CFR › Title 40 › Part 469 › §469.2340 CFR §469.23Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkThe certification alternative to monitoring for Total Toxic Organics (TTO) described in § 469.13 (a), (b), (c), and (d) is applicable to this subpart.