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Responses to 40 CFR Part 75 Petitions - 2021

Posted below are EPA's responses (in chronological order) to submitted Part 75 petitions in 2021. Note that the actual, signed and dated response sent to the designated representative constitutes EPA’s official response and governs. When a response is posted below, EPA is not aware of any differences between the posted response and the actual, signed and dated response. EPA intends, and believes, that such differences -- if any -- will be minor and non substantive. For more information, or to see petition responses from other years, return to Part 75 Petition Responses

  • Sarpy County Station (pdf) (258.71 KB, April 15, 2021)
    Approval for a waiver of the 50-ton ozone-season NOx LME qualification limit for units 1 and 2.
  • Salem Harbor Station NGCC (pdf) (187.87 KB, April 15, 2021)
    Approval to use hourly gross calorific value (GCV) data in calculations of hourly heat input rate for units 1 and 2.
  • Deerhaven Renewable Energy Center (pdf) (183.29 KB, April 22, 2021)
    Approval of site-specific default moisture value for unit BFB1.
  • Great River Energy (pdf) (186.96 KB, September 16, 2021)
    Denial to use certain alternative Appendix D fuel flowmeter calibration procedures for unit 1 at Cambridge Station, (facility ID (ORISPL) 2038), unit 1 at Maple Lake Station, (facility ID (ORISPL) 2042), unit 1 at Rock Lake Station (facility ID (ORISPL) 6741) and units 1 and 2 at St. Bonifacius Station (facility ID (ORISPL) 6824)

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Last updated on March 4, 2025
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