1. The Wonderful World of HAP Regulations
Genevieve Damico
U.S. EPA, Region 5

2. Agenda Alphabet soup What are the regulated HAPs
What are MACT standards
Status of MACT

3. Agenda Cont’d. What is case-by-case MACT What is the MACT Hammer
May 8, 2003 rule
Review

4. Alphabet Soup 112(a) - Definitions 112(b) - List of Pollutants
112(c) - List of Source Categories
112(d) - Emission Standards

5. Alphabet Soup 112(e) - Schedule for Standards and Review
112(f) - Standards to Protect Health and the Environment (Residual Risk Program)

6. Alphabet Soup 112(g) - Modifications, Construction, and Reconstruction
112(h) - Work Practice Standards

7. Alphabet Soup
112(i) - Schedule for Compliance for New Sources, Early Reduction Program
112(j) - Equivalent Emission Limitation by Permit "MACT Hammer"

8. Alphabet Soup 112(k) - Urban Air Toxics Strategy
112(l) - State Programs: Delegation of Implementation & Enforcement Authority

9. Alphabet Soup
112(m) - Atmospheric Deposition to Great Lakes/Coastal Waters-Reports to Congress
112(n) - Studies: Utilities, Coke Ovens, POTWs, Mercury, Hydrogen Sulfide

10. Alphabet Soup
112(o) - National Academy of Sciences Study on Risk Assessment
112(p) - Mickey Leland National Urban Air Toxics Research Center

11. Alphabet Soup 112(q)-Savings Provision
112(r)-Prevention of Accidental Releases
112(s)-Periodic Reports on Measures Taken to Implement Section 112

12. What are the regulated HAPs?
Listed in 112(b)
188 HAPs

13. What are the regulated HAPs? (Cont’d.)
Air toxics are those pollutants that are known or suspected of causing cancer or other serious health effects, such as developmental effects or birth defects

14. What is a MACT standard? Technology based standard
Source Category specific

15. What is a MACT standard? Cont’d.
No less stringent than the top 12% controlled sources in a particular source category (the MACT floor)

16. What is a MACT standard? Cont’d.
Most apply to major sources of HAPs (10 tpy of a particular HAP/25 tpy of an aggregate of HAPs)

17. http://www. epa. gov/ttn/atw/ eparules
eparules.html (See next page in your handouts for table.)

18. MACT
CFR Sub Parts
Final Federal Register
Compliance Date
Project Lead
Compliance Lead
Aerospace
Industry GG
9/01/95
(60FR45948)
9/01/98
Barbara Discoll
Len Lazarus

19. Status of MACT 89 promulgated 5 proposed
(This total includes the MON MACT as a single category.)

20. Future of MACT
U.S. EPA is going back to the promulgated MACT and evaluating whether or not further reductions are necessary based on a risk assessment

21. What is case-by-case MACT?
112(g) of the CAA
Construction or reconstruction of a major (10/25) process or production unit

22. What is case-by-case MACT? Cont’d.
Implemented through preconstruction permit programs in general

23. What is the MACT Hammer?
112(j) of the CAA requires major sources to submit a permit application proposing source-specific MACT if the EPA misses a scheduled promulgation date by 18 mos.

24. May 8, 2003 rule
Requires the application to be submitted 60 days after EPA misses a recently negotiated schedule

25. 112(j)
Conditions of the MACT determination must be incorporated into the Title V operating permit by the permitting authorities

26. Just a little review How many listed HAPs are there?
What is the MACT floor?
What is a major source of HAPs?
What types are subject to 112(g)?