UNITED STATES GOVERNMENT MEMORANDUM

To: Public Information (MS 5030)

Plans Section, Office of Field Operations (MS 5231)

Public Information copy of Exploration Plan

Control # - N-09709

Type - Initial Exploration Plan

Lease(s) - OCS-G33178 Block - 816 Mississippi Canyon Area

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

Subsea Wells A, B, C, and D

DP Semi or Semi-Submersible

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.

Karen Dunlap

Plan Coordinator Description -

Rig Type - Subject: From: May 22, 2013

### OCS-G-33178, Mississippi Canyon Block 816

Plan Control No. N-9709



## RECORD OF CHANGES

Date of

Submittal Page Amended Brief Synopsis

04/05/2013 Complete Proprietary

and Public Information Copies Resubmitted entire Proprietary and Public Information Copies with amendments indicated in email from BOEM dated April 1,

2013

04/08/2013 Public Information Copy Re-submitted complete Public Information Copy to include the Oil Spill Discussion
04/12/2013 Attachment F and H Replaced Structure Map and Geological Cross Section (submitted revised plats)
04/16/2013 Attachment F, H and J Revised Structure Map, Geological Cross Section and Bio/Strat

Column
04/29/2013 Attachment E, F, H & J Submitted revised plats to replace the following: Geological Description, Structure Map, Geological Cross Section and

Bio/Strat Column
05/21/2013 Vicinity Plat Added arrow to nearest shore line

# LLOG EXPLORATION OFFSHORE, L.L.C.

1001 Ochsner Boulevard, Suite 200 Covington, Louisiana 70433



# INITIAL EXPLORATION PLAN

OCS

- G

- 33178

MISSISSIPPI CANYON BLOCK 816

PREPARED BY:

Kathy Gowland Regulatory Specialist

985

- 801

- 4300 (Main)

98 5

- 801

- 4317 (Direct)

kathygo@llog.com

March 27, 2013

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

INITIAL EXPLORATION PLAN

OCS

- G

- 33178

MISSISSIPPI CANYON BLOCK 816

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 InformationMississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 1 

## APPENDIX A

PLAN CONTENTS
(30 CFR Part 250.211 and 250.241)

A. Plan information

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

- G04 and NTL

2010

- N06, LLOG Exploration Offshore, LLC proposes the drilling, completion

, testing

and install ation of subsea wellhead and/or manifold for proposed locations for Lease

OCS

- G

- 33178 , Mississippi Canyon Block 816

, Wells A , B, C and D

.

The current lease operator and ownership are as follows:

Area/Block Lease No. Operator Ownership
Mississippi Canyon Block 816

, OCS

- G 33178 LLOG Exploration Offshore, Inc. LLOG Exploration Offshore, Inc



### Included as Attachment A is Form BOEM 1 37 “OCS Plan Information Form”, which provides for the drilling, sub

- sea completion and testing of all well locations.

. 

## B. L oc ation

Attachment B

– Well Location Plat

Attachment C

– Bathymetry Map

– Seafloor disturbance area with anchor

R adius



## C. Safety & Pollution F eatures

LLOG will utilize either a DP semi

- submersible drilling rig or a semi

- submersible rig for the pr oposed 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 well control, pollution p revention, 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 life 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

.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 2 

### D. 

## Storage Tanks and Vesse ls

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

- submersible Rig:

Type of Stor age
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

Forward 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 C apacity
(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 measures : 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

– Guidance for Deepwater Drillers to Comply with Strengthened Safety and Environmental Standards.High Island Block A-7 (OCS-G 32758) 10/3/2011 Initial Exploration Plan 3 

# OCS Plan Information Form

Attachment A
(Public Information)U.S. Department of the Interior OMB Control Number: 1010-0151 Minerals Management Service OMB Approval Expires: 12/31/2011


### OCS PLAN INFORMATION FORM

General Information

Type of OCS Plan: Exploration Plan (EP) Deve lopment Operations Coordination Document (DOCD)

Company Name: MMS Operator Number:

Address: Contact Person:

Phone Number:

E-Mail Address:

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

Objective(s): Oil Gas Sulphur Salt Ons hore Base: Distance to Closest Land (Miles):

Description of Proposed Activities (Mark all that apply)

Exploration drilling Development drilling

Well completion Installation of production platform

Well test flaring (for more than 48 hours) Installation of production facilities

Installation of caisson or platform as well protec tion structure Installation of satellite structure

Installation of subsea wellheads and/ or manifolds Commence production

Installation of lease term pipelines Other (Specify and describe)

Have you submitted or do you plan to submit a Conservation Information Document to accompany this plan? Yes No

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

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

Do you propose any activities that may disturb an MMS-des ignated high-probability archaeological area? Yes No

Have all of the surface locations of your proposed activities been previously reviewed and approved by MMS? Yes No

Tentative Schedule of Proposed Activities

Proposed Activity Start Date End Date No. of Days

Description of Drilling Rig Description of Production Platform

Jackup Drillship Caisson Tension leg platform

Gorilla Jackup Platform rig Well protector Compliant tower

Semisubmersible Submersible Fixed platform Guyed tower

DP Semisubmersible Other (Attach Descripti on) Subsea manifold Floating production system

Drilling Rig Name (If Known): Spar Other (Attach Description)

Description of Lease Term Pipelines

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



### MMS FORM MMS-137 (December 2008 - Supersedes all previous editi ons of form MMS-137 which may not be used.) Page 1 of 2

### 2

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

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 C oordinate 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 MMS collects this information as part of an applicant’s Exploration Plan or Development Operations Coordination Document submitted for MMS approval. We use the information to facilitate our review and data entry for OCS plans. We will protect proprieta ry data according to the Freedom of Information Act and 30 CFR 250.197. An agency may not conduct or sponsor, and a pe rson 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 fo r preparing Exploration Plans and Development Operations

Coordination Documents. We estimate that burden to average 600 hours per response, 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 comp leting and reviewing the forms associated with subpart B. Direct comments regarding the burden estimate or any other as pect of this form to the Information Collection Clearance Officer, Mail Stop 5438, Minerals Management Service, 1849 C Street, NW., Washington, DC 20240.



### MMS FORM MMS-137 (December 2008 - Supersedes all previous editi ons of form MMS-137 which may not be used.) Page 2 of 2High Island Block A-7 (OCS-G 32758) 10/3/2011 Initial Exploration Plan 4 

# Well Location Plats

Attachment B
(Public Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 5 

# Bathymetry Map

Attachment C
(Public Information)Bathymetry(ft)InfrastructureWellsProposedCircle represents2,000’ radius circlearound wellExistingCircle represents15,000’ radiuscircle around wellMC 816-BMC 816-CMC 816-DG16647 #5G19996 #3MC 772MC 771MC 773Devil’sTowerFigure W-1MC 816Seafloor rendering and potential anchoring radius for each proposed well1 MILEMISSISSIPPICANYONAREAInfrastructurePipelinesGas, activeOil, activeUmbilical, activePlatformMC 816-AG18294 #1MC 860MC 856MC 815 MC 816MC 861MC 81733Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 6 

## APPENDIX B

GENERAL INFORMATION
(30 CFR Part 250.213 and 250.243)

A. Applications and Permits

The re are no Federal/State applications to be submitted for the acti vities provided for in 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 p ropose using any new and/or unusual technology for the operations proposed this Initial Plan.



## D. Bonding Statement

The bond requirements for the activities and facilities proposed in this Initial EP are satisfied by an area wide bond, furnished and maintai ned according to 30 CFR Part 256; subpart I; NTL No. 2006

- G16, “Guidelines for General Lease Surety Bonds,” and additional security under 30 CFR 256.43(d) and National NTL No. 2003

- N06 “Supplemental Bonding Procedures.”



## E. Oil Spill Responsibility (OSFR)

L LOG Exploration Offshore, 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 99

- N01, “Guidelines for Oil Spill Financial Responsibility for

Cove red Facilities.”Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 7 

## 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

See the following Worst C ase Discharge Calculations (Proprietary)

– Attachment D and

Blowout Scenario, including Site Specific Proposed Relief Well and Intervention Planning and Relief Well Response Time Estimate (Public Information)

- Attachment

D

- 1.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 8 

# NTL 2010

- N06 Data

Worst Case Discharge Calculations

Attachment D

(Proprietary Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 9 

# NTL 2010

- N06 Data

Blowout Scenario

Attachment D

- 1
(Public Information)BLOWOUT SCENARIO

MC 81 6

OCS

- G

- 33178 Created by: S.L. Stegeman

Last Revised: 4/4/2013 Page 1 of 6

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

Well Surface Location WD X (NAD 27) Y (NAD 27) Latitude Longitude

MC 816 “A ” OCS

- G

- 3 3178 5 53 7 1, 063

, 728 ’ 10, 22 6

, 209 ’ 28 ° 10 ’ 05.377 ” 88 ° 47 ’ 2 5

. 257”

MC 81 6 “ B ” OCS

- G

- 3 3178 5 675 1, 071,079 ’ 10, 227

, 331 ’ 28 ° 10 ’ 1 7. 55 ” 88 ° 46 ’ 03

. 246 ”

MC 816 “ C ” OCS

- G

- 3 3178 5 655 1, 074

, 669 ’ 10, 228 ,4 79 ’ 28 ° 10 ’ 29

. 43 3 ” 88 ° 45 ’ 2 3 .3 2 3 ”

MC 816 “ D ” OCS

- G

- 3 3178 5 550 1, 06 5

, 080 ’ 10, 22 7

, 595 ’ 28 ° 10 ’ 1 9. 294 ” 88 ° 4 7 ’ 10

. 311 ”

INFORMATION REQUIREMENTS

A) Blowout scenario

The MC 816 prospect to be drilled to potential outlined in the Geological and Geophysical Information Section of this plan utilizing a typica l 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 hydrocarbon 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 thi s unrestricted blowout scenario.

B) Estimated flow rate of the potential blowout

Category EP Type of Activity Drilling Facility Location (area / block) MC 816 Facility Designation MODU Distance to Nearest Shoreline (miles)

~ 55 Uncontrolled Blowout (Vo lume per day) 86,772 bbls Type of Fluid Crude

C) Total volume and maximum duration of the potential blowout

Duration of Flow (days) 7 9 days total (see Relief Well Response Estimate below ) Total Volume of Spill 5.02 MMBO based on 79 days of uncont rolled flow First Day Uncontrolled Blowout Volume 86,772 bbls Average Blowout for First 30 Days 67,938 bbls per day

Total Blowout Volume for First 30 Days 2.04 MMBO based on 30 days of

uncontrolled flow

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

Omitted from Public Information Copie sBLOWOUT SCENARIO

MC 81 6

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Last Revised: 4/4/2013 Page 2 of 6

Confidential

2 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

veloci ties 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/collapse/bridge over within a span of a few days, significantly reducing the outflow of t he 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 contrac ted 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 event due to reduced pressures at the wellhead

, less exposure of well fluids to erode a nd 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 includes:

• Secondary Acoustic BOP Control System

– typically fitted on DP MODU’s pres ently 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 umbilical control system. This system typically can establish BOP controls from the surfac e 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 fo llowing:

- 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 fu nction the specific BOP controls. These functions will be tested at the 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 c lose

- 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 sequence 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 intervention s ystems 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 bein g 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 beBLOWOUT SCENARIO

MC 81 6

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Last Revised: 4/4/2013 Page 3 of 6

Confidential

3 deployed which may include the Helix Producer 1 capable of hand ling 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

disc onnect 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 requir ed.

With the current activity level in the GOM, 25 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 Gro up. 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 locat ion 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 on th e 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 capable o f 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 results 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.

OPERATION SPECIFIC VESSEL OF OPPORTUNITY

Intervention and Containment • Helix Q4000 (DP Semi)

• Helix Producer 1 (DP FPU)

Relief Well Drilling Rigs • Diamond Ocean Victory (Moored Semi)

• Ensco 8502 (DP Semi)

• Transocean Enterprise (DP Drillship)

ROV / Mult i

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

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

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

– 75,000’)

• Other ROV Vessels

– (Chouest, HOS, 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 blowout are largely based on proper planning and communication,BLOWOUT SCENARIO

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Confidential

4 identification of potential hazards, training and experience of personnel , use o f good oil field practices and proper equipment that is properly maintained and inspected f or executing drilling operations of the proposed well or wells to be drilled.

When planning and designing the well, ample time is spent analyzing offset data , perfo rming any needed earth modeling and identifying any potential drilling hazards or well specific conditions to safeguard the safety of the crews when well construction operations are underway. Once the design criteria and well design is established, the we ll 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

exte rnal flow paths in addition to proper positive and negative testing of the barriers

.

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

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

- 2010

- 034

Interim Final Rules

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

Good communication between rig pe rsonnel, 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 consideration s. Daily meetings are conducted to discuss planning and potential hazards to ensure state of preparedness

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

Use of established good oil field practices that safeguard crews and equipment are integrated to incorporate LLOG’s, the contractor and service prov ider policies.

Additional personnel and equipment will be used as needed to elevate awareness and provide real time monitoring of well conditions while drilling such as MWD/LWD/PWD tools used in the bottom

hole assemblies. The tool configuration for eac h 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

an d 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 flui ds, 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 geologi c markers and pore pressure indicators is used to identify potential well condition changes.

Proper equipment maintenance and inspection program for same to before the equipment is required. Programmed equipment inspections and maintenance will be perfor med to ensure the equipment operability and condition. Operations will cease as needed in order to ensure equipment 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 theBLOWOUT SCENARIO

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5 proposed prospect. Specific plans are integrated into the Helix Well Containment Groups procures to be approved and submitted with the Applic ation for Permit to Drill. Equipment availability, backup equipment and adaptability to the potential scenarios will need to be addressed based on the initial site assessment of the seafloor conditions for intervention operations. Relief well equipment s uch as backup wellhead equipment and tubulars will be available in LLOG’s inventory for immediate deployment as needed to address frilling the relief well(s).

SITE SPECIFIC PROPOSED RELIEF WELL AND INTERVENTION PLANNING

No platform was considered for dri lling 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 sce narios for the potential geologic targets for the proposed wells. A total of 10 relief well surface locations are proposed for the 5 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 locations have been selected based on proximity to the targets sands and potential shallow hazards.

Proposed EP Well Proposed Relief Well X (NAD 27) Y (NAD 27)

MC 816 “A” OCS

- G

- 3 3178 MC 816 R1 1, 064

, 310 ’ 10, 277

, 699 ’

MC 816 R 2 1, 066

, 253 ’ 10, 225

, 292 ’

MC 816 R 3 * 1, 065

, 401 ’ 10, 223

, 917 ’

MC 816 “ B ” OCS

- G

- 3 3178 MC 816 R 4 * 1, 068

, 828 ’ 10, 226

, 243 ’

MC 816 R 5 1, 070 ,0 35 ’ 10, 224

, 66 5’

MC 816 R 6 1, 071

, 8 27 ’ 10, 225

, 008 ’

MC 816 “ C ” OCS

- G

- 3 3178 MC 816 R 7 1, 068

, 875 ’ 10, 229

, 07 3’

MC 816 R 8 1, 072

, 181 ’ 10, 227

, 159 ’

MC 816 R 9 1, 072

, 001 ’ 10, 228

, 081 ’

MC 300 10* 1, 073

, 683 ’ 10, 228

, 255 ’

MC 816 “ D ” OCS

- G

- 3 3178 R3, R4

“*” indicates common relief well site to mo re than 1 exploration plan well

RELIEF WELL RESPONSE TIME ESTIMATE

OPERATION TIME ESTIMATE (DAYS)

IMMEDIATE RESPONSE

• safeguard personnel, render first

- aid

• make initial notifications

• implement short term intervention (if possible)

• implement spil l control

• develop Initial Action Plan 1

INTERIM REPSONSE

• establish Onsite Command Center and Emergency Management Team

• assess well control issues

• mobilize people and equipment (Helix DW Containment System)

• implement short term int ervention and containment (if possible)

• develop Intervention Plan

• initiate relief well planning

• continue spill control measures 4BLOWOUT SCENARIO

MC 81 6

OCS

- G

- 33178 Created by: S.L. Stegeman

Last Revised: 4/4/2013 Page 6 of 6

Confidential

6 INTERVENTION AND CONTAIMENT OPERATIONS

• mobilize equipment and initiate intervention and containment o perations

• 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 measu res

• continue spill control measures

• drill relief well (s) 4 0

PERFORM HYDRAULIC KILL OPERATIONS / SECURE BLOWNOUT WELL

• continue intervention and containment measures

• continue spill control measures

• perform hydraulic kill operations, monitor well, secure well 20

ESTIMATED TOTAL DAYS OF UNCONTROLLED FLOW 7 9
SECURE RELIELF WELL(S) / PERFORM P&A / TA OPERATIONS / DEMOBE 30

TOTAL DAYS 1 0 9Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 10 

## APPENDIX C

GEOLOGICAL A ND 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

Included as Attachment F are cur rent 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 each proposed bottom hole location and applicable geological cross section.



## C. Inter preted 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 i nterpreted geological cross section depicting the proposed well locations and depth of the proposed wells is included as Attachment H . Such cross section corresponds to each seismic line being submitted.



## E. Shallow Hazards Report

Berger Geosciences, LLC conducted a Shallow Hazards Assessment, Benthic Communities Evaluation, and Archaeological Resource Survey for Mississippi Canyon

Block 816 on behalf of LLOG Exploration Offshore, Inc. The purpose of the survey was to evaluate geologic conditions and insp ect for potential hazards or constraints to lease development. T he report was submitted to Minerals Management Service (BOEMRE) under separate cover on November 9, 2010

. Berger Geosciences, LLC
conducted a Shallow Hazards Assessment, Benthic Communities Evaluation, and Archaeological Resource Survey for MC 816

- A Amended Revised and MC 816

- D Amended on behalf of LLOG Exploration Offshore, Inc. The report was submitted to BOEM under separate cover on January 9, 2013.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 11 

## F. Shallow Hazards Assessment

Utili zing the 3D deep seismic exploration data a shallow hazards analysis was prepared for the proposed surface locations, evaluating seafloor and subsurface geologic and
manmade features and conditions, and is included as Attachment I

.



## G. High Resolution Seis mic Lines

LLOG provided exploration 3

- D seismic data for the evaluation of the proposed surface disturbance operations.



## H. Stratigraphic Column

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

.



## I. Time vs Depth Tables

LLOG has determined that there is existing sufficient well control data for the target areas proposed in this plan; therefore, tables providing seismic time versus depth for the proposed we ll locations are not required.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 12 

# Geological Description

Attachment E (Proprietary Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 13 

# Structure Maps

Attachment F (Proprietary Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 14 

# Deep Seismic Lines

Attachment G (Proprietary Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 15 

# Cross Section Maps

Attachment H (Proprietary Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 16 

# Shallow Hazards Assessment

Attachment I
(Public Information)36499 Perkins Road

Prairieville

, Louisiana 70769 Telephone: 225.673.2163

Fax: 225.744.3116

www.teslaoffshore.com

January 2 , 2013 Job #12

- 286

- 31

Bureau of Ocean Energy Management (MS 5230) Gulf of Mexico OCS Region

1201 Elmwood Park Blvd. New Orleans, LA 70123

- 2394

RE: LLOG Exploration Offshore, L

. L

. C

. Proposed OCS

- G 33178 Well ‘A ’

- Amen ded

Bl ock 816

, Mississippi Canyon Area Archaeological Assessment

Dear Staff:

LLOG Exploration Offshore, L

. L

. C

. (LLOG) proposes to drill the OCS

- G 33 178 Well ‘ A ’

from the followi ng surface location in Block 816

, Mississippi Canyon Area:

Datum:

NAD 27 Spheroid:

Clarke 1866 Projection:

UTM Zone:

16

. Central Meridian:

87° 00 ’ West

Latitude: 28° 10’ 05.377 ” N Longitude: 88° 47’ 25.257 ” W

X: 1, 063,721.71 Y: 10,226,209.40

FW L: 2,441.71’ FNL: 6,430.60 ’

This assessment addresses an anchor radius of 15,000

- feet with a 1,000

- foot buffer zone as indicated on the enclosed maps. Tesla Offshore, LLC surveyed all of Block 816, including survey coverage in Blocks 815, 817, 859, 860, 861, 77 1, 772, and 773, Mississippi Canyon Area, in April of 2010 along a 300

- meter grid. The resulting archaeological assessment report was submitted to LLOG under Tesla Job# 10

- 063

- 12.

This assessment utilizes data acquired in February and March, 2010 coverin g all of Block 772 and parts of 773, 771, 727, 7 28, and 729 for anchoring. Th at assessment was performed for a third party and submitted under Tesla Job #10

- 004

- 12. Sonar targets from this pre

- existing survey data are included in this assessment when

rel evant. LLOG operates lease OCS

- G 33178 and contracted Tesla Offshore, LLC to provide this archaeological analysis ( NTL No. 2005

- G07

) in accordance with the Bureau of Ocean Energy Management (BOEM) Gulf of Mexico OCS Region.

Water depth is approximately 5,5 37 feet surrounding the proposed drill site. Water depths increase from roughly northwest to southeast at the proposed well site.

Seafloor soils are reported to be silty clay and marine deposits (MMS 1983 Visual No. 3; MMS 1986 Visual No. 5).TESLA OFFSHORE

LL OG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘A’

- Amended Block 816, Mississippi Canyon Area Archaeological Assessment Page 2

Man

- made features located within the proposed anchor radius include: MC 815 P&A Well No. 1, located approximately 6, 750 feet SW; MC 772 P&A Well No. 5, located approximately 14, 730 feet NNW ; and several pipelines, the closest of which

is the Dominion 6” & 10” pipeline bundle (Segments 14924 & 14925) located approximately 1 3,640 ’ NNE of the proposed site.

Magnetic d

ata is not required for survey in these water depths per NTL 2005

- G07.

Sonar data recorded a total of seven (7) targets within the proposed anchor radius. Targets No. 3, 8, and 9 were identified as part of the April 2010 geophysical survey (Job #10

- 063

- 1 1) and targets No. 4, 7, 18, and 20 were identified as part of the February and March, 2010 survey (Job # 10

- 004

- 11). Of these, only Target No. 8 from April was interpreted as a possible feature of historical significance. This target

should be avoided b y a distance of 500’ during lease development activities. Target No. 8 is located approximately 9

, 6 4 0 feet NW of the proposed well site. Sonar target no. 8 is an irregularly shaped target that measures approximately 33’ x 13’ with approximately 4’ of rel ief above the surrounding seafloor. The remaining six (6) targets located within the proposed anchor radius were interpreted as probable debris or possible seafloor hazards. Target No. 3 is located approximately 1 3,5 00 feet SSW of the proposed well site. This target appears to be a rectangular shaped target that measures approximately 26’ x 10’ with approximately 11’ of measured relief. Target no. 3 is adjacent to an observed drag scar and possible anchor divot. Target No . 9 is located approximately 7,8 3 0 feet NW of the proposed well site between several observed fault scarps. Target no. 9 is a rectangular shaped target that measures approximately 28’ x 7’ with approximately 9’ of relief above the surrounding seafloor. Sonar targets 4, 7, 18, and 20 ar e interpreted as probable

hazards or debris

, were mapped from the February and March data , and are located within the northernmost portion of the proposed anchor radius approximately 13,900’ NW, 13,690’ NW, 14,200’ NE and 6,230’ NNE, respectively . Althoug h it is recommended that these targets be avoided by 200 feet as potential hazards, these targets likely represent modern debris or natural features, and are not considered archaeologically significant. Sonar data also recorded numerous fault scarps and

s everal areas of highly reflective seafloor within the survey grid. Sonar data also recorded several isolated point source or linear reflectors within the survey grid, which typically correlate with small pieces of modern debris such as barrels and steel

d rums.

Supplemental Subbottom Data showed penetration of approximately 90 feet of parallel bedded, moderately reflecting sediments at the proposed well site. There is no potential for prehistoric sites in this portion of Mississippi Canyon Area, and no

ev idence of wrecks or other cultural debris were observed on the subbottom data. The shallow hazards analysis for the site and surrounding anchor radius will be performed by Berger Geosciences, LLC based on processed 3

- D data.TESLA OFFSHORE

LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘A’

- Amended Block 816, Mississippi Canyon Area Archaeological Assessment Page 3

No evidence of intact shipwreck sites was observed within the survey grid. No targets of potential archaeological significance were identif ied within 5,000 feet of the proposed well site. Sonar data recorded a total of seven (7) sonar targets within the proposed anchor radius, of which one was interpreted as an unknown feature that could represent a potential cultural resource.

LLOG Explo ration Offshore, L.L.C. and subcontractors will apply the safest and best available technologies during drilling operations and installation of future platforms. In compliance with 30 CFR 250.194(c), 30 CFR 250.1010(c), and NTL 2005

- G07, if

materials are observed during operations that could indicate the presence of a shipwreck, shipwreck site, or other potentially significant archaeological resource, operations will cease and the Regional Supervisor, Leasing and Environment with the

BOEM/BSEE will be noti fied within 48 hours of discovery.

Sincerely,

Erin Voisin Hazards Analyst /Archaeologist

Revision (1 /2/13 ). Previous Revisions (8/29/11) : Origina l assessment prepared on

5/26/ 10. Revision included revised well location, revi sed text, updated agency name.36499 Perkins Road

Prairieville

, Louisiana 70769

Tele phone: 225.673.2163

Fax: 225.744.3116

www.teslaoffshore.com

January 2, 2013 Job #12

- 286

- 31

Bureau of Ocean Energy Management (MS 5230) Gulf of Mexico OCS Region

1201 Elmwood Park Blvd. New Orleans, LA 70123

- 2394

RE: LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘B ’

Bl o ck 816

, Mississippi Canyon Area Archaeological Assessment

Dear Staff:

LLOG Exploration Offshore, L

. L

. C

. (LLOG) proposes to drill the OCS

- G 33 178 Well ‘ B ’

from the followi ng surface location in Block 816

, Mississippi Canyon Area:

Datum:

NAD 27 Sphe roid:

Clarke 1866 Projection:

UTM Zone:

16 Central Meridian:

87° 00 ’ West

Latitude: 28° 10’ 17.550 ” N Longitude: 88° 4 6 ’ 03.246 ” W

X: 1,071,079 .00 Y: 10 ,227,331 .00

FE L: 6,041’ FNL: 5, 309 ’

This assessment addresses an anchor radius of 15,000

- feet with a 1,000

- foot buffer zone as indicated on the enclosed maps. Tesla Offshore, LLC surveyed all of Block 816, including survey coverage in Blocks 815, 817, 859, 860, 861, 771, 772, and 77 3, Mississippi Canyon Area, in April of 2010 along a 300

- meter grid. The resulting archaeological assessment report was submitted to LLOG under Tesla Job# 10

- 063

- 12.

This well assessment utilizes data acquired in February and March, 2010 covering all of Block 772 and parts of 773, 771, 727, 728, and 729 for anchoring. Th at survey was performed for a third party and submitted under Tesla Job #10

- 004

- 12. A gap in this survey coverage is present in Block 773 due to the presence of the Devil’s Tower Spar

fa cility. BOEM approval was granted by Dr. Jack Irion to exclude the area directly surrounding the facility from archaeological survey coverage. Sonar targets from this

pre

- existing survey data are included in this assessment when relevant. Sonar targets from this pre

- existing survey data are included in this assessment when relevant. LLOG operates lease OCS

- G 33178 and contracted Tesla Offshore, LLC to provide this archaeological analysis ( NTL No. 2005

- G07

) in accordance with the Bureau of Ocean Energy M anagement (BOEM) Gulf of Mexico OCS Region.

Water depth is approximately 5, 675 feet surrounding the proposed drill site. Water depths generally increase from west to east across the proposed well site, with theTESLA OFFSHORE

LLOG Exploration Offshore, L.L.C. Prop osed OCS

- G 33178 Well ‘B’ Location Block 816, Mississippi Canyon Area Archaeological Assessment Page 2

exception of a minor seafloor undulation at the proposed site.

Seafloor soils are reported to be silty clay and marine deposits (MMS 1983 Visual

No. 3; MMS 1986 Visual No. 5).

Man

- made features located within the proposed anchor radius include P&A Well No. 1 located approximately 13,800’ W SW of the proposed surface location, as well as several pipelines in the northeast portion of the proposed radi us, the closest of which is the Dominion 6” & 10” pipeline bundle (Segments 14924 & 14925), which is located approximately 10,175’ NNE of the proposed site.

Magnetic data is not required for survey in these water depths per NTL 2005

- G07.

Sonar data rec orded a total of six ( 6 ) targets within the proposed anchor radius. Target No. 4 is located approximately 13,250 feet E SE of the proposed well site. Sonar target no. 4 is an irregularly shaped target measuring approximately 13’ x 5’

with 10’ of measured relief above the seafloor. Target no. 5 is located approximately 14,950 feet E SE of the proposed well site. Target no. 5 is a linear object measuring approximately 50’ x 3’ with 2’ of measured relief above the surrounding seafloor. Both sonar targets no. 4 and no. 5 were interpreted as possible features of historical significance and should be avoided by a distance of 500’ during lease development

activities. Four of the recorded targets located within the proposed anchor radius were interpreted as proba ble debris or possible seafloor hazards. Target No. 7 is located approximately 14,225 feet E of the proposed well site between several observed fault scarps. This target is an irregularly shaped target that measures approximately 19’ x 8’ with approximat ely 3’ of relief above the surrounding seafloor. Target No. 9 is located approximately 12,800 feet NW of the proposed well site between several observed fault scarps. Target no. 9 is a rectangular shaped target that measures approximately 28’ x 7’ with a pproximately 9’ of relief above the surrounding seafloor. Targets no. 18 and 20 are interpreted as probable hazards or debris, were mapped from the pre

- existing data and are located within the northernmost portion of the proposed anchor radius approximate ly 10,625’ NNE and 7,400’ NW from the proposed site . Although it is recommended that these targets be avoided by 200 feet as potential hazards, these targets likely represent modern debris or natural features, and are not considered archaeologically signi ficant. Sonar data also recorded numerous fault scarps and several areas of highly reflective seafloor within the survey grid. Sonar data also recorded several isolated point source or linear reflectors within the survey grid, which typically correlate w ith small pieces of modern debris such as barrels and steel drums.

Supplemental Subbottom Data showed penetration of approximately 90 feet of parallel bedded, moderately to strongly reflective sediments at the proposed well site. There is no potential fo r prehistoric sites in this portion of Mississippi CanyonTESLA OFFSHORE

LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘B’ Location Block 816, Mississippi Canyon Area Archaeological Assessment Page 3

Area , and no evidence of wrecks or other cultural deb ris were observed on the subbottom data. The shallow hazards analysis for the site and surrounding anchor radius will be performed by Berger Geosciences, LLC based on processed 3

- D data.

No evidence of intact vessels or obvious shipwreck sites was obse rved within the survey grid. No targets of potential archaeological significance were identified within 5,000 feet of the proposed well site. Sonar data recorded a total of six (6) sonar targets within the proposed anchor radius, of which two (2) are int erpreted as potential cultural resources.

LLOG Exploration Offshore, L.L.C. and subcontractors will apply the safest and best available technologies during drilling operations and installation of future platforms. In compliance with 30 CFR 250.194(c) , 30 CFR 250.1010(c), and NTL 2005

- G07, if materials are observed during operations that could indicate the presence of a shipwreck, shipwreck site, or other potentially significant archaeological resource, operations will cease and the Regional Supervisor , Leasing and Environment with the

BOEM/BSEE will be notified within 48 hours of discovery.

Sincerely,

Erin Voisin Amanda Evans, MA

, RPA Hazards Analyst /Archaeologist Marine Archaeologist

Revision (1/2/1 3 ). Previous Revisions (8/29/11): Origina l assessment prepared on

5/26/ 10. Revision included revised well location, revised text, updated agency name.36499 Perkins Road

Prairieville

, Louisiana 70769 Telephone: 225.673.2163

Fax: 225.744.3116

www.teslaoffshore.com

January 2, 2013 Job #12

- 286

- 31

Bureau of Ocean Energy Management (MS 5230) Gulf of Mexico OCS Region

1201 Elmwood Park Blvd. New Orleans, LA 70123

- 2394

RE: LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘C ’

Bl oc k 816

, Mississippi Canyon Area Archaeological Assessment

Dear Staff:

LLOG Exploration Offshore, L

. L

. C

. (LLOG) proposes to drill the OCS

- G 33 178 Well ‘ C ’

from the followi ng surface location in Block 816

, Mississippi Canyon Area:

Datum:

NAD 27 Spher oid:

Clarke 1866 Projection:

UTM Zone:

16 Central Meridian:

87° 00 ’ West

Latitude: 28° 10’ 29.433 ” N Longitude: 88° 4 5 ’ 23.323 ” W

X: 1 ,074,669 .00 Y: 10, 228,479 .00

FE L: 2,4 51 ’ FNL: 4,1 61 ’

This assessment addresses an anchor radius of 15,000

- feet with a 1,000

- foot buffer zone as indicated on the enclosed maps. Tesla Offshore, LLC surveyed all of Block 816, including survey coverage in Blocks 815, 817, 859, 860, 861, 771, 772, and 773

, Mississippi Canyon Area, in April of 2010 along a 300

- meter grid. The resulting archaeological assessment report was submitted to LLOG under Tesla Job# 10

- 063

- 12.

This well assessment utilizes data acquired in February and March, 2010 covering all of

B lock 772 and parts of 773, 771, 727, 728, and 729 for anchoring. Th at survey was performed for a third party and submitted under Tesla Job #10

- 004

- 12. A gap in this survey coverage is present in Block 773 due to the presence of the Devil’s Tower Spar

fac ility. BOEM approval was granted by Dr. Jack Irion to exclude the area directly surrounding the facility from archaeological survey coverage. Sonar targets from this

pre

- existing survey data are included in this assessment when relevant. Sonar targets

f rom this pre

- existing survey data are included in this assessment when relevant. LLOG operates lease OCS

- G 33178 and contracted Tesla Offshore, LLC to provide this archaeological analysis ( NTL No. 2005

- G07

) in accordance with the Bureau of Ocean Energy Ma nagement (BOEM) Gulf of Mexico OCS Region.

Water depth is approximately 5, 655 feet surrounding the proposed drill site. Water depths generally increase from west to east across the proposed well site

.TESLA OFFSHORE

LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘C’ Location Block 816, Mississippi Canyon Area Archaeological Assessment Page 2

Seafloor soils are reported to be silty clay and marine deposits (MMS 1983 Visual No. 3; MMS 1986 Visual No. 5).

Man

- made features located within the propose d anchor radius include several pipeline s in the northeast portion of the proposed radius, the closest of which is the Dominion 6” & 10” pipeline bundle (Segments 14924 & 14925) , which is located approximately 7

, 950 feet NE of the proposed site

.

Magnetic data is not required for survey in these water depths per NTL 2005

- G07.

Sonar data recorded a total of seven (7) targets within the proposed anchor radius. Target No. 4 is located approximately 10,425 feet SE of the proposed well site. Sonar target no. 4 is an irregularly shaped target measuring approximately 13’ x 5’ with 10’ of measured relief above the seafloor. Target no. 5 is located approximately 11,875 feet SE of the proposed well site, and target no. 6 is located approximately 11,950 feet SE of the proposed well site. Targets no. 5 and 6 are both linear objects measuring approximately 50’ x 3’ with 2’ and 6’ of measured relief above the surrounding seafloor. Target no. 10 is located approximately 14,200 feet NE of the proposed well site. Sonar target no. 10 is an irregularly shaped feature that measures approximately 200’ x 105’ with no observed relief above the surrounding seafloor. This target appears on the sonar data as an area of possible disturbed seafloor, consisting of numerous parallel , linear and point source reflectors clustered together in a dense configuration. It is not associated with any observed areas of scour or measureable relief. Sonar targets no. 4, 5, 6, and 10 were interpreted as possible features of historical significa nce and should be avoided by a distance of 500’ during lease development activities. One additional target is located within the proposed anchor radius, but was interpreted as probable debris or a possible seafloor hazard. Target No. 7 is located approxi mately 10,625 feet E of the proposed well site between several observed fault scarps. This target is an irregularly shaped target that measures approximately 19’ x 8’ with approximately 3’ of relief above the surrounding seafloor. Targets no. 18 and 20 a re interpreted as probable hazards or debris, were mapped from the pre

- existing data and are located within the northernmost portio n of the proposed anchor radius approximately 9,925’ NW and 9,900’ NW of the proposed site . Although it is recommended that these targets be avoided by 200 feet as potential hazards, these targets likely represent modern debris or natural features, and are not considered archaeologically significant. Sonar data also recorded numerous fault scarps and several areas of highly re flective seafloor within the survey grid. Sonar data also recorded several isolated point source or linear reflectors within the survey grid, which typically correlate with small pieces of modern debris such as barrels and steel drums.

Supplemental Subbo ttom Data showed penetration of approximately 9 0 feet of parallel bedded, moderately reflective sediments at the proposed well site.TESLA OFFSHORE

LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘C’ Location Block 816, Mississippi Canyon Area Archaeologi cal Assessment Page 3

There is no potential for prehistoric sites in this portion of Mississippi Canyon Area,

and no evidence of wrecks or other cultural debris were observed on the subbottom data. The shallow hazards analysis for the site and surroundin g anchor radius will be performed by Berger Geosciences, LLC based on processed 3

- D data.

No evidence of intact vessels or obvious shipwreck sites was observed within the survey grid. No targets of potential archaeological significance were identified within 5,000 feet of the proposed well site. Sonar data recorded a total of seven (7) sonar targets within the proposed anchor radius, of which four (4) are interpreted as potential cultural

resources.

LLOG Exploration Offshore, L.L.C. and subcontrac tors will apply the safest and best available technologies during drilling operations and installation of future platforms. In compliance with 30 CFR 250.194(c), 30 CFR 250.1010(c), and NTL 2005

- G07, if materials are observed during operations that could indicate the presence of a shipwreck, shipwreck site, or other potentially significant archaeological resource, operations will cease and the Regional Supervisor, Leasing and Environment with the

BOEM/BSEE will be notified within 48 hours of discovery.

Sincerely,

Erin Voisin Amanda Evans, MA, RPA Hazards Analyst /Archaeologist Marine Archaeologis t

Revision (1 /2/13 ). Previous Revisions (8/29/11): Origina l assessment prepared on

5/26/ 10. Revision included revised well location, revised text, updated agency name.36499 Perkins Road

Prairieville

, Louisiana 70769 Telephone: 225.673.2163

Fax: 225.744.3116

www.teslaoffshore.com

January 2 , 2013 Job #12

- 286

- 31

Bureau of Ocean Energy Management (MS 5230) Gulf of Mexico OCS Region

1201 Elmwood Park Blvd. New Orleans, LA 70123

- 2394

RE: LLOG Exploration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘D ’

- Amen ded

Bl ock 816

, Mississippi Canyon Area Archaeological Assessment

Dear Staff:

LLOG Exploration Offshore, L

. L

. C

. (LLOG) proposes to drill the OCS

- G 33 178 Well ‘ D ’

from the followi ng surface location in Block 816

, Mississippi Canyon Area:

Datum:

NAD 27 Spheroid:

Clarke 1866 Projection:

UTM Zone:

16 Central Meridian:

87° 00 ’ West

Latitude: 28° 10’ 19.294 ” N Longitude: 88° 47’ 10.311 ” W

X: 1,065,080.00 Y: 10,227

, 595

. 0 0

FW L: 3,800’ FNL: 5,045’

This assessment addresses an anchor radius of 15,000

- feet with a 1,000

- foot buffer zone as indicated on the enclosed maps. Tesla Offshore, LLC surveyed all of Block 816, including survey coverage in Blocks 815, 817, 859, 860, 861, 771, 772, and 773, Mississippi Canyon Area, in April of 2010 along a 300

- meter grid. The resulting archaeological assessment report was submitted to LLOG under Tesla Job# 10

- 063

- 12. A previous revised well assessment also utilize d data acquired in February and Ma rch, 2010 covering all of Block 772 and parts of 773, 771, 727, 728, and 729 for anchoring.

Th at assessment was performed for ENI Petroleum and LLOG and submitted under

Tesla Job #10

- 004

- 12. Sonar targets from this pre

- existing survey data are included i n this assessment when relevant. LLOG operates lease OCS

- G 33178 and contracted Tesla Offshore, LLC to provide this archaeological analysis ( NTL No. 2005

- G07

) in accordance with the Bureau of Ocean Energy Management (BOEM) Gulf of Mexico OCS Region.

Wa ter depth is approximately 5, 550 feet surrounding the proposed drill site. Water depths increase from roughly northwest to southeast at the proposed well site.

Seafloor soils are reported to be silty clay and marine deposits (MMS 1983 VisualTESLA OFFSHORE

LLOG Expl oration Offshore, L.L.C. Proposed OCS

- G 33178 Well ‘D’

- Amended Block 816, Mississippi Canyon Area Archaeological Assessment Page 2

No. 3; MMS 1986 Visual No. 5).

Man

- made features located within the proposed anchor radius include: MC 815

P&A Well No . 1, located approximately 8,67 5’ SW; MC 772 P&A Well No. 5, located approximately 1 3,470’ NN W; and several pipelines, the closest of which is the Dominion 6” & 10” pipeline bundle (Segments 14924 & 14925) located approximately
11,900 ’ NNE of the proposed site

.

Magnetic data is not required for survey in these water depths per NTL 2005

- G07.

Sonar data recorded a total of s ix ( 6 ) targets within the proposed anchor radius. Targets No. 8 and 9 were identified as part of the April 2010 geophysical survey ( Job

#10

- 063

- 11) and targets No. 4, 7, 18, and 20 were identified as part of the February and March, 2010 survey (Job # 10

- 004

- 11). Of these, only Target No. 8 from April was interpreted as a possible feature of historical significance. This target should be avoided by a distance of 500’ during lease development activities. Target No. 8 is located approximately 10,140 feet NW of the proposed well site. Sonar target no. 8 is an irregularly shaped target that measures approximately 33’ x 13’ with approxima tely 4’ of relief above the surround ing seafloor. The remaining five ( 5 ) targets located within the proposed anchor radius were interpreted as probable debris or possible seafloor hazards. Target No . 9 is located approximately 7,6 3 0 feet NW of the propos ed well site between several observed fault scarps. Target no. 9 is a rectangular shaped target that measures approximately 28’ x 7’ with approximately 9’ of relief above the surrounding seafloor. Targets no. 4, 7, 18, and 20 are interpreted as probable hazards or debris, were mapped from the February and March data and are located within the northernmost portion of the proposed anchor

radius approximately 13,820’ NW, 13,280’ NW, 12,290’ NE, and 4,610’ N of the proposed site, respectively . Although it is recommended that these targets be avoided by 200 feet as potential hazards, these targets likely represent modern debris or natural features, and are not considered archaeologically significant. Sonar data also recorded numerous fault scarps and several areas of highly reflective seafloor within the survey grid. Sonar data also recorded several isolated point source or linear reflectors within the survey grid, which typically correlate with small pieces of modern debris such as barrels and steel drums.

Supplemental Subbottom Data showed penetration of approximately 90 feet of parallel bedded, moderately reflecting sediments at the proposed well site. There is no potential for prehistoric sites in this portion of Mississippi Canyon Area, and no

evidence of wrecks or other cultural debris were observed on the subbottom data. The shallow hazards analysis for the site and surrounding anchor radius will be performed by Berger Geosciences, LLC based on processed 3

- D data.TESLA OFFSHORE

LLOG Exploration Offshore, L.L.C

. Proposed OCS

- G 33178 Well ‘D’

- Amended Block 816, Mississippi Canyon Area Archaeological Assessment Page 3

No evidence of intact shipwreck sites was observed within the survey grid. No targets of potential archaeological significance were identified w ithin 5,000 feet of the proposed well site. Sonar data recorded a total of seven (7) sonar targets within the proposed anchor radius, of which one was interpreted as an unknown feature that could represent a potential cultural resource.

LLOG Exploratio n Offshore, L.L.C. and subcontractors will apply the safest and best available technologies during drilling operations and installation of future platforms. In compliance with 30 CFR 250.194(c), 30 CFR 250.1010(c), and NTL 2005

- G07, if

materials are obser ved during operations that could indicate the presence of a shipwreck, shipwreck site, or other potentially significant archaeological resource, operations will cease and the Regional Supervisor, Leasing and Environment with the

BOEM/BSEE will be notified within 48 hours of discovery.

Sincerely,

Erin Voisin Hazards Analyst /Archaeologist

Revision (1/2/13 ). Previous Revisions (8/29/11): Origina l assessment prepared on

5/26/ 10. Revision included revised well location, revised text, updated agency name.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 17 

# Stratigraphic Column

Attachment J (Proprietary Information)Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 18 

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

A. Concentration

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



## B. Classification

In accordance with 30 CFR 250.490c and NTL 2007

- G11, LLOG requests that the proposed location be classified H2S absent. The basis for this determination is the

ev aluation of Newfield’s Lease OCS

- G

- 19996, Eni Petroleum #A

- 2 Well in MC 773

, 15,625MD/14,665TVD

.



## C. H2S Contingency Plan

Not applicable for the proposed operations.



## D. Modeling Report

Not appli cable to the proposed operations.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 20 

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

Mississippi Canyon Block 816 is located in Grid 16 which does not require a R OV

survey.

H. 

## Threatened or Endan gered Species, Critical Habitat, and Marine

Mammal Information

.

Proposed activities in M ississippi Canyon Block 816 is not located in the presence of federally listed threatened or endangered species and critical habitat designated under

the ESA and marin e mammal protected under the MMPA. See Attachment K for a list

of the NOAA Species k nown in the Gulf of Mexico.

I

. 

## Archaeological Report

Berger Geosciences, LLC conducted a Shallow Hazards Assessment, Benthic
Communities Evaluation, and Archaeol ogical Resource Survey for Mississippi Canyon Block 816 on behalf of LLOG Exploration Offshore, Inc. The purpose of the survey was to evaluate geologic conditions and inspect for potential hazards or constraints to lease development. The report was submi tted to Minerals Management Service (BOEMRE) under separate cover on November 9, 2010. Berger Geosciences, LLC
conducted a Shallow Hazards Assessment, Benthic Communities Evaluation, and Archaeological Resource Survey for MC 816

- A Amended Revised and MC 816

- D Amended on behalf of LLOG Exploration Offshore, Inc. The report was submitted to BOEM under separate cover on January 9, 2013.



## J. Air and Water Quality Information

Not applicable to proposed operations.



## K. Socioeconomic Information

No t applicable to proposed operations.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 21 

# NOAA Species Known in GOM

Attachment K
(Public Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 22 

## APPENDIX F

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

A. Projected Generated Wastes

See the follo wing tables:

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

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



## B. Modeling

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

Permit.please specify if the amount reported is a total or per well amountMC 816Projected generated waste Projected ocean dischargesType of Waste Composition Projected Amount Discharge rate Discharge Method Answer yes or noWill drilling occur ? If yes, fill in the muds and cuttings.EXAMPLE: Cuttings wetted with synthetic based fluidCuttings generated while usingsynthetic based drilling fluid. X bbl/well X bbl/day/well discharge overboard NoWater-based drilling fluidWater based mud additives,barite and gel used for WBM74,945 bbls/well8,488 bbls/day/well Discharge overboard NoCuttings wetted with water-based fluidCuttings generated while usingwater based drilling fluid. 3,523 bbls/well399 bbls/day/wellDischarge overboard NoCuttings wetted with synthetic-based fluidCuttings generated while usingsynthetic based drilling fluid. 865 bbls/well 091 bbls/day/well Discharge overboard NoWill humans be there? If yes, expect conventional wasteEXAMPLE: Sanitary waste waterSanitary waste from livingquarters X bbl/well X bbl/hr/wellchlorinate and dischargeoverboard NoDomestic wasteMisc waste for living quarters 23,568 bbls/well3.1 bbls/hr/wellDischarge overboard (no freeoil)NoSanitary wasteProcessed sanitary waste fromliving quarters 15,712 bbls/well2.1 bbls/hr/wellChlorinate and dischargeoverboard NoIs there a deck? If yes, there will be Deck DrainageDeck DrainageAccumulated drainage due torainfall 0 to 47,261 bbls/well 0 to 167 bbls/hr/wellTest for oil and grease anddischarge overboardNoWill you conduct well treatment, completion, or workover?Well treatment fluidsNPDES approved treatmentfluid used for well operations 100 bbls/well20 bbls/hr/wellTest for oil and grease anddischarge overboard.NoWell completion fluidsClear brines used forcompletion operations 500 bbls/well100 bbls/hr/wellTest for oil and grease anddischarge overboard. Thisexcludes clear brinescontaining ZincNoWorkover fluidsN/AN/ANA NANoTABLE 1. WASTES YOU WILL GENERATE, TREAT AND DOWNHOLE DISPOSE ORDownholeDisposalDISPOSE OR DISCHARGE IN THE GOMMiscellaneous discharges. If yes, only fill in those associated with your activity.Desalinization unit dischargeN/A N/A N/A N/A N/ABlowout prevent fluidN/AN/AN/AN/AN/ABallast waterUncontaminated seawater usedfor ballast control 0 to 100,000 bbls/well16,350 bbls/hr/well Discharge overboardNoBilge waterN/A N/A N/A N/A N/AExcess cement at seafloorExcess cement slurry andmixwater used for cementingoperation - NPDES allowed 300 bbls/well360 bbls/hr/well Discharge at mudlineNoFire waterUncontaminated seawater usedfor fire control system 0 to 10,000 bbls/well16,350 bbls/hr/well Discharge overboardNoCooling waterN/A N/A N/A N/A N/AWill you produce hydrocarbons? If yes fill in for produced water.Produced waterNA NANA NA N/AWill you be covered by an individual or general NPDES permit ?GMG 290180comply with the requirements of the NPDES permit.NOTE: If you will not have a type of waste, enter NA in the rowPlease specify whatever the amount reported is a total or per wellMC 816Projectedgenerated wasteSolidandLiquidWastsesTransportationType of Waste Composition Transport Method Name/Location of Facility Amount Disposal MethodNewport EnvironmentalServices Inc., Ingleside, TX X bbl/well RecycledOil-based drilling fluid or mudN/ANAN/A NA NASynthetic-based drilling fluid or mudInternal olifin, ester nbasedmudBarged in 25 bbls cutting boxesand / or liquid mud tanks forsupply vesselsNewpark Transfer Station,Fourchon, LA 6750 bbls / well RecycledCuttings wetted with Water-based fluidN/ANAN/A NA NACuttings wetted with Synthetic-based fluidN/ANAN/A NA NACuttings wetted with oil-based fluidsN/ANAN/A NA NAWill you produce hydrocarbons? If yes fill in for produced sand.Produced sandEXAMPLE: trash and debris (recylables) Plastic, paper, aluminum barged in a storage bin ARC, New Iberia, LA X lb/well RecycledTrash and debrisPlastic, paper, aluminum Barged in a storage binBlanchard Landfill, GoldenMeadows, LA 4000 lbs / well RecycledUsed oilSpent oil from machineryBarged in USCG approvedtransfer tote tanks. L&L Services, Fourchon, LA 200 bbls / well RecycledWash waterWash water w/ SBMresidue and surfactantsBarged in 25 bbls cutting boxesand / or liquid mud tanks forsupply vesselsNewpark Transfer Station,Fourchon, LA 2000 bbls / wellApproved disposal wellinjection or land farmChemical product wastesSpent treatment and / ordamaged chemicals used inoperationsBarged in 25 bbls cutting boxesand / or cutting boxes L&L Services, Fourchon, LA 10 bbls / well RecycledNOTE: If you will not have a type of waste, enter NA in the rowTABLE 2. WASTES YOU WILL TRANSPORT AND /OR DISPOSE OF ONSHOREWill you have additional wastes that are not permitted for discharge? IfWaste DisposalMississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 23 

## 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 (Form MMS

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

submersible drilling unit, with related support vessels and construction barge

information.

As evidenced by Attachment L

, the worksheets were completed based on the proposed flaring and bur ning 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 calculated using the following formulas: CT = 3400D(2/3 ) for CO, and CT = 33.3D for the other air pollutants (where D = distance to shore in miles)? X

Does your emission calculations include any emission reduction measures or modified

emission factors? X

Are your proposed exploration activities located eas t 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 bur n 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 Nondefault Emissions Factors

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

.



## D. Non

- Exempt Activities

The proposed activities are within the exemption amount as provided in Attachment L

.



## E. Modeling Report

This section of the Plan is not applicable to the proposed operat ions.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 24 

# Air Quality Emissions Report

Attachment L
(Public Information)Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 25

COMPANY LLOG Exploration Offshore, L.L.C.

AREA Mississippi Canyon

BLOCK 816

LEASE OCS

- G

- 33178

PLATFORM N/A

WELL A, B, C and D

COMPANY

CONTACT Kathy Gowland

TELEPHONE NO. 985

- 801

- 4300

REMARKS



### DP Semisubmersible Rig

Air Pollutant Plan Emission

Amounts*
(tons) Calculated Exemption

Amounts**
(tons) Calculated Complex Total

Emission

Amounts***
(tons)

Carbon monoxide (CO) 3 27.60 49172.32 N/A
Particulate matter (PM) 43.68 1831.50 N/A
Sulphur dioxide (SOx) 200.38 1831.50 N/A
Nitrogen oxides (NOx) 1501.49 1831.50 N/A
Volatile organic compounds (VOC) 45.04 1831.50 N/A

*For activities proposed in your EP, list the projected emissions calculated from the worksheet. **List the exemption amounts in your proposed activities calculated using the formulas in 30 CFR 250.303(d). ***List the complex total emissions associated with your p ro posed activities calculated from the worksheets.



### Semisubmersible Rig

Air Pollutant Plan Emission

Amounts*
(tons) Calculated Exemption

Amounts**
(tons) Calculated Complex Total

Emission

Amounts***
(tons)

Carbon monoxide (CO) 1 51.26 49172.32 N/A
Particulate matter (PM) 2 0.17 1831.50 N/A
Sulphur dioxide (SOx) 9 2.52 1831.50 N/A
Nitrogen oxides (NOx) 6 93.26 1831.50 N/A
Volatile organic compounds (VOC) 2 0.80 1831.50 N/A

*For activities proposed in your EP, list the projected emissions calculated from the worksheet. **List the exemption amounts in your proposed activities calculated using the formulas in 30 CFR 250.303(d). ***List the complex total emissions associated with your p ro posed activities calculated from the worksheets.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 27 

### D. 

## Worst

- Case Scenario Information

Category Regional OSRP Revised EP
Type of Activity Exploratory MODU Exploratory MODU
Facility Surface Location Mississippi Canyon Block 547 Mississippi Canyon Block 816
Facility Description Well Location Well No. SS002
(Location B) Well Loc ation Well No. 001
(Location A)

Distance to Nearest Shoreline
(Miles) 38 miles 55 miles

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

Potential 24 Hour Volume
(bbls) 225,144 bbls 86,772 bbls

Type of Liquid Hydrocarbon Crude Oil Crude Oil
API Gravity 3 8 .4 o 3 6.8 o



### Since LL OG Exploration Offshore, L.L.C. (LLOG) has the capability to respond to the appropriate worst

- case spill scenario included in its regional OSRP Biennial update

a pproved on August 8, 2012, and latest modification submitted on January 29, 2013, and approved February 25, 2013, and since the worst case discharge determined in our Initial Exploration Plan for MC 816 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 res pond, to the maximum extent practicable, to a worst

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

dis charge previously submitted for MC 547.

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 Oct ober 6, 2011.

The required proprietary data outlined in NTL 2010

- N06 is being submitted to BOEM

with in the Confidential Copy of this Initial Exploration Plan.

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 86,772 barrels of crud e oil with an API gravity of 36.8°.

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 an 11% probability of impact to the shorelines 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 Exploration Offshore, L.L.C. will make every effort to respond to the Worst Case Discharge as effectively as practicable. A desc ription of the response eq uipment under contract

to contain and recover the Wors t 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 16% or approximately 13,884 barrels of crude oil would be evaporated/dispersed w ithin 24 hours, with approximately 72,888 barrels remaining.

Spill Response MC 816, Well Location D Barrels of Oil

WCD Volume 86,772

Less 16% natural evaporation/dispersion 13,884

Remaining volume 72,888



### Figure 2 outlines equipment, personnel, materials and support vessels as well as temporary storage equipment available to respond to a spill of approximately 72,888 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 Exploration Offshore, L.L.C.’s Oil Spill Response Plan includes alternative response technologies 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 utilized, 8 sorties (9,600 gallons) from two of the DC-3 aircrafts and 4 sorties (8,000 gallons)

### from the Basler aircraft would provide a dail y dispersant capability of 7,540 barrels. If the conditions are favorable for in-situ burning, the proper approvals have been obtained and the proper planning is in place, in-situ burning of oil may be attempted. Slick containment boom would be immediately called 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 skimming capac ity of 177,486 barrels. Temporar y storage associated with skimming equipment equals 113,691 barrels. If a dditional storage is needed, three 20,000 barrel storage barges and a 23,000 barrel storage barge may be mobilized and centrally located to provide temporary storage allowing the skimmers to stay in the area of operations as much as possible. Safety is first priority. Air monito ring will be accomplished and operations deemed safe prior 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 69,126 barrels. Temporary storage asso ciated with skimming equipm ent equals 1,288 barrels. If additional storage is needed, a 25,000 barrel stor age barge and two 23,000 ba rrel 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. Onshore response may include the deployment
of shoreline boom on beach areas, or protection and sorbent boom on vegetated areas. Master Service Agreements with AMPOL and OMI Envir onmental will ensure acc ess to 147,000 feet of 18” shoreline protection boom. Figure 2 outlines individual times needed for procurement, load out, travel time to the site and deployment. Stra tegies would be based upon surveillance and real time trajectories that depict areas of potentia l impact given actual sea and weather conditions. The State of Louisiana Initial Oil Spill Respon se Plan for Plaquemines Parish and Unified

Command would be consulted to ensure that environmental and special economic resources would be correctly identified and prioritized to ensure optimal protection. Shoreline protection strategies depict the protection response modes applicable for oil spill clean-up operations. The

State of Louisiana Initial O il Spill Response Plan provides detailed shoreline protection strategies for this area, and it describes necessary action to k eep the oil spill from entering
Louisiana’s coastal wetlands, base d 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 pe rsonnel have the option to modify the deployment and operation of equipment allowing a more effective response to site-specific circumstances. LLOG Exploration Offshore, L.L.C.’s contract Spill Management Team holds a copy of the State of

Louisiana Initial Oil Spill Response Plan.

Based on the anticipated worst case discharge sc enario, LLOG Exploration Offshore, L.L.C. can be onsite with contracted oil spill recovery equi pment with adequate response capacity to contain and recover surface hydrocarbons, and prevent land impact, to the maximum extent practicable, within an estimated 43 hours (based on the equi pment’s Effective 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 Exploration Offshore, L.L.C. will take acti on to provide a safe, aggressive response to contain 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 sensitive 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) esta blished 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 esta blished for Source Control a nd 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 Exploration Offshore, L.L.C.’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 Exploration Offshore, L.L.C.’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. 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.

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, however, 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 Exploration Offshore, L.L.C. ’s WCD and information in the BSEE Oil Spill Risk Analysis Model (OSRAM) for th e Central and Western Gulf of Mexico available on the BSEE website using 30 day im pact. The results are tabulated below.

Area/Block OCS-G Launch

Area Land Segment and/or

Resource Conditional Probability (%) within 30 days

Exploratory Drilling

MC 816,

Well Location D

55 miles from shore G33178 C59 Cameron, LA
Vermilion, LA
Terrebonne, LA
Lafourche, LA
Jefferson, LA Plaquemines, LA

St. Bernard, LA
Walton, FL

Bay, FL 1

1

2

2

1

11

2

1

1WCD Scenario– BASED ON WELL BLOWOUT DURING DRILLING OPERATIONS(55 miles from shore)72,888 bbls of crude oil (Volume considering natural weathering)API Gravity 36.8°FIGURE 2 – Equipment ResponseTime to MC 816, Well Location DDispersants/SurveillanceDispersant/SurveillanceDispersantCapacity (gal)StorageCapacityPersons Req.FromHrs toProcureHrs toLoadoutTravel tositeTotal HrsCGABasler 67T 2000 NA 2 Houma 1 1 0.8 2.8ASIDC 3 1200 NA 2 Houma 1 1 1 3DC 3 1200 NA 2 Houma 1 1 1 3Aero Commander NA NA 2 Houma 1 1 0.8 2.8Offshore ResponseOffshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsCGAHOSS Barge 43000 4000 3 Tugs 5 Harvey 7 0 5 8.1 1 21.146’ FRV 5000 65 NA 4 Venice 1 0 1 2.6 0 4.6CGA-300 Boom Barge42” Auto Boom (25000’)NA NA1 Tug50 Crew4 (Barge)2 (Per Crew)Leeville 4 0 6 15.7 1.5 27.2Recovered Oil Storage NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsEnterprise Marine Services LLC (available through contract with CGA)CTCo 2604 NA 20000 1 Tug 6 Amelia 4 12 4 21.88 1 42.88CTCo 2605 NA 20000 1 Tug 6 Amelia 4 12 4 21.88 1 42.88CTCo 2606 NA 20000 1 Tug 6 Amelia 4 12 4 21.88 1 42.88CTCo 2609 NA 23000 1 Tug 6 Amelia 4 12 4 21.88 1 42.88Offshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsMSRCLouisiana ResponderLFF 100 Brush + OSRV2,640’ 44” Sea Sentry II Boom5,280’ 67” LAMOR18086 4000 NA 14 Fort Jackson 2 0 1 4 1 8MSRC 452 Offshore Barge1 Crucial Disk 88/301,980’ 44” Sea Sentry II Boom660 ‘ 67” LAMOR11122 45000 3 Tugs 6 Fort Jackson 2 0 2 14.3 1 19.3Mississippi ResponderTransrec 350 + OSRV5,280’ 44” Sea Sentry II Boom2,640’ 67” LAMOR10567 4000 NA 14 Pascagoula 2 0 1 5.8 1 9.8MSRC 402 Offshore Barge2 Crucial Disk 88/30660’ 44” Sea Sentry II Boom1,980‘ 67” LAMOR22244 40300 3 Tugs 6 Pascagoula 2 0 2 20.7 1 25.7Deep Blue ResponderLFF 100 Brush + OSRV6,600’ 44” Sea Sentry II Boom660’ 67” LAMOR18086 4000 NA 14 Fourchon 2 0 1 4.4 1 8.4PSV – HOS Centerline1 Crucial Disk 88/301,320’ EFC (cont inflate)11122 10626 NA 14 Fourchon 12 12 1 9.2 1 35..2Staging Area: VeniceOffshore Equipment WithStagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toSiteHrs toDeployTotalHrsCGAFRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Galveston 1 2 8 5.4 1 17.4FRU (1) + 100 bbl Tank (1) 4251 100 1 Utility 6 Harvey 1 2 1.75 5.4 1 11.2FRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Ingleside 1 2 11 5.4 1 20.4FRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Lake Charles 1 2 5.5 5.4 1 14.9FRU (2) + 100 bbl Tank (2) 8502 400 2 Utility 12 Leeville 1 2 3.5 5.4 1 12.9FRU (1) + 100 bbl Tank (2) 4251 200 1 Utility 6 Morgan City 1 2 3.25 5.4 1 12.7FRU (2) + 100 bbl Tank (4) 8502 400 2 Utility 12 Venice 1 2 0 5.4 1 9.4Hydro-Fire Boom NA NA 8 Utility40 Harvey 1 4 1.75 5.4 6 18.2MSRC44” Sea Sentry II Boom (2860’) NA NA 6 Crew 12 Ingleside 1 2 11 5.4 1 20.444” Sea Sentry II Boom (4290’) NA NA10 Crew 20 Galveston 1 2 8 5.4 1 17.444” Sea Sentry II Boom (6679’) NA NA 10 Crew 20 Lake Charles 1 2 5.5 5.4 1 14.944” Sea Sentry II Boom (1980’) NA NA 6 Crew 12 Fort Jackson 1 2 0.5 5.4 1 9.944” Sea Sentry II Boom (3190’) NA NA10 Crew 20 Pascagoula 1 2 4 5.4 1 13.42000’ Hydro-Fire Boom NA NA 16 Utility 80 Lake Charles 1 4 5.5 5.4 6 21.9Nearshore ResponseNearshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsCGA46’ FRV 5000 65 NA 4 Leeville 1 0 2 2.0 0 5.0Trinity SWS 21500 249 NA 4 Leeville 1 2 2 2.0 0 7.0Trinity SWS 21500 249 NA 4 Venice 1 2 2 2.0 0 7.0Enterprise Marine Services LLC (available through contract with CGA)CTCo 2603 NA 25000 1 Tug 6 Amelia 4 12 4 15.00 1 36.00CTCo 2607 NA 23000 1 Tug 6 Amelia 4 12 4 15.00 1 36.00CTCo 2608 NA 23000 1 Tug 6 Amelia 4 12 4 15.00 1 36.00Staging Area: VeniceNearshore and Inland SkimmersWith StagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotal HrsSWS Egmopol 3000 100 NA 3 Galveston 1 2 8 2 0 13SWS 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 13Foilex Skim Package (TDS 150) 891 45 NA 3 Lake Charles 1 2 5.5 2 0 8Foilex Skim Package (TDS 150) 891 45 NA 3 Galveston 1 2 8 2 0 8Foilex Skim Package (TDS 150) 891 45 NA 3 Harvey 1 2 1.75 2 0 114 Drum Skimmer (Magnum 100) 686 100 1 Crew 3 Lake Charles 1 2 5.5 2 0 84 Drum Skimmer (Magnum 100) 686 100 1 Crew 3 Harvey 1 2 1.75 2 0 112 Drum Skimmer (TDS 118) 240 100 1 Crew 3 Lake Charles 1 2 5.5 2 0 8Shoreline ProtectionStaging Area: VeniceShoreline ProtectionBoomVOOPersonsReq.Storage/WarehouseLocationHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs 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 2 2 2 2 4 12Beach BoomEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotal HrsBeach 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 toDeployTotal HrsWildlife 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 177,486Offshore Recovered Oil Storage 196,691Nearshore / Shallow Water EDRC 69,126Nearshore / Shallow Water Recovered Oil Storage 72,288Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 28 

## APPEN DIX I

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

A. Monitoring S ystems

LLOG subscribes to Impact Weather Service which provides access to real

- time

weather conditions , and provides periodic updates on impending inclement weather conditions 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 coordinates 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 816 is in water depths greater than 400 meters (1,312’); therefore LLOG will follow the guidelines of the applicable NTL 2009

- G02 by

monitorin g and gathering oce an current data using Acoustic Doppler Current Profile
(ADCP) while the MODU is on location.



## B. Incidental T akes

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 Training 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.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 29 

## APPENDIX 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. 8

– Protected Species Lease OCS

- G

- 33178 , Mississippi Canyon Block 816.

Lease Stipulation No. 8 is to refere nce 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 Surve y 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 Elimination”.



## 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 approval of separate regulatory filing s 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’); therefore, LLOG will follow the guid elines 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 816 is located within the 200 km zon e 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.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 30 

## APPENDIX K

ENVIRONMENTAL MITI GATION 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.



## 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 Training and Elimination”; Joint

NTL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead P rotected Species Reporting”; and Joint NTL No. 2012

- G02 “Implementation of Seismic Survey Mitigation Measures and Protected Species Observer Program”.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 31 

## APPENDIX L

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

A. 

## Produced Liquid Hydrocarbon Transportation Vessels

Not applicable to proposed operations.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 32 

## APPENDIX M

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

A. 

## General

Personnel involved in the pr oposed 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 person nel 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:

DP Semisubmersible Rig:

Type Maximum Fuel Tank

Stor age Capacity Maximum No. in Area at Any Time Trip Frequency or

Duration
Supply Boats 500 bbls 1 Six times weekly

Crew Boats 500 bbls 1 Three times weekly

Aircraft 1900 lbs 1 As Needed



### Semisubmersible Rig:

Type Maximum Fuel Tank Storage Capacity Maxi mum 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



## B. Diesel Oil Supply Vessels

Size of Fuel Supply

Vessel 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 816



## C. Drilling Fluids Transportation

See Table 2

– Wastes you will T ransport and/or Dispose of Onshore, located in Appendix F of this Plan.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 33 

## D. Solid and Liquid Wastes Transportation

See Table 2

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



## E. Vicinity Map

A Vicinity Plat showi ng the location of Mississippi Canyon 816 relative to the nearest

shoreline and onshore base is included as Attachment M

.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 34 

# Vicinity Map

Attachment M
(Public Information)Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 35 

## APPENDIX N

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

A. 

## General

The proposed surface disturbances in Mississippi Canyon Block 816 will be located approximately 5 5 miles from the nearest Louisiana shoreline, and approximately 95

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 th e offshore operations.

● Dispatching personnel and equipment, and d o es not anticipate the need for any expansion of the selected facilities as a result of the activities proposed in this

Initial Plan.

● Temporary storage for materials and equipment.

● 24 H our 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 Timetabl e

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.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 36 

## APPENDIX O
COASTAL ZONE MANAGEMENT ACT (CZMA) IN FORMATION
(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 Mississippi are enclosed as Attachment N

.



## B. Other Information

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

LLOG has considered all of Louisiana’s enforceable policies and certifies the consistency for the proposed operations.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 37 

# Coastal Zone Management Consi stency Statement for the States of Louisiana and Mississippi

Attachment N
(Public Information)Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 38 

# Coastal Zone Management Enforceable Policies for the

State of Mississippi

Attachment O
(Public Information)

## As authorized by the Federal Zone Management Act (CZMA), the State of Mississippi developed a Coastal Management Program (CMP) to allow for the review of proposed Federal license and permit activities affecting any coastal use or resources in or

outside t he Mississippi Coastal Zone.

The OCS related oil and gas exploration and development activities having potential impact on the Mississippi Coastal Zone are based on the location of the proposed facilities, access to those sites, best practical techniques for drilling locations, drilling equipment guidelines for the prevention of adverse environmental protection, emergency plans and contingency plans.

The proposed activities addressed in this Plan are located approximately 132 miles

from the nearest Missi ssippi Coastline.

Below are the goals identified by the State of Mississippi and LLOG’s response:

Goal 1: To provide for reasonable industrial expansion in the coastal area and to

ensure the efficient utilization of waterfront industrial sites so that suitable sites are conserved for water dependent industry.

The proposed activities are located in OCS Federal Waters, Gulf of Mexico, approximately 55 miles from the nearest Louisiana shoreline. LLOG Exploration
Offshore, L.L.C. (LLOG) will utilize exis ting facilities in Fourchon, Louisiana. Therefore, there should not be any anticipated or planned adverse impacts to Mississippi’s coastal area.

Goal 2: To favor the preservation of the coastal wetlands and ecosystems, except where a specific alternation of specific coastal wetlands would serve a higher public interest in compliance with the public purposes of the public trust in which the

coastal wetlands are held.

The proposed activities are located in OCS Federal Waters, Gulf of Mexico, approximatel y 132 miles from the Mississippi coastline and 55 miles from the nearest Louisiana shoreline. LLOG will utilize existing facilities in Fourchon, Louisiana. Therefore there should not be any anticipated or planned adverse impacts to Mississippi’s

coastal wetlands and ecosystems.

### Goal 3: To protect, propagate and conserve the State’s seafood and aquatic life in connection with the revitalization, and conserve the State’s seafood and aquatic life

in connection with the revitalization of the seafloor indu stry of the State of Mississippi.

The proposed activities are located in OCS Federal Waters, Gulf of Mexico, approximately 132 from the Mississippi coastline and 55 miles from the nearest Louisiana shoreline. LLOG will utilize existing facilities in Fo urchon, Louisiana. Therefore, there should not be any anticipated or planned adverse impacts to Mississippi’s seafood and aquatic life.

Goal 4: To conserve the air and waters of the State, and to protect, maintain and improve the quality thereof for pub lic use, for the prorogation of wildlife, fish, and aquatic life and for domestic, agricultural, industrial, recreational, and other legitimate beneficial uses.

The activities proposed in this Plan are located in OCS Federal Waters and will use existing facilities located in Louisiana; therefore, there should be no adverse impacts to Mississippi air and water quality.

For the activities scheduled in this Plan, LLOG is proposing to discharge authorized effluents into the receiving waters of the Gulf of Me xico. Overboard discharges (i.e. drilling fluids and associated cuttings) associated with the proposed activities must be tested first for toxicity limitations as mandated by EPA’s General

Permit GMG290000. Other solid waste such as comminuted food will first pass through a 25 mm type mesh screen, as regulated by the US Coast Guard’s Marine Pollution
Research and Control Act (MARPOL) of 1987.

Activities proposed in this plan will be conducted in accordance with LLOG’s approved Oil Spill Response Plan.

A n Air Quality Review has been performed addressing the activities proposed in this Plan and emissions for all parameters are below exemption limitations.

Goal 5: To put to beneficial use to the fullest extent of which they are capable the

water resources of the state, and to prevent the waste, unreasonable use, or

unreasonable method of use of water.

The activities proposed in this Plan are located in OCS Federal Waters and will use existing facilities located in Louisiana; therefore, there should be no adverse impacts to Mississippi water resources. Activities proposed in this Plan will be conducted in accordance with LLOG’s approved Regional Oil Spill Response Plan.

### Goal 6: To preserve the state’s historical and archaeological resources, to prevent their destruction, and to enhance these resources wherever possible.

The activities proposed in this Plan are located in OCS Federal Waters and will use existing facilities located in Louisiana; therefore, there should be no adverse impacts to Mississip pi historical and archaeological resources.

Goal 7: To encourage preservation of natural scenic qualities in the coastal area.

The activities proposed in this Plan are located in OCS Federal Waters and will use existing facilities located in Louisiana; therefore there should be no adverse impacts to Mississippi coastal area natural scenic qualities.

Goal 8: To assist local governments in the provision of public facilities services in a manner consistent with the coastal program.

The activities propo sed in this Plan are located in OCS Federal Waters and will use existing facilities located in Louisiana; therefore, there should be no affect on Mississippi local governments.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 39 

## 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 result 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 Producing 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 disposal Accidents (e.g., oil spills,

chemical spills, H2S
releases) Discarded

Trash &

Debris

Site Specific at Offshore

Location
Designat ed topographic

features (1) (1) (1)

Pinnacle Trend area live

bottoms (2) (2) (2)

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

Fisheries X 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)

Prehistoric archaeological sites (7)

Vicinity of Offshore Location

Essential fish habitat X (6)
Marine and pelagic birds X

Public healt h and safety (5)

Coastal and Onshore

Beaches (6)

Wetlands (6)
Shorebirds and coastal nesting

birds (6)

Coastal wildlife refuge

Wilderness areasMississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 40 

### Footnotes for Environmental Impact An alysis Matrix:

1. Activities that may affect a marine sanctuary or topographic feature . Specifically, if the well 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 Features 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 submari ne bank (500 ft buffer zone) with relief greater than 2 meters that is not protected by the Topographic Stipulation 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 are 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

determin e 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 anch or emplacements, in any OCS block designated by the BOEMRE as having high

- probability for the occurrence of shipwrecks or prehistoric sites, including such blocks that will be affected that are adjacent to the lease block in which your planned activity wil l occur. If the proposed activities are located a sufficient distance from a shipwreck or prehistoric site that 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 transportation of produced fluids to shore using shuttle tankers or barges.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 41 

## 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 site are detailed in our Regional Oil Spill Response Plan (OSRP) which outlines the potential spill scenario, spill volumes, anticipated trajecto ry 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 arran gements with well control specialists and preliminary reviews of potential well intervention scenarios, and to supplement existing contracted response/clean

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



## Site Specific at Offshore Location

• Designated Topographic Features

There are 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 Mississippi Canyon Block 816 are
located greater than 100 miles away 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, concentrated 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 spill, LLOG would immediately implement its Regional Oil Spill Response Plan and active source control and countermeasures to minimize these potential im pacts.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 42 

### • Pinnacle Trend Area Live Bottoms

There are no anticipated emissions, effluents, physical disturbances 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 disturbances within Mississippi Canyon Block 816 is

located a significant distance (> 100 miles) from the closest pinnacle trend live bottom stipulated block. The crests of these pinnacle trend areas are much deeper than 20 m.

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 surfac e location disturbance areas would be avoided and/or mitigated during the review and approval process by the BOEM.

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

• Eastern Gulf Live Bottoms

There are no anticipated emissions, effluents, emissions physical disturbances to the seafloor, wastes sent to shore, and/or accidents from the proposed activities

that coul d cause impacts to Eastern Gulf live bottoms.

T he proposed surface disturbance within Mississippi Canyon Block 816 is

located a significant distance (> 100 miles) from the closest Eastern Gulf live

bottom s stipulated block. During the surface location di sturbance 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 unan ticipated 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 at the surface locations in Mississippi Ca nyon Block 816 range
from 5,537 feet to 5,675 feet including anchor radius. As noted in the shallow
hazards assessment (Attachment I) it is unlikely that the identified anomalies represent the presence of high

- density chemosynthetic or other benthic

commu nities.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 43 

### • Water Quality

Bottom disturbances which may result based on placement of drilling rigs during an exploratory phase could increase water column turbidity and redistribution of any accumulated pollutants in the water column; which could

cause tempo rary impacts on water quality conditions in the immediate vicinity.

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

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

An accidental oil spill release from the proposed activities, and cumulative similar discharge 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 degradation would remove the oil from the water column or dilute the constituents to background levels.

In the event of an unanticipated blowout, LLOG w ill 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.

• Fisheries

Accidental oil spill releases from the proposed activities, and cumulative similar discharge activity 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 using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil Spill Response Plan andMississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 44 

### activate sourc e control and countermeasures to minimize these potential impacts.

• Marine Mammals

GulfCet II studies reveal that cetaceans of the continental shelf and shelf edge are comprised of bottlenose dolphin and Atlantic spotted dolphin. Squid eaters, including dwarf and pygmy killer w h ale, Risso’s dolphin and Cuvier’s beaked whale occur most frequently along the upper slope 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 let hal 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 o f the disturbed area, environmental and biological parameters that influence an animal’s sensitivity to disturbance 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).

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

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

BOEMRE in Notice to Lessees (NTLs) 2007

- G04 “Vessel Strike Avoidance and Injured/Dead Protective Species” and 2007

- G03 “Marine Trash & Debris Awareness & Elimination”. 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. AsMississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 45 

### such, it is not anticipated these discharges authorized under the approved EPA NPDES permit will not cause significant adverse impacts to water quality.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using p roven 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.

• Sea Turtles

Small numbers of turtles could be k illed or injured by chance collision with service vessels or by eating indigestible trash, particularly plastic items accidentally lost from drilling rigs, production facilities and service vessels. Drilling rigs and project vessels produce noise that cou ld disrupt normal behavior patterns and create some stress to sea turtles, making them more susceptible to disease. Accidental oil spill releases are potential threats which could have lethal effects on turtles. Contact and/or consumption of this release d material could seriously affect individual sea turtles. Most OCS related impacts on sea turtles 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 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 permit will not cause significant adverse impacts to water quality.

Additionally, LLOG and its contractors will conduct the proposed activities under the additional criteria addressed by BOEMRE in Notice to Lessees
(NTLs) 2007

- G04 “Vessel Strike Avoidance and Injured/Dead Protective Species” and 2007

- G03 “Marine Trash & Debris Awareness & Elimination”. The proposed operations will be conducted in accordance with the regulations

via manif esting 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 Re sponse Plan and activate source control and countermeasures to minimize these potential impacts.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 46 

### • Air Quality

The proposed activities are located approximately 63 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 as 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 shipwre ck sites, as the review of high resolution shallow hazards data indicate there are 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 Archa eological Sites

There are no physical disturbances to the seafloor which could cause impacts to prehistoric archaeological sites, as the review of high resolution shallow hazards data and supporting studies did not reflect the occurrence of prehistoric

ar chaeolo gical sites. As such LLOG does not anticipate an y IPF’s as a result of the proposed activities.

Vicinity of Offshore Location

• Essential Fish Habitat

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

An Accidental oil spill that may occur as a result of the 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 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

bo th metabolites and parent compounds.

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.Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 47 

### • 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 int o contact with the

released oil.

In the event of an unanticipated blowout resulting 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 wil l 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. LLOG has requested BOEMRE approval to classify the proposed objective area as absent of hydrogen sulfide.

Coastal and Onshore

• Beaches

As a result of the proposed activities, be aches may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 63 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 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

i mpacts.

• 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 63 miles) and the response capabilities that would be implemented, no signific ant adverse impacts are expected. Both historical spill data and the combined trajectory/risk calculations referenced in the publication of OCS EIA/EAMississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 48 

### BOEMRE 2002

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

coastline and associated envir onmental 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 sou rce control and countermeasures to minimize these potential impacts.

• Shore Birds and Coastal Nesting Birds

As a result of the proposed activities, shore birds and coastal nesting birds may be adversely impacted by an accidental oil spill. However, due t o the distance from shore (approximately 63 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 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.

• Coastal Wildlife Refuges

As a result of the proposed activities, c oastal wildlife refuges may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 63 miles) and the response capabilities that would be implemented, no significant adverse impacts are expected. Both hist orical 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 unan ticipated 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.

• Wilderness Area

As a result of the proposed activities, wilderness areas may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 63 miles) and the response capabilities that w ould beMississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 49 

### 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 th e 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 Spil l Response Plan and activate source control and countermeasures to minimize these potential impacts.

Other Resources Identified

LLOG has not identified any other environmental resources other than those addressed

above.



## 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 exploratio n of

this reservoir.



## D. Environmental Hazards

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 b e damage to the drilling rig, the unanticipated release of hydrocarbons depending upon the current status of the well. Additionally, the surface located in Mississippi Canyon Block 816 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 evacuation of

pers onnel; and will comply with the requirements of NTL’s 2008

- G09 and 2009

- G10.Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 50 

## 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 implement any mi tigation 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 impacts associated w ith the proposed activities. Therefore, a list of such entities is not being provided.



## H. Preparers

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

Carol Eaton Kathy Gowland
Regulatory C oordinator Regulatory Specialist
1001 Ochsner Boulevard, Suite 2000 1001 Ochsner Boulevard, Ste 2000 Covington, Louisiana 70433 Covington, Louisiana 70433

985

- 801

- 4300 (Phone) 985

- 801

- 4300 (Phone) Carole@llog. com Kathygo@llog.com



## I. References

The following documents were utilized in preparing the Environmental Impact

Assessment:

Document Author Dated

Shallow Hazards Assessment, Benthic Communities Evaluations & Archaeological Resource Survey
Shallow Hazards Assessment, Benthic Communities Evaluation & Archaeological Resource Survey for MC 816

- A Amended Revised and MC 816

- D Amended Berger Geosciences, LLC 20 10

20 13

BOEMRE Environmental Impact Statement Report No.

2007

- 003 Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2007

Title 30 CFR Part 250 Subpart B (250.2 16 / 250.2 21 /

250.2 23 / 250.2 27 Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2006

NTL 2000

- G16 “Guidelines for General Lease Surety

Bonds” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2000Mississippi Canyon Block 816 (OCS

- G 33178 ) 3/27/2013

Initial Exp loration Plan 51 NTL 2005

- G07 “Archaeological Resource Surveys and Reports” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2005

NTL 2006

- G07 “Revisions to the List of OCS Lease Blocks Requiring Archaeological Surveys and R eports:” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2006

Joint NTL No. 2012

- G02 “Implementation of Seismic Survey Mitigation Measures and Protected Species Observer Program” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 20 12

BSEE NTL No. 2012

- G01 “Marine Trash and Debris Awareness Training and Elimination” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 20 12

Joint NTL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead P rotected Species Reporting” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 20 12

NTL 2008

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

Documents” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2008

NTL 2008

- N05 “Guidelines for Oil Spill Financial Responsibi lity for Covered Offshore Facilities” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2008

NTL 2008

- G06 “Remotely Operated Vehicle Surveys in Deepwater” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2008

NTL 2008

- N07 “Supp lemental Bond Procedures Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2008

Joint NTL 20 11

- G 01 “Revisions to the List of OCS Lease Blocks Requiring Archaeological Resource Surveys and Reports” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 20 11

NTL 2009

- G02 “Ocean Current Monitoring” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2009

- G27 “Submitting Exploration Plans and Development Operations Coordination Documents” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2009

- G29 “Implementation Plan for Transition from

North American Datum 27 to North American Datum 83” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2009

- G31 “Hydrogen Sulphide” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2009

- G34 “Ancillary Activities” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

BOEM NTL 20 12

- G 01 “Drilling Windows, Eastern Gulf of

Mexico” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 20 12

NTL 2009

- G39 “Biologically

- Sensitive Underwater

Features and Areas” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2009

- G40 “Deepwater Benthic Communities” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2009

- N11 “Air Quality Jurisdiction on the OCS” Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2009

NTL 2010

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

NTL 2010

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

NPDES General Permit GMG290000 EPA

– Region VI 20 12
Regional Oil Spill Response P lan LLOG Exploration Offshore, L.L.C. 201 2Mississippi Canyon Block 816 (OCS

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Initial Exp loration Plan 52 

## 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 fol lowing:

• Proposed bottomhole 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 Hazards Assessment, Benthic Communities Evaluations & Archaeological Resource Survey
Shallow Hazards Assessment, Benthic Communities Evaluation & Archaeological Resource Survey for MC 816

- A Amended Revised and MC 816

- D Amended Berger Geosciences, LLC 20 10

20 13

BOEMRE Environmental Impact Statement Report

– No.

2007

- 003 Bureau of Ocean Energy Management /Bureau of Safety and Environmental Enforcement 2007

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