CFR › Title 42 › Part 136a › §136a.5642 CFR §136a.56Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkDocuments required by § 36a.54 must be maintained for three years pursuant to the retention and custodial requirements for records at 45 CFR 74.20 et seq.