West Virginia Code of State Rules › Agency 64 - Health › Title 64 - LEGISLATIVE RULE WEST VIRGINIA DEPARTMENT OF HEALTH AND HUMAN RESOURCES › Series 64-45 - Lead Abatement Licensing › Table 64-45 D

Current through Register Vol. XLI, No. 28, July 12, 2024
MINIMUM NUMBER AND LOCATION OF SINGLE-SURFACE DUST
				  SAMPLES
Clearance Category
Category Description
Number and location of Single-Surface Wipe Samples
								in Each Area1
Number and Location of Composite Wipe
								Samples
1
Interior treatments
No containment within dwelling
Two dust samples from at least four rooms in
								dwelling (treated or untreated):
* One interior window sill or window trough,
								alternating between rooms.
* One floor.
AND
* For common areas, one for every 2,000 ft 5 of a
								common area room floor (if present)
Three composite samples for every batch of four
								rooms (whether treated or untreated):
* One floor composite.
* One interior window sill composite
* One window trough composite.
AND
* For common areas, one floor subsample for every
								2,000 ft 5 (if present); up to 8,000 ft 5 can be sampled for every
								composite.
2
Interior treatments
With containment (Plastic sheeting as airlock on
								doors between treated and untreated areas)
Same as Category 1 but only in every treated room
								(up to four rooms)
AND
One floor sample outside the containment area but
								within 10 feet of the airlock to determine the effectiveness of the containment
								system. This extra single-surface sample is recommended in 20 percent of the
								treated dwellings in multifamily housing and all single-family homes.
* For common areas, one floor sample for every
								2,000 ft 5 and one floor sample outside containment.
Same as Category 1 but only in every treated
								room
AND
One floor sample outside the containment area but
								within 10 feet of the airlock to determine the effectiveness of the containment
								system. This extra single-surface sample is recommended in 20 percent of the
								treated dwellings in multifamily housing and all single-family homes.
* For common areas, one floor subsample for every
								2,000 ft 5 (up to 8,000 ft 5 for each composite) and one floor sample outside
								containment.
3
Exterior treatments
Two dust samples as follows:
* At least one dust sample on a horizontal surface
								in part of the outdoor living area (e.g., a porch floor or entry way).
* One window trough sample on each floor where
								exterior work was performed. An additional trough sample should be collected
								from a few lower floors to determine if troughs below the area were
								contaminated by the work above.
Two dust samples as follows:
* One composite on a horizontal surface in part of
								the outdoor living area (e.g., a porch floor or entry way).
* One window trough composite for every four floors
								where exterior work was performed, including lower floors where exterior work
								was not done, if present.
4
Routine
maintenance work
At least 1 floor dust sample for every 20
								high-hazard jobs near the work area.
Same as single-surface sampling.
5
Soil treatment
One dust sample from the entryway.
One dust sample from the entryway.
1.A room includes a hallway or a
				  stairway If no window, just one floor sample must be collected When a closet is
				  treated, the room to which it is attached should be tested A closet is not
				  considered to be a separate room If all rooms received similar treatments and
				  cleaning, only four rooms need to be sampled for clearance purposes More rooms
				  may need to be sampled m larger dwellings The room to be sampled should be
				  selected based on where most of the dust-generating work was done or m the
				  judgment of the clearance examiner