Introduction to Land Science® Video

Introduction to Land Science® Video

Land Science® specializes in developing and providing industry leading products for vapor intrusion mitigation.

Full Video Transcript
As experts in the field of vapor intrusion mitigation, Land Science works with leading engineering firms, environmental consultants, building owners, and real estate developers to offer safe and effective vapor intrusion mitigation solutions in the redevelopment of Brownfield sites. As a wholly owned division of REGENESIS, a recognized leader in the environmental industry, Land Science has been at the forefront of vapor intrusion mitigation. With vast experience and expertise in vapor intrusion mitigation, industry leading advanced technologies, world class R&D, local resources and support, and combined resources in environmental remediation, Land Science has a unique advantage over other vapor intrusion solution providers. In addition to its own research and science-based product development, Land Science benefits from its close association with REGENESIS by aligning teams and managing a broad range of vapor intrusion concerns and remediation issues. These products and solutions include patented vapor mitigation and environmental remediation technologies supported by the highest levels of scientific research.

Effective vapor intrusion mitigation can be accomplished using a range of approaches, including vapor intrusion barrier and coding solutions alone. Or combined with passive or active venting technologies. These turnkey solutions physically block contaminated vapor from entering the structure, safely and effectively protecting building occupants. Land Science is dedicated to developing, testing, and providing advanced technologies for sustainable land development. Our cost-effective industry leading technologies include Geo-Seal Vapor Intrusion Barrier, Retro-Coat Vapor Intrusion Coating, and Vapor-Vent Vapor Collection Systems, offering engineering firms and real estate developers viable solutions to address challenges involved in the development of Brownfields today. We work with a number of industries and clients across the US and Canada providing a safe and effective solution for vapor intrusion mitigation. To learn more about Land Science, please visit www.landsciencetech.com.

Land Science – Retro-Coat™ Vapor Intrusion Coating Application Video

Land Science – Retro-Coat™ Vapor Intrusion Coating Application Video

Vapor intrusion can cause significant uncertainty for building owners. Retro-Coat™ provides a simple and proven solution to a complex problem. Applying Retro-Coat can provide a building owner with long-term assurance that the vapor intrusion risk has been successfully mitigated, while at the same time, reducing the overall mitigation cost.

California DTSC Updates PCE Screening Levels

California has issued revised screening levels (SL) for vapor-phase tetrachloroethylene (PCE). On September 8, 2016, California’s Office of Environmental Health Hazard Assessment (OEHHA) adopted an updated inhalation {Cancer} unit risk (IUR) factor for tetrachloroethylene (PCE). Updating the IUR also created revised recommended residential and commercial/industrial ambient air and soil gas screening levels (SL) for PCE. The Department of Toxic Substances Control’s (DTSC’s) revised PCE SLs are slightly more conservative than previous and remain below the United States Environmental Protection Agency (USEPA) SL for PCE. The USEPA’s SL are higher due to the use of a less conservative IUR (2.6E-07) than DTSC’s (6.1E-06) to derive its current SL; however, the USEPA acknowledges that the general IUR should not be used in all cases for evaluations and that “A number of uncertainties underlie the cancer unit risk for PCE…” Learn more by downloading the US EPA’s Chemical Assessment Summary of PCE here.

Below is a table of the former and revised DTSC SL’s.

California DTSC updated PCE screening levels

On October 17, 2016, California’s DTSC Human and Ecological Risk Office (HERO) issued a response to inquiries associated with the PCE revised IUR and SL. Refer to this memorandum for further details associated with the updated IUR and SL’s. These SLs should be used in conjunction with the June 2016 Human Health Risk Assessment (HHRA) Note 3. DTSC indicates that a subsequent update to the HHRA Note 3 will be issued December 2016/January 2017, which will include the changes to the PCE toxicity criteria.

The exposure and risk factors for PCE and other chlorinated constituents, within the vapor phase, continue to be at the forefront of many regulatory agency mandated updates and often generate several topics of discussion. The overall trend continues to be conservative when evaluating the risk of these constituents. Ultimately, directing many site evaluations towards pre-emptive mitigation approaches, such as vapor intrusion are highly recommended to comply with increasing regulatory guidelines. Have further questions? Contact Land Science as our team of scientists and engineers are dedicated to vapor intrusion and mitigation related issues and developing solutions for sites across the US.

An Introduction to Retro-Coat™ Vapor Intrusion Coating from Land Science Video

https://www.youtube.com/watch?v=miqcWLl0xDc

An Introduction to Retro-Coat™ Vapor Intrusion Coating from Land Science Video

Vapor intrusion can cause significant uncertainty for building owners. Retro-Coat™ provides a simple and proven solution to a complex problem. Applying Retro-Coat can provide a building owner with long-term assurance that the vapor intrusion risk has been successfully mitigated, while at the same time, reducing the overall mitigation cost.

Full Video Transcript
Retro-Coat is a chemically resistant coating, specifically designed to mitigate contaminant favor intrusion into existing structures. Apply directly to the existing concrete slab. Retro-Coat is specifically formulated to be resistant to chemicals of concern, commonly found in urban environments. These chemicals include PCE, TCE, and Benzene. The two-part application process ensures human health will be protected.

A former manufacturing facility in Los Angeles was being revitalized for use as a showroom and warehouse for an entertainment company. Retro-Coat was applied to the concrete slab of the facility to mitigate potential vapor intrusion risk. To prepare the surface for the Retro-Coat application, the concrete must first be shot-blasted to open the pores of the concrete and provide a rough surface.

Retro-Coat gel is applied to repair cracks in concrete imperfections. When complete, all existing cracks are repaired and sealed to eliminate the vapor pathway. The Retro-Coat primer is applied to the concrete surface to protect against water vapor intrusion and to prep the surface for Retro-Coat coating.

Retro-Coat is applied using a squeegee to retain a nominal thickness of 20 mls. The surface is then finished using a roller brush. Retro-Coat is specifically formulated to mitigate PCE, TCE, and Benzene vapors. It can be applied to mitigate a wide variety of building such as former industrial facilities, office buildings or any other type of structure.

Designed to withstand high traffic areas, Retro-Coat can also be customized to achieve almost any desirable look. Additionally, carpet, laminate, and tile floors can also be placed directly over Retro-Coat.

For more information on how Retro-Coat can be used to mitigate vapor intrusion risk, visit www.landsciencetech.com