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 Code of Federal Regulations (Last Updated: November 8, 2024)
 Title 40 - Protection of Environment
 Chapter I—Environmental Protection Agency
 SubChapter C—Air Programs
 Part 63 - National Emission Standards for Hazardous Air Pollutants for Source Categories
 Subpart O - Ethylene Oxide Emissions Standards for Sterilization Facilities

  Table 1 to Subpart O of Part 63 - —Standards for SCVs  

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  • Table 1 to Subpart O of Part 63—Standards for SCVs

    As required in § 63.362(c), for each SCV, you must meet the applicable standard in the following table:

    For each . . . For which . . . You must . . . You must comply with the standard . . .
    1. Existing SCV a. Facility EtO use is at least 10 tpy i. Continuously reduce EtO emissions by 99 percent1 Until April 6, 2026.
    b. Facility EtO use is at least 1 tpy but less than 10 tpy i. Continuously reduce EtO emissions by 99 percent1 Until April 6, 2026.
    ii. Continuously reduce EtO emissions by 99.8 percent 2 3 No later than April 6, 2026.
    c. Facility EtO use is at least 30 tpy i. Continuously reduce EtO emissions by 99.99 percent 2 3 No later than April 6, 2026.
    d. Facility EtO use is at least 10 tpy but less than 30 tpy i. Continuously reduce EtO emissions by 99.9 percent 2 3 No later than April 6, 2026.
    e. Facility EtO use is less than 1 tpy i. Continuously reduce EtO emissions by 99 percent 2 4 No later than April 5, 2027.
    2. New SCV a. Initial startup is on or before April 5, 2024, and facility EtO use is at least 30 tpy i. Continuously reduce EtO emissions by 99.99 percent 2 5 No later than April 5, 2024.
    b. Initial startup is on or before April 5, 2024, and facility EtO use is at least 10 tpy but less than 30 tpy i. Continuously reduce EtO emissions by 99.9 percent 2 5 No later than April 5, 2024.
    c. Initial startup is on or before April 5, 2024, and facility EtO use is at least 1 tpy but less than 10 tpy i. Continuously reduce EtO emissions by 99.8 percent 2 5 No later than April 5, 2024.
    d. Initial startup is on or before April 5, 2024, and facility EtO use is less than 1 tpy i. Continuously reduce EtO emissions by 99 percent 2 6 No later than April 5, 2024.
    e. Initial startup is after April 5, 2024, and facility EtO use is at least 30 tpy i. Continuously reduce EtO emissions by 99.99 percent 2 5 Upon startup of the source.
    f. Initial startup is after April 5, 2024, and facility EtO use is at least 10 tpy but less than 30 tpy i. Continuously reduce EtO emissions by 99.9 percent 2 5 Upon startup of the source.
    g. Initial startup is after April 5, 2024, and facility EtO use is at least 1 tpy but less than 10 tpy i. Continuously reduce EtO emissions by 99.8 percent 2 5 Upon startup of the source.
    h. Initial startup is after April 5, 2024, and facility EtO use is less than 1 tpy i. Continuously reduce EtO emissions by 99 percent 2 6 Upon startup of the source.

    1 The standard applies if the facility has met or exceeded the specified EtO use within any consecutive 12-month period after December 6, 1996.

    2 If using EtO CEMS to determine compliance, this standard is based on the previous 30 operating days of data.

    3 The standard applies if the facility has met or exceeded the specified EtO use within any consecutive 12-month period after April 7, 2025.

    4 The standard applies if the facility has used less than 1 tpy of EtO within all consecutive 12-month periods after April 6, 2026.

    5 The standard applies if the facility is expected to meet or exceed the specified EtO use within one year after startup. Afterwards, the standard applies if the facility has met or exceeded the specified EtO use within any consecutive 12-month period after startup.

    6 The standard applies if the facility is not expected to meet or exceed 1 tpy of EtO use within one year after startup. Afterwards, the standard applies if the facility has used less than 1 tpy of EtO within all consecutive 12-month periods after startup.