Draft 01-16-14 4:15 PM For discussion purposes only. 

# DRAFT

Draft of SO 2 

# Regulation

.01 Definitions. A. In this chapter, the following terms have the mean ings indicated. B. Terms Defined. (1) "Affected electric generating unit" means any one of the following coal-fired electric generating units: (a) Brandon Shores Units 1 and 2; (b) C.P. Crane Units 1 and 2; (c) Chalk Point Units 1 and 2; (d) Dickerson Units 1, 2, and 3; (e) H.A. Wagner Units 2 and 3; (f) Morgantown Units 1 and 2; and (g) Warrior Run. (2) “By-pass stack operation” means any operation of an affected unit where a portion of the affected unit’s emissions pass through a duct, stack or conduit to the atmos phere that augments or subs titutes for the principal stack exhaust system during any portion of the unit’s operation. 

### (3) “1-hour emission rate” means an arithmetic av erage of all the valid data for emission rates recorded from a continuous monitoring system on a 1- hour basis.
.02 Applicability and General Requirements. A. Applicability. This chapter applies to th e following coal-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) Warrior Run. B. General Requirements. (1) An affected electric generating unit shall comply with the 1-hour SO 2 rate as provided in this regulation. (2) SO 2 Emission Limitations. The following rate limits apply when the affected electric generating unit is operating in non-bypass stack operation.



### Affected Electric Generating Unit 1-Hour SO 2 

### Rate lbs/hr

Brandon Shores Unit 1 1000
Brandon Shores Unit 2 1000
C.P. Crane Unit 1 1400
C.P. Crane Unit 2 1400
Chalk Point Units 1 and 2 2400 Dickerson Units 1, 2 and 3 1000 H.A. Wagner Unit 2 500 H.A. Wagner Unit 3 1000 Morgantown Unit 1 1500 Morgantown Unit 2 1500
Warrior Run Under development(3)30-Day Averaging. MDE is consid ering provisions that would estab lish 30-day averaging that will still guarantee attainment with the 1-hour SO 2 NAAQS. MDE understands there is re search going on in this area. Comments on this issue are encouraged. (4) By-Pass Stack Operation. The followi ng rate limits apply when the affected electric generating unit is operating in a by-pass stack operation mode.



### Affected Electric Generating Unit 1-Hour SO 2 

### Rate lbs/hr

Chalk Point Units 1 and 2 11,500 Dickerson Units 1, 2 and 3 8,900 Morgantown Units 1and 2 7,500 (5) Alternative Emission Limits. MDE is considering a provision in the re gulation that would establish limits in situations where there are multiple units on the same piece of property. Becaus e of issues like different stack heights and exit velociti es at different units, the alterna tive limits would have to be propos ed by the facilit y and approved by MDE and included as a revision to the SIP. The alternative limits would need to be based on modeling that shows that they will comply with the 1-hour SO 2 NAAQS. Comments on this issue are encouraged. 

### .03 Monitoring and Reporting Requirements. A. Compliance Demonstration. (1) Compliance with the emission rate limitations in this chapter shall be demonstrated with a continuous emission monitoring system that is installed, operated, and certified in accordance with 40 CFR Part 75; and (2) Data reported to demonstrate compliance with the em ission limits of regulation .03 of this chapter shall: (a) Not include data substituted using the missing da ta procedures in Subpart D of Part 75; and (b) Not be bias adjusted according to the procedure of Part 75. B. Quarterly Reports. (1) Beginning 30-days after the first quarter after the effective date of this regulation, each affected electric generating unit subject to the requirements of this chapte r shall submit a quarterly report to the Department detailing the status of compliance with this regulation. (2) Each subsequent quarterly report shall be submitted to the Department not later than 30-days following the end of the calendar quarter. (3) Each quarterly report shall specify any exceedances of the SO 2 emission rate limitations, the date, time and SO 2 emissions of each exceedance, the reason for the exceedance, and any corrective action taken.