New Jersey Warehouse Protected from Former Industrial Contaminants
Project snapshot highlights:
- Former Industrial Property Redeveloped in New Jersey
- Substantial Cost and Time Savings Realized
- 150,000 Square Feet Installed
The building occupies a former industrial property in northern New Jersey, which has been developed into a large, nearly four-acre warehouse. Various contaminants, including chlorinated solvents and petroleum hydrocarbons, were historically used on-site, resulting in the presence of soil gas vapors and the potential for vapor intrusion. To mitigate this risk, the MonoShield® vapor barrier and a passive venting system were installed. The original vapor mitigation design called for a traditional HDPE liner with a geotextile fabric to be installed below the liner. Land Science was able to save significant time and money by suggesting the use of the MonoShield vapor barrier. The MonoShield system uses a spray-applied nitrile-advanced asphalt latex to seal the vapor barrier seams and penetrations, thus saving substantial time over traditional welding of HDPE liners. In addition, the MonoShield vapor barrier includes a geotextile fabric thermally bonded to the underside of the barrier, eliminating the need for the additional geotextile layer. This site-specific design not only saved on the overall system cost, but it also sped up of the vapor barrier installation time which ensured the project was completed on time, meeting the growing demand for warehouse space in northern New Jersey.
MonoShield Provides a Safe Environment for Young Athletes
Project snapshot highlights:
- Newly Developed Indoor Sports Training Facility
- Constructed Near a Former Landfill
- 20,000 Square Feet Installed
A new indoor sports training facility in Michigan includes two open-field playing areas, encompassing approximately 20,000 square feet. The facility was constructed near a former landfill, and a combination of soil gases act as potential vapor intrusion sources, including methane, petroleum hydrocarbons, and chlorinated solvents. The building’s foundation consists of caissons with grade beams in the areas spanning the waste material and trench footings along the edges. The engineering consultant, SME, compared the soil gas results to the listed screening levels to support the design of the vapor mitigation system. The project development team selected MonoShield® over a 20-mil, taped-seam vapor barrier due to its superior chemical resistance and quality control testing by a Land Science certified applicator, making the application more efficient and providing a high degree of confidence to the project stakeholders.
Medical Center Construction Proceeds Following Elimination of Vapor Threat
Project snapshot highlights:
- TerraShield Protects New Medical Facility
- Threat From PHC Vapors Eliminated
- 22,000 Square Feet Installed
The project is a new medical facility in western Michigan built on a site impacted with petroleum hydrocarbons in soil gas, posing a vapor intrusion risk. Multiple vapor mitigation systems were evaluated, and TerraShield® was selected by the project development team based on its enhanced chemical resistance versus other composite spray applied vapor barriers. The reinforced metalized film base layer, in combination with the nitrile advanced asphalt latex makes the TerraShield vapor barrier the new gold standard for vapor intrusion barrier performance. For quality control, our certified applicator conducted smoke testing underneath the barrier to confirm a vapor-tight system. The Land Science Certified Applicator completed the project successfully, enabling construction to move forward.
Brownfield Redevelopment Makes Way for Mixed-Use Property in Nation’s Capital
Project snapshot highlights:
- Brownfield Redevelopment in Washington, DC
- Mixed-Use Development in Nation’s Capital
- 32,000 Square Feet Installed
The former brownfield site was targeted for redevelopment in the nation’s capital. The project is a 32,000 square feet mixed-use development in the heart of Washington, D.C. The environmental consultant specified the MonoShield® vapor barrier system with passive venting as a proactive step to prevent vapor intrusion of low-level petroleum hydrocarbon vapors. The MonoShield vapor barrier system was included in the site’s Corrective Action Plan and was approved by the Department of Energy and Environment prior to its installation.