Section 650. Post-abatement clearance procedures

The following post-abatement clearance procedures shall be performed by a licensed inspector or licensed risk assessor:

1. Following an abatement, a visual inspection shall be performed by the licensed inspector or licensed risk assessor to determine if there are any deteriorated painted surfaces or visible amounts of dust, debris, or residue still present. If deteriorated painted surfaces or visible amounts of dust, debris, or residue are present, these conditions must be eliminated prior to the continuation of the clearance procedures.

2. Following a successful visual inspection for clearance, but no sooner than one hour after completion of final post abatement clean-up, clearance sampling shall be conducted.

3. Clearance sampling may be conducted by employing single-surface or composite sampling techniques, and shall be taken using documented methodologies that incorporate adequate quality control procedures.

4. The following post-abatement clearance activities shall be conducted, as appropriate, based upon the extent or manner of abatement activities conducted in or to the residential dwelling or child-occupied facility.

a. After conducting an abatement with containment between abated and unabated areas, one dust sample shall be taken from one interior window sill and from one window trough (if present) and one dust sample shall be taken from the floors of each of no less than four rooms, hallways, or stairwells within the containment area. In addition, one dust sample shall be taken from the floor outside the containment area. If there are less than four rooms, hallways, or stairwells within the containment area, then all rooms, hallways or stairwells shall be sampled.

b. After conducting an abatement with no containment, two dust samples shall be taken from each of no less than four rooms, hallways, or stairwells in the residential dwelling or child-occupied facility. One dust sample shall be taken from one interior window sill and window trough (if present) and one dust sample shall be taken from the floor of each room, hallway, or stairwell selected. If there are less than four rooms, hallways, or stairwells within the residential dwelling or child-occupied facility, then all rooms, hallways, or stairwells shall be sampled.

c. Following an exterior paint abatement, a visual inspection shall be conducted. All horizontal surfaces in the outdoor living area closest to the abated surfaces shall be found to be cleaned of visible dust and debris. In addition, a visual inspection shall be conducted to determine the presence of paint chips on the dripline or next to the foundation below any exterior surface abated. If paint chips are present, they must be removed from the site and properly disposed of, according to all applicable federal, state, and local requirements.

5. The rooms, hallways, or stairwells selected for sampling shall be selected according to documented methodologies.

6. The licensed inspector or licensed risk assessor shall compare the residual lead level (as determined by the laboratory analysis) from each single surface dust sample with the clearance levels, as established in 40 CFR Part 745 Subpart D, for lead in dust on floors, interior window sills, and window troughs or from each composite dust sample with the applicable clearance levels for lead in dust on floors, interior window sills, and window troughs divided by half the number of subsamples in the composite sample. If the residual lead level in a single surface dust sample equals or exceeds the applicable clearance level or if the residual lead level in a composite dust sample equals or exceeds the applicable clearance level divided by half the number of subsamples in the composite sample, the components represented by the failed sample shall be recleaned and retested.

7. In multi-family dwellings with similarly constructed and maintained residential dwellings, random sampling for the purpose of clearance may be conducted provided:

a. The licensed individuals who abate or clean the residential dwellings do not know which residential dwelling will be selected for the random sample.

b. A sufficient number of residential dwellings are selected for dust sampling to provide a 95% level of confidence that no more than 5.0% or 50 dwellings (whichever is less) in the randomly sampled population exceed the appropriate clearance levels.

c. The randomly selected residential dwellings shall be sampled and evaluated for clearance according to the procedures found in this chapter.

Historical Notes

Derived from Volume 13, Issue 02, eff. November 13, 1996; amended, Virginia Register Volume 19, Issue 24, eff. October 1, 2003.

Statutory Authority

§ 54.1-501 of the Code of Virginia.