Introducing A New Advanced Nitrile Composite Barrier System
Nitra-Seal incorporates a nitrile-modified spray applied core and dual polyethylene sheets.
Key Benefits of Nitrile:
The dual chemical resistant layers combined with the spray-applied Nitra-Core form a barrier resistant to a wide range of chemical pollutant vapors.
Nitra-Seal is “construction friendly” as the curing time of the Nitra-Core layer and the ability to apply it in cool
er temperatures ensures quick installation and minimizes the impact on construction schedules.
Nitra-Seal forms a highly puncture resistant barrier that greatly reduces the chance of damage occurring after installation and prior to the placement of concrete.
TerraVent can be used in conjunction with Nitra-Seal to alleviate the buildup of vapors beneath structures as a result of vapor barrier implementation. Terra-Vent can be utilized as an active or passive ventilation system depending on the requirements of the design engineer.
Nitra-Seal Triple-Layer System
Dual Chemical Resistant Layers
The Nitra-Base layer (bottom) and the Land Science Bond layer (top) are composed of a HDPE material bonded to a geo-textile on the out-facing side. HDPE is known for chemical resistance, high tensile strength, excellent stress-crack resistance and for highly reliable subsurface containment. The geo-textile which is physically bonded to the chemical resistant layer accomplishes two goals; it allows the Land Science Bond layer to adhere to the slab, and provides a friction course between the Nitra-Base layer and the soil.
Spray-Applied Nitra-Core Layer
The Nitra-Core layer is composed of a unique, nitrile-modified asphaltic membrane which also provides additional protection against vapor transmission1. Nitrile has been proven to offer exceptional chemical resistance in a wide range of applications. This layer creates a highly-effective seal around slab penetrations and eliminates the need for mechanical fastening at termination points.
1 US and International patents pending
The Nitrile Advantage
Nitra-Seal employs a chemically resistant nitrile latex. Nitrile is recognized throughout the environmental engineering industry as being chemically resistant and is often used in personal protective equipment when working on hazardous waste sites (e.g. nitrile gloves). Laboratory testing has shown up to 10X higher chemical resistance when compared to any other vapor barrier material on the market.
Nitra-Seal has been lab-tested and proven to be highly effective against VOCs like chlorinated solvents and petroleum contaminants, and methane.
Nitra-Seal is a significant improvement over all other composite vapor barriers on the market due to the use of chemically resistant Nitrile instead of typical spray applied barriers.
Nitra-Seal employs a nitrile-modified spray applied core offering excellent chemical resistance.
Land Science Certified Applicators ensure barriers are properly installed, reducing risk.
The Nitra-Seal System
Nitra-Seal is a composite barrier system that incorporates a nitrile spray-applied component significantly reducing the potential for indoor air exposure to sub-slab chemical vapors.
Improved Performance Over Current Vapor Mitigation Systems
This case study reviews a site at the former Hazel Park Raceway, located in a designated Opportunity Zone, which was established by the US Federal Treasury to encourage businesses to invest in blighted properties by providing tax incentives. These tax incentives made the redevelopment of the Hazel Park Raceway possible. In the course of evaluating potential remedial options for the 650,000 square foot warehouse facility (Tri -County Commerce Building #2), consulting firm SME approached Land Science, a division of REGENESIS, to incorporate a vapor barrier system to address the harmful vapor intrusion.
This case study features the following:
- With MonoShield offering a more reliable, cost-effective solution, the project was assured of meeting milestones and staying on time and on budget.
- Hazel Park welcomed the economic development and the promise of future jobs coming to the community through this key redevelopment project.
- The support of the city of Hazel Park, the state of Michigan, the Michigan Economic Development Corporation (MEDC), and the Michigan Department of Environment, Great Lakes, and Energy (EGLE) has made it possible to redevelop the Hazel Park Raceway.
- After a successful application at nearby Liberty Park, MonoShield was chosen as the best vapor intrusion mitigation solution for the Tri-County Commerce Building #2.
In 1949, the Hazel Park Raceway opened and for many years, was the only horse track in Michigan offering live thoroughbred racing. Until recently, the track was a significant source of income for the city and at one point represented 1/3 of the city’s revenue. However, as a result of larger demographic and financial changes in the city of Hazel Park, the track was permanently closed in 2018 and the remaining horse stables were cleared to make way for new warehouse space.
In 2015, the first portion of the Hazel Park Raceway was sold for redevelopment. The portion that was sold was an overflow parking lot for the raceway. This site was remediated and redeveloped by Ashley Capital. This successful redevelopment created 575,000 square feet of industrial and manufacturing space known as the Tri-County Commerce Center. In 2018, Ashley Capital purchased the rest of the Hazel Park Raceway property and construction for the Tri-County Commerce Building #2 began.
MonoShield Installed at Hazel Park
This case study reviews a brownfield site that posed multiple remediation challenges with a variety of known contaminants including arsenic, lead, and methane. To build on the site would require a unique foundation along with a vapor intrusion mitigation solution. Working with the developer Ashley Capital’s environmental consulting firm SME, Land Science recommended MonoShield, a new and innovative vapor intrusion mitigation system. This modified asphalt-nitrile vapor barrier system is designed to withstand even the toughest vapor intrusion conditions, ensuring a safe environment for years to come. SME chose to be the first to install MonoShield because it provided the best chemical resistance for this brownfield site and would also save the client time and money.
This case study features the following:
- Liberty Park is being transformed from underutilized into a property that will bring jobs and growth to the community.
- MonoShield has the efficiency of a prefabricated barrier system and the flexibility and responsiveness of a spray-applied component for sealing penetrations, wall terminations, and seams.
- MonoShield is both time — and cost-efficient; it can be installed 30-40% faster than alternate plastic sheeting or HDPE systems.
- Cooperation among numerous stakeholders: The Michigan Department of Environment, Great Lakes, and Energy (EGLE), Ashley Capital, SME, Oliver Construction, Land Science, and S&H Waterproofing.
Subsurface contamination caused by chlorinated volatile organic compounds (CVOCs) beneath a former jazz club posed a direct risk to the indoor air quality for a Renton, Washington property. The CVOCs had migrated beneath the property from a neighboring dry cleaning operation resulting in a vapor intrusion (VI) issue. When environmental consultant Maul Foster Alongi performed a cost analysis of different vapor mitigation and remediation approaches, it was found that the Retro Coat™ Vapor Intrusion Coating System would provide an excellent solution at about a third of the cost less than other remedial approaches.
This case study features the following:
- How Maul Foster Alongi achieved 33% cost savings compared to alternative remedial approaches
- Indoor air quality evaluation of TCE and other VOCs
- Retro-Coat application details
- Vapor mitigation performance results and indoor air quality findings after the installation of Retro-Coat