services shall not include any services to the extent such services are funded by any grant, contract, or otherwise by another person or any governmental agency. (3) Documentation required No credit shall be allowed under subsection (a) with respect to any radon abatement services for a certified historic structure for any taxable year unless— (A) after such services are complete, a qualified radon measurement professional provides written documentation to the taxpayer that includes— (i) evidence that the certified historic structure meets radon hazard evaluation criteria established under an authorized State or local program, and (ii) documentation showing that the radon abatement services meet the requirements of this section, and (B) the taxpayer files with the appropriate State agency and attaches to the tax return for the taxable year— (i) the documentation described in subparagraph (A), and (ii) documentation of the amounts paid or incurred for radon abatement services during the taxable year with respect to the certified historic structure. (4) Definitions (A) Qualified radon measurement professional The term qualified radon measurement professional means an individual who has demonstrated the minimum degree of appropriate technical knowledge and skills specific to radon measurement in conformance with the requirements of— (i) a certification standard promulgated by the American National Standards Institute or International Organization for Standardization, (ii) a State, local or other governmental licensing (or equivalent) program, or (iii) any other recognized or accredited certification process as determined by the Secretary. (B) Qualified radon mitigation professional The term qualified radon mitigation professional means an individual who has demonstrated the minimum degree of appropriate technical knowledge and skills specific to radon mitigation in conformance with the requirements of— (i) a certification standard promulgated by the American National Standards Institute or International