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

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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

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Objectives Share My Perspective Based on the DCU Response What went well. .and things that didnt (Problems Encountered) Discuss options for improvement

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#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

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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

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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 Slide Courtesy of HOVENSA

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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 Profit Community Center Heaviest area found. 2mm or less Often difficult to find spots

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LP Flare Impact Areas

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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 Dia Otra Vez An OSC from Edison, NJ joined the response approx. 2 weeks after the LP Flare Incident (10/8/10)

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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

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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

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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

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December 9, 2010

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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. 900 o F) Deposition of Coker Residues on rooftops/cars/other structures

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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

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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)

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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

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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 Lessons Learned

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Not For Public Dissemination Max 10-min Avg Air Conc. of HYDROGEN SULFIDE H2S Release H2S using forced wind from 125deg - Actual Release 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} 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. 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. Not For Public Dissemination

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EPA Regional Administrators Visit Public Meeting Complaints Lack of Government Oversight Insufficient Public Notification When to Evacuate/When to Shelter In-Place

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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