enaissance Offshore

August 18, 2017

U.S. Department of the Interior Bureau of Safety and Environmental Enforcement 1201 Elmwood Park Boulevard New Orleans, Louisiana 70123-2394

Attention: Ms. Angie Gobert

Re: Supplemental Request for Departure of 6" SSTI, Segment No. 13755 (Right-of-Way No. 023717) Originating at Platform A, South Timbalier Block 317, Lease OCS-G 15349 and Terminating at Ship Shoal Block 332, Lease OCS-G 16401, OCS Federal Waters, Gulf of Mexico, Offshore, Louisiana

Dear Ms. Gobert:

In accordance with the provisions of Title 30 CFR 250.1008 (c). Renaissance Offshore, LLC (Renaissance) submitted a 60-day written notification that Segment No. 13755 was placed out-of-service July 17, 2016. The 6" gas Right-of-Way Pipeline originates at a South Timbalier Block 317 and tenninates at Ship Shoal Block 332.

Segment No. 13755 is a lateral SSTI pipeline to Williams (Transco) DOT Pipeline Segment No. 15187. The 15187 pipeline segment was placed out-of-service while preparations were being made to decommission and abandon Shell's South Timbalier 300 facility.

By letter dated August 3, 2017, Renaissance requested a departure from regulations contained in Title 30 CFR 250.1003 (b) (1). "Pipelines shall be pressure tested with water at a stabilized pressure of at least 1.25 times the MAOP for at least 8 hours when installed, relocated, uprated, or reactivated after being out-of-service for more than 1 year ".

By email dated August 11, 2017, the above mentioned departure request was denied; however, the Bureau of Safety Environmental Enforcement (BSEE) would review altemate procedures according to Title 30 CFR 250.141.

As per our telephone conversation August 15, 2017, Renaissance respectively submits a Supplemental Departure Request to perfonn a "Pressure Test" (reference attached).

920 Memorial City Way, Suite 800 Houston TX 77024P. 832.333.7700 F. 832.333.770hvww.renaissanceoffshore.com

In support of Renaissance's request, attached is a copy of the Pressure Test Procedure, Safety Flow Diagram, and Sub-sea Assembly for your review.

Renaissance's out-of-service anniversary date was July 17, 2017.

As requested in my email dated August 17, 2017, Renaissance would appreciate a short meeting in person to discuss further.

Should you have any questions or need additional information, please contact me at (832) 333-7766 or by email at icole@renaissanceoffshore.com or Mr. Greg Ruiz, Renaissance's Facility Engineer at (832) 333-7755 or by email at gruiz(g),renaissanceoffshore.com.

Sincerely,

Janet P. Cole Regulatory Manager

920 Memorial City Way, Suite 800 Houston TX 77024 P. 832.333.7700 F. 832.333.770hvww.renaissanceoffshore.com

PIPELINE SEGMENT 13755 - SSTI at BLOCK SS 332

Renaissance Pressure Test

Pressure Test Procedures

Mobilize ROV Vessel

Valve 1 to remain closed. See attachment 1.

Verify valves 2, 3, and 4 or open.

Verify valves at ST317 "A" gas bi-directional meter are closed. See attachment 2

Open valve 1 in attachment 1 until pipelines are at 300 psig and monitor at ST317 "A" and close

Valve 1.

Fly SSTI assembly with ROV to check for leaks. 30 Minutes

Ramp up pressure to 600 psig monitor at ST 317 "A" and fly SSTI assembly with ROV again to

check for leaks. 30 minutes

Ramp up pressure to 900 or stabilize less psig monitor at 317 "A" and fly SSTI assembly with ROV

again to check for leaks. 30 minutes.

Reposition ROV vessel to ST317 "A" check for any leaks of riser or pipeline tie-ins.

Fly ROV from ST317 "A" to SSTI SS 332 assembly to check for leaks.

Demobilize ROV Vessel

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SAFETY FLOW DIAGRAM

S F - S T 3 1 7 A - 3 Q I J . D W G EE SHEET 3 OF 3

enaissance Offshore

August 31, 2017

U.S. Department of the Interior Bureau of Safety and Environmental Enforcement 1201 Elmwood Park Boulevard New Orleans, Louisiana 70123-2394

Attention: Ms. Angie Gobert

Re: Supplemental Request for Departure of 6" SSTI, Segment No. 13755 (Right-of-Way No. 023717) Originating at Platform A, South Timbalier Biock 317, Lease OCS-G 15349 and Terminating at Ship Shoal Block 332, Lease OCS-G 16401, OCS Federal Waters, Gulf of Mexico, Offshore, Louisiana- Hydro-Test to Pressure Test

Dear Ms. Gobert:

In accordance with the provisions of Title 30 CFR 250.1008 (c). Renaissance Offshore, LLC (Renaissance) submitted a 60-day written notification that Segment No. 13755 was placed out-of-service July 17, 2016. The 6" gas Right-of-Way Pipeline originates at a South Timbalier Block 317 and terminates at Ship Shoal Block 332.

Segment No. 13755 is a lateral SSTI pipeline to Williams (Transco) DOT Pipeline Segment No. 15187. The 15187 pipeline segment was placed out-of-service while preparations were being made to decommission and abandon Shell's South Timbalier 300 facility.

By letter dated August 3, 2017, Renaissance requested a departure from regulations contained in Title 30 CFR 250.1003 (b) (1). "Pipelines shall be pressure tested with water at a stabilized pressure of at least 1.25 times the MAOP for at least 8 hours when installed, relocated, uprated, or reactivated after being out-of-service for more than 1 year ".

By email dated August 11, 2017, the above mentioned departure request was denied; however, the Bureau of Safety Environmental Enforcement (BSEE) would review altemate procedures according to Title 30 CFR 250.141.

920 Memorial Cily Way, Suite 800 Houston TX 77024 P. 832.333.7700 F. 832.333.7701www.renaissanceoffshore.com

As per our telephone conversation August 15, 2017 and subsequent meeting on August 25 th 2017, the following considerations are of focus for an alternate departure procedure request. The considerations are: allowances provided by Williams DOT 49 CFR 192.605 O&M- "Gas Pipeline Operations, Maintenance and Emergency Manual", "Safety Related Conditions", "Abnormal Operations", limiting pressure testing to 1400 psi, Williams' reactivation procedures concerning newly modified pipeline segment 15187, along with Sat. Diving operational personnel safety concerns due to water depth, historic process flow and mechanical soundness of gas pipeline segment 13755, and limiting environmental release by not disturbing proven components.

Therefore, Renaissance respectively submits a Supplemental Departure Request to perform a "Pressure Test" (reference attached) in lieu ofthe Title 30 CFR 250.1003 (b) (1). "Pipelines shall be pressure tested with water at a stabilized pressure of at least 1.25 times the MAOP for at least 8 hours when installed, relocated, uprated, or reactivated after being out-of-sei-vice for more than 1 year".

In support of Renaissance's request, attached is a copy of the Pressure Test Procedure, for your review.

Renaissance's out-of-service anniversary date was July 17, 2017.

Should you have any questions or need additional information, please contact me at (832) 333-7766 or by email at icole(a),renaissanceoffshore.com, Mr. Greg Ruiz, Renaissance's Facility Engineer at (832) 333-7755 or by email at gruiz(5)renaissanceoffshore.com or Troy Bourgeois, Production Superintendent at 832-333-7728 or at email at tbourgeois@renaissanceoffshore.com

Sincerely,

lames Eugene Ward /Ice President of Operations

920 Memorial City Way, Suite 800 Houston TX 77024 P. 832.333.7700 F. 832.333.770Jwww.renaissanceoffshore.com

PIPEUNE SEGMENT 13755

August 31, 2017

Renaissance Pressure Test

Pressure Test Procedures

1. Preform Job Planning Procedure and JSA (Job Steps, Potential Hazards, How to minimize

identified Hazards and responsible Party).

2. Mobilize ROV Vessel so SSTI Location.

3. Valve #1 is to remain closed during Williams' Leak Test and subsequent reactivation of Pipeline

Segment 15187. See below "2017-08-28 Subsea Valve Config."

4. R/U Natural Gas or N2 as an altemate source, supplying test media to pipeline segment 13755.

5. Verify Williams 'pipeline system 15187 is up to normal operating pressure of 800 to 900 psi.

6. Begin Pressure test of pipeline segment 13755, pressuring pipeline to 350 psi low (significantly

above hydrostatic water column), monitor surface gauge and run ROV from SSTI to ST-317 Riser,

if inclement weather allows also provide aerial surveillance e via field helicopter.

7. Hold 350 psi on pipeline segment 13755 for a minimum of 1 hour.

8. Raise Pressure to 1400 psi, run ROV from ST-317 to SSTI, continue monitoring surface pressure

gauge and fly line with aerial surveillance.

9. Hold 1400 psi on pipeline segment 13755 for a minimum of 8 hours.

10. Once confirmed that ROV and aerial visuals provide positive leak surveillance and no leaks, stop

test.

11. Reduce pressure in pipeline to balance upstream and downstream of valve #1 (800 to 900 psi).

12. Contact Williams

13. Open Valve #1.

14. Commence normal production flow.

15. If N2 is used as the pressure source, reduce pressure at least 150 psi below downstream

segment's 15187 whereby when valve #1 is opened, pipeline segment 13755 can be purged

from SSTI through ST-317 vent system with contaminating and of the Williams Pipeline System.

16. Demobilize ROV Vessel and equipment.

PIPELIIME SEGMENT 13755

August 31, 2017

Renaissance Pressure Test

North

13755 and 15187 SubSea TIE-IN SCHEMATIC

SS 332 Manta Ray Platform

To ST 300 tie-in Seg. 7410 DOT

Williams SSTI 16" - MAOP 1440 DOT - WD -400'

Customer to Transporter tine - DOI crossover To DOT

ROS Seg. 13755 MAOP 1440 tenglh30,332,6"Sch.80 ' ROSST317"A" P la t fo rm-WD-460 '