1. California Environmental Protection Agency Air Resources Board Overview of theAB2588 Air Toxics “Hot Spots” Program

2. Background of AB 2588 “Hot Spots” Program • State Law enacted in 1987 (Connelly) • Facilities that emit >25 tons/yr of criteria pollutants must report emissions in 1989 • Facilities that emit >10 tons/yr report in 1990 • Facilities that emit <10 tons/yr report in 1991 • Approximately 5,000 facilities Statewide have been evaluated under AB 2588 • Currently only 25 facilities are high risk

3. Purpose of “Hot Spots” Program • Complements existing toxic air contaminant identification and control program • Provides data to estimate exposures and develop controls • Has resulted in voluntary reductions in toxic emissions and risk

4. “Hot Spots” Applicability • Facilities that emit >10 tons per year of Total Organic Gasses (TOG), Particulate Matter (PM), Nitrogen Oxides (NOx), or Sulfur Oxides (SOx) • Facilities that emit >5 tons/yr of any Federal Hazardous Air Pollutant (HAP) • Facilities that emit <10 tons/yr like gas stations, dry cleaners, hazardous waste incinerators, metal platers using cadmium or chromium, waste water treatment facilities, etc.

5. “Hot Spots” Process • OEHHA adopts health values based on scientific reports and exposure data • ARB identifies facilities that must report, which emissions must be reported, and how they are reported to the local air district • Local air districts implement the program (review inventory and risk assessments)

6. Facility Requirements • Facilities report air toxics emissions from routine operations • High priority facilities prepare health risk assessments • Facilities notify public of significant risks • Significant-risk facilities reduce risks below significance levels

7. Facility Reporting and Update Requirements • Requires facilities to update their emission inventories every four years • Allows streamlined updates if “no significant change”

8. AB 2588 Fee Regulation • Exempts low risk facilities from fees • Sets fee rates for risk/priority categories • Fees partially support ARB and OEHHA “Hot Spots” Programs • Average annual fee is ~$100 per facility • State fees in the range of $35 to $3,636

9. Status of Crystalline Silica • Scientific Review Panel endorsed a chronic Reference Exposure Level (cREL) in 2004 based on available health studies • Office of Environmental Health Hazard Assessment (OEHHA) adopts cREL in February 2005. • ARB includes cREL in regulation update in 2005 • Measurement methods and emission factors under development

10. For More Information • On the Web: http://www.arb.ca.gov/ab2588/ab2588.htm • Health & Safety Code section 44300 et seq. • California Code of Regulations, sections 93300-93300.5 • Emission Inventory Criteria and Guidelines Report