Crucial Design Tips for Effective Vapor Mitigation Implementation
We were pleased to have special guest speaker Spencer Cox, Project Environmental Specialist at United Consulting, share his extensive contaminant vapor mitigation implementation experience in this month’s “Distinguished Speaker” webinar. His presentation provided crucial design tips for practitioners responsible for vapor mitigation planning and construction with an emphasis on the design process. Attendees gained valuable insight into the significance of vapor mitigation and the pivotal role a robust QA/QC program, along with proper installation techniques, play in ensuring the long-term success of their project. He was joined by Jason Wilt, Southeast District Technical Manager at Land Science.
Practical Tips Include:
- Different types of mitigation solutions and the best practices for installation and repair
- Why certain vapors, like methane, require an extra level of attention due to their immediate danger
- Details on more protective, cost-effective vapor barriers using metalized film and nitrile-advanced spray-applied technology
- Thorough and effective QA/QC processes to ensure successful installation of vapor mitigation systems
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November 2023 Land Science Newsletter
Featured Case Study | 1.2 Million Square Foot MonoShield Application Protects Historic Steel Manufacturing Site
On the site of one of the largest former steel mills in the world, a large logistics center redevelopment project is underway. The development promises to transform the historic site into 15 million square feet of warehousing space and bring the community anywhere from 5,000 to 10,000 new jobs. Working with the environmental consultant and the developer, Land Science was chosen to incorporate the MonoShield contaminant vapor barrier system to preemptively address any potential vapor intrusion issues.
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Technical Data Sheet | One of the Fastest Vapor Barriers to Install is Also One of the Safest
MonoShield is a single-layer, underslab contaminant vapor barrier offering superior chemical resistance, durability, and ease of installation versus traditional sheet membranes. MonoShield is an optimal mitigation solution to reduce liability for large, slab-on-grade buildings where installation speed is critical, for sites with a low-level vapor intrusion (VI) risk, or for use in conjunction with active sub-slab venting systems.
eBook | 5 Reasons to Consider a Preemptive Vapor Barrier System to Protect Your Property Investment
Historically, easily punctured thin-mil plastic sheets or inflexible and difficult-to-seal High-Density Polyethylene (HDPE) Barriers were the only option for vapor mitigation at large warehouses or sites where regulatory requirements were not a driving risk factor. These solutions offered either chemical resistance or constructability, but not both. Composed of an innovative metalized film, MonoShield sets the standard for preventing diffusion and permeation of chemical vapors.
Case Study | Retro-Coat Protects Los Angeles Contemporary Art Gallery
PCE was detected in the soil gas beneath a commercial building housing a contemporary art gallery and studio suite in a Los Angeles neighborhood. Investigations revealed that a regional groundwater contaminant plume, originating from an upgradient source, was the cause of PCE in the soil vapor, and indoor air sampling results showed that the intrusion of PCE-impacted soil vapor to the indoor air was a complete exposure pathway for on-site workers. As a result, a mitigation plan was required to protect against potential VI exposure to PCE. The contaminant vapor barrier selected for implementation was Retro-Coat, a low-permeability, epoxy coating system proven effective at preventing VI of volatile organic compounds like PCE and a favorable choice for existing structures.
Webinar | Retro-Coat 101: A Complete Guide to the Retro-Coat Vapor Barrier System
Land Science hosted a webinar with vapor intrusion technical expert, Hieu Nguyen, to discuss an in-depth overview of the Retro-Coat vapor intrusion system along with tips on best practices when applying Retro-Coat for existing structures. Learn more about Retro-Coat by listening to the webinar recording.
Video | 5 Reasons Land Science Saves You Time and Money
As a leader in vapor intrusion mitigation, Land Science, a division of REGENESIS, is known for introducing cutting-edge technologies. But we are also gaining a reputation for saving our clients time and money. Here are five reasons why.
Upcoming Event | NEBC Business and the Environment Conference
12/5 – 12/6/2023 | Portland, OR
Have a Vapor Intrusion Project? Get Started Today!
To receive a custom vapor intrusion solution, please call 949.481.8118 or visit landsciencetech.com/contact-us
1.2 Million Square Foot MonoShield Barrier Protects Future Tenants at Historic Manufacturing Site
Case study highlights:
- 1.2 million square feet of MonoShield installed in new logistics center
- MonoShield provides advanced chemical protection with a rapid installation process
- Land Science Certified Applicator, MTN, Inc. leverages experience to ensure the investment is protected
On the site of one of the largest former steel mills in the world, a large logistics center redevelopment project is underway. Strategically positioned along the I-95 Corridor, the ongoing development promises to transform the historic site eventually into 15 million square feet of warehousing space. With plans for 20 buildings, the developer is investing $1.6 billion in both the construction and remediation of the once blighted site. The former steel mill site had been impacted by chlorinated solvents and petroleum contaminants in different areas of the property. Therefore, a component of the remediation and redevelopment efforts involves addressing the potential for vapor intrusion (VI). A design engineer was brought onto the team to develop a VI mitigation plan to ensure a safe and healthy environment for future building workers.
Retro-Coat Protects Los Angeles Contemporary Art Gallery
Case study highlights:
- Retro-Coat Vapor Intrusion Coating System application achieved compliance with the Los Angeles Regional Water Quality Control Board (LARWQCB) standards for VI mitigation
- Retro-Coat chosen as a low-cost mitigation solution with outstanding chemical resistance that provides aesthetic value to a building’s interior space
- Land Science Certified Applicator, Systems Waterproofing ensured the manufacturer’s specifications were strictly followed
This case study reviews a site where PCE (perchloroethene) was detected in the soil gas beneath a commercial building housing a contemporary art gallery and studio suite in a Los Angeles neighborhood. A Vapor Intrusion Mitigation Plan using Retro-Coat from Land Science was quickly reviewed and approved by LARWQCB.
August 2023 Land Science Newsletter
Featured Case Study | TerraShield Installation Leads to Development of Animal Welfare Facility
A local animal welfare organization needed a new building and outdoor space to provide a state-of-the-art center for animal care in an urban community. Methane was identified in the vapor phase, requiring mitigation to reduce the vapor intrusion risk. United Consulting specified TerraShield due to its high level of protection against contaminant vapor intrusion. With the building protected from vapor intrusion by TerraShield, the facility workers, prospective pet foster parents, and the animals are ensured a safe breathing environment.
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Client Spotlight | Spencer Cox, United Consulting
If you ask Spencer Cox, Project Environmental Specialist at United Consulting, a multidiscipline engineering consulting firm and valued Land Science® partner, what his primary role is at work, you’re likely going to get more than just one answer. That’s because in addition to performing due-diligence assessments on residential, commercial, and industrial properties, he also negotiates properties through the Georgia Brownfields program, conducts Corrective Action Plans for hazardous waste facilities, and performs a host of other important responsibilities that impact the success of United’s diverse client base.
eBook | 6 Reasons to Specify a VI Barrier Offering the Highest Level of Chemical Resistance
For properties where there is underlying contamination that cannot be removed and represents a serious risk to human health, it is important to have a solution that can effectively mitigate that risk and provide both building occupants and owners assurances that they are shielded from physical and financial harm. TerraShield offers a higher level of protection compared to any vapor barrier system available today. With industry-leading standards for installation along with robust warranty options, there is simply no better option on the market for industrial, commercial, or residential vapor intrusion mitigation.
Featured Video | 1.2 Million Square Foot MonoShield Application at Historic Steel Manufacturing Site
On the site of one of the largest former steel mills in the world, a large logistics center redevelopment project is underway. The development promises to transform the historic site into 15 million square feet of warehousing space and bring the community anywhere from 5,000 to 10,000 new jobs. Working with the environmental consultant and the developer, Land Science, a division of REGENESIS, was chosen to incorporate the MonoShield contaminant vapor barrier system to preemptively address any potential vapor intrusion issues.
Technical Data Sheet | The Fastest Vapor Barrier to Install is Also One of the Safest
MonoShield® is a single-layer, underslab contaminant vapor barrier offering superior chemical resistance, durability, and ease of installation versus traditional sheet membranes. The patented MonoShield system is composed of an innovative metalized composite geomembrane, MonoBase™, that is seamed together during installation with Nitra‑Core™, a spray‑applied, nitrile-modified asphalt. MonoShield is an optimal mitigation solution to reduce liability for large, slab-on-grade buildings where installation speed is critical, for sites with a low-level vapor intrusion (VI) risk, or for use in conjunction with active sub-slab venting systems.
Visit Our Training Library Today!
At Land Science, we know many environmental firms are investing time to focus on staff training to get up-to-date on new technologies and regulations. We have prepared a library of pre-recorded webinars available on our website at no charge. Topics include vapor intrusion regulations and mitigation. We will also provide certificates of attendance for any webinar viewed upon request by emailing marketing@regenesis.com
Have a Vapor Intrusion Project? Get Started Today!
To receive a custom vapor intrusion solution, please call 949.481.8118 or visit landsciencetech.com/contact-us
TerraShield Installation Leads to Development of Animal Welfare Facility
Case study highlights:
- Terra-Shield chosen due to its high chemical resistance
- Successful contaminant vapor intrusion mitigation allows for new state-of-the-art animal center to open to the public
- Installation was seamless due to the use of NitraCore, TerraShield’s spray-applied nitrile-modified asphalt
A local animal welfare organization needed a new building and outdoor space to provide a state-of-the-art center for animal care in an urban community. United Consulting, a multi-disciplinary engineering and environmental consulting firm based in Georgia, was engaged to develop a plan for remediating the soil impacts and assessing vapor intrusion risk at a prospective site. Methane was identified in the vapor phase, requiring mitigation to reduce the vapor intrusion risk. United Consulting specified TerraShield due to its high level of protection against contaminant vapor intrusion. With the building protected from vapor intrusion by TerraShield, the facility workers, prospective pet foster parents, and the animals are ensured a safe breathing environment.
June 2023 Land Science Newsletter
Featured Video | TerraShield Effectively Protects Future Residents from Contaminant Vapor Intrusion
This video features a former industrial site in Lansing, Michigan, where a multi-family and senior residence community were being developed. Soil and groundwater were contaminated as a result of historic activities including chrome plating, underground storage tanks, automotive repair, a junkyard, and welding operations. TerraShield was chosen to mitigate potential vapor intrusion, offering the highest level of chemical resistance available on the market today, providing protection against vapor intrusion risk from contaminants like petroleum and Trichloroethylene (TCE). Installing TerraShield ensures the safety of indoor air for future residents of the development while meeting the regulatory requirements of the Michigan Department of Environment, Great Lakes, and Energy (EGLE). Watch the video to learn more about this innovative vapor barrier technology.
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Video | Superior Chemical Resistance Over Any Vapor Barrier on the Market Today
The Land Science research and development team has invested years in developing the TerraShield vapor barrier system, which delivers orders of magnitude higher vapor intrusion protection as compared to the leading vapor barrier system. The new, innovative, metalized material and multiple layers of protection are key to the increased performance. The R&D team also improved on the core material, incorporating nitrile, known for its chemical resistance, as a key component. The result is 100 times more effective protection compared to existing vapor barriers in laboratory tests.
eBook | 6 Reasons to Specify a VI Barrier Offering the Highest Level of Chemical Resistance
For properties where there is underlying contamination that cannot be removed and represents a serious risk to human health, it is important to have a solution that can effectively mitigate that risk and provide both building occupants and owners assurances that they are shielded from physical and financial harm. TerraShield offers a higher level of protection compared to any vapor barrier system available today. With industry-leading standards for installation along with robust warranty options, there is simply no better option on the market for industrial, commercial, or residential vapor intrusion mitigation.
Project Snapshot| MonoShield Installed Faster and at a Significantly Lower Cost than System with Taped Seams
Sawyer Yards is an apartment community located in Houston’s vibrant Arts District neighborhood. Chlorinated solvents were detected in soil gas, posing a potential vapor intrusion risk to future residents. The original vapor mitigation system (VMS) specification called for a single-layer barrier with taped seams. However, the building’s foundation contained many utility penetrations and terminations, requiring numerous taped seams. These taped seams significantly reduce application efficiency and ultimately result in potential barrier weak points. In contrast, MonoShield® incorporates a spray-applied nitrile-advanced asphalt latex, offering superior application efficiency with unmatched chemical resistance.
Brochure | Why Smart Developers are Choosing MonoShield
MonoShield is a chemically resistant and easy-to-apply barrier specifically designed as a preemptive solution for vapor intrusion at brownfield redevelopment sites. It is backed by unparalleled design support, standard industry warranty, and a network of certified applicators who can ensure quality installation. To learn why developers are increasingly turning to MonoShield for a fast and cost-effective preemptive vapor mitigation solution, download the brochure.
Proudly Announcing Ryan Miller as Director of Land Science
We are excited to announce the appointment of Ryan Miller as the new Director of Land Science. Ryan returns to Land Science in a new role, leading the Land Science team on a national level, and his significant background and experience in the industry make him a valuable addition to the already strong Land Science team of vapor intrusion technical professionals. Ryan is known to foster a culture of innovation, excellence, and continuous improvement. With change comes growth, and the Land Science team looks forward to offering even greater support to our clients by delivering world-class products and continued innovation to provide industry- leading protection against contaminant vapor intrusion.
Have a Vapor Intrusion Project? Get Started Today!
To receive a custom vapor intrusion solution, please call 949.481.8118 or visit landsciencetech.com/contact-us
Logistics Center Selects MonoShield to Protect Occupants Long-Term
Case study highlights:
- Developer saves time and money, selecting an easier to install vapor mitigation solution offering more protection long-term
- MonoShield provides unmatched durability, ease of installation, and superior chemical resistance compared to thin-mil plastic barriers
- Selecting Edgeboro to install MonoShield is a bottom-line cost-savings and investment-protection decision
Scheduling delays and continuous repairs to a 20-mil plastic vapor barrier at a major new logistics complex in New Jersey prompted the project team to change course, engaging Edgeboro, one of the region’s most experienced vapor barrier installation specialists. Edgeboro introduced the development team to Land Science and Monoshield. The MonoShield contaminant vapor barrier system offered the promise of performance and was proven to stand up to heavy construction activities. In addition, the installation speed and the key benefits provided by MonoShield led the developer to select Edgeboro and MonoShield for the rest of the buildings planned.
April 2023 Land Science Newsletter
Featured Video | Warehouse Made Safe Against Contaminant Vapors by Retro-Coat Application
A property developer was preparing a former furniture warehouse in an urban industrial area in Los Angeles, CA for a new tenant. Based on the recommendation of Farallon Consulting, a full-service environmental consulting firm specializing in brownfield redevelopment, the property owner opted to preemptively mitigate vapor intrusion risk by installing Retro-Coat, a passive vapor mitigation system for existing buildings. The installation of Retro-Coat was safe, fast, and efficient due to the application by certified Land Science installer, Pacific Coast Contracting. State and local regulatory bodies were also on-board with this approach, given their familiarity with Retro-Coat as a proven, effective vapor mitigation barrier.
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Client Spotlight | Kathy Lehnus, Senior Geologist, Farallon Consulting, LLC
Kathy Lehnus, a Senior Geologist with Farallon Consulting, LLC, brings depth and an impressive range of experience within the environmental remediation space to her role with the firm. With more than 27 years managing environmental consulting projects, Kathy has excelled in a variety of roles. In her current role, she specializes in projects focused on transactional investigation and regulatory oversight. In addition, she performs characterization-level Phase I Environmental Site Assessments with focused subsurface investigations, including vapor intrusion evaluations, which are designed to provide a wide array of data options within workable budgets and deliverable time frames.
Product Brochure | Retro-Coat
The Retro-Coat Vapor Intrusion Coating System is a complete product line that consists of chemically resistant materials to properly protect existing structures from the threat of vapor intrusion without the need for additional concrete protection. Developed by the Research and Development team at Land Science, the Retro-Coat system has been subjected to rigorous testing procedures to prove its ability to combat the most aggressive chemical vapors. Retro-Coat is proven effective to protect against vapor intrusion from chlorinated solvents and petroleum hydrocarbons.
eBook | 10 Reasons to Consider Retro-Coat to Protect Your Property Investment
Retro-Coat is a chemically resistant coating that can be applied to various surfaces including, concrete, concrete masonary units (CMU), and brick, preventing vapor from passing through cracks and pores in concrete and into occupied spaces. It is resistant to trichloroethylene (TCE), perchloroethylene (PCE), and petroleum hydrocarbons, common contaminants that can often be found beneath building structures. It contains no volatile organic compounds (VOCs) and has a fast curing time which minimizes disruption to ongoing businesses. Download the ebook to learn more.
Project Snapshot | Leading Hotel Chain Moves Forward with Brownfield Site Construction Following Installation of Vapor Barrier System
A leading hotel brand broke ground on a new residential-styled suite hotel in an expanding commercial district in Ohio. The first of its kind in the state, the brownfield site required a safe and effective vapor barrier system to mitigate soil gas vapor contaminants from former industrial activities in the area, including spilled chlorinated solvents and petroleum hydrocarbons. The environmental consultant proposed installing a TerraShield vapor barrier system to eliminate the potential exposure risk of building staff and guests to these vapors. In addition to providing superior chemical resistance, TerraShield does not require taped seams which markedly improves the installation efficiency. The Land Science certified applicator installed TerraShield successfully, maintaining the schedule and allowing the hotel to proceed toward its grand opening.
Product Brochure | TerraShield – Superior Chemical Resistance Over any Vapor Barrier on the Market Today
The Land Science research and development team of scientists have invested years in developing the TerraShield vapor barrier system, which delivers orders of magnitude higher vapor intrusion protection as compared to the leading vapor barrier system. The new, innovative, metalized material and multiple layers of protection are key to the increased performance. The R&D team also improved on the core material, incorporating nitrile, known for its chemical resistance, as a key component. The result is a 100 times more effective protection as compared to existing vapor barriers in recent laboratory tests.
Webinar Now Available | Effective Design and Implementation of Vapor Intrusion Mitigation Systems for New Construction
In this webinar, we were pleased to have special guest speaker Tom Hatton, CEO of Clean Vapor LLC. His presentation discussed successfully designing and implementing Vapor Intrusion Mitigation Systems (VIMS) for new construction. He was joined by Jordan Knight, National Sales Manager for Land Science, who discussed advanced vapor intrusion mitigation system technologies. The free recording is now available.
Upcoming Event | Land Science Vapor Barrier Technologies Featured at TENSOS 2023
Land Science will be in attendance at the upcoming 2023 Environmental Show of the South on May 10th – 12th in Chattanooga, TN, the largest, most comprehensive and diverse environmental education opportunity in Tennessee. Land Science’s suite of leading vapor barrier technologies will be featured in presentations at the event. If you will be attending the event, don’t miss Breakout Session 4.1, featuring Brian Kvam, Principal of Brownfields and Redevelopment at Stantec, who will present A Case Study in Residential Adaptive Reuse. Also make sure to attend Breakout Session 6.4, which will include a presentation on Vapor Intrusion Best Practices, by Jim Fineis, President of Total Vapor Solutions, LLC. To learn more about the conference and the environmental technical program, visit the link below.
Upcoming Event | Request a Meeting at TENSOS 2023!
Land Science National Sales Manager Jordan Knight is a member of the steering committee, and Southeast District Technical Manager, Jason Wilt, will be in attendance at the upcoming 2023 Environmental Show of the South (TENSOS) on May 10th – 12th in Chattanooga, TN. Jordan and Jason are excited to meet with the environmental community to share the latest guidance and developments related to vapor intrusion barrier technologies, implementation, and QA/QC best practices. To request a meeting at the event to discuss a vapor mitigation solution for your site, visit the link below.
Have a Vapor Intrusion Project? Get Started Today!
To receive a custom vapor intrusion solution, please call 949.481.8118 or visit landsciencetech.com/contact-us
Client Spotlight: Kathy Lehnus, a Senior Geologist with Farallon Consulting, LLC
Kathy Lehnus, a Senior Geologist with Farallon Consulting, LLC, brings depth and an impressive range of experience within the environmental remediation space to her role with the firm. With more than 27 years managing environmental consulting projects, Kathy has excelled in a variety of roles, including site investigation and remediation, regulatory compliance, staff training, new business development, and much more. She begins, “I have had the pleasure of working in a variety of positions that include both the public sector and EPA contracts. I’ve also worked at national and international private firms, giving me a wide array of experience in expertise and approach.”
Lehnus joined Farallon, a leading environmental consulting firm based on the West Coast, just over 3.5 years ago. In her current role, she specializes in projects focused on transactional investigation and regulatory oversight. In addition, she performs characterization-level Phase I Environmental Site Assessments with focused subsurface investigations, including vapor intrusion evaluations, which are designed to provide a wide array of data options within workable budgets and deliverable time frames.
She continues, “I have also managed investigation and remediation projects led by the California Department of Toxic Substances Control and California Regional Water Quality Control Boards. Coordinating multifunctional teams to ensure projects remain on time and on budget, while obtaining regulatory approvals for project redevelopment milestones is always key when working with these regulatory bodies. Additionally, I provide technical input to owners and counsel for identifying potential risks associated with purchasing and redeveloping contaminated properties.”
Lehnus became interested in environmental remediation in her youth while living in western Massachusetts, where she became enamored with the beauty of the Adirondacks. “I became involved in ecology groups looking to ‘go green’ before it was even a catch phrase! Studying environmental science and geology in college was a natural next step.” She laid the groundwork by earning a BS in Environmental Science from the University of Massachusetts at Amherst, where she also received a BA in Geology. She went on to earn a Master of Science in Geology at the University of Connecticut and is licensed in both Connecticut as Licensed Environmental Professional and in California as Professional Geologist.
While she enjoys many aspects of her work, servicing clients ranks at the top. She shares, “I really enjoy working with clients and providing them with the solutions they need to help them be successful in their tasks.” Her desire to help clients via close collaboration dovetails nicely with what she says is a key future goal at Farallon. She continues, “Farallon wants to continue to provide clients with high quality and technically creative solutions, while building strong and enduring relationships. The staff at Farallon collaborate with each other to leverage expertise in a variety of fields to provide the very best for our clients. A good example of this would be when preparing a cost estimate for a client who wants to purchase contaminated property. Farallon can rely upon our Phase I due diligence experts who have discovered and followed leads to truly understand previous use and potential release areas. This is a skill set not commonly offered by other consultants, many of whom will provide low-cost, “check the box” Phase I work, while simply seeking to please clients by not pointing out problems, instead of identifying issues and providing reasonable solutions.”
With regard to working with Land Science, Lehnus appreciates the partnership Farallon has developed. “From offering multiple options to being part of the scheduling process, Land Science helps me get the job done. I recall one recent example where a client purchasing an existing distribution warehouse requested that we provide them with a Phase I ESA as part of their typical purchasing procedures. Although the building was only used in the past as a food storage warehouse, we identified a historical map that showed a carpentry shop and paint booth in the building that appeared to be associated with constructing crates for food transport. Although there was a short due diligence timeframe, we were able to mobilize the following week and collect sub-slab soil vapor samples beneath the building pad. We identified chlorinated volatile organic compound impacts in one area of the building, which led to air sampling that identified potential exposure threats throughout the building. We then provided the client with a cost estimate for mitigating impacts, which we implemented immediately upon their purchase to ensure the protection of occupants until additional work could be completed. Later, we applied Retro-Coat® to the floor to further mitigate air impacts.”
She continues, “Working with Land Science helped provide us with the ability to sample in a quick timeframe and develop creative mitigation solutions, which in turn allowed the client to move forward with the purchase and lease back immediately.” In terms of specific Land Science products, Retro-Coat continues to be Farallon’s “go to” solution for its clients due to its outstanding track record on performance. Kathy adds, “As part of our evaluation for determining the best post-construction vapor barrier for an existing dry cleaner, we evaluated several epoxy coatings as options to apply to the existing floor. Based on discussions with Land Science, the Retro-Coat barrier had been used for several sites with regulatory oversight as the proven method of mitigation.”
Living in Mission Viejo with her husband, (who also happens to be a Geologist) and their three teenage kids, Lehnus finds time away from work to enjoy socializing with friends over a glass of wine, while discussing “what makes people tick and the earth turn- geology pun intended!”. She adds, “For relaxation, when I’m not indulging in binge-watching guilty pleasure TV, you’ll find me reading a good book.”
When asked how she would encourage others to join her field of study, she points to the diverse range of opportunities that exist, depending on one’s interest. She concludes, “Environmental consulting requires us to stretch in all directions- from geology, biology and chemistry, to understanding the legal language of regulations, to understanding clients’ needs and being able to explain technical findings to them. We also need to create investigation scopes, prepare and maintain budgets, keep subcontractors in line, and mentor and manage fellow staff members. Every day and every project are different and challenging!
Land Science is proud to have Kathy Lehnus, Sr. Geologist with Farallon Consulting, LLC, as a valued client and partner in environmental remediation, and they appreciate her diversified experience and leadership in providing successful remediation and mitigation outcomes for Land Science and its clients.