A FUNGAL ABATEMENT PROJECT IN AN OFFICE LOCATED IN ARID SOUTHWESTERN REGION OF THE UNITED STATES
Original hosted in "MACE", contributed by Social Updater
A single-story office building located in arid southwestern United States underwent a large-scale fungal abatement due to moisture infiltration and fungal contamination in the exterior wall system. Containment areas were built up and various microbiological samplings (baseline, during abatement, and clearance) were conducted with diverse sample types: culturable and non-culturable air samples, contact plates, and swab samples. Throughout the abatement periods, outdoor airborne fungal/spore levels were 102 - 103 CFU/m3 and 103 - 104 spores/m3. Cladosporium dominated outdoor fungal flora. Elevated fungal levels (107 spores/m3 and 105 CFU/m3) were detected during abatement activities with Penicillium as the predominant fungi followed by Aspergillus. Spores of Stachybotrys chartarum were also detected during abatement from non-culturable method. Results from clearance samples showed significant mean fungal level reduction on aboveground surface samples. Airborne fungal/spore levels returned to baseline levels with Cladosporium as the predominant fungal genus.