Seattle, Washington
TRC was retained by a commercial property owner in the Belltown area of Seattle to investigate the lateral and vertical extent of diesel-range organic compounds in soil, groundwater, and indoor air following a release from a home heating fuel tank beneath and adjacent to a large active apartment building. The Client sought TRC’s services after the previous consultants unsuccessfully tried to remediate the site using unnecessarily costly remedial techniques prior to clearly defining a path towards regulatory closure.
TRC used several low-cost, Ecology-accepted strategies to develop alternative cleanup levels that were still protective of human health and the environment. Aquifer testing to determine non-potability of the contaminated aquifer in conjunction with the development of less-stringent MTCA Method B Cleanup Levels were evaluated to allow for substantially less active remediation to achieve closure. While collecting the data necessary to complete the remedial investigation, TRC collected additional data to support that approach, resulting in considerable cost savings to the Client. Low-cost, effective engineering controls were selected to prevent exposure to workers in the basement of the apartment building.
Related Projects
Discover the success we’ve had with helping our clients execute major projects and make a meaningful impact on their local communities.
E-Waste Remediation at Former Recycling Facility
3D Visualization of PCE in Groundwater using Earth Volumetric Studio (EVS) Software
Creating Solutions: Organic Disposal Reduction Status Impact Reporting
PFAS Air Emissions Testing Methodology for US EPA
Long-term Comprehensive Management of Environmental Programs for Beacon Capital
Connecticut Department of Transportation Environmental Consulting Services
Sharing Our Perspectives
Our practitioners share their insights and perspectives on the trends and challenges shaping the market.
TDU Webinar- Bioventing Residual LNAPL Plumes
August 27, 2024
TRC’s expert discusses the basics of hydrocarbon bioventing and bioventing system and well design. Two case studies are also provided to demonstrate examples of bioventing source remediation and the installation of a bioventing system at a refinery and a bulk fuel farm.
Microplastics ITRC Guidance Document and Training Available Soon!
February 23, 2023
Microplastic particles have been found in nearly every corner of the globe, but health effects and toxicity are only beginning to be understood. Because of their ubiquitous nature, microplastics present a challenge in both accurate sampling and source attribution. Microplastics are emerging as an environmental issue that regulators and industry will be increasingly focusing on in the coming years.
Odor Evaluation Services
February 23, 2023
TRC is nationally recognized as an expert in the field of odor measurement, identification, modeling and control engineering. This presentation includes an overview of odor properties, odor evaluation, modeling and odor thresholds and outlines the four sensory properties: detectability, intensity, character and hedonic tone.
EPA Announces $2 Billion in Funding to Address Emerging Contaminants in Drinking Water
February 14, 2023
Environmental Protection Agency Administrator Michael Regan announced $2 Billion in infrastructure funding to help the nation’s rural water supplies.
Metals 101
February 8, 2023
Metals are naturally occurring elements in the Earth’s crust that enter the environment through natural processes. They can be found in groundwater, soil and sediment. The trophic transfer of these elements in aquatic and terrestrial food chains has important implications for wildlife and human health.
Biotic and Abiotic Reduction to Achieve Groundwater Compliance at CCR Sites
November 22, 2022
TRC conducted two case studies to test different EA strategies. In both studies, chemical and biological reduction to stabilize metals at former CCR sites were evaluated.
Implementing bioremediation at environmental cleanup sites: TRC experts weigh in at leading industry conference
May 17, 2021
TRC experts make several presentations at the Battelle conference about innovative approaches they have developed for implementing and monitoring bioremediation and the use of naturally-occurring or deliberately-introduced micro-organisms to break down environmental pollutants.
Iron sulfide: The “miracle mineral” in environmental remediation
April 26, 2021
Whether it’s treating an arsenic spill at a railroad site in Wisconsin or releases of chromium and other metals or metal-cleaning solvents at manufacturing sites in California, New Jersey, and South Carolina, a mineral marrying iron and sulfur -iron sulfide- is emerging as a powerful and versatile tool in the environmental remediation toolbox.
TRC Awarded a Yahara WINS Grant
August 28, 2020
TRC was recently awarded a Yahara WINS grant to develop a pilot scale simple aeration method for removing phosphorous from the discharge of manure digesters. The grant application was developed and submitted by: Bob Stanforth, Alyssa Sellwood, Mike Ursin, Ted O’Connell, Ken Quinn, and John Rice, who are members of multiple TRC CORE teams.
Ecological Risk of PFAS from AFFF-Impacted Sites
June 30, 2020
The facts on evaluating exposure to wildlife
Are You Prepared for 2024 TSCA Chemical Data Reporting?
October 9, 2023
Chemical Data Reporting (CDR), like the Olympics, occurs every four years, and then most facilities move on to more pressing environmental, health and safety (EHS) matters.
EPA Proposed PFAS Reporting Requirement
July 29, 2021
New proposed rule would require all manufacturers and importers to report any amount of PFAS onsite
New Jersey Implements Landmark Environmental Justice Regulations
August 2, 2023
A new landmark Environmental Justice (EJ) law is now effective in New Jersey following a lengthy rulemaking process surrounding the New Jersey Department of Environmental Protection’s (NJDEP) Administration Order (AO) No. 2021-25. It is the first rule of its kind and the strongest EJ regulation in the nation.
New Phase I ESA Standard Will Affect Environmental Due Diligence
January 25, 2022
After years of review, revisions and discussions, the new ASTM E1527 Phase I Environmental Site Assessment (Phase I ESA) standard has been published. The new standard includes updates to definitions, clarifications on processes and requirements, and guidance for emerging contaminants.
Managing EHS & ESG Risks Through Integrated Systems Today and Beyond
July 22, 2021
It has been more than 50 years since the development and establishment of the federal Environmental Protection Agency (EPA) and the federal Occupational Safety & Health Administration (OSHA) which were formed to protect our environment and workplaces across the United States. Significant laws, policies and regulations followed to establish the “regulatory programs” that all applicable businesses and entities must address and meet to ensure these compliance-driven legislative programs would create a foundation to protect our society.
A billion-dollar BrewDog: TRC advises private-equity client on major craft beer investment deal
April 19, 2021
When one of America’s leading private-equity companies decided recently to buy a stake in one of the world’s fastest-growing craft-beer brewers, the deal team sought advice from TRC.
TRC Announces Collaboration with Greenstone Reinforcing Integrated ESG, Sustainability and Climate Risk Solutions
June 26, 2020
Renewable energy developers face an increasingly fast moving and competitive market. While opportunities abound, bringing projects online to meet demand comes with many technical and administrative challenges. In this episode of TRC Talks, our experts discuss how TRC’s fully integrated renewables delivery platform is helping move projects from concept to completion, faster and more efficiently.
COVID-19 and Implications for ESG Investing
June 3, 2020
This global pandemic has exposed business vulnerabilities and recalibrated material Environmental Social and Governance factors for investors.
TRC Brings Environmental Services to Manchester with Second UK Office
March 5, 2020
In continuing to expand our presence in a key British market, TRC is opening our second UK office in Manchester, England