Nebraska Administrative Code › Topic - HEALTH AND HUMAN SERVICES SYSTEM › Title 178 - ENVIRONMENTAL HEALTH › Chapter 22 - ASBESTOS PROJECTS › Section 178-22-022 - FINAL CLEARANCE AIR SAMPLING

Current through June 17, 2024
The 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.