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Less Than 10 Square Feet of Mold (Rule?) Part 2

Jason Yost • Dec 05, 2022

Less Than 10 Square Feet of Mold (Rule?) Part 2

When I first moved to Florida, I heard many mold assessors and mold remediators state that “if there’s less than (<) 10 continuous square feet of mold growth you don’t need a mold assessment”. Other mold assessors and mold remediators went so far as to say Personal Protective Equipment (PPE) and engineering controls (e.g., air filtration devices and containment barriers) aren’t necessary if there’s <10 square feet of continuous mold growth. Are these claims true? And what does the answer to that question mean to you? In my first blog we looked at the Florida Mold-Related Services Licensing Law (hereafter referred to as The Law) and answered the first claim, concerning the need for mold assessments. In this blog, let’s look at the second claim, concerning the use of PPE and engineering controls. 

water damage and mold in kitchen sink

Note: I’m not one to speak out of line, so I spent a lot of time with experts with the Florida Department of Business and Professional Regulation (DBPR), environmental and occupational safety and health lawyers for the State of Florida and the Occupational Safety and Health Administration (OSHA), as well as some past presidents of the Indoor Air Quality Association (IAQA). While I have years of experience working on mold-related legal claims, I didn’t want to overlook something that collaboration with these experts would provide in my analysis of The Law. The result of that collaboration has confirmed my own analysis of The Law and highlighted something everyone in Florida should know – for the protection of their health and well-being, the justification of mold-related expenses, the protection from conflict-of-interest practices, and the protection from predators coming into Florida to profit from natural disasters. 

The Law:

The first thing one needs to understand is what The Law is and isn’t. It isn’t a procedural standard (i.e., it doesn’t provide principles or procedures for mold remediation or assessment), like the Institute of Inspection, Cleaning, and Restoration Certification (IICRC) S520 Standard for Professional Mold Remediation. It is a law that establishes the following: 

  1. Circumstances whereby a license is required to perform a mold assessment or mold remediation;
  2. The criteria and process to license someone as a mold assessor or mold remediator;
  3. Processes for departmental review and revocation of one’s mold assessor or mold remediator license; and,
  4. Places the responsibility for daily execution of The Law to the DBPR’s construction division. 

Nowhere in The Law does it state anything about PPE, air filtration devices, containment barriers, or other engineering controls. 

The Question of PPE & Engineering Controls: 

mold remediation and OSHA

The question of whether engineering controls or PPE is necessary on mold remediation projects is one that the federal occupational safety and health laws are deeply concerned about. While it’s true that OSHA hasn’t written a specific standard for mold remediation, they do seek to enforce worker protection on these projects. How do they do that without specific standards? As part of the Occupational Safety and Health Act (hereinafter referred to as The Act), Congress included “an enforcement tool of last resort” (Reich v. Arcadian Corp.), commonly referred to as “General Duty Clause”, that places nonspecific, board safety requirements on employers when more specific standards and regulations are not applicable. The courts and the Occupational Safety and Health Review Commission (Review Commission) have precisely laid out the Secretary of Labor's burden of proof under the General Duty Clause in many cases like the following (taken from the Active Oil Service, Inc., 21 OSH cas.): 

(1) A workplace condition presented a hazard, (2) the employer or its industry recognized the hazard, (3) the hazard was likely to cause serious physical harm, and (4) there was a feasible and useful means of abatement that would eliminate or materially reduce the hazard. 

The threshold inquiry in evaluating whether a General Duty Clause obligation exists is whether there is a hazard. A hazard “is not defined in terms of the absence of a particular abatement method.” Rather, it is defined “in terms of the physical agents that could injure employees.” (Chevron Oil Co., 11 OSH Cas.) The employer doesn’t have to know the hazard or hazardous conduct exists, either. The courts and Review Commission have established that the industry in which the employer engages only needs recognize the known, potential, or suspect hazard. Many term this “industry-based knowledge”. 

So, what does all of this mean in terms of engineering controls and PPE on mold remediation projects? 

mold remediation containment

OSHA, the Review Commission, and the courts will look to industry-based knowledge for guidance on whether engineering controls and PPE are necessary and would’ve prevented the injury or illness to the worker(s) by eliminating or reducing the hazard. In the mold remediation industry this knowledge is contained within the industry’s standard of care: the Institute of Inspection, Cleaning, and Restoration Certification S520, Standard for Professional Mold Remediation. The S520 acknowledges OSHA’s hierarchy of controls by language that speaks to the importance of engineering controls. Let’s look at some of the language I’m referring to: 

Remediators should prevent cross-contamination and shall use engineering controls to help ensure worker safety and health during structural mold remediation projects. When performed in accordance with generally accepted industrial hygiene principles and standards, engineering controls eliminate or reduce the hazard.

Do you see the key terms used in this standard that ties into what we’ve discussed in occupational safety and health law? The hazard, as defined by the standard, is mold (thus its name), and its states that “engineering controls eliminate or reduce the hazard” something we’ve seen the courts and Review Commission seeks to enforce through the General Duty Clause. 

The S520 goes on, from there, to discuss air filtration devices, containment barriers, PPE, and other forms of administrative, engineering, and PPE controls. 

Why the State of Florida Excluded PPE & Engineering Controls in The Law:

I can only speculate on the reasons why. My inclination is to believe that it has to do with federal laws that restrict a state’s right to establish its own safety and health laws. For example, under 29 USC 667, federal law has established States’ jurisdiction and procedures for establishing and maintaining its own plans. The requirements provide legislatures the challenge of meeting the on-going supervision and critique of OSHA while attempting to meet local political demands. Another possibility is that there weren’t the time or professional body to establish a state-specific replacement for the General Duty Clause and S520. Whatever the reason, the language isn’t there. So, when someone tells you that the extent of continuously visible mold growth indicates no engineering controls or PPE are necessary, seek out a competent indoor environmental consultant (e.g., Gulf Coast Center for Indoor Air Quality Services) to provide a site-specific mold assessment and protocol (i.e., corrective action plan for mold remediation) and consultation for everyone’s safety and health. To learn more about how we can serve you, contact us here

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