

CGA Equipment Limitations The capability for any spill response equipment, whether a dedicated or portable system, to operate in differing weather conditions will be directly in rela tion to the capabilities of the vessel the system in placed on. Most importantly, howev er, the decision to operate will be based on the judgment of the Unified Command a nd/or the Captain of the vessel, who will ultimately have the final say in terminating operations. Skimming equipment listed below may have operational limits which exceed those safety thresholds. As was seen in the Deepwater Horizon (DWH) oil spill response, vessel skimming opera tions ceased when seas reache d 5-6 feet and vessels were often recalled to port when those conditions were exceeded. Systems below are some of the most up-to-date systems available and were employed during the DWH spill.

Boom 3 foot seas, 20 knot winds Dispersants Winds more than 25 knots Visibility less than 3 nautical miles Ceiling less than 1,000 feet.

FRU 8 foot seas HOSS Barge/OSRB 8 foot seas Koseq Arms 8 foot seas

OSRV 4 foot seas

### Environmental Conditions in the GOM Louisiana is situated between the easterly and westerly wind belts, and therefore, experiences westerly winds during the wint er and easterly winds in the summer. Average wind speed is generally 14-15 mph along the coast. Wave he ights average 4 and 5 feet. However, during hurricane season, Louisiana has recorded wave heights ranging from 40 to 50 feet high and winds reaching speeds of 100 mph. Because much of southern Louisiana lies below sea level, flooding is prominent.

Surface water temperature ranges between 70 and 80  ̊ F during the summer months. During the winter, the average temperatur e will range from 50 and 60  ̊ F.

The Atlantic and Gulf of Mexico hurricane seas on is officially from 1 June to 30 November. 97% of all tropical activity occurs within this window. The Atlant ic basin shows a very peaked season from August through October, with 78% of the tropical storm days, 87% of the minor (Saffir-Simpson Scale categories 1 and 2) hurricane days, and 96% of the major (Saffir-Simpson categories 3, 4 and 5) hurricane days occurri ng then. Maximum activity is in early to mid September. Once in a few years there may be a hurri cane occurring "out of season" - primarily in May or December. Globally, September is the mo st active month and May is the least active

month.

### FIGURE 1

TRAJECTORY BY LAND SEGMENT

Trajectory of a spill and the probability of it impacting a land segment have been projected utilizing LLOG’s WCD and information in the BSEE Oil Spill Risk Analysis Model (OSRAM) for the Central and Western Gulf of Mexico available on the BSEE website using 30 day impact. The results are tabulated below.

Area/Block OCS-G Launch

Area Land Segment and/or

Resource Conditional Probability (%) within 30 days

Exploratory Drilling

MC 79, Location A

49 miles from shore G27259 C57 Cameron, LA Vermilion, LA Terrebonne, LA Lafourche, LA Plaquemines, LA

St. Bernard, LA Hancock & Harrison, MS Jackson, MS Mobile, AL Baldwin, AL Escambia, AL Okaloosa, FL

Walton, FL

Bay, FL 1

1

2

2

21

3

1

1

1

1

1

1

1

1WCD Scenario– BASED ON WELL BLOWOUT DURING DRILLING OPERATIONS(49 miles from shore)57,250 bbls of crude oil (Volume considering natural weathering)API Gravity 33°FIGURE 2 – Equipment ResponseTime to MC 79, Location ADispersants/SurveillanceDispersant/SurveillanceDispersantCapacity (gal)StorageCapacityPersons Req.FromHrs toProcureHrs toLoadoutTravel tositeTotal HrsCGABasler 67T 2000 NA 2 Houma 1 1 0.9 2.9ASIDC 3 1200 NA 2 Houma 1 1 1.1 3.1DC 3 1200 NA 2 Houma 1 1 1.1 3.1Aero Commander NA NA 2 Houma 1 1 0.9 2.9Offshore ResponseOffshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsCGAHOSS Barge 43000 4000 3 Tugs 5 Harvey 7 0 5 11.3 1 24.395’ FRV 12342 249 NA 4 Venice 1 0 2 3.6 0 6.695’ FRV 12342 249 NA 4 Leeville 1 0 2 5.6 0 8.6Boom Barge (CGA-300)42” Auto Boom (25000’)NA NA1 Tug50 Crew4 (Barge)2 (Per Crew)Leeville 4 0 6 20 1.5 31.5MSRCLouisiana ResponderTransrec 350 + OSRV7,920’ 67” Curtain Pressure Boom10567 4000 NA 14 Fort Jackson 2 0 1 6.1 1 10.1MSRC 452 Offshore Barge1 Crucial Disk 88/302,640‘ 67” Curtain Pressure Boom11122 45000 3 Tugs 6 Fort Jackson 2 0 2 12.1 1 17.1Mississippi ResponderTransrec 350 + OSRV7,920’ 67” Curtain Pressure Boom10567 4000 NA 14 Pascagoula 2 0 1 7.6 1 11.6Deep Blue ResponderLFF 100 Brush + OSRV7,260’ 67” Curtain Pressure Boom18086 4000 NA 14 Fourchon 2 0 1 10.1 1 14.1Recovered Oil Storage NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsEnterprise Marine Services LLC (available through contract with CGA)CTCo 2603 NA 25000 1 Tug 6 Amelia 4 12 4 25 1 46CTCo 2607 NA 23000 1 Tug 6 Amelia 4 12 4 25 1 46CTCo 2608 NA 23000 1 Tug 6 Amelia 4 12 4 25 1 46CTCo 2609 NA 23000 1 Tug 6 Amelia 4 12 4 25 1 46Staging Area: VeniceOffshore Equipment WithStagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toSiteHrs toDeployTotalHrsCGAFRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Galveston 1 2 8 7.5 1 19.5FRU (1) + 100 bbl Tank (1) 4251 100 1 Utility 6 Harvey 1 2 1.75 7.5 1 13.3FRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Ingleside 1 2 11 7.5 1 22.5FRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Lake Charles 1 2 5.5 7.5 1 17FRU (2) + 100 bbl Tank (2) 8502 400 2 Utility 12 Leeville 1 2 3.5 7.5 1 15FRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Morgan City 1 2 3.25 7.5 1 14.8FRU (2) + 100 bbl Tank (4) 8502 400 2 Utility 12 Venice 1 2 0 7.5 1 11.5Hydro-Fire Boom NA NA 8 Utility40 Harvey 1 4 1.75 7.5 6 20.3Nearshore ResponseNearshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsCGA46’ FRV 5000 65 NA 4 Venice 1 0 1 2 0 4Trinity SWS 21500 249 NA 4 Venice 1 2 2 2 0 7Enterprise Marine Services LLC (available through contract with CGA)CTCo 2604 NA 20000 1 Tug 6 Amelia 4 12 4 15 1 36CTCo 2605 NA 20000 1 Tug 6 Amelia 4 12 4 15 1 36Staging Area: VeniceNearshore and InlandSkimmers With StagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotalHrsCGASWS Egmopol 3000 100 NA 3 Morgan City 1 2 3.25 2 0 8.25SWS Marco 3588 20 NA 3 Lake Charles 1 2 5.5 2 0 10.5SWS Marco 3588 34 NA 3 Leeville 1 2 3.5 2 0 8.5SWS Marco 3588 34 NA 3 Venice 1 2 0 2 0 5Rope Mop 77 2 0 3 Harvey 1 2 8 2 0 13Shoreline ProtectionStaging Area: VeniceShoreline ProtectionBoomVOOPersonsReq.Storage/WarehouseLocationHrs toProcureHrs toLoadoutTravel toStagingTravel toDeployment SiteHrs toDeployTotal HrsAMPOL (available through MSA)42,000’ 18” Boom 16 Crew 40 New Iberia, LA 2 2 4 2 12 2220,000’ 18” Boom 8 Crew 20 New Orleans, LA 2 2 2 2 6 14OMI Environmental (available through MSA)10,000’ 18” Boom 4 Crew 10 New Iberia, LA 1 1 4 2 3 1110,000’ 18” Boom 4 Crew 10 Houston, TX 1 1 7.5 2 3 14.510,000’ 18” Boom 4 Crew 10 Port Arthur, TX 1 1 6.25 2 3 13.2520,000’ 18” Boom 8 Crew 20 Belle Chasse, LA 1 1 1.75 2 6 11.7510,000’ 18” Boom 4 Crew 10 Port Allen, LA 1 1 3.5 2 3 10.510,000’ 18” Boom 4 Crew 10 Houma, LA 1 1 3.5 2 3 10.515,000’ 18” Boom 6 Crew 14 Gretna, LA (Warehouse) 2 2 2 2 4 12Beach BoomEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotalHrsCGABeach Boom (2000’) NA NA NA 6 Galveston 1 2 8 1 2 14Beach Boom (1000’) NA NA NA 4 Ingleside 1 2 11 1 2 17Beach Boom (2000’) NA NA NA 6 Pascagoula 1 2 4 1 2 10Wildlife ResponseEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotalHrsCGAWildlife Support Trailer NA NA NA 2 Houma 1 2 3 1 2 9Bird Scare Guns (24) NA NA NA 2 Belle Chasse 1 2 1.5 1 2 7.5Bird Scare Guns (12) NA NA NA 2 Galveston 1 2 8 1 2 14Bird Scare Guns (24) NA NA NA 2 Houma 1 2 3 1 2 9Bird Scare Guns (12) NA NA NA 2 Ingleside 1 2 11 1 2 17Bird Scare Guns (24) NA NA NA 2 Lake Charles 1 2 5.5 1 2 11.5Bird Scare Guns (24) NA NA NA 2 Pascagoula 1 2 4 1 2 10Response AssetTotalOffshore EDRC 156,285Offshore Recovered Oil Storage 157,198Nearshore / Shallow Water EDRC 40,341Nearshore / Shallow Water Recovered Oil Storage 40,504Revised Exploration Plan Mississippi Canyon Block 079

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- G 27259 

## APPENDIX I

ENVIRONMENTAL MONITORING INFORMATION (30 CFR PART 250.221 AND 250.25 2 )

A. Monitoring Systems

LLOG subscribes to Impact Weather Service which provides access to real

- time weather conditions, and provides periodic updates on impending inclement

weather condi tions such as tropical depressions , storms and/or hurricanes entering

the Gulf of Mexico.

LLOG also relies on the National Weather Service to support the aforementioned subscribed service. During impending inclement weather conditions, LLOG closely coord inates the activity with our contractors and field personnel to ensure the safety of people for evacuation; measures to prepare the facility for evacuation to ensure protection of the environment and the facility/equipment.

Mississippi Canyon Block 079 is in water depths greater than 300 meters (984 feet); therefore, LLOG will follow the guidelines of the applicable NTL 2009

- G02 “Ocean Current Monitoring”, by monitoring and gathering ocean current data using Acoustic Doppler Current Profile (ADCP) while th e MODU is on

location.



## B. Incidental Takes

LLOG does not anticipate the incidental taking of any species as a result of the proposed activities based on the implementation of, and adherence to, the BSEE

NTL No. 2012

- G01 “Marine Trash and Debris Awareness T raining and

Elimination” and Joint NTL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Protected Species Reporting”.



## C. Flower Garden Banks National Marine Sanctuary

This section of the plan is not applicable to the proposed operations.Revised Exploration Plan Mississippi Canyon Block 079

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## APPE NDIX J

LEASE STIPULATIONS/SPECIAL CONDITIONS INFORMATION (30 CFR PART 250.2 22 A ND 250.253)

A. Lease Stipulations

Minerals Management Service (BOEMRE) invoked Stipulation No. 6

– Marine Protected Species, Lease OCS

- G

- 27259, Mississippi Canyon Block 079.

Lea se Stipulation No. 6 is to reference measures to minimize or avoid potential adverse impacts to protected species (sea turtles, marine mammals, gulf sturgeon, and other federally protected species). BOEM has issued Notice to Lessees Joint

NTL No. 2012

- G02 “ Implementation of Seismic Survey Mitigation Measures and Protected Species Observer Program ”, Joint NTL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Protected Species Reporting” and BSEE NTL No.

2012

- G01 “Marine Trash and Debris Awareness and E limination”.



## B. Special Conditions

• Subsea Completions

LLOG may potentially complete the proposed wells as subsea completions. Therefore, LLOG will follow the regulations in Title 30 CFR Parts 250.288 through 250.290, which mandates the submittal and

appro val of separate regulatory filings entitled a “Conservation Information Document” and a “Deepwater Operations Plan”, respectively.

• Ocean Current Monitoring

The proposed operations under this Plan are in water depths greater than 400 meters (1,312’); the refore, LLOG will follow the guidelines of the applicable NTL 2009

- G02 by continuously monitoring and gathering ocean current data using Acoustic Doppler Current Profile (ADCP) while

the MODU is on location.

• Breton Sound Area

Mississippi Canyon Block 079 is located within the 200 km zone of the Breton National Wildlife Refuge, and will consider the use of best available control technology as required if the projected air emissions are determined to significantly affect the air quality of an onshore area.Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX K

ENVIRONMENTAL MITIGATION MEASURES INFORMATION (30 CFR Part 250.23 and 250.54)

A. Measures Taken to Avoid, Minimize, and Mitigate Impacts

This section does not apply to the operations as proposed herein.



## D. Incidental Takes

LLOG does not an ticipate the incidental taking of any species as a result of the proposed activities based on the implementation of, and adherence to, the BSEE

NTL No. 2012

- G01 “Marine Trash and Debris Awareness Training and

Elimination” and Joint NTL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Protected Species Reporting”.Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX L

RELATED FACILITIES AND OPERATIONS INFORMATION (30 CFR PART 250. 256)

A. 

## Produced Liquid Hydrocarbon Transportation Vessels

Not applicable to proposed op erations.Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX M

SUPPORT VESSELS AND AIRCRAFT INFORMATION (30 CFR PART 250.2 24 A ND 250.257)

A. 

## General

Personnel involved in the proposed operations will typically use their own vehicles as transportation to and from the selected onshore base; whereas the selected vendors will transport the equipment by a combination of trucks, boats and/or helicopters to the onshore base. The personnel and equipment will then be transported to the drilling rig via the transportation methods and frequencies shown, taking the most direct route feasible as mandated by weather and traffic

conditions:

Type Maximum Fuel Tank Storage Capacity Maximum No. in Area at Any Time Trip Frequency or

Duration Tug Boats 3000 bbls 1 During rig moves on/off Supply Boats 500 bbls 1 Six times weekly

Crew Boats 500 bbls 1 Three times weekly

Aircraft 1900 lbs 1 As Needed Anchor Handling

Vessel 15,100 bbls 1 3

- 4 days

Work Boat 6,450 bbls 1 3

- 4 days



## B. Diesel Oil Supply Vessels

Size of Fuel Supply

Ve ssel Capacity of fuel Supply Vessel Frequency of Fuel

Transfers Route Fuel Supply

Vessel Will Take

180’ OSV 1900 bbls 1/weekly Fourchon, LA to Mississippi Canyon

Block 079



## C. Drilling Fluids Transportation

See Table 2

– Wastes you will Transport and/ or Dispose of Onshore, located in Appendix F of this Plan.



## E. Solid and Liquid Wastes Transportation

See Table 2

– Wastes you will Transport and/or Dispose of Onshore, located in Appendix F of this Plan.



## F. Vicinity Map

Vicinity Plats showing the location of Mississippi Canyon Block 079 relative to

the nearest shoreline and onshore base are included as Attachment L

.Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 

# Vicinity Map

Attachment L (Public Information)Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX N

ONSHORE SUPPORT FACILITIES INFORMATION (30 CFR PART 250.2 25 AND 250.258 )

A. 

## General

The proposed surf ace disturbances in Mississippi Canyon Block 079 will be located approximately 49 miles from the nearest Louisiana shoreline, and approximately 120 miles from the following onshore support base :

Name Location Existing/New/Modified

Martin North Fourchon, LA Existing

LLOG will use an existing onshore base to accomplish the following routine operations:

● Loading/Offloading point for equipment supporting the offshore operations.

● Dispatching personnel and equipment, and does not anticipate the need fo r any expansion of the selected facilities as a result of the activities proposed in this Initial Plan.

● Temporary storage for materials and equipment.

● 24 Hour Dispatcher



## B. Support Base Construction or Expansion

The proposed operations are temporary in nature and do not require any immediate action to acquire additional land or expand existing base facilities.



## C. Support Base Construction or Expansion Timetable

This section of the plan is not applicable to the proposed operations.



## D. Waste Disposal

See Table 2

– Wastes you will Transport and/or Dispose of Onshore, located in Appendix F of this Plan.Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX O COASTAL ZONE MANAGEMENT ACT (CZMA) INFORMATION (30 CFR PART 250.2 26 AND 250.260 )

A. Consistency Certification

. A certificate of Coastal Zone Management Consistency for the States of

Louisiana and Alabama are enclosed as Attachment N



## B. Other Information

Included as Attachment O are the enforceable policies from the State of A labama that are related to OCS Plan Filings.

LLOG has considered all of Louisiana’s enforceable policies and certifies the consistency for the proposed operations.Revised Exploration Plan Mississippi Canyon Block 079

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- G 27259 

# Coastal Zone Management Consistency Statement for

the States of Louisiana and Alabama

Attachment N (Public Information)Revised Exploration Plan Mississippi Canyon Block 079

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- G 27259



# Coastal Zone Management Enforceable Policies for the

State of Alabama

Attachment O (Public Information)

## ALABAMA COASTAL ZONE MANAGEMENT

CONSISTENCY CERTIFICATION

REVISED EXPLORATION PLAN

MISSISSIPPI CANYON BLOCK 079

OCS

- G 27259

The OCS related oil and gas development activities having potential impact on the Alabama

Coastal Zone are based on the location of the proposed facilities, access to those sites, best practical techniques for operations and production equipment, guidelines for the prevention of adverse environmental effects, effective environmental protection, emergency plans and contingency plans. Alabama policies have been addressed below or are cross referenced to the appropriate sections of the Plan:

Topic Cross

Reference Comments

Coastal Resource Use Policies Coastal Development Dock and port facilities in Louisiana will be used. There

wi ll be no new construction, dredging or filling in

Alabama state waters. There will be no new commercial development or capital improvements in Alabama’s coastal zone, nor will there be any employment effects. Mineral Resource Exploration

and Extraction Proposed development operations will take place 49

statute miles from Alabama’s coastline Commercial Fishing Appendix H Hazard Management Appendix C A Shallow Hazards Report was previously submitted to BOEM in order to identify and assess the seafloor a nd shallow geologic conditions in this block

Shoreline Erosion Appendix H Proposed development operations will take place 49

statute miles from Alabama’s coastline

Recreation Appendix H Transportation Appendix B

Natural Resource Protection

Policies Biological Productivity Appendix H Water Quality Appendix H

Water Resources Appendix H Air Quality Appendix G Wetlands and Submerged

Grassbeds Appendix H

Beach and Dune Protection Appendix H

Wildlife Habitat Protection Appendix H Endangered Species Appendix H

Cultural Resources Protection Appendix D Mississippi Canyon Block 079 has been determined to have a high potential for containing archaeological properties. An archaeological report was submitted to BOEM under separate cover.Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX P

ENVIRONMENTAL IMPACT ANALYSIS (30 CFR PART 250.2 27 AND 250.261 )

A. Impact Producing Factors (IPF ’s) From Proposed Activities

The following matrix is utilized to identify the affected environments that could be impacted by these IPF’s. An “x” has been marked for each IPF category that LLOG has determined may impact a particular environment as a

resu lt of the proposed activities. For those cells which are footnoted, a statement is provided as to the applicability of the proposed activities, and where there may be an effect, an analysis of the effect is provided.

Environmental Resources Impact Produc ing Factors (IPF’s)

Emissions (air, noise, light, etc) Effluents (muds, cuttings, other discharges

to the water

column or seafloor) Physical

disturbances

to the seafloor (rig, anchor,

structure emplacement, etc.) Wastes sent

to shore for

treatment
or di sposal Accidents (e.g., oil spills,

chemical spills, H2S releases) Other IPF’s you Identify

Site Specific at Offshore

Location Designated topographic

features (1) (1) (1)

Pinnacle Trend area live

bottoms (2) (2) (2)

Eastern Gulf live bottom s (3) (3) (3) Chemosynthetic communities (4) Water quality X X

Fisheries X X

Marine mammals X (8) X X (8)

Sea turtles X (8) X X (8) Air quality (9) Shipwreck sites (known or potential) (7) X

Prehistoric archaeologic al sites X (7)

Vicinity of Offshore Location

Essential fish habitat X (6) Marine and pelagic birds X Public health and safety (5)

Coastal and Onshore

Beaches (6)

Wetlands (6)

Shorebirds an d coastal nesting

birds (6)

Coastal wildlife refuge

Wilderness areasRevised Exploration Plan Mississippi Canyon Block 079

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### Footnotes for Environmental Impact Analysis Matrix:

1. Activities that may affect a marine sanctuary or topographic feature . Specifically, if the we ll or platform site or any anchors will be on the seafloor within the: (a) 4

- mile zone of the Flower Gardens Banks, or the 3

- mile zone of Stetson Bank; (b) 1000

- m, 1

- mile or 3

- mile zone of any topographic feature (submarine bank) protected by the Topographic Featu res Stipulation attached to an OCS lease; (c) Essential Fish Habitat (EFH) criteria of 500 feet from any no

- activity zone; or (d) Proximity of any submarine bank (500 ft buffer zone) with relief greater than 2 meters that is not protected by the Topographic Stipul ation attached to an OCS lease.

2. Activities with any bottom disturbance within an OCS lease block protected through the Live Bottom (Pinnacle Trend) Stipulation attached to an OCS lease.

3. Activities within any Eastern Gulf OCS block where seafloor habitats a re protected by the Live Bottom (Low

- Relief) Stipulation attached to an OCS lease.

4. Activities on blocks designated by the BOEMRE as being in water depths 300 meters or greater.

5. Exploration or production activities where H2S concentrations greater than 500 ppm might be

encountered.

6. All activities that could result in an accidental spill of produced liquid hydrocarbons or diesel fuel that you determine would impact these environmental resources. If the proposed action is located a

sufficient distance from a resource that no impact would occur, the EIA can note that in a sentence or

two.

7. All activities that involve seafloor disturbances, including anchor emplacements, in any OCS block designated by the BOEMRE as having high

- probability for the occurrence of sh ipwrecks or prehistoric sites, including such blocks that will be affected that are adjacent to the lease block in which your planned activity will occur. If the proposed activities are located a sufficient distance from a shipwreck or prehistoric site th at no impact would occur, the EIA can note that in a sentence or two.

8. All activities that you determine might have an adverse effect on endangered or threatened marine

mammals or sea turtles or their critical habitats.

9. Production activities that involve tr ansportation of produced fluids to shore using shuttle tankers or barges.Revised Exploration Plan Mississippi Canyon Block 079

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## B. Impact Analysis

LLOG does not anticipate any unforeseen incidents from the proposed activities which could significantly impact the associated environment. LLOG activities associated with this Exploration Plan (Plan) will be performed with prudent and industry accepted standards, and in compliance with the federal agency regulations and oversight.

The “Oil Spills Information” Section of this Plan details the potential worse case discharge volume which has been calculated based on the new Bureau of Ocean Energy Management, Regulation and Enforcement (BOEMRE) Notice to Lessees (NTL 2010

- N06). Response details associated with an unanticipated spill from

this si te are detailed in our Regional Oil Spill Response Plan (OSRP) which outlines the potential spill scenario, spill volumes, anticipated trajectory of the spill, response equipment available, and actions to be taken to respond to the potential spill incident . Additional measures implemented by LLOG is trajectory analyses to be obtained prior to and during the proposed activities, contractual arrangements with well control specialists and preliminary reviews of potential well intervention scenarios, and to su pplement existing contracted response/clean

up equipment with equipment offered by Helix which specializes in subsea deepwater well intervention, containment and processing.



## Site Specific at Offshore Location

• Designated Topographic Features

There a re no anticipated emissions, effluents, physical disturbances to the seafloor, wastes transported to shore, and/or accidents from the proposed activities that could cause impacts to topographic features.

The proposed surface disturbances within Mississipp i Canyon Block 079

is located approximately 60 miles away from the from the closest designated topographic feature (Sackett Bank).

The crests of these designated topographic features in the northern Gulf are typically found below 10 m; therefore, concentr ated oil from a surface spill is not likely to reach sessile biota. Subsurface spills could cause adverse impacts to a designated topographic feature; however, due to the offset distance this should not have an impact.

In the event of an unanticipated sp ill, LLOG would immediately implement its Regional Oil Spill Response Plan and active source control and countermeasures to minimize these potential impacts.Revised Exploration Plan Mississippi Canyon Block 079

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### • Pinnacle Trend Area Live Bottoms

There are no anticipated emissions, effluents, physical distu rbances to the seafloor, wastes sent to shore and/or accidents from the proposed activities that could cause impacts to a pinnacle trend area.

The proposed surface disturbance within Mississippi Canyon Block 079 is

located approximately 22 miles from the closest pinnacle trend live bottom stipulated block. The crests of these pinnacle trend areas are much deeper

than 20 m. In the event of an accidental oil spill from the proposed activities, the gravity of such oil (high gravity condensate and/or diesel

f uel) would rise to the surface, quickly dissipate, and/or be swept clear by currents moving around the bank; and thus not impacting the pinnacles.

During the surface location disturbance review, LLOG reviews potential surface impacts, and would be able to identify any pinnacles within the vicinity and would avoid placement of any surface disturbances such as a drilling rig and associated anchors. These surface location disturbance areas would be avoided and/or mitigated during the review and approval

proc ess by the BOEM.

In the event of an unanticipated spill, LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Eastern Gulf Live Bottoms

There are no an ticipated emissions, effluents, emissions physical disturbances to the seafloor, wastes sent to shore, and/or accidents from the proposed activities that could cause impacts to Eastern Gulf live

bottoms.

The proposed surface disturbance within Mississippi Canyon Block 079 are located approximately 22 miles from the closest Eastern Gulf live bottoms stipulated block. During the surface location disturbance review, LLOG previews potential surface impacts, and would be able to identify any live bottom areas within the vicinity and would avoid placement of any surface disturbances such as a drilling rig and associated anchors. In the event of an accidental oil spill from the proposed activities, the gravity of such oil (high gravity condensate and/or diesel f uel) would rise to the surface, quickly dissipate, and/or be swept clear by currents moving around the bank; and thus not impacting the Eastern Gulf live bottoms because of the depth of the features and dilutions of spills.Revised Exploration Plan Mississippi Canyon Block 079

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### In the event of an unanticipate d spill, LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Chemosynthetic Communities

Water depths in Mississippi Canyon Block 079 range from 3,413 ’ to 4,266 ’ including anchor radius. T he proposed activities are not located within the vicinity of any known chemosynthetic communities, which typically o ccur in water depths greater than 300 meters. T here are no anticipated emissions, effluents, emission s physical dist ur b a nces to seafloor, wastes sent to shore, and/or accidents from the proposed activities that could impact these types of communities.

• Water Quality

Bottom disturbances which may result based on placement of drilling rigs during an expl oratory phase could increase water column turbidity and redistribution of any accumulated pollutants in the water column; which could cause temporary impacts on water quality conditions in the immediate vicinity.

Associated overboard effluents are regulat ed by the EPA Region VI NPDES General Permit GMG290000 which mandates volume discharge rate limitations, certain testing requirements for toxicity and oil and grease limitations. As such, it is not anticipated these discharges authorized under the approve d EPA NPDES permit will cause significant adverse impacts to water quality.

Certain wastes generated from the proposed activities will be manifested and sent to shore for treatment and/or disposal at approved facilities. Other waste which may be consider ed hazardous will be collected and transported in sealed containers and transported to approve disposal sites in accordance with the RCRA regulations and guidelines.

An accidental oil spill release from the proposed activities, and cumulative

similar disc harge activity within the vicinity could potentially cause temporary impacts to water quality. In the event of such a release, the water quality would be temporarily affected by the dissolved components and small droplets. Currents and microbial degradat ion would remove the oil from the water column or dilute the constituents to background levels.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil SpillRevised Exploration Plan Mississippi Canyon Block 079

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### Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Fisheries

Accidental oil spill releases from the proposed activities, and cumulative similar discharge activi ty within the vicinity may potentially cause some detrimental effects on fisheries. It is unlikely a spill would occur; however, such a release in open waters closed to mobile adult finfish or shellfish would likely be sub

- lethal and the extent of damage would be reduced to the capability of adult fish and shellfish to avoid a spill, to metabolize hydrocarbons, and to excrete both metabolites and parent compounds.

In the event of an unanticipated blowout, LLOG will implement industry

wide standards for us ing proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Marine Mammals

GulfCet II studies reveal t hat cetaceans of the continental shelf and shelf edge are comprised of bottlenose dolphin and Atlantic spotted dolphin. Squid eaters, including dwarf and pygmy killer whale, Risso’s dolphin and Cuvier’s beaked whale occur most frequently along the upper s lope in areas outside of anticyclones.

As a result of the proposed activities, marine mammals may be adversely impacted by emissions, effluents, waste sent to shore and/or accidents.

Chronic and sporadic sub

- lethal effects would occur that may stress and /or weaken individuals of a local group or population and make them more susceptible to infection from natural or anthropogenic sources. Few lethal effects are expected from an accidental oil spill, chance collisions with service vessels and ingestion of plastic material.

The net results of any disturbance would depend on the size and percentage of the population affected, ecological importance of the disturbed area, environmental and biological parameters that influence an animal’s sensitivity to disturb ance and stress, and the accommodation time in response to prolonged disturbance (Geraci and St. Aubin, 1980). Collisions between cetaceans and ship could cause serious injury or death (Laist et al., 2001).Revised Exploration Plan Mississippi Canyon Block 079

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### Sperm whales are one of 11 whale species that a re hit commonly by ships (Laist et al., 2001). Collisions between OCS vessels and cetaceans within the project area are expected to be unusual events.

LLOG does not anticipate the incidental taking of any marine mammals as the result of the proposed acti vities. The proposed activities will be conducted by our company and its contractors under the additional criteria

addressed in BSEE NTL No. 2012

- G01 “Marine Trash and Debris Awareness Training and Elimination” and Joint NTL No. 2012

- G01

“Vessel Strike Av oidance and Injured/Dead Protected Species Reporting”. The proposed operations will be conducted in accordance with the regulations via manifesting waste sent to shore and ensuring such wastes are contained to prevent loss. Informational placards will be maintained on the facility, and LLOG and the associated contractors obtain training on at least an annual basis to ensure personnel are aware of the reporting and operational requirements.

LLOG will conduct the proposed activities under EPA’s Region VI NPDES General Permit GMG290000 which authorizes the discharge of certain effluents, subject to certain limitations, prohibitions and recordkeeping requirements. As such, it is not anticipated these discharges authorized under the approved EPA NPDES permi t will not cause significant adverse impacts to water quality.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Region al Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Sea Turtles

Small numbers of turtles could be killed or injured by chance collision with service vessels or by eating indigestible trash, part icularly plastic items accidentally lost from drilling rigs, production facilities and service vessels. Drilling rigs and project vessels produce noise that could disrupt normal behavior patterns and create some stress to sea turtles, making

them more sus ceptible to disease. Accidental oil spill releases are potential threats which could have lethal effects on turtles. Contact and/or consumption of this released material could seriously affect individual sea turtles. Most OCS related impacts on sea turt les are expected to be sub

lethal. Chronic and/or avoidance of affected areas could cause declines in survival or productivity, resulting in gradual population declines.

LLOG will conduct the proposed activities under EPA’s Region VI

NPDES General Permit GMG290000 which authorizes the discharge ofRevised Exploration Plan Mississippi Canyon Block 079

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### certain effluents, subject to certain limitations, prohibitions and recordkeeping requirements. As such, it is not anticipated these discharges authorized under the approved EPA NPDES permit will not cause sign ificant adverse impacts to water quality.

Additionally, LLOG and its contractors will conduct the proposed activities under the additional criteria addressed by BSEE NTL No. 2012

- G01 “Marine Trash and Debris Awareness Training and Elimination” and

Joint N TL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Protected Species Reporting”. The proposed operations will be conducted in accordance with the regulations via manifesting waste sent to shore and ensuring such wastes are contained to prevent loss . Informational placards will be maintained on the facility, and LLOG and the associated contractors obtain training on at least an annual basis to ensure personnel are aware of the reporting and operational requirements.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these pot ential impacts.

• Air Quality

The proposed activities are located approximately 49 miles to the nearest shoreline. LLOG has addressed the air quality issues associated with the proposed activities in the “Air Emissions Information” section of this Plan

a s a result of the proposed activities.

• Ship Wreck Sites (Known or Potential)

There are no physical disturbances to the seafloor which could impact known or potential shipwreck sites, as the review of high resolution

shallow hazards data indicate there ar e no known or potential shipwreck sites located within the survey area. As such, LLOG does not anticipate any IPF’s as a result of the proposed activities.

• Prehistoric Archaeological Sites

There are no physical disturbances to the seafloor which could c ause impacts to prehistoric archaeological sites, as the review of high resolution shallow hazards data and supporting studies did not reflect the occurrence of prehistoric archaeological sites. As such LLOG does not anticipate any

IPF’s as a result of th e proposed activities.Revised Exploration Plan Mississippi Canyon Block 079

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### Vicinity of Offshore Location

• Essential Fish Habitat

As a result of the proposed activities, essential fish habitat may be adversely impacted by effluents and/or accidents.

An Accidental oil spill that may occur as a result of t he proposed activities has potential to cause some detrimental effects on essential fish habitat. It is unlikely that an accidental oil spill release would occur; however, if a spill were to occur in close proximity to finfish or shellfish, the effects

wo uld likely be sub

- lethal and the extent of damage would be reduced to the capability of adult fish and shellfish to avoid a spill, to metabolize hydrocarbons and to excrete both metabolites and parent compounds.

In the event of an unanticipated blowout, L LOG will implement industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impa cts.

• Marine and Pelagic Birds

As a result of the proposed activities, marine and pelagic birds may be adversely impacted by an accidental oil spill, by the birds coming into

contact with the released oil.

In the event of an unanticipated blowout result ing in an oil spill, it is likely to have an impact based on the industry wide standards for using proven equipment and technology for such responses. In that event, LLOG will implement the Regional Oil Spill Response Plan and activate source

control and countermeasures to minimize these potential impacts.

• Public Health and Safety

There are no anticipated emissions, effluents, wastes sent to shore, and/or accidents from the proposed activities that could cause impacts to the public health safety. BOEM c lassified the proposed objective area as absent of hydrogen sulfide.Revised Exploration Plan Mississippi Canyon Block 079

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### Coastal and Onshore

• Beaches

As a result of the proposed activities, beaches may be adversely impacted by an accidental oil spill. However, due to the distance from shore ( approxim ately 49 miles), and the response capabilities that would be implemented, no significant adverse impacts are expected. Both historical spill data and the combined trajectory/risk calculations referenced in the publication of OCS EIA/EA BOEMRE 2002

- 052 ind icate there is little risk of contact or impact to the coastline and associated environmental

resources.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for such responses. L LOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Wetlands

As a result of the proposed activities, wetlands may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 49 miles) and the response capabilities that would be implemented, no significant adverse impacts are expected. Both historical spill data and the combined trajectory/risk calculations re ferenced in the publication of OCS EIA/EA BOEMRE 2002

- 052 indicate there is little risk of contact or impact to the coastline and associated environmental

resources.

In the event of an unanticipated blowout, LLOG will implement industry

wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Shore Birds and Coastal Nesting Birds

A s a result of the proposed activities, shore birds and coastal nesting birds may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 49 miles) and the response capabilities that would be implemented, no significant adverse impacts are expected. Both historical spill data and the combined trajectory/risk calculations referenced in the publication of OCS EIA/EA BOEMRE 2002

- 052 indicate there is little risk of contact or impact to the coastline and

associa ted environmental resources.Revised Exploration Plan Mississippi Canyon Block 079

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### In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan and act ivate source control and countermeasures to minimize these potential impacts.

• Coastal Wildlife Refuges

As a result of the proposed activities, coastal wildlife refuges may be adversely impacted by an accidental oil spill. However, due to the

distance fr om shore (approximately 49 miles) and the response capabilities that would be implemented, no significant adverse impacts are expected. Both historical spill data and the combined trajectory/risk calculations referenced in the publication of OCS EIA/EA BO EMRE 2002

- 052 indicate there is little risk of contact or impact to the coastline and

associated environmental resources.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for s uch responses. LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Wilderness Area

As a result of the proposed activities, wilderness areas may be adv ersely impacted by an accidental oil spill. However, due to the distance from shore (approximately 49 miles) and the response capabilities that would be implemented, no significant adverse impacts are expected. Both historical spill data and the combined trajectory/risk calculations referenced in the publication of OCS EIA/EA BOEMRE 2002

- 052 indicate there is little risk of contact or impact to the coastline and associated environmental

resources.

In the event of an unanticipated blowout, LLOG will imple ment industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

Other Re sources Identified

LLOG has not identified any other environmental resources other than those

addressed above.Revised Exploration Plan Mississippi Canyon Block 079

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## C. Impacts of Proposed Activities

LLOG does not anticipate any impacts on the offshore site specific locations, offshore vicinity, and/or coastal and onshore environmental conditions based on the potential impacts identified in the EIA worksheets and historical operations in the exploration of this reservoir.



## D. Environmental Hazards

Mississippi Canyon Block 079 is not located within a geographic ar ea impacted by strong environmental phenomena, other than potential hurricanes in the Gulf of

Mexico. The Gulf of Mexico may experience several hurricanes throughout the season which typically runs from June through November. A severe hurricane may impact the activities covered in this Plan. Such impacts may be damage to the drilling rig, the unanticipated release of hydrocarbons depending upon the current status of the well. Additionally, th is block has the potential to be affected by the “Loop Current” which is a warm ocean current in the Gulf of Mexico that flows northward between Cuba and the Yucatan Peninsula, moves northward into the Gulf of Mexico, then loops east and south before exiting to the east through the Florida Straits. While the loop current is present approximately 95% of the time, it is most active in the summer and fall seasons.

To mitigate potential impacts to the well during impending hurricanes or loop currents, LLOG will take precautionary measures by securing the well, rig and

ev acuation of personnel; and will comply with the requirements of NTL’s 2008

- G09 and 2009

- G10.



## E. Alternatives

LLOG did not consider any alternatives to reduce environmental impacts as a result of the proposed activities.



## F. Mitigation Measures

LLOG will not i mplement any mitigation measures to avoid, diminish or eliminate potential environmental resources, other than those required by regulation and policy.



## G. Consultation

LLOG has not contacted any agencies or persons for consultation regarding potential impac ts associated with the proposed activities. Therefore, a list of such entities is not being provided.Revised Exploration Plan Mississippi Canyon Block 079

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## H. Preparers

Questions or requests for additional information should be made to LLOG’s authorized representative of this Plan:

Kathy Gowland Regulato ry Specialist 1001 Ochsner Boulevard, Suite 200 Covington, Louisiana 70433

985

- 801

- 4300 (Phone) kathygo@llog.com



## I. References

The following documents were utilized in preparing the Environmental Impact

Assessment:

Document Author Dated

Shallow Ha zard Surveys Tesla

GEMS Geosciences, LLC Berger Geosciences, LLC 20 0 6

20 07

2013 BOEMRE Environmental Impact Statement Report No.

2007

- 003 Bureau of Ocean Energy Management, Regulation, and Enforcement 2007

Title 30 CFR Part 250 Subpart B (250.216 / 250.2 21 /

250.223 / 250.227 Bureau of Ocean Energy Management, Regulation, and Enforcement 2006

NTL 2000

- G16 “Guidelines for General Lease Surety

Bonds” Bureau of Ocean Energy Management, Regulation, and Enforcement 2000

NTL 2005

- G07 “Archaeological Resource Surveys and Reports” Bureau of Ocean Energy Management, Regulation, and Enforcement 2005

NTL 2006

- N06 “Flaring and Venting Regulations” Bureau of Ocean Energy Management, Regulation, and Enforcement 2006

NTL 2006

- G07 “Revisions to the List of OCS Lease B locks Requiring Archaeological Surveys and Reports:” Bureau of Ocean Energy Management, Regulation, and Enforcement 2006

JOINT NTL 2012

- G02 “Implementation of seismic Survey Mitigation Measures and Protected Species Observer Program” Bureau of Ocean Energ y Management, Regulation, and Enforcement 2012

BSEE NTL 2012

- G01 “Marine Trash & Debris Awareness

& Elimination” Bureau of Ocean Energy Management, Regulation, and Enforcement 2012

JOINT NTL 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Protective S pecies” Bureau of Ocean Energy Management, Regulation, and Enforcement 2012

NTL 2008

- G04 “Information Requirements for Exploration Plans and Development Operations Coordination

Documents” Bureau of Ocean Energy Management, Regulation, and Enforcement 2008

NTL 2008

- N05 “Guidelines for Oil Spill Financial Responsibility for Covered Offshore Facilities” Bureau of Ocean Energy Management, Regulation, and Enforcement 2008

NTL 2008

- G06 “Remotely Operated Vehicle Surveys in Deepwater” Bureau of Ocean Energy Man agement, Regulation, and Enforcement 2008

NTL 2008

- N07 “Supplemental Bond Procedures Bureau of Ocean Energy Management, Regulation, and Enforcement 2008

NTL 2008

- G20 “Revisions to the List of OCS Lease Blocks Requiring Archaeological Resource Surveys and Reports” Bureau of Ocean Energy Management, Regulation, and Enforcement 2008

NTL 2009

- G02 “Ocean Current Monitoring” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

- G27 “Submitting Exploration Plans and Development Operation s Coordination Documents” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

- G29 “Implementation Plan for Transition from

North American Datum 27 to North American Datum 83” Bureau of Ocean Energy Management, Regulation, and Enfo rcement 2009

NTL 2009

- G31 “Hydrogen Sulphide” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009Revised Exploration Plan Mississippi Canyon Block 079

– OCS

- G 27259 NTL 2009

- G34 “Ancillary Activities” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

- G38 “Drilling Windows, Eas tern Gulf of

Mexico” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

- G39 “Biologically

- Sensitive Underwater

Features and Areas” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

- G40 “Deepwater Benth ic Communities” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

- N11 “Air Quality Jurisdiction on the OCS” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2010

- N05 “Increased Safety Measures for Energy Development on the OCS” Bureau of Ocean Energy Management, Regulation, and Enforcement 2010

NTL 2010

- N06 “Information Requirements for EP’s, DOCD’s, DPP on the OCS” Bureau of Ocean Energy Management, Regulation, and Enforcement 2010

NPDES General Permit GMG290000 EPA

– Region VI 20 12 Regional Oil Spill Response Plan LLOG Exploration Offshore, L.L.C. 201 2Revised Exploration Plan Mississippi Canyon Block 079

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## APPENDIX Q

ADMINISTRATIVE INFORMATION (30 CFR Part 250.228 and 250.262)

A. Exempted Information Description (Public Information Copies only)

Excluded from the Public Information copies are the following:

• Proposed bottom hole location information

• Proposed total well depths (measured and true vertical depth)

• Production Rates and Life of Reserves

• New and Unusual Technologies

• Geological and Geophysical Attachments



## B. Bibliography

The following documents were utilized in preparing this Plan:

Document Author Dated

Shallow Hazard Surveys Tesla GEMS Geosciences, LLC Berger Geosciences, LLC 20 06

20 07

2013 BOEMRE Environmental Impact Statement Report

– No.

2007

- 003 Bureau of Ocean Energy Management, Regulation, and Enforcement 2007

Regional Oil Spill Response Plan LLOG Exploration Offshore, L.L.C. 201 2