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CFR › Title 40 › Part 257 › §257.4

40 CFR §257.4

Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗

These criteria become effective October 15, 1979.

Source text from the eCFR (CFR) and the Office of the Law Revision Counsel (U.S. Code). Stacks shows the law verbatim; it is not legal advice.