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Environmentally Friendly Mold Remediation Techniques That Significantly Reduce Childhood Asthmaalso related building areas and systems (including elements of thebuilding envelope and AC system). Make an inventory of all visiblymoldy surfaces and materials that are water damaged. Seek assistancefrom a professional with experience in assessing buildings for moldand moisture problems if further investigation is needed.In many cases the exact source of the moisture cannot be pinpointeduntil remediation starts and the wall or ceiling area is opened. Thenthe pattern and location of the mold growth can quickly point tothe source of the problem.Extent of Mold GrowthBecause there is a large number of consultants in the mold moldindustry whose job is to test, they always recommend testing.According to the EPA the use of testing (mold sampling) in an initialinvestigation is rarely needed.Remember that mold sampling has absolutely no relevance tohow the remediation work should be done.The only valid way to determine how the remediation work is to bedone (type of protection needed) is, according to the EPA, tophysically measure the extent of the mold in square feet, and thenclassify the mold growth into Minimal, Moderate and Major contaminations.Once the contamination is categorized, an appropriate remediationactivity can be assigned to it. These remediation activities relate toworker protection and how the environment is protected. The largerthe problem, the more care needs to be taken to protect the workersand occupants and environment.Generally such classification can be performed without sampling.However there are times when sampling is required such as to findhidden mold or for legal or medical reasons. Note that in Canada initialmold sampling is NOT done. Resources are focused on mold removaland sampling is done after the removal work to make sure that there hasbeen no cross contamination as a result of the remediation work.54
Environmentally Friendly Mold Remediation Techniques That Significantly Reduce Childhood Asthma7. Determining the Remediation ScopeAfter gaining a reasonable understanding about the physical extent ofmold contamination measured in square feet, and the source(s) ofexcess moisture, determine the scope of remediation best suited to theproblem. This document recommends a graded approach based onthe criteria below and the particular characteristics of the problem.Consider site- and situation-specific details regarding thecontamination severity and the nature of the underlying moistureproblem, including potential health and safety concerns related toremediation activities and the availability of resources to correct theproblems.Three categories – "Minimal," "Moderate," and "Major" – arerecommended by the EPA for characterizing the complexity of thecontamination problem and the potential for exposure of buildingoccupants and remediation workers. These industry-standardcategories are based on quantifiable and non-quantifiable factors; theyare not intended to be applied strictly, but to describe and rank thehazards and remediation factors in a relative sense. This deliberatesubjectivity underscores the need to develop remediation practicesand procedures that are site- and situation-specific, yet can be adaptedas new information arises during the remediation.It is crucial to remember that the extent of hidden mold growthmay be much greater than what is readily visible from withinoccupied spaces if the moisture problem originated in or hasimpacted closed spaces or cavities. In such cases, invasive techniquesmust be used to access and inspect inside surfaces of floor, wall, airhandler, AC supply and return air plenums, and ceiling cavities.Whenever there is information suggesting that additionalcontamination may be uncovered during remediation orinvestigation, increased contaminant control and a higher level ofpersonal protective measures should be used. Plans should be flexibleto allow for any necessary revision of the project’s scope, such asadjusting work practices and procedures if unforeseen contaminationor other complications are encountered.55
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Certified Mold Free Construction288
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White’s Second LawThe majority of
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Too Toxic to Use? Cont’d Some tim
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Green or Non-ToxicMany ‘Green’
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Cleaning Processes Washing can get
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RinsingRinsing is just as important
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Bleaching for EffectIf the surfaces
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Sealing of Cavities Sealing should
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Warrantees on Cleaning Warrantees o
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Ventilation & Humidity ControlAlmos
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