call us (800) 656-4604
Serving NORTHERN VIRGINIA,
MARYLAND, D.C. Metro area
They finished the job and had the job site cleaned up in less than a day. My wife and I were amazed!
Sampling / Testing
In general the EPA does not recommend sampling unless an occupant of the space is symptomatic. When sampling is necessary, a trained professional who has specific experience in designing mold-sampling protocols, sampling methods, and the interpretation of findings should perform it. Sampling should only be conducted to answer a pertinent question: examples "what is the spore concentration in the air"," or is a particular species of fungi present in the building." The additional question should be asked before sampling "what action can or should a person take upon obtaining data."
The sampling and analysis should follow the recommendations of Occupational Safety and Health Administration (OSHA), National Institute for Occupational Safety and Health (NIOSH), Environmental Protection Agency (EPA), and the American Industrial Hygiene Association (AIHA). Most importantly, when a sample is taken the proper chain of custody should be adhered to. The AIHA offers lists of accredited laboratories that submit to required quarterly proficiency testing.
Three types of air sampling include but are not limited to:
Air sampling: the most common form of sampling to assess the level of mold. Sampling of the inside and outdoor air is conducted and the results to the level of mold spores inside the premises and outside are compared. Often, air sampling will provide positive identification of the existence of non-visible mold.
Surface samples: sampling the amount of mold spores deposited on indoor surfaces (swab, tape, and dust samples)
Bulk samples: the removal of materials from the contaminated area to identify and determine the concentration of mold in the sample.
When sampling is conducted, all three types are recommended by the AIHA, as each sample method alone has specific limitations. For example, air samples will not provide proof a hidden source of mold. Nor would a swab sample provide the level of contamination in the air.
Though it may not be recommended, air sampling following mold remediation is usually the best way to ascertain efficacy of remediation, when conduct by a qualified third party.
Be Sure, Be Safe, Call Apex Today! (800) 656-4604
For a Foundation Inspection
Click Here
Is Your Basement the favorite gathering place for the neighborhood gang?
Check our Basement Waterproofing Reviews on Angie's List |