| Air |
50 mg/m3 - PEL (8 hour TWA) |
OSHA 29 CFR 1910.1025 |
| 30 mg/m3 - AL (8 hour TWA) |
OSHA 29 CFR 1926.62 |
| Surfaces |
40 mg/ft2 (Floors) |
Federal Register, Jan. 5, 2001 - U.S. EPA
40 CFR Part 745 |
| 250 mg/ft2 (Window sills) |
| 400 mg/ft2 (Window troughs) |
| Soil |
100 - 1000 ppm |
Varies by state
U.S. EPA, 40 CFR Part 745 |
| 400, 1200 ppm |
| Drinking Water |
15 mg/L |
EPA 40 CFR part 141.80 |
| New Paint |
0.06 % by weight or 600 ppm |
CPSC (1978) residential paints, toys, furniture |
| Paint Requiring Abatement |
1.0 mg/cm2 or 0.5 % by weight or 5000 ppm |
U.S. EPA, 40 CFR Part 745
HUD, 24 CFR Part 35 |
| Hazardous Waste |
5 mg/L (ppm) TCLP |
EPA 40 CFR 261 |
