Revised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. May 2011 

## Appendix B

National Pollutant Discharge Elimination System

Authorizations & Notice of IntentRevised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. May 2011 

## THIS PAGE INTENTIONALLY LEFT BLANKRevised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. 1 May 2011 

## Authorization and Extension of Authorizations Dated 23 June 2011 Covering EP Blocks Posey Area 6714, 6762, 6764, 6812, 6912, and 6915Revised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. May 2011 

## THIS PAGE INTENTIONALLY LEFT BLANKUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 10 1200 Sixth Avenue

, Suite 900 Seattle, WA 98101-3140 OFFICE OF THE REGIONAL ADMINISTRATOR



## JUN 23 2011

Ms. Susan Childs Alaska Venture Support Integrator Manager Shell Exploration & 

### Production Company
3601 C Street, Suite 1000 Anchorage, Alaska 99503

RE: Coverage for Shell Exploration & Production Company under the National Pollutant Discharge
Elimination System (NPDES) General Permit for Oil and Gas Exploration Activities on the
Outer Continental Shelf and Contiguous State Waters for Discharges into the Chukchi and
Beaufort Seas, Alaska

Dear Ms. Childs:

This letter provides the u.S. Environmental Protection Agency's (EPA) response to the Shell Exploration & Production Company's (Shell) submission of new and revised Notices ofIntent (NO Is) and related documents for authorization to discharge into the Chukchi and Beaufort Seas. Specifically,
the Shell NO Is requested permit coverage under the NPDES General Permit, AKG-28-0000 (Arctic GP), for wastewater discharges from Shell's proposed exploration activities beginning in the 2012 drilling season in both seas. This letter also addresses pennit number changes for prior EPA-issued discharge authorizations under the Arctic GP.

Permit Number Changes and Revised Permit Authorizations for Blocks 6658 and 6610



### In May 2009, Shell submitted NOIs for five lease blocks in the Chukchi Sea and two lease blocks in the Beaufort Sea. On January 20, 2010, the EPA issued discharge authorizations under the Arctic GP for
Blocks 6764, 6714, 6912, 6864 and 7007 located in the Chukchi Sea. The EPA assigned permit number
AKG-28-0004 for these five proposed drill sites. On April 20, 2010, the EPA issued discharge
authorizations under the Arctic GP for Blocks 6658 and 6610 located in the Beaufort Sea. The EPA assigned pennit number AKG-28-0005 for these two proposed drill sites.

On October 12,2010, Shell submitted a revised NOI for Block 6658 (Sivulliq N/G). The revised NOI
removed six waste streams from the original NOI (i.e., drilling muds, drilling cuttings, sanitary waste, domestic waste, uncontaminated ballast water and bilge water).

On December 16,2010, Shell resubmitted the five (5) original NOIs for the Chukchi Sea in accordance with the duty to reapply provisions ofthe Arctic GP, Part IV.B and 40 C.F.R. 

### § 122.21(d). Shell also resubmitted the Sivulliq N/G NOI for Block 6658 and included a revised NOI for Block 6610 (Torpedo H). The revised NOI removed six waste streams from the original NOI (i.e., drilling muds, drilling cuttings, sanitary waste, domestic waste, uncontaminated ballast water and bilge water).

### The five Chukchi Sea and the two revised Beaufort Sea NOls were deemed complete. Accordingly,
Arctic GP coverage for the five Chukchi Sea proposed drill sites is continued pursuant to the NPDES regulations at 40 C.F.R. §§ 122.6 and 122.21(d).

Pursuant to Part LD.3 of the Arctic GP and in accordance with the two revised Beaufort Sea NOls, Shell
is authorized the following discharges into the Beaufort Sea from the two proposed drill sites, Block
6658 (Sivulliq 

### N/G) and Block 6610 (Torpedo H), subject to the terms and conditions of the Arctic GP:



### Discharge Number Discharge Description
002 Deck Drainage
005 Desalination Unit Wastes
006 Blowout Preventer Fluid
009 Non-contact Cooling Water
012 Excess Cement Slurry
013 Muds, Cuttings, Cement at Seafloor

The EP A has determined that administration of Arctic GP discharge authorizations will be clearer if
different permit numbers are assigned to individual proposed drill sites. Consequently, the EPA is reassigning permit numbers as identified in the enclosed Attachment A. Attachment A is incorporated
herein by reference. Please use the applicable NPDES permit numbers in all future correspondence and reports.

New Discharge Authorizations

On December 16,2010, Shell also submitted 24 new NOls for 11 proposed drill sites in the Chukchi Sea
and 13 proposed drill sites in the Beaufort Sea (six in Harrison Bay and seven in Camden Bay). The 24
NOls were submitted before any applicable deadline under 40 C.F.R. § 122.21(d)(2) or Part VLB of the
Arctic GP. The 24 NOls are deemed complete.

Pursuant to Part LD.3 of the Arctic GP, Shell is authorized the following discharges into the Chukchi
Sea from 11 proposed drill sites (i.e., 6564, 6514, 6812,6762,6713,6811,6914,6864,6915,6763 and 6971), subject to the terms and conditions of the Arctic GP:



### Discharge Number Discharge Description
001 Drilling Fluids and Drilling Cuttings
002 Deck Drainage
003 Sanitary Wastes
004 Domestic Wastes
005 Desalination Unit Wastes
006 Blowout Preventer Fluid
009 Non-contact Cooling Water
010 Uncontaminated Ballast Water
011 

### Bilge Water
012 Excess Cement Slurry
013 Muds, Cuttings, Cement at Seafloor

2

### Pursuant to Part LD.3 of the Arctic OP, Shell is authorized the following discharges into the Beaufort
Sea (Harrison Bay) from six proposed drill sites (i.e., 6222, 6273, 6352, 6373, 

### 6374/6424 and 

### 6351/6401), subject to the terms and conditions of the Arctic OP:



### Discharge Number Discharge Description
001 Drilling Fluids and Drilling Cuttings
002 Deck Drainage
003 Sanitary Wastes
004 Domestic Wastes 005 Desalination Unit Wastes
006 Blowout Preventer Fluid
009 Non-contact Cooling Water
010 Uncontaminated Ballast Water
011 Bilge Water
012 Excess Cement Slurry
013 Muds, Cuttings, Cement at Seafloor

Pursuant to Part LD.3 of the Arctic OP, Shell is authorized the following discharges into the Beaufort
Sea (Camden Bay) from the seven proposed drill sites (i.e., 6757, 6707, 6709, 6559 (Torpedo C/J), 6609,6558 and 6508), subject to the terms and conditions of the Arctic OP:



### Discharge Number Discharge Description
002 Deck Drainage
005 Desalination Unit Wastes
006 Blowout Preventer Fluid
009 Non-contact Cooling Water
012 Excess Cement Slurry
013 Muds, Cuttings, Cement at Seafloor

The EPA has assigned individual permit numbers to each of the 24 proposed drill sites as identified in
the enclosed Attachment A. Please use the applicable NPDES permit numbers in all future correspondence and reports.

Please note the effluent limitations and monitoring requirements in Part II and the monitOling, recording
and reporting requirements in Part III of the Arctic OP. Discharge Monitoring Reports must be
submitted monthly by the 10 th 

### day of the following month.

A copy of the Arctic OP is enclosed and is also available on the EPA's webpage at http :// yosemite

. epa.gov / rl O / water.nsf / npdes+permits / arctic-gp

. Facilities discharging under the authority of the Arctic OP must keep a copy of the permit and this coverage letter at the facility where
the discharges occur, or retain a copy at the nearest administrative or field office managing the operation.

The EPA is in the process of reissuing the Arctic OP as two separate exploration general penni ts for the
Beaufort and Chukchi Seas. Permit coverage under the Arctic OP will expire when coverage under the
reissued general pennits is in effect. Operators authorized to discharge under the Arctic OP will be required to submit new NO Is for continued permit coverage under the applicable general permits when they are reissued.

3

### If you have any questions regarding this coverage letter or the Arctic GP, please do not hesitate

to contact Hanh Shaw, NPDES Permits Unit, at shaw.hanh@epa.gov or (206) 553-0171.

Sincerely,

# <-;f~~ Dennis J. 

### McLerran 

# ;.ny Regional Administrator

Enclosures

4

### Attachment A


### Shell Exploration and Production Company

Permit Number



### AKG-28-0004
AKG-28-0005
AKG-28-0006
AKG-28-0007
AKG-28-0008
AKG-28-0009
AKG-28-0010
AKG-28-0011
AKG-28-0012
AKG-28-0013
AKG-28-0014
AKG-28-0015
AKG-28-0016
AKG-28-0017
AKG-28-0018
AKG-28-0019
AKG-28-0020
AKG-28-0021
AKG-28-0022
AKG-28-0023
AKG-28-0024
AKG

- 28-0025
AKG-28-0026
AKG-28-0027
AKG-28-0028
AKG-28-0029
AKG- 28-0030
AKG-28-0031
AKG-28-0032
AKG-28-0033
AKG-28-0034 AKG-28-0000 NPDES Permit Numbers

Lease Block Well Name


### 6912 Burger 1


### 6764 Burger C
6714 Burger F
7007 SW Shoebill C
6864 Crackerj ack C
6658 Sivulliq N/G


### 6610 Torpedo H
6564 Bluefoot A
6514 Bluefoot B
6812 Burger R
6762 Burger S
6713 BurgerTBD
6811 BurgerTBD 6914 Burger TBD
6864 Burger U
6915 Burger V
6763 Burger Z
6971 Honey Guide A
6222 Cornell A
6273 Cornell B
6352 Mauya A
6373 Mauya Bl 6374/6424 

### MauyaB2 6351/6401 

### MayaB3
6757 Sivulliq K
6707 Sivulliq R
6709 Sivulliq W
6559 Torpedo Cil


### 6609 Torpedo D
6558 Torpedo E
6508 Torpedo F Location


### Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Beaufort Sea

- Camden Bay Beaufort Sea

- Camden Bay
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Chukchi Sea
Beaufort Sea

- Harrison Bay Beaufort Sea

- Harrison Bay
Beaufort Sea

- Harrison Bay
Beaufort Sea

- Harrison Bay Beaufort Sea

- Harrison Bay Beaufort Sea

- Harrison Bay Beaufort Sea

- Camden

, Bay
Beaufort Sea

- Camden Bay
Beaufort Sea

- Camden Bay
Beaufort Sea

- Camden Bay Beaufort Sea

- Camden Bay
Beaufort Sea

- Camden Bay Beaufort Sea

- Camden BayRevised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. May 2011 

## THIS PAGE INTENTIONALLY LEFT BLANKRevised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. 3 May 2011 

## Initial EPA Authorization

Dated 20 January 2010 Covering EP Blocks Pose y Area 6762, 6915, and 6812Revised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. 4 May 2011 

## THIS PAGE INTENTIONALLY LEFT BLANKUNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION 10 1200 Sixth Avenue. Suite 900 Seattle, Washington 98101·3140



### JAN 2 0 2010 Reply to Attn of: OWW ·130



### Ms. Susan Childs Regulatory Affairs Manager, Alaska
Shell Exploration & 

### Production Company
3601 C Street, Suite 1000 Anchorage, Alaska 99503

Re: Coverage for Shell Exploration & 

### Production Company under the National Pollutant Discharge Elimination System (NPDES) General Permit for Oil and Gas Exploration
Activities on the Outer Continental Shelf and Contiguous State Waters for Discharges into the Chukchi Sea, Alaska (AKG-28-0004)

Dear Ms. Childs:

On May 22,2009, the U.S. Environmental Protection Agency received five Notices of
Intent (NOls) from Shell Exploration & 

### Production Company (Shell) for authorization to discharge into the Chukchi Sea. Specifically, the NOls requested permit coverage under the
National Pollutant Discharge Elimination System (NPDES) General Permit, AKG-28-0000 (Arctic GP), for wastewater discharges from Shell's proposed exploration activities planned for
the 2010 Outer Continental Shelf (OCS) drilling season with the drillship 

### Frontier Discoverer.

On November 5,2009, EPA requested additional information from Shell to determine
whether the requested discharges could be covered under the Arctic GP. EPA received the supplemental information on December 1, 2009.

Pursuant to Part I.D.3 of the Arctic GP, Shell is authorized the following discharges into
the Chukchi Sea from the five proposed drill sites summarized in Table 1, below, subject to the

terms and conditions of the Arctic GP:

Discharge Number Discharge Description
001 Drilling Fluids and Drilling Cuttings
002 Deck Drainage
003 Sanitary Wastes 004 Domestic Wastes 005 Desalination Unit Wastes 006 Blowout Preventer Fluid
009 Non-contact Cooling Water
010 Uncontaminated Ballast Water 011 Bilge Water 012 Excess Cement Slurry 

### 013 Muds, Cuttings, Cement at Seafloor

### 2

T a blIP e 

## - rol'ose 

### d D n 

## 'n s' ltes 

### (Ch k h' S u c I 

### ea 

### ) Prospect Well Area Block Lease No.

Burger C Posey 6764 OCS-Y-2280 Burger F 

### Posey 6714 OCS-Y-2267 Burger J 

### Posey 6912 OCS-Y-2321 Crackerjack C Karo 6864 OCS-Y-2111 SW Shoebill C Karo 7007 OCS-Y-2142

Please note the effluent limitations and monitoring requirements in Part II. and the monitoring, recording and reporting requirements in Part ITI of the Arctic GP. Discharge Monitoring Reports must be submitted monthly by the 10 th 

### day of the following month.

The permit number assigned to this operation is AKG-28-0004. Please use this number
in all future correspondence and reports. A copy of the Arctic GP is enclosed and is also
available on EPA's webpage at http://epa.gov/rlOearthlwaterpermits.htm under general permits.
Facilities discharging under the authority of the Arctic GP must keep a copy of the permit and
this coverage letter at the facility where the discharges occur, or retain a copy at the nearest administrative or field office managing the operation.

If you have any questions regarding this coverage letter or the Arctic GP, please do not hesitate to contact Hanh Shaw of my staff at shaw.hanh@epa.gov or (206) 553-0171.

# :;;;~v~ Michael J. 

## Lidt: Manager
NPDES Permits Unit

EnclosureRevised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. 5 May 2011 

## Notice of Intent for Extension
Dated 16 December 2010 Covering EP Blocks Pose y Area 6762, 6915, and 6812Revised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. May 2011 

## THIS PAGE INTENTIONALLY LEFT BLANK

## Shell Exploration & Production Company

December 16, 2010 Shell Ms. Hanh Shaw 3601 C Street, Suite 1000 U.S. EPA, Region 10 Anchorage, AK 99503 Office of Water & Watersheds, NPDES Permits Unit 1200 Sixth Avenue, Suite 900, M/S OWW-130 Tel. (907) 646-7112 Seattle, WA 98101 Email susan.childs@shell.com
Internet http://www.shell.com /

Dear Ms. Shaw:

Subject: Notice of Intent for administrative extension under General Permit AKG-28-0000 Lease Number OCS-Y-2266, Lease Block 6713 Lease Number OCS-Y-2278, Lease Block 6762 Lease Number OCS-Y-2279, Lease Block 6763 Lease Number OCS-Y-2310, Lease Block 6864 Lease Number OCS-Y-2323, Lease Block 6914 Lease Number OCS-Y-2324, Lease Block 6915 Lease Number OCS-Y-2294, Lease Block 6812 Lease Number OCS-Y-2293, Lease Block 6811 Lease Number OCS-Y-1976, Lease Block 6971 Lease Number OCS-Y-2040, Lease Block 6514 Lease Number OCS-Y-2050, Lease Block 6564



### In accordance with 40 CFR 122.21(d) Shell Gulf of Mexico Inc. (Shell) is submitting Notices of Intent (NOIs) for the Lease Blocks listed above for authorization to discharge under General Permit AKG-28-0000 that expires on June 26, 2011. It is Shell’s understanding that a new general permit is not scheduled to be issued un til the fall of 2011. Therefore, these NOIs also serve as Shell’s request for an administrativ e extension to discha rge under NPDES General Permit AKG-28-0000 for 2011 and beyond for each authorized NOI until the new General Permit is available.

If you have questions about any co mponent of the proposed project, please contact me at (907) 646-7112 or email susan.childs@shell.com , or call Nicole St. Amand at (907) 646-7152 or email nicole.stamand@shell.com

.

### Sincerely,

Susan Childs Alaska Venture Support Integrator Manager Attachments - Notice of Intent (NOI) Information Sheets Location Maps Ocean Discharge Tables Discharge Flow Diagrams

cc: Diane Soderlund, USEPA Regi on 10, Alaska Operations Michael Lidgard, USEPA Region 10 Jeff Walker, BOEM Alaska Don Perrin, Alaska DNR Administrative RecordPermit No.: AKG280000



### ATTACHMENT 1



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

APPLICANT ( Owner/Operator)
Owner Name: Shell Gulf of Mexico Inc. Operator Mailing Address: 3601 C Street Telephone Number: 907-770-3700 Suite 1000 Operator Name: Shell Gulf of Mexico Inc. Anchorage, AK 99503 Telephone Number: 907-770-3700 

### FACILITY Facility Name: Noble Discoverer Facility Mailing Address: 3601 C Street Contact Name: Susan Childs Suite 1000 Telephone Number: 907-770-3700 Anchorage, AK 99503 Beginning Date of Operation: TBD Stationary Facilities Latitude:

Expected Duration of Operation: 32 days per well site Longitude:

Facility Type (check applicable type) Jackup

Mobile Facilities Initial Latitude: TBD Drill Ship
Semisubmersible Other (specify): Initial Longitude: TBD

Submit a site map showing the exact location of facility and discharges associated with the project. Mobile facilities may designate an area where they may be operating and must include a map showing those areas and a description of operations within those areas. If the discharge is within 4000 meters of an environmentally sensitive area indicated by the permit, those areas and their distance from th e operation/discharge must be shown on the map. 

### RECEIVING WATER
Chukchi Sea Other ( specify ):

Beaufort Sea Supply confirmation with the U.S. Department of State and NOAA that the discharge is seaward of the inner boundary baseline, if applicable. 

### LOCATION OF DISCHARGE

MMS Lease Number 

### OCS-Y-2278 ADNR Lease Number 

### N/A
Block Number 

### Posey Area Block 6762 Block Number 

### N/A

Range of water depths below mean lower low water (MLLW) in the lease block: From: 

### 145' To: 

### 145'

Page 1 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Discharges ( check all that apply) 001 Drilling Mud and Cuttings Water Depth: 

### 19.6' 002 Deck Drainage Water Depth: 

### 19.6' 003 Sanitary Waste Water Depth: 

### 19.6'
004 Domestic Waste Water Depth: 

### 19.6'
005 Desalination Unit Waste Water Depth: 

### 19.6'
006 Blowout Preventer Fluid Water Depth: 

### 145'
007 Boiler Blowdown Water Depth: 008 Fire Control System Test Water Water Depth: 009 Non-Contact Cooling Water Water Depth: 

### on the surface at several locations
010 Uncontaminated Ballast Water Water Depth: 

### 19.6' 011 Bilge Water Water Depth: 

### 19.6' 012 Excess Cement Slurry Water Depth: 

### 19.6' 013 Mud, Cuttings, Cement and Seafloor Water Depth: 

### MLC through 26" section cuttings at 135', excess cement at 145'
014 Test Fluid Water Depth: Provide a brief description of the treatment process(es) and disposal practices (e.g., backhauled, reinjected, discharged, etc.) at the facility. See attached (Table 1) Provide a line drawing that shows flow of discharged wast e streams through the facility. Indicate intake sources, operations contributing to the effluent, and treatment units labeled to correspond to the discharges (001 – 014). Construct a flow balance on the line drawing by showing average flows between intakes, operations, treatment units, and outfalls. If a flow balance cannot be determined, provide a pictorial description of the nature and amount of any sources, and any collection or treatment measures. 

### Well Information
Well Name: 

### Burger Latitude: 

### TBD
Well Number: 

### S Longitude: 

### TBD

Beginning Drill Date: 

### TBD Hole Diameter or Estimated Total Discharge Volume: 

### 36" diameter at surface, reducing through 4 stages to 8.5" at depth Drilling Fluid

Category ( check all that apply ) Water-based

Group ( check all that apply ) Lignosulfonate

Oil-based Lime Synthetic-based Gyp Other ( specify ): Sea-waterSaltwater
Saturated Saltwater Nondispersed (Viscosifier/Polymer) PH/PA



### Page 2 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Zone of Deposit Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a Zone of Deposit from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A ZONE OF DEPOSIT. The burden of proof for justifying a zone of deposit through demonstrating compliance with the requirements of 18 AAC 70.210 rests with the applicant. Distance from shorelin e of discharge point (measured at M.L.L.W.): Average Mud density: Depth of discharge (measured at M.L.L.W.): Flow Rate:

Orientation of outfall to shoreline (e.g., perpendicular, 45 ° , parallel): Total Volume:

Orientation of outfall to water surface (e.g., perpendicular, 45 ° , parallel): Maximum current and direction: If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser. 

### Mixing Zone Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a mixing zone from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A MIXING ZONE. The burden of proof for justifying a mixing zone through demonstrating compliance with the requirements of 18 AAC 70.240 through 18 AAC 70.270 rests with the applicant. Distance from shoreline of discharge point or first port of diffuser (meas ured at M.L.L.W.): Length of diffuser:
Depth of discharge port or diffuser (measured at M.L.L.W.): Diameter of port(s):

Orientation of diffuser to shoreline (e.g., perpendicular, 45 ° , parallel): Number of ports:

Maximum current: Port spacing:
USE OF RECEIVING WATER AT DISTANCE FROM DIFFUSER i.e., Supply for drinking water, Supply for agriculture including irrigation & stock water, Supply for a quaculture, Supply for industrial use, Contact recreation, Secondary recreation, Fish spawning, Harvesting and consumpti on of raw fish, or other aquatic life (Not needed if not requesting a mixing zone from ADEC):

If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser.



### Page 3 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Special Conditions ( provide justification for all that ar e not required, completed or provided)

Special Monitoring Required Not Required Justification:

Exploration Plans Attached Not Provided Justification: TBD

Biological Surveys Attached Not Provided Justification: None required

Environmental Report(s) Attached Not Provided Justification: Will be submitted to BOEMRE as part of the Exploration Plan

Drilling Fluid Plan Complete Not Complete Justification: In Preparation



### Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the pe rson or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties fo r submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Date: 12/16/2010

Printed Name: Susan Childs Title: Alaska Support Intergrator Manager 

### Mail Completed NOI to EPA and ADE C at the following addresses:

US EPA 1200 6 th Avenue, M/S OWW-130 Seattle, WA 98101 ADEC, Water Division 555 Cordova Street Anchorage, Alaska 99501



### Page 4 of 4! !

! !



### Ch u k c h i S e aRussian EEZUS EEZ 

## A r c t i c O c e a n

N P R - A

Le d y a r d B ay Barrow

Atqasuk

Point Lay Wainwright 6762

156°W 156°W

160°W 160°W

164°W 164°W

168°W 168°W72°N72°N70°N70°N ^
^ Barrow

Nome

Juneau Seward Inuvik

Anchorage Fairbanks

Prince Rupert



### Vicinity Map

NOTICE OF INTENT AKG-28-0000 Posey Area Block 6762 Chukchi Sea 

# $ Notes:

Mercator Projection Standard Latitude 71 Deg N WGS84

Shell AV GIS/12-14-2010/AKG-28-0000_Fig1_v1.mxd 

### Legend

State/Fed Boundary

Lease Of Interest

OCS Leases

Shell Operated

Other OCS Lease

Scale: Figure:

1 SHELL

0 20 40 60 10 MilesTABLE 1 Types and Estimated Volume Ocean Discharges – Burger S Prospect

Type of Waste Total Amount to be Discharged Discharge Rate* Discharge Method Drill cuttings (from MLC through 26- inch section) Discharge 013 4,152 bbl/well (cuttings only; no drilling muds used) 346 bbl/day Mud Line Cellar (MLC) through 26” section cuttings deposited at the seafloor

WBM spent drilling fluids – Discharge 001 3,327 bbl/well spent mud plus mud in tanks (if multiple wells drilled per season, water based muds will be transferred to and used at the next well) 166 bbl/day (including discharge of excess water based drilling fluid at end of the drilling season) Discharged to sea through disposal caisson after 30:1 dilution with seawater

Cuttings from water based intervals – Discharge 001 1,664 bbl/well 83 bbl/day Discharged to sea through disposal caisson after 30:1 dilution with seawater

Sanitary waste – Discharge 003 960 bbl/well 30 bbl/day Treated in marine sanitary device prior to discharge to meet NPDES limits (based on 140 people at 9 gal/person/day) Domestic waste – Discharge 004 10,667 bbl/well 333 bbl/day Discharged to water through the disposal caisson (based on 140 people at 100 gal/person/day)

Note: all food waste to be incinerated Excess cement – Discharge 012 50 bbl/well Two occasions at 1 bbl/min Discharged at seafloor during 30-inch and 20-inch cementing operations

Desalination unit brine water – Discharge 005 4,000 bbl/well 125 bbl/day Discharged to water through disposal caisson

Deck drainage – Discharge 002 160 bbl/well 5 bbl/day (dependent on rainfall) Drains to the oily water separator. Uncontaminated water id discharged through the disposal caisson; contaminated water is stored in a waste oil tank then transferred by boat to an approved treatment/disposal site. Cooling water – Discharge 009 1,440,000 bbl/well 45,000 bbl/day Discharged to water through a number of outlets Firewater - Discharge 008 0 0 bbl/month No routine firewater system testing anticipated Ballast water – Discharge 010 160 bbl/well 5 bbl/day Discharged to sea through disposal caisson Bilge water – Discharge 011 404 bbl/well 13 bbl/day Treated in oily water separator, uncontaminated water discharged to sea through disposal caisson, oily water stored onboard, transferred for transport by boat to an approved disposal site BOP fluid – Discharge 006 42 bbl/well (6 tests; 7 bbl per test) 7 bbl/test Discharged subsea at BOP when testing BOP

* assumes 12 days to complete the MLC through 26-inch section; 20 days to complete the remainder of the wellFigure 1. Drilling Fluid FlowpathReturn from wellTo wellCement UnitSeawater fromGS headerMud CleanersMudChillerShale ShakersHP HeaderDischarge 009Mud PumpsCharge PumpShale PitMud Additivesfrom storesDischarge 001Clean mud toshale pitWorking andSuction PitsHigh SuctionLow Suction3 x ME CoolersOverboard DischargesHighSuctionLowSuctionEmergencyBilgeME Sea Water PumpChemical InjectionMain EngineTo Fire MainGS PumpR f i tiFigure 2. Main Engine Room NonContact Cooling Water FlowsTo Refrig.CondensersFire PumpRefrigerationCondenserContactCoolingWaterFlowsHelideckFrom Refrig.CondensersOverboard DischargesFire PumpOverboard DischargesSea SuctionTo Ballast System(Discharge 010)To- Hydraulic Coolers / HPCompressors / SCR Room ACcondensers then overboard via twodischarge lines. Also mud pit fillingsupply.General Service PumpTo Fire MainDischarge 009Fire PumpsBiocideInjectionTo Ballast TanksDischarge 010)Discharge010)SuctionBallast PumpsTo Bilge TankBilge PumpsSuctionOverboard DischargesDischarge 011Figure 3. Pump Room Sea WaterFlowsSea Suction withStrainerFigure 4. Sivulliq N GeneratorRoom Sea Water FlowsChemicalInjectionGenerator Cooling Pumps6 x CAT 399 Engines2 x EvaporatorsEvaporator PumpsChemicalInjectionOverboard DischargesDischarge 002 (after runSea Suctionwith Strainerthrough the oily wasteseparator system)C t U itTo Flare Boom stationTo wellCementUnitfrom Centrifuge DrainsMud CoolersShale ShakersMud PumpsDischarge 009OverboardDischargeWash water fromcement pumpCuttings Trough (outbd)Dump Trough (inbd)Charge PumpCharge PumpDischarge 001Figure 5Mud Pump Room Sea Water Flows2 x SW PumpsChemicalFigure5.MudPumpRoomSeaWaterFlowsSchematicSEA SUCTIONC e caTreatmentOily Water Separator System

### Discharge Caisson

T h e discharge caisson is a pipe that runs vertically through the sponson on the hull of the drillship from the main deck level to the base of the sponson. The sponson is an exterior reinforced cladding installed on the Discoverer to provide ice resistance. It is hollow and extends from the main deck level to well below the water line.

Waste streams are collected aboard the drillship to a point on the main deck near the mud room. A 15-in. diameter pipe exits the hull, turns downwards and is connected to the top of the discharge caisson.

The discharge caisson, also a 15-in OD pipe, is welded into the sponson top and bottom (so that the interior of the sponson remains dry). The bottom of the sponson and the end of the discharge caisson is 5.6 ft (1.7 m) above the keel depth, and since it remains open to the sea at all times, the discharge caisson is constantly filled with water to mean sea level. This caisson is not equipped with a "float" valve; it is merely an open conduit to the sea through which most waste streams are discharged below sea level.

The Discoverer

has the following draft characteristics:

Max draft at load line: 27 ft (8.2 m) Transit draft 26.3 ft (8.0 m) Drilling draft 25.2 ft (7.7 m) Light ship draft 19.0 ft (5.8 m)

With the bottom of the sponson 5.6 ft above the keel, the base of the discharge caisson while drilling is 25.2 ft – 5.6 ft = 19.6 ft (6.0 m) below mean sea level. Because of heave, the water level inside the caisson is constantly changing.

See attached schematic drawings:

### Ship’s Hull Sponson Discharge Caisson

### Sponson 

### Top, Discharge Caisson

Section B-B Base, Discharge Caisson SponsonPermit No.: AKG280000



### ATTACHMENT 1



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

APPLICANT ( Owner/Operator)
Owner Name: Shell Gulf of Mexico Inc. Operator Mailing Address: 3601 C Street Telephone Number: 907-770-3700 Suite 1000 Operator Name: Shell Gulf of Mexico Inc. Anchorage, AK 99503 Telephone Number: 907-770-3700 

### FACILITY Facility Name: Noble Discoverer Facility Mailing Address: 3601 C Street Contact Name: Susan Childs Suite 1000 Telephone Number: 907-770-3700 Anchorage, AK 99503 Beginning Date of Operation: TBD Stationary Facilities Latitude:

Expected Duration of Operation: 31 days per well site Longitude:

Facility Type (check applicable type) Jackup

Mobile Facilities Initial Latitude: TBD Drill Ship
Semisubmersible Other (specify): Initial Longitude: TBD

Submit a site map showing the exact location of facility and discharges associated with the project. Mobile facilities may designate an area where they may be operating and must include a map showing those areas and a description of operations within those areas. If the discharge is within 4000 meters of an environmentally sensitive area indicated by the permit, those areas and their distance from th e operation/discharge must be shown on the map. 

### RECEIVING WATER
Chukchi Sea Other ( specify ):

Beaufort Sea Supply confirmation with the U.S. Department of State and NOAA that the discharge is seaward of the inner boundary baseline, if applicable. 

### LOCATION OF DISCHARGE

MMS Lease Number 

### OCS-Y-2324 ADNR Lease Number 

### N/A
Block Number 

### Posey Area Block 6915 Block Number 

### N/A

Range of water depths below mean lower low water (MLLW) in the lease block: From: 

### 145' To: 

### 145'

Page 1 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Discharges ( check all that apply) 001 Drilling Mud and Cuttings Water Depth: 

### 19.6' 002 Deck Drainage Water Depth: 

### 19.6' 003 Sanitary Waste Water Depth: 

### 19.6'
004 Domestic Waste Water Depth: 

### 19.6'
005 Desalination Unit Waste Water Depth: 

### 19.6'
006 Blowout Preventer Fluid Water Depth: 

### 145'
007 Boiler Blowdown Water Depth: 008 Fire Control System Test Water Water Depth: 009 Non-Contact Cooling Water Water Depth: 

### on the surface at several locations
010 Uncontaminated Ballast Water Water Depth: 

### 19.6' 011 Bilge Water Water Depth: 

### 19.6' 012 Excess Cement Slurry Water Depth: 

### 19.6' 013 Mud, Cuttings, Cement and Seafloor Water Depth: 

### MLC through 26" section cuttings at 135'; excess cement at 145'
014 Test Fluid Water Depth: Provide a brief description of the treatment process(es) and disposal practices (e.g., backhauled, reinjected, discharged, etc.) at the facility. See attached (Table 1) Provide a line drawing that shows flow of discharged wast e streams through the facility. Indicate intake sources, operations contributing to the effluent, and treatment units labeled to correspond to the discharges (001 – 014). Construct a flow balance on the line drawing by showing average flows between intakes, operations, treatment units, and outfalls. If a flow balance cannot be determined, provide a pictorial description of the nature and amount of any sources, and any collection or treatment measures. 

### Well Information
Well Name: 

### Burger Latitude: 

### TBD
Well Number: 

### V Longitude: 

### TBD

Beginning Drill Date: 

### TBD Hole Diameter or Estimated Total Discharge Volume: 

### 36" diameter at surface, reducing through 4 stages to 8.5" at depth Drilling Fluid

Category ( check all that apply ) Water-based

Group ( check all that apply ) Lignosulfonate

Oil-based Lime Synthetic-based Gyp Other ( specify ): Sea-waterSaltwater
Saturated Saltwater Nondispersed (Viscosifier/Polymer) PH/PA



### Page 2 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Zone of Deposit Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a Zone of Deposit from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A ZONE OF DEPOSIT. The burden of proof for justifying a zone of deposit through demonstrating compliance with the requirements of 18 AAC 70.210 rests with the applicant. Distance from shorelin e of discharge point (measured at M.L.L.W.): Average Mud density: Depth of discharge (measured at M.L.L.W.): Flow Rate:

Orientation of outfall to shoreline (e.g., perpendicular, 45 ° , parallel): Total Volume:

Orientation of outfall to water surface (e.g., perpendicular, 45 ° , parallel): Maximum current and direction: If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser. 

### Mixing Zone Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a mixing zone from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A MIXING ZONE. The burden of proof for justifying a mixing zone through demonstrating compliance with the requirements of 18 AAC 70.240 through 18 AAC 70.270 rests with the applicant. Distance from shoreline of discharge point or first port of diffuser (meas ured at M.L.L.W.): Length of diffuser:
Depth of discharge port or diffuser (measured at M.L.L.W.): Diameter of port(s):

Orientation of diffuser to shoreline (e.g., perpendicular, 45 ° , parallel): Number of ports:

Maximum current: Port spacing:
USE OF RECEIVING WATER AT DISTANCE FROM DIFFUSER i.e., Supply for drinking water, Supply for agriculture including irrigation & stock water, Supply for a quaculture, Supply for industrial use, Contact recreation, Secondary recreation, Fish spawning, Harvesting and consumpti on of raw fish, or other aquatic life (Not needed if not requesting a mixing zone from ADEC):

If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser.



### Page 3 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Special Conditions ( provide justification for all that ar e not required, completed or provided)

Special Monitoring Required Not Required Justification:

Exploration Plans Attached Not Provided Justification: TBD

Biological Surveys Attached Not Provided Justification: None required

Environmental Report(s) Attached Not Provided Justification: Will be submitted to BOEM as part of the Exploration Plan

Drilling Fluid Plan Complete Not Complete Justification: In Preparation



### Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the pe rson or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties fo r submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Date: 12/16/2010

Printed Name: Susan Childs Title: Alaska Support Intergrator Manager 

### Mail Completed NOI to EPA and ADE C at the following addresses:

US EPA 1200 6 th Avenue, M/S OWW-130 Seattle, WA 98101 ADEC, Water Division 555 Cordova Street Anchorage, Alaska 99501



### Page 4 of 4! !

! !



### Ch u k c h i S e aRussian EEZUS EEZ 

## A r c t i c O c e a n

N P R - A

Le d y a r d B ay Barrow

Atqasuk

Point Lay Wainwright 6915

156°W 156°W

160°W 160°W

164°W 164°W

168°W 168°W72°N72°N70°N70°N ^
^ Barrow

Nome

Juneau Seward Inuvik

Anchorage Fairbanks

Prince Rupert



### Vicinity Map

NOTICE OF INTENT AKG-28-0000 Posey Area Block 6915 Chukchi Sea 

# $ Notes:

Mercator Projection Standard Latitude 71 Deg N WGS84

Shell AV GIS/12-14-2010/AKG-28-0000_Fig1_v1.mxd 

### Legend

State/Fed Boundary

Lease Of Interest

OCS Leases

Shell Operated

Other OCS Lease

Scale: Figure:

1 SHELL

0 20 40 60 10 MilesTABLE 1 Types and Estimated Volume Ocean Discharges – Burger V Prospect

Type of Waste Total Amount to be Discharged Discharge Rate* Discharge Method Drill cuttings (from MLC through 26- inch section) Discharge 013 4,152 bbl/well (cuttings only; no drilling muds used) 346 bbl/day Mud Line Cellar (MLC) through 26” section cuttings deposited at the seafloor

WBM spent drilling fluids – Discharge 001 3,291 bbl/well spent mud plus mud in tanks (if multiple wells drilled per season, water based muds will be transferred to and used at the next well) 173 bbl/day (including discharge of excess water based drilling fluid at end of the drilling season) Discharged to sea through disposal caisson after 30:1 dilution with seawater

Cuttings from water based intervals – Discharge 001 1,645bbl/well 87 bbl/day Discharged to sea through disposal caisson after 30:1 dilution with seawater

Sanitary waste – Discharge 003 10,333 bbl/well 30 bbl/day Treated in marine sanitary device prior to discharge to meet NPDES limits (based on 140 people at 9 gal/person/day) Domestic waste – Discharge 004 2573 bbl/well 333 bbl/day Discharged to water through the disposal caisson (based on 140 people at 100 gal/person/day)

Note: all food waste to be incinerated Excess cement – Discharge 012 50 bbl/well Two occasions at 1 bbl/min Discharged at seafloor during 30-inch and 20-inch cementing operations

Desalination unit brine water – Discharge 005 3,875 bbl/well 125 bbl/day Discharged to water through disposal caisson

Deck drainage – Discharge 002 155 bbl/well 5 bbl/day (dependent on rainfall) Drains to the oily water separator. Uncontaminated water id discharged through the disposal caisson; contaminated water is stored in a waste oil tank then transferred by boat to an approved treatment/disposal site. Cooling water – Discharge 009 1,395,000 bbl/well 45,000 bbl/day Discharged to water through a number of outlets Firewater - Discharge 008 0 0 bbl/month No routine firewater system testing anticipated Ballast water – Discharge 010 155 bbl/well 5 bbl/day Discharged to sea through disposal caisson Bilge water – Discharge 011 391 bbl/well 13 bbl/day Treated in oily water separator, uncontaminated water discharged to sea through disposal caisson, oily water stored onboard, transferred for transport by boat to an approved disposal site BOP fluid – Discharge 006 42 bbl/well (6 tests; 7 bbl per test) 7 bbl/test Discharged subsea at BOP when testing BOP

* assumes 12 days to complete the MLC through 26-inch section; 19 days to complete the remainder of the wellFigure 1. Drilling Fluid FlowpathReturn from wellTo wellCement UnitSeawater fromGS headerMud CleanersMudChillerShale ShakersHP HeaderDischarge 009Mud PumpsCharge PumpShale PitMud Additivesfrom storesDischarge 001Clean mud toshale pitWorking andSuction PitsHigh SuctionLow Suction3 x ME CoolersOverboard DischargesHighSuctionLowSuctionEmergencyBilgeME Sea Water PumpChemical InjectionMain EngineTo Fire MainGS PumpR f i tiFigure 2. Main Engine Room NonContact Cooling Water FlowsTo Refrig.CondensersFire PumpRefrigerationCondenserContactCoolingWaterFlowsHelideckFrom Refrig.CondensersOverboard DischargesFire PumpOverboard DischargesSea SuctionTo Ballast System(Discharge 010)To- Hydraulic Coolers / HPCompressors / SCR Room ACcondensers then overboard via twodischarge lines. Also mud pit fillingsupply.General Service PumpTo Fire MainDischarge 009Fire PumpsBiocideInjectionTo Ballast TanksDischarge 010)Discharge010)SuctionBallast PumpsTo Bilge TankBilge PumpsSuctionOverboard DischargesDischarge 011Figure 3. Pump Room Sea WaterFlowsSea Suction withStrainerFigure 4. Sivulliq N GeneratorRoom Sea Water FlowsChemicalInjectionGenerator Cooling Pumps6 x CAT 399 Engines2 x EvaporatorsEvaporator PumpsChemicalInjectionOverboard DischargesDischarge 002 (after runSea Suctionwith Strainerthrough the oily wasteseparator system)C t U itTo Flare Boom stationTo wellCementUnitfrom Centrifuge DrainsMud CoolersShale ShakersMud PumpsDischarge 009OverboardDischargeWash water fromcement pumpCuttings Trough (outbd)Dump Trough (inbd)Charge PumpCharge PumpDischarge 001Figure 5Mud Pump Room Sea Water Flows2 x SW PumpsChemicalFigure5.MudPumpRoomSeaWaterFlowsSchematicSEA SUCTIONC e caTreatmentOily Water Separator System

### Discharge Caisson

T h e discharge caisson is a pipe that runs vertically through the sponson on the hull of the drillship from the main deck level to the base of the sponson. The sponson is an exterior reinforced cladding installed on the Discoverer to provide ice resistance. It is hollow and extends from the main deck level to well below the water line.

Waste streams are collected aboard the drillship to a point on the main deck near the mud room. A 15-in. diameter pipe exits the hull, turns downwards and is connected to the top of the discharge caisson.

The discharge caisson, also a 15-in OD pipe, is welded into the sponson top and bottom (so that the interior of the sponson remains dry). The bottom of the sponson and the end of the discharge caisson is 5.6 ft (1.7 m) above the keel depth, and since it remains open to the sea at all times, the discharge caisson is constantly filled with water to mean sea level. This caisson is not equipped with a "float" valve; it is merely an open conduit to the sea through which most waste streams are discharged below sea level.

The Discoverer

has the following draft characteristics:

Max draft at load line: 27 ft (8.2 m) Transit draft 26.3 ft (8.0 m) Drilling draft 25.2 ft (7.7 m) Light ship draft 19.0 ft (5.8 m)

With the bottom of the sponson 5.6 ft above the keel, the base of the discharge caisson while drilling is 25.2 ft – 5.6 ft = 19.6 ft (6.0 m) below mean sea level. Because of heave, the water level inside the caisson is constantly changing.

See attached schematic drawings:

### Ship’s Hull Sponson Discharge Caisson

### Sponson 

### Top, Discharge Caisson

Section B-B Base, Discharge Caisson SponsonPermit No.: AKG280000



### ATTACHMENT 1



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

APPLICANT ( Owner/Operator)
Owner Name: Shell Gulf of Mexico Inc. Operator Mailing Address: 3601 C Street Telephone Number: 907-770-3700 Suite 1000 Operator Name: Shell Gulf of Mexico Inc. Anchorage, AK 99503 Telephone Number: 907-770-3700 

### FACILITY Facility Name: Noble Discoverer Facility Mailing Address: 3601 C Street Contact Name: Susan Childs Suite 1000 Telephone Number: 907-770-3700 Anchorage, AK 99503 Beginning Date of Operation: TBD Stationary Facilities Latitude:

Expected Duration of Operation: 50 days per well site Longitude:

Facility Type (check applicable type) Jackup

Mobile Facilities Initial Latitude: TBD Drill Ship
Semisubmersible Other (specify): Initial Longitude: TBD

Submit a site map showing the exact location of facility and discharges associated with the project. Mobile facilities may designate an area where they may be operating and must include a map showing those areas and a description of operations within those areas. If the discharge is within 4000 meters of an environmentally sensitive area indicated by the permit, those areas and their distance from th e operation/discharge must be shown on the map. 

### RECEIVING WATER
Chukchi Sea Other ( specify ):

Beaufort Sea Supply confirmation with the U.S. Department of State and NOAA that the discharge is seaward of the inner boundary baseline, if applicable. 

### LOCATION OF DISCHARGE

MMS Lease Number 

### OCS-Y-2294 ADNR Lease Number 

### N/A
Block Number 

### Posey Area Block 6812 Block Number 

### N/A

Range of water depths below mean lower low water (MLLW) in the lease block: From: 

### 145' To: 

### 145'

Page 1 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Discharges ( check all that apply) 001 Drilling Mud and Cuttings Water Depth: 

### 19.6' 002 Deck Drainage Water Depth: 

### 19.6' 003 Sanitary Waste Water Depth: 

### 19.6'
004 Domestic Waste Water Depth: 

### 19.6'
005 Desalination Unit Waste Water Depth: 

### 19.6'
006 Blowout Preventer Fluid Water Depth: 

### 145'
007 Boiler Blowdown Water Depth: 008 Fire Control System Test Water Water Depth: 009 Non-Contact Cooling Water Water Depth: 

### on the surface at several locations
010 Uncontaminated Ballast Water Water Depth: 

### 19.6' 011 Bilge Water Water Depth: 

### 19.6' 012 Excess Cement Slurry Water Depth: 

### 19.6' 013 Mud, Cuttings, Cement and Seafloor Water Depth: 

### MLC through 26" section cuttings at 135'; excess cement at 145'
014 Test Fluid Water Depth: Provide a brief description of the treatment process(es) and disposal practices (e.g., backhauled, reinjected, discharged, etc.) at the facility. See attached (Table 1) Provide a line drawing that shows flow of discharged wast e streams through the facility. Indicate intake sources, operations contributing to the effluent, and treatment units labeled to correspond to the discharges (001 – 014). Construct a flow balance on the line drawing by showing average flows between intakes, operations, treatment units, and outfalls. If a flow balance cannot be determined, provide a pictorial description of the nature and amount of any sources, and any collection or treatment measures. 

### Well Information
Well Name: 

### Burger Latitude: 

### TBD
Well Number: 

### R Longitude: 

### TBD

Beginning Drill Date: 

### TBD Hole Diameter or Estimated Total Discharge Volume: 

### 36" diameter at surface, reducing through 4 stages to 8.5" at depth Drilling Fluid

Category ( check all that apply ) Water-based

Group ( check all that apply ) Lignosulfonate

Oil-based Lime Synthetic-based Gyp Other ( specify ): Sea-waterSaltwater
Saturated Saltwater Nondispersed (Viscosifier/Polymer) PH/PA



### Page 2 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Zone of Deposit Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a Zone of Deposit from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A ZONE OF DEPOSIT. The burden of proof for justifying a zone of deposit through demonstrating compliance with the requirements of 18 AAC 70.210 rests with the applicant. Distance from shorelin e of discharge point (measured at M.L.L.W.): Average Mud density: Depth of discharge (measured at M.L.L.W.): Flow Rate:

Orientation of outfall to shoreline (e.g., perpendicular, 45 ° , parallel): Total Volume:

Orientation of outfall to water surface (e.g., perpendicular, 45 ° , parallel): Maximum current and direction: If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser. 

### Mixing Zone Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a mixing zone from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A MIXING ZONE. The burden of proof for justifying a mixing zone through demonstrating compliance with the requirements of 18 AAC 70.240 through 18 AAC 70.270 rests with the applicant. Distance from shoreline of discharge point or first port of diffuser (meas ured at M.L.L.W.): Length of diffuser:
Depth of discharge port or diffuser (measured at M.L.L.W.): Diameter of port(s):

Orientation of diffuser to shoreline (e.g., perpendicular, 45 ° , parallel): Number of ports:

Maximum current: Port spacing:
USE OF RECEIVING WATER AT DISTANCE FROM DIFFUSER i.e., Supply for drinking water, Supply for agriculture including irrigation & stock water, Supply for a quaculture, Supply for industrial use, Contact recreation, Secondary recreation, Fish spawning, Harvesting and consumpti on of raw fish, or other aquatic life (Not needed if not requesting a mixing zone from ADEC):

If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser.



### Page 3 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Special Conditions ( provide justification for all that ar e not required, completed or provided)

Special Monitoring Required Not Required Justification:

Exploration Plans Attached Not Provided Justification: TBD

Biological Surveys Attached Not Provided Justification: None required

Environmental Report(s) Attached Not Provided Justification: Will be submitted to BOEMRE as part of the Exploration Plan

Drilling Fluid Plan Complete Not Complete Justification: In Preparation



### Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the pe rson or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties fo r submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Date: 12/16/2010

Printed Name: Susan Childs Title: Alaska Support Intergrator Manager 

### Mail Completed NOI to EPA and ADE C at the following addresses:

US EPA 1200 6 th Avenue, M/S OWW-130 Seattle, WA 98101 ADEC, Water Division 555 Cordova Street Anchorage, Alaska 99501



### Page 4 of 4! !

! !



### Ch u k c h i S e aRussian EEZUS EEZ 

## A r c t i c O c e a n

N P R - A

Le d y a r d B ay Barrow

Atqasuk

Point Lay Wainwright 6812

156°W 156°W

160°W 160°W

164°W 164°W

168°W 168°W72°N72°N70°N70°N ^
^ Barrow

Nome

Juneau Seward Inuvik

Anchorage Fairbanks

Prince Rupert



### Vicinity Map

NOTICE OF INTENT AKG-28-0000 Posey Area Block 6812 Chukchi Sea 

# $ Notes:

Mercator Projection Standard Latitude 71 Deg N WGS84

Shell AV GIS/12-14-2010/AKG-28-0000_Fig1_v1.mxd 

### Legend

State/Fed Boundary

Lease Of Interest

OCS Leases

Shell Operated

Other OCS Lease

Scale: Figure:

1 SHELL

0 20 40 60 10 MilesTABLE 1 Types and Estimated Volume Ocean Discharges – Burger R Prospect

Type of Waste Total Amount to be Discharged Discharge Rate* Discharge Method Drill cuttings (from MLC through 26- inch section) Discharge 013 4,152 bbl/well (cuttings only; no drilling muds used) 346 bbl/day Mud Line Cellar (MLC) through 26” section cuttings deposited at the seafloor

WBM spent drilling fluids – Discharge 001 4,159 bbl/well spent mud plus mud in tanks (if multiple wells drilled per season, water based muds will be transferred to and used at the next well) 109 bbl/day (including discharge of excess water based drilling fluid at end of the drilling season) Discharged to sea through disposal caisson after 30:1 dilution with seawater

Cuttings from water based intervals – Discharge 001 2,080 bbl/well 55 bbl/day Discharged to sea through disposal caisson after 30:1 dilution with seawater

Sanitary waste – Discharge 003 1,500 bbl/well 30 bbl/day Treated in marine sanitary device prior to discharge to meet NPDES limits (based on 140 people at 9 gal/person/day) Domestic waste – Discharge 004 16,667bbl/well 333 bbl/day Discharged to water through the disposal caisson (based on 140 people at 100 gal/person/day)

Note: all food waste to be incinerated Excess cement – Discharge 012 50 bbl/well Two occasions at 1 bbl/min Discharged at seafloor during 30-inch and 20-inch cementing operations

Desalination unit brine water – Discharge 005 6,250 bbl/well 125 bbl/day Discharged to water through disposal caisson

Deck drainage – Discharge 002 250 bbl/well 5 bbl/day (dependent on rainfall) Drains to the oily water separator. Uncontaminated water id discharged through the disposal caisson; contaminated water is stored in a waste oil tank then transferred by boat to an approved treatment/disposal site. Cooling water – Discharge 009 2,250,000 bbl/well 45,000 bbl/day Discharged to water through a number of outlets Firewater - Discharge 008 0 0 bbl/month No routine firewater system testing anticipated Ballast water – Discharge 010 250 bbl/well 5 bbl/day Discharged to sea through disposal caisson Bilge water – Discharge 011 631 bbl/well 13 bbl/day Treated in oily water separator, uncontaminated water discharged to sea through disposal caisson, oily water stored onboard, transferred for transport by boat to an approved disposal site BOP fluid – Discharge 006 42 bbl/well (6 tests; 7 bbl per test) 7 bbl/test Discharged subsea at BOP when testing BOP

* assumes 12 days to complete the MLC through 26-inch section; 38 days to complete the remainder of the wellFigure 1. Drilling Fluid FlowpathReturn from wellTo wellCement UnitSeawater fromGS headerMud CleanersMudChillerShale ShakersHP HeaderDischarge 009Mud PumpsCharge PumpShale PitMud Additivesfrom storesDischarge 001Clean mud toshale pitWorking andSuction PitsHigh SuctionLow Suction3 x ME CoolersOverboard DischargesHighSuctionLowSuctionEmergencyBilgeME Sea Water PumpChemical InjectionMain EngineTo Fire MainGS PumpR f i tiFigure 2. Main Engine Room NonContact Cooling Water FlowsTo Refrig.CondensersFire PumpRefrigerationCondenserContactCoolingWaterFlowsHelideckFrom Refrig.CondensersOverboard DischargesFire PumpOverboard DischargesSea SuctionTo Ballast System(Discharge 010)To- Hydraulic Coolers / HPCompressors / SCR Room ACcondensers then overboard via twodischarge lines. Also mud pit fillingsupply.General Service PumpTo Fire MainDischarge 009Fire PumpsBiocideInjectionTo Ballast TanksDischarge 010)Discharge010)SuctionBallast PumpsTo Bilge TankBilge PumpsSuctionOverboard DischargesDischarge 011Figure 3. Pump Room Sea WaterFlowsSea Suction withStrainerFigure 4. Sivulliq N GeneratorRoom Sea Water FlowsChemicalInjectionGenerator Cooling Pumps6 x CAT 399 Engines2 x EvaporatorsEvaporator PumpsChemicalInjectionOverboard DischargesDischarge 002 (after runSea Suctionwith Strainerthrough the oily wasteseparator system)C t U itTo Flare Boom stationTo wellCementUnitfrom Centrifuge DrainsMud CoolersShale ShakersMud PumpsDischarge 009OverboardDischargeWash water fromcement pumpCuttings Trough (outbd)Dump Trough (inbd)Charge PumpCharge PumpDischarge 001Figure 5Mud Pump Room Sea Water Flows2 x SW PumpsChemicalFigure5.MudPumpRoomSeaWaterFlowsSchematicSEA SUCTIONC e caTreatmentOily Water Separator System

### Discharge Caisson

T h e discharge caisson is a pipe that runs vertically through the sponson on the hull of the drillship from the main deck level to the base of the sponson. The sponson is an exterior reinforced cladding installed on the Discoverer to provide ice resistance. It is hollow and extends from the main deck level to well below the water line.

Waste streams are collected aboard the drillship to a point on the main deck near the mud room. A 15-in. diameter pipe exits the hull, turns downwards and is connected to the top of the discharge caisson.

The discharge caisson, also a 15-in OD pipe, is welded into the sponson top and bottom (so that the interior of the sponson remains dry). The bottom of the sponson and the end of the discharge caisson is 5.6 ft (1.7 m) above the keel depth, and since it remains open to the sea at all times, the discharge caisson is constantly filled with water to mean sea level. This caisson is not equipped with a "float" valve; it is merely an open conduit to the sea through which most waste streams are discharged below sea level.

The Discoverer

has the following draft characteristics:

Max draft at load line: 27 ft (8.2 m) Transit draft 26.3 ft (8.0 m) Drilling draft 25.2 ft (7.7 m) Light ship draft 19.0 ft (5.8 m)

With the bottom of the sponson 5.6 ft above the keel, the base of the discharge caisson while drilling is 25.2 ft – 5.6 ft = 19.6 ft (6.0 m) below mean sea level. Because of heave, the water level inside the caisson is constantly changing.

See attached schematic drawings:

### Ship’s Hull Sponson Discharge Caisson

### Sponson 

### Top, Discharge Caisson

Section B-B Base, Discharge Caisson SponsonRevised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. 7 May 2011 

## Notice of Intent for Initial / Extension Dated 16 December 2010 Covering EP Blocks Pose y Area 6764, 6714, and 6912Revised Outer Continental Shelf Lease Exploration Plan Chukchi Sea, Alaska

Shell Gulf of Mexico Inc. May 2011 

## THIS PAGE INTENTIONALLY LEFT BLANK

## Shell Exploration & Production Company

December 16, 2010 Shell Ms. Hanh Shaw 3601 C Street, Suite 1000 U.S. EPA, Region 10 Anchorage, AK 99503 Office of Water & Watersheds, NPDES Permits Unit 1200 Sixth Avenue, Suite 900, M/S OWW-130 Tel. (907) 646-7112 Seattle, WA 98101 Email susan.childs@shell.com
Internet http://www.shell.com /

Dear Ms. Shaw:

Subject: Notice of Intent for administrative extension under General Permit AKG-28-0000 Lease Number OCS-Y-2280, Lease Block 6764 Lease Number OCS-Y-2267, Lease Block 6714 Lease Number OCS-Y-2321, Lease Block 6912 Lease Number OCS-Y-2111, Lease Block 6864 Lease Number OCS-Y-2142, Lease Block 7007



### In accordance with 40 CFR 122.21(d) Shell Gulf of Mexico Inc. (Shell) is submitting Notices of Intent (NOIs) for the Lease Blocks listed above for authorization to discharge under General Permit AKG-28-0000 that expires on June 26, 2011. It is Shell’s understanding that a new general permit is not scheduled to be issued un til the fall of 2011. Therefore, these NOIs also serve as Shell’s request for an administrativ e extension to discha rge under NPDES General Permit AKG-28-0000 for 2011 and beyond for each authorized NOI until the new General Permit is available. The attached NOIs were or iginally granted by EPA on January 21, 2010 for AKG-28-0004.

If you have questions about any co mponent of the proposed project, please contact me at (907) 646-7112 or email susan.childs@shell.com , or call Nicole St. Amand at (907) 646-7152 or email nicole.stamand@shell.com

.

Sincerely,

Susan Childs Alaska Venture Support Integrator Manager

### Attachments - Notice of Intent (NOI) Information Sheets Location Maps Ocean Discharge Tables Discharge Flow Diagrams

cc: Diane Soderlund, USEPA Regi on 10, Alaska Operations Michael Lidgard, USEPA Region 10 Jeff Walker, BOEMRE Alaska Don Perrin, Alaska DNR Administrative RecordPermit No.: AKG280000



### ATTACHMENT 1



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

APPLICANT ( Owner/Operator)
Owner Name: Shell Gulf of Mexico Inc. Operator Mailing Address: 3601 C Street Telephone Number: 907-770-3700 Suite 1000 Operator Name: Shell Gulf of Mexico Inc. Anchorage, AK 99503 Telephone Number: 907-770-3700 

### FACILITY Facility Name: Noble Discoverer Facility Mailing Address: 3601 C Street Contact Name: Susan Childs Suite 1000 Telephone Number: 907-770-3700 Anchorage, AK 99503 Beginning Date of Operation: TBD Stationary Facilities Latitude:

Expected Duration of Operation: 32 days per well site Longitude:

Facility Type (check applicable type) Jackup

Mobile Facilities Initial Latitude: TBD Drill Ship
Semisubmersible Other (specify): Initial Longitude: TBD

Submit a site map showing the exact location of facility and discharges associated with the project. Mobile facilities may designate an area where they may be operating and must include a map showing those areas and a description of operations within those areas. If the discharge is within 4000 meters of an environmentally sensitive area indicated by the permit, those areas and their distance from th e operation/discharge must be shown on the map. 

### RECEIVING WATER
Chukchi Sea Other ( specify ):

Beaufort Sea Supply confirmation with the U.S. Department of State and NOAA that the discharge is seaward of the inner boundary baseline, if applicable. 

### LOCATION OF DISCHARGE

MMS Lease Number 

### OCS-Y-2280 ADNR Lease Number 

### N/A
Block Number 

### 6764 Block Number 

### N/A Range of water depths below mean lower low water (MLLW) in the lease block: From: 

### 149' To: 

### 149'

Page 1 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Discharges ( check all that apply) 001 Drilling Mud and Cuttings Water Depth: 

### 19.6' 002 Deck Drainage Water Depth: 

### 19.6' 003 Sanitary Waste Water Depth: 

### 19.6'
004 Domestic Waste Water Depth: 

### 19.6'
005 Desalination Unit Waste Water Depth: 

### 19.6'
006 Blowout Preventer Fluid Water Depth: 

### 149'
007 Boiler Blowdown Water Depth: 008 Fire Control System Test Water Water Depth: 009 Non-Contact Cooling Water Water Depth: 

### on the surface at several locations
010 Uncontaminated Ballast Water Water Depth: 

### 19.6' 011 Bilge Water Water Depth: 

### 19.6' 012 Excess Cement Slurry Water Depth: 

### 19.6' 013 Mud, Cuttings, Cement and Seafloor Water Depth: 

### MLC through 26" section cuttings at 139', excess cement at 149'
014 Test Fluid Water Depth: Provide a brief description of the treatment process(es) and disposal practices (e.g., backhauled, reinjected, discharged, etc.) at the facility. See attached (Table 1) Provide a line drawing that shows flow of discharged wast e streams through the facility. Indicate intake sources, operations contributing to the effluent, and treatment units labeled to correspond to the discharges (001 – 014). Construct a flow balance on the line drawing by showing average flows between intakes, operations, treatment units, and outfalls. If a flow balance cannot be determined, provide a pictorial description of the nature and amount of any sources, and any collection or treatment measures. 

### Well Information
Well Name: 

### Burger Latitude: 

### TBD
Well Number: 

### A Longitude: 

### TBD

Beginning Drill Date: 

### TBD Hole Diameter or Estimated Total Discharge Volume: 

### 36" diameter at surface, reducing through 4 stages to 8.5" at depth Drilling Fluid

Category ( check all that apply ) Water-based

Group ( check all that apply ) Lignosulfonate

Oil-based Lime Synthetic-based Gyp Other ( specify ): Sea-waterSaltwater
Saturated Saltwater Nondispersed (Viscosifier/Polymer) PH/PA



### Page 2 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Zone of Deposit Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a Zone of Deposit from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A ZONE OF DEPOSIT. The burden of proof for justifying a zone of deposit through demonstrating compliance with the requirements of 18 AAC 70.210 rests with the applicant. Distance from shorelin e of discharge point (measured at M.L.L.W.): Average Mud density: Depth of discharge (measured at M.L.L.W.): Flow Rate:

Orientation of outfall to shoreline (e.g., perpendicular, 45 ° , parallel): Total Volume:

Orientation of outfall to water surface (e.g., perpendicular, 45 ° , parallel): Maximum current and direction: If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser. 

### Mixing Zone Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a mixing zone from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A MIXING ZONE. The burden of proof for justifying a mixing zone through demonstrating compliance with the requirements of 18 AAC 70.240 through 18 AAC 70.270 rests with the applicant. Distance from shoreline of discharge point or first port of diffuser (meas ured at M.L.L.W.): Length of diffuser:
Depth of discharge port or diffuser (measured at M.L.L.W.): Diameter of port(s):

Orientation of diffuser to shoreline (e.g., perpendicular, 45 ° , parallel): Number of ports:

Maximum current: Port spacing:
USE OF RECEIVING WATER AT DISTANCE FROM DIFFUSER i.e., Supply for drinking water, Supply for agriculture including irrigation & stock water, Supply for a quaculture, Supply for industrial use, Contact recreation, Secondary recreation, Fish spawning, Harvesting and consumpti on of raw fish, or other aquatic life (Not needed if not requesting a mixing zone from ADEC):

If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser.



### Page 3 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Special Conditions ( provide justification for all that ar e not required, completed or provided)

Special Monitoring Required Not Required Justification:

Exploration Plans Attached Not Provided Justification: approved 2010 EP previously submitted to BOEMRE

Biological Surveys Attached Not Provided Justification: None required

Environmental Report(s) Attached Not Provided Justification: Submitted to BOEMRE as part of the 2010 Exploration Plan

Drilling Fluid Plan Complete Not Complete Justification: In Preparation



### Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the pe rson or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Date: 12/16/2010

Printed Name: Susan Childs Title: Alaska Support Intergrator Manager 

### Mail Completed NOI to EPA and ADE C at the following addresses:

US EPA 1200 6 th Avenue, M/S OWW-130 Seattle, WA 98101 ADEC, Water Division 555 Cordova Street Anchorage, Alaska 99501



### Page 4 of 4! !

! !



### Ch u k c h i S e aRussian EEZUS EEZ 

## A r c t i c O c e a n

N P R - A

Le d y a r d B ay Barrow

Atqasuk

Point Lay Wainwright 6764

156°W 156°W

160°W 160°W

164°W 164°W

168°W 168°W72°N72°N70°N70°N ^
^ Barrow

Nome

Juneau Seward Inuvik

Anchorage Fairbanks

Prince Rupert



### Vicinity Map

NOTICE OF INTENT AKG-28-0000 Posey Area Block 6764 Chukchi Sea 

# $ Notes:

Mercator Projection Standard Latitude 71 Deg N WGS84

Shell AV GIS/12-14-2010/AKG-28-0000_Fig1_v1.mxd 

### Legend

State/Fed Boundary

Lease Of Interest

OCS Leases

Shell Operated

Other OCS Lease

Scale: Figure:

1 SHELL

0 20 40 60 10 MilesTABLE 1 Types and Estimated Volume Ocean Discharges – Burger A Prospect

Type of Waste Total Amount to be Discharged Discharge Rate* Discharge Method Drill cuttings (from MLC through 26- inch section) Discharge 013 4,152 bbl/well (cuttings only; no drilling muds used) 346 bbl/day Mud Line Cellar (MLC) through 26” section cuttings deposited at the seafloor

WBM spent drilling fluids – Discharge 001 3,327 bbl/well spent mud plus mud in tanks (if multiple wells drilled per season, water based muds will be transferred to and used at the next well) 166 bbl/day (including discharge of excess water based drilling fluid at end of the drilling season) Discharged to sea through disposal caisson after 30:1 dilution with seawater

Cuttings from water based intervals – Discharge 001 1,664 bbl/well 83 bbl/day Discharged to sea through disposal caisson after 30:1 dilution with seawater

Sanitary waste – Discharge 003 960 bbl/well 30 bbl/day Treated in marine sanitary device prior to discharge to meet NPDES limits (based on 140 people at 9 gal/person/day) Domestic waste – Discharge 004 10,667 bbl/well 333 bbl/day Discharged to water through the disposal caisson (based on 140 people at 100 gal/person/day)

Note: all food waste to be incinerated Excess cement – Discharge 012 50 bbl/well Two occasions at 1 bbl/min Discharged at seafloor during 30-inch and 20-inch cementing operations

Desalination unit brine water – Discharge 005 4,000 bbl/well 125 bbl/day Discharged to water through disposal caisson

Deck drainage – Discharge 002 160 bbl/well 5 bbl/day (dependent on rainfall) Drains to the oily water separator. Uncontaminated water id discharged through the disposal caisson; contaminated water is stored in a waste oil tank then transferred by boat to an approved treatment/disposal site. Cooling water – Discharge 009 1,440,000 bbl/well 45,000 bbl/day Discharged to water through a number of outlets Firewater - Discharge 008 0 0 bbl/month No routine firewater system testing anticipated Ballast water – Discharge 010 160 bbl/well 5 bbl/day Discharged to sea through disposal caisson Bilge water – Discharge 011 404 bbl/well 13 bbl/day Treated in oily water separator, uncontaminated water discharged to sea through disposal caisson, oily water stored onboard, transferred for transport by boat to an approved disposal site BOP fluid – Discharge 006 42 bbl/well (6 tests; 7 bbl per test) 7 bbl/test Discharged subsea at BOP when testing BOP

* assumes 12 days to complete the MLC through 26-inch section; 20 days to complete the remainder of the wellFigure 1. Drilling Fluid FlowpathReturn from wellTo wellCement UnitSeawater fromGS headerMud CleanersMudChillerShale ShakersHP HeaderDischarge 009Mud PumpsCharge PumpShale PitMud Additivesfrom storesDischarge 001Clean mud toshale pitWorking andSuction PitsHigh SuctionLow Suction3 x ME CoolersOverboard DischargesHighSuctionLowSuctionEmergencyBilgeME Sea Water PumpChemical InjectionMain EngineTo Fire MainGS PumpR f i tiFigure 2. Main Engine Room NonContact Cooling Water FlowsTo Refrig.CondensersFire PumpRefrigerationCondenserContactCoolingWaterFlowsHelideckFrom Refrig.CondensersOverboard DischargesFire PumpOverboard DischargesSea SuctionTo Ballast System(Discharge 010)To- Hydraulic Coolers / HPCompressors / SCR Room ACcondensers then overboard via twodischarge lines. Also mud pit fillingsupply.General Service PumpTo Fire MainDischarge 009Fire PumpsBiocideInjectionTo Ballast TanksDischarge 010)Discharge010)SuctionBallast PumpsTo Bilge TankBilge PumpsSuctionOverboard DischargesDischarge 011Figure 3. Pump Room Sea WaterFlowsSea Suction withStrainerFigure 4. Sivulliq N GeneratorRoom Sea Water FlowsChemicalInjectionGenerator Cooling Pumps6 x CAT 399 Engines2 x EvaporatorsEvaporator PumpsChemicalInjectionOverboard DischargesDischarge 002 (after runSea Suctionwith Strainerthrough the oily wasteseparator system)C t U itTo Flare Boom stationTo wellCementUnitfrom Centrifuge DrainsMud CoolersShale ShakersMud PumpsDischarge 009OverboardDischargeWash water fromcement pumpCuttings Trough (outbd)Dump Trough (inbd)Charge PumpCharge PumpDischarge 001Figure 5Mud Pump Room Sea Water Flows2 x SW PumpsChemicalFigure5.MudPumpRoomSeaWaterFlowsSchematicSEA SUCTIONC e caTreatmentOily Water Separator System

### Discharge Caisson

T he discharge caisson is a pipe that runs vertically through the sponson on the hull of the drillship from the main deck level to the base of the sponson. The sponson is an exterior reinforced cladding installed on the Discoverer to provide ice resistance. It is hollow and extends from the main deck level to well below the water line.

Waste streams are collected aboard the drillship to a point on the main deck near the mud room. A 15-in. diameter pipe exits the hull, turns downwards and is connected to the top of the discharge caisson.

The discharge caisson, also a 15-in OD pipe, is welded into the sponson top and bottom (so that the interior of the sponson remains dry). The bottom of the sponson and the end of the discharge caisson is 5.6 ft (1.7 m) above the keel depth, and since it remains open to the sea at all times, the discharge caisson is constantly filled with water to mean sea level. This caisson is not equipped with a "float" valve; it is merely an open conduit to the sea through which most waste streams are discharged below sea level.

The Discoverer

has the following draft characteristics:

Max draft at load line: 27 ft (8.2 m) Transit draft 26.3 ft (8.0 m) Drilling draft 25.2 ft (7.7 m) Light ship draft 19.0 ft (5.8 m)

With the bottom of the sponson 5.6 ft above the keel, the base of the discharge caisson while drilling is 25.2 ft – 5.6 ft = 19.6 ft (6.0 m) below mean sea level. Because of heave, the water level inside the caisson is constantly changing.

See attached schematic drawings:

### Ship’s Hull Sponson Discharge Caisson

### Sponson 

### Top, Discharge Caisson

Section B-B Base, Discharge Caisson SponsonPermit No.: AKG280000



### ATTACHMENT 1



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

APPLICANT ( Owner/Operator)
Owner Name: Shell Gulf of Mexico Inc. Operator Mailing Address: 3601 C Street Telephone Number: 907-770-3700 Suite 1000 Operator Name: Shell Gulf of Mexico Inc. Anchorage, AK 99503 Telephone Number: 907-770-3700 

### FACILITY Facility Name: Noble Discoverer Facility Mailing Address: 3601 C Street Contact Name: Susan Childs Suite 1000 Telephone Number: 907-770-3700 Anchorage, AK 99503 Beginning Date of Operation: TBD Stationary Facilities Latitude:

Expected Duration of Operation: 32 days per well site Longitude:

Facility Type (check applicable type) Jackup

Mobile Facilities Initial Latitude: TBD Drill Ship
Semisubmersible Other (specify): Initial Longitude: TBD

Submit a site map showing the exact location of facility and discharges associated with the project. Mobile facilities may designate an area where they may be operating and must include a map showing those areas and a description of operations within those areas. If the discharge is within 4000 meters of an environmentally sensitive area indicated by the permit, those areas and their distance from th e operation/discharge must be shown on the map. 

### RECEIVING WATER
Chukchi Sea Other ( specify ):

Beaufort Sea Supply confirmation with the U.S. Department of State and NOAA that the discharge is seaward of the inner boundary baseline, if applicable. 

### LOCATION OF DISCHARGE

MMS Lease Number 

### OCS-Y-2267 ADNR Lease Number 

### N/A
Block Number 

### Posey Area Block 6714 Block Number 

### N/A

Range of water depths below mean lower low water (MLLW) in the lease block: From: 

### 148' To: 

### 148'

Page 1 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Discharges ( check all that apply) 001 Drilling Mud and Cuttings Water Depth: 

### 19.6' 002 Deck Drainage Water Depth: 

### 19.6' 003 Sanitary Waste Water Depth: 

### 19.6'
004 Domestic Waste Water Depth: 

### 19.6'
005 Desalination Unit Waste Water Depth: 

### 19.6'
006 Blowout Preventer Fluid Water Depth: 

### 148'
007 Boiler Blowdown Water Depth: 008 Fire Control System Test Water Water Depth: 009 Non-Contact Cooling Water Water Depth: 

### on the surface at several locations
010 Uncontaminated Ballast Water Water Depth: 

### 19.6' 011 Bilge Water Water Depth: 

### 19.6' 012 Excess Cement Slurry Water Depth: 

### 19.6' 013 Mud, Cuttings, Cement and Seafloor Water Depth: 

### MLC through 26" section cuttings at 138'; excess cement at 148'
014 Test Fluid Water Depth: Provide a brief description of the treatment process(es) and disposal practices (e.g., backhauled, reinjected, discharged, etc.) at the facility. See attached (Table 1) Provide a line drawing that shows flow of discharged wast e streams through the facility. Indicate intake sources, operations contributing to the effluent, and treatment units labeled to correspond to the discharges (001 – 014). Construct a flow balance on the line drawing by showing average flows between intakes, operations, treatment units, and outfalls. If a flow balance cannot be determined, provide a pictorial description of the nature and amount of any sources, and any collection or treatment measures. 

### Well Information
Well Name: 

### Burger Latitude: 

### TBD
Well Number: 

### F Longitude: 

### TBD

Beginning Drill Date: 

### TBD Hole Diameter or Estimated Total Discharge Volume: 

### 36" diameter at surface, reducing through 4 stages to 8.5" at depth Drilling Fluid

Category ( check all that apply ) Water-based

Group ( check all that apply ) Lignosulfonate

Oil-based Lime Synthetic-based Gyp Other ( specify ): Sea-waterSaltwater
Saturated Saltwater Nondispersed (Viscosifier/Polymer) PH/PA



### Page 2 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Zone of Deposit Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a Zone of Deposit from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A ZONE OF DEPOSIT. The burden of proof for justifying a zone of deposit through demonstrating compliance with the requirements of 18 AAC 70.210 rests with the applicant. Distance from shorelin e of discharge point (measured at M.L.L.W.): Average Mud density: Depth of discharge (measured at M.L.L.W.): Flow Rate:

Orientation of outfall to shoreline (e.g., perpendicular, 45 ° , parallel): Total Volume:

Orientation of outfall to water surface (e.g., perpendicular, 45 ° , parallel): Maximum current and direction: If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser. 

### Mixing Zone Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a mixing zone from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A MIXING ZONE. The burden of proof for justifying a mixing zone through demonstrating compliance with the requirements of 18 AAC 70.240 through 18 AAC 70.270 rests with the applicant. Distance from shoreline of discharge point or first port of diffuser (meas ured at M.L.L.W.): Length of diffuser:
Depth of discharge port or diffuser (measured at M.L.L.W.): Diameter of port(s):

Orientation of diffuser to shoreline (e.g., perpendicular, 45 ° , parallel): Number of ports:

Maximum current: Port spacing:
USE OF RECEIVING WATER AT DISTANCE FROM DIFFUSER i.e., Supply for drinking water, Supply for agriculture including irrigation & stock water, Supply for a quaculture, Supply for industrial use, Contact recreation, Secondary recreation, Fish spawning, Harvesting and consumpti on of raw fish, or other aquatic life (Not needed if not requesting a mixing zone from ADEC):

If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser.



### Page 3 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Special Conditions ( provide justification for all that ar e not required, completed or provided)

Special Monitoring Required Not Required Justification:

Exploration Plans Attached Not Provided Justification: approved 2010 EP previously submitted to BOEMRE

Biological Surveys Attached Not Provided Justification: None required

Environmental Report(s) Attached Not Provided Justification: Submitted to BOEMRE as part of the 2010 Exploration Plan

Drilling Fluid Plan Complete Not Complete Justification: In Preparation



### Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the pe rson or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties fo r submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Date: 12/16/2010

Printed Name: Susan Childs Title: Alaska Support Intergrator Manager 

### Mail Completed NOI to EPA and ADE C at the following addresses:

US EPA 1200 6 th Avenue, M/S OWW-130 Seattle, WA 98101 ADEC, Water Division 555 Cordova Street Anchorage, Alaska 99501



### Page 4 of 4! !

! !



### Ch u k c h i S e aRussian EEZUS EEZ 

## A r c t i c O c e a n

N P R - A

Le d y a r d B ay Barrow

Atqasuk

Point Lay Wainwright 6714

156°W 156°W

160°W 160°W

164°W 164°W

168°W 168°W72°N72°N70°N70°N ^
^ Barrow

Nome

Juneau Seward Inuvik

Anchorage Fairbanks

Prince Rupert



### Vicinity Map

NOTICE OF INTENT AKG-28-0000 Posey Area Block 6714 Chukchi Sea 

# $ Notes:

Mercator Projection Standard Latitude 71 Deg N WGS84

Shell AV GIS/12-14-2010/AKG-28-0000_Fig1_v1.mxd 

### Legend

State/Fed Boundary

Lease Of Interest

OCS Leases

Shell Operated

Other OCS Lease

Scale: Figure:

1 SHELL

0 20 40 60 10 MilesTABLE 1 Types and Estimated Volume Ocean Discharges – Burger F Prospect

Type of Waste Total Amount to be Discharged Discharge Rate* Discharge Method Drill cuttings (from MLC through 26- inch section) Discharge 013 4,152 bbl/well (cuttings only; no drilling muds used) 346 bbl/day* Mud Line Cellar (MLC) through 26” section cuttings deposited at the seafloor

WBM spent drilling fluids – Discharge 001 3,506 bbl/well spent mud plus mud in tanks (if multiple wells drilled per season, water based muds will be transferred to and used at the next well) 175 bbl/day (including discharge of excess water based drilling fluid at end of the drilling season) Discharged to sea through disposal caisson after 30:1 dilution with seawater

Cuttings from water based intervals – Discharge 001 1,753 bbl/well 88 bbl/day Discharged to sea through disposal caisson after 30:1 dilution with seawater

Sanitary waste – Discharge 003 960 bbl/well 30 bbl/day Treated in marine sanitary device prior to discharge to meet NPDES limits (based on 140 people at 9 gal/person/day) Domestic waste – Discharge 004 10,667 bbl/well 333 bbl/day Discharged to water through the disposal caisson (based on 140 people at 100 gal/person/day)

Note: all food waste to be incinerated Excess cement – Discharge 012 50 bbl/well Two occasions at 1 bbl/min Discharged at seafloor during 30-inch and 20-inch cementing operations

Desalination unit brine water – Discharge 005 4,000 bbl/well 125 bbl/day Discharged to water through disposal caisson

Deck drainage – Discharge 002 160 bbl/well 5 bbl/day (dependent on rainfall) Drains to the oily water separator. Uncontaminated water id discharged through the disposal caisson; contaminated water is stored in a waste oil tank then transferred by boat to an approved treatment/disposal site. Cooling water – Discharge 009 1,440,000 bbl/well 45,000 bbl/day Discharged to water through a number of outlets Firewater - Discharge 008 0 0 bbl/month No routine firewater system testing anticipated Ballast water – Discharge 010 160 bbl/well 5 bbl/day Discharged to sea through disposal caisson Bilge water – Discharge 011 404 bbl/well 13 bbl/day Treated in oily water separator, uncontaminated water discharged to sea through disposal caisson, oily water stored onboard, transferred for transport by boat to an approved disposal site BOP fluid – Discharge 006 42 bbl/well (6 tests; 7 bbl per test) 7 bbl/test Discharged subsea at BOP when testing BOP

* assumes 12 days to complete the MLC through 26-inch section; 20 days to complete the remainder of the wellFigure 1. Drilling Fluid FlowpathReturn from wellTo wellCement UnitSeawater fromGS headerMud CleanersMudChillerShale ShakersHP HeaderDischarge 009Mud PumpsCharge PumpShale PitMud Additivesfrom storesDischarge 001Clean mud toshale pitWorking andSuction PitsHigh SuctionLow Suction3 x ME CoolersOverboard DischargesHighSuctionLowSuctionEmergencyBilgeME Sea Water PumpChemical InjectionMain EngineTo Fire MainGS PumpR f i tiFigure 2. Main Engine Room NonContact Cooling Water FlowsTo Refrig.CondensersFire PumpRefrigerationCondenserContactCoolingWaterFlowsHelideckFrom Refrig.CondensersOverboard DischargesFire PumpOverboard DischargesSea SuctionTo Ballast System(Discharge 010)To- Hydraulic Coolers / HPCompressors / SCR Room ACcondensers then overboard via twodischarge lines. Also mud pit fillingsupply.General Service PumpTo Fire MainDischarge 009Fire PumpsBiocideInjectionTo Ballast TanksDischarge 010)Discharge010)SuctionBallast PumpsTo Bilge TankBilge PumpsSuctionOverboard DischargesDischarge 011Figure 3. Pump Room Sea WaterFlowsSea Suction withStrainerFigure 4. Sivulliq N GeneratorRoom Sea Water FlowsChemicalInjectionGenerator Cooling Pumps6 x CAT 399 Engines2 x EvaporatorsEvaporator PumpsChemicalInjectionOverboard DischargesDischarge 002 (after runSea Suctionwith Strainerthrough the oily wasteseparator system)C t U itTo Flare Boom stationTo wellCementUnitfrom Centrifuge DrainsMud CoolersShale ShakersMud PumpsDischarge 009OverboardDischargeWash water fromcement pumpCuttings Trough (outbd)Dump Trough (inbd)Charge PumpCharge PumpDischarge 001Figure 5Mud Pump Room Sea Water Flows2 x SW PumpsChemicalFigure5.MudPumpRoomSeaWaterFlowsSchematicSEA SUCTIONC e caTreatmentOily Water Separator System

### Discharge Caisson

T he discharge caisson is a pipe that runs vertically through the sponson on the hull of the drillship from the main deck level to the base of the sponson. The sponson is an exterior reinforced cladding installed on the Discoverer to provide ice resistance. It is hollow and extends from the main deck level to well below the water line.

Waste streams are collected aboard the drillship to a point on the main deck near the mud room. A 15-in. diameter pipe exits the hull, turns downwards and is connected to the top of the discharge caisson.

The discharge caisson, also a 15-in OD pipe, is welded into the sponson top and bottom (so that the interior of the sponson remains dry). The bottom of the sponson and the end of the discharge caisson is 5.6 ft (1.7 m) above the keel depth, and since it remains open to the sea at all times, the discharge caisson is constantly filled with water to mean sea level. This caisson is not equipped with a "float" valve; it is merely an open conduit to the sea through which most waste streams are discharged below sea level.

The Discoverer

has the following draft characteristics:

Max draft at load line: 27 ft (8.2 m) Transit draft 26.3 ft (8.0 m) Drilling draft 25.2 ft (7.7 m) Light ship draft 19.0 ft (5.8 m)

With the bottom of the sponson 5.6 ft above the keel, the base of the discharge caisson while drilling is 25.2 ft – 5.6 ft = 19.6 ft (6.0 m) below mean sea level. Because of heave, the water level inside the caisson is constantly changing.

See attached schematic drawings:

### Ship’s Hull Sponson Discharge Caisson

### Sponson 

### Top, Discharge Caisson

Section B-B Base, Discharge Caisson SponsonPermit No.: AKG280000



### ATTACHMENT 1



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

APPLICANT ( Owner/Operator)
Owner Name: Shell Gulf of Mexico Inc. Operator Mailing Address: 3601 C Street Telephone Number: 907-770-3700 Suite 1000 Operator Name: Shell Gulf of Mexico Inc. Anchorage, AK 99503 Telephone Number: 907-770-3700 

### FACILITY Facility Name: Noble Discoverer Facility Mailing Address: 3601 C Street Contact Name: Susan Childs Suite 1000 Telephone Number: 907-770-3700 Anchorage, AK 99503 Beginning Date of Operation: TBD Stationary Facilities Latitude:

Expected Duration of Operation: 32 days per well site Longitude:

Facility Type (check applicable type) Jackup

Mobile Facilities Initial Latitude: TBD Drill Ship
Semisubmersible Other (specify): Initial Longitude: TBD

Submit a site map showing the exact location of facility and discharges associated with the project. Mobile facilities may designate an area where they may be operating and must include a map showing those areas and a description of operations within those areas. If the discharge is within 4000 meters of an environmentally sensitive area indicated by the permit, those areas and their distance from th e operation/discharge must be shown on the map. 

### RECEIVING WATER
Chukchi Sea Other ( specify ):

Beaufort Sea Supply confirmation with the U.S. Department of State and NOAA that the discharge is seaward of the inner boundary baseline, if applicable. 

### LOCATION OF DISCHARGE

MMS Lease Number 

### OCS-Y-2321 ADNR Lease Number

Block Number 

### 6912 Block Number Range of water depths below mean lower low water (MLLW) in the lease block: From: 

### 144' To: 

### 144'

Page 1 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Discharges ( check all that apply) 001 Drilling Mud and Cuttings Water Depth: 

### 19.6' 002 Deck Drainage Water Depth: 

### 19.6' 003 Sanitary Waste Water Depth: 

### 19.6'
004 Domestic Waste Water Depth: 

### 19.6'
005 Desalination Unit Waste Water Depth: 

### 19.6'
006 Blowout Preventer Fluid Water Depth: 

### 144'
007 Boiler Blowdown Water Depth: 008 Fire Control System Test Water Water Depth: 009 Non-Contact Cooling Water Water Depth: 

### on the surface at several locations
010 Uncontaminated Ballast Water Water Depth: 

### 19.6' 011 Bilge Water Water Depth: 

### 19.6' 012 Excess Cement Slurry Water Depth: 

### 19.6' 013 Mud, Cuttings, Cement and Seafloor Water Depth: 

### MLC through 26" section cuttings at 134', excess cement at 144'
014 Test Fluid Water Depth: Provide a brief description of the treatment process(es) and disposal practices (e.g., backhauled, reinjected, discharged, etc.) at the facility. See attached (Table 1) Provide a line drawing that shows flow of discharged wast e streams through the facility. Indicate intake sources, operations contributing to the effluent, and treatment units labeled to correspond to the discharges (001 – 014). Construct a flow balance on the line drawing by showing average flows between intakes, operations, treatment units, and outfalls. If a flow balance cannot be determined, provide a pictorial description of the nature and amount of any sources, and any collection or treatment measures. 

### Well Information
Well Name: 

### Burger Latitude: 

### TBD
Well Number: 

### J Longitude: 

### TBD

Beginning Drill Date: 

### TBD Hole Diameter or Estimated Total Discharge Volume: 

### 36" diameter at surface, reducing through 4 stages to 8.5" at depth Drilling Fluid

Category ( check all that apply ) Water-based

Group ( check all that apply ) Lignosulfonate

Oil-based Lime Synthetic-based Gyp Other ( specify ): Sea-waterSaltwater
Saturated Saltwater Nondispersed (Viscosifier/Polymer) PH/PA



### Page 2 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Zone of Deposit Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a Zone of Deposit from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A ZONE OF DEPOSIT. The burden of proof for justifying a zone of deposit through demonstrating compliance with the requirements of 18 AAC 70.210 rests with the applicant. Distance from shorelin e of discharge point (measured at M.L.L.W.): Average Mud density: Depth of discharge (measured at M.L.L.W.): Flow Rate:

Orientation of outfall to shoreline (e.g., perpendicular, 45 ° , parallel): Total Volume:

Orientation of outfall to water surface (e.g., perpendicular, 45 ° , parallel): Maximum current and direction: If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser. 

### Mixing Zone Request ( applicable to those discharges within state of Alaska waters)

Are you requesting a mixing zone from ADEC? Yes ( continue filling out this section ) No ( skip this section and proceed to Special Conditions, below )
THE FOLLOWING INFORMATION MUST BE PROVIDED IF REQUESTING A MIXING ZONE. The burden of proof for justifying a mixing zone through demonstrating compliance with the requirements of 18 AAC 70.240 through 18 AAC 70.270 rests with the applicant. Distance from shoreline of discharge point or first port of diffuser (meas ured at M.L.L.W.): Length of diffuser:
Depth of discharge port or diffuser (measured at M.L.L.W.): Diameter of port(s):

Orientation of diffuser to shoreline (e.g., perpendicular, 45 ° , parallel): Number of ports:

Maximum current: Port spacing:
USE OF RECEIVING WATER AT DISTANCE FROM DIFFUSER i.e., Supply for drinking water, Supply for agriculture including irrigation & stock water, Supply for a quaculture, Supply for industrial use, Contact recreation, Secondary recreation, Fish spawning, Harvesting and consumpti on of raw fish, or other aquatic life (Not needed if not requesting a mixing zone from ADEC):

If possible, provide salinity and temperatur e data from the receiving water surface to the depth of the discharge port or diffu ser.



### Page 3 of 4Attachment 1: NOI Inform ation Sheet Permit No.: AKG280000



## NOTICE OF INTENT (NOI ) IFORMATION SHEET
NPDES GENERAL PERMIT AKG280000 OIL AND GAS EXPLORATION FACILITIES ON THE OUTER CONTINENTAL SHEL F AND CONTIGUOUS STATE WATERS

Special Conditions ( provide justification for all that ar e not required, completed or provided)

Special Monitoring Required Not Required Justification:

Exploration Plans Attached Not Provided Justification: approved 2010 EP previously submitted to BOEMRE

Biological Surveys Attached Not Provided Justification: None required

Environmental Report(s) Attached Not Provided Justification: Submitted to BOEMRE as part of the 2010 Exploration Plan

Drilling Fluid Plan Complete Not Complete Justification: In Preparation



### Certification I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the pe rson or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Signature: Date: 12/16/2010

Printed Name: Susan Childs Title: Alaska Support Intergrator Manager 

### Mail Completed NOI to EPA and ADE C at the following addresses:

US EPA 1200 6 th Avenue, M/S OWW-130 Seattle, WA 98101 ADEC, Water Division 555 Cordova Street Anchorage, Alaska 99501



### Page 4 of 4! !

! !



### Ch u k c h i S e aRussian EEZUS EEZ 

## A r c t i c O c e a n

N P R - A

Le d y a r d B ay Barrow

Atqasuk

Point Lay Wainwright 6912

156°W 156°W

160°W 160°W

164°W 164°W

168°W 168°W72°N72°N70°N70°N ^
^ Barrow

Nome

Juneau Seward Inuvik

Anchorage Fairbanks

Prince Rupert



### Vicinity Map

NOTICE OF INTENT AKG-28-0000 Posey Area Block 6912 Chukchi Sea 

# $ Notes:

Mercator Projection Standard Latitude 71 Deg N WGS84

Shell AV GIS/12-14-2010/AKG-28-0000_Fig1_v1.mxd 

### Legend

State/Fed Boundary

Lease Of Interest

OCS Leases

Shell Operated

Other OCS Lease

Scale: Figure:

1 SHELL

0 20 40 60 10 MilesTABLE 1 Types and Estimated Volume Ocean Discharges – Burger J Prospect

Type of Waste Total Amount to be Discharged Discharge Rate* Discharge Method Drill cuttings (from MLC through 26- inch section) Discharge 013 4,152 bbl/well (cuttings only; no drilling muds used) 346 bbl/day Mud Line Cellar (MLC) through 26” section cuttings deposited at the seafloor

WBM spent drilling fluids – Discharge 001 3,378 bbl/well spent mud plus mud in tanks (if multiple wells drilled per season, water based muds will be transferred to and used at the next well) 169 bbl/day (including discharge of excess water based drilling fluid at end of the drilling season) Discharged to sea through disposal caisson after 30:1 dilution with seawater

Cuttings from water based intervals – Discharge 001 1,689 bbl/well 84 bbl/day Discharged to sea through disposal caisson after 30:1 dilution with seawater

Sanitary waste – Discharge 003 960 bbl/well 30 bbl/day Treated in marine sanitary device prior to discharge to meet NPDES limits (based on 140 people at 9 gal/person/day) Domestic waste – Discharge 004 10,667 bbl/well 333 bbl/day Discharged to water through the disposal caisson (based on 140 people at 100 gal/person/day)

Note: all food waste to be incinerated Excess cement – Discharge 012 50 bbl/well Two occasions at 1 bbl/min Discharged at seafloor during 30-inch and 20-inch cementing operations

Desalination unit brine water – Discharge 005 4,000 bbl/well 125 bbl/day Discharged to water through disposal caisson

Deck drainage – Discharge 002 160 bbl/well 5 bbl/day (dependent on rainfall) Drains to the oily water separator. Uncontaminated water id discharged through the disposal caisson; contaminated water is stored in a waste oil tank then transferred by boat to an approved treatment/disposal site. Cooling water – Discharge 009 1,440,000 bbl/well 45,000 bbl/day Discharged to water through a number of outlets Firewater - Discharge 008 0 0 bbl/month No routine firewater system testing anticipated Ballast water – Discharge 010 160 bbl/well 5 bbl/day Discharged to sea through disposal caisson Bilge water – Discharge 011 404 bbl/well 13 bbl/day Treated in oily water separator, uncontaminated water discharged to sea through disposal caisson, oily water stored onboard, transferred for transport by boat to an approved disposal site BOP fluid – Discharge 006 42 bbl/well (6 tests; 7 bbl per test) 7 bbl/test Discharged subsea at BOP when testing BOP

* assumes 12 days to complete the MLC through 26-inch section; 20 days to complete the remainder of the wellFigure 1. Drilling Fluid FlowpathReturn from wellTo wellCement UnitSeawater fromGS headerMud CleanersMudChillerShale ShakersHP HeaderDischarge 009Mud PumpsCharge PumpShale PitMud Additivesfrom storesDischarge 001Clean mud toshale pitWorking andSuction PitsHigh SuctionLow Suction3 x ME CoolersOverboard DischargesHighSuctionLowSuctionEmergencyBilgeME Sea Water PumpChemical InjectionMain EngineTo Fire MainGS PumpR f i tiFigure 2. Main Engine Room NonContact Cooling Water FlowsTo Refrig.CondensersFire PumpRefrigerationCondenserContactCoolingWaterFlowsHelideckFrom Refrig.CondensersOverboard DischargesFire PumpOverboard DischargesSea SuctionTo Ballast System(Discharge 010)To- Hydraulic Coolers / HPCompressors / SCR Room ACcondensers then overboard via twodischarge lines. Also mud pit fillingsupply.General Service PumpTo Fire MainDischarge 009Fire PumpsBiocideInjectionTo Ballast TanksDischarge 010)Discharge010)SuctionBallast PumpsTo Bilge TankBilge PumpsSuctionOverboard DischargesDischarge 011Figure 3. Pump Room Sea WaterFlowsSea Suction withStrainerFigure 4. Sivulliq N GeneratorRoom Sea Water FlowsChemicalInjectionGenerator Cooling Pumps6 x CAT 399 Engines2 x EvaporatorsEvaporator PumpsChemicalInjectionOverboard DischargesDischarge 002 (after runSea Suctionwith Strainerthrough the oily wasteseparator system)C t U itTo Flare Boom stationTo wellCementUnitfrom Centrifuge DrainsMud CoolersShale ShakersMud PumpsDischarge 009OverboardDischargeWash water fromcement pumpCuttings Trough (outbd)Dump Trough (inbd)Charge PumpCharge PumpDischarge 001Figure 5Mud Pump Room Sea Water Flows2 x SW PumpsChemicalFigure5.MudPumpRoomSeaWaterFlowsSchematicSEA SUCTIONC e caTreatmentOily Water Separator System

### Discharge Caisson

T he discharge caisson is a pipe that runs vertically through the sponson on the hull of the drillship from the main deck level to the base of the sponson. The sponson is an exterior reinforced cladding installed on the Discoverer to provide ice resistance. It is hollow and extends from the main deck level to well below the water line.

Waste streams are collected aboard the drillship to a point on the main deck near the mud room. A 15-in. diameter pipe exits the hull, turns downwards and is connected to the top of the discharge caisson.

The discharge caisson, also a 15-in OD pipe, is welded into the sponson top and bottom (so that the interior of the sponson remains dry). The bottom of the sponson and the end of the discharge caisson is 5.6 ft (1.7 m) above the keel depth, and since it remains open to the sea at all times, the discharge caisson is constantly filled with water to mean sea level. This caisson is not equipped with a "float" valve; it is merely an open conduit to the sea through which most waste streams are discharged below sea level.

The Discoverer

has the following draft characteristics:

Max draft at load line: 27 ft (8.2 m) Transit draft 26.3 ft (8.0 m) Drilling draft 25.2 ft (7.7 m) Light ship draft 19.0 ft (5.8 m)

With the bottom of the sponson 5.6 ft above the keel, the base of the discharge caisson while drilling is 25.2 ft – 5.6 ft = 19.6 ft (6.0 m) below mean sea level. Because of heave, the water level inside the caisson is constantly changing.

See attached schematic drawings:

### Ship’s Hull Sponson Discharge Caisson

### Sponson 

### Top, Discharge Caisson

Section B-B Base, Discharge Caisson Sponson