Asbestos
For Asbestos, cfr section is 1910.1001; pel is 0.1 fiber per cubic centimeter of air as an eight (8)-hour time-weighted average (TWA); surveillance trigger is exposed to airborne concentrations of fibers of asbestos at or above the TWA and/or excursion limit; exam frequency is Periodic medical examinations shall be made available annually; record retention is this record is maintained for the duration of employment plus thirty (30) years, verified against its source on 2026-09-17.
- Substance
- Asbestos verified
- CFR section
- 1910.1001
- PEL
- 0.1 fiber per cubic centimeter of air as an eight (8)-hour time-weighted average (TWA) verified
- Surveillance trigger
- exposed to airborne concentrations of fibers of asbestos at or above the TWA and/or excursion limit verified
- Exam frequency
- Periodic medical examinations shall be made available annually verified
- Record retention
- this record is maintained for the duration of employment plus thirty (30) years verified
What the source says
HEPA filter . (l) Medical surveillance—(1) General—(i) Employees covered. The employer shall institute a medical surveillance program for all employees who are or will be exposed to airborne concentrations of fibers of asbestos at or above the TWA and/or excursion limit.
— law.cornell.edu, retrieved 2026-08-12
Where each value comes from
This source states these in separate places, so each value is shown with the passage that states it.
PEL
Thermal System Insulation ACM means thermal system insulation which contains more than 1% asbestos. (c) Permissible exposure limit (PELS)—(1) Time-weighted average limit (TWA). The employer shall ensure that no employee is exposed to an airborne concentration of asbestos in excess of 0.1 fiber per cubic centimeter of air as an eight (8)-hour time-weighted average (TWA) as determined by the method prescribed in appendix A to this section, or by an equivalent method.
Exam frequency
Classification of all chest X-rays shall be conducted in accordance with appendix E to this section. (3) Periodic examinations . (i) Periodic medical examinations shall be made available annually.
Record retention
(ii) The record shall include at least the following information: (A) The name of the employee; (B) Physician's written opinions; (C) Any employee medical complaints related to exposure to asbestos; and (D) A copy of the information provided to the physician as required by paragraph (l)(6) of this section. (iii) The employer shall ensure that this record is maintained for the duration of employment plus thirty (30) years, in accordance with 29 CFR 1910.1020 .
— all from law.cornell.edu, retrieved 2026-08-12
Source
- law.cornell.eduhttps://www.law.cornell.edu/cfr/text/29/1910.1001