UNITED STATES GOVERNMENT MEMORANDUM

To: Public Information (MS 5030)

Plans Section, Office of Field Operations (MS 5231)

Public Information copy of Exploration Plan Control # - N-09667
Type - Initial Exploration Plan
Lease(s) - OCS-G22367 Block - 736 Keathley Canyon Area OCS-G25801 Block - 692 Keathley Canyon Area Operator - Chevron U.S.A. Inc. Subsea Wells A, B, C, D, E, and F

DRILLSHIP

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.

Michelle Griffitt Plan Coordinator Description - Rig Type - Subject: From: November 5, 2012

## PUBLIC INFORMATION INITIAL EXPLORATION PLAN

CHEVRON U.S.A. INC.
KEATHLEY CANYON BLOCK 692

OCS

- G 25801

OFFSHORE LOUISIANA

“ MOCCASIN ” PROSPECT

RECORD CHANGE LOG Submission Type Date Received Document Type Page Number (s)

Initial 9/18/2012 Initial Exploration Plan 1

- 194 Amended 9/27/2012 Oil Spills Information Section : Updated date of submittal of biannual Regional OSRP Environmental Mitigation Measures Section : Corrected NTL number s referenced under Incidental Takes 88

114September 14, 2012 

# PUBLIC INFORMATION INITIAL EXPLORATION PLAN

CHEVRON U.S.A. INC.
KEATHLEY CANYON BLOCK 692

OCS

- G 25801

OFFSHORE LOUISIANA

“ MOCCASIN ” PROSPECT

SECTION A PLAN CONTENTS SECTION B GENERAL INFORMATION SECTION C GEOLOGI CAL AND GEOPHYSICAL INFORMATION SECTION D HYDROGEN SULFIDE (H 2 

## S) INFORMATION SECTION E BIOLOGICAL, PHYSICAL, AND SOCIOECONOMIC INFORMATION SECTION F WASTE AND DISCHARGE INFORMATION SECTION G AIR EMISSIONS INFORMATION SECTION H OIL SPILLS INFORMATION SECTION I ENVIRONMENTAL MONITORING INFORMATION SECTION J LEASE STIPULATIONS INFORMATION SECTION K ENVIRONMENTAL MITIGATION MEASURES INFORMATION SECTION L SUPPORT VESSELS AND AIRCRAFT INFORMATION SECTION M ONSHORE SUPPORT FACILITIES INFORMATION SECTION N COASTAL ZONE MANAGEMENT ACT (CZMA) INFORMATION SECTION O ENVIRONMENTAL IMPACT ANALYSIS (EIA) SECTION P ADMINISTRATIVE INFORMATION

APPENDIX A ENVIRONMENTAL IMPACT ANALYSIS APPENDIX B SUPPLEMENTAL WORST CASE DISCHARGE INFORMATION

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information 

## SECTION A PLAN CONTENT S

(a) PLAN INFORMATION FORM Included as attachment A

- 1 at the end of this section is Form BOEM -0

137 “OCS Plan Information Form”. Chevron U.S.A. Inc (Chevron) is the designated operator of this lease. Chevron plans to use a Subsea BOP in the drilling of the wells proposed in this plan.
This Initial EP ( EP) de scribes the proposed activities for Keathley Canyon Block 692

. Proposed Schedule Proposed Activity Estimated Start Date Estimated End Date Estimated No. of Days Drill, complete, test and abandon well KC 692 A 04/01/2013 08/28/2013 150 Drill, complete, test and abandon well KC 692 B 08/29/2013 01/25/2014 150 Drill, complete, test and abandon well KC 692 C 01/26/2014 06/24/2014 150 Drill, complete, test and abandon well KC 692 D 06/25/2014 11/21/2014 150 Drill, complete, test and abandon well KC 692 E 11/22/2014 04/20/2015 150 Drill, complete, test and abandon well KC 692 F 04/21/2015 09/17/2015 150

(b) LOCATION / BATHYMETRY MAP Included as attachment A-2 are location/bathy metry map s at a scale of 1”=2
, 000’
, showing the surface locations for the proposed wells

. (c) SAFETY and POLLUTION PREVENTION FEATURES Chevron plans to use a dynamically positioned drillship to drill and complete the wells proposed in this plan. The wel ls will be drilled using a Subsea B OP system

. Rig specifications will be provided with the Applications for Permit to Drill. If another rig type is used, any differences regarding air emissions, safety, drilling or pollution control equipment will be addressed in a revised Exploration Plan.
In accordance with 30 CFR 250.406, safety features will include well control, pollution prevention, welding procedure, and blowout prevention equipment and as further clarified by B ureau of Ocean Energy Management ( BOEM ) Notices to Lessees (NTL’s) and current policy making invoked by the BOEM

. The rig will be monitored daily by a Chevron drilling representative and any waste or fuel resulting in pollution of the Gulf w aters will be reported to the representative in charge for immediate isolation and correction of the problem. Any spill will be reported to governmental agencies. Chevron will comply with all BOEM Regulations during the course of the activities.
The rig is equipped with safety, fire fighting

, and lifesav ing equipment requi red for compliance with USCG, ABS, SOLAS

, and IMO code requirements

. Chevron will comply with all pertinent regulations in 30 CFR 250.203, NTL’s, and all applicable federal and state requirements . Chevron will maintain compliance with the EPA NPDES Permit and lease agreement during these proposed activities.

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information (d) TABLE of STORAGE TANKS and PRODUCTION VESSELS Information regarding the storage tanks that will be used to conduct the proposed activities in this plan that will store oil, as defined at 30 CFR 254.6

, is provided in the table below. Only those tanks with a capacity of 25 barrels or more are included.

Storage Tank Facility Type Tank Capacity (bbls) Tanks (no.) Total Capacity (bbls) Fluid Gravity (API) Main Fuel OilDrillship 18,000 2 36,000No. 2 diesel Diesel Settling 837 2 1
, 674 Diesel Day 837 2 1
, 674 Emergency Diesel 100 1 100 Diesel Overflow 823 1 823 Diesel Oil Drain Aft 42 1 42 Engine Oil Storage 182 1 182 26.2 Gear Oil Aft 62 1 62 27 Gear Oil Fwd 176 1 176 27 Hydraulic Oil Aft 84 1 84 31 Hydraulic Oil Fwd 87 1 87 31

(f) MEASURES to PREVENT DISCHARGE of OILS and GREASES DURING RAINFALL and ROUTINE O PERATIONS The drillship is equipped with a comprehensive network of piping, drains and scuppers to minimize the risk that no pollutants are discharged into the marine environment.
All drains and drain material are collected in various holding tanks and located in the ship and then processed by the oily water separator systems. Clean water, either from the hazardous or nonhazardous sources, may be directed overboard according to regulatory requirements if the effluent discharge is within the environmental limits. Any remaining sludge and oil are directed to the necessary holding tanks for proper disposal according to regulatory requirements.
(g) ADDITIONAL SAFETY, POLLUTION PREVENTION, and EARLY SPILL DETECTION MEASURES BEYOND THOSE REQUIRED IN 30 CFR 250
In addition to pollution prevention measures utilized by Chevron, the drill ship has a comprehensive, proactive plan to address emergency situations that could result in an unanticipated oil/chemical release. The “Shipboard Oil Pollution Emergency Plan” has specific checklists and procedures to address accidental releases due to fuel/oil transfer, tank
o

verflow, hull leakage, fire, explosion, collision and grounding. This plan is reviewed annually and oil pollution prevention drills are conducted as specified by MARPOL regulations. There is a fully stocked environmental equipment locker located on the main deck, forward of the Moon

- pool and numerous spill kits located throughout the main deck. The decks of the drillship are fully contained, a comprehensive scupper management plan in place, and any spills on the deck would be immediately cleaned up using absorbents or permitted solvents

. ATTACHMENTS TO SECTION A

**•** A-1- Form BOEM -0

137 “OCS Plan Information Form ”

**•** A-2- Location/Bathymetry Plat s, Scale: 1”=2
, 000’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) Development 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 deepwater 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 Other (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) Diameter (Inches) Length (Feet)

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 1 of 4 X

Chevron U.S.A. Inc. 00078 Philip Von Dullen
1500 Louisiana Street 832-854-3644 Houston, Texas 77002 pvondullen@chevron.com 

### $17,200 

### 25UAB6K

OCS G-25801 KC 692 Moccasin
X X Leeville, LA
KC 692 A 20,790,700 bbls 32.4
209 127,083 bopd
X

X
X
X

04/01/2013 09/17/2015 900

XOCS 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 renaming well or structure, reference previous name): Previously reviewed under an approved EP or DOCD? Yes No

Is this an existing well or structure? Yes No If this is an existing well or structure, list the Complex ID or API No. Do you plan to use a subsea BOP or a surface BOP on a floating facility to conduct your proposed activities? Yes No

WCD info For wells, volume of uncontrolled blowout (Bbls/day): For structures, volume of all storage and pipelines (Bbls): API Gravity of fluid Surface Location Bottom-Hole Location (For Wells) Completion (For multiple completions, enter separate lines) Lease No. OCS OCS OCS OCS Area Name

Block No.

Blockline Departures (in feet) N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ LLambert XY coordinates X: X: X: X: X: Y: Y: Y: Y: Y: Latitude/ Longitude Latitude Latitude Latitude Latitude Latitude Longitude Longitude Longitude Longitude Longitude Water Depth (Feet): MD (Feet): TVD (Feet):

Anchor Radius (if applicable) in feet: MD (Feet): MD (Feet): MD (Feet): TVD (Feet): TVD (Feet): TVD (Feet):
Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)
Anchor Name or No. Area Block X Coordinate Y Coordinate Length of Anchor Chain on Seafloor

X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 2 of 4 KC 692 A (KC 736 A3) 

## X

X X

32.4

G-22367 

### KC
736

N 

## 1242

E 

## 7035



# 1846245

9534438

N 26 16' 29.1941"

W 92 22' 18.0157"

7044 

## NA 127,083OCS PLAN INFORMATION FORM ( CONTINUED ) 

### Provide the following information for the well with the highest Worst Case Discharge volume:

Worst Case Discharge (WCD) Well Information WCD Well Name Surface Lease Surface Area/Block Bottom Lease Bottom Area/Block Product Type MD TVD

Analog Well(s) Area/Block OCS Lease Well No. API No.



### Geologic Data for WCD

Open Hole Interval for WCD Top (TVD in feet) Base (TVD in feet)

Sand 1 Sand 2 Sand 3 Sand 4 Sand 5 Formation Data Sand Name Estimated Top TVD Estimated Base TVD Estimated Net Sand Height MD (Net Pay if hydrocarbon) Estimated Net Sand Height TVT (Net Pay if hydrocarbon) Fluid Type Used in WCD? (Yes/No)
Seismic Survey Used



### Engineering Data for WCD

WCD Engineering Items WCD (STB/Day) WCD Calculated at Mudline Yes No Atmosphere Yes No Flow Correlation Outlet Pressure (Psia) Gas Turbulence Factor Software Model Used

Sand 1 Sand 2 Sand 3 Sand 4 Sand 5 Formation Data Sand Name Permeability (mD) Initial Pressure (PSIA)

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 3 of 4 127,083

x xOCS PLAN INFORMATION FORM ( CONTINUED ) Sand 1 Sand 2 Sand 3 Sand 4 Sand 5 Formation Data Reservoir Temperature (F) Porosity (0.00) Water Saturation (0.00) Rock Compressibility (microsips) Water Salinity (ppm) Drive Mechanism Drainage Area (acres) Oil Reservoir Data Bubble Point Pressure (PSIA) Initial Bo (RB/STB) Bo (RB/STB) @ Bubble Point Rsi (SCF/STB) Initial Oil Viscosity (Cp) Oil Viscosity (CP) @ Bubble Point Oil Compressibility (1/PSIA) Oil API Gravity (API) Specific Gas Gravity (0.00) Gas Reservoir Data Condensate API Gravity (API) Specific Gas Gravity (0.00) Yield (STB/MMCF)
Source of Permeability Used Permeability from MDT Permeability from Core Analysis Percussion core Rotary sidewall core Conventional core
Pressure Transient Analysis Permeability from CMR or NMR log analysis Permeability from other source
Provide Model Input Values for Relative Permeability: Residual Oil to Gas fraction (=1-Slc-Swc) Residual Oil to Water fraction (=Soc) Critical Gas fraction (Sgc, Gas/Oil-Water Systems) Residual Gas to Water fraction (Sgc, Gas/Gas-Water Systems) Kro Oil Curve Endpoint (fraction of absolute permeability) Krg Gas Curve Endpoint (fraction of absolute permeability) Krw Water Curve Endpoint (fraction of absolute permeability)

Paperwork Reduction Act of 1995 Statement: The Paperwork Reduction Act of 1995 (44 U.S.C. 2501 et seq .) requires us to inform you that BOEM collects this information as part of an applicant’s Explorati on Plan or Development Operations Coordination Document submitted for BOEM approval. We u se the information to facilitate our review and data entry for OCS plans. We will protect proprietary data according to the Freedom of Information Act and 30 CFR 550.197. An agency may not conduct or sponsor, and a person is not required to respond to, a collec tion of information unless it displays a currently vali d Office of Management and Budget Control Number. Responses are ma ndatory (43 U.S.C. 1334). The public reporting burden for this form is included in the burden for preparing Exploration Plans and Development Operations Coordi nation Documents. We estimate that burden to average 600 hours with an accompanying EP, or 700 hours with an accompanying DPP or DOCD, including the time for reviewing instructions, gath ering and maintaining data, and comple ting and reviewing the forms associated with subpart B. Direct comments regarding the burden estimate or any other aspect of this form to the Information Collection Cleara nce Officer, Bureau of Ocean Energy Management, 381 Elden Street, Herndon, VA 20170.

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 4 of 4OCS 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 renaming well or structure, reference previous name): Previously reviewed under an approved EP or DOCD? Yes No

Is this an existing well or structure? Yes No If this is an existing well or structure, list the Complex ID or API No. Do you plan to use a subsea BOP or a surface BOP on a floating facility to conduct your proposed activities? Yes No

WCD info For wells, volume of uncontrolled blowout (Bbls/day): For structures, volume of all storage and pipelines (Bbls): API Gravity of fluid Surface Location Bottom-Hole Location (For Wells) Completion (For multiple completions, enter separate lines) Lease No. OCS OCS OCS OCS Area Name

Block No.

Blockline Departures (in feet) N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ LLambert XY coordinates X: X: X: X: X: Y: Y: Y: Y: Y: Latitude/ Longitude Latitude Latitude Latitude Latitude Latitude Longitude Longitude Longitude Longitude Longitude Water Depth (Feet): MD (Feet): TVD (Feet):

Anchor Radius (if applicable) in feet: MD (Feet): MD (Feet): MD (Feet): TVD (Feet): TVD (Feet): TVD (Feet):
Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)
Anchor Name or No. Area Block X Coordinate Y Coordinate Length of Anchor Chain on Seafloor

X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 2 of 4 KC 692 B 

## X

X X

G-25801 

### KC
692

S 

## 4825

E 

## 3976



# 1849304

9540505

N 26 17' 29.1560"

W 92 21' 44.0713"

7125 

## NAOCS 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 renaming well or structure, reference previous name): Previously reviewed under an approved EP or DOCD? Yes No

Is this an existing well or structure? Yes No If this is an existing well or structure, list the Complex ID or API No. Do you plan to use a subsea BOP or a surface BOP on a floating facility to conduct your proposed activities? Yes No

WCD info For wells, volume of uncontrolled blowout (Bbls/day): For structures, volume of all storage and pipelines (Bbls): API Gravity of fluid Surface Location Bottom-Hole Location (For Wells) Completion (For multiple completions, enter separate lines) Lease No. OCS OCS OCS OCS Area Name

Block No.

Blockline Departures (in feet) N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ LLambert XY coordinates X: X: X: X: X: Y: Y: Y: Y: Y: Latitude/ Longitude Latitude Latitude Latitude Latitude Latitude Longitude Longitude Longitude Longitude Longitude Water Depth (Feet): MD (Feet): TVD (Feet):

Anchor Radius (if applicable) in feet: MD (Feet): MD (Feet): MD (Feet): TVD (Feet): TVD (Feet): TVD (Feet):
Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)
Anchor Name or No. Area Block X Coordinate Y Coordinate Length of Anchor Chain on Seafloor

X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 2 of 4 KC 692 C 

## X

X X

G-25801 

### KC
692

S 

## 5976

E 

## 7333



# 1845947

9541656

N 26 17' 40.7224"

W 92 22' 20.9057"

6710 

## NAOCS 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 renaming well or structure, reference previous name): Previously reviewed under an approved EP or DOCD? Yes No

Is this an existing well or structure? Yes No If this is an existing well or structure, list the Complex ID or API No. Do you plan to use a subsea BOP or a surface BOP on a floating facility to conduct your proposed activities? Yes No

WCD info For wells, volume of uncontrolled blowout (Bbls/day): For structures, volume of all storage and pipelines (Bbls): API Gravity of fluid Surface Location Bottom-Hole Location (For Wells) Completion (For multiple completions, enter separate lines) Lease No. OCS OCS OCS OCS Area Name

Block No.

Blockline Departures (in feet) N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ LLambert XY coordinates X: X: X: X: X: Y: Y: Y: Y: Y: Latitude/ Longitude Latitude Latitude Latitude Latitude Latitude Longitude Longitude Longitude Longitude Longitude Water Depth (Feet): MD (Feet): TVD (Feet):

Anchor Radius (if applicable) in feet: MD (Feet): MD (Feet): MD (Feet): TVD (Feet): TVD (Feet): TVD (Feet):
Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)
Anchor Name or No. Area Block X Coordinate Y Coordinate Length of Anchor Chain on Seafloor

X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 2 of 4 KC 692 D 

## X

X X

G-25801 

### KC
692

S 

## 3896

E 

## 5237



# 1848043

9539576

N 26 17' 20.0131"

W 92 21' 57.9806"

6848 

## NAOCS 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 renaming well or structure, reference previous name): Previously reviewed under an approved EP or DOCD? Yes No

Is this an existing well or structure? Yes No If this is an existing well or structure, list the Complex ID or API No. Do you plan to use a subsea BOP or a surface BOP on a floating facility to conduct your proposed activities? Yes No

WCD info For wells, volume of uncontrolled blowout (Bbls/day): For structures, volume of all storage and pipelines (Bbls): API Gravity of fluid Surface Location Bottom-Hole Location (For Wells) Completion (For multiple completions, enter separate lines) Lease No. OCS OCS OCS OCS Area Name

Block No.

Blockline Departures (in feet) N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ LLambert XY coordinates X: X: X: X: X: Y: Y: Y: Y: Y: Latitude/ Longitude Latitude Latitude Latitude Latitude Latitude Longitude Longitude Longitude Longitude Longitude Water Depth (Feet): MD (Feet): TVD (Feet):

Anchor Radius (if applicable) in feet: MD (Feet): MD (Feet): MD (Feet): TVD (Feet): TVD (Feet): TVD (Feet):
Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)
Anchor Name or No. Area Block X Coordinate Y Coordinate Length of Anchor Chain on Seafloor

X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 2 of 4 KC 692 E 

## X

X X

G-25801 

### KC
692

S 

## 3475

E 

## 2868



# 1850412

9539155

N 26 17' 15.7263"

W 92 21' 31.9672"

7251 

## NAOCS 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 renaming well or structure, reference previous name): Previously reviewed under an approved EP or DOCD? Yes No

Is this an existing well or structure? Yes No If this is an existing well or structure, list the Complex ID or API No. Do you plan to use a subsea BOP or a surface BOP on a floating facility to conduct your proposed activities? Yes No

WCD info For wells, volume of uncontrolled blowout (Bbls/day): For structures, volume of all storage and pipelines (Bbls): API Gravity of fluid Surface Location Bottom-Hole Location (For Wells) Completion (For multiple completions, enter separate lines) Lease No. OCS OCS OCS OCS Area Name

Block No.

Blockline Departures (in feet) N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L N/S Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ L E/W Departure: F____ LLambert XY coordinates X: X: X: X: X: Y: Y: Y: Y: Y: Latitude/ Longitude Latitude Latitude Latitude Latitude Latitude Longitude Longitude Longitude Longitude Longitude Water Depth (Feet): MD (Feet): TVD (Feet):

Anchor Radius (if applicable) in feet: MD (Feet): MD (Feet): MD (Feet): TVD (Feet): TVD (Feet): TVD (Feet):
Anchor Locations for Drilling Rig or Construction Barge ( If anchor radius supplied above, not necessary)
Anchor Name or No. Area Block X Coordinate Y Coordinate Length of Anchor Chain on Seafloor

X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =
X = Y =

Form BOEM- 0137 (December 2011

- Supersedes all previous editions of this form which may not be used.) Page 2 of 4 KC 692 F 

## X

X X

G-25801 

### KC
692

S 

## 2400

E 

## 1978



# 1851302

9538080

N 26 17' 05.0317"

W 92 21' 22.2446"

7386 

## NAX Y Latitude Longitude

KC 736 A3 1838108 9529644 N 26 ° 15’ 42.0797” W 92 ° 23’ 47.6801” 6036 FNL 668 FWL Block Calls (ft) Well Designation and Block Cartesian Coordinates

UTM Zone 15 (ft) Geographic Coordinates

C1866, NAD 1927 (deg., min., sec.)X Y Latitude Longitude KC 692 B 1849304 9540505 N 26 ° 17’ 29.1560” W 92 ° 21’ 44.0713” 4825 FSL 3976 FEL KC 692 C 1845947 9541656 N 26° 17’ 40.7224” W 92° 22’ 20.9057” 5976 FSL 7333 FEL KC 692 D 1848043 9539576 N 26 ° 17’ 20.0131” W 92 ° 21’ 57.9806” 3896 FSL 5237 FEL KC 692 E 1850412 9539155 N 26 ° 17’ 15.7263” W 92 ° 21’ 31.9672” 3475 FSL 2868 FEL KC 692 F 1851302 9538080 N 26 ° 17’ 05.0317” W 92 ° 21’ 22.2446” 2400 FSL 1978 FEL Block Calls (ft) Well Designation and Block Cartesian Coordinates

UTM Zone 15 (ft) Geographic Coordinates

C1866, NAD 1927 (deg., min., sec.)

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information 

## SECTION B GENERAL INFORMATION

(a) APPLICATIONS AND PERMITS In the table below, information is provided on the filing or approval status of the Federal, State, and local application approvals or permits that must be obtained to conduct the proposed activities. Only those individual or site

- specific application approvals that must be obtained are listed.
Application/Permit Issuing Agency Status NPDES Permit EPA Approved EEP U.S. Coast Guard To be submitted APD B SEE To be submitted

(b) DRILLING FLUIDS (1) Information on the types (including chemical constituents) and amounts of the drilling fluids planned for use in drilling the proposed wells:

Type of Drilling Fluid Est. Volume of Drilling Fluid (bbls/well) Water based (seawater, brine, freshwater) 101,697 Synthetic based (internal olefin, ester) 21,000 Oil based (diesel, mineral oil) 0
(2) Major Components of Synthetic

- based drilling fluid listed above:

Product Name Amount to be Used Reference Number MSDS No. Lime (Calcium Hydroxide) 2,700 50

- lb bags CAS # 1302

- 78

- 9 10046 Calcium Chloride 26,200 50

- lb bags CAS # 10043

- 52

- 4 10109 VG Plus 1,000 50

- lb bags CAS # 68153

- 30

- 0 10128 VG Supreme 500 50

- lb bags CAS # 14808

- 60

- 7 12207 Rheflat 7,000 gals CAS # 68855

- 60

- 7 12246 Rhethik 4,000 gals CAS # 111

- 46

- 6 12247 Rheduce 1,500 gals 12248 Suremul 32,000 gals CAS#111

- 76

- 2,112

- 34

- 5 12243 Surewet 11,000 gals CAS # 112

- 80

- 1 12245 M

- I BAR 4,500 tons CAS # 7727

- 43

- 7 10617 Synthetic B 15,700 bbls 12269 G Seal Plus 2,000 50

- lb bags CAS # 7782

- 42

- 5 10391 Safe Carb 8,000 50

- lb bags CAS # 471

- 34

- 1 10337

(e) NEW OR UNUSUAL TECHNOLOGY No new or unusual technology will be used to carry out the activities proposed in this plan.

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information (f) BONDING STATEMENT The bond requirements for the activities and facilities proposed in this EP 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 a current B OEM

- approved deferment from providing additional security under 30 CFR 256.53(d) and National NTL No. 2003

- N06, “Supplemental Bond Procedures. If, any point, Chevron no longer qualifies for a supplemental bonding deferment, Chevron will either provide the required additional security or a third party guarantee within 60 days after such disqualification.
(g) OIL SPILL FINANCIAL RESPONSIBILITY (OSFR) Chevron U.S.A. Inc., BOEM company number 00078, has demonstrated oil spill financial responsibility for the facilities proposed in this EP according to 30 CFR part 253, and NTL No. 99

- N01, “Guidelines for Oil Spill Financial Responsibility for Covered Facilities.”
(h) DEEPWATER W ELL CONTROL STATEMENT Chevron U.S.A. Inc., BOEM company number 00078, has the financial capability to drill a relief well and conduct other emergency well control operations.
(j) BLOWOUT SCENARIO The KC 692 “A” (

KC 692 002ST01) proposed location was chosen as the representative well for the Worst Case Discharge (WCD) scenario. The initial Open Flow Potential Rate has been calculated with Systems Analysis using the Prosper nodal software package from Petroleum Experts, Ltd. Single layer, multi

- layer and transient models have been investigated. With the assumptions described below, Systems Analysis indicates that an uncontrolled blowout in the 10

- 5/8” open hole section will lead to a maximum Worst Case Discharge scenario initial flow rate of 127,083 Barrels Oil Per Day (BOPD). This rate is based on transient analysis and does not include the effects of heavy fluid unloading or filter cake cleanup. Assuming a 500 acre drainage volume, the production rate would gradually decline and stabilize in about 50 days at 110,500 BOPD

Chevron estimates that it would take ten (10) days to acquire and demobilize a rig, four (4) day s to move the rig onsite, and 161 days to drill the relief well, intersect the blowout well, and conduct a kill operation for a total of 175 day s. Modeling indicates that the blowout well could sustain the stabilized rate until a relief well could be drilled. Production decline due to reservoir depletion and sand bridging are assumed not to occur. The reservoir rock would appear to have enough compressive strength to support a high draw down pressure, at least under initial pressure conditions. Using the rate profile resulting from these assumptions, the Total Potential Spill Volume is estimated at 20,790,700 bbls

. Discussion of Potential for Well to Bridge Over: Although it is highly likely that some sand would be produced under a blowout scenario, Chevron expects that the amount of sand is small enough to be lifted to the seafloor without bridging

.

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information Relief Well
Chevron plans to drill the wells proposed in this plan with a dynamically positioned drillship. Chevron also plans to have at least two other dynamically positioned drillships under contract that could drill the relief well, if needed. These drillships do not have any equipment constraints with respect to drilling a relief well for the Moccasin project. A point just below the 11

- 7/8” casing shoe is selected as the intervention point for the relief well. Chevron estimates that it would take ten (10) days to acquire and demobilize a rig, four (4) days to move the rig onsite, and 161 days to drill the relief well, intersect the blowout well, and conduct a kill operation for a total of 175 days. This estimate includes NPT time and a 30% contingency factor.

The re are no platforms or other infrastructure nearby that would hamper relief well operations. Site surveys have been conducted near the current drilling location to identify surface hazards that might impact the selection of a relief well location. Two locations have been selected for relief well within a 2,500’ radius – one on the southeast side and one on the east side. Selection of the actual location would be constrained by typical parameters such as planned inclination, benign water

- bottom and salt entry/exit points, wind and current direction and subsurface hazard avoidance. Directional plans for the relief wells will be simple build and hold with less than an ~40 degree hole angle. Casing design for the selected relief well will be similar to that proposed for the Moccasin Appraisal well.

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information Relief Well Plan:
Proprietary Information

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information Other Blowout Contingency Planning In order for Chevron to address its ability to prevent blowouts, reduce the likelihood of blowouts, and conduct effective/early intervention in the event of a blowout, Chevron has developed standards for well control, personnel safety, and emergency response plans. Chevron has also entered into agreements with industry Subject Matter Experts (SME). At all times from planning through execution, Chevron takes the necessary steps to maintain primary well control to prevent the occurrence of blowouts as outlined in the Chevron Well Control Guide. The drilling team works in conjunction with the geological and geophysical operations te am and the exploration project team to use their knowledge and good judgment to create best possible well plans and program for any particular prospect. All relevant geological information is used to understand the risks and uncertainties that are unique to the location. Appropriate plans are then generated to eliminate or mitigate the identified risks. Special equipment for contingency plans is sourced and qualified personnel are identified for conducting the various tasks. Prior to the execution phase, all the well control equipment on the rig undergoes a rigorous inspection and acceptance process/procedure by the Chevron Global Well Intervention group. To reduce the likelihood of a blowout, appropriate offset information is used to generate pore pres sure models that predict localized area pore pressure. Maximum Anticipated Surface Pressure (MASP) is calculated to ensure that the working pressure of the BOP equipment is not exceeded at any time during well construction. Pressure While Drilling (PWD) an d Log While Drilling (LWD) data, such as gamma ray, resistivity, sonic, are used during the drilling operation to monitor real time pore pressure variances. Adjustments can then be made to the mud system to maintain the appropriate overbalance on the pore pressure. Mud tank volumes and trip tank volumes are constantly monitored while drilling for early detection of changes in anticipated trends. Routine maintenance and testing of blowout prevention equipment helps to ensure the equipment is in good working condition during operations. Data sheets and critical wellbore information which are needed in well control situations are maintained at the well site. There shall be two (2) barriers available during all normal well activities, operations, suspensions, and abandonments to prevent uncontrolled flow from the wellbore to the environment. Prior to removing the Blowout Preventer (BOP) from a well which has hydrocarbons, there will be two mechanical barriers in place. Preliminary plans are developed for potential relief well locations(s) during the planning phase for the primary well(s). These preliminary plans can be used to develop detailed relief well drilling plans as needed in a timely manner. Two relief well locations have been identified for the primary well location. In addition to Chevron’s contracted resources to assist in the event of a blowout, Chevron is a founding member of the Marine Well Containment Company (“MWCC”), currently has access to MWCC’s Interim Containment Response System (“ICRS”), and will have full access to MWCC’s Expanded Containment Response System when it is available. These resources, along with Chevron’s own well containment and emergency response planning, give Chevron a high probability of regaining control of a blown out well. Chevron maintains the “Chevron Interim Well Containment Plan (0128

- OFGN

- RGL

- PLN

- DGM

- 0000

- 00001)” which guides Chevron’s procedures and plans for well containment until the expanded Marine Well Containment System is in place. Additional details for each component of well containment planning can be found in the Chevron Interim Well Containment Plan (“IWCP”), which is available upon request.
Sup plemental Worst Case Discharge I nformation to comply with NTL No. 2010

- N06 is included as Appen dix B in the confidential copy of this Plan.

### Chevron U.S.A. Inc. Initial Exploration Plan Keathley Canyon Block 692 Public Information 

## SECTION C GEOLOGICAL AND GEOPHYSICAL INFORMATION

(a) GEOLOGICAL DESCRIPTION Proprietary Information
(b) STRUCTURE CONTOUR MAPS Proprietary Information
(c) INTERPRETED 2

- D AND/OR 3

- D SEISMIC LINES Proprietary Information
(d) GEOLOGICAL STRUCTURE CROSS

- SECTION Proprietary Information
(e) SHALLOW HAZARDS REPORT Based on a review of CGG Veritas proprietary exploration 3

- D seismic data, a Geologic and Stratigraphic Assessment over Keathley Canyon Blocks 692, 693, 735, 736, and 780 was prepared by Geoscience Earth & Marine Services, Inc. ®, (GEMS) for Chevron U.S.A. Inc. (Chevron) in April 2009 (G EMS Report No. 0109

- 1600) . The proprietary report was submitted with the initial plan for KC 736

, plan number N- 9380.
(f) SHALLOW HAZARDS ASSESSMENT S ite specific shallow hazard clearance letters for the proposed wellsites were prepared by GEMS complying with Notice to Lessees (NTL’s) 2008

- G05, and 2009

- G40. NTL 2008

- G06 is also pertinent with respect to pre - and post

spud ROV visual inspection surveys. The site specific clearance letter s are based on findings provided in the main body of the Geohazards report for Keathley Canyon Blocks 692, 693, 735, 736, and 780 (GEMS Report No. 0109

- 1600)

. The site clearance letters supplement the above hazard report with details pertaining directly to the proposed drill locations

. Two hard copies and t wo digi tal copies of the propri etary Site Clearance Le tters for proposed Wellsites KC 692 A, B, C, D, E, and F are being submitted as an enclosure with this plan. The site clearance letters were prepared in July 2012

, GEMS Project Number 0412

- 2080

. A copy of the site specific shallow hazard site clearance letters from the GEMS report s for the proposed well locations is included belo w:**10615 Shadow Wood Drive Suite 200**  **Houston, Texas 77043 (713) 468-1410 (o)**  **(713) 468-1438 (f)** www.gemsinc.com

**Geoscience Earth & Marine Services, Inc. ®** // 1 FORUM ENERGY TECHNOLOGIES, INC. **August 8, 2012 Project No. 0412-2080** 
**C hevron U.S.A. Inc.**  **1500 Louisiana Room 5717F**  **Houston, Texas 77002 Attention: Mr. Philip Von Dullen III**  

### Site Clearance Letter

Proposed Wellsite KC 736-A3 (KC 692-A) Block 692 (OCS G

**-** 22367) Keathley Canyon Area, Gulf of Mexico

**Chevron U.S.A. Inc., (Chevron) plans to drill an exploration well in Block 736 of the Keathley Canyon (KC) Area, Gulf of Mexico. This letter addresses specific seafloor and subsurface geologic conditions to the**  **possible Top of Salt, approximately 1,157 ft below the mudline (bml), at the Proposed Exploration Wellsite KC 736-A3. The following discussion is based on findings provided within the main body of the geohazards**  **report for Blocks KC 692, 693, 735, 736, and 780 (GEMS Report No. 0109-1600; GEMS, 2009) and within the archaeological investigation report for Well KC 736-A3 (GEMS Report No. 0311-1908; GEMS, 2011).**  **The surface location of the proposed KC 736-A3 wellsite lies in the northern portion of KC 736. Chevron provided the following coordinates:**  

### Proposed Exploration Wellsite KC 736-A3 Spheroid & Datum: Clarke 1866, NAD27 Projection: UTM Zone 15 North, U.S. ft Line Reference Block Calls

KC 736 **X: 1,846,245 Latitude: 26o 16' 29.194089" N Inline: 13980 5,035 ft FEL Y: 9,534,438 Longitude: 92o 22' 18.015648" W**  **Crossline: 5764 1,242 ft FNL**

**Chevron will drill this well using a dynamically positioned drilling vessel. Our assessment addresses the seafloor conditions within a 2,000-ft radius around the proposed wellsite location.** 

Attachments **The page-size maps and figures accompanying this letter have been extracted from the main report’s original maps and 3-D data volume and centered on the proposed well location.**  **Map KC736-A3-1: Bathymetry Map Map KC736-A3-2: Seafloor Rendering**  **Map KC736-A3-3: Seafloor Amplitude Rendering Map KC736-A3-4: Geologic Features Map**  **Figure KC736-A3-1: ROV Survey Benthic Area Figure KC736-A3-2: Portions of Inline 13980 and Crossline 5764 Showing Conditions Beneath** 

**Proposed Wellsite KC 736-A3 Figure KC736-A3-3: Tophole Prognosis Chart, Proposed Wellsite KC 736-A3, Keathley**  **Canyon Area, Block 736 Project No. 0412-2080** 

**Chevron U.S.A. Inc. //**  **August 8, 2012**

**Geoscience Earth & Marine Services, Inc. ®** // 2 FORUM ENERGY TECHNOLOGIES, INC. NTL Requirements **The following report complies with the Bureau of Ocean Energy Management (BOEM, formerly MMS) Notice to Lessees (NTLs) 2008-G05 and 2009-G40 (MMS, 2008a and 2010). The operator will be required** **to follow NTLs 2008-G04 and –G06 with respect to an ROV monitoring survey as well as pre- and post spud ROV visual inspection surveys (MMS, 2008b and 2008c).**  **The Federal lease block KC 736 is not considered archaeologically significant (BOEM, 2011); however, pursuant to the “Pre-Seabed Disturbance Survey Mitigation” released by the BOEMRE in March 2011**  **(BOEMRE, 2011), an archaeological assessment of the well location will be required before any bottom disturbing activities. See GEMS Report No. 0311-1908 (GEMS, 2011) for the archaeological assessment.**  Power Spectrum. **According to NTL 2008-G05 (MMS, 2008a), 3-D seismic reflection data may be used for shallow hazard assessments with approval from the BOEM, Gulf of Mexico Region. A power spectrum**  **analysis was conducted from the 3-D seismic data cube provided by Chevron to illustrate the data parameters. The power spectrum curve (below) was generated within a 500-ft radius of the intersection of**  **the inline and crossline at the proposed wellsite. We converted the amplitude vs. frequency spectrum, generated by the SMT software, to power vs. frequency by squaring the amplitude values as described by**  **J. A. Coffeen, 1978.**

Power Spectrum Analysis Curve, KC 736, Proposed Wellsite KC 736-A3 **The section of data between the seafloor and the Top of Salt is highly fractured and deformed as a result of the shallow salt mass at the proposed wellsite. The close proximity of the salt has likely contributed to**  **lower frequency content on the 3-D data.**
Man-Made Features **The KC 736 #1 well was drilled by Chevron in 2010 in the southern portion of KC 736, approximately 14,115 ft south-southwest of the proposed well location. There are no existing pipelines, cables, or**  **platforms within KC 736 or in the immediate surrounding blocks (BOEM, 2012). Project No. 0412-2080** 

**Chevron U.S.A. Inc. //**  **August 8, 2012**

**Geoscience Earth & Marine Services, Inc. ®** // 3 FORUM ENERGY TECHNOLOGIES, INC. Wellsite Conditions **The surface location is clear of any constraining conditions within a 2,000-radius circle from the proposed wellsite.**  Water Depth, Slope, and Seafloor Sediments. **Seafloor conditions are favorable for exploration drilling at the proposed wellsite location. The water depth at the proposed surface location is approximately -6,616 ft**  **(Map KC736-A3-1). The Proposed Wellsite KC 736-A3 lies along an expansive shallow salt ridge. The seafloor in this area is irregular as a result of the numerous fault scarps and the deformation of the shallow**  **overburden by the underlying salt (Map KC736-A3-2). The seafloor at the proposed wellsite is generally smooth, dipping to the northeast at about 10.9°; however, video captured from the ROV investigation**  **shows a smooth and gradually dipping seafloor. The near-surface sediments are expected to be normally consolidated clays forming a drape over the area.**  Deepwater Benthic Communities. **There is no indication of fluids or gas venting from nearby faults at the seabed. Features or areas that could support high-density deepwater benthic communities are not located**  **within 2,000 ft of the proposed location; however, scattered deepwater corals were noted in the ROV data near the KC 736-A3 survey location. These “branch-like” corals exist on soft substrate and are not**  **considered to be high-density benthic communities that are generally associated with hardgrounds (Figure KC736-A3-1). The Seafloor Amplitude Rendering (Map KC736-A3-3) shows normal or ambient amplitudes**  **along the seabed at, and near, the proposed wellsite.** Stratigraphy. **Stratigraphic conditions are shown on Figures KC736-A3-2 and KC736-A3-3. The seafloor and near-surface sediments at the Proposed Wellsite KC 736-A3 are expected to be hemipelagic and**  **pelagic clays and silty clays. In general, the sediments between the seafloor and the possible Top of Salt (1,157 ft bml or -7,773 ft bsl, below sea level) consist of hemipelagic clays and clay-rich turbidite deposits**  **interlayered in places with thin debris flow deposits. The sediments within the upper 1,157 ft bml (-7,773 ft bsl) likely consist primarily of clays and silts; however, thin sand seams may be interspersed within the**  **stratigraphic sequence below 215 ft bml (-6,831 ft bsl).**
Faults. **Several seafloor faults exist near the proposed location. A vertical borehole will intersect a seafloor fault at approximately 242 ft bml (-6,858 ft bsl), Figures KC736-A3-2 and KC736-A3-3. The fault**  **trends northwest to southeast and is downthrown to the northeast. Any further movement along this fault will likely be slow, analogous to a soil creep.**  **No other seafloor or buried faults are expected to be penetrated; however, the stratigraphic unit above the Top of Salt is likely to be highly fractured as a result of the motion of the shallow salt structure. Other faults**  **are likely to exist that are beyond the resolution of the data.**
Shallow Gas and Shallow Water Flow. **Significant shallow gas is not expected at this wellsite within the upper 1,157 ft of sediment (Figures KC736-A3-2 and KC736-A3-3). The potential for shallow water flow at**  **this well location is considered negligible (Figure KC736-A3-3).**
Shallow Gas. **The potential for encountering shallow gas at the Proposed Wellsite KC 736-A3 ranges from negligible to low. The well path will not penetrate any high-amplitude events between the seafloor and**  **the possible Top of Salt (1,157 ft bml), Map KC736-A3-4 and Figure KC736-A3-3. A low potential for encountering shallow gas exists from 215 ft bml to the possible Top of Salt (1,157 ft bml). An increase in**  **amplitude character in places may indicate an increase in minor amounts of solution gas within possible thin sand layers within this interval.** 
Shallow Water Flow **. There is a negligible potential for shallow water flow within the sedimentary section from the seafloor to the possible Top of Salt (1,157 ft bml), Figure KC736-A3-3. Any thin sand or**  **silty-sand layers encountered are not expected to be overpressured. Additionally, the potential for an overpressured environment is considerably reduced by faulting and the thin overburden above the shallow**  **salt. Project No. 0412-2080** 

**Chevron U.S.A. Inc. //**  **August 8, 2012**

**Geoscience Earth & Marine Services, Inc. ®** // 4 FORUM ENERGY TECHNOLOGIES, INC. Closing **The Proposed Wellsite KC 736-A3 in Keathley Canyon Block 736 appears suitable for exploration drilling operations. Thin sands may be encountered between 215 ft and 1,157 ft bml, but we do not anticipate any**  **significant overpressures associated with this interval. We appreciate the opportunity to be of service to Chevron on this project and look forward to working closely with you on other projects.**  **Sincerely,**

GEOSCIENCE EARTH & MARINE SERVICES, INC. ®

**Christopher J. Madere Daniel Lanier**  **Senior Geoscientist Vice President - Geoscience**

Attachments: **(4 Maps and 2 Figures)** Distribution: **Mr. Philip Von Dullen III, Chevron U.S.A. Inc., Houston, TX (2 Copies)**

References: **Bureau of Ocean Energy Management, 2011, Notice to lessees and operators of federal oil and gas leases and pipeline right-of-way holders on the outer continental shelf, revisions to the list of OCS lease blocks requiring**  **archaeological resource surveys and reports: U. S. Department of the Interior, Bureau of Ocean Energy Management, Bureau of Safety and Environmental Enforcement, Gulf of Mexico OCS Region, NTL 2011-JOINT-G01.**  **Bureau of Ocean Energy Management, 2012, ASCII data files, published on the BOEM Gulf of Mexico Region homepage, <http://www.gomr.boem.gov/homepg/pubinfo/freeasci/freedesc.html>, accessed August, 2012.**  **Bureau of Ocean Energy Management, Regulation, and Enforcement, 2011, Pre-seabed disturbance survey mitigation, released by BOEMRE in March 2011.**  **Coffeen, J. A., 1978, Seismic Exploration Fundamentals: Tulsa, the Petroleum Publishing Co., p. 125. GEMS, 2009, Geologic and stratigraphic assessment, blocks 692, 693, 735, 736, and 780, Keathley Canyon Area, Gulf**  **of Mexico, Geoscience Earth & Marine Services, Inc. ®**  **, Report No. 0109-1600. GEMS, 2011, Archaeological ROV Investigation, KC 736-A3 Well, Block 736, Keathley Canyon Area, Gulf of Mexico,**  **Geoscience Earth & Marine Services, Inc. ®**  **, Report No. 0311-1908. Minerals Management Service, 2008a, Notice to lessees and operators of federal oil, gas, and sulphur leases and**  **pipeline right-of-way holders in the outer continental shelf, Gulf of Mexico OCS region, Shallow hazards requirements: U. S. Department of the Interior, Minerals Management Service, Gulf of Mexico, NTL 2008-G05.**  **Minerals Management Service, 2008b, Notice to lessees and operators of federal oil, gas, and sulphur leases in the outer continental shelf, Gulf of Mexico OCS region, Information Requirements for Exploration Plans and Development**  **Operations Coordination Documents, U. S. Department of the Interior, Minerals Management Service, Gulf of Mexico, NTL 2008-G04.**  **Minerals Management Service, 2008c, Notice to lessees and operators of federal oil, gas, and sulphur leases in the outer continental shelf, Gulf of Mexico OCS region, Remotely operated vehicle surveys in deepwater: U. S. Department**  **of the Interior, Minerals Management Service, Gulf of Mexico, NTL 2008-G06. Minerals Management Service, 2010, Notice to lessees and operators of federal oil and gas leases in the outer**  **continental shelf, Gulf of Mexico OCS region, Deepwater benthic communities: U. S. Department of the Interior, Minerals Management Service, Gulf of Mexico, NTL 2009-G40. Effective Date January 27, 2010.**