UNITED STATES GOVERNMENT MEMORANDUM

To: Public Information (MS 5030)

Plans Section, Office of Field Operations (MS 5231)

Public Information copy of Exploration Plan

Control # - S-07635

Type - Supplemental Exploration Plan

Lease(s) - OCS-G31521 Block - 705 Mississippi Canyon Area

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

Well B

Semisubmersible

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

should be addressed in an Environmental Assessment.

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

Chiquita Hill

Plan Coordinator Description -

Rig Type - Subject: From: November 4, 2013

# LLOG EXPLORATION OFFSHORE,

L.L.C.

1001 Ochsner Boulevard, Suite 200 Covington, Louisiana 70433



# SUPPLEMENTAL

EXPLORATION PLAN

OCS -G- 31521 LEASE

MISSISSIPPI CANYON BLOCK 705

PREPARED BY:

Kathy Gowland Regulatory Specialist 985-801-4300 ( Main)

985-801-4317 (Direct)

kathygo@llog.com



## September 2 5 , 2013Supplemental Exploration Plan Mississippi Canyon Block 705

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## 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), NTL

No. 2 008- G04 and NTL 2010-N06, LLOG Exploration Offshore, LLC proposes

to supplement our previously approved Initial Exploration Plan (Control No. N

9504) for the drilling, completion and testing and installation of subsea wellhead and/or manifold for proposed location “B”. The previously approved “A”

location has not be drilled as of this date.

Included as Attachment A is Form MMS 137 “OCS Plan Information Form”, which provides for the drilling, completion, and testing of Well Location B, Mississippi Canyon B lock 705.

(B) Location :

Attachment B

– Well Location Plat

Attachment C – Bathymetry Map detailing the proposed surface location disturbance area with the proposed anchor radius of the drilling rig.

(C) Safety & pollution features :

LLOG will util ize a semi

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

Safety features on the drilling unit will include well control, pollution prevention, and blowout prevention equipment as described in Title 30 CFR Part 250, Subparts C, D, E and G; and further clarified by BOEM’s Notices to Lessees, and currently policy making invoked by BOEM, EPA and USCG. Appropriate 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

.Supplemental Exploration Plan Mississippi Canyon Block 705

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### (D) Storage Tanks and Vessels :

Type of Storage Tank Type of Facility Tank Capacity

(bbls) Number of

tanks Total Capacity

(bbls) Fluid Gravity (API)

Fuel Oil (Marine Diesel) Semi

Submersible 95.24 2 190.5 No. 2 Diesel

– 43

29 17.8 4 11,671.2

Total 11,861.7



### (E) Pollution Prevention Measures

LLOG does not propose any additional safety, pollution prevention or early spill detection measures beyond those required by 30 CFR Part 250.

(F) Additional measures : No ad ditional measures are proposed.Supplemental Exploration Plan Mississippi Canyon Block 705

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# OCS PLAN INFORMATION FORM

Attachment A (Proprietary Information)U.S. Department of the Interior OMB Control Number: 1010-0151 Bureau of Ocean Energy Management OMB Approval Expires: 12/31/14



### OCS PLAN INFORMATION FORM

General Information

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

Company Name: BOEM Operator Number:

Address: Contact Person:

Phone Number:

E-Mail Address:

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

Project and Worst Case Discharge (WCD) Information

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

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

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

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

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

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

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

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

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

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

Proposed Activity Start Date End Date No. of Days

Exploration drilling

Development drilling

Well completion

Well test flaring (for more than 48 hours)

Installation or modification of structure

Installation of production facilities

Installation of subsea wellheads and/or manifolds

Installation of lease term pipelines

Commence production

Other (Specify and attach description)

Description of Drilling Rig Description of Structure

Jackup Drillship Caisson Tension leg platform

Gorilla Jackup Platform rig Fixed platform Compliant tower

Semisubmersible Submersible Spar Guyed tower

DP Semisubmersible Ot her (Attach Description)

Drilling Rig Name (If Known): Floating production

system Other (Attach Description)

Description of Lease Term Pipelines

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

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

### 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 2Supplemental Exploration Plan Mississippi Canyon Block 705

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# WELL LOCATION PLAT

Attachment B (Proprietary Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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# BATHYMETRY MAP

Att achment C (Public Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX B

GENERAL INFORMATION (30 CFR Part 250.213 and 250.243)

A. Applications and Permits

There are no Federal/State applications to be submitted for the activities provided for in this Plan (exclusive to BOEMRE permit ap plications and general permits issued by the EPA and COE)

Application/Permit Issuing Agency Status

N/A



## B. Drilling Fluids

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

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

Oil

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

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



## C. New Or Unusual Technology

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



## D. Bonding Statement

The bond requirements for the activities and facilities proposed in this Initial Exploration Plan are satisfied by an area wide bond, furnished and maintained according to 30 CFR Part 256; subpart I; NTL No. 2000

- G16, “Guidelines for General Lease Surety Bonds,” and additional security under 30 CFR 256.53(d) and NTL No. 2008-N07 “Supplemental Bond Procedures.”



## E. Oil Spill Responsibility (OSFR)

LLOG Exploration 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 No. 2008

- N05 “Guidelines for Oil Spill Financial Responsibility (OSFR) for Covered Facilities.”Supplemental Exploration Plan Mississippi Canyon Block 705

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## F. Deepwater Well Control Stateme nt

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



## G. Blowout Scenario

The Worst Case Discharge Calculations (Proprietary) w ere submitted to BOEM under letter dated July 20, 2011 with the Initial Exploration Plan (N -9504).

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

as Attachment D.Supplemental Exploration Plan Mississippi Canyon Block 705

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# NTL 2010

- 

# N06 Data



# BLOWOUT SCENARIO

Attachment D (Public Information)BLOWOUT SCENARIO

MC 705

OCS -G- 31521 Created by: S.L. Stegeman
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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 measures 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 705 OC S

- G

- 3 1521 8 50 699,9 97 ’ 10, 262

, 246 ’ 28 ° 14 ’ 5 2.023 ” 8 9 ° 55 ’ 16

. 539 ”

INFORMATION REQUIREMENTS

A) Blowout scenario

The MC 705 to be drilled to potential outlined in the Geological and Geophysical Information Section of this plan utilizing a typical subsea wellhead system, conductor, surface and intermediate casing strings from a pre

- existing wellbore and a MODU 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 dri ll pipe or obstructions in the wellbore followed by a failure of the subsea BOP’s and loss of well control at the seabed. The simulated flow and worst case discharge (WCD) results for all wells are calculated and the highest WCD is used for this unrestricted blowout scenario.

B) Estimated flow rate of the potential blowout

Category Revised EP Type of Activity Drilling / Completion Ops Facility Location (area / block) MC 705 Facility Designation MODU Distance to Nearest Shoreline (miles)

~ 53

Uncontrolle d Blowout (Volume per day) 123

, 200 bbls Type of Fluid Gas and Condensate

C) Total volume and maximum duration of the potential blowout

Duration of Flow (days) 9 9 days total (see Relief Well Response Estimate below ) Total Volume of Spill (bbls) 1 2

. 2 MMB O based on 9 9 days of uncontrolled flow

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

Omitted from Public Information Copies

E) Potential for the well to bridge over

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

- situ stress, rock strength and fluid velocities at the sand face. Given the substantial fluid velocities inherent in the WCD, and the scenario as defined where the formation is not supported by a

cased and cemented wellbore, it is possible that the borehole may fall/collapse/bridge over within aBLOWOUT SCENARIO

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2 span of a few days, significantly reducing the outflow of the rates. For this blowout scenario, no bridging is considered.

F) Likelihood for intervention to stop blowout

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

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

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

- Blind/ shear ram close

- Pipe ram close

- LMRP disconnect

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

- Pipe ram close

- LMRP disconnect

- WH disconnect

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

- programmed 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 systems for the subsea BOP’s fail, LLOG will initiate call out of a secondary containment / surface inte rvention system supported by the Helix Well Containment Group (HWCG) of which LLOG is a member. This system incorporates a capping stack capable of being deployed from the back of a vessel of opportunity equipped with an ROV or from the Helix Q4000 DP

MOD U. Based on the potential integrity concerns of the well, a “cap and flow” system can be deployed which may include the Helix Producer 1 capable of handling up to 55,000 BOPD flowback. The vertical intervention work is contingent upon the condition of th e 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.BLOWOUT SCENARIO

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

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

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

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 Group. The ability to negotiate and contract an appropriate rig or rigs to drill relief wells is highly probable in a short period of time. If the rig or rigs are operating, the time to properly secure the well and mobe the rig to the relief well site location 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 the water depth restrictions for the proposed locations the following “Vessels of Opportunity” are presently available for utilization for intervention and containment and relief well operations. These may include service vessels and drilling rigs capable of working in the potential water depths and may include moored vessels and dynamically positioned vessels. The specific conditions of the intervention or relief well operations will dictate the “best fit” vessel to efficiently perform the desired 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 (Moo red Semi)

• Ensco 8502 (DP Semi) – 4 point mooring w/ DP assist

• Transocean DD1 or DD2 (DP Semi)

– mooring capable

ROV / Mult i

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

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

• Helix Pipe Lay Vessel (equ ipped 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 / reduce likelihood of blowout

Pursuant to BOEM

- 2010

- 034 Final Inte rim Rules, m easures to enhance the ability to prevent or

reduce the likelihood of a blowout are largely based on proper planning and communication, identification of potential hazards, training and experience of personnel, use of good oil field practices

a nd 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, performing 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 designBLOWOUT SCENARIO

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4 criteria and well design is established, the well design is modeled for the lifecycle of the wellbore to ensure potential failure modes are eliminated. Pursuant to BOEM

- 2010

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

.

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

best wa y prevent a blowout incident. Contractor ’s personnel and service personnel training requi rements 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 personnel, office support personnel is critical to the success of the operations. Pre

- spud meetings are conducted with rig crews and service providers to discuss, inform and as needed improve operations and well plans for safety and efficiency considerations. Daily meetings are condu cted 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 incorporated 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 provider 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 each open hole section varies to optimize information gathered including the use of Formation

- Pressure

- While

- Drilling (FPWD) tools to establish real time formation pressures and to be used to calibrates pore pressure models while drilling. Log information and pressure data is used by the drilling engineers, geologist and pore pressure engineers to maintain well control and reduced potential events such as well control events and loss circulation

events.

Mud loggers continuously monitor return drilling fluids, drill gas levels and cuttings as well as surface mud volumes and flow rates, rate of penetration and lithology/paleo to aid in understanding trends and geology being drilled. Remote monitoring of real time drilling parameters and evaluation of geologic markers and pore pressure indicators is used to identify potential well condition changes.

Proper equipment maintenance and inspection program for same to before the equipment is required. Programmed equipment inspections and maintenance will be performed to ensure the equipment operability and condition. Operations will cease as needed in order to ensure 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 the proposed prospect. Specific plans are integrated into the Helix Well Containment Groups procures to be approved and submitted with the Application for Permit to Drill. Equipment availability, backup equipment and adaptability to the potential scenarios will need to be addressed based on the initial site assessment of the seafloor conditions for intervention operations. Relief well equipment such as backup wellhead equipment and tubulars will be available in LLOG’s inventory for immediate deployment as needed to address frilling the relief well(s).BLOWOUT SCENARIO

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5 SITE SPECIFIC PROPOSED RELIEF WELL AND INTERVENTION PLANNING

No platform was considered for drilling r elief wells for this location due to location, water depth and lack of appropriate platform within the area. For this reason a moored or DP MODU will be preferred / required. In the event the well can be contained, produced fluid can be plumbed into the production

manifold wi thin 200’ of the planned surface location. A LLOG pipeline is an abandoned 10” POGO Production pipeline that runs in close proximity and is presently planned to be used for the initial completion tie

- in.

A r elief well site ha s been initially identified to address blowout scenarios for the potential geologic targets for the proposed wells. One relief well surface locations is proposed for the p roposed

e xploration p lan well. Due to shipping fairway restrictions, the proposed relief well location(s) is

de pendent on governmental agency approvals. A 1000’ bathometry limit is planned to accommodate the use of DP MODUs which typically need 1000’ water depths to operate in a very tight watch circle.

Based o n actual seafloor state unforeseen at this time, the final location(s) may need to be revised.

The location ha s 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 705 OCS

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- 3 1521 MC 705 R1 699

, 973 ’ 10, 256

, 748 ’

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

RELIEF WELL RESPONSE TIME ESTIMATE

OPERATION TIME ESTIMATE (DAYS)

IMMEDIATE RESPONSE

• safeguard personnel, render first

- aid

• make initial notification s

• implement short term intervention (if possible)

• implement spill control

• develop Initial Action Plan 1

INTERIM REPSONSE

• establish Onsite Command Center and Emergency Management Team

• assess well control issues

• mobilize people and equipment (Helix DW Containment System)

• implement short term intervention and containment (if possible)

• develop Intervention Plan

• initiate relief well planning , negotiate , acquire rig(s) – 4 days

• continue spill control measures 4

IN TERVENTION AND CONTAIMENT OPERATIONS

• mobilize equipment and initiate intervention and containment operations

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

• secure rig operations (10 days), prep and mobe to location (4 days)

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

• continue spill control measures 14

RELIEF WELL(S) OPERATIONS

• continue intervention and containment measures

• continue spill control measures 60BLOWOUT SCENARIO

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6 • drill relief well(s) , ranging operations to intersec t wellbore

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 9 9 SECURE RELIELF WELL(S) / PERFORM P&A / TA OPERATIONS / DEMOBE 30

TOTAL DAYS 1 2 9

.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX C

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

A. Geological Description

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

B. Structure Contour Maps

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

C. Interpreted Seismic Lines

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

in this Plan.

D. Geological Structure Cross

- Sections.

An Interpreted geological cross section depicting the proposed well location and depth of the proposed well is included as Attachment H. Such cross section corresponds to each seismic line being submitted.

E. Shallow Hazards Report

Tesla Offshore, L.L.C conducted an archaeological deep tow survey and Berger Geosciences conducted high resolution geophysical survey in Mississippi Ca nyon Block 705 during October 2009 & February 2010 on behalf of LLOG Exploration Offshore,

L.L.C. A Supplemental Shallow Hazards Assess ment and Benthic Communities Evaluation for proposed Location “B” has been prepared by Berger Geosciences September, 2013, and is being submitted under separate cover.

F. Shallow Hazards Assessment

A shallow hazards assessment has been prepared for the proposed surface location, evaluating the seafloor and subsurface ge ologic and manmade features and conditions,

and is included as Attachment I.Supplemental Exploration Plan Mississippi Canyon Block 705

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### G. High Resolution Seismic Lines

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

H. Stratigraphic Column

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

I. Time vs Depth Tables

LL OG has determined that there is existing sufficient well c ontrol data for the target areas proposed in this Plan; therefore, tables providing seismic time versus depth for the proposed well locations are not required.Supplemental Exploration Plan Mississippi Canyon Block 705

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# GEOLOGICAL DESCRIPTION

Attachment E (Proprietary Informat ion)Supplemental Exploration Plan Mississippi Canyon Block 705

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# STRUCTURE MAPS

Attachment F (Proprietary Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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# DEEP SEISMIC LINES

Attachment G (Proprietary Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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# CROSS SECTION MAPS

Attachment H (Proprietary Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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# SHALLOW HAZARDS ASSESSMENT

Attachment I (Public Information)Tesla Offshore, LLC

36499 Perkins Road Prairieville, Louisiana 70769 Telephone: (225) 673-2163 Fax: (225) 744- 3116

August 13, 2013 Job. No. 13

- 153

- 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, Inc. Proposed OCS- G 31521 MC 705 Well ‘B’ Location
Surface Location in Block 705

, Mississippi Canyon Area Archaeological Analysis

Dear Staff:

LLOG Exploration Offshore, Inc. proposes to drill the OCS- G 31521 MC 705 Well ‘B’ from the following pre-approved surface location:

2,074.12 ’ F NL & 3,036.66 ’ F WL of Block 705 Mississippi Canyon Area

LLOG Exploration Offshore, Inc. (LLOG) selected Tesla Offshore LLC to provide this archaeological assessment of the proposed well location based on a high-resolution deep -tow sonar survey covering the proposed well site in Block 705 (OCS- G 31521 ) with

associated 8,000’ anchor/mooring radi us into adjacent survey blocks. The geophysical survey was conducted by Tesla Offshore aboard the M/V Nikola and utilizing the chase

vessel M/V Integri ty

for acoustic tracking. A complete archaeological assessment based

on the data set was prepared by Tesla Offshore and submitted to LLOG (Tesla Job #09-

411

- 12)

. Complete sonar survey coverage was obtained for the entire designated 8,000 foot radius surrounding the proposed well site. LLOG Exploration Offshore, Inc. operates lease OCS- G 31521 and contracted Tesla Offshore, LLC to provide this archaeological analysis (NTL No. 2005 -G07) in accordance with the Bureau of Ocean Energy Management, Gulf of Mexico OCS Region.

This archaeological assessment will be supplemented by a separate assessment of geohazards prepared under separate cover by Berger Geosciences, LLC which will address hazard concerns in compliance with NTL 2008-G05 and chemosynthetic potential in

accordance with NTL 2009-G4 0.

Water depth is approximately 850 feet surrounding the proposed drill site. Water depths de crease rapidly to the southeast due to extensive faulting.

Seafloor soils

are expected to be marine deposits (MMS Visual No. 5, 1986 ).

Identified m an -made features within the maximum anchor spread include : the clustered site of P&A Wells No. 1, 1, and 2, located approximately 285 ’ north of the proposed well site; the clustered site of P&A Wells, located approximately 900 ’ north of the proposed well site; and the approved Well No. 1 located approximately 160’

NW of the proposed surface location. The LLOG 3” & 6” pipelines (Segment No.TESLA OFFSHORE

LLOG Exploration Offshore, Inc. Proposed OCS-G 31521 MC 705 Well ‘B’ Location Surface Location in Block 705, Mississippi Canyon Area Archaeological Analysis Page 2

17305 & 17304) are located approximately 165’ NW of the proposed well site as is a proposed 2” umbilical. The parallel LLOG pipelines (Segments 17458, 17457, and 17505) are located north of the proposed well site, with the closest resting approximately 98’ to the NE. LLOG owns all of these pipelines and is aware of their proximity to the proposed drilling location. The individual pipelines were not apparent on the sonar data, suggesting that they have subsided below surficial sediments; therefore, it is recommended that a touch down survey be performed prior to drilling operations.

Magnetic data

is not required for survey in these water depths per NTL 2005-G07

and NTL 2008-G05.

Sonar data recorded soft layered surficial sediments of hemipelagic clays. Anchor divots, mooring line imprints, drilling mud, and probable debris associated with P&A Wells No. 1, 1, and 2 we re evident on the sonar data near the proposed drilling site. Fault scarps and associated pockmarks and outcrops were identified throughout the area. LLOG will submit a separately commissioned shallow hazard and chemosynthetic potential assessment addressing these features in more detail.

Sonar recorded a total o f four sonar targets within the survey grid, two of which fall within the proposed 8,000 foot anchor radius. Sonar target no. 1 is located in Block 661, Mississippi Canyon, approximately 6, 51 5 ’ NE of the proposed well site, and appears as a rectangular fe ature measuring approximately 23’ x 20’ with no relief. Target No. 3 is located in Block 705, Mississippi Canyon, approximately 7,5 65 ’ east of the proposed well site, and is rectangular in shape, measuring approximately 19’ x

8’ with no measurable relief. Target No. 2 is located in Block 705, Mississippi Canyon, approximately 8,020 ’ southeast of the proposed well site, and is rectangular in shape, measuring approximately 19’ x 8’ with no measurable relief. The targets do not appear to be culturally significant, and may represent modern man-made debris, as the sonar targets are located within a designated Fairway. The targets are recommended for avoidance by a distance of 250 feet, but are not considered to be high probability targets representative of historically significant cultural material.

Ancillary subbottom profiler data re corded numerous fault scarps that corresponded with sonar and echosounder data, primarily in the southeastern portion of the survey grid. Sub-seafloor faulting was observed at depths ranging from the

near -seafloor to over 100 feet BML. Several of the faults were observed with associated vertical gas wipeouts, or acoustic voids. Near-seafloor sediments at the proposed well location are fairly benign and well stratified beneath a surficial zone of undifferentiated acoustically amorphous deposits.TESLA OFFSHORE

LLOG Exploration Offshore, Inc. Proposed OCS-G 31521 MC 705 Well ‘B’ Location Surface Location in Block 705, Mississippi Canyon Area Archaeological Analysis Page 3

The combined deep tow sonar (120 kHz), echosounder, and ancillary subbottom profiler records verified that the seafloor is clear of potential shipwrecks within the proposed anchor radius surrounding the proposed Well ‘B’ location in Block 705, Mississippi Canyon Area. The sonar data did not reveal any objects that are believed to be potential ly significant cultural resources. Pursuant to 30 CFR 550.194 (c), 30 CFR 550.101 (c), and NTL 2005-G07, if any archaeological or potentially historically significant materials are observed during lease development, operations will immediately cease in that area and appropriate BOEM personnel will be notified within 48 hours of discovery.

LLOG Exploration Offshore, Inc. and subcontractors will apply the safest and best

availab le technologies during drilling operations.

Yours truly,

Matt Keith Erin Voisin, MA Geoscience Manager Marine ArchaeologistSupplemental Exploration Plan Mississippi Canyon Block 705

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# S TRATIGRAPHIC COLUMN

Attachment J (Proprietary Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX D HYDROGEN SULFIDE (H2S) INFORMATION (30 CFR Part 25 0.215 and 250.245 )

A. Concentration

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



## B. Classification

In accordance with 30 CFR 250.490© and NTL No. 2009- G3 1 “Hydrogen Sulfide”, B OEM classified this area as “H2S Absent” in the approval letter dated November 2, 2011 for the Initial Exploration Plan (N -9504).



## C. H2S Contingency Plan

Not applicable for the proposed operations.



## D. Modeling Report

Not applicable to the proposed operations.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX E BIOLOGICAL, PHYSICAL AND SOCIOECONOMIC

INFORMATION (30 CFR Part 250.216 and 250.247 )

A. High

- Density Deepwater Benthic Communities Information

There are no observed apparent features or areas that could support high -density

ch emosynthetic communities identified within 2,000’ of the proposed surface

location for this proposed well.



## B. Topographic Features Map

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



## C. T opographic Features Statement (Shuntin g)

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



## D. Live Bottoms (Pinnacle Trend) Map

Mississippi Canyon Block 705 is not located within the vicinity of a proposed live bottom (Pinnacle trend) area.



## E. Live Bottoms (Low Relief) Map

Mississippi Canyon Block 705 is not located within the vicinity of a proposed live bottom (Low Relief) area.



## F. Potentially Sensitive Biological Features Map

Mississippi C anyon Block 705 is not located within the vicinity of a proposed sensitive biological feature area.



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

Mississippi Canyon Block 705 is not located within an area where ROV Surveys are required.Supplemental Exploration Plan Mississippi Canyon Block 705

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### H. 

## Th reatened or Endangered Species, Critical Habitat, and Marine

Mammal Information

.

Proposed activities in Mississippi Canyon Block 705 is not located in the presence of federally listed threatened or endangered species and critical habitat designated under the ESA and marine mammal protected under the MMPA.

I. 

## Archaeological Report

Tesla Offshore, L.L.C conducted an archaeological deep tow survey and Berger Geosciences conducted high resolution geophysical survey in Mississippi Canyon Block 705 during October 2009 & February 2010 on behalf of LLOG Exploration Offshore, L.L.C.



## J. Air and Water Quality Information

Not applicable to proposed operations.



## K. Socioeconomic Information

Not applicable to proposed operations.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPEN DIX F

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

A. Projected Generated Wastes

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

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



## B. Projected Ocean Discharges

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



## C. Modeling Report

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 amount



### MC Block 705

Type of Waste Composition Projected Amount T

o Discharge rate Discharge Method Answer yes or no Will drilling occur ? If yes, you should list muds and cuttings

EXAMPLE: Cuttings wetted with synthetic based fluid Cuttings generated while using synthetic based drilling fluid. X bbl/well X bbl/day/well discharge

overboard No

Water-based drilling fluid Water based mud
additives, barite and gel used for WBM 18,263 bbls/well 7,309 bbls/day/well Discharge

overboard No

Cuttings wetted with water-based fluid Cuttings generated while using water based drilling fluid. 1,003 bbls/well 401 bbls/day/well Discharge

overboard No

Cuttings wetted with synthetic-based

fluid Cuttings generated while using synthetic based drilling fluid. 1,732 bbls/well 50 bbls/day/well Discharge

overboard No Will humans be there? If yes, expect conventional waste

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

overboard No

Domestic waste Kitchen water and unprocessed water not

used for sanitation 3,846 bbls/well 2.7 bbls/hr/well Discharge overboard (no free oil) No

Sanitary waste Processed sanitary waste from living quarters 2,564 bbls/well 1.8 bbls/hr/well Chlorinate and discharge

overboard No Is there a deck? If yes, there will be Deck Drainage

Deck Drainage Accumulated drainage

due to rainfall 0 to 47,261

bbls/well 0 to 167 bbls/hr/well Test for oil and grease and discharge

overboard No Will you conduct well treatment, completion, or workover?

Well treatment fluids NPDES approved

treatment fluid used for well operations 100 bbls/well 20 bbls/hr/well Test for oil and grease and discharge

overboard. No

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

overboard. This

excludes clear brines containing

Zinc No

Workover fluids N/ A N/ A N A N A No
Miscellaneous discharges. If yes, only fill in those associated with your activity. Desalinization unit discharge N/A N/A N/A N/A No

Blowout prevent fluid N/A N/A N/A N/A No

Ballast water Uncontaminated

seawater used for

ballast control 0 to 100,000

bbls/well 16,350 bbls/hr/well Discharge

overboard No Bilge water N/A N/A N/A N/A No

Excess cement at seafloor Excess cement slurry

and mixwater used for cementing operation -

NPDES allowed 300 bbls/well 360 bbls/hr/well Discharge at

mudline No

Fire water Uncontaminated

seawater used for fire control system 0 to 10,000

bbls/well 16,350 bbls/hr/well Discharge

overboard No Cooling water N/A N/A N/A N/A No

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

Produced water NA NA NA NA No

Will you be covered by an individual or general NPDES permit ? NOTE: If you will not have a type of waste, enter NA in the row. General NPDES Permit #GMG290000 Projected

Downhole Disposal Projected ocean discharges Projected generated waste TABLE 1. WASTES YOU WILL GENERATE, TREAT AND DOWNHOLE DISPOSE OR DISCHARGE IN THE GOMplease specify whether the amount reported is a total or per wellMC Block 705Projected generatedwasteSolid and LiquidWastes transportationType of WasteCompositionTransport MethodName/Location of Facility AmountDisposalMethodWill drilling occur ? If yes, fill in the muds and cuttings.EXAMPLE: Synthetic-based drilling fluid ormudinternal olefin, esterBelow deck storage tanks onoffshore support vesselsNewport EnvironmentalServices Inc., Ingleside, TX X bbl/well RecycledOil-based drilling fluid or mudN/ANAN/ANANASynthetic-based drilling fluid or mudInternal olifin, ester nbased mudBarged in 25 bbls cutting boxes and/ or liquid mud tanks for supplyvesselsNewpark Transfer Station,Fourchon, LA6750 bbls /well RecycledCuttings wetted with Water-based fluidN/ANAN/ANANACuttings wetted with Synthetic-based fluidN/ANAN/ANANACuttings wetted with oil-based fluidsN/ANAN/ANANAWill you produce hydrocarbons? If yes fill in for produced sand.Produced sandN/AN/AN/AN/AN/AEXAMPLE: trash and debris (recylables) Plastic, paper, aluminum barged in a storage binARC, New Iberia, LAX lb/well RecycledTrash and debrisPlastic, paper, aluminum Barged in a storage binBlanchard Landfill, GoldenMeadows, LA4000 lbs / wellRecycled andland fillUsed oilSpent oil from machineryBarged in USCG approved transfertote tanks.L&L Services, Fourchon, LA 200 bbls / well RecycledWash waterWash water w/ SBM residueand surfactantsBarged in 25 bbls cutting boxes and/ or liquid mud tanks for supplyvesselsNewpark Transfer Station,Fourchon, LA2000 bbls /wellApproveddisposal wellinjection or landfarmChemical product wastesSpent treatment and / ordamaged chemicals used inoperationsBarged in 25 bbls cutting boxes and/ or cutting boxesL&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 ONSHOREWaste DisposalWill you have additional wastes that are not permitted for discharge? IfSupplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDI X G

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

A. Emissions Worksheets and Screening Questions

The Projected Quality Emissions Report (Form MMS

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

typ ical semi

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

As evidenced by Attachment K, the worksheets were completed based on the proposed flaring and burning operations.

Screening Questions for EP’s Yes No

I s 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 (w here D = distance to shore in miles)? X

Does your emission calculations include any emission reduction measures or

modified emission factors? X

Are your proposed exploration activities located east of 87.5 degrees W longitude? X
Do you expect to enco unter H2S at concentrations greater than 20 parts per million (ppm)? X

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

Do you propose to burn produced hydrocarbon liquids? X



## B. Emissions Reduction Measures

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



## C. Verification of Nondefault Emissions Factors

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

K.



## D. Non

- Exempt Activities

The proposed activities are within the exemption amount as provided in

Attachment K.



## E. Modeling Report

This section of the Plan is not applicable to the proposed operations.Supplemental Exploration Plan Mississippi Canyon Block 705

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# AIR QUALITY EMISSIONS REPORT

At tachment K (Public Information)SUMMARY

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

LLOG Exploratio Mississippi Canyon 705 OCS-G 24074 Semisubmersible Location B

Emitted Substance

Year

PM SOx NOx VOC CO

2013 7.56 34.69 259.91 7.80 56.71

2014 13.67 62.71 469.88 14.10 102.52

Allowable 1764.90 1764.90 1764.90 1764.90 47972.92Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX H

OIL SPILL INFORMATION (30 CFR PART 250.219 AND 250.250)

A. 

## Oil Spill Response Planning

The proposed activities in this Initial Exploration Plan will be covered by the Oil Spill Response P lan filed by LLGO (MMS Operator No. 020258) in accordance with 30 CFR 254 Biennial update approved on August 8, 2012 and modifications submitted on January 29, 2013, approved February 25, 2013, and April 11, 2013, approved on April 19, 2013.

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

B. 

## Spill Response Sites

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

Primary Response Equipment

Location Pre

- Planned Staging Location(s)

Houma, LA Fort Jackson, LA

C. 

## OSRO Information

The O’Brien Group (TOG) will provide trained personnel capable of providing supervisory management of the oil spill response in addition to contacting and deploying cleanup personnel and equipment

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

clean

- up equipment. CGA is supported by the Marine Spill Response Corporation’s (MSRC), which is responsible for storing, inspecting, maintaining and dispatching CGA’s equipment. The MSRC STARS network provides for the closest available personnel, as well as an MSRC supervisor to operate the equipment.Supplemental Exploration Plan Mississippi Canyon Block 705

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## D. Worst

- Case Scenario Information

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

Block 547 Mississippi Canyon Block 705

Facility Description Well Location 2 Well Location B

Distance to Nearest Shoreline (Miles) 38.4 53

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

Potential 24 Hour Volume (bbls) Total Volume (Max duration 99 day) 225,144 bbls

22,289,256 bbls 123,200 bbls

21,196,800 bbls

Type of Liquid Hydrocarbon Condensate Crude Oil API Gravity 2 8 o 43 o



### Since LLOG 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 approved on August 8, 2012, and modifications submitted on January 29, 2013, approved February 25, 2013, and April 11, 2013, approved on April 19, 2013 and since the worst case discharge determined in our Initial Exploration Plan

for MC 705 does not exceed our worst case discharge outlined in our Regional OSRP, I hereby certify that LLOG Exploration Offshore, L.L.C. has the capability to respond, to the maximum extent practicable, to a worst

- case discharge, or a substantial threat of such a discharge, resulting from the activities proposed in this Supplemental Exploration Plan. The WCD for the subject plan does not exceed the worst case discharge previously submitted for MC 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 October 6,

2011.

The required proprietary data outlined in NTL 2010-N06 was submitted to BOEM within the under letter dated July 20, 2011, for the Initial Exploration Plan (N

9504).



## 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 123,200 barrels of conde nsate with an API gravity of 43.9°.

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 BOEM Oil Spill Risk Analysis Model (OSRAM) for the Central and

Western Gulf of Mexico available on the BOEM website. The results ar e shown in Figure 1. The BOEM OSRAM identifies a 4% probability of imp act to the shorelines of Plaquemines Parish, LA within 10 days. Plaquemines Parish includ es Barataria Bay, the Mi ssissippi River Delta, Breton Sound and the affiliated islands and bays. Th is region is an extremely sensitive habitat, and serves as a migratory, breeding, feeding and nursery habitat for numerous species of

wildlife. Beaches in this area vary in grain pa rticle size, and can be clas sified 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 prac ticable. A description of the response equipment available to

contain and recover the Worst Case Discharge is shown in Figure 2.

Using the estimated chemical and physical char acteristics of condensate, an ADIOS weathering model was run on a similar product from the ADIO S oil database. The results indicate 27% or approximately 33,264 barrels of condensate would be evaporated/dispersed with in 24 hours, with approximately 89,936 barrels remaining.

Spill Response MC 705 Barrels of Oil

WCD Volume 123,200

Less 27% natural evaporation/dispersion 33,264

Remaining volume 89,936

Oil addressed by in-situ burning 4,496



### Figure 2 outlines equipment, personnel, materials and support vessels as well as temporary storage equipment available to respond to a spill of 123,200 barrels. The list estimates individual times needed for procurement, 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 in-situ burn. Strategies will be decided by Unified Command based on size of the spill, weather and potential impacts. If the conditions are favorable for in-situ burning, the proper approvals have been obtained and the prope r planning is in place, in-situ burning of oil may be attempted. Using estimates based on the Deepwater Horizon spill of 2010, up to 5% or approximately 4,496 barrels of th e total daily Worst Case Disc harge volume could be burned.

### Slick containment boom along with sorbent boom would be immediately called out and on-scene as soon as possible. Offshore response strategi es may include collecti on of condensate with sorbent boom (inside hard boom), attempting to skim utilizing the HOSS Barge, nine Fast Response Units, two Aqua Guard Triton RBS skim mers, and eleven sets of Koseq skimming arms, with a total derated sk imming capacity of 318,609 barrels. Temporary storage associated with skimming equipment equals 31,700 barrels. If additional storage is needed, an 80,000 barrel storage barge, an 83,937 barrel storage barg e, an 86,948 barrel storag e barge, and a 107,285 barrel storage barge may be mobilized and centrally located to provide temporary storage allowing the skimmers to stay in the ar ea of operations as much as possible. Safety is first priority. Air monitoring 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 54,753 barrels. Temporary storage asso ciated with skimming equipm ent equals 1,861 barrels. If additional storage is needed, an 86,948 barrel storage barge may be mobilized and centrally located to provide temporary storage allowing the sk immers 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 vegetate d areas. MSAs with AMPOL and Oil Mop will ensure the availability of 147,000 feet of 18” shoreline boom. Figure 2 (below) outlines individual times needed for procurement, load out, travel time to the site and deployment. Strategies would be based upon surveillance and r eal time trajectories that depict areas of potential impact given actual s ea and weather conditions. The State of Louisiana Initial Oil Spill Response Plan for Plaquemines Parish and Unifie d Command would be consulted to ensure that environmental and special economic resources woul d be correctly identifie d and prioritized to ensure optimal protection. Shorel ine protection strategies depict the protection response modes applicable for oil spill clean-up operations. The St ate of Louisiana Initial Oil Spill Response Plan provides detailed shoreline protection strategies fo r this area, and it describes necessary action to keep the oil spill from entering Louisiana’s co astal wetlands, based on the assumption that

removal of the released oil will be much easier and less damaging to fragile coastal ecosystems if done in the open waters of the Gulf of Mexico. Supervisory personnel have the option to modify the deployment and operation of equipment allowi ng a more effective res ponse 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 48 hours (based on the equi pment’s Effective Daily Recovery Capacity (EDRC)). LLOG Exploration Offshore, L.L.C. will continue to commit additional on-water mechanical recovery resources as well as apply dispersants and in-situ burning needed and as approved, under the supervision of the USCG Ca ptain of the Port (COTP) and the Regional Response Team (RRT).

### Initial Response Considerations Actual actions taken during an oil spill response will be based on many factors to include but not

be 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.

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 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

Offshore Response Actions

Equipment Deployment

Surveillance

• Surveillance Aircraft: within two hours of QI notificati on, 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 remote sensing systems, aerial photography

and visual confirmation

• Continual monitoring of vessel assets using vessel m onitoring systems

### Containment boom & sorbent 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 dist ance from 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

T&T Koseq Skimming Systems

• To the area of the thickest oil

• Use as far off-shore as allowed

• VOOs with a minimum of 2,000 bbls storage capacity

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 deployment 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 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

### Near Shore Response Actions

Timing

• Put near shore assets on standby and deploym ent in accordance with planning based on the actual situation, actual trajectories and oil budgets

• VOO identification and training in advance of spill nearing shoreline 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 remote sensing systems, aerial photography

and visual confirmation

• Continual monitoring of vessel assets

Vessel Deployment Dedicated Near Shore skimming systems

• FRVs

• Egmopol and Marco 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 vessel 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 time 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 considered and appropriate stocks 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

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 BOEM Oil Spill Risk Analysis Model (OSRAM) for th e Central and Western Gulf of Mexico available on the BOEM website using 10 day impact. The results are tabulated below.

Area/Block OCS-G Launch

Area Land Segment and/or

Resource Conditional Probability (%) within 10 days

Exploratory Drilling

MC 705 #1

53 miles from shore G31521 C58 Terrebonne Parish, LA Lafourche Parish, LA Plaquemines Parish, LA 1

2

4WCD Scenario– BASED ON WELL BLOWOUT DURING DRILLING OPERATIONS(53 miles from shore)123,200 bbls of condensateAPI Gravity 43.9°FIGURE 2 – Equipment Response Time to MC 705#1SurveillanceSurveillanceDispersantCapacity (gal)StorageCapacityPersonsReq.From Hrs to ProcureHrs toLoadoutTravel tositeTotal HrsASIAero CommanderNA NA 2 Houma11 0.82.8Offshore ResponseOffshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsCGAHOSS Barge43000 4000 3 Tugs 8Harvey7 0 5 7.5 1 20.5T&T Marine (available through contract with CGA)Koseq Skimming Arms (3) 53487 6000 3 Utility 18 Leeville 4 12 15 2 24Koseq Skimming Arms (2) 35658 4000 2 Utility 12Venice4 12 15 2 24Koseq Skimming Arms (1) 17829 2000 1 Utility 6 Fourchon 4 12 15 2 24Koseq Skimming Arms (5) 89145 10000 5 Utility 30 Galveston 4 12 1 24.2 2 43.2Recovered Oil Storage NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsK-Sea Operating (available through contract with CGA)PACIFIC 996165NA 80000 1 Tug 6Venice4 12 4 7.5 1 28.5DBL 76 1212984NA 83937 1 Tug 6Venice4 12 4 7.5 1 28.5DBL 81 1132231NA 86948 1 Tug 6Venice4 12 4 7.5 1 28.5DBL 101 1119760NA 107285 1 Tug 6Venice4 12 4 7.5 1 28.5Staging Area: VeniceOffshore Equipment WithStagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toSiteHrs toDeployTotalHrsCGAFRU (1) + 100 bbl Tank (2) 3770 200 1 Utility 6 Belle Chasse 1 2 25 1 11FRU (1) + 100 bbl Tank (2) 3770 200 1 Utility 6 Galveston 1 2 85 1 17FRU (3) + 100 bbl Tank (5) 11310 500 1 Utility 6Houma1 2 35 1 12FRU (1) + 100 bbl Tank (2) 3770 200 1 Utility 6 Ingleside 1 2 11 5 1 20FRU (1) + 100 bbl Tank (2) 3770 200 1 Utility 6 Lake Charles 1 2 5.5 5 1 14.5FRU (2) + 100 bbl Tank (4) 7540 400 1 Utility 6Venice1 2 05 1 9Aqua Guard Triton RBS (2) 45560 4000 2 Utility 12 Galveston 4 12 85 2 17Offshore Equipment WithStagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toSiteHrs toDeployTotalHrsCGA42” Auto Boom (5000’) NA NA 10 Crew 20 Belle Chasse 1 2 25 1 1142” Auto Boom (5000’) NA NA 10 Crew 20 Galveston 1 2 85 1 1742” Auto Boom (5000’) NA NA 10 Crew 20Houma1 2 35 1 1242” Auto Boom (2500’) NA NA 6 Crew 12 Ingleside 1 2 11 5 1 2042” Auto Boom (5000’) NA NA 10 Crew 20 Lake Charles 1 2 5.5 5 1 14.542” Auto Boom (2500’) NA NA 6 Crew 12 Pascagoula 1 2 45 1 131000’ Hydro-Fire Boom(In-Situ Burn)NA NA 8 Utility 40Harvey1 4 25 6 18Nearshore ResponseNearshore Equipment NoStagingEDRCStorageCapacityVOOPersonsRequiredFromHrs toProcureHrs toLoadoutHrs toGOMTravel toSpill SiteHrs toDeployTotalHrsK-Sea Operating (available through contract with CGA)DBL 82 1137538NA 86948 1 Tug 6Venice4 12 4 6.25 1 27.25CGA46’ FRV5000 65 NA 4 Galveston 1 0 0 12.4 0 13.446’ FRV5000 65 NA 4Houma1 0 2 2.8 0 5.846’ FRV5000 65 NA 4 Lake Charles 1 0 1 9.2 0 11.246’ FRV5000 65 NA 4Venice1 0 12 0 4Trinity SWS21500 249 NA 4 Morgan City 1 2 2 4.8 1 10.8Staging Area: VeniceNearshore and InlandSkimmers With StagingEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotalHrsCGASWS Egmopol3000 100 NA 3 Galveston 1 2820 13SWS Egmopol3000 100 NA 3Houma1 2320 8SWS Marco3588 34 NA 3Houma1 2320 8SWS Marco3588 20 NA 3 Lake Charles 1 2 5.520 10.5Rope Mop77 2 0 3 Belle Chasse 1 2220 7RO Storage BargeNA 249 Towed 0 Galveston 1 2820 13RO Storage BargeNA 249 Towed 0Houma1 2320 8RO Storage BargeNA 249 Towed 0 Lake Charles 1 2 5.520 10.5RO Storage BargeNA 249 Towed 0Venice1 2020 5Shoreline ProtectionStaging Area: VeniceShoreline ProtectionBoomVOOPersonsReq.Storage/WarehouseLocationHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotal HrsAMPOL (available through MSA)42,000’ 18” Boom 16 Crew 40New Iberia, LA2 242122220,000’ 18” Boom 8 Crew 20New Orleans, LA2 222614Oil Mop (available through MSA)10,000’ 18” Boom 4 Crew 10New Iberia, LA1 14231110,000’ 18” Boom 4 Crew 10Houston, TX1 1 7.52314.510,000 18” Boom 4 Crew 10Port Arthur, TX1 1 6.252313.2520,000 18” Boom 8 Crew 20Belle Chasse, LA1 1 1.752611.7510,000 18” Boom 4 Crew 10Port Allen, LA1 1 3.52310.510,000 18” Boom 4 Crew 10Houma, LA1 1 3.52310.515,000 18” Boom 6 Crew 14Gretna, LA2 222412Beach BoomEDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotalHrsCGABeach Boom (2000’)NA NA NA 6 Galveston 1 2812 14Beach Boom (1000’)NA NA NA 4 Ingleside 1 2 1112 17Beach Boom (2000’)NA NA NA 6 Pascagoula 1 2412 10Wildlife Response EDRCStorageCapacityVOOPersonsReq.FromHrs toProcureHrs toLoadoutTravel toStagingTravel toDeploymentHrs toDeployTotalHrsCGAWildlife Support Trailer NA NA NA 2Houma1 2312 9Bird Scare Guns (24)NA NA NA 2 Belle Chasse 1 2212 8Bird Scare Guns (12)NA NA NA 2 Galveston 1 2812 14Bird Scare Guns (24)NA NA NA 2Houma1 2312 9Bird Scare Guns (12)NA NA NA 2 Ingleside 1 2 1112 17Bird Scare Guns (24)NA NA NA 2 Lake Charles 1 2 5.512 11.5Bird Scare Guns (24)NA NA NA 2 Pascagoula 1 2412 10Response AssetTotalOffshore EDRC318,609Offshore Recovered Oil Storage389,870Nearshore / Shallow Water EDRC54,753Nearshore / Shallow Water Recovered Oil Storage88,709Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX I

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

A. Monitoring Systems

LLOG subscribes to Impact Weather Service which provides access to real

- time weather conditions, and provides periodic updates on impending inclement weather 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 705 is in water depths greater than 300 meters (984 feet); therefor e, LLOG will follow the guidelines of the applicable NTL 2009

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

location.



## B. Incidental Takes

LLOG does not anti cipate 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 S trike 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.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX J

LEASE STIPULATIONS/SPECIAL CONDITIONS INFORMATION (30 CFR PART 250.222 A ND 250.253)

A. Lease Stipulations

Minerals Management Service (BOEMRE) did not invoked any stipulations for

Lease OCS -G 31521, Mississippi Canyon Block 705.



## B. Special Conditions

• Subsea Completions

LLOG may potentially complete the proposed we ll as a subsea completion. Therefore, LLOG will follow the regulations in Title 30 CFR Parts 550.296 through 550.299, which mandates the submittal and approval of separate regulatory filings entitled a “Conservation

Information Document” and Title 30 CFR Parts 250.286 to Title 30 CFR Parts 250.295 entitled “Deepwater Operations Plan”.

• Ocean Current Monitoring

The proposed operations under this Plan ar e in water depths greater than

3 00 meters ( 984 ’); therefore, LLOG will follow the guidelines of the appl icable NTL 2009

- G02 “Ocean Current Monitoring”, 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 705 is located within the 200 km zone of the Breton National Wildlife Refuge, and LLOG 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.

• Shipping Fairways

The proposed surface disturbance in Mississippi Canyon Block 705 is

located approximately 600 ’ outside the boundary of a designated shipping fairway as detailed on the location plat included as Attachment B.

Therefore, LLOG will comply with the U. S. Coast Guard and U. S. Army Corp of Engineers regarding the placement of MODU’s and associated

anchors and chains.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX K

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

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

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



## D. Incidental Takes

LLOG does not 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. 20 12- G01 “Marine Trash and Debris Awareness Training and

Elimination” and Joint NTL No. 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Protected Species Reporting”.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX L

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

A. 

## Produced Liquid Hydrocarbon Transportation Vessels

Not applicable to proposed operations.Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX M

SUPPORT VESSELS AND AIRCRAFT INFORMATION (30 CFR PART 250.224 A ND 250.257)

A. 

## General

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

conditions:

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

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

Crew Boats 500 bbls 1 Three times weekly

Aircraft 1900 lbs 1 As Needed

Anchor Han dling

Vessel 15,100 bbls 1 3

- 4 days

Work Boat 6,450 bbls 1 3

- 4 days



## B. Diesel Oil Supply Vessels

Size of Fuel Supply

Vessel Capacity of fuel Supply Vessel Frequency of Fuel

Transfers Route Fuel Supply

Vessel Will Take

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

Block 705



## C. Drilling Fluids Transportation

See Table 2 – Wastes you will Transport and/or Dispose of Onshore, located in Appendix F of this Plan.



## E. Solid and Liquid Wastes Transportation

See Table 2

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



## F. Vicinity Map

Vicinity Plats showing the location of Mississippi Canyon Block 705 relative to

the nearest shoreline and onshore base are included as Attachment L.Supplemental Exploration Plan Mississippi Canyon Block 705

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# Vicinity Map

Attachment L (Public Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX N

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

A. 

## General

The proposed surface disturbances in Mississippi Canyon Block 705 will be located approximately 53 miles from the nearest Louisiana shoreline, and approximately 62 miles from the following onshore support base:

Name Location Existing/New/Modified

Martin North Fourchon, LA Existing

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

● Loading/Offloading point for equipment supporting the offshore operations. ● Dispatching personnel and equipment, and does not anticipate the need 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 Hour Dispatcher



## B. Support Base Construction or Expansion

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



## C. Support Base Construction or Expansion Timetable

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



## D. Waste Disposal

See Table 2 – Wastes you will Transport and/or Dispose of Onshore, located in Appendix F of this Plan.Supplemental Exploration Plan Mississippi Canyon Block 705

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

A. Consistency Certification

. A certificate of Coastal Zone Manag ement Consistency for the State of Louisiana

is enclosed as Attachment M



## B. Other Information

LLOG has considered all of Louisiana’s enforceable policies and certifies the consistency for the proposed operations.Supplemental Exploration Plan Mississippi Canyon Block 705

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# Coastal Zone Management Consistency Statement for

the State of Louisiana

Attachment M (Public Information)Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX P

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

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

The following matrix is utilized to identify the affected environments that could be impacted by these IP F’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 ac tivities, 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) Other IPF’s you Identify

Site Specific at Offshore

Location Designated topographic

features (1) (1) (1)

Pinnacle Trend area live

bottoms (2) (2) (2)

Eastern Gulf live 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) X (7) X

Prehistoric archaeological sites X (7) X

Vicinity of Offshore Location

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

Coastal and Onshore

Beaches (6)

Wetlands (6)
Shorebirds and coastal nesting

birds (6)

Coastal wildlife refuge

Wilderness areasSupplemental Exploration Plan Mississippi Canyon Block 705

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### Footnotes for Environmental Impact Analysis 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 o f 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 submarine 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 tha t you determine would impact these environmental resources. If the proposed action is located a sufficient distance from a resource that no impact would occur, the EIA can note that in a sentence or

two.

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

- probability for the occurrence of shipwrecks or prehistoric sites, including such blocks that will be affected that are adjacent to the lease block in which your planne d activity will 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.Supplemental Exploration Plan Mississippi Canyon Block 705

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## B. Impact Analysis

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

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

- N06). Response details associated with an unanticipated spill from this site are detailed in our Regional Oil Spill Response Plan (OSRP) which outlines the potential spill scenario, spill volumes, anticipat ed trajectory of the spill, response equipment available, and actions to be taken to respond to the potential spill incident. Additional measures implemented by LLOG is trajectory analyses to be obtained prior to and during the proposed activities, contra ctual arrangements 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 intervention, 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 705

is located approximately 18 miles away from the from the closest designated topographic feature (Sackett Bank).

The crests of these designated topographic features in the northern Gulf are typically found below 10 m; therefore, concentrated oil from a surface spill is not likely to reach sessile biota. Subsurface spills could cause adverse impacts to a designated t opographic 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 impacts.Supplemental Exploration Plan Mississippi Canyon Block 705

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### • 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 t rend area.

The proposed surface disturbance within Mississippi Canyon Block 705 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. In the event of an accidental oil spill from the proposed activities, the gravity of such oil (high gravity condensate and/or diesel fuel) would rise to the surface, quickly dissipate, and/or be swept clear by currents moving around the bank; and thus not impacting the pinnacles.

During the surface location disturbance review, LLOG reviews potential surface impacts, and would be able to identify any pinnacles within the vicinity and would avoid placement of any surface disturbances such as a drilling r ig and associated anchors. These surface 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 Resp onse Plan and activate source control and 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 accident s from the proposed activities that could cause impacts to Eastern Gulf live

bottoms.

The proposed surface disturbance within Mississippi Canyon Block 705 is located a significant distance (> 100 miles) from the closest Eastern Gulf live bottoms stipulat ed block. During the surface location disturbance review, LLOG previews potential surface impacts, and would be able to identify any live bottom areas within the vicinity and would avoid placement of any surface disturbances such as a drilling rig and ass ociated

anchors. In the event of an accidental oil spill from the proposed activities, the gravity of such oil (high gravity condensate and/or diesel fuel) would rise to the surface, quickly dissipate, and/or be swept clear by currents moving around the bank; and thus not impacting the Eastern Gulf live bottoms because of the depth of the features and dilutions of spills.Supplemental Exploration Plan Mississippi Canyon Block 705

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### In the event of an unanticipated spill, LLOG would immediately implement its Regional Oil Spill Response Plan and activate source

contr ol and countermeasures to minimize these potential impacts.

• Chemosynthetic Communities

Water depths in Mississippi Canyon Block 705 range from 805’ to 1,240’ including anchor radius. Therefore, the proposed activities are not located within the vicinity of any known chemosynthetic communities, which typically o ccur in water depths greater than 300 meters. Based on the water depth, there are no anticipated emissions, effluents, emissions physical dist urba nces to seafloor, wastes sent to shore, and/or acc idents from the proposed activities that could impact these types of communities.

• Water Quality

Bottom disturbances which may result based on placement of drilling rigs during an exploratory phase could increase water column turbidity and

redistributio n of any accumulated pollutants in the water column; which could cause temporary impacts on water quality conditions in the immediate vicinity.

Associated overboard effluents are regulated by the EPA Region VI

NPDES General Permit GMG290000 which mandates volume discharge rate limitations, certain testing requirements for toxicity and oil and grease limitations. As such, it is not anticipated these discharges authorized under the approved EPA NPDES permit will cause significant adverse impacts to water quality.

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

An accidental oil spill release from the proposed activities, and cumulative similar 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 constitu ents to background levels.

In the event of an unanticipated blowout, LLOG will implement industry wide standards for using proven equipment and technology for such responses. LLOG would immediately implement its Regional Oil SpillSupplemental Exploration Plan Mississippi Canyon Block 705

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

• Fisheries

Accidental oil spill releases from the proposed activities, and cumulative similar discharge 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 avo id 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 i mmediately implement its Regional Oil Spill Response Plan and activate source 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 o f bottlenose dolphin and Atlantic spotted dolphin. Squid eaters, including dwarf and pygmy killer whale, Risso’s dolphin and Cuvier’s beaked whale occur most frequently along the upper slope in areas outside of anticyclones.

As a result of the proposed a ctivities, 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 m ore susceptible to infection from natural or anthropogenic sources. Few lethal effects are expected from an accidental oil spill, chance collisions with service vessels and ingestion of plastic material.

The net results of any disturbance would depend on the size and percentage of the population affected, ecological importance of the disturbed area, environmental and biological parameters that influence an animal’s sensitivity to 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).Supplemental Exploration Plan Mississippi Canyon Block 705

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

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

addressed in BSEE NTL No. 2012

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

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

LLOG will conduct the proposed activities under EPA’s Region VI NPDES General Permit GMG290000 which authorizes the discharge of

cer tain 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.

In th e 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 countermea sures to minimize these potential impacts.

• Sea Turtles

Small numbers of turtles could be killed or injured by chance collision with service vessels or by eating indigestible trash, particularly plastic items accidentally lost from drilling rigs, producti on facilities and service vessels. Drilling rigs and project vessels produce noise that could disrupt normal behavior patterns and create some stress to sea turtles, making them more susceptible to disease. Accidental oil spill releases are potential thr eats which could have lethal effects on turtles. Contact and/or consumption of this released material could seriously affect individual sea turtles. Most OCS related impacts on sea turtles are expected to be sub

lethal. Chronic and/or avoidance of affec ted 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 ofSupplemental Exploration Plan Mississippi Canyon Block 705

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### certain effluents, subje ct 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 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”. 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 LLO G and the associated contractors obtain training on at least an annual basis to ensure personnel are aware of the reporting and operational requirements.

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

• Air Quality

The proposed activities are located ap proximately 53 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 Po tential)

There are no physical disturbances to the seafloor which could impact known or potential shipwreck sites, as the review of high resolution shallow hazards data indicate there are no known or potential shipwreck sites located within the survey are a. As such, LLOG does not anticipate any IPF’s as a result of the proposed activities.

• Prehistoric Archaeological Sites

There are no physical disturbances to the seafloor which could cause impacts to prehistoric archaeological sites, as the review of hi gh resolution shallow hazards data and supporting studies did not reflect the occurrence of prehistoric archaeological sites. As such LLOG does not anticipate any IPF’s as a result of the proposed activities.Supplemental Exploration Plan Mississippi Canyon Block 705

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### Vicinity of Offshore Location

• Essential Fis h Habitat

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

An Accidental oil spill that may occur as a result of the proposed activities has potential to cause some detrimental effect s 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 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 and activate source control and countermeasures to minimize these potential impacts.

• Marine and Pelagic Birds

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

contact with the released oil.

In the event of an unanticipated blowout 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 will implement the Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Public Health a nd Safety

There are no anticipated emissions, effluents, wastes sent to shore, and/or accidents from the proposed activities that could cause impacts to the public health safety. BOEM classified the proposed objective area as absent of hydrogen sulfide.Supplemental Exploration Plan Mississippi Canyon Block 705

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### Coastal and Onshore

• Beaches

As a result of the proposed activities, beaches may be adversely impacted by an accidental oil spill. However, due to the distance from shore ( approximately 5 3 miles), and the response capabilities that would be implemen ted, 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.

• 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 5 3 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 th ere 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 woul d immediately implement its Regional Oil Spill Response Plan and activate source control and countermeasures to minimize these potential impacts.

• Shore Birds and Coastal Nesting Birds

As a result of the proposed activities, shore birds and coastal nesting birds may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 5 3 miles) and the response capabilities that would be implemented, no significant adverse impacts are expected. Both historical spill dat a 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.Supplemental Exploration Plan Mississippi Canyon Block 705

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### In the event of an unanticipated blowou t, 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, coastal wildlife refuges may be adversely impacted by an accidental oil spill. However, due to the distance from shore (approximately 5 3 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 t he 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 Spi ll 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 dist ance from shore (approximately 5 3 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 EI A/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.

Other Resources Identified

LLOG has not identified any other environmental resources other than those

addressed above.Supplemental Exploration Plan Mississippi Canyon Block 705

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## C. Impacts of Proposed Activities

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



## D. Environmental Hazards

Mississippi Canyon Block 705 is not located within a geographic area impacted by strong environmental phenomena, other than potential hurricanes in the Gulf of

Mexico. The Gulf of Mexico may experience several hurricanes throughout the season which typically runs from June through November. A severe hurricane may impact the activities covered in this Plan. Such impacts may be damage to the drilling rig, the unanticipated release of hydrocarbons depending upon the current status of the well. Additionally, this block has the potential to be affected by the “Loop Current” which is a warm ocean current in the Gulf of Mexico that flows northward between Cuba and the Yucatan Peninsula, moves northward into the Gulf of Mexico, then loops east and south before exiting to the east through the Florida Straits. While the loop current is present approximately 95% of the time, it is most active in t he 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 personnel; and will comply with the requirements of NTL’s 2008-

G09 and 2009-G10.



## E. Alternatives

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



## F. Mitigation Measures

LLOG will not implement any mitigation measures to avoid, diminish or eliminate pote ntial 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 with the proposed activities. Therefore, a list of suc h entities is not being provided.Supplemental Exploration Plan Mississippi Canyon Block 705

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## H. Preparers

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

Kathy Gowland Regulatory Specialist 1001 Ochsner Boulevard, Suite 200 Covington, Louisiana 70433 985-801-4300 (Phone) kathygo@llog.com



## I. References

The following documents were utilized in preparing the Environmental Impact

Assessment:

Document Author Dated
Archerological Deep Tow Survey

Shallow Hazards Assessment , Benthic Communities Evaluation, and Archaeological Resource Survey Tesla Berger Geosciences, LLC 20 09

20 10

BOEMRE Environmental Impact Statement Report No.

2007

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

Title 30 CFR Part 250 Subpart B (250.216 / 250.221 /

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

NTL 2000

- G16 “Guidelines for General Lease Surety

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

NTL 2005

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

NTL 2006

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

NTL 2006

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

JOINT NTL 2012

- G02 “Implementation of seismic Survey Mitigation Measures and Protected Species Observer Program” Bureau of Oce an Energy Management, Regulation, and Enforcement 2012

BSEE NTL 2012

- G01 “Marine Trash & Debris Awareness

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

JOINT NTL 2012

- G01 “Vessel Strike Avoidance and Injured/Dead Prot ective Species” Bureau of Ocean Energy Management, Regulation, and Enforcement 2012

NTL 2008

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

Documents” Bureau of Ocean Energy Management, Regulation, and Enforcem ent 2008

NTL 2008

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

NTL 2008

- G06 “Remotely Operated Vehicle Surveys in Deepwater” Bureau of Ocean En ergy Management, Regulation, and Enforcement 2008

NTL 2008

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

NTL 2008

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

NTL 2009

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

NTL 2009

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

NTL 2009

- G29 “Implementation Plan for Transition from

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

NTL 2009

- G31 “Hydrogen Sulphide” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009Supplemental Exploration Plan Mississippi Canyon Block 705

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

NTL 2009

- G38 “Drilling Wind ows, Eastern Gulf of

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

NTL 2009

- G39 “Biologically

- Sensitive Underwater

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

NTL 2009

- G40 “Deepwat er Benthic Communities” Bureau of Ocean Energy Management, Regulation, and Enforcement 2009

NTL 2009

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

NTL 2010

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

NTL 2010

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

NPDES General Permit GMG290000 EPA

– Region VI 20 12 Regional Oil Spill Response Plan LLOG Exploration Offshore, L.L.C. 201 2Supplemental Exploration Plan Mississippi Canyon Block 705

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## APPENDIX Q

ADMINISTRATIVE INFORMATION (30 CFR Part 250.228 and 250.262)

A. Exempted Information Description (Publi c Information Copies only)

Excluded from the Public Information copies are the following:

• Proposed bottom hole location information

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

• Production Rates and Life of Reserves

• New and Unusual Techno logies

• Geological and Geophysical Attachments



## B. Bibliography

The following documents were utilized in preparing this Plan:

Document Author Dated

Archerological Deep Tow Survey

Shallow Hazards Assessment , Benthic Communities Evaluation, and Archaeological Resource Survey Tesla Berger Geosciences, LLC 20 09

20 10

BOEMRE Environmental Impact Statement Report

– No.

2007

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

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