APPENDIX D HAZARD EVALUATIONS / WORST CASE DISCHARGE CALCULATIONS

Transcription

1 APPENDIX D HAZARD EVALUATIONS / WORST CASE DISCHARGE CALCULATIONS D.1 Hazard Identification 2 D.1.1 Tank Leak, Rupture or Overfill 2 D.1.2 Tank Truck Leak or Overfill 2 D.1.3 Piping or Valve Rupture or Leak 2 D.1.4 Vessel Rupture or Leak 3 D.1.5 Description of Transfers 3 D.2 Vulnerability Analysis 3 D.2.1 Land Planning Distance 4 D.2.2 Water Planning Distance 4 D.2.3 Total Geographic Area Which May be Affected by a Spill 5 D.2.4 Description of Area Within Planning Boundaries 5 D.2.5 Analysis of the Potential for an Oil Spill 5 D.3 Refinery 6 D.3.1 Worst Case Discharge Calculation 6 D.3.2 Small Discharge Calculation 7 D.3.3 Medium Discharge Calculation 8 D.4 Pipelines 8 D.4.1 Murphy East/West Pipeline 8 D.5 Discharge Scenarios 9 D.6 Personnel and Equipment Required for Worst Case Discharge 9 Figure D.1 - Discharge Scenarios 10 March 2006 Page D - 1

2 D.1 HAZARD IDENTIFICATION Potential spill sources from the refinery are identified below. There are no surface impoundments located at this facility. D.1.1 Tank Leak, Rupture or Overfill A list of stationary spill sources is contained in APPENDIX C, FIGURE C.5. This figure identifies all storage tanks and includes maximum capacity, product stored, age of tank, and volume of secondary containment area. All secondary containment areas have adequate capacity to hold the entire contents of the largest tank plus additional freeboard for precipitation. Tank filling and discharge operations are monitored by refinery personnel to prevent overflow and spillage. D.1.2 Tank Truck Leak or Overfill There is a potential for a spill to occur during tank truck loading operations. Tank truck loading operations utilize meters with set stops to prevent overfilling. In addition, the loading platform is paved and runoff is directed to a sump. Discharge from the sump pump is transported to the waste treatment system. Visual inspections are conducted during transfer operations. Equipment inspected includes pipelines, pumps, valves, and fittings. Before any vehicle is filled, the lowermost drain valves and all outlets are checked for leakage. If leakage is detected, valves are tightened, adjusted, or replaced as necessary to repair the leak prior to filling. Before transfer lines are disconnected, it is confirmed that the transfer has been completed. Before departure, the vehicle is closely examined to ensure that there is no leakage from any outlet. D.1.3 Piping or Valve Rupture or Leak There is a potential for a spill to occur from piping or valves. Routine visual inspection is conducted daily for evidence of leaks, splits, cracks, bulges, or corrosion. Any deterioration of pumps, valves, seals, and fittings are also noted. Detailed inspections are performed if there is evidence of a potential failure. Types of inspection which may be performed include hydrostatic and ultrasonic testing. March 2006 Page D - 2

3 D.1.4 Vessel Rupture or Leak There is a potential for a spill to occur from process equipment and vessels. Routine visual inspection is conducted daily to ensure that unusual conditions or defective equipment that may result in an unsafe condition or spill are identified and repaired in a timely manner. Process equipment and vessels undergo detailed inspections on an annual basis or during unit turnarounds. Inspection methods may include ultrasonic and radiographic tests in accordance with ASME and ASNT requirements. D.1.5 Description of Transfers The total average daily transfer volume, for all facility product transfers, is identified as follows. Crude 34,770 Barrels per day All products 36,270 Barrels per day Crude transfers must be shut down manually by the operator monitoring the transfer operation. Product transfers can be shut down manually or automatically when a loss of line pressure is detected by the emergency shutdown system. Loading and unloading transfers for transportation vehicles occur at the Product Truck Loading Area and Rail Car Loading Area. Product transfers to the truck loading dock may be interrupted by use of a single panic button located in the loading dock area. Refer to APPENDIX D.1.2 for description of tank truck loading operations, and APPENDIX C 3.0 and TABLE 1. D.2 VULNERABILITY ANALYSIS The purpose of the vulnerability analysis is to identify populated areas, environmentally sensitive areas, businesses, schools, or medical facilities within the planning distance that may be affected by a spill at this facility. The planning distance is calculated separately for land and water, as follows: March 2006 Page D - 3

4 D.2.1 Land Planning Distance The extent of the planning distance on land is a function of topography, size of spill, weather conditions, and existence of objects which block the path of oil movement. All drainage from the refinery exits via Newton Creek. During non-rainfall conditions, Newton Creek's only flow is from the refinery's outfall. Newton Creek drains to the north into Superior Bay at Hog Island inlet (a distance of approximately 1.5 miles). A spill originating at the refinery, if not contained on-site, would drain into Newton Creek and would reach Superior Bay in approximately 12 hours, if not contained before then. Therefore, the land planning distance is approximately 1.5 miles. An oil spill which originates from the Murphy West Facility and escapes secondary containment areas may reach Superior Bay due to close proximity and drainage patterns. D.2.2 Water Planning Distance Spill Originating From Refinery After a spill traversed Newton Creek and entered Superior Bay, low currents in the bay would cause spilled oil to move into Lake Superior after approximately nine hours in the water (21 total hours after oil is spilled, including land travel). The oil would reach Lake Superior through the entry between Minnesota and Wisconsin Point. Oil movement would be limited once in Lake Superior due to minimal currents. Spill Originating From Murphy West Facility Drainage from this Facility enters Superior Bay directly via a small unnamed slip. After a spill reaches Superior Bay, previously measured currents indicate an average velocity of.235 feet per second (846 feet per hour) in a southerly direction. This results in a 27 hour spill movement of approximately 4.3 miles. Therefore, a spill at this facility is not likely to enter Lake Superior (entrance to Lake Superior is approximately five miles). March 2006 Page D - 4

5 D.2.3 Total Geographic Area Which May be Affected by a Spill Spill Originating From Refinery The total geographic area which may be affected by a spill in a 27 hour period includes Newton Creek from the refinery to Superior Harbor, the portion of Superior Harbor between Hog Island and the inlet to Lake Superior, and a small portion of Lake Superior in the vicinity of Wisconsin Point. Spill Originating From Murphy West Facility The total geographic area which may be affected by a spill in a 27 hour period includes Superior Bay from Connors Point to just north of the inlet to Lake Superior. D.2.4 Description of Area Within Planning Boundaries Newton Creek is a low flow creek with wide, deep banks. The creek flows through industrial and residential areas and a park. A spill in Newton Creek is not expected to impact adjacent businesses or residences. Since all drainage flows into Newton Creek from surrounding areas, it is not possible for oil to escape the creek. Oil in Newton Creek would be entirely contained within the banks of the creek, until it enters Superior Bay. There are no schools, medical facilities, businesses, water intakes or recreational facilities directly adjacent to the banks of Newton Creek. No impact to private or public utilities would result from a spill into Newton Creek. Newton Creek is not considered an environmentally sensitive area. A thorough description of Superior Bay and Lake Superior is contained in SECTION 3. D.2.5 Analysis of the Potential for an Oil Spill The probability of a spill occurring at the MOUSA facility is minimal due to frequent inspections of tanks and flow lines. Inspections ensure that tanks and lines are constructed to engineering standards, all free from corrosion and leaks due to tank/line age. The MOUSA facility is vulnerable to natural disasters such as tornadoes, lighting strikes and earthquakes. March 2006 Page D - 5

6 D.3 REFINERY During the past five years, all spills at the refinery have been contained onsite and were primarily the result of mechanical failures. Secondary containment devices were adequate to prevent the spills from impacting Newton Creek. The potential for a spill to impact an area outside the refinery is remote. In addition, storage tanks are inspected frequently, and replaced when necessary to maintain integrity. There are appropriate safeguards on site to prevent a spill from exiting the refinery. All drainage from the refinery is in the direction of Newton Creek. There is a gate at the entrance to Newton Creek that can be closed to prevent flow into the creek. Refinery personnel have been trained to close this gate in the event of a spill that has the potential for offsite impact. In addition, a spill offsite would be limited to the banks of the Newton Creek, which is not considered an environmentally sensitive area. It is estimated that it takes approximately 12 hours for a spill to reach Superior Bay, via Newton Creek. Due to this low flow rate, if a spill did impact the creek, it is likely that it could be contained via construction of temporary dams or other containment devices. D.3.1 Worst Case Discharge Calculation The Superior Refinery Complex (EPA/DOT) has adequate secondary containment for all of aboveground storage tanks. In addition, all tanks are operated in such a manner that each tank functions as a separate unit. Therefore, the worst case discharge for the Refinery, as defined in 40 CFR 112, Appendix E, is equal to the capacity of the largest tank within a secondary containment area. The worst case discharge for the Superior Refinery is the loss of the entire contents of tank number 25, which has a capacity of 216,451 barrels. Because the discharge for the EPA portion of the facility is greater than the RSPA definition for a worst case discharge, response resources are planned for the greater of the two volumes. These response resources are described in APPENDIX B. Complex Worst Case Discharge: 216,451 Barrels Product: Crude Oil = Group III Emulsification Factor: 2.0 Area Impacted: Inland/Nearshore Great Lakes Planned % On-Water Recovery: 50% Planned % Oil Onshore: 50% March 2006 Page D - 6

7 Planned Volumes for On-Water Recovery: 216,451 x 2.0 x.50 = 216,451 Barrels Planned Volumes for Onshore Recovery: 216,451 x 2.0 x.50 = 216,451 Barrels Resource Capability Required (Cumulative Effective Daily Recovery Capacity in 6, 30, and 54 Hours): Tier 1:.15 x 216,451 Barrels = 32,468 Barrels, Cap = 5,000 Barrels Tier 2:.25 x 216,451 Barrels = 54,113 Barrels, Cap = 10,000 Barrels Tier 3:.40 x 216,451 Barrels = 86,580 Barrels, Cap = 20,000 Barrels Because the calculated cumulative effective daily recovery capacity exceeds the caps, as given in 40 CFR 112, response resources required to be contracted for are: Great Lakes Area: Tier 1 (within 6 hours): 5,000 Barrels Tier 2 (within 30 hours): 10,000 Barrels Tier 3 (within 54 hours): 20,000 Barrels Amount of recovery capability to be identified but not contracted for in advance is: Tier 1: 27,468 Barrels Tier 2: 24,113 Barrels Tier 3: 66,580 Barrels Daily storage capacity identified is required to be at least twice of the effective daily storage capacity required on-scene. This is equal to: Tier 1 (within 6 hours): 5,000 barrels x 2 = 10,000 barrels Tier 2 (within 30 hours): 10,000 barrels x 2 = 20,000 barrels Tier 3 (within 54 hours): 20,000 barrels x 2 = 40,000 barrels There is ample storage capacity at the refinery to accommodate these volumes. Depending upon the location and size of the spill, tanks 34, 35, and 214 can be utilized and contain approximately 50,000 barrels storage capacity. Additional tankage can be made available as required. D.3.2 Small Discharge Calculation By definition, a small discharge is equal to 2,100 gallons (50 barrels) or less, therefore, response resources are planned for 50 barrels. March 2006 Page D - 7

8 D.3.3 Medium Discharge Calculation D.4 PIPELINES A medium discharge is equal to 36,000 gallons (857 barrels) or ten percent of the capacity of the largest above ground tank, whichever is less. Ten percent of largest above ground tank = 21,645 barrels The Worst Case Discharge (WCD) for pipelines as defined by the DOT-RSPA regulations are as follows: The WCD is the largest volume, in barrels, of: Maximum release time in hours, plus maximum shutdown response time in hours (based on historic data or operator's best estimate) multiplied by maximum flow rate expressed in barrels per hour (based on the maximum daily capacity of the pipeline) plus the drainage volume after shutdown of the pipeline; or Largest discharge for line section within response zone based on maximum historic discharge adjusted for any subsequent corrective or preventive action; or The capacity of the single largest breakout tank or battery of breakout tanks within a single containment system, adjusted for the capacity of the containment system. D.4.1 Murphy East/West Pipeline The WCD for the Murphy East/West Pipeline is as follows: Maximum Pumping Rate is approximately 1200 barrels per hour Maximum time to detect and shutdown pipeline is 0.5 hours, since pipeline is constantly monitored during pumping operations Pipeline capacity is 1026 barrels The WCD is calculated as follows: WCD = [(Maximum time to detect spill and shutdown pipeline x maximum flow rate) + maximum drainage volume WCD = [(0.5 hours x 1200 barrels/hour) barrels WCD = 1626 barrels (Murphy East/West Pipeline) March 2006 Page D - 8

9 D.5 DISCHARGE SCENARIOS This Plan provides general response considerations, resources, and response team structure for spills of all magnitude. The Plan is designed to provide the responders with the tools to respond to any size spill scenario including small, medium, and large spills. In addition, the Plan provides general descriptions of drainage patterns, areas of potential impact, spill mitigation procedures, and methods to estimate size and trajectory of any oil spill. These scenarios are described in FIGURE D.1. D.6 PERSONNEL AND EQUIPMENT REQUIRED FOR WORST CASE DISCHARGE Initially, boom would be called out in an attempt to limit the spread of spilled oil. Each boom deployment team would utilize approximately four response personnel and two boats to deploy each boom segment. The number of teams required and amount of boom would depend upon the magnitude and direction of the winds. Skimming equipment would be brought out in anticipation of handling 216,450 barrels of oil. Murphy would utilize spare refinery tanks, portable tanks and barges for storage of recovered product. Murphy anticipates obtaining approval to decant recovered water in front of the skimmers to minimize the amount of storage and disposal required. Adequate equipment and trained personnel are available from the response contractors in the area. March 2006 Page D - 9

10 FIGURE D.1 - DISCHARGE SCENARIOS A. SMALL DISCHARGE (EPA/DOT COMPLEX) INCIDENT At 0730 hours an Operator notices oil emanating from the refinery's outfall. The Operator immediately closes the valve on the SPCC dam and stops the source of the spill. It is estimated that approximately 50 barrels of fuel oil has spilled and is moving down Newton Creek. Newton Creek drains to Superior Bay. Time for the spill to reach the Bay is estimated at 12 hours. ENVIRONMENTAL CONDITIONS Weather: Forecast: Light rain, visibility less than 1.0 mile, temperature 57 o F, winds from the South at 10 miles per hour. Cloudy, high 82 o F, light rain expected to end by 1030 hours, winds to continue from the South at 10 knots. MITIGATION AND NOTIFICATION The Operator immediately implements procedures to secure the source of the spill. The Operator then notifies the Shift Foreman. The Shift Production Foreman notifies the Refinery Manager, agencies, and the Area Superintendent. A summary of Murphy personnel and agency notifications are as follows: Murphy Notifications: 1. Shift Foreman 2. Area Superintendent 3. Refinery Manager 4. MOUSA Refining Manager Regulatory Notifications: 1. National Response Center 2. Wisconsin Department of Natural Resources 3. USCG MSO - Duluth 4. Douglas County Emergency Management 5. Wisconsin Emergency Government March 2006 Page D - 10

11 PRODUCT CHARACTERISTICS AND SAFETY PRECAUTIONS As noted in the Safety guidelines in SECTION 8, prior to entering a spill area, a operations personnel must perform an initial safety and health evaluation of the site. The Safety Officer first evaluate MSDS information on the spilled fuel oil and determines that Hydrogen Sulfide and benzene levels are characteristically low and do not present a health risk for the clean-up workers or the community. The Safety Officer then performs appropriate air monitoring tests to characterize the spilled product. Appropriate personnel protective devices will be selected based on results of the air sampling. Following the completion of these screening procedures, the Safety Officer develops the appropriate measures to be taken by responders while on site. CONTAINMENT AND CLEANUP The immediate goals of the Response Team are as follows: ensure the safety of all personnel eliminate the source of the spill mitigate the impact of the spill make the necessary internal and external notifications Once the goals of the immediate response activities have been accomplished the Incident Commander calls out selected members of the Murphy Emergency Response Team including the Safety Officer, Information Officer, Operations Section Chief, and Planning Section Chief. The organization chart of the Emergency Management Team is illustrated in SECTION 5. The following is a brief outline of the activities which the Response Team implements for this phase of the response. The Incident Commander directs the Planning Section Chief to evaluate the location of sensitive areas and water intakes. The Planning Section Chief reveals that there are no water intakes in the vicinity of the area and also notes that there are no sensitive areas until Superior Bay. The spill will likely drain into Newton Creek, which is not sensitive, however, a priority will be to contain the spill prior to it reaching Superior Bay. After consultation with the Operations Section Chief, the Incident Commander contacts J&D Services and requests that they respond to the spill with equipment to dam the Creek and remove the spilled product, prior to it reaching Newton Creek. Personnel can be dispatched to the site in approximately two hours. March 2006 Page D - 11

12 Murphy will contact a local construction company to attempt to construct an underflow dam downstream of the leading edge of the spill, immediately following approval from the Safety Officer to enter the spill area. In addition, a vacuum trucks will be brought to the site to recover oil and transport it back to the refinery. After consulting with the Shift Superintendent, the Incident Commander confirms that approximately 50 barrels of fuel oil has been spilled. The Incident Commander contacts the Wisconsin Department of Natural Resources to discuss the clean-up strategy. The agency concurs with plans to contain and clean up the spill and will send representatives to the scene to monitor progress. While awaiting the arrival of construction equipment and J&D Services personnel, field personnel monitor the spill location and procure materials to construct an underflow dam. The Disposal Unit Leader, whose duties and responsibilities are stated in Section 5, will coordinate the disposal of the recovered oil/water mixture, debris, and absorbent that have been collected. At 0830, the construction company arrives and works to install a dam, approximately 1,000 feet north of the refinery. J&D Services arrives approximately one hour later and assists in the containment efforts. The effort is supervised by the Operations Section Chief. The response crew is successful in containing the product. Vacuum trucks are utilized to recover the oil and transport it back to the refinery for processing. Once the utilization of the skimmers becomes ineffective, the remainder of the oil/sheen is picked up with absorbent boom/pads. Contaminated soil is removed and disposed of. All clean-up equipment is cleaned in order to prevent further sheening. The entire clean-up process takes approximately two days. The Incident Commander convenes an Incident Summary meeting with Response Team members. The objectives of the meeting are to determine what could have been done to prevent the incident and how they could have improved their response/ clean-up activities. A report is presented by the Incident Commander stating the materials and expendable used during the spill response and subsequent clean-up operation. All materials are promptly replaced and suggestions to improve future response activities are considered. March 2006 Page D - 12

13 B. MEDIUM DISCHARGE (EPA/DOT COMPLEX) INCIDENT At 0600 hours, an Operator notices oil going through the refinery's outfall. The Gauger traces the source of the spill to a leak in a gasoline storage tank (number 57). The leak has penetrated the earthen dam surrounding the tanks. The Operator estimates the spill to be in excess of 10,000 barrels, but won t know the exact amount until reviewing the tank gauges. ENVIRONMENTAL CONDITIONS Weather: Forecast: Light rain, temperature 75 o F, winds from the south at 6 knots. Winds to continue from the South at 6 knots. NOTIFICATION The Operator immediately implements procedures to secure the source of the spill. The Operator then notifies the Shift Foreman. The Shift Production Foreman notifies the Refinery Manager, agencies, and the Area Superintendent. A summary of Murphy personnel and agency notifications are as follows: Murphy Notifications: Shift Foreman Area Superintendent Refinery Manager MOUSA Refining Manager Regulatory Notifications: National Response Center Wisconsin Department of Natural Resources USCG MSO - Duluth Douglas County Emergency Management Wisconsin Emergency Government March 2006 Page D - 13

14 PRODUCT CHARACTERISTICS AND SAFETY PRECAUTIONS As noted in the Safety guidelines in SECTION 8, prior to entering a spill area, a operations personnel must perform an initial safety and health evaluation of the site. The Safety Officer first evaluate MSDS information on the spilled gasoline and determines that Hydrogen Sulfide and benzene levels are characteristically low and do not present a health risk for the clean-up workers or the community. The Safety Officer then performs appropriate air monitoring tests to characterize the spilled product. Appropriate personnel protective devices will be selected based on results of the air sampling. Following the completion of these screening procedures, the Safety Officer develops the appropriate measures to be taken by responders while on site. INITIAL RESPONSE The immediate goals of the Response Team are as follows: ensure the safety of all personnel eliminate the source of the spill mitigate the impact of the spill make the necessary internal and external notifications Once the goals of the immediate response activities have been accomplished the Incident Commander calls out the entire Murphy Emergency Management Team. The organization chart of the Emergency Management Team is illustrated in SECTION 5. The following is a brief outline of the activities which the Response Team implements for this phase of the response. The Incident Commander directs the Planning Section Chief to evaluate the location of sensitive areas and water intakes and also to contract surveillance aircraft to survey the location of the leading edge of the spill and to evaluate extent of the damage. The Planning Section Chief reveals that there are no water intakes in the vicinity of the area and also notes that there are no sensitive areas until Superior Bay. The spill will likely drain into Newton Creek, and the priority will be to contain the spill prior to it reaching Superior Bay. After consultation with the Operations Section Chief, the Incident Commander contacts the Superior Fire Department and J&D Services and requests that they respond to the spill with equipment to dam the Creek and remove the spilled product, prior to it reaching Newton Creek. Personnel can be dispatched to the site in approximately two hours. Murphy will contact a local construction company to attempt to construct underflow dams in at least two locations downstream of the leading edge of the spill, immediately following approval from the Safety Officer to enter the spill area. In addition, as many vacuum trucks as can be located will be brought to the site to recover oil and transport it back to the refinery. March 2006 Page D - 14

15 The Safety Officer issues approval to enter the spill area, however, he cautions that the product is flammable, and all care must be exercised in eliminating ignition sources, and ensuring that vacuum trucks are properly grounded. The Incident Commander contacts the Wisconsin Department of Natural Resources to discuss the clean-up strategy. The agency concurs with plans to contain and clean up the spill and will send representatives to the scene to monitor progress. While awaiting the arrival of construction equipment and Fire Department personnel, field personnel monitor the spill location and procure materials to construct an underflow dam. The Disposal Unit Leader, whose duties and responsibilities are stated in SECTION 5, will coordinate the disposal of the recovered oil/water mixture, debris and absorbent that have been collected. The Incident Commander contacts the Wisconsin Department of Natural Resources and the U.S. Coast Guard MSO to discuss clean-up strategy. These strategies consist of: RESPONSE PLANNING Management. The Murphy Emergency Management Team will initiate response actions. Their actions will be supplemented by the Murphy Corporate Team. Murphy personnel will supervise spill response activities performed by the Fire Department and J&D Services. Incident Command. The Murphy Incident Commander will establish a unified command with the Federal On-Scene Coordinator and the State On-Scene Coordinator. Containment and Recovery. Containment dams will be constructed across the creek at the leading edge of the spill to contain the product and prevent the slick from moving further north into Superior Bay. Skimmers and vacuum trucks (where possible) will be used to recover trapped oil. Sorbent booms and pads will be utilized to absorb pockets of gasoline and residual sheens. Storage and Disposal. Sorbents and oiled debris will be containerized for temporary storage prior to disposal at an approved disposal facility. Recovered gasoline will be reprocessed at the refinery. The Disposal Unit Leader will coordinate the disposal of the debris and sorbent material that are collected. Response Equipment and Manpower. The Incident Commander will utilize the entire Oil Spill Response Team and will rely on the Fire Department and J&D Services to provide manpower and equipment for response operations. March 2006 Page D - 15

16 Shoreline Cleanup. Murphy, along with all concerned agencies, will review various shoreline clean-up techniques to determine which method(s) will be used depending on the shoreline type. This clean-up activity, if necessary, will be initiated upon approval. Wildlife Protection and Rehabilitation. Murphy will coordinate wildlife protection and rehabilitation with the Wisconsin Department of Natural Resources Game Warden. Personnel from the International Bird Rescue and Research Center will be notified and contracted as necessary to assist in operating a local center to care for oiled wildlife. Public Relations. Murphy will make a daily press release, as necessary, to keep the public informed about the oil spill and progress of the clean-up operations. Agency representatives agree with Murphy's plans for responding to the spill and also to agree to provide support for wildlife protection and in establishing response priorities. CONTAINMENT AND CLEANUP At 0830, the construction company arrives and works to install a dam, approximately 3,000 feet north of the refinery. The Fire Department and J&D services arrives and assists in the containment efforts. The effort is supervised by the Operations Section Chief. The response crew is successful in containing the product. An additional dam is also constructed prior to the entrance to Superior Bay in the event that any oil escapes containment. Vacuum trucks are utilized to recover the oil and transport it back to the refinery for processing. Once the utilization of the skimmers becomes ineffective, the remainder of the oil/sheen is picked up with absorbent boom/pads. Contaminated soil is removed and disposed of. All clean-up equipment is cleaned in order to prevent further sheening. The entire clean-up process takes approximately four weeks. The Incident Commander convenes an Incident Summary meeting with Response Team members. The objectives of the meeting are to determine what could have been done to prevent the incident and how they could have improved their response/ clean-up activities. A report is presented by the Incident Commander stating the materials and expendable used during the spill response and subsequent clean-up operation. All materials are promptly replaced and suggestions to improve future response activities are considered. March 2006 Page D - 16

17 C. WORST CASE DISCHARGE INCIDENT In accordance with the worst case discharge calculations in SECTION D.1, a spill of 216,451 barrels occurs. This is calculated as a result of a failure of the largest tank, which is tank number 25, and contains crude oil. The crude oil has entered a drainage canal which leads to the Nemadji River. ENVIRONMENTAL CONDITIONS Weather: Forecast: River Conditions: Heavy rain, temperature 75 o F, winds from the south at 6 knots. Rain expected to stop by mid morning, winds to continue from the South at 6 knots. One knot currents NOTIFICATION Notifications are as follows: Murphy Notifications: Shift Foreman Area Superintendent Refinery Manager MOUSA Refining Manager Regulatory Notifications: National Response Center Wisconsin Department of Natural Resources USCG MSO - Duluth Douglas County Emergency Management Wisconsin Emergency Government March 2006 Page D - 17

18 PRODUCT CHARACTERISTICS AND SAFETY PRECAUTIONS As noted in the Safety guidelines in SECTION 8, prior to entering a spill area, personnel must perform an initial safety and health evaluation of the site. The Safety Officer first evaluates MSDS information on the spilled crude oil and determines that Hydrogen Sulfide and benzene levels do not present a health risk for the clean-up workers or the community. Operations personnel perform appropriate air monitoring tests to characterize the spilled product. Appropriate personnel protective devices will be selected based on results of the air sampling. Following the completion of these screening procedures, the Safety Officer develops the appropriate measures to be taken by responders while on site. INITIAL RESPONSE The immediate goals of the Response Team are as follows: ensure the safety of all personnel eliminate the source of the spill mitigate the impact of the spill make the necessary internal and external notifications Once the goals of the immediate response activities have been accomplished, the task of final containment and cleanup are undertaken. The Incident Commander calls out the entire Superior Refinery Emergency Management Team and the MOUSA Corporate Team. The organization chart of the Emergency Management Team is illustrated in SECTION 5, the Team=s roster is shown in SECTION 4. The following is a brief outline of the activities which the Response Team implements for this phase of the response. The Incident Commander directs the Planning Section Chief to call out a surveillance helicopter to evaluate the location of the leading edge of the spilled crude oil and to assess the current damage. After consulting with the Shift Foreman, and verifying tank gauges, the Incident Commander confirms that approximately 216,451 barrels of crude oil has been spilled. The Incident Commander directs the Logistics Section Chief to call out manpower and equipment from the Superior Fire Department, J&D Services, Walker Centrifuge Services, OSI Environmental, Bay West and MSRC. Personnel can be dispatched to arrive at the spill site in approximately two hours. In addition, he directs the Logistics Section Chief to procure as many vacuum trucks as possible. March 2006 Page D - 18

19 The Incident Commander contacts the contractors and informs them that approximately 216,000 barrels of crude oil have been spilled. He states that considerable equipment and manpower will be needed. He also states that a surveillance helicopter will be on location in ten minutes to evaluate the spill position. Upon report of the spill location, he will recommend to contractors where to mobilize equipment. The Planning Section Chief reports to the Incident Commander that the leading edge of the spill has reached the Nemadji River, and is approximately one mile south of Superior Bay and that there is significant environmental impact. Impact to Superior Bay is anticipated. The river is environmentally sensitive as are several locations in Superior Bay. The Incident Commander directs the contractors to deploy boom at several locations on the river in attempt to direct oil to natural areas of accumulation and other areas where vacuum trucks and skimmers can access the River. In addition, equipment will be staged in Superior Bay to deflect and recover as much product as possible. The Incident Commander directs the Liaison Officer to contact the U.S. Coast Guard and restrict vessel traffic to allow access of response vessels and to limit further damage. Contractor personnel are expected to arrive at the spill site in approximately two hours, and will continue arriving throughout the day. The Planning Section Chief thoroughly reviews the Environmental Response Maps in SECTION 3 in order to ensure that all potential environmental and socioeconomic sensitivities are protected. There are environmentally sensitive shorelines throughout the area, however, there are no drinking water intakes. All shorelines are prioritized for protection. The Incident Commander contacts the Wisconsin Department of Natural Resources and the USCG MSO to discuss clean-up strategy. These strategies consist of: RESPONSE PLANNING Management. The Murphy Superior Spill Response Team will initiate response actions. Their actions will be supplemented by the Superior Fire Department, J&D Services, CEDA, OSI Environmental, Bay West and MSRC. The Superior Refinery Team will be supplemented by the MOUSA Corporate team, within eight hours. Murphy personnel will supervise spill response activities performed by the contractors. The Murphy Spill Response Team will remain in command of the incident. Incident Command. The Murphy Incident Commander will establish a unified command with the Federal On-Scene Coordinator and the State On-Scene Coordinator. March 2006 Page D - 19

20 Monitoring. Aerial surveillance will be performed during daylight hours to monitor spill movement and identify areas impacted by oil. Verification and adjustment of spill trajectories will be made as necessary, and incorporated into response planning. Environmentally and socioeconomically sensitive areas projected to be at risk of impact by spill trajectories will be closely monitored for signs of potential impact. Agency personnel will be invited to participate in the effort using aircraft chartered by Murphy. Containment and Recovery. Containment booms will be deployed across the river and oil will be herded to areas of natural accumulation for recovery by vacuum trucks and skimmers. Sorbent booms and pads will be utilized to absorb pockets of crude oil and residual sheens. Storage and Disposal. Sorbents and oiled debris will be containerized for temporary storage prior to disposal at an approved disposal facility. The Disposal Unit Leader will coordinate the disposal of the debris and sorbent material that are collected. Recovered oil will be recycled at the refinery to the maximum extent possible. Response Equipment and Manpower. The Murphy Incident Commander will utilize the entire Oil Spill Response Team and will rely on contractors to provide additional manpower and equipment for response operations. Shoreline Clean-up. Murphy, along with all concerned agencies, will review various shoreline clean-up techniques to determine which method(s) will be used depending on the shoreline type. This cleanup activity, if necessary, will be initiated upon approval. Wildlife Protection and Rehabilitation. Murphy will coordinate wildlife protection and rehabilitation with the Wisconsin Department of Natural Resources Game Warden. Personnel from the International Bird Rescue and Research Center will be notified and contracted as necessary to assist in operating a local center to care for oiled wildlife. State resource agency personnel will be requested to provide personnel to perform capture operations. Public Relations. Murphy will make a daily press release, as necessary, to keep the public informed about the oil spill and progress of the clean-up operations. Agency representatives agree with Murphy's plans for responding to the spill. State agencies agree to provide support for wildlife protection and in setting response priorities. Murphy also contacts the FAA to have them control the increase in air traffic over the spill site. In addition, Murphy requests the Department of Public Safety provide crowd and traffic control. March 2006 Page D - 20

21 CONTAINMENT AND CLEANUP While awaiting the arrival of contractor personnel, Response Team members monitor the movement and location of the oil and continue to refine their response strategy. The recovered oil/water mixture is temporarily stored. The Disposal Specialist, coordinates the disposal of the recovered oil/water mixture, debris, and absorbent that have been collected. Contractor personnel begin arriving on location. They immediately deploy boom in accordance with planned objectives. Recovery operations will be initiated on trapped pockets of oil and where oil has accumulated naturally. Once the usage of skimmers and vacuum trucks becomes ineffective, the remainder of the oil/sheen is picked up with absorbent boom/pads. All clean-up equipment is cleaned in order to prevent further sheening. The entire clean-up process takes approximately six weeks. The Incident Commander convenes an Incident Summary meeting with Response Team members. The objectives of the meeting are to determine what could have been done to prevent the incident and how they could have improved their response/ clean-up activities. A report is presented by the Incident Commander stating the materials and expendable resources used during the spill response and subsequent clean-up operation. All materials are promptly replaced and suggestions to improve future response activities are considered. March 2006 Page D - 21