1. (1) Radon means the radioactive noble gas radon-222.
2. (2) Radon testing firm means a commercial business which uses equipment or provides detectors for testing for radon or radon decay products and which provides the results of such tests to customers.

3. (3) Radon mitigation firm means a commercial business which evaluates buildings for the purpose of developing plans for reducing indoor air radon levels, and/or implements measures designed to reduce such levels within existing buildings.

   (b) General requirements.

4. (1) A radon testing firm shall report to the department in writing, within 30 days following the end of a reporting period, a summary of all indoor air radon screening and long-term radon tests performed in the State during that reporting period. Reporting periods shall be from January 1st to June 30th and July 1st to December 31st of each year. The report shall include the dates for which the report is made and the number of such measurements performed for the reporting period in each county or ZIP code area in the State.
5. (2) When any radon screening or long-term testing result exceeds 20 pCi/1 or 0.1 working level as defined in section 16.2(a)(145) of this Part, the radon testing firm shall advise the customer, if a resident of this State, in writing to contact the New York State Department of Health, Bureau of Environmental Radiation Protection, for further technical advice and assistance.
6. (3) A radon mitigation firm shall report to the department in writing, within 30 days following the end of a reporting period, a summary of the number of homes mitigated in the State during that reporting period. Reporting periods shall be from January 1st to June 30th and July 1st to December 31st of each year. The report shall include the dates for which the report is made and the number of buildings for which mitigation was performed for the reporting period in each county or ZIP code area in the State.

(a) Definitions.

As used in this Part: