Mercury Rule (3/29/05)
On March 15, 2005, EPA issued the Clean
Air Mercury Rule (CAMR) designed to reduce mercury
emissions from coal-fired utility boilers. The Rule
creates a cap-and-trade program that will be implemented
in two phases. Phase 1 caps mercury emissions at 38 tons
per year (tpy) in 2010 and phase 2 caps mercury emissions
at 15 tpy in 2018. 40 CFR Part 75 serves as the
foundation of the CAMR monitoring, recordkeeping and
reporting requirements. For existing units that commence
commercial operation before July 1, 2008, mercury
monitoring systems must be installed and certified no
later than January 1, 2009.
CAMR highlights include, but are not limited to:
- Creates Subpart HHHH of 40 CFR Part 60 which
establishes the model rule provisions for the
mercury budget trading program for coal-fired
- Incorporates Performance Specification 12A for
mercury CEMS in Appendix B of 40 CFR Part 60.
- Revises 40 CFR Part 75 to incorporate mercury
monitoring, recordkeeing and reporting
requirements where applicable. This includes
missing data substitution procedures, QA/QC
requirements, quarterly reporting, etc.
- Creates Subpart I of 40 CFR Part 75 which
establishes the mercury mass emission provisions.
- Introduces Appendix K of 40 CFR Part 75 which
establishes the procedures for operating a
sorbent trap monitoring system to determine
mercury mass emissions.
- Revises Subpart Da of 40 CFR Part 60 by
establishing stringent mercury emissions limits
in addition to the trading program
"caps" for new units (i.e., unit
construction on or before January 30, 2004).
Emission limits are set according to fuel type
(e.g., 21 x 10-6 lb mercury/megawatt
hour for bituminous coal-fired units) and
compliance is determined on a 12-month rolling
A copy of CAMR is located in our FTP Library. For more
information concerning RMBs mercury related
consulting services, please contact Ralph Roberson at
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Last Revised: March 31, 2005