Reference Source

Hexavalent chromium

For Hexavalent chromium, cfr section is 1910.1026; action level is a concentration of airborne chromium (VI) of 2.5 micrograms per cubic meter of air (2.5 µgm/m 3) calculated as an 8-hour time-weighted average (TWA); pel is 5 micrograms per cubic meter of air (5 µgm/m 3), calculated as an 8-hour time-weighted average (TWA); surveillance trigger is Who are or may be occupationally exposed to chromium (VI) at or above the action level for 30 or more days a year; exam frequency is The employer shall provide a medical examination: (i) Within 30 days after initial assignment, unless the employee has received a chromium (VI) related medical examination that meets the requirements of this paragraph within the last twelve months; (ii) Annually, verified against its source on 2026-09-17.

Substance
Hexavalent chromium verified
CFR section
1910.1026
Action level
a concentration of airborne chromium (VI) of 2.5 micrograms per cubic meter of air (2.5 µgm/m 3) calculated as an 8-hour time-weighted average (TWA) verified
PEL
5 micrograms per cubic meter of air (5 µgm/m 3), calculated as an 8-hour time-weighted average (TWA) verified
Surveillance trigger
Who are or may be occupationally exposed to chromium (VI) at or above the action level for 30 or more days a year verified
Exam frequency
The employer shall provide a medical examination: (i) Within 30 days after initial assignment, unless the employee has received a chromium (VI) related medical examination that meets the requirements of this paragraph within the last twelve months; (ii) Annually verified
Record retention
The employer shall ensure that medical records are maintained and made available in accordance with verified
Sourcelaw.cornell.edu
Verified
Review by
DatasetOSHA medical surveillance trigger thresholds by substance

What the source says

Assistant Secretary of Labor for Occupational Safety and Health, U.S. Department of Labor, or designee. Chromium (VI) [hexavalent chromium or Cr(VI)] means chromium with a valence of positive six, in any form and in any compound.

— 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.

Action level

(b) Definitions. For the purposes of this section the following definitions apply: Action level means a concentration of airborne chromium (VI) of 2.5 micrograms per cubic meter of air (2.5 µgm/m 3) calculated as an 8-hour time-weighted average (TWA).

PEL

This section means this § 1910.1026 chromium (VI) standard . (c) Permissible exposure limit (PEL). The employer shall ensure that no employee is exposed to an airborne concentration of chromium (VI) in excess of 5 micrograms per cubic meter of air (5 µgm/m 3), calculated as an 8-hour time-weighted average (TWA).

Surveillance trigger

(k) Medical surveillance —(1) General. (i) The employer shall make medical surveillance available at no cost to the employee, and at a reasonable time and place, for all employees: (A) Who are or may be occupationally exposed to chromium (VI) at or above the action level for 30 or more days a year;

Exam frequency

(B) Experiencing signs or symptoms of the adverse health effects associated with chromium (VI) exposure; or (C) Exposed in an emergency. (ii) The employer shall assure that all medical examinations and procedures required by this section are performed by or under the supervision of a PLHCP . (2) Frequency. The employer shall provide a medical examination: (i) Within 30 days after initial assignment, unless the employee has received a chromium (VI) related medical examination that meets the requirements of this paragraph within the last twelve months; (ii) Annually;

Record retention

(i) The employer shall establish and maintain an accurate record for each employee covered by medical surveillance under paragraph (k) of this section. (ii) The record shall include the following information about the employee: (A) Name; (B) A copy of the PLHCP's written opinions; (C) A copy of the information provided to the PLHCP as required by paragraph (k)(4) of this section. (iii) The employer shall ensure that medical records are maintained and made available in accordance with 29 CFR 1910.1020 .

— all from law.cornell.edu, retrieved 2026-08-12

Source

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