L. STANDARDS FOR LEAD LEVELS IN THE ENVIRONMENT AND EXPOSURE

Centers for Disease Control and Prevention: Recommendations to public health agencies and physicians.

Blood Lead Level Action
<10 g/dL Regular screening at 12 and 24 months and annually in higher risk areas
10-14 g/dL Rescreen child and monitor level. Community intervention when many children are at this level.
15-19 g/dL Rescreen child and monitor level. Educate parents. Test for iron deficiency. Investigate environment for source.
20-44 g/dL Complete medical evaluation. Identify and remove environmental lead sources.
45-69 g/dL Medical treatment and environmental assessment and remediation to create a lead safe environment.
>=70 g/dL Medical treatment and environmental assessment and remediation immediately.

 

Paint Guidelines

Define lead based paint as
600 ppm Consumer Product Safety Commission limit for lead in residential paint.

Testing by X-Ray Fluorescence (on-site) Analysis, HUD Standards
If the reading is 1.0 mg/cm2 or above HUD and EPA consider the paint to contain lead. Inconclusive results must be confirmed by atomic absorption laboratory test prior to abatement. This can show the presence of lead based paint, but not if it is a hazard.

Soil Guidelines
Between 400 and 2000, EPA guidelines recommend interim controls such as using wood chips, grass, or shrubs as groundcover for property used for residential purposes.

1000 ppm Classified as hazardous waste in Superfund sites.

Water Guidelines
15 ppb US Environmental Protection Agency maximum contaminent level for drinking water.  Corrosion control meassures should be put in place by the water company.  Households should let water run until temperature changes if household plumbing is the cluprit.

5ppb FDA standards for lead in bottled water

Air Guidelines
15. g/m3 EPA ambient air level limit with a 3 month average.

Ceramic Guidelines (USFDA and CA)
3.0 ppm Flatware (e.g.plates)
2.0 ppm Holloware, small (<1.1 liters)
1.5 ppm Holloware, large (>1.1 liters)
.5 ppm Mugs and pitchers

.5 ppm Mugs and pitchers

 

Glossary of Measurements
mg/cm2 Milligrams per square centimeter
ppb parts per billion
ppm parts per million
ug/cm2 micrograms per square centimeter
ug/dL micrograms per deciliter
ug/ft2 micrograms per foot squared
ug/m3 micrograms per cubic meter