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Recent Responses HOVENSA Refinery

Recent Responses HOVENSA Refinery. Caribbean Regional Response Team Meeting The Palms at Pelican Cove, St. Croix, USVI May 10-12, 2011. Objectives. Overview of Three Recent Releases From HOVENSA No. 2 Distillate Desulfurizer (2DD): 9/19/2010 Low Pressure Flair (LP Flair): 9/30/2010

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Recent Responses HOVENSA Refinery

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  1. Recent ResponsesHOVENSA Refinery Caribbean Regional Response Team Meeting The Palms at Pelican Cove, St. Croix, USVI May 10-12, 2011

  2. Objectives • Overview of Three Recent Releases From HOVENSA • No. 2 Distillate Desulfurizer (2DD): 9/19/2010 • Low Pressure Flair (LP Flair): 9/30/2010 • Delayed Coker Unit Release: 12/9/2010

  3. Objectives • Share My Perspective – Based on the DCU Response • What went well…. • ….and things that didn’t (Problems Encountered) • Discuss options for improvement

  4. #2 DD Incident: Sept 19, 2010 • 1.5 inch line rupture on #2 DD (Distillate Desulfurizer) • Light Vacuum Gas Oil (LVGO) release • Nature of material was lighter end, more mobile hydrocarbons • No measurable concentrations of H2S, SO2, or VOCs outside of plant • Root cause: Mechanical failure of high pressure piping

  5. No. 2DD Response Effort • Unified Command: HOVENSA, VI DPNR Enforcement, VI DOH • UC Approved All Response Plans • Government in Oversight Role • ATSDR Provided Technical Support • EPA OSC from Puerto Rico por Un Dia • Actions Taken: • Air Monitoring During Event (HOVENSA) • Visual Assessment • All Cisterns Sampled (TPH fingerprint) • Cleaning of Property/Cars/Impacted Cisterns • Drinking Water Distribution

  6. LP Flare Incident: Sept. 30, 2010 • Incident Summary • Slurry oil flowed into the low and high pressure flares • Black smoke and oil droplets dispersed downwind • Nature of Material: Heavier Hydrocarbon - did not wash off surfaces with rain water • Root cause: Human error; two in-line valves left partially open

  7. Profit Community Center Heaviest area found. 2mm or less LP Flare Incident - Impact Black Smoke Overhead (HP Flare) Intermittent Surge of Oil (LP Flare) Light Spotting on Surfaces – not uniform Heavier Hydrocarbon – Not Mobile No Impact to Cisterns Often difficult to find spots

  8. LP Flare Impact Areas

  9. LP Flare Response Effort • Unified Command Already Established for No. 2DD • HOVENSA, VI DPNR and VI DOH • Response Plans Approved by UC • Government in Oversight Role • ATSDR Provided Technical Support to VI DOH • EPA OSC from Puerto Rico Responded…………………… por Un DiaOtraVez • An OSC from Edison, NJ joined the response approx. 2 weeks after the LP Flare Incident (10/8/10)

  10. LP Flare Response Approach • Similar to No. 2 DD Response Effort • Air Monitoring During Release (HOVENSA) • Visual Assessment of Structures to determine impact • Representative Cistern Sampling (for Petroleum HC) • No Cisterns Impacted • Property Cleaning • Drinking Water Distribution

  11. Response Metrics No. 2 DD (Partial Data) LP Flare (Partial Data) • Cisterns sampled: 642 • Non-Detect: 491 • Positive Detection: 30 • Product Matches: 5 • Indeterminate HC: 12 • Non-Matching HC: 9 • Cisterns Cleaned: 30 • Water Distributed: 23,000 + • Completion Date: 11/2010 • Cisterns Sampled: 12 • Roofs Inspected: 58 • Homes Cleaned: 25 • Cars Cleaned: 600+ • Water Distr.: 3,000+ Source: HOVENSA Data

  12. EPA Sampling: LP Flare • 8 Samples Per DPNR Request • Residents that refused HOVENSA • 7 non-detects; 1 broken sample • EPA sampling confirmed HOVENSA results • Highlights the need for EPA presence/oversight • ERT/ATSDR provided assistance

  13. Delayed Coker Unit Release December 9, 2010

  14. Delayed Coker Incident Summary: December 9, 2010 • Incident Summary • 8 minute vapor release from D-8501 ejector line that began around 0721 • Vaporized Hydrocarbon , H2S and steam (Approx. 900o F) • Deposition of Coker Residues on rooftops/cars/other structures

  15. My Observations of Status Upon Arrival – 12/11/10 • Organized Response - Ramping Up Rapidly • Cistern Disconnections • Visual Assessments • Water Distribution Established • Sampling Plan Initiated • Car Vouchers Planned/Issued • HOVENSA: Cooperative and Working Hard on Corrective Actions • DPNR Enforcement/VIDOH Oversight • Public Distrust for All Parties

  16. DCU Response Effort • Unified Command • VI DPNR • VI DOH • EPA • HOVENSA • EPA OSC Presence Continuous Since 12/10/10 • USCG National Strike Force Support on-scene • EPA ERT Support (Statistics/Analytical Approach) • EPA Contractor Support • Lawrence Livermore National Lab • ATSDR Technical Support (remotely)

  17. DCU Response Metrics • Residences Contacted in /near Impact Zone: 344 • Cisterns Sampled: 39 • Statistical Sampling Approach • No Impact to Cisterns • Homes Inspected: 318 • Homes Cleaned: 231 • Water Distribution: 25,000 gallons • Car Wash Vouchers Issued: 219

  18. Lessons Learned • Analytical by ERT and LSU • ERT Fingerprint Method vs. LSU SOP • 50% Split Samples • Data Validation Issues Caused Extensive Delays in Project Closure • Chromatograms Ahead of Time • Lab Methods/Analytical Approach in writing • Planning Discussions with Labs • HOVENSA Residential Data Base

  19. Acute (Short-Term) Effects Description (ppm) Extent Area Population 10% of AEGL-1 >0.05 1.7km 0.2 km2 320 5% of AEGL-1 >0.03 5.0km 2.1 km2 3,150 2% of AEGL-1 >0.01 9.1km 7.7 km2 6,430 Areas and counts in the table are cumulative. Population Source = LandScan2005. Not For Public Dissemination H2S Release H2S using forced wind from 125deg - Actual Release Max 10-min Avg Air Conc. of HYDROGEN SULFIDE Effects or contamination from December 09, 2010 06:18 EST to December 09, 2010 10:18 EST at or near ground level. Release Location: 17.703889 N, 64.743056 W Material: HYDROGEN SULFIDE Generated On: December 21, 2010 15:12 EST Model: ADAPT/LODI Comments: Release of 85 lb at 800F with exit velocity of 10m/s over 8min from 250ft stack. Using forced wind direction from 125deg. Map Size: 10.9 km by 10.9 km Id: Production2.rcE42466.rcC1 NARAC Operations: ( Ron Baskett ); rbaskett@llnl.gov; 925-424-6465 Requested by: {Dwayne Harrington; US EPA Reg 2} Approved by: {IMAAC Operations; IMAAC} Not For Public Dissemination

  20. EPA Regional Administrator’s Visit • Public Meeting Complaints • Lack of Government Oversight • Insufficient Public Notification • When to Evacuate/When to Shelter In-Place

  21. Improving Local Response • Enhancing EPA/DPNR Partnership • Federal Representation on St. Croix • MOU Between USCG MSD…..Possibility ??? • Establish a Residential Data-Base for Emergencies/Evacs • Evacuation/Shelter In-Place Plans (LEPC) • Better Coordination of Local Assets/Capabilities • Periodic Joint Training/Exercises • VITEMA • DPNR • DOH • Fire Department • CST • USCG • EPA • HOVENSA

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