Time Oil Seattle Terminal

Client: Cantera Development Group
Floyd|Snider facilitated development and implementation of cleanup actions at the former Time Oil Seattle bulk fuel facility, a brownfield site situated along the shoreline of Salmon Bay.

Overview of Floyd|Snider Contributions

Completion of a data gaps evaluation, supplemental Remedial Investigation (RI) Work Plan, field RI data collection, remedial alternative evaluation, RI Report and Feasibility Study, and Cleanup Action Plan in a significantly compressed time frame of approximately 15 months
Close coordination with the Washington State Department of Ecology (Ecology), to support property transaction and execution of a Prospective Purchaser Consent Decree
Identified a preferred cleanup alternative for a complex site adjacent to a surface water body and supported engineering design and planning and implementation of the cleanup action
Adaptive management post-construction to facilitate maintenance and monitoring in coordination with site redevelopment

Project Summary

Floyd|Snider was retained by Cantera Development Group in mid-2018 to facilitate cleanup and redevelopment of a vacant, 10.

42-acre bulk fuel terminal facility following Time Oil bankruptcy.

In coordination with Ecology, we identified and filled key data gaps for design of a cleanup action and prepared a supplemental RI/FS for site-wide cleanup. The cleanup action included remediation of seven distinct operational areas in upland and shoreline areas of the Site, utilizing a combination of excavation, in situ stabilization, and in situ groundwater treatment to address multiple indicator hazardous substances in soil and groundwater.

The cleanup action development and construction were completed on an expedited timeline to accommodate the anticipated site redevelopment activities. The primary project milestones of the final Prospective Purchaser Consent Decree and construction completion were achieved over a time period of less than 4 years from initial engagement, amid regulatory agency and supply chain disruption caused by the global COVID-19 pandemic.

Floyd|Snider was retained by Cantera Development Group in mid-2018 to facilitate cleanup and redevelopment of a vacant, 10.42-acre bulk fuel terminal facility following Time Oil bankruptcy.

In coordination with Ecology, we identified and filled key data gaps for design of a cleanup action and prepared a supplemental RI/FS for site-wide cleanup. The cleanup action included remediation of seven distinct operational areas in upland and shoreline areas of the Site, utilizing a combination of excavation, in situ stabilization, and in situ groundwater treatment to address multiple indicator hazardous substances in soil and groundwater.

The cleanup action development and construction were completed on an expedited timeline to accommodate the anticipated site redevelopment activities. The primary project milestones of the final Prospective Purchaser Consent Decree and construction completion were achieved over a time period of less than 4 years from initial engagement, amid regulatory agency and supply chain disruption caused by the global COVID-19 pandemic.

Conceptual Site Model

Our Approach

Floyd|Snider worked closely with Ecology and the client throughout the cleanup process to ensure that the cleanup met the dual goals of protection of human health and the environment and property redevelopment.

Our expertise in establishing cleanup standards under the Model Toxics Control Act allowed Floyd|Snider to streamline the cleanup by combining properties that had previously been addressed separately under the Ecology cleanup process into one holistic site, with indicator hazardous substances to define the key contaminants and cleanup areas driving risks to environmental receptors.

Our strategic approach to integrating cleanup and future site use goals included prioritizing remedial technologies such as in situ stabilization to achieve contaminant mass reduction without future operation and maintenance and additionally improve soil geotechnical conditions for future building construction.

Floyd|Snider leveraged our strong teaming relationships to partner with regional experts in the selected remedial technologies, ensuring efficient design and construction of the cleanup action. We continue to coordinate closely with Ecology to adaptively manage long-term monitoring of the site following cleanup action construction, collecting key performance data while minimizing costs.

Project Milestones

2020. Final Prospective Purchaser Consent Decree
2022. Cleanup Action Construction Completion

Our Approach

Floyd|Snider worked closely with Ecology and the client throughout the cleanup process to ensure that the cleanup met the dual goals of protection of human health and the environment and property redevelopment.

Our expertise in establishing cleanup standards under the Model Toxics Control Act allowed Floyd|Snider to streamline the cleanup by combining properties that had previously been addressed separately under the Ecology cleanup process into one holistic site, with indicator hazardous substances to define the key contaminants and cleanup areas driving risks to environmental receptors.

Our strategic approach to integrating cleanup and future site use goals included prioritizing remedial technologies such as in situ stabilization to achieve contaminant mass reduction without future operation and maintenance and additionally improve soil geotechnical conditions for future building construction.

Floyd|Snider leveraged our strong teaming relationships to partner with regional experts in the selected remedial technologies, ensuring efficient design and construction of the cleanup action. We continue to coordinate closely with Ecology to adaptively manage long-term monitoring of the site following cleanup action construction, collecting key performance data while minimizing costs.

Project Milestones

2020. Final Prospective Purchaser Consent Decree
2022. Cleanup Action Construction Completion

Conceptual Site Model Cross-Section

Project Team

Floyd|Snider
CRETE Consulting, Inc.
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Floyd | Snider has prepared numerous figures, tables, and graphs interpreting results for a complex site with various contaminants, and the visuals prepared significantly help explain contaminant distribution both horizontally and vertically. Additionally, Floyd | Snider’s detailed data analysis was simplified visually, assisting with the overall understanding of source areas at the site.

Kim Hempel, Senior Project Manager, Pioneer Engineering & Environmental Services, LLC