Mold Remediation Specialist flashcards

33 cards. Read the term and the definition here. The deck at the top of this page is optional.

Condition 3

The category describing actual mold growth or amplification on building materials or contents. It signals an active moisture problem and drives containment, removal, and source correction decisions.

Condition 2

Settled spores or mold fragments present on surfaces where growth is not expected, indicating an indoor source has released spores. Requires cleaning and investigation of the source.

Condition 1

Normal fungal ecology: background settled spores in amounts typical of the outdoor environment, with no evidence of amplification. Generally no remediation beyond routine cleaning is needed.

Level I remediation

Remediation of 10 square feet or less of mold growth on surfaces. It is the smallest project size category and still requires source correction and appropriate PPE.

Level II remediation

Remediation covering more than 10 and up to 100 square feet of affected area. Typically requires containment of the work area and HEPA filtration under negative pressure.

Level III remediation

Remediation of more than 100 square feet of mold growth. Larger projects usually need a written remediation plan prepared by a qualified professional and full containment.

Level IV remediation

Remediation involving HVAC systems or their components, such as ductwork and air handlers. Requires specialized containment and cleaning procedures beyond standard surface remediation.

Critical barrier

A sealed polyethylene barrier that isolates the work area from occupied space, typically 6-mil plastic with taped seams and a zippered or flap door for entry.

Negative pressure

A pressure differential in which the contained work area is held at lower pressure than surrounding rooms, so air flows into containment and contaminants do not escape.

HEPA air scrubber

A portable filtration unit with high-efficiency particulate air filters used to filter airborne spores in containment. Sizing commonly targets four to six air changes per hour.

HEPA vacuuming

Cleaning with equipment that traps particles at 99.97 percent efficiency for 0.3 micron particles. It removes settled spores without aerosolizing them back into the air.

Porous material removal

The rule that materials such as drywall paper, carpet, pad, insulation, and ceiling tile with active growth are removed rather than cleaned, because growth penetrates the material.

Damp wiping

Cleaning non-porous and semi-porous surfaces with a damp cloth and detergent solution to remove spores and residue, followed by drying.

Biocide limitation

Disinfectants kill organisms but do not remove allergens or spores from surfaces. They are not required for mold cleanup and never replace moisture source correction.

Moisture source correction

Identifying and fixing the water intrusion, leak, condensation, or humidity cause before or during remediation. Without it, mold regrows after cleanup.

Psychrometric monitoring

Tracking temperature, relative humidity, and dew point during remediation and drying. It verifies drying progress and helps prevent secondary condensation in contained areas.

Post-remediation verification

The final inspection after cleaning and drying, combining visual review, moisture readings, and when specified air sampling compared with an outdoor control.

Air sampling limitation

Air sampling alone cannot confirm a building is mold-free; results are interpreted against outdoor controls and combined with visual inspection and moisture data.

P100 respirator cartridge

A particulate filter rated for oil and non-oil aerosols at high efficiency. Commonly used with half-face or full-face respirators during mold remediation work.

Respirator fit testing

A required annual test confirming a respirator seals to the wearer's face. Medical evaluation and training are prerequisites under OSHA respiratory protection requirements.

Disposable coveralls

Protective clothing worn during remediation to prevent spores from contaminating street clothes and being carried outside the work area. Removed before leaving containment.

Waste bagging

Placing removed moldy materials in sealed heavy-duty bags or wrapped bundles before transport through clean areas, so contaminants are not spread.

Air changes per hour

The number of times the total contained air volume is replaced or filtered per hour. Used to size HEPA air scrubbers for containment.

Moisture meter

A device used to detect elevated moisture in building materials and to verify that materials have dried to acceptable levels before clearance.

Relative humidity control

Keeping indoor relative humidity below roughly 60 percent to limit mold growth. Dehumidification is used during remediation to speed structural drying.

Hidden mold

Growth inside wall cavities, above ceilings, or under flooring that visual inspection misses. Suspected hidden growth justifies exploratory opening and cavity assessment.

Remediation plan

A written document describing the scope, containment, PPE, cleaning methods, clearance criteria, and schedule for a project, typically required for larger remediation levels.

Indoor vs outdoor comparison

Interpreting indoor air samples by comparing them with outdoor control samples taken the same day, since background spores vary with weather and season.

Spore trap sampling

A method that collects airborne particles on a slide for microscopic count and identification. Gives a snapshot of airborne spores at the sampling moment.

HVAC contamination

Mold growth within ducts, coils, or air handlers, which can distribute spores throughout a building. Requires Level IV procedures and system cleaning.

Personal protective equipment

The barrier between worker and contaminants: respirator, eye protection, gloves, and coveralls. Selection scales with the remediation level and task.

Donning and doffing

The sequence of putting on and removing PPE. Removal is done carefully at the containment exit so spores are not transferred to clean areas or clothing.

Clearance criteria

Predefined conditions that must be met before containment is removed, such as no visible mold, dry materials, and acceptable sampling compared with outdoor controls.