EP 1110-1-29
31 Aug 01
a. Category 1: Interior Treatments, No Containment within Unit
(40 CFR 745.227(e)(8)(v)(B):
Two dust wipe samples shall be collected from up to four rooms, hallways, or stairwells
in units with more than four rooms, whether treated or untreated. Two dust wipe
samples shall be collected from no less than four rooms, hallways or stairwells in the
residential dwelling or child-occupied facility. A closet shall not be considered a
separate room. When a closet has been treated, the room to which it is attached shall
be tested. 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. The rooms in units greater than four rooms that will be sampled shall be
selected based on where the most dust generating work has been completed and on the
judgment of the clearance inspector;
One dust sample shall be taken from one interior window sill and window trough (if
present);
One dust sample shall be taken from the floor of each room, hallway or stairwell
selected; and,
b. Category 2: Interior Treatments, With Containment (plastic sheeting used as airlock
doors between treated and untreated areas), (40CFR745.227(e)(8)(v)(A)):
One dust wipe 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 on less than four rooms, hallways or stairwells within the containment area. In
addition one dust sample shall be taken from the floor outside of the containment area
within 10 feet of the airlock if present or the edge of the containment, in order to
determine the effectiveness of the containment system. This additional dust wipe sample
shall be collected in 20 percent of the treated units in multi-unit buildings (greater than
20 units) being assessed, and in all single-units being assessed; and,
c. Category 3:
Exterior Treatments:
Two dust wipe samples shall be collected for each exterior treatment;
One dust wipe sample shall be collected from a horizontal surface in part of the outdoor
living area (e.g., a porch floor or entryway); and,
The second dust wipe sample shall be collected from an exterior window trough on
each floor at or near the location of where the exterior work has been performed.
Additional trough samples shall be collected from the lower floors in close proximity to
the work, in order to determine if troughs below the subject area have been
contaminated by the work.
d. Category 4:
Soil Treatments
A-17
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