Geo-Seal® and Vapor-Vent™ Approved to Protect Urban School Complex from Harmful PHC and cVOC Contaminants
Project Highlights
- Geo-Seal® applied to 40,000 square feet of new construction
- Geo-Seal and Vapor Vent™ approved by California Department of Toxic Substances Control
Project Summary
A former manufacturing facility site in Oakland, California was contaminated due to years of engine repair, vehicle maintenance and fuel storage that took place on the property. The site is currently being used as a school complex and the Oakland Board of Education approved construction of a modern facility. However, after a site assessment was completed, it was determined that high levels of petroleum hydrocarbons, PAHs and chlorinated solvents were present.
Ninyo and Moore prepared a Removal Action Work Plan and Operation and Maintenance plan for approval by the California Department of Toxic Substances Control. An excavation remediation plan was implemented on-site to dispose of the majority of the contaminated soil and groundwater. A vapor mitigation system was utilized to avoid any potential inhalation risk that remained. Geo-Seal and Vapor-Vent were applied to 40,000 square feet of new construction to mitigate the vapor intrusion risk and meet regulatory requirements.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Large Manufacturing Facility Addresses Migrating cVOC Plume with Geo-Seal®
Project Highlights
- Geo-Seal®‘s triple‐layer protection consisted of spray‐applied membrane encapsulated with HDPE providing chemical resistance and ease of application
- 100,000 square feet of barrier successfully installed in 10 days, saving the owner three weeks of costly labor compared to the originally specified PVC sheet
- Smoke testing procedure ensured integrity of barrier and installation
Project Summary
A 104,000 square foot manufacturing facility required the use of a vapor barrier due to migrating chlorinated solvents in groundwater from a nearby plume. In addition to the vapor barrier, a 30 mil battened and welded PVC sheet was also specified for enhanced protection which required an extended installation time. Five weeks were estimated to install the PVC sheet due to a complex 20,000 square foot office area adjacent to the manufacturing facility.
To save time while delivering a safe and effective solution, Geo‐Seal Vapor Intrusion Barrier was installed and eliminated the need for the PVC sheet installation. Geo‐Seal contains a triple layer protection that includes a 60 mil spray-applied asphalt/latex layer encapsulated with two layers of high density polyethylene, providing a system that is chemically resistant yet easy to install.
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© 2020 All rights reserved. Geo-Seal is a former registered trademark of REGENESIS. Geo-Seal is now a registered trademark of Epro Services Inc.
Upscale Grocer Selects Geo-Seal® to Protect Key Property Against Presence of Methane and VOCs
Land Science®, a leader in providing cost-effective, industry-leading vapor intrusion mitigation solutions, was chosen by a leading upscale grocer to provide a vapor mitigation system to protect against the presence of methane and volatile organic compounds (VOCs).
The grocer selected Geo-Seal for this project due to its proven performance for blocking VOCs on hundreds of sites with the lowest diffusion rates in the industry.
Ultra Premium Grocer Driven by Need for Safest Barrier Solution for Commercial Site
The installation of the Geo-Seal Vapor Intrusion Barrier under the grocery store was triggered by the adjacent property, which had a history of being used as a landfill. The grocer, which had developed a reputation for providing ultra-premium, high quality foods, had concerns when testing revealed the presence of methane, along with volatile organic compounds. The supermarket undertook a proactive interest in addressing the vapor intrusion since it was to be the anchor store for a large commercial site.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Land Science Builds Impressive Track Record with Geo-Seal® in QSR Category
As a leader in providing cost-effective, industry leading technologies to engineering firms and real estate developers across a broad range of categories, Land Science continues to forge a history of successful outcomes in sustainable land development for the Quick Service Restaurant (QSR) industry.
In most cases, our QSR clients are interested in the redevelopment of high traffic locations where, typically, gas stations, dry-cleaners, manufacturing, or even brownfield sites exist. During the redevelopment of these locations there is an understanding of the historic use of the site, prompting our clients to take a proactive approach in mitigating vapor intrusion. Part of that approach can include the remediation of the site and the installation of a vapor intrusion barrier to prevent the potential for residual vapor contaminants from migrating into the new structure.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Major Airline Installs Geo-Seal® to Successfully Expand Maintenance Facility
Project Highlights
- Triple-layer protection and high puncture resistance addressed concerns over permeation into the building
- Enhanced chemical resistance over spray-applied asphalt/latex material
- Installation of Geo-Seal® allowed project to remain on schedule
- Vapor-Vent trenchless system installed to collect and vent vapors from beneath the structure
Project Summary
The Dallas Love Field airport originally opened in 1917 and has over 90 years of aviation use. A major airline decided to expand their current facilities at Love Field which included the construction of a new maintenance facility. An underground storage tank was discovered prior to construction and insufficient historical site records caused concern for potential indoor air vapor in the new building. A vapor intrusion barrier was sought to protect the new structure from potential vapor intrusion and keep the project on schedule.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Historic Building Achieves Site Closure Using Retro‐Coat® to Meet Environmental Screening Levels
Retro‐Coat was selected to mitigate vapor intrusion within a structure built in 1907 that had been impacted by both a former underground storage tank and a local dry cleaner. Indoor air samples taken prior to application showed chlorinated solvent‐based PCE and TCE levels above the Regional Water Quality Control Board Environmental Screening Levels (RWQCB ESL).
Geo-Seal® Receives State Approvals While Eliminating Costly, Time Consuming Multi‐Membrane Installation
Project Highlights
- Approximately 55,000 square feet of GeoSeal® installed
- Geo‐Seal eliminated the need for more costly and time consuming multiple membrane applications
- Applied in colder temperatures, (below 45°F) without artificial heat, saving the client time and money
- Approved by the State of Delaware for chemical and water protection
Project Summary
The new Kent County Courthouse was in need of gas vapor mitigation resulting from a subsurface contaminant plume. Originally, a spray‐applied asphalt/latex membrane for gas vapor protection was specified in addition to a bentonite product for waterproofing protection.
The end result would have required the installation of two membrane systems, one for gas vapor and one for waterproofing. As the project progressed, the construction start was scheduled to take place in the winter. The cold temperatures posed a problem for the installation of the specified gas vapor barrier due to the costly need for tenting and artificial heating, per the manufacturer’s requirements.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Combined Technologies Treat High Vapor and TCE Levels at Former Michigan Manufacturing Facility
St. Johns‐based F.C. Mason company was provided a $1 million Clean Michigan Initiative Brownfields grant from the Michigan Department of Environmental Quality (MDEQ) to move its operations to the former Federal Mogul manufacturing facility which was vacated in 2008. F.C. Mason Company was founded in 1898 and specializes in manufacturing parts for agricultural, construction and industrial equipment. The acquisition of the 265,000‐square‐foot facility allows F.C. Mason to expand operations and bring back valuable jobs to Clinton County. Michigan‐based Soil and Materials Engineers, Inc. (SME) was consulted to address the suspected environmental and vapor intrusion concerns resulting from years of manufacturing activities at the site.
Detroit Redevelopment Project Awarded the Brownfields US EPA Phoenix Award
Project Highlights
- Awarded the US EPA Brownfields Phoenix Award
- Geo-Seal® and Vapor-Vent™ applied to 275,000 square feet
- Distribution center will bring 140 jobs to the Detroit area
Project Summary
A 17.5 acre Brownfield site in Detroit, which once housed multiple factories, fuel storage operations, a rail yard, paint shops and commercial structures has recently been developed into a medical distribution center for a major medical supply company. Subsurface investigations within the area identified that the historical operations released volatile organic compounds (VOCs), including chlorinated solvents, which posed a potential risk to the indoor air quality of the proposed medical supply warehouse facility. The environmental consultant (AKT Peerless) was able to secure Brownfield funding through the Michigan Department of Environmental Quality (MDEQ) and prepared and submitted a Vapor Mitigation System Work Plan to the MDEQ which detailed the installation of the system design for the proposed new building.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Geo‐Seal® Becomes First Vapor Intrusion Mitigation Barrier Approved Under Florida Cleanup Program
Project Highlights
- First vapor intrusion mitigation barrier approved by the Florida Department of Environmental Protection (FDEP) under the Drycleaning Solvent Cleanup Program (DSCP)
- Former drycleaner site successfully redeveloped and protected from harmful PCE and TCE contaminants
- National pharmacy retail chain selects Geo-Seal® as part of construction plans
Project Summary
To accommodate a planned expansion, CVS Pharmacy acquired an adjoining vacant building (approximately 3000 square feet) which formerly operated as a commercial dry cleaning facility. Site investigations revealed chlorinated solvent contamination in groundwater beneath the building, including tetrachloroethene (PCE) and trichloroethene (TCE).
The site was entered into the FDEP’s Drycleaning Solvent Cleanup Program. In order to prevent chlorinated contaminant vapor intrusion, Golder Associates designed a mitigation system using the Geo‐Seal Vapor Intrusion barrier. A soil vapor extraction system and monitoring wells were also installed to effectively treat the subsurface contamination.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.