Fungal Results Interpretation - Know The Full Story
The interpretation of fungal results is impacted by a number of factors and is typically not a straightforward process. Some professionals and laboratories provide a straight statistical review of the fungal results (comparing outdoor results to indoor results) to provide an indication of the presence of elevated levels of fungal spores. The statistical approach provides direction to areas of concern, but by no means provides the whole story for a fungal investigation. Fungal spore counts in air are impacted by a number of factors - a diurnal cycle, airflow patterns, seasonal variation, and physical disturbances. These variations can be orders of magnitude for samples collected minutes apart (e.g., 1000 spores to 100,000 spores). Unless a large number of samples covering different times of the day and a good portion of the property inside and outside are used, the statistical approach falls short. A statistically rigorous sample collection and analysis scheme is expensive and success is not guaranteed.
In order to get the complete picture, a professional must gather information to supplement sample results - information relative to the surrounding land use, surrounding rooms, connected buildings, property history (e.g., leaks, fires, and floods), HVAC system layout, and visual observation. Interviews with complaining occupants, non-complaining occupants, property managers, and maintenance personnel provide information that can be used to develop an effective sample collection scheme. Property owners should be aware that properties with fungus issues typically involve more than just replacing the drywall.
If you suspect your property has fungal or other indoor environmental issues, contact Quality Assurance Chemist Stephen T. Zeiner, CRMI, CEAC, at 610-935-5577 for assistance.
Summer 2009 Conferences
The Battelle In Situ and On-Site Bioremediation Symposium was held May 5-8, 2009, in Baltimore, Maryland. Principal Geoscientist Gerry Kirkpatrick, P.G., presented “In-Situ Bioremediation of Chlorinated Solvents in Fractured Triassic Bedrock of Southeastern Pennsylvania.”
The annual TCEQ Environmental Trade Fair and Conference was held in Austin, Texas, May 12-14, 2009. Technical Director of Chemistry/Principal Rock J. Vitale, CEAC, CPC, presented “Nonylphenols - A New Group of Compounds of Concern” and Quality Assurance Specialist/Principal Ruth L. Forman, CEAC, presented “The Art of Reading a Lab Report - Can You Pass the Test?”
The Florida Society of Environmental Analysts (FSEA) Spring Meeting and Technical Session was held in St. Petersburg Beach, Florida, May 20-22, 2009. Rock J. Vitale, CEAC, CPC, presented “The Do’s and Don’ts Regarding MDL Verification Studies.”
The 2009 Northeast Sustainable Communities Workshop was held June 18, 2009, in Newark, New Jersey. Gerry Kirkpatrick, P.G., was a panelist for the session “Sustainable Approaches to Assessment and Remediation at Brownfields Sites.”
The 15th Annual Good Laboratory Practice (GLP) Reception & Conference, sponsored by the VA AWWA / VWEA Laboratory Practice Committee, will be held August 3-4, 2009, in Charlottesville, Virginia. Senior Quality Assurance Chemist Pat Conlon will present “How to Prepare Your Laboratory for an Internal and ‘Official’ Audit and Document Control.” Mr. Conlon will also present “The NELAC Institute Efforts to Assist Laboratories” on behalf of The NELAC Institute.
The 2009 National Environmental Monitoring Conference (NEMC) will be held August 10-14, 2009, in San Antonio, Texas. Ruth L. Forman, CEAC, will present “The Impact of New US EPA Methods - A Case Study of Contortions and Permutations - US EPA Method 5035.” Pat Conlon will present two papers: “1,4-Dioxane Micro-Aqueous Extraction with GCMS SIM” and “Discussion of the Limitations of Citeable References for Commonly Accepted Performance Standards for Technical Measurements and for Ethical Practices.”
If you would like a copy of any of these presentations, please contact Marketing Coordinator Abby Wilson at awilson@envstd.com.
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