Play area means an area of frequent soil contact by children of less than 6 years of age as indicated by, 
but not limited to, such factors including the following: the presence of play equipment (e.g., sandboxes, 
swing sets, and sliding boards), toys, or other children’s possessions, observations of play patterns, or 
information provided by parents, residents, care givers, or property owners. 
Residential building means a building containing one or more residential dwellings. 
Reference Level(s) means levels that have been set by HUD and EPA to indicate surface dust that con¬ 
tains an amount of lead which may pose a threat of adverse health effects in pregnant women or children 
less than the age of six years of age. 
Room means a separate part of the inside of a building, such as a bedroom, living room, dining room, 
kitchen, bathroom, laundry room, or utility room. To be considered a separate room, the room must be sep¬ 
arated from adjoining rooms by built-in walls or archways that extend at least 6 inches from an intersecting 
wall. Half walls or bookcases count as room separators if built-in. Movable or collapsible partitions or parti¬ 
tions consisting solely of shelves or cabinets are not considered built-in walls. A screened in porch that is 
used as a living area is a room. 
Window trough means, for a typical double-hung window, the portion of the exterior window sill between 
the interior window sill (or stool) and the frame of the storm window. If there is no storm window, the win¬ 
dow trough is the area that receives both the upper and lower window sashes when they are both lowered. 
The window trough is sometimes referred to as the window ‘’well.” 
Wipe sample means a sample collected by wiping a representative surface of known area, as determined 
by ASTM El728, "Standard Practice for Field Collection of Settled Dust Samples Using Wipe Sampling 
Methods for Lead Determination by Atomic Spectrometry Techniques, or equivalent method, with an 
acceptable wipe material as defined in ASTM E 1792, "Standard Specification for Wipe Sampling Materials 
for Lead in Surface Dust.” 
XRF means a testing device that is capable of determining the presence of lead in a dust wipe sample. 
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