SCAN UPDATE SEGMENT 13674 ROW OCS-G33443

United States Department of the Interior BUREAU OF SAFETY AND ENVIRONMENTAL ENFORCEMENT

GulfofMexico OCS Region 1201 Elmwood Park Boulevard

New Orleans, Louisiana 70123-2394

In Reply Refer To: GE 1035A

Ms. Sarah Lunsford Caesar Oil Pipeline Company, LLC P.O. Box 2648 Houston, TX 77252

Dear Ms. Lunsford:

January 15, 2019

Reference is made to Caesar Oil Pipeline Company, LLC'S (Ceaser) letter dated September 24, 2018, received by this office on October 23, 2018, clarifying demarcation line ofthe Right-of-way associated with Pipeline Segment No. (PSN) 13674 at Platform A (Mad Dog) in Green Canyon Area 782 (GC782A). Specifically, Ceaser clarified that the Right-of-way No. OCS-G23443 begins from the lower face ofthe flange directly above the SCR flexjoint on the riser associated with the PSN 13674.

The portion of the riser above the lower face of the flange directly above the SCR flex joint is a part of the platform GC782A(Mad Dog Spar) currently operated by BP Exploration and Production, Inc (BP). A letter dated September 26, 2018 from BP concurring with this clarification is also acknowledged. The portion above the lower face ofthe flange directly above the SCR flex joint on the riser is under the jurisdiction of BSEE, Houma District. BP or any subsequent operator should contact Houma District for permitting issues for this portion ofthe pipeline.

Ceaser has designated Shell Pipeline Company LP as an operator for the PSN 13674 associated with the Right-of-way No. OCS-G23443.

This office accepts your clarification and describes the Right-of-way No. OCS-G23443 as follows:

A 200-foot wide right-of-way to operate and maintain a 24-inch bidirectional pipeline, 21.03 miles in length, to transport oil from the lower face ofthe flange directly above the SCR flex joint on the riser at Platform A (Mad Dog Spar) in Block 782, through Blocks 738, 739, 695, 651, 650, 649, 648, 604 to a 24-inch subsea tie-in with Segment No. 13677 in Block 603, all in the Green Canyon Area.

Sincerely,

For: Bryan A. Domangue Acting Regional Supervisor Regional Field Operations

Cc: Denise McGuire Shell Pipeline Company LP P.O. Box 2648 Houston, TX 77252

Ms. Beth Atwood BP Exploration and Production, Inc 501 Westlake Park Blvd. Houston, TX 77079

Houma District, BSEE

September 24, 2018

Bureau of Safety and Environmental Enforcement Attention: Ms. Angie Gobert, GE1035A 1201 Elmwood Park Blvd. New Orleans, LA 70123

Oil Pipeline Company, LU Caesar Oil Pipeline Company, LLC

PO Box 2648 Houston, TX 77252-2648

R E C E I V E D OCT 2 3 2018

Office of Field Operations Pipeline Section

RE: NOTIFICATION OF OPERATORSHIP DEMARCATION -24" MAD DOG OIL LATERAL PIPELINE, ROW OCS-G23443, SEGMENT 13674 ROW HOLDER - CAESAR OIL PIPELINE COMPANY, LLC ROW OPERATOR OF RECORD - SHELL PIPELINE COMPANY LP PRODUCING OPERATOR-BP EXPLORATION & PRODUCTION INC. MAD DOG PLATFORM, GC782, OFFSHORE LOUISIANA

Dear Ms. Gobert:

Caesar Oil Pipeline Company LLC ("Caesar") hereby submits supporting documentation to reflect demarcation between the producing operator (BP Exploration & Production Inc.) and the transporting operator (Shell Pipeline Company LP) for 24" Mad Dog Oil Lateral Pipeline, OCS-G23443, Segment 13674 at GC782A Platform.

Segment No. 13674 originates at the Mad Dog facility (GC782A) and includes the SCR portion of the pipeline and a horizontal section extending along the seafloor on the ROW several miles eventually terminating subsea in GC Block 603. As per the Safety Flow Schematic MGT-INT-A-14-HS-DRW-0002-3 (copy attached) previously approved by BSEE on April 19, 2005, the producing operator, BP Exploration & Production Inc., is responsible forthe pipeline on the facility hull up to the SCR flexjoint. The responsibility of the transporting operator. Shell Pipeline Company LP, begins at the lower face of the flange directly above the SCR flexjoint.

By the attached letter dated September 26, 2018, BP Exploration & Production Inc. acknowledges their agreement with the aforementioned demarcation.

Ms. Angie Gobert Bureau ofSafety and Environmental Enforcement September 24, 2018

Should you have questions or need additional information, please contact:

Denise McGuire Sr. Land Agent, Offshore Shell Pipeline Company LP PO Box 2648

Houston, TX 77252-2648

832-762-2487 (Office) or Denise.McGuire@Shell.com

Sarah Lunsford Vice President Caesar Oil Pipeline Company, LLC

xc: Amy Wilson Pellegrin, BSEE Houma District Stephen Dessauer, BSEE Production Operations Jason Dollar, Shell Pipeline Company LP Reagan Nguyen, Shell Pipeline Company LP Michael Mitchel, Shell Pipeline Company LP Denise McGuire, Shell Pipeline Company LP Blair Hunt, Shell Pipeline Company LP Madhav Parimi, BP Exploration & Production Beth Atwood, BP Exploration & Production Elizabeth Komiskey, BP Exploration & Production

APR 19 2005 In Reply Refer To: MS 5232

Mr. Mike Vandenbossche Caesar O i l Pipeline Company, LLC 501 Westlake Park Boulevard Houston, Texas 77079

Dear Mr. Vandenbossche:

The Minerals Management Service has reviewed your completion report for the following pipeline;

Application Type: New Right-of-Way Pipeline Letter Date: February 21, 2005

Segment ROW Size Length Number Number (inches) (feet) Service From To

13674 G23443 24 111,042 Oil "A" Piatfom 24-inch SSTI Green Canyon Green Canyon Block 782 Block 603 OCS-G 15610 , OCS-G 21805

The t o t a l length of the "as-built" right-of-way i s 21.03 miles.

The report i s submitted i n accordance with 30 CFR 250.1008(b).

The data provided i n the report establishes the assigned maximum allowable operating pressure (MAOP) for the pipeline:

MAOP MAOP (psig) Determination

3,180 Subsea Segment

The high and low-pressure sensors shall be set no higher than 15 percent above and below the normal operating range, respectively. The high p i l o t , however, shall not be set higher than the MAOP of the pipeline. The pressure range shall be established by the use of pressure recorders.

Sincerely,

(orig. sgd.) A. P.

Donald C. Howard Regional Supervisor Field Operations

bcc: 1502-01 Segment No. 13674, ROW OCS-G 23443 (MS 5232) /1502-01 ROW OCS-G 23443 (Microfilm) (MS 5033) H?S~52-32 Cartography

BJohnsonsairan:03/18/05:Caesar-13674

arbi ras

February 21,2005

Attn: Pipeline Unit (MS 5232) Regional Supervisor, Field Operations Minerals Management Service 1201 Elmwood Park Blvd New Orleans, LA 70123

Re: As-built Pipeline Report Caesar Mad Dog Lateral Oil Pipeline MMS Segment 13674; ROW-G 23443

Gendemen:

Mardi Gras Transportation System Inc. 501 WestLake Park Blvd

Houston, Texas 77079 Phone: (281)365-3644

Fax: (281) 366-7910

In accordance with 30 CFR 250.1008(b), please find enclosed the plats and hydrostatic test data, in triplicate, for the following pipeline segment:

Segment Number

Designation Pennitted Length, ft

To TD Point, ft

As-Built Length, To TD Point, ft

Completed Date

First Opetation

Date

13674 24 Oil Pipeline from GC 782, Platform A to SSH GC 603

111,297 111,042 September 13, 2004

January 13, 2005

Hydtptgst The pipeline from the flex joint located on GC 782, Platform A to the PLET "P6" in GC 603 was hydrotested for 8 hours on June 28,2004. The pressure ranged from 4009.1 to 4013.8 psi. Following the hdydrotest, a spool piece was installed above the flex joint to job the SCR to the hull piping. This connection was leak tested for 1 hr to 3137 psi on September 7,2004.

The jumper connecting Segment 13674 (PLET P6) to Segment 13677 (Wye "WSA W6") was hydrotested onshore for 4 hours on August 13, 2004. The pressure ranged from 4000 to 4050 psi. Following the installation of the jumper offshore, the seals were tested to 2500 psi and 3650 psi for 30 minutes on September 13,2004.

Plats Please find enclosed the certified as-built plats for the subject pipeline. The pipeline did not substantifllly deviate from the approved route. Also enclosed is an ASCII file of the pipeline route as requited in NTL 98-09.

/

Anodes Anodes were installed on the pipeline as described in the pipeline application. In summary, the following

Pipeline Section Anode-Net Weight, lbs Spacing MOl 380 1 every 6 joints + 22 additional

anodes on the last 18 joints of pipe to protect the SCR

Spar HuUGC 782 770 15 slender standoff type indium activiated aluminium anodes provided on the spar hull to protect the Caesar Mad Dog and Cleopatra Mad Dog SCRs

J-lay collars that serve as buckle arrestors were installed as follows: n Section MOl: 1111 lb, 1 every 6 joints

Safety System Schematic Please find enclosed a revised safety system schematic for review and approval. Modifications to the drawing from the previously approved drawing are shown in the clouded areas. Please note that the change of operatorship has been designated on the drawing at the face of the flange above the Flexjoint.

As previously approved, the designated opetator of the subject pipeline is BP Pipelines (North America), Inc. The contact person for the Caesar Mad Dog Lateral Oil Pipeline (Segment 13674) is James Black who can be reached at (281)-366-4233 ot blackjp@,bp.com.

If you have any questions conceming this report, please contact our tegulatoty teptesentative, Wanda Patket, WJP Enterprises at 972-516-1177 or by e-mail at wanda.parket(S!wjpentetptises.com.

Very truly yours,

Mike Vandenbossche

LEGEND

DOUBLE BLOCK I AND BLEED VALVE

PILOT OPERATED PRESSURE SAFETY VALVE

PISTON OPERATED SHUTDOWN VALVE

PRESSURE CONTROL VALVE

FLOW 3AFETYVALVE C^l

PISTON OPERATED f f i l SPRING RETURN VALVE ^

FLANOE FO FAIL OPEN

ORIFICE METER FC FAIL CLOSED

PLATFORM SAFETY FL FAIL LAST POSITION SVSTEM

PUMP

FLOW INDICATOR

a PIPE EXPANDER

Q FLEXJOINT

SPRING OPERATED PRESSURE SAFETY VALVE FLOW

COMTROL VALVE

PL ) PIG LAUNCHER

@ PRESSURE SWITCH HIGH LOW

@ PRESSURE SWITCH HIGH

T O F U R E ^ ^ ® " " 8 * 3

A „ RECYCLE v^ZSi ( W COOLER

NOTES

. TRANSPORTING FACILTTIES COMPLY WITH TITLE « PART 165 OF THE COOE OF FEDERAL REQULATIONS.

. EXPORT PIPELINE FACILITIES DESIGN CRITERIA: MAXIMUM NORMAL INLET OPERATING PRESSURE 2,SXJ PBK3 ' MAXIMUM INLET OPERATING PRESSURE (MOP): 3,115 PSIQ MAXIMUM INLET TEMPERATURE: HOT

. HULL RISER, SCR. ANO PIPELINE WIU. BE PRESSURE TESTED FOR A MINIMUM'' OF 4 HOURS AT 1.25 MOP P,»W PSKJ) ANO 4 HOURS AT 1.1 MOP p,427 PSIO).

. EXPORT PIPELINE FACftJIY FLANGES AND FITTINGS ARE ASME B15.5. CLASS 1500 OR EQUIVALENT. AND DESIGNED FOR MOP.

. EXPORT PIPELINE FACILITY VALVES ARE API-8D, ASME CLASS 1500 OR EQUIVALENT, AND DESIGNED FOR MOP.

. EXPORT PIPBJNE IS EXTERNALLY COATED ANO CATHODICALLY PROIECI HI . "

. HULL RISER, SCR, AND EXPORT PIPELINE ARE API 5L X-M.

. EXPORT PIPELINE IS BH3IRECT10NAL

. ATOC 752 A PSHL'S WILL BE SET 1514 ABOVE AND BELOW NORMAL OPERATING PRESSURE

COMPONENT KAME IDENTIFIER

DIAMETER (INCHES)

WALL THICKNESS

(INCHES)

LENGTH (MILES)

GC782 ARIBER M03 24 1.033 540 FT (SUBSEA FUNGe) 24 N/A

-WbHoKif 24 -J«A -OC 782 ASCR M02 24 (. J 1.13 PIPELINE MOI 24 Wl SB.B0

TIE-INWTE wa 24 . TIE JN WIE W7 24 1.25 -PLET AND VALVE pa 24 IJS -TIE-IN JUMPER ja 24 1J5 130 FT

M l AVAILABLE COPY

END OF MAD DOO LATERAL

ja

PLET GCE03

CAESAR WVE GREEN CANYON AREA

BLOCK 00]

i m i tst. • MAO DOG LATERAL

CAESAR OIL PIPEUNE SYSTEM PIPELINE SAFETY SCHEMATIC

GREEN CANYON AREA

MGT - IMT - A . 14 . HS - DRW - O0O2 - 3

September 26, 2018

Ms. Angie Gobert Pipeline Section Chief Bureau of Safety and Environmental Enforcement 1201 Elmwood Park Boulevard New Orleans, Louisiana 70123-2394

Beth Atwood Lead Regulations 8t Permit Advisor Gulfof Mexico Region

BP Exploration & Production Inc. 501 Westlake Park Boulevard Houston, Texas 77079 Cell Phone: 281-615-4553 Email: Beth.Atwood@bp.com

RE: IMotification of Operatorship Demarcation 24-inch Mad Dog Oil Lateral Rlght-of-Way Pipeline Segment No. 13674, ROW G-23443 Originating in Green Canyon Block 782, Platform A, OCS-G15610 Receiving in Green Canyon Block 603, 24-inch SST, OCS-G21805 ROW Holder: Caesar Oil Pipeline Company, LLC (Company No: 02554)

Dear Ms. Gobert:

Caesar Oil Pipeline Company, LLC submitted the clarification notice for ROW G-23443, Segment number 13674, dated September 24, 2018. The notification identified the point of demarcation between the pipeline and the interconnect facilities on the Mad Dog platform from which the pipeline originates, as well as the responsibility for operations downstream of the point of demarcation (Shell Pipeline Company LP, Company No. 02289) vs. upstream of the point of demarcation (BP Exploration & Production Inc., Company No. 02481). BP Exploration & Production Inc. submits this letter to confirm that it supports the point of demarcation and respective responsibilities indicated in Caesar's notification. BP Exploration & Production Inc. further agrees that a reference to the associated ROW (OCS-G23443 and Segment Number (13674) wil l be included in future submittals for the section of pipeline for which BP Exploration & Production Inc. is responsible.

If you have any questions or require additional information, please contact Beth Atwood, Lead Regulations & Permit Advisor, at 281-615-4553 or by e-mail to Beth.Atwood@bp.com

Sincerely,

Beth Atwood Lead Regulations & Permit Advisor BP Mad Dog