Bainbridge Island, Washington
TRC was retained in 2005 to evaluate the status of the Island Center Texaco site on Bainbridge Island and to make recommendations for moving the site toward regulatory closure. A historical release of gasoline fuel impacted soil, shallow groundwater, and the deeper aquifer at the Texaco station and at adjacent properties to the west. TRC conducted a Remedial Investigation (RI) and Focused Feasibility Study (FFS) to characterize the nature and extent of soil and groundwater impacts and develop a remedial approach.
The FFS identified LNAPL removal with air sparging (AS) and soil vapor extraction (SVE) as the remedial alternative appropriate for the site. TRC installed the product recovery equipment and AS/SVE wells and conducted pilot tests to determine the effectiveness of the selected remedial alternative. The pilot tests were successful and the site is currently being remediated with the selected remedial alternative.
The site is currently moving toward regulatory closure through the Washington State Department of Ecology’s (Ecology’s) Voluntary Cleanup Program (VCP).
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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
