Indoor Air Quality Assessment – Walk Through Inspection


A thorough walk through inspection of each floor is conducted to investigate and determine potential sources of Indoor Air Quality contamination. The mechanical room air handling systems are visually inspected for microbiological contamination on the cooling and heating coils, drip pans and other system components. The maintenance records also are reviewed for each facility. Experienced field technicians qualitatively review the delivery capacities of the air handling systems to determine if air flow appears sufficient for the size and type building under investigation. [Read more…]

Indoor Air Quality Assessment – Technical Approach

Indoor air quality has become a major issue due to recent conservation efforts to reduce the cost of heating and cooling buildings, increased reliance on mechanical ventilation equipment, and growing awareness that air quality problems can impact the health, comfort, and productivity of building occupants. Since 1974, in the wake of the first oil embargo, the need to reduce building maintenance and operation costs has been a priority of building managers. To reduce these costs, new buildings have been constructed as hermetically sealed structures. Additionally, older buildings have been sealed by the addition of energy-efficient window and door closures. As a result, fresh air ventilation is provided primarily by way of mechanical air-handling equipment. [Read more…]

Asbestos Information and Awareness

Asbestos is a ubiquitous mineral product that has been widely used for more than one hundred years. It has been used in numerous building products, including thermal insulation (pipes, boilers, water tanks), fireproofing, acoustical plasters, and an enormous number of miscellaneous products, including floor tiles, ceiling tiles, textiles such as gloves and blankets, vehicle brake and clutch linings, and various roofing and siding materials. It wide use was due to its superior insulating characteristics, fire resistance, chemical resistance, tensile strength, and abundance. [Read more…]

Asbestos Hazard Recognition

While asbestos products were widely used in building construction since the early 1900’s, the recognition of health hazard evolved slowly. The occupational hazard of asbestos was identified in the 1930’s in Great Britain and was recognized in the medical literature in the United States by World War II. The occupational disease asbestosis was the first asbestos disease recognized in the medical literature and was cited in the Worker’s Compensation laws in many states in the US. It took much longer to recognize the cancer mesothelioma, since it tends to have a long latency period. As stated in the National Cancer Institute paper, “Also, very high exposures, which were likely to have occurred in the 1930’s and 1940’s, may have resulted in lung cancer or asbestosis before mesothelioma could develop.” [Read more…]

Should I Spray Bleach on my Mold Growth?

The presence of active mold growth inside an occupied building requires remediation measures to remove the growth. Existing industry standards published by the Environmental Protection Agency (EPA), American Industrial Association (AIHA), Institute of Inspection, Cleaning and Restoration Certification (IICRC), American Conference of Industrial Hygiene (ACGIH) and others all emphasize  the need to remove the mold growth. This is defined as the demolition and removal of affected porous materials such as carpet, drywall and insulation, and the thorough cleaning of non-porous materials such as wood, metal, vinyl and hard plastic. [Read more…]