Potential lead hazards in pre-1978 childcare facilities in Southern Nevada

Figures & data

Table 1. Lead clearance standards set by the United States Environmental Protection Agency (EPA) and Department of Housing and Urban Development (HUD)

Sample type	Standards
XRF analysis	• 1 mg/cm^2
Dust samples	• Interior floors (carpeted and uncarpeted) = 40 g/ft^2 • Interior window sills = 250 µg/ft^2 • Window troughs = 400 ug/ft^2
Soil samples	• Bare play area = 400 ppm • Bare soil in non-play areas = 1,200 ppm • Abatement required = 5,000 ppm
Water samples	• 15 ug/L or 15 ppb or 0.015 mg/L

Source: U.S. Department of Housing and Urban Development (1995).

Figure 1. The number of Pre-1978 permitted childcare facilities in Clark County, NV by year of construction.

Figure 2. Soil lead concentration levels in parts per million (ppm) from Pre-1978 Clark County, NV permitted childcare facilities with bare soil.

Figure 3. Lead concentration in water in parts per billion (ppb) from Pre-1978 Clark County, NV permitted childcare facilities.

Figure 4. Lead concentration on interior floor dust samples in micrograms per foot squared (μg/ft²) from Pre-1978 Clark County, NV permitted childcare facilities.

Figure 5. Lead concentration in window sill dust samples in micrograms per foot squared (μg/ft²) from Pre-1978 Clark County, NV permitted childcare facilities.

U.S. Department of Housing and Urban Development. (1995). HUD guidelines for the evaluation and control of lead-based paint hazards in housing. Washington, DC: US Dept Housing and Urban Development.

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