HAZWOPER 40-Hour cheat sheet

A written site safety and health plan is required whenever a HAZWOPER site involves hazardous waste operations; the plan must be reviewed and updated as site conditions change.

Core plan elements: site characterization, employee training, medical surveillance, PPE program, air monitoring, site control, decontamination, emergency response, and spill containment.

The site safety and health supervisor (or officer) implements the plan, has authority to stop work, and reports to the site safety and health manager.

A general supervisor is responsible for overall site operations; a site safety officer may be assigned to each work crew or shift.

A safety and health program must include a hierarchy of controls: engineering controls first, then administrative/work practices, then PPE as the last line of defense.

The organizational chart must show clear lines of authority, including who can halt operations when an imminent danger exists.

An emergency response plan must identify evacuation routes, alarms, assembly points, and off-site medical facilities before work begins.

A hazard communication program must include a written inventory, SDS access, container labeling, and employee information and training.

Site characterization precedes entry and drives selection of PPE, monitoring strategy, and decontamination procedures.

The preliminary site evaluation uses records review, site reconnaissance, and interviews to identify likely contaminants and hazards.

A hazard assessment must consider chemical, physical (noise, heat, traffic), biological, and safety hazards, not chemicals alone.

Sampling plans should specify analytes, methods, detection limits, sample locations, and quality control (blanks, duplicates, spikes).

Real-time instruments (PID, FID, colorimetric tubes) screen for volatile organics; laboratory analysis confirms and quantifies.

Detection limits of field instruments must be below the action levels or exposure limits being evaluated.

Air monitoring results must be recorded and compared against established action levels to trigger PPE upgrades or work stoppage.

Waste characterization is required before disposal to determine hazardous waste codes and treatment/disposal options.

The site control program establishes work zones: the exclusion zone (hot zone), contamination reduction zone (warm zone), and support zone (cold zone).

The exclusion zone is the area where contamination or hazardous conditions exist; only authorized, trained personnel in appropriate PPE may enter.

The contamination reduction zone contains decontamination stations and is the transition between hot and cold zones.

The support zone is the uncontaminated area for command, staging, and administrative functions; PPE is normally not required.

Access control points, barriers, and posted signs must mark zone boundaries and prevent unauthorized entry.

A site map should show work zones, decontamination stations, access routes, and location of emergency equipment.

The buddy system requires that no one enter the exclusion zone alone; a backup person and escape route must be available.

A site control log should record who enters and exits the exclusion zone and the time of entry and exit.

General site workers (40-hour): 40 hours of instruction plus a minimum of 3 days of field experience under a trained supervisor.

Occasional site workers (24-hour): 24 hours of instruction plus 1 day of field experience; workers who do not disturb contamination.

Managers and supervisors: 40-hour training plus 8 additional hours of specialized supervisor training.

Annual refresher: 8 hours of refresher training is required each year for all HAZWOPER-trained workers.

Newly assigned workers must receive site-specific training covering the site safety and health plan, hazards, PPE, and emergency procedures.

Training must be documented, including dates, hours, and topics, and records retained for the duration of employment plus required retention period.

On-site supervisors must demonstrate competence in hazard recognition, PPE use, and emergency response before supervising.

Workers must be trained on the specific chemicals and hazards present at the site, not only generic HAZWOPER content.

Level A PPE: fully encapsulating chemical-resistant suit with SCBA or supplied air, providing the highest respiratory and skin protection.

Level B PPE: chemical-resistant clothing with SCBA/supplied air; used when highest respiratory protection is needed but skin protection is less critical.

Level C PPE: chemical-resistant clothing with air-purifying respirator; requires known contaminants, adequate oxygen, and concentrations below the respirator's protection factor.

Level D PPE: standard work clothing or coveralls; provides no respiratory protection and is used only where no respiratory hazard exists.

Respirators require fit testing (qualitative or quantitative) and medical clearance before use; annual fit testing is required.

Oxygen concentration must be measured before entry; SCBA or supplied air is required in atmospheres below 19.5% oxygen.

Air monitoring must be performed before entry and continuously during work when conditions can change; results drive PPE selection.

The assigned protection factor (APF) of a respirator must be adequate for the maximum expected contaminant concentration.

Decontamination must occur before leaving the exclusion zone and again at the contamination reduction zone boundary.

Decontamination methods include dry (brushing, scraping), wet (washing with water and detergent), and chemical or solvent methods.

Decontamination water and materials must be contained and disposed of as hazardous waste; runoff must not leave the site.

Emergency response plans must address fires, explosions, spills, medical emergencies, and personnel rescue, with designated responders.

An emergency alarm must be audible and distinguishable from other signals, and workers must be trained on evacuation routes and assembly points.

Medical surveillance is required for employees exposed above exposure limits, for members of HAZWOPER teams, and for employees who wear respirators.

Baseline medical exams must be provided before assignment and periodically thereafter, at least annually for covered workers.

Medical records must be retained for the duration of employment plus 30 years and made available to the employee and their physician.

An emergency response plan must include a system for accounting for all personnel after an evacuation.

Decontamination must occur before leaving the exclusion zone and again at the contamination reduction zone boundary.

Decontamination methods include dry (brushing, scraping), wet (washing with water and detergent), and chemical or solvent methods.

Decontamination water and materials must be contained and disposed of as hazardous waste; runoff must not leave the site.

Emergency response plans must address fires, explosions, spills, medical emergencies, and personnel rescue, with designated responders.

An emergency alarm must be audible and distinguishable from other signals, and workers must be trained on evacuation routes and assembly points.

Medical surveillance is required for employees exposed above exposure limits, for members of HAZWOPER teams, and for employees who wear respirators.

Baseline medical exams must be provided before assignment and periodically thereafter, at least annually for covered workers.

Medical records must be retained for the duration of employment plus 30 years and made available to the employee and their physician.

An emergency response plan must include a system for accounting for all personnel after an evacuation.