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42 U.S.C. 7401 et seq.
57 FR 61992, Dec. 29, 1992, unless otherwise noted.
67 FR 45598, July 9, 2002, unless otherwise noted.
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Subscribe to: 40 CFR Part 63 Subpart XXXX - Continuous Compliance Requirements for Tire Production Affected Sources
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At 91 FR 37274, June 22, 2026, as required by the Congressional Review Act and Public Law 119-14, the Environmental Protection Agency removed all amendments to subpart XXXX of part 63 published at 89 FR 94886, Nov. 29, 2024.
(a) You must monitor and collect data as specified in table 9 to this subpart.
(b) Except for periods of monitoring malfunctions, associated repairs, and required quality assurance or control activities (including, as applicable, calibration checks and required zero and span adjustments), you must monitor continuously (or collect data at all required intervals) while the affected source is operating. This includes periods of startup, shutdown, and malfunction when the affected source is operating.
(c) In data average calculations and calculations used to report emission or operating levels, you may not use data recorded during periods of monitoring malfunctions or associated repairs, or recorded during required quality assurance or control activities. Such data may not be used in fulfilling any applicable minimum data availability requirement. You must use all the data collected during all other periods in assessing the operation of the control device and associated control system.
(a) You must demonstrate continuous compliance with each applicable limit in table 1 to this subpart using the methods specified in table 10 to this subpart.
(b) You must report each instance in which you did not meet an emission limit in table 1 to this subpart. You must also report each instance in which you did not meet the applicable requirements in table 10 to this subpart. These instances are deviations from the emission limits in this subpart. The deviations must be reported in accordance with the requirements in § 63.6010(e).
(c) You also must meet the following requirements if you are complying with the purchase alternative for tire production sources described in § 63.5985(a):
(1) If, after you submit the Notification of Compliance Status, you use a cement or solvent for which you have not previously verified percent HAP mass using the methods in § 63.5994(a), you must verify that each cement and solvent used in the affected source meets the emission limit, using any of the methods in § 63.5994(a).
(2) You must update the list of all the cements and solvents used at the affected source.
(3) With the compliance report for the reporting period during which you used the new cement or solvent, you must submit the updated list of all cements and solvents and a statement certifying that, as purchased, each cement and solvent used at the affected source during the reporting period met the emission limits in table 1 to this subpart.
[67 FR 45598, July 9, 2002, as amended at 89 FR 94909, Nov. 29, 2024; 91 FR 37276, June 22, 2026]