How can you ensure air quality standards are met during construction and demolition activities?

2 Regulatory requirements

Depending on the location and scale of the project, construction and demolition activities may be subject to various local, state, or federal regulations that set limits or standards for air quality and emissions. For example, in the United States, the Clean Air Act requires that construction and demolition projects obtain permits from the Environmental Protection Agency (EPA) or state agencies, and comply with the National Ambient Air Quality Standards (NAAQS) and the National Emission Standards for Hazardous Air Pollutants (NESHAP). Additionally, some states or cities may have more stringent or specific rules for dust control, asbestos abatement, or VOC reduction.

3 Dust control methods

One of the most effective ways to control dust emissions from construction and demolition activities is to use water sprays or misting systems that wet the materials or surfaces and prevent dust from becoming airborne. Other methods include covering or enclosing the materials or equipment, using filters or barriers to capture dust, or using vacuum systems to collect dust. Furthermore, it is important to minimize the disturbance of the soil or vegetation, and to use erosion control measures such as mulching, seeding, or matting to stabilize the ground. Finally, it is advisable to monitor the wind speed and direction, and to adjust the activities or methods accordingly.

4 Asbestos abatement techniques

Asbestos abatement is the process of removing or containing asbestos-containing materials (ACM) from buildings or structures that are being demolished or renovated. Asbestos abatement requires special training, equipment, and procedures to ensure the safety of workers and the environment. Some of the techniques used for asbestos abatement include wetting the ACM to reduce dust, using negative air pressure and HEPA filters to prevent asbestos fibers from escaping, wearing protective clothing and respirators to avoid exposure, and sealing or wrapping the ACM in plastic bags or containers for proper disposal. Additionally, it is essential to follow the notification and reporting requirements of the EPA or state agencies, and to conduct air sampling and testing to verify the effectiveness of the abatement.

5 VOC reduction strategies

VOC reduction strategies aim to lower the amount of VOCs that are emitted or used by construction and demolition activities. Some of the strategies include selecting low-VOC or VOC-free paints, solvents, adhesives, or fuels, or using alternative materials or methods that do not require VOCs. For example, using water-based or latex paints instead of oil-based paints, or using mechanical fasteners instead of adhesives. Another strategy is to implement good ventilation and housekeeping practices, such as opening windows or doors, using fans or exhaust systems, or storing and disposing of VOC-containing materials properly. Moreover, it is important to educate and train workers on the hazards and precautions of VOCs, and to provide them with appropriate personal protective equipment.

7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?