Evaluating the success of microbiological remediation
Recently we travelled to London where we revisited a site where we had previously carried out a property sanitation verification. Since our last visit, the recommended remediation measures have been carried out. Our client invited us back and instructed us to evaluate the success of the microbiological remediation measures and to ensure that the air quality within the property has returned to it’s pre-incident condition.
The property we attended was a flat located on the 9th floor of a larger residential building. The flat consists of an open plan kitchen/lounge area, three bedrooms and two toilet/bathrooms. The property had been sanitised by a team of operatives prior to this visit, who removed all dust and debris from the affected rooms by the means of HEPA vacuuming and wiping. Sanitising and barrier solutions were applied to the affected areas in order to remove all traces of fungal growth from within the flat. All remediation work was carried out under continuous air management with air replacement and filtration. Following cleaning, each room was treated with ozone in order to remove any volatile contaminants.
How to evaluate the success of remediation measures
In order to evaluate the success of the microbiological remediation measures, our surveyor had to carry out a visual inspection and air sampling. When visually inspecting the property our surveyor did not find any evidence of visible fungal contamination. There was also no evidence of any active water leaks and all the construction materials in the property were dry.
Air monitoring revealed that the concentration of fungal spores in the flat were similar to the existing environmental background samples. This means that the indoor air quality in the flat can be described as good. Therefore we can conclude that the microbiological remediation measures carried out prior to this recent visit, were successful.