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.
Construction Moves Forward on New Bank Location Once Geo‐Seal® is Installed to Mitigate Vapor Intrusion Risk
Project Highlights
- Geo‐Seal®’s triple‐layer composite protection and high puncture resistance provided ease‐of‐mind to the client looking to mitigate vapor intrusion
- Vapor‐Vent™ Trenchless Vent System installed to collect and remove buildup of vapors beneath the structure
- Installation of 4,000 square feet
Project Summary
The construction of a new Compass Bank location was scheduled to be built over a site with chlorinated solvents residing in the subsurface. A vapor intrusion membrane was sought to prevent vapor intrusion entering the building from the contamination below. Initially, a simple spray‐applied asphalt/latex material was specified. However, TGE Resources requested Geo‐Seal be approved by the design engineer because of its superior chemical resistance and ability to prevent chlorinated solvent vapors from migrating into the new building’s construction.
Geo‐Seal was approved by Brownfield Subslab and favored as a superior alternative to the specified barrier because of its ability to resist contaminant permeation breakthrough for periods 18 times longer than a simple asphalt/latex membrane. Geo‐Seal proved to be a cost‐effective choice for the owner and was successfully installed along with Vapor‐Vent trenchless venting system. Overseeing the installation was Brownfield Subslab, a certified Geo‐Seal inspector.
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© 2021 All rights reserved. Geo-Seal is now a registered trademark of Epro Services Inc.
Geo‐Seal® Selected Over Alternative Gas Membrane Systems to Effectively Mitigate Vapor Risk at Urban Chicago Recreation Facility
Project Highlights
- Geo‐Seal® selected over other vapor barrier options due to its superior chemical resistance, ease of constructibility and cost‐effectiveness
- Approximately 16,000 square feet of Geo‐Seal successfully installed
- Vapor‐Vent™ HD trenchless passive ventilation system utilized to alleviate buildup of vapors beneath the structure
- Site achieves LEED “Silver” Certification for green construction technology on historic site
Project Summary
A new fieldhouse utilizing the latest in green technology was constructed by the Public Building Commission (PBC) in the city of Chicago, IL. The development incorporated various sustainable design elements and materials to achieve the Commission’s goal of LEED “Silver” Certification. Past use of an adjacent property resulted in chlorinated solvent contamination which presented a vapor intrusion risk on‐site.
Geo‐Seal, a triple‐layer, composite vapor intrusion barrier was installed to protect the users of the fieldhouse from potential exposure to chlorinated solvent vapors. The Geo‐Seal technology was chosen by PBC’s consultants, Parson Corporation and Carnow Cornibear & Associates, based on an evaluation of various gas membrane technologies, including a simple spray‐applied asphalt latex membrane and HDPE sheeting. The Geo‐Seal system was designed and inspected by Terracon Consultants.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Denver Luxury Apartment Community Protected From Vapor Intrusion Risk Following Successful Geo‐Seal® and Vapor‐Vent® Installation
Project Highlights
- Geo‐Seal® provided a proven, chemically‐resistant technology which effectively sealed around plumbing, electrical penetrations, and foundation terminations
- Approximately 90,000 square feet of Geo‐Seal and Vapor‐Vent™ successfully installed
- Applied in below freezing temperatures and winter conditions
Project Summary
The Alta Alameda Station, developed by Wood Partners, L.L.C., is a 338‐unit luxury apartment community located in the diverse and urban Baker neighborhood of Denver, Colorado. The three‐building, four‐story, residential project is constructed on the former Denver Studio Complex that was used in the production of many Perry Mason movies. It is directly across the street from the Alameda Light Rail station, the hub of Denver’s mass transit system which provides access to downtown Denver and the Denver Tech Center. Terracon Consultants, Inc. specified the Geo‐Seal vapor intrusion barrier with Vapor‐Vent to protect the buildings from contaminant vapor intrusion. The concept behind the specified approach was to provide a barrier to block all vapor intrusion pathways and provide a vapor collection system underneath the membrane to alleviate the buildup of vapors by passively venting the vapor from beneath the building.Ideal for sites where residual contamination is known, but not fully characterized, Geo‐Seal and Vapor‐Vent provide building owners with long‐term vapor intrusion protection and no maintenance. Geo‐Seal was selected over other barrier technologies due its protection against chlorinated solvent‐type contamination and the ability to be applied in colder temperatures. To provide additional peace of mind to the client, Land Science® provided a 20‐year warranty against vapor intrusion for the Geo‐Seal system.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Land Science Technologies eNewsletter – Archived Edition
Interested in vapor intrusion solutions? This spring, Land Science Technologies published an enewsletter that featured recent developments in the field. Features include a case study about a 275,000 square-foot Brownfields site that was re-developed into a medical supply warehouse, creating 140 jobs in Detroit, MI. Kelly Ameli Smith is introduced as the new Director of Land Science Technologies, and you have the opportunity to view an on-demand recorded webinar about vapor intrusion regulatory updates and solutions and solutions for new and existing structures.
Click here or use the button above to view an archived copy of the newsletter.
CASE STUDY: Big Box Retail Store Receives “No Further Action” Status after Geo-Seal Application
Project Highlights
- Incorporated the new Illinois Environmental Protection Agency’s (IEPA) Tiered Approach to Corrective Action Objectives (TACO) legislation vapor intrusion regulations
- Geo-Seal® applied to 150,000 square feet of commercial space
- Geo-Seal® application helped obtain a “No Further Action” letter
Project Summary
Geo-Seal was selected to mitigate vapor intrusion at a new retail development in Skokie, Illinois. The former industrial site was contaminated with chlorinated solvents (PCE, TCE, DCE and VC) and regulatory agencies required mitigation. A developer purchased the underutilized 15-acre light industrial business park for redevelopment and initial due diligence investigations identified numerous environmental issues on the property.
Geo-Seal was applied to 150,000-square-feet of retail space and the applicator was able to meet union labor guidelines for the project. Vapor intrusion risks were also mitigated at a fast-food restaurant and bank on-site through the application of Geo-Seal. The site was issued a draft “No Further Remediation” letter with the final letter issued upon completion of the engineered barriers constructed as part of the redevelopment.
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© 2021 All rights reserved. Geo-Seal is a registered trademark of Epro Services Inc.
Land Science Technologies Leads Technical Discussion at International Industry Conference
Land Science Technologies’ Director Peter Grant led a technical discussion at last week’s Battelle-sponsored Ninth International Conference on Remediation of Chlorinated and Recalcitrant Compounds in Monterey, California. Grant’s presentation was titled “Mitigating Vapor Intrusion in Existing Structures Through the Use of a New Coating Technology”.
During his talk, Grant discussed the recent advancements in the technology of vapor intrusion barriers to address the growing need of applying barriers to existing buildings. He highlighted Land Science Technologies’ Retro-Coat™ as a way to provide a chemically-resistant physical barrier to block vapor intrusion.
The Retro-Coat vapor intrusion coating system is applied directly to existing concrete slabs. Unlike other vapor intrusion barrier systems, Retro-Coat is designed specifically to handle foot and vehicular traffic. Specially formulated to be chemically resistant to constituents commonly found on brownfields, PCE, TCE and Benzene, Retro-Coat can be used as a standalone barrier or in conjunction with a SSD system.
Grant also presented field data where the use of Retro-Coat was proven to be successful.
For more information on Retro-Coat, click here or call 949-481-8118.