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Vapor intrusion in progress in commercial building

Vapor Intrusion Solutions

Protect your commercial property with our comprehensive vapor intrusion services. Our solutions include:

  • Certified and experienced technicians
  • State-of-the-art diagnostic tools
  • Tailored system design and implementation
  • In-depth site evaluations
  • Compliance with safety and health standards
  • Ongoing support maintenance
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Advanced Vapor Intrusion Techniques


Employ our specialized vapor intrusion solutions to safeguard your building. Our offerings include:

  • Comprehensive site evaluations
  • Installation of vapor barriers
  • Consultation for system design
  • Effective crack and intrusion sealing
  • Regular monitoring and maintenance 
  • Collaboration with construction designers
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Vapor Intrusion in a Commercial Building

Our 3-Step Process

Discover how easy it is to achieve a safer environment with our streamlined vapor intrusion process.

1
Site Evaluation

Our experts perform a detailed assessment to identify areas of concern.

2
System
Design

We create a custom solution that addresses your unique building needs.

3
Install & Monitoring

Our team installs the system and provides ongoing monitoring for effectiveness.

Vapor Intrusion FAQs

Here are our most frequent questions, but feel free to reach out if you have any other questions.

Vapor intrusion occurs when underground chemicals migrate from contaminated soil or groundwater into the indoor air of buildings. These chemicals often come from volatile organic compounds (VOCs) or radon gas present in the soil. As they seep upwards, they can enter buildings through cracks and holes in the foundation. This process is of significant concern as it can lead to indoor air pollution, which might pose health risks to inhabitants. Some common sources of vapor intrusion include past industrial activities, underground storage tanks, or natural occurrences like radon. Detecting vapor intrusion early is crucial to prevent potential health hazards. Proper mitigation strategies can effectively manage and reduce its impact, ensuring a healthy indoor environment. Understanding the sources and behavior of vapor intrusion helps in planning effective remediation strategies. It highlights the importance of regular testing and monitoring in safeguarding indoor air quality against this silent threat.

Detecting vapor intrusion involves assessing the potential pathways through which vapors can enter a building. The process typically starts with a thorough site assessment to understand the historical uses of the land, which might have led to contamination. Soil gas probes can be installed around and beneath the building to measure concentrations of volatile organic compounds and radon. Additionally, indoor air quality tests are conducted to identify the presence of harmful vapors within the building. Advanced diagnostic tools play a critical role in this detection process, providing accurate and reliable results. By collecting samples from both the source of contamination and indoor spaces, one can determine the extent of vapor intrusion. Continuous monitoring systems can also be utilized to assess changes in vapor levels over time. Through a combination of these methods, experts can effectively detect and analyze vapor intrusion, forming the basis for designing appropriate remediation strategies. Accurate detection aids in effectively protecting building occupants from possible health hazards associated with vapor exposure.

Vapor intrusion poses several health risks, primarily due to exposure to volatile organic compounds (VOCs) and radon gas. These substances can lead to a variety of health issues, ranging from short-term irritations to long-term chronic conditions. Short-term exposure to VOCs might cause symptoms like headaches, dizziness, respiratory problems, and eye irritation. Longer exposure increases the risk of more severe health issues, including damage to liver, kidney, or central nervous systems, and increases the risk of cancer. Radon exposure is a well-known risk factor for lung cancer, ranking second only after smoking as a leading cause. Understanding these health risks underlines the importance of timely detection and mitigation of vapor intrusion. Professionals in this field are trained to understand and minimize these risks through tested mitigation strategies. Ensuring indoor air quality is a priority when it comes to protecting the health and wellbeing of building occupants from such vapor-induced threats. Regular monitoring and effective remediation can significantly reduce these health risks, ensuring safety.

Effective mitigation methods for vapor intrusion are designed to prevent vapors from entering the living spaces of a building. One common method is the installation of vapor barriers or retarders, which act as physical obstacles to block vapors from seeping through cracks and openings. Another approach involves the use of Active Soil Depressurization (ASD) systems, which lower the air pressure in the soil below a building’s foundation to keep vapors from entering indoor spaces. Additionally, sealing all cracks and potential openings in foundations and walls ensures that entry points for vapors are minimized. Advanced systems might integrate continuous monitoring and air filtration to provide ongoing protection. Collaborating with construction and design professionals ensures that mitigation methods are tailored to specific site conditions and building designs. Regular inspections and maintenance of these systems ensure their effectiveness over time. By implementing these strategies, buildings can maintain a safer and healthier indoor environment, free from the risks associated with vapor intrusion. Tailored solutions considering individual building requirements enhance the overall efficacy of mitigation.

Vapor intrusion testing involves the collection and analysis of samples from both the soil and indoor air to identify the presence and concentration of harmful vapors. Initially, testers will perform a site assessment to determine potential sources of contamination. They may install soil gas probes around and beneath the building to sample underground vapors. These samples are then tested for volatile organic compounds (VOCs) and radon. Complementary air sampling might also be conducted indoors to evaluate the quality of the air occupants breathe. Advanced diagnostic tools and techniques are often employed to ensure accuracy and reliability. The testing results help experts to understand the extent of vapor intrusion, determine its potential sources, and assess its impact on indoor air quality. Based on these findings, recommendations can be tailored regarding mitigation strategies or further actions needed. Continuous or periodic monitoring could also be suggested to keep track of vapor levels over time. Thus, comprehensive vapor intrusion testing is crucial for ensuring safety and informing effective mitigation practices.

The frequency of testing for vapor intrusion largely depends on the specific conditions of the site and the presence of potential contamination sources. For buildings located near known contamination sites or those with historical usage that suggests a risk of vapor intrusion, initial testing followed by regular monitoring is recommended. In general, an annual testing cycle ensures that any changes in vapor levels or new intrusion pathways are identified promptly. However, if significant changes to the building structure or the surrounding land occur, such as renovations or land use changes, additional testing might be necessary. For newly built constructions, baseline testing should be performed to establish an initial reading. Consultation with environmental and health professionals can provide guidance on the appropriate testing schedule for a particular building. Proactive and periodic testing contributes to maintaining a safe indoor environment, protecting occupant health, and complying with relevant regulations. Continuous monitoring systems may provide additional assurance by tracking real-time vapor levels and alerting of significant changes.

If vapor intrusion is detected in your building, it is important to take prompt action to address the issue and minimize health risks. The first step is to consult with professionals who specialize in vapor intrusion remediation. They will conduct a detailed assessment to understand the extent of the intrusion and identify the most effective mitigation methods. In many cases, quick measures such as sealing cracks and improving building ventilation can help reduce the immediate impact. Professional mitigation solutions may involve installing vapor barriers or Active Soil Depressurization systems to block and redirect vapors away from indoor spaces. Regular monitoring might be set up to track the effectiveness of implemented solutions and ensure ongoing safety. Communication with building occupants about the steps being taken and the importance of remediation can help maintain trust and transparency. Taking decisive action not only protects health but also contributes to sustained indoor air quality. Utilizing experienced professionals ensures that remedial efforts are tailored, efficient, and effective in the long term.

Professional help is highly recommended for handling vapor intrusion issues due to the expertise and specialized equipment required for accurate detection and effective mitigation. Professionals are trained to assess the site comprehensively, identify potential sources of vapors, and evaluate their concentration in soil and indoor air. Their expertise allows for the identification of complexities and nuances that might not be evident to a layperson. Additionally, professional remediation services offer tailored solutions designed specifically for the type, source, and level of contamination involved. They also utilize advanced technology and diagnostic tools to ensure precision and reliability in both detection and mitigation. Moreover, professionals are familiar with environmental regulations and standards, ensuring compliance is maintained throughout the remediation process. Investing in expert assistance guarantees that interventions are not only effective but also sustainable over time. Efficient and professional management of vapor intrusion ensures safe indoor environments and provides peace of mind to building occupants and stakeholders alike.

Yes, new constructions can significantly benefit from vapor intrusion assessments as part of their initial site evaluation and design planning. Conducting these assessments early on allows for the identification of any potential vapor intrusion risks before construction begins, making it easier to address them proactively. By integrating vapor intrusion evaluations into the planning phase, developers can incorporate mitigation measures such as vapor barriers or proactive site remediation into the building’s design. This foresight helps prevent future issues concerning indoor air quality and the health of occupants. Additionally, identifying all potential vapor sources allows for enhanced structural planning and adherence to environmental regulations. Addressing vapor intrusion risks early not only optimizes resource usage but also ensures sustainable and safe construction practices. It highlights the builder’s commitment to high standards of environmental health and safety. Collaborating with environmental professionals from the planning stages ensures that the construction project meets quality standards and adequately addresses all possible environmental concerns.

Our Achievements & Affiliations

Our certifications and affiliations underscore our commitment to excellence in radon management. As trusted leaders, these accomplishments highlight our expertise and dedication to delivering the highest quality service and solutions in the industry.

Multifamily Mitigation Certificate
Multifamily Measurement Certificate
Certified Radon Measurement Professional Badge NRPP
Certified Radon Mitigation Specialist Badge
National Radon Proficiency Program Badge

Facts About Radon

#1
Cause of Lung Cancer
After Smoking
colorado homes have
5X hIGHER
Radon LevelS Than The Rest Of The US
1
In
2
Homes in COLORADO Test High for Radon LEVELS

What Our Customers Say
About Our Services

  • We had a great experience with Evergreen. They replaced a damaged vapor barrier in our crawlspace, and the entire process was smooth and professional.
    Katherine w.
  • Outstanding service! Evergreen Radon’s team explained every step of the radon mitigation process, delivering high-quality work with impressive attention to detail.
    Michael T.
  • Thanks to Evergreen Radon, our office now complies with all safety standards. Their expertise is unmatched and customer care is exceptional.
    Linda K.
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Resources About Radon SERVICES

Explore our comprehensive resources to understand radon and why it’s crucial for ensuring safe living and working environments. Our expert insights empower you with knowledge for effective radon management.