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omb -- Agenda and Presentation Now Available Workshop on Risk Management Guidance for Stationary Sources of Air Toxics
Posted: 16 Jun 2015 08:34:40
Agenda and Presentation Now Available Workshop on Risk Management Guidance for Stationary Sources of Air Toxics. The agenda and staff presentation for the June 16, 2015 and June 18, 2015 public workshops on “Risk Management Guidance for Stationary Sources of Air Toxics” are now posted. This material is available at: http://www.arb.ca.gov/toxics/rma/rmaworkshops.htm Background On March 6, 2015, OEHHA released the Air Toxics Hot Spots Program Risk Assessment Guidelines: Guidance Manual for the Preparation of Health Risk Assessments. This document contains the new risk assessment methodology that addresses the latest scientific information on childhood sensitivities and the most recent data on childhood and adult exposure to air toxics. It represents an accumulation of data since the passage of the Children’s Health Protection Act of 1999 (SB 25, Stats. 1999) which required OEHHA to ensure infants and children are explicitly addressed in assessing risk. The use of the new risk assessment methodology may result in higher estimated cancer risk than what would have been calculated using the previous 2003 OEHHA risk assessment methodology for the same level of emissions and conditions. More information on the new OEHHA methodology can be found at: http://oehha.ca.gov/air/hot_spots/hotspots2015.html. In general, the higher estimated risks mean that new or modified sources of toxics may need additional emissions control. For existing sources, even though they meet existing rules and regulations, additional emissions control may be needed since the higher estimated risk might now exceed the District’s risk reduction levels for Hot Spots requirements. ARB and Districts are reevaluating their programs to determine if adjustments need to be made to permitting, source specific regulations, or Hot Spot programs. The “Risk Management Guidance for Stationary Sources of Air Toxics” is intended to help Districts with their reevaluation process and to communicate ARB and Districts’ plans, priorities, and policies regarding implementation of the new OEHHA risk assessment methodology. When approved, this document will supersede ARB’s Risk Management Guidelines for New and Modified Sources of Toxic Air Pollutants (1993). In addition, this document conveys ARB’s work plan for evaluating the Board’s Air Toxics Program and provides the updated Risk Management Policy for Inhalation Risk Assessments which replaces the ARB’s Interim Risk Management Policy for Inhalation based Residential Cancer Risk (2003). California is in a drought emergency. Visit www.SaveOurH2O.org for water conservation tips.