EXPERIENCE

Sample Project Descriptions - Indoor Air Quality

In response to complaints from tenants of a large office complex, GSE conducted an indoor air quality investigation, which included an initial site visit to collect background information, followed by a detailed building and HVAC inspection. During the inspection, several sources of hazardous air contaminants were found and subsequently quantified by air sampling. The results were presented in a report, which was used by the landlord to make changes; improving indoor air quality and stopping the complaints.

On behalf of an environmental remediation company, GSE conducted clearance testing for metallic mercury at a historically contaminated building that had undergone extensive remediation. A modified testing methodology was developed that was scientifically valid, met the stringent residential contact risk criteria established by the USEPA and NJDEPE. Sampling results provided the information necessary to effectively finalize the remedial cleanup effort.

A large regional bank received health and odor complaints from about five (5) employees who work in a wing of a large office complex. The complaints appeared to be related to the HVAC system, but building management was not sure. GSE conducted an initial site visit and developed a detailed air-sampling program for common pollutants, including temperature and relative humidity, carbon monoxide, carbon dioxide, VOC’s and respirable dust. The findings revealed that the office was not receiving enough fresh air and that the duct work needed to be cleaned and disinfected. The intervention was successful and employees "breathed a sigh of relief".

A Condominium Association contracted to have the original wood siding, which failed, to be replaced with a proprietary clapboard type-sheathing product. Several owners complained at association meetings and distributed letters warning that exposure to the dust from cutting this material was hazardous and that it was likely to cause health problems. GSE was retained by the Association to evaluate the toxicity of the material and to conduct sampling to determine if there were significant exposures. The results did not suggest exposure however, GSE guided the contractor in implementing preventative controls, such as installing dust control equipment and using non-dust producing tools, such as shears. The final report documented these findings and recommendations and the Association did not receive any further complaints.

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