Section 178-22-022 - FINAL CLEARANCE AIR SAMPLINGThe licensed individual performing final clearance air sampling must do the following:
(A) All persons performing final clearance air sampling must wear protective clothing and be licensed by the Department as a supervisor, inspector, management planner, project monitor or project designer. All persons performing final clearance air sampling must be independent of the contractor and selected by the owner or operator of the structure on or in which the asbestos project is conducted.(B) Final clearance air sampling must not be performed until after the contractor has completed the second cleaning step required by 178 NAC-22-011.04 and until the work area is dry.(C) When final clearance air sampling is performed, the following procedures must be used: (i) With only airtight temporary barriers in place, the person conducting final clearance air sampling must visually observe the work area and must observe behind the airtight temporary barriers to verify that the business entity has removed all asbestos containing material, dust and debris in the work area as required by 178 MAC 22-011.03(E). If any asbestos containing material, dust or debris is found by the person conducting final clearance air sampling, the work area must be recleaned by the licensed or waivered business entity or licensed individual conducting the project. If an airtight temporary barrier must be breached for cleaning or recleaning purposes, the area behind the breach must be cleaned and the barrier immediately repaired.(ii) Once the work area has passed a visual observation, the person performing final clearance air sampling must sweep an air stream from a high speed leaf blower or equivalent device across all surfaces.(iii) Immediately following the activity in 178 NAC 22-022(B), final clearance air sampling must be performed in the work area.(1) Air samples must be collected by a pump capable of drawing a volume which is equal to or greater than 1,199 liters of air through each 25 millimeter filter at a rate equal to or greater than one liter and less than ten liters per minute if using the Transmission Electron Microscopy Method or the NIOSH 7400 method may be utilized if using the Phase Contrast Microscopy method. The flow rate for the pump must be calibrated by a primary or secondary source at the beginning and end of the sampling period.(2) A minimum of five air samples must be taken inside the containment area.(3) In order to collect the samples, cassettes must be placed 5 to 6 feet above the floor at a 45-degree angle down. Cassettes must be uniformly distributed throughout the work area. If the work area contains more than one room, place at least one cassette in each room, if the work area contains more than five rooms, select a representative sample of rooms. Each cassette will be subject to normal air circulation, avoiding room corners, obstructed locations, and sites near windows, doors, or vents.(iv) Air samples will be analyzed for Transmission Electron Microscopy using the Environmental Protection Agency method set forth in Appendix A to 40 CFR 763 or an equivalent method, or will be analyzed for Phase Contrast Microscopy using the NIOSH 7400 method or an equivalent method. The analyst doing a Phase Contrast Microscopy analysis must be NIOSH 582 or 582E trained.(v) Final clearance air sampling results must be provided within 30 days to the Department by the person who performed the sampling. When the results are submitted, the person who performed the sampling must, in addition, certify the following to the Department: (1) A visual inspection of the work area was performed prior to final clearance air sampling and the work area was free of asbestos containing material, dust and debris from the material intended to be removed before the samples were taken.(2) The sampling was performed according to the regulations.(3) The Phase Contrast Microscopy air samples were analyzed by a person who has been NIOSH 582 or 582E trained. In order that this information may be verified, the name and address of the person, or laboratory, performing the analysis must also be included.178 Neb. Admin. Code, ch. 22, § 022
Amended effective 9/20/2023