Guidelines recommended by the American Conference of Governmental Industrial Hygienists. TLVs are the airborne concentration of a substance below which all workers are believed to be protected while exposed to it day after day for 8-hour periods.
Georgia Institute of Technology
School of City and Regional Planning
245 4th St
Atlanta, GA 30332
The Built Environment and Public Health Clearinghouse was supported by the Centers for Disease Control & Prevention's Office of the National Prevention Strategy and Healthy Community Design Program and made possible through additional support from the American Public Health Association, the National Network of Public Health Institutes, and the American Planning Association's Planning and Community Health Research Center. Interested in adding to and supporting the Clearinghouse? Contact the Clearinghouse at email@example.com.