CT SB00564

Requires power plants that combust coal in amounts greater than 10% of total heat input (affected units) to meet a mercury emissions limit of 0.6 pounds per trillion BTU or achieve a 90% reduction from measured inlet conditions, whichever is more readily achievable, effective July 1, 2008.

Allows owners or operators whose properly installed control technology fails to meet the emissions requirement to notify the Commissioner by February 1, 2009 and request establishment of an alternative emissions limit based on optimized performance of their equipment.

Mandates quarterly stack testing using EPA Method 29 to demonstrate compliance, measured as the average of the two most recent calendar quarters, or allows use of continuous emission monitors if commercially available and compliant with National Institute of Technology Standards.

Permits operators who maintain compliance for eight consecutive calendar quarters to reduce testing frequency from quarterly to annually, with requirement to resume quarterly testing if annual tests show non-compliance.

Requires the Commissioner to review mercury emission limits for all affected units by July 1, 2012, and may adopt more stringent regulations thereafter.