Home › CFR › Title 40 › Part 70040 CFR Part 700 — GeneralSubpart A — Addresses§ 700.17— Addresses for the Office of Pollution Prevention and Toxics.Subpart C — Fees§ 700.40— Purpose and applicability.§ 700.41— Radon user fees.§ 700.43— Definitions applicable to this subpart.§ 700.45— Fee payments.§ 700.49— Failure to remit fees.