{"data":{"id":"us-dc/d.c.-code-28-4201","jurisdiction":"us-dc","citation":"D.C. Code § 28-4201","heading":"Proficiency requirement.","body":"(a)\nNo person or company shall conduct or offer to conduct radon screening, testing, or mitigation in the District for a fee unless the person who performs the service has been:\n(1)\nListed as proficient by the Environmental Protection Agency to offer radon screening, testing, or mitigation services; or\n(2)\nHas received a certificate of proficiency from an organization approved by the Mayor to offer radon screening, testing, or mitigation services.\n\n(b)\nThe Mayor shall maintain, revise as necessary, and make available to the public a list of persons or companies who have been listed as proficient by the United States Environmental Protection Agency to offer screening, testing, or mitigation for radon.","path":["Title 28. Commercial Instruments and Transactions. [Enacted title]","Chapter 42. Radon Contractor Proficiency."],"source_url":"https://code.dccouncil.gov/us/dc/council/code/sections/28-4201","current_through":"2026-08-20 (D.C. Law 26-175)","vintage":"","retrieved_at":"2026-08-29T05:44:07Z","sha256":"95fa8dab02f96b2057fdd0d7c2b69ce58188f280e590db4f4f5721b5d515707a","source_id":"us-dc","stale":false,"prev":"us-dc/d.c.-code-28-4103","next":"us-dc/d.c.-code-28-4202"},"notice":"GroundRules: Original legal text. Not legal advice."}