NATIONAL RESPONSE CENTER 1-800-424-8802 *** For Public Use *** Information released to a third party shall comply with any applicable federal and/or state Freedom of Information and Privacy Laws Incident Report # 817119 INCIDENT DESCRIPTION *Report taken at 12:47 on 04-NOV-06

Incident Type: VESSEL

Incident Cause: EQUIPMENT FAILURE Affected Area: GULF OF MEXICO

The incident occurred on 04-NOV-06 at 11:00 local time.

Affected Medium: WATER   GULF OF MEXICO

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SUSPECTED RESPONSIBLE PARTY

Organization:         DIAMOND OFFSHORE DRILLING

HOUSTON, TX 77210

Type of Organization: PRIVATE ENTERPRISE

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INCIDENT LOCATION

County: MISSISSIPPI CANYON State: LA Latitude: 28 Degrees 27' 9" N

Longitude: 88 Degrees 6' 3" W SEE LAT AND LONG

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RELEASED MATERIAL(S)

CHRIS Code: NCC    Official Material Name: NO CHRIS CODE

Also Known As:  SYNTHETIC BASED MUD

Qty Released: 127 BARREL(S)           Qty in Water: 127 BARREL(S)

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DESCRIPTION OF INCIDENT

CALLER STATED THAT WHILE DISPLASING MUD IT WAS ACCIDENTLY PUMPED OVER INTO THE  WATER.

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INCIDENT DETAILS

Platform Rig Name: Platform Letter: Location Area ID: MISSISSIPPI CANYON Location Block ID: OCSG Number: OCSP Number: State Lease Number: OCS-G-0883 Pier Dock Number: Berth Slip Number:

---WATER INFORMATION--- Body of Water: GULF OF MEXICO Tributary of: Nearest River Mile Marker: Water Supply Contaminated: UNKNOWN

---VESSEL INFORMATION--- Name: OCEAN CONFIDENCE Number: Aground: NO Flag: Length: Breadth: Draught: Type: OTHER Hull Construction: Fuel Capacity: Fuel on Board: Cargo Capacity: Cargo on Board:

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DAMAGES

Fire Involved: NO   Fire Extinguished: UNKNOWN

INJURIES:

NO

Hospitalized:

Empl/Crew:

Passenger:

FATALITIES:

NO

Empl/Crew:

Passenger:

Occupant:

EVACUATIONS:

NO

Who Evacuated:

Radius/Area:

Damages:

NO

Length of

Direction of

Closure Type

Description of Closure

Closure

Closure

Air:

N

Road:

N

Major  Artery:

N

Waterway:

N

Track:

N

Passengers Transferred: NO

Environmental Impact: UNKNOWN

Media Interest: NONE  Community Impact due to Material: NO

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REMEDIAL ACTIONS

SHUT VALVE

Release Secured: YES Release Rate: Estimated Release Duration:

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WEATHER

Weather: PARTLY CLOUDY, 65ºF

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ADDITIONAL AGENCIES NOTIFIED

Federal:

NONE

State/Local:

NONE

State/Local On Scene:

NONE

State Agency Number:

N/A

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NOTIFICATIONS BY NRC

USCG HSOC AT DHS (USCG HSOC DESK)

04-NOV-06

12:58

CG INVESTIGATIVE SERVICE HQ (PRIMARY)

04-NOV-06

12:58

DOT CRISIS MANAGEMENT CENTER (PRIMARY)

04-NOV-06

12:58

FLD INTEL SUPPORT TEAM NEW ORLEANS (SUPERVISOR, FIST NEW ORLEANS)

04-NOV-06

12:58

JFO-LA (COMMAND CENTER)

04-NOV-06

12:58

LA DEPT OF ENV QUAL (PRIMARY)

04-NOV-06

12:58

LA OFFICE OF EMERGENCY PREPAREDNESS (PRIMARY)

04-NOV-06

12:58

LA OFFICE OF GOV ATTN ROLAND GUIDRY (PRIMARY)

04-NOV-06

12:58

LA OFFICE OF PUBLIC HEALTH (PRIMARY)

04-NOV-06

12:58

MSO MORGAN CITY (PRIMARY)

04-NOV-06

13:00

NATIONAL INFRASTRUCTURE COORD CTR (PRIMARY)

04-NOV-06

12:58

NOAA RPTS FOR LA (PRIMARY)

04-NOV-06

12:58

LA STATE POLICE (PRIMARY)

04-NOV-06

12:58

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ADDITIONAL INFORMATION

NO ADDITIONAL INFORMATION

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*** END INCIDENT REPORT #

817119

***