(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
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