Carbon Tetrachloride (CTC)

APPLIES TO CTC PRODUCTS

Including:

• Manufacturers (includes importers to US)
• Producers (including importers)
• Processors
• Distributors
• Users or
• Disposal

NOTE: This does not apply to CTC solely present unintentionally in trace quantities with another chemical substance or mixture.

COMPLIANCE DEADLINES

Effective Date of Rule: January 17, 2025

Prohibitions from the manufacture, processing, and distribution of CTC:

• June 16, 2025 - For these conditions of use:
  • Processing
  • Industrial and commercial
• December 18, 2025 - For these conditions of use:
  • Industrial and commercial use as a laboratory chemical (specialty)
  • Laboratory chemical use by the U.S. Department of Defense

Existing chemical exposure limit (ECEL) Compliance

• September 9, 2026 - Non-Federal Owners/Operators (NF O/O)
• September 20, 2027 - Federal Agency/Federal Contractor (FA/FC)
  • Within 4 months from introduction of CTC after June 11, 2026, compliance with the ECEL is required.
  • If satisfactory monitoring results are available within 5 years prior to February 18, 2025, these results may be used.

Initial Monitoring

• June 11, 2026 - NF O/O
• June 21, 2027 - FA/FC
  • Initial monitoring shall take place within 30 days of introduction of CTC into the workplace.

Establishment of Regulated Areas

• September 9, 2026 - NF O/O
• September 20, 2027 - FA/FC

Direct Dermal Contact Controls (DDCC)

• June 16, 2025 - NF O/O
• September 20, 2027 - FA/FC

Exposure control procedures and plan - established and implemented by December 3, 2027

• An exposure control plan must be established and implemented; including documentation on the hierarchy of controls

Workplace Information and Training for potentially exposed persons

• September 9, 2026 - NF O/O
• September 20, 2027 - FA/FC

Respiratory Protection

• September 9, 2026 - NF O/O
• September 20, 2027 - FA/FC
  • Within three months after receipt of any exposure monitoring that indicates exposures exceeding the ECEL, respiratory protection is provided
  • A written respiratory protection program consistent with the requirements of 29 CFR 1910.134(c)(l), (c)(3) and (c)(4) must be developed/implemented

Dermal Protection - Laboratory

• June 16, 2025 - NF O/O
• September 20, 2027 - FA/FC

Workplace Restrictions for Industrial and commercial specialty uses, including use as a laboratory chemical

• June 16, 2025 - NF O/O
• December 18, 2025 - FA/FC

Downstream Notification - Manufacturers (including importers), processors, or distributors in commerce must notify (in writing) the TSCA restrictions of CTC to companies whom CTC is shipped

• February 18, 2025 - Manufacturers (including importers)
• June 16, 2025 - Processors or distributors in commerce

Recordkeeping Requirements - Manufacturers (including importers), processors, distributors in commerce, or those engaged in industrial or commercial use of CTC must maintain the following records by:

• February 18, 2025
  • Ordinary business records
  • WCPP compliance
  • Workplace requirements for laboratory use compliance

WORKPLACE CHEMICAL PROTECTION PROGRAM (WCPP) REQUIRED FOR THESE USES:

• Manufacturing and processing for export
• Domestic manufacture, except where CTC is manufactured solely as a byproduct
• Import
• Processing as a reactant in the production of hydrochlorofluorocarbons, hydrofluorocarbons, hydrofluoroolefins and perchloroethylene
• Processing, including incorporation into formulation, mixture, or reaction products for agricultural products manufacturing, vinyl chloride manufacturing, and other basic organic and inorganic chemical manufacturing
• Processing, including repackaging for use as a laboratory chemical
• Processing, including recycling
• Industrial and commercial use as an industrial processing aid in the manufacture of agricultural products and vinyl chloride
• Industrial and commercial use in the elimination of nitrogen trichloride in the production of chlorine and caustic soda and the recovery of chlorine in tail gas from the production of chlorine
• Disposal

WCPP FOR CTC REQUIRES:

Requirements per 40 CFR Part 751 Subpart H - Carbon Tetrachloride

Initial monitoring and SEG Development - by June 11, 2026 (NF O/O) or June 21, 2027 (FA/FC)

• SEG Development and Monitoring for CTC Users

Compliance with EPA exposure limits - by September 9, 2026 (NF O/O) or September 20, 2027 (FA/FC)

• ECEL - 0.03 ppm 8-Hour TWA
• Action Level - 0.02 ppm 8-Hour TWA

Regulated areas must be established and maintained wherever airborne concentrations of CTC exceeds or can reasonably be expected to exceed the ECEL - By September 9, 2026 (NF O/O) or September 20, 2027 (FA/FC)

Direct Dermal Contact Controls (DDCC) - by June 16, 2025 (NF O/O) or September 20, 2027 (FA/FC)

Hierarchy of Controls must be applied to ensure no person exposed to at or above the ECEL or after December 3, 2027

Full Exposure Control Plans implemented - by December 3, 2027

• Documenting selection of controls and maintenance of controls

Respiratory Protection by September 9, 2026 (NF O/O) or September 20, 2027 (FA/FC)

• Within three months after receipt of any exposure monitoring that indicates exposures exceeding the ECEL, respiratory protection is provided.
• A written respiratory protection program consistent with the requirements of 29 CFR 1910.134(c)(l), (c)(3) and (c)(4) must be developed/implemented.

Dermal Protection - by June 16, 2025 (NF O/O) or September 20, 2027 (FA/FC)

Workplace Restrictions for Industrial and Commercial Use as a Laboratory Chemical - by June 16, 2025 (NF O/O) or December 18, 2025 (FA/FC)

Workplace Information and Training for potentially exposed persons - by September 9, 2026 (NF O/O) or September 20, 2027 (FA/FC)

Recordkeeping and notification requirements

EXPOSURE CONTROL PLAN REQUIREMENTS

• The owner or operator must not implement a schedule of personnel rotation as a means of compliance with the ECEL.
• The owner or operator must maintain the effectiveness of any controls implemented.
• The exposure control plan must be reviewed and updated as necessary, but at least every 5 years, to reflect any significant changes.

EXPOSURE CONTROL PLAN AVAILABILITY

• Owners or operators must make the exposure control plan and associated records available to potentially exposed persons, including
  • Exposure monitoring records
  • - Respiratory protection program implementation
  • - Dermal protection program implementation
• Owners or operators must notify potentially exposed persons of the availability of the plan and associated records within 30 days of the date that the exposure control plan is completed and at least annually thereafter.

EXPOSURE CONTROL PLAN AVAILABILITY

The owner or operator must provide the specified records at a reasonable time, place, and manner upon request by the potentially exposed person.

EXPOSURE MONITORING RECORD REQUIREMENTS FOR OWNERS/OPERATORS

1. For each monitoring event of CTC required under this subpart, must also document the following:

   1. All measurements that may be necessary to determine the conditions that may affect the monitoring results;
   2. The identity of all other potentially exposed persons whose exposure was not measured and whose exposure is intended to be represented by the area or representative sampling monitoring;
   3. Use of established analytical methods;
   4. Compliance with the Good Laboratory Practice Standards or use of a laboratory accredited by the AIHA or another industry-recognized program; and
   5. Information regarding air monitoring equipment including:
      • Type, maintenance, calibrations, performance tests, limits of detection, and any malfunctions.
2. Copies of exposure monitoring notifications provided to affected individuals

PERSONNEL BREATHING ZONE SAMPLING OPTIONS

• For each potentially exposed person or representative of each potentially exposed person’s you must determine exposure per below:
  • The owner or operator has taken one or more personal breathing zone air samples for at least one potentially exposed person in each job classification in a work area during every work shift, and the person sampled is expected to have the highest CTC exposure.
  • Personal breathing zone air samples taken during one work shift may be used to represent potentially exposed person exposures on other work shifts where the owner or operator can document that the tasks performed and conditions in the workplace are similar across shifts.

PERSONNEL BREATHING ZONE PERIODIC MONITORING REQUIREMENTS

USE OF OBJECTIVE DATA

Objective data generated within the last 5 years prior to February 18, 2025, that demonstrates to EPA that CTC cannot be released in the workplace in airborne concentrations at or above the ECEL action level (0.02 ppm 8-hour TWA) and that the data represents the highest CTC exposures likely to occur under conditions of use.

ADDITIONAL MONITORING REQUIREMENTS

Additional exposure monitoring must be conducted whenever there has been a:

• Change in the production, process, control equipment, personnel or work practices or other reason that may reasonably be expected to result in new or additional exposures above the ECEL .
• Start ups or shutdowns, or ruptures, malfunctions or other breakdowns or if an unexpected releases occurs that may lead to exposure to potentially exposed persons. Prior monitoring data cannot be used to meet this requirement.

MONITORING REQUIREMENTS - OBSERVATION

• Owners and operators must provide potentially exposed persons or their designated representatives an opportunity to observe CTC exposure monitoring .
• When monitoring observation requires entry into a regulated area, the owner or operator must provide the observers with the required PPE.
• Only persons who are authorized to have access to facilities classified in the interest of national security must be permitted to observe exposure monitoring conducted in such facilities.

EXPOSURE MONITORING RESULTS NOTIFICATION

Inform each person whose exposures are monitored or who is part of a monitored exposure group and their designated representatives of any monitoring results within 15 working days of receipt of those monitoring results.

This notification must include the following:

• Exposure monitoring results;
• Identification and explanation of the ECEL and ECEL action level;
• Statement of whether the monitored airborne concentration of CTC exceeds the ECEL action level or ECEL;
• If the ECEL is exceeded, descriptions of any exposure controls implemented by the owner or operator to reduce exposures to or below the ECEL;
• Explanation of any required respiratory protection provided;
• Quantity of CTC in use at the time of monitoring;
• Location of CTC use at the time of monitoring;
• Manner of CTC use at the time of monitoring; and
• Identified releases of CTC;

Notice must be written in plain language and either provided to each potentially exposed person and their designated representatives individually in a language that the person understands or posted in an appropriate and accessible location outside the regulated area with an English-language version and a non-English language version representing the language of the largest group of workers who do not read English.

PROVISION OF RESPIRATORY PROTECTION

• Ensure that each person who enters a regulated area is supplied with a respirator selected in accordance with this rule and must ensure that all persons within the regulated area are using the provided respirators whenever CTC exposures may exceed the ECEL.

PROHIBITED ACTIVITIES IN REGULATED AREAS

• The owner or operator must ensure that, within a regulated area, persons do not engage in non-work activities which may increase CTC exposure.
• The owner or operator must ensure that while persons are wearing respirators in the regulated area, they do not engage in activities which interfere with respirator performance.

DIRECT DERMAL CONTACT CONTROLS (DDCC).

• Ensure that all persons are separated, distanced, physically removed, or isolated to prevent direct dermal contact with CTC or from contact with equipment or materials on which CTC may exist.
• Institute one or a combination of elimination, substitution, engineering controls, or administrative controls to prevent all persons from direct dermal contact. Demonstrate where not feasible.
• Dermal protection must be used when required controls do not completely prevent direct dermal contact
• Where an owner or operator cannot demonstrate that direct dermal contact to carbon tetrachloride is prevented through the use of controls required above and has not demonstrated that it has appropriately supplemented with dermal protection, this will constitute a failure to comply with the DDCC requirements.

GENERAL RECORDKEEPING REQUIREMENTS

General records

• All persons who manufacture (including import), process, distribute in commerce, or engage in industrial or commercial use of CTC must maintain ordinary business records, such as:
  • Downstream notifications
  • Invoices
  • Bills-of-lading
• Record related to compliance with the prohibitions, restrictions, and other provisions of the rule.