(a) Scope. These general work practices are minimum requirements and do not constitute complete or sufficient specifications for a mold remediation project. More detailed requirements developed by an assessment consultant for a particular project shall take precedence over the provisions of this section.
(b) Remediation work plan. A remediation contractor shall prepare a mold remediation work plan that is specific to each project, fulfills all the requirements of the mold remediation protocol, and provides specific instructions and/or standard operating procedures for how a mold remediation project will be performed.
(c) On-site records. A licensed mold remediation company and a licensed mold remediation contractor who is not employed by a company shall maintain the following records and documents on-site at the location of the mold-related activities at a project for its duration:
  (1) a current copy of the mold remediation work plan and all mold remediation protocols used in the preparation of the work plan; and
  (2) a listing of the names and license or registration numbers of all individuals working on the remediation project.
(d) Personal protective equipment (PPE) requirements. If an assessment consultant specifies in the mold remediation protocol that PPE is required for the project, the remediation contractor or company shall provide the specified PPE to all individuals who engage in remediation activities and who will, or are anticipated to, disturb or remove mold contamination, when the mold affects a total surface area for the project of 25 contiguous square feet or more. The recommended minimum PPE is an N-95 respirator.
  (1) Each individual who is provided PPE must receive training on the appropriate use and care of the provided PPE.
  (2) The remediation contractor or company must document successful completion of the training before the individual performs regulated activities.
(e) Containment requirements. The containment specified in the remediation protocol must be used on a mold remediation project when the mold affects a total surface area of 25 contiguous square feet or more for the project.
  (1) Containment is not required if only persons who are licensed or registered under this chapter occupy the building in which the remediation takes place at any time between the start-date and stop-date for the project as specified on the notification required under §78.110.
  (2) The containment, when constructed as described in the remediation work plan and under normal conditions of use, must prevent the spread of mold to areas outside the containment.
  (3) If walk-in containment is used, supply and return air vents must be blocked and air pressure within the walk-in containment must be lower than the pressure in building areas adjacent to the containment.
    (A) Operation of equipment to recirculate air inside of containment without maintaining negative air pressure may be conducted when the specific conditions, phases, and time periods during which it may or must occur are specified in the mold remediation protocol before commencing this use of equipment.
    (B) Operation of equipment to recirculate air inside of containment without maintaining negative air pressure is prohibited during periods of active mold remediation activity.
  (4) The mold remediation contractor shall ensure that the containment is maintained in accordance with the work plan and the requirements of this chapter until the containment is removed.
(f) Notice signs. Signs advising that a mold remediation project is in progress shall be displayed at all accessible entrances to remediation areas.
  (1) Notice signs shall be at least eight (8) inches by ten (10) inches in size and shall bear the words "NOTICE: Mold remediation project in progress" in black on a yellow background. The text of the signs must be legible from a distance of ten (10) feet.
  (2) Notice signs must be displayed continuously during the period in which active mold
remediation is ongoing.
(g) Removal of containment. No person shall remove or dismantle any walk-in containment structures or materials from a project site before receipt by the licensed mold remediation contractor or remediation company overseeing the project of a written notice from a licensed mold assessment consultant that the project has achieved clearance as described under §78.140.
(h) Disinfectants, biocides, and antimicrobial coatings.
  (1) A disinfectant, biocide, or antimicrobial coating may be used only if:
    (A) its use is specified in a mold remediation protocol;
    (B) it is registered by the United States Environmental Protection Agency (EPA) for the intended use; and
    (C) the use is consistent with the manufacturer's labeling instructions.
  (2) If a protocol specifies the use of a disinfectant, biocide, or antimicrobial coating but does not specify the brand or type of product, a remediation contractor may select the brand or type of product to be used, subject to the other provisions of this subsection. A decision by an assessment consultant or remediation contractor to use such a product must take into account the potential for occupant sensitivities and possible adverse reactions to chemicals that have the potential to be off-gassed from surfaces coated with the product.
  (3) A person who applies a biocide to wood to control a wood-infesting organism must be licensed by the Structural Pest Control Service of the Texas Department of Agriculture as provided under the Texas Occupations Code, Chapter 1951 (relating to Structural Pest Control) unless exempt under the Texas Occupations Code, Chapter 1951, Subchapter B (relating to Exemptions).

Source Note: The provisions of this §78.120 adopted to be effective November 1, 2017, 42 TexReg 4619; amended to be effective September 1, 2018, 43 TexReg 5207