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UPDATE Montana Pipeline River Crossings PHMSA\Office of Pipeline Safety 2/8/2012

UPDATE Montana Pipeline River Crossings PHMSAOffice of Pipeline Safety 2/8/2012. Focus. Petroleum pipelines (crude oil and refined products) Major river crossings (greater than 100 feet) Located in Montana and rivers flowing into Montana Constructed with open-trench technology

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UPDATE Montana Pipeline River Crossings PHMSA\Office of Pipeline Safety 2/8/2012

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  1. UPDATEMontana Pipeline River CrossingsPHMSA\Office of Pipeline Safety2/8/2012

  2. Focus • Petroleum pipelines (crude oil and refined products) • Major river crossings (greater than 100 feet) • Located in Montana and rivers flowing into Montana • Constructed with open-trench technology • Exposed or lack of depth-of-cover • River characteristics

  3. Information Collected or Obtained • Depth of Cover Surveys • Mainline Valve Alignment Sheets & Actuation Method • Worst Case Discharge • Integrity Threats Reports/Studies • Analysis Used for Remedial Actions (stream flow, depth-of-cover Remedial Actions taken in 2011 • Short-term Remedial Action Schedule • Long-term Remedial Action Schedule • Procedures to Monitor During Flood Conditions

  4. Progress Since July 2011 Release • ExxonMobil • HDD completed: Yellowstone River (Laurel) • HDD completed: Rock Creek • HDD completed: Clark’s Fork • CHS • Musselshell River: sandbag and increased patrolling • 3rd party analysis on Musselshell River • HDD will be complete before spring runoff

  5. EMPL - Preparing Pipe for Installation Under Yellowstone River - 8/27/11

  6. CHS Musselshell HDD – 2/6/12

  7. Progress Since July 2011 Release Cont. • ConocoPhillips • Depth-of-Cover surveys conducted for all major crossings • Belt Creek: added cover • Judith River: Grout bags/spring monitoring • Beauvais Creek: HDD completed • Coure d’Alene River: Grout bags/temporary repairs (Campground Rd, Sliver Bridge & Mile Post 476) • Beaver Creek: Line lowered (Refrigerator Canyon & Winston) • Tongue River (WY): Grout bags/spring monitoring

  8. Progress Since July 2011 Release Cont. • KinderMorgan • Clark Fork of Yellowstone River; Greybull River; Musselshell River: depth-of-cover surveys • Marathon (Wyoming) • Shoshone River; Wind River; Big Horn River: depth-of-cover surveys • True (Bridger Pipeline) • Poplar River/Missouri: Took out of service during flooding event • Yellowstone River and Poplar River: 2011 depth-of-cover surveys conducted and show adequate cover

  9. Montana River Crossings * Note: Montana Refining less than 5 miles with no water crossings

  10. Planned Remediation Measures • ExxonMobil • Monitor as normal (3 crossings were HDD’d since July 2011). Implement procedures to monitor during flooding • CHS • Musselshell River: HDD planned before 2012 spring runoff • Tongue River: HDD planned in 3-5 years • KinderMorgan • Monitor as normal. Implement procedures to monitor during flooding conditions • Marathon • Monitor as normal. Implement procedures to monitor during flooding conditions

  11. ConocoPhillips • Yellowstone Pipe Line: HDD across Clark Fork River at MP 319.1 (just east of Missoula) before Spring runoff • Yellowstone Pipe Line: stabilize with grout bags across East Gallatin River at MP 148.3 and install MOV before 2012 spring runoff & plan HDD in 2012 • Glacier Pipe Line: stabilize with grout bags across Judith River at MP 207.5 before 2012 spring runoff; 2012 HDD • Glacier Pipe Line: Monitor & plan future mitigation across Missouri River at MP 269.3 (stable bedrock trenched crossing) • Seminoe Pipe Line: Big Horn River – 2012 HDD • Other Remediation has been risk ranked for completion • True (Bridger Pipeline) • Yellowstone River and Poplar River: Continue to monitor through depth of cover surveys and ILI

  12. PHMSA’s Immediate Area of Focus • What is PHMSA’s immediate focus for 2012 Spring Runoff: • CHS • Musselshell River: Exposed line. FinishHDD by end of 2/2012 • Conoco Phillips • Clark Fork: Install HDD prior to 2012 runoff • East Gallatin River (MP 148.3): Exposed line. 2012 plan to install motor-operated valve before spring runoff. HDD later in 2012 • Missouri River (MP 269.3): Exposed line in stable bedrock trenched crossing. 2015 plan - Either HDD, New Trenched Crossing, Armoring, or Line Lowering

  13. Next Steps • Continue collecting and aggregating data • Monitor planned on-going remediation activities • Inspect new construction and remediation activities of water crossings • Ongoing information exchange with State, including the need for safety enhancements at water crossings • Develop enforcement actions for operator’s not following remedial action plans

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