Explanation:
RULE 1070
OCCUPATIONAL HEALTH AND ENVIRONMENTAL CONTROL
1071: General Provisions
(1) This rule establishes threshold limit values for toxic and carcinogenic substances and physical agents, which may be present in the atmosphere of the work environment. Threshold
Limit Values refer to airborne concentration of substances and represent conditions under
which it is believed that nearly all workers may be repeatedly exposed daily without adverse
effect.
(2) The Regional Office, on the advice of the Director, may issue a special rule establishing thresh-
hold limit values for toxic substances not found in the table and such rule shall remain in effect
until a permanent standard is issued by the Secretary.
(3) The Secretary shall periodically review or update the Standards on threshold limit values, per-
missible noise exposure levels, illumination levels, human carcinogens, temperature and
and humidity and other technical standards upon recommendation of a technical committee
in the Bureau of Working Conditions. The member of the technical committee shall either
be a physician, engineer, chemist or nurse who has completed at least an occupational health/
occupational safety and health-training course required by this Standards, and who has been
an occupational health/occupational safety and health practitioner for not less than three
(3) years. Other members of the technical committee shall be drawn from the labor and employers’ sectors. The technical committee shall be convened by the Director of the Bureau
of Working Conditions as the need for review of the abovementioned technical standards
arises. The Standards formulated by the technical committee shall become effective upon
announcement by the Secretary of Labor and Employment.
1072: Threshold Limit Values for Airborne Contaminants
1072.01:
Threshold limit values refer to time weighted concentrations for an 8-hour workday and a total of
fortyeight (48) hours work of exposure per week.
