EPA approves NOx emissions level for Lakeland’s McIntosh Unit 1

The U.S. Environmental Protection Agency is finalizing its approval of Florida’s March 10 State Implementation Plan (SIP) revision, submitted by the Florida Department of Environmental Protection (FDEP) in relation to a gas-fired unit at the McIntosh power plant.

That submittal fulfills Florida’s commitment to EPA to provide a regional haze SIP revision with a Best Available Retrofit Technology (BART) nitrogen oxides (NOx) emissions limit for Unit 1 at Lakeland Electric‘s C.D. McIntosh Power Plant reflecting best operating practices for good combustion, EPA said in a notice to be published in the Oct. 23 Federal Register. This rule is effective 30 days after date of publication in the Federal Register.

In December 2012, EPA proposed to approve the BART and reasonable progress determinations for a number of electricity generating units (EGUs) in Florida as part of Florida’s regional haze SIP. EPA proposed approval of Florida’s BART determination for emissions Units 1 and 2 at McIntosh found subject to BART. In August 2013, EPA issued a final, full approval of Florida’s regional haze SIP. In that final action, EPA approved the BART determination for the McIntosh facility, including the determination that the existing level of control for NOx at Unit 1, which is best operating practices for good combustion, is the NOx BART control for Unit 1.

FDEP submitted a letter to EPA in 2013 in which the state committed to provide EPA with a regional haze SIP revision no later than March 19, 2015, the deadline for the state’s five-year regional haze periodic progress report SIP, that would include a NOx BART emissions limit for Unit 1 reflecting best operating practices for good combustion. FDEP also committed to modify the title V permit for McIntosh to include this new limit.

Florida submitted a SIP revision dated March 10, revising the state’s regional haze SIP to include a NOx BART emissions limit for McIntosh Unit 1 and a construction permit dated April 30, 2014, for Unit 1 containing this limit. The permit contains supporting conditions (e.g., monitoring requirements) and a condition specifying a schedule for McIntosh to apply for a revision to its title V permit to reflect the new permit conditions.

In a notice of proposed rulemaking published on Aug. 20, EPA proposed to approve Florida’s March 10 regional haze SIP revision. Comments on the proposed rulemaking were due on or before Sept. 21. No adverse comments were received.

In other recent news for this plant:

  • The FDEP on Sept. 3 granted a request from Lakeland Electricfor an extension of a permit deadline so it can complete scrubber upgrades on its coal-fired McIntosh Unit 3. Not all upgrades were able to be completed during the March 2015 outage for the unit. Therefore Lakeland Electric requested a one-year extension to allow for the remaining components of the project to be completed during the planned spring 2016 outage. The permit expiration date was extended from Dec. 31, 2015, to Dec. 31, 2016.
  • The FDEP on May 18 approved an application from Lakeland Electric for an air permitting exemption related to an emissions project. On April 24, Lakeland Electric submitted a request to use dibasic acid (DBA) or other organic acids in the wet flue gas desulfurization (FGD) system for Unit 3 at McIntosh. Unit 3 is a dry-bottom, wall-fired steam generator with a nominal design capacity of 364 MW that fires coal, residual oil, natural gas and petroleum coke.

McIntosh consists of three fossil fuel fired steam generators, three diesel powered engines, and two gas turbines. Unit 1 is fired with natural gas, No. 6 fuel oil or on-specification used oil. Unit 2 is fired with natural gas, propane, No. 2 fuel oil or No. 6 fuel oil. Unit 3, which is getting the FGD upgrades, is fired with coal, fuel oil and natural gas. Gas Turbine Peaking Unit 1 is primarily fired with natural gas or No. 2 fuel oil. McIntosh Unit 5, a 370-MW combined cycle stationary combustion turbine, is fired with natural gas, or No. 2 or superior grade fuel oil. 

About Barry Cassell 20414 Articles
Barry Cassell is Chief Analyst for GenerationHub covering coal and emission controls issues, projects and policy. He has covered the coal and power generation industry for more than 24 years, beginning in November 2011 at GenerationHub and prior to that as editor of SNL Energy’s Coal Report. He was formerly with Coal Outlook for 15 years as the publication’s editor and contributing writer, and prior to that he was editor of Coal & Synfuels Technology and associate editor of The Energy Report. He has a bachelor’s degree from Central Michigan University.