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omb -- Workshops Risk Management Guidance for Stationary Sources of Air Toxics
Posted: 27 May 2015 12:00:12
Workshops Risk Management Guidance for Stationary Sources of Air Toxics. The California Air Resources Board (ARB/Board) and the California Air Pollution Control Officer’s Association (CAPCOA) invite you to participate in two public workshops to discuss the “Risk Management Guidance for Stationary Sources of Air Toxics.” This draft document is a discussion draft of guidance that California’s 35 local Air Pollution Control Districts and Air Quality Management Districts (Districts) may elect to use for incorporating the Office of Environmental Health Hazard Assessment’s (OEHHA) new health risk assessment methodology into their stationary source permitting and Assembly Bill (AB) 2588 (Stats. 1987) Air Toxics Hot Spots programs. This document will be available for public comment beginning on May 27, 2015, and will be posted at http://www.arb.ca.gov/toxics/rma/rmaguideline.htm. Following the workshops, we will release a revised draft for consideration by the Air Resources Board at a public hearing on July 23, 2015. The workshops will be held at the following times and locations: Date: Tuesday, June 16, 2015 (webcast) Time: 9:00 a.m. – 11:30 a.m. (PST) Location: South Coast Air Quality Management District Auditorium 21865 Copley Drive Diamond Bar, California 91765-4182 Date: Thursday, June 18, 2015 (webcast) Time: 9:00 a.m. – 11:30 a.m. (PST) Location: CalEPA Headquarters Building Byron Sher Auditorium 1001 I Street, 2nd Floor Sacramento, California 95814 More information on these workshops and a copy of the workshop notice is available at: http://www.arb.ca.gov/toxics/rma/rmaworkshops.htm. If you have questions regarding the upcoming workshops, please contact Mr. Gregory Harris, Staff Air Pollution Specialist, at (916) 327 5980 or via email at gregory.harris@arb.ca.gov 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.