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Trichloroethylene (TCE) Update Waste Site Cleanup Advisory Committee Meeting January 24, 2013

Trichloroethylene (TCE) Update Waste Site Cleanup Advisory Committee Meeting January 24, 2013. Trichloroethylene (TCE) Update. Timeline on TCE 1989 EPA withdrew TCE values from IRIS 2001 EPA released draft TCE H ealth Assessment 2002 EPA SAB reviewed the draft Health Assessment

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Trichloroethylene (TCE) Update Waste Site Cleanup Advisory Committee Meeting January 24, 2013

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  1. Trichloroethylene (TCE) UpdateWaste Site Cleanup Advisory Committee MeetingJanuary 24, 2013

  2. Trichloroethylene (TCE) Update Timeline on TCE • 1989 EPA withdrew TCE values from IRIS • 2001 EPA released draft TCE Health Assessment • 2002 EPA SAB reviewed the draft Health Assessment • 2006 NAS released report and recommendations • 2009 EPA issued draft Health Assessment for TCE • 2011: USEPA released its Final Assessment for TCE on IRIS. http://www.epa.gov/iris/subst/0199.htm

  3. Basis for New Values

  4. Effects of Toxicity Value Changes on Method 1 and 3 (Residential; Risk Drivers – cancer or noncancer)

  5. MCP Imminent Hazard  The conditions at the disposal site pose an Imminent Hazard when: 1.”a Hazard Index equal to 1.0 for OHM that have the potential to cause serious effects (including but not limited to lethal, developmental, or neurological effects) following short-term exposures; and 2.  a Hazard Index equal to 10 for all other oil or hazardous materials.”

  6. Effect of Toxicity Value Change on Imminent Hazard

  7. Other Agencies

  8. Workplan for TCE by ORS • Review EPA, NAS and SAB documents • Meet with DEP/DPH Health Effects Advisory Committee • Focus on short term developmental effects: • Review the evidence for fetal developmental effects • Evaluate approaches for addressing short term exposures • BWSC and ORS will also discuss MCP risk management criteria (HQ limits)

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