Greg Kleinheinz, Seasonal Impacts on Indoor Fungal Concentrations After Mold Remediation(2017)SDRP Journal of Earth Sciences & Environmental Studies 2(1)
Fungal contamination of the indoor air environment is a concern for building owners, residents, landlords, realators, and environmental health professionals. These health effects can vary greatly from person-to-person. These potential health effects are not just related to the concentration of fungi, but also the type of fungi present. There are a number of methods for enumerating indoor fungi, but the use of non-viable Air-O-Cell cassettes has become a common, standardized, and well established method for air sampling during or after mold remediation. The overarching objective of this study was to evaluate the impact of time of year on Air-O-Cell fungal testing results after professional remediation. This project relied on data from 138 sampling events that occurred over the course of several years. The data collected in outdoor samples during the summer months revealed much higher concentrations of fungi when compared to indoor air samples. However, in winter months the outdoor samples were found to have very low concentrations of fungi relative to indoor samples. The mean concentration of fungi in each sample location varied greatly with respect to season of the year. Thus, absolute concentrations of fungi should only be one piece of information used to assess a succesful remediation. Additional information to be considered includes a visual inspection of the remediated site, the season, the relationship of fungal type between sample locations, and the proportion of various fungal types in each sample.