Michigan Administrative Code › Department - Health and Human Services › Bureau of Disease Control, Prevention and Epidemiology › Lead Hazard Controls › Part 4 - WORK PRACTICE STANDARDS › Section R. 325.99407 - Clearance procedures

Current through Vol. 24-12, July 15, 2024
Rule 407.
(1) A
				  clearance examination shall be performed in target housing and child-occupied
				  facilities following all lead hazard control activities.
(2) Only a certified inspector or risk
				  assessor shall perform clearance procedures following abatement.
(3) A certified clearance professional who is
				  completely independent of the lead hazard control firm shall conduct clearance
				  procedures following any lead hazard control activity according to the
				  following procedures:
(a) Conduct a visual
				  inspection for clearance testing to determine if deteriorated painted surfaces
				  described in the scope of hazard control work, or visible amounts of dust,
				  debris, or residue are still present. If deteriorated painted surfaces
				  described in the scope of hazard control work, or visible amounts of dust,
				  debris, or residue are present, then the person conducting the lead hazard
				  control activity shall eliminate the conditions before continuing the clearance
				  procedures.
(b) After the visual
				  inspection and any post-project cleanup required by subdivision (a) of this
				  subrule, an independent clearance professional shall conduct clearance
				  dust-lead sampling. Clearance sampling shall be conducted as appropriate based
				  upon the extent or manner of lead hazard controls conducted in or to the
				  residential dwelling or child-occupied facility. All of the following
				  provisions apply to lead hazard control clearance sampling:
(i) After conducting lead hazard control
				  activities using containment of work areas, the clearance professional shall
				  take 1 dust sample from 1 window, if available, and 1 dust sample from the
				  floor of not less than 4 rooms, hallways, stairwells, or room equivalents
				  within the containment area. Dust samples from windows shall be collected by
				  alternating the sill and trough in each room, to the extent possible. In
				  addition, the clearance professional shall take 1 dust sample from the floor
				  outside the containment area. If there are less than 4 rooms, hallways,
				  stairwells, or room equivalents within the containment area, then the clearance
				  professional shall sample all rooms, hallways, and stairwells.
(ii) After conducting hazard control
				  activities with no containment, the clearance professional shall take 1 dust
				  sample from 1 window, if available, and 1 dust sample from the floor of not
				  less than 4 rooms, hallways, stairwells, or room equivalents in the residential
				  dwelling or child-occupied facility, to include sleeping areas of 1 or more
				  children, 6 years of age or less. Dust samples from windows shall be collected
				  by alternating the sill and trough in each room, to the extent possible. If
				  there are less than 4 rooms, hallways, stairwells, or room equivalents within
				  the residential dwelling or child-occupied facility, then the clearance
				  professional shall sample all rooms, hallways, and stairwells.
(iii) The clearance professional shall take
				  dust samples for clearance purposes using documented methodologies that
				  incorporate adequate quality control procedures.
(iv) The clearance professional shall take
				  dust samples for clearance purposes not less than 1 hour after completion of
				  final lead hazard control cleanup activities.
(c) The clearance professional shall select
				  the rooms, hallways, stairwells, or room equivalents for sampling according to
				  documented methodologies, as is defined in rule 325.99401(2).
(d) The certified clearance professional
				  shall compare the residual lead level, as determined by appropriate analysis,
				  from each dust sample with applicable clearance levels for lead in dust. If the
				  residual lead levels in a dust sample exceed the clearance levels, then the
				  person conducting the lead hazard control activity shall reclean, and the
				  clearance professional shall retest all the components represented by the
				  failed sample until clearance levels are met.