Per- and polyfluoroalkyl substances (PFAS) are a group of chemicals that have been manufactured and used in the United States since the 1940s. PFAS are commonly found in both household and industrial products such as non-stick coatings, stain and water repellent fabrics, and cleaning chemicals. Ground water contamination with PFAS has been associated with fire-fighting foams, manufacturing sites, landfills, and other industrial operations. Because of their chemical structure, PFAS are highly persistent in both the environment and human body. Studies have indicated that some PFAS compounds may be associated with adverse health effects, including:
Concrete has been in existence for over 2,000 years and it is not only the most used manufactured material in the world, but also is one of the oldest. Concrete is critical to our societies infrastructure as it is found in our schools, hospitals, city buildings, apartments, and more.
Mediation vs. Arbitration. What’s the difference? Mediation and Arbitration are often and easily confused, especially if you are not in the field of law. The simplest way to differentiate is:
Increased emphasis on green building design has resulted in a greater demand for more energy efficient building materials such as spray polyurethane foam (SPF) insulations. Despite their excellent air sealing capability and insulating properties, the U.S. Environmental Protection Agency has recognized that exposure to the isocyanates and other vapors, aerosols, and dusts created during and after installation, may cause respiratory sensitization, asthma, and odors.
Legionella is a type of Gram-negative bacteria that occurs naturally in freshwater environments. Although it is present in nature, Legionella becomes a substantial health concern when allowed to multiply in a building’s water systems. According to the U.S. Center for Disease Control (CDC), from 2000 through 2015, there were 49,930 confirmed Legionnaires’ cases in the United States. Legionnaires’ disease is a severe type of pneumonia that can rapidly become fatal. It is caused by breathing in aerosolized water droplets containing Legionella, with the majority of recognized Legionnaires’ disease cases occurring in hotels, resorts, cruise ships, and the healthcare setting.
The use of masonry cavity walls dates back over a hundred years and is still thriving today. However, the use of masonry in cavity walls has evolved to meet the performance needs and building specifications of 21st century buildings.
CCA is excited to introduce Dr. Michael Mellette, Senior Scientist Occupational and Environmental Health. Mike has 15-plus years of experience in occupational safety and environmental compliance, industrial hygiene, exposure, and risk assessment. As an experienced former U.S. Army helicopter pilot with extensive education and experience in environmental, chemical exposures, industrial safety, Michael is a perfect fit for CCA’s disciplined, team-oriented approach. Michael will be responsible for leading cross-functional teams in investigations related to occupational and environmental health issues as well as safety investigations including accidents.
Michael's background includes:
The process of inspecting the façade or roof of a building is changing. Advances in programming and battery technology have made unmanned aerial vehicles or “drones” both viable and affordable. Engineering and architectural companies are incorporating these tools into the practice of inspecting the façade and roof of structures, surveying large landscapes, and monitoring construction progress. The drone can be used as a tool, in the aforementioned tasks, that can safely produce visual and or thermal data faster at less cost than using tradition means and methods.
The devil is in the details. One year following the completion of a building in the Mid-Western United States, the tile on the exterior had begun to loosen and fall. The tile was selected for commercial-outdoor use, and could withstand freeze-thaw, thermal-shock conditions, and were frost resistant. If the above was true, then what was causing the failure?