§ 52.1628 Interstate pollutant transport and regional haze provisions; what are the FIP requirements for San Juan Generating Station emissions affecting visibility?  


Latest version.
  • Link to an amendment published at 79 FR 60985, October 9, 2014.

    (a) Applicability. The provisions of this section shall apply to each owner or operator of the coal burning equipment designated as Units 1, 2, 3, or 4 at the San Juan Generating Station in San Juan County, New Mexico (the plant).

    (b) Compliance Dates. (1) Compliance with the requirements of this section is required by:

    (i) SO2: No later than 5 years after September 21, 2011.

    (ii) NOX: No later than 5 years after September 21, 2011.

    (iii) H2SO4: No later than 5 years after September 21, 2011.

    (2) On and after the compliance date of this rule, no owner or operator shall discharge or cause the discharge of NOX, SO2, or H2SO4 into the atmosphere from Units 1, 2, 3 and 4 in excess of the limits for these pollutants.

    (c) Definitions. All terms used in this part but not defined herein shall have the meaning given them in the CAA and in parts 51 and 60 of this chapter. For the purposes of this section:

    24-hour period means the period of time between 12:01 a.m. and 12 midnight.

    Air pollution control equipment includes baghouses, particulate or gaseous scrubbers, and any other apparatus utilized to control emissions of regulated air contaminants which would be emitted to the atmosphere.

    Boiler-operating-day means any 24-hour period between 12:00 midnight and the following midnight during which any fuel is combusted at any time at the steam generating unit.

    Heat input means heat derived from combustion of fuel in a unit and does not include the heat input from preheated combustion air, recirculated flue gases, or exhaust gases from other sources. Heat input shall be calculated in accordance with part 75 of this chapter, using data from certified O2 and stack gas flow rate monitors.

    Owner or Operator means any person who owns, leases, operates, controls, or supervises the plant or any of the coal burning equipment designated as Units 1, 2, 3, or 4 at the plant.

    Oxides of nitrogen (NOX) means all oxides of nitrogen except nitrous oxide, as measured by test methods set forth in 40 CFR part 60.

    Regional Administrator means the Regional Administrator of EPA Region 6 or his/her authorized representative.

    (d) Emissions Limitations and Control Measures. (1) Within 180 days of September 21, 2011, the owner or operator shall submit a plan to the Regional Administrator that identifies the air pollution control equipment and schedule for complying with paragraph (d) of this section. The NOX control device included in this plan shall be designed to meet the NOX emission rate limit identified in paragraph (d) of this section with an ammonia slip of no greater than 2.0 ppm. The owner or operator shall submit amendments to the plan to the Regional Administrator as changes occur.

    (2) NOX emission rate limit. The NOX emission rate limit for each unit in the plant, expressed as nitrogen dioxide (NO2), shall be 0.05 pounds per million British thermal units (lbs/MMBtu), as averaged over a rolling 30 boiler-operating-day period. The hourly NOX and O2 data used to determine the NOX emission rates shall be in compliance with the requirements in part 75 of this chapter. For each unit on each boiler-operating-day, the hourly NOX emissions measured in lbs/MMBtu, shall be averaged over the hours the unit was in operation to obtain a daily boiler-operating-day average. Each day, the 30-day-rolling average NOX emission rate for each unit (in lbs/MMBtu) shall be determined by averaging the daily boiler-operating-day average emission rate from that day and those from the preceding 29 days.

    (3) SO2 emission rate limit. The SO2 emission rate limit for each unit in the plant shall be 0.15 pounds per million British thermal units (lbs/MMBtu), as averaged over a rolling 30 boiler-operating-day period. The hourly NOX and O2 data used to determine the NOX emission rates shall be in compliance with the requirements in part 75 of this chapter. For each unit on each boiler-operating-day, the hourly SO2 emissions measured in lbs/MMBtu, shall be averaged over the hours the unit was in operation to obtain a daily boiler-operating-day average. Each day, the 30-day-rolling average SO2 emission rate for each unit (in lbs/MMBtu) shall be determined by averaging the daily boiler-operating-day average emission rate from that day and those from the preceding 29 days.

    (4) Sulfuric Acid (H2SO4) emission rate limit: Emissions of H2SO4 from each unit shall be limited to 2.6 × 104 lb/MMBtu on an hourly basis.

    (e) Testing and monitoring. Notwithstanding any language to the contrary, the paragraphs in this section apply at all times to Units 1, 2, 3, and 4 at the plant.

    (1) By the applicable compliance date in paragraph (b) of this section, the owner or operator shall install, calibrate, maintain and operate Continuous Emissions Monitoring Systems (CEMS) for NOX, SO2, stack gas flow rate, and O2 on Units 1, 2, 3, and 4 in accordance with part 75 of this chapter. The owner or operator shall also comply with the applicable quality assurance procedures in part 75 of this chapter for these CEMS. Continuous monitoring systems for NOX, SO2, stack gas flow rate, and O2 that have been certified for use under the Acid Rain Program, and that are continuing to meet the on-going quality-assurance requirements of that program, satisfy the requirements of this paragraph (e)(1). Compliance with the emission limits for NOX and SO2 shall be determined by using data from these CEMS.

    (2) The CEMS required by this rule shall be in continuous operation during all periods of operation of the coal burning equipment, including periods of startup, shutdown, and malfunction, except for CEMS breakdowns, repairs, calibration checks, and zero and span adjustments. Continuous monitoring systems for measuring SO2, NOX, and O2 shall complete a minimum of one cycle of operation (sampling, analyzing, and data recording) for each successive 15-minute period. Hourly averages shall be computed using at least one data point in each fifteen minute quadrant of an hour. Notwithstanding this requirement, an hourly average may be computed from at least two data points separated by a minimum of 15 minutes (where the unit operates for more than one quadrant in an hour) if data are unavailable as a result of performance of calibration, quality assurance, preventive maintenance activities, or backups of data from data acquisition and handling system, and recertification events. Each required CEMS must obtain valid data for at least 90.0 percent of the unit operating hours, on an annual basis.

    (3) Emissions of H2SO4 shall be measured within 180 days of start up of the NOX control device and annually thereafter using EPA Test Method 8A (CTM-013).

    Note to paragraph (e)(3): EPA Test Method 8A is available at: http://www.epa.gov/ttn/emc/ctm/ctm-013.pdf.

    (f) Reporting and Recordkeeping Requirements. Unless otherwise stated all requests, reports, submittals, notifications, and other communications to the Regional Administrator required by this section shall be submitted, unless instructed otherwise, to the Director, Multimedia Planning and Permitting Division, U.S. Environmental Protection Agency, Region 6, to the attention of Mail Code: 6PD, at 1445 Ross Avenue, Suite 1200, Dallas, Texas 75202-2733.

    (1) The owner or operator shall keep records of all CEMS data, stack test data, and CEMS quality-assurance tests required under this section for a period of at least 3 years.

    (2) For each unit subject to the emission limitations for SO2, and NOX, in this section, the owner or operator shall comply with the excess emission reporting requirements in §§60.7(c) and (d) of this chapter, on a semiannual basis, unless more frequent (e.g., quarterly) reporting is requested by the Regional Administrator. For SO2 and NOX. any day on which the 30-day rolling average emission limit in paragraph (d) of this section is not met shall be counted as an excess emissions day. The duration of the excess emissions period shall be the number of unit operating hours on that day. Any hour in which a CEMS is out-of-service (excluding hours in which required calibrations and QA tests are performed) shall be counted as an hour of monitor downtime.

    (g) Equipment Operations. At all times, including periods of startup, shutdown, and malfunction, the owner or operator shall, to the extent practicable, maintain and operate the unit including associated air pollution control equipment in a manner consistent with good air pollution control practices for minimizing emissions. Determination of whether acceptable operating and maintenance procedures are being used will be based on information available to the Regional Administrator which may include, but is not limited to, monitoring results, review of operating and maintenance procedures, and inspection of the unit.

    (h) Enforcement. (1) Notwithstanding any other provision in this implementation plan, any credible evidence or information relevant as to whether the unit would have been in compliance with applicable requirements if the appropriate performance or compliance test had been performed, can be used to establish whether or not the owner or operator has violated or is in violation of any standard or applicable emission limit in the plan.

    (2) Emissions in excess of the level of the applicable emission limit or requirement that occur due to a malfunction shall constitute a violation of the applicable emission limit.

    [76 FR 52439, Aug. 22, 2011]