### Title 26 DEPARTMENT OF THE ENVIRONMENT Subtitle 11 AIR QUALITY Chapter 27 Emission Limita tions for Power Plants 

## .02 Applicability and Exemptions. A. This chapter applies to the following fossil-fuel fired electric generating units: (1) Brandon Shores Units 1 and 2; (2) C.P. Crane Units 1 and 2; (3) Chalk Point Units 1 and 2; (4) Dickerson Units 1, 2, and 3; (5) H.A. Wagner Units 2 and 3; (6) Morgantown Units 1 and 2; and (7) R. Paul Smith Units 3 and 4. B. Except as provided in Regulation .03B(7) of this chapter, compliance with this chapter may not be achieved by applying sulfur dioxide (SO 2 ), oxides of nitrogen (NO x ), or mercury allowances acquired under any state or federal emissions trading program. C. The R. Paul Smith facility is subject to the NO x limitation in Regulation .03B(8) and the SO 2 limitation in Regulation .03C(3) of this chapter. 

## .03 General Requirements. A. An electric generating unit subject to this chapter shall comply with the emission limitations for NO x , SO 2 , and mercury as provided in this regulation.

B. NO x Emission Limitations. (1) Except as provided in §E of this regulation, annual NO xemissions from each affected electric generating unit may not exceed the number of tons in §B(2) of this regulation. (2) Annual Tonnage Limitations.

Annual NO x Tonnage Limitations Beginning Affected Unit January 1, 2009 January 1, 2012 Brandon Shores Unit 1 2,927 tons 2,414 tons Brandon Shores Unit 2 3,055 tons 2,519 tons



### 1C.P. Crane Unit 1 832 tons 686 tons C.P. Crane Unit 2 894 tons 737 tons Chalk Point Unit 1 1,415 tons 1,166 tons Chalk Point Unit 2 1,484 tons 1,223 tons Dickerson Unit 1 672 tons 554 tons Dickerson Unit 2 736 tons 607 tons Dickerson Unit 3 698 tons 575 tons H.A. Wagner Unit 2 673 tons 555 tons H.A. Wagner Unit 3 1,352 tons 1,115 tons Morgantown Unit 1 2,540 tons 2,094 tons Morgantown Unit 2 2,522 tons 2,079 tons Total 19,800 tons 16,324 tons (3) Except as provided in §E of this regulation, ozone season NO x emissions from each affected electric generating unit may not exceed the number of tons in §B(4) of this regulation. (4) Ozone Season Tonnage Limitations.

Affected Unit Ozone Season NO xTonnage Limitations Beginning May 1, 2009 Brandon Shores Unit 1 1,363 tons Brandon Shores Unit 2 1,449 tons C.P. Crane Unit 1 345 tons C.P. Crane Unit 2 385 tons Chalk Point Unit 1 611 tons Chalk Point Unit 2 657 tons Dickerson Unit 1 311 tons Dickerson Unit 2 333 tons Dickerson Unit 3 314 tons H.A. Wagner Unit 2 278 tons H.A. Wagner Unit 3 583 tons Morgantown Unit 1 1,053 tons Morgantown Unit 2 1,048 tons Total 8,730 tons (5) Except as provided in §§B(7) and E of this regulation, if after reviewing 2009 ozone season measured ozone levels at air monitoring stations lo cated in Maryland, the Department determines that ozone levels in Maryland exceed the levels required to meet the National Ambient Air Quality Standard for



### 2ozone, commencing on May 1, 2012, ozone season NO x emissions from each affected electric generating unit may not exceed the number of tons in §B(6) of this regulation. (6) Ozone Season Tonnage Limitations.

Affected Unit Ozone Season NO xTonnage Limitations Beginning May 1, 2012 Brandon Shores Unit 1 1,124 tons Brandon Shores Unit 2 1,195 tons C.P. Crane Unit 1 284 tons C.P. Crane Unit 2 317 tons Chalk Point Unit 1 503 tons Chalk Point Unit 2 542 tons Dickerson Unit 1 257 tons Dickerson Unit 2 274 tons Dickerson Unit 3 259 tons H.A. Wagner Unit 2 229 tons H.A. Wagner Unit 3 481 tons Morgantown Unit 1 868 tons Morgantown Unit 2 864 tons Total 7,197 tons (7) Electric System Reliabil ity During Ozone Seasons. (a) An exceedance of the NO xlimitations in §B(4) or (6) of this regulation which occurs because PJM Interconnection, LLC or a successor in dependent system operator , acts to invoke "Maximum Emergency Generation", "Load Reduction", "Voltage Re duction", "Curtailment of Non-essential Building Load", or "Manual Load Dump" procedures in accordance with the current PJM Manual, or a PJM alert preceding such action as to a generating unit that has temporarily shut down in order to avoid potential interruption in electric service and maintain electric system reliability is not a violation of this chapter provided that: (i) Within 36 hours following the action, the owner or operator of the affected electric generating unit or units notifies the Manager of the Air Quality Compliance Program of the action taken by PJM Interconnection and provides the Department with documentation of the action which is satisfactory to the Department; (ii) Within 48 hours after completion of the action, the owner or operator of the affected unit or units provides the Department with the estimated NO xemissions in excess of the emission limitation; and (iii) Not later than December 31 of the year in which the emission limitation is exceeded, the owner or operator of the affected generating unit or units transfers to the Maryland Environmental Surrender Account, ozone season NO xallowances equivalent in number to the tons of NO x emitted in excess of the emission limitation in §B(4) or (6), as applicable.



### 3(b) The owner or operator of an electric generating unit or system, as applicable, shall send written notice to the Manager of the Air Quality Compliance Program not later than 5 business days following the day when the cumulative ozone season NO xemissions of an electric generating unit or system, as applicable, are: (i) Equal to approximately 80 percent of the applicable ozone season emission limitation; and (ii) Equal to the applicable ozone season emission limitation. (8) Emissions from the R. Paul Smith facility may not exceed: (a) An annual tonnage limitation of 1,390 tons of NO x beginning with the period January 1, 2009 through December 31, 2009; and (b) An ozone season tonnage limitation of 545 tons of NO xbeginning with the ozone season May 1, 2009 through September 30, 2009.

C. SO 2Emission Limitations. (1) Except as provided in §E of this regulation, annual SO 2emissions from each affected electric generating unit may not exceed the number of tons in §C(2) of this regulation. (2) Annual Tonnage Limitations.

Annual SO 2 Tonnage Limitations Beginning Affected Unit January 1, 2010 January 1, 2013 Brandon Shores Unit 1 7,041 tons 5,392 tons Brandon Shores Unit 2 7,347 tons 5,627 tons C.P. Crane Unit 1 2,000 tons 1,532 tons C.P. Crane Unit 2 2,149 tons 1,646 tons Chalk Point Unit 1 3,403 tons 2,606 tons Chalk Point Unit 2 3,568 tons 2,733 tons Dickerson Unit 1 1,616 tons 1,238 tons Dickerson Unit 2 1,770 tons 1,355 tons Dickerson Unit 3 1,678 tons 1,285 tons H.A. Wagner Unit 2 1,618 tons 1,239 tons H.A. Wagner Unit 3 3,252 tons 2,490 tons Morgantown Unit 1 6,108 tons 4,678 tons Morgantown Unit 2 6,066 tons 4,646 tons Total 47,616 tons 36,467 tons (3) Emissions from the R. Paul Smith facility may not exceed an annual tonnage limitation of 4,590 tons of SO 2 beginning with the period January 1, 2010 through December 31, 2010.



### 4D. Mercury Emission Limitations. (1) For the 12-month period from January 1, 20 10 through December 31, 2010 and ending with the 12-month period beginning Decembe r 1, 2012 through November 30, 2013, each affected facility shall meet a 12-month rolling average removal efficiency for mercury of at least 80 percent. (2) For the 12 months beginning January 1, 2013 an d thereafter, each affect ed facility shall meet a 12-month rolling average removal efficiency for mercury of at least 90 percent. (3) The mercury removal efficiency required in §D(1) and (2) of this regulation shall be determined in accordance with Regul ation .04 of this chapter. (4) The R. P. Smith facility shall meet the mercury requirements in §D(1)—(3) of this regulation. E. System-Wide Compliance Determinations. (1) Compliance with the emission limitations in §§B and C of this regulation may be achieved by demonstrating that the total number of tons emitted from all electric generating units in a system does not exceed the sum of the tonnage limitations for all electric generating units in that system. (2) A system-wide compliance determination shall be based only upon emissions from units in Maryland that are subject to the emission limitations in §§B and C of this regulation. (3) If a unit that is part of a system is transfer red to a different person that does not own, operate, lease, or control an affected unit s ubject to this chapter, the transferred unit shall meet the limitations in §§B and C of this regulation applicable to that electric generating unit.



### 5