RMS-MF 2018 with 12/20 Addenda

3 ANSI/AARST RMS-MF 2018 (with 1220 addenda) Radon Mitigation Standards for Multifamily Buildings 3.3.1 Oversight required A qualified mitigation professional should be physically present or ensure a responsible person is present during onsite activities and immediately available to direct, instruct and oversee activities of other individuals, mitigation installers and other professionals engaged in installation activities for the mitigation system(s). 4.0 GENERAL PRACTICES 4.1 Assemble Building Information 4.1.1 Existing radon measurements The contractor shall request from the client all radon measurement reports for the common building structure(s) or portion(s) of the building(s) to be mitigated. Note— Contractor review of all measurements is important when developing an appropriate mitigation strategy. 4.1.1.1 Insufficient Test Data The contractor shall advise the client in writing that retesting or additional testing is required when existing tests are insufficient to characterize dynamics of radon entry into the building as it relates to diminished capacity for either: a) design of appropriate radon mitigation system(s); and/or b) protection for all occupants of the building. 4.1.1.1.1 Retest Criteria Conditions that warrant the retest requirement include: a) Tested locations were of insufficient quantity; b) Time periods do not reflect average conditions for building occupancy; c) The latest test data are older than 12 months and thereby comparisons of current and previous operating conditions for the building are not quantifiable; or d) Testing practices do not comply with national or state protocols including for lack of appropriate test locations, test durations, closed-building conditions or approved test devices. Appropriate testing protocols are those required by the state where the measurements were conducted, or in absence of state requirements specific to schools and large buildings, in accordance with the most current version of ANSI/AARST MAMF “Protocol for Conducting Measurements of Radon and Radon Decay Products in Multifamily Buildings.” Exceptions: The contractor is permitted to proceed with mitigation designs and installations when extenuating circumstances warrant immediate action. Examples of situations that could warrant action even though existing test surveys are insufficient include but are not limited to: a) protection of occupants in areas that clearly indicate elevated radon concentrations; and b) time constraints for building use schedules and other client concerns. 4.1.2 Building specifications Note—The contractor should request that the client provide any available information on the building, such as construction specifications, that might be of value in determining the mitigation strategy. 4.1.3 Known hazards The contractor shall request that the client provide information regarding all known safety hazards for the building and adjacent or nearby buildings that might be related to design and installation of the mitigation systems. Information of concern, among others, includes for asbestos, lead paint or other hazards. Note—It is recommended that the contractor contact the building’s safety officer or facility manager, if applicable, to help identify known hazards.