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Rhode Island School of Design (RISD) Mercury Release Response 14-19 May 2006

Rhode Island School of Design (RISD) Mercury Release Response 14-19 May 2006. RISD Mercury Release May 2006 Release Location Map. RISD Mercury Release May 2006. RISD Mercury Release May 2006 Building Layout. Fletcher: Student Studios. Mason: Offices, Class- Rooms, Work-spaces.

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Rhode Island School of Design (RISD) Mercury Release Response 14-19 May 2006

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  1. Rhode Island School of Design (RISD)Mercury Release Response14-19 May 2006

  2. RISD Mercury Release May 2006Release Location Map

  3. RISD Mercury Release May 2006

  4. RISD Mercury Release May 2006Building Layout Fletcher: Student Studios Mason: Offices, Class- Rooms, Work-spaces

  5. RISD Mercury Release May 2006Release Location • Release on Fletcher 2nd floor landing • Fletcher & Mason are joined, common HVAC • Mercury tracked throughout • Approx .25-.5 lb – “golf ball” size

  6. RISD Mercury Release May 2006Cleaning Operations

  7. RISD Mercury Release May 2006Cleared Art Pieces

  8. RISD Mercury Release May 2006External HVAC

  9. RISD Mercury Release May 2006Mercury Response Issues • Hg contamination spread • Need for sufficient instrument assets ASAP • Need for external high capacity HVAC • Public information • What is re-occupancy level & who sets (DOH) • Hopcalite test radius of influence and need vs rigorous monitoring w/ multiple Lumex’s • Unified command with State & Local agencies and Public Health Officials key

  10. RISD Mercury Release May 2006Hg Concentrations of Interest-all in ng/m3 • IDLH 10,000,000 • OSHA PEL 100,000 • NIOSH REL 50,000 • ACGIH TLV 25,000 • ATSDR proposed action level 10,000 • ATSDR proposed re-occupancy level 1,000 • USEPA RfC (chronic) 300 • ATSDR minimal risk level (chronic) 200 Jerome range: 3000-999,000 Lumex range: 2-2000

  11. RISD Mercury Release May 2006Postscript

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