PROJECTS

Delivering total client satisfaction is the foundation of all of our projects. Browse this section to learn about projects we have completed to help our clients achieve their site and portfolio goals. Narrow your search by service, market, or region to view our experience on sites similar to yours.


Groundwater Control System Design & Installation

Marine Terminal
California

Services Provided

Market



Following a series of investigations, it was determined that a portion of an active refinery located in a sensitive marine setting was being affected by light non-aqueous phase liquid (LNAPL) and dissolved-phase petroleum hydrocarbons. A remedial action plan had previously been developed and recommended installing a 1,900-foot groundwater interceptor trench to control shallow groundwater. The installation of four recovery wells was also recommended as part of the plan to provide control of deeper groundwater.

Trihydro was asked to finalize the engineering design for the approved plan. During the review, Trihydro identified several important data gaps that reduced confidence in the ability of the chosen remedy to achieve the client’s goals for the site. It was also determined that the proposed remedy would likely interrupt operations significantly and also pose substantial health and safety risks.

Based on these concerns, Trihydro proposed and gained approval to conduct additional field investigation and develop an updated site conceptual model (SCM) to reflect LNAPL distribution and mobility in the area. These additional, focused efforts led to the conclusion that the proposed remedy would not be an effective final solution. Trihydro developed an alternative remedy consisting of a linear series of groundwater extraction wells.  A tidal study and aquifer testing were then performed and groundwater modeling, design, and installation of the 42-well extraction system were completed.
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"The quality of Trihydro's work matches the exemplary nature of the individuals performing them."
- Guillermo J. Silva-Wiscovich, Partner, Morell Bauza Cartagena & Dapena LLC

Trihydro’s success is based on working safely, maintaining high quality, and having strong project managers on the front line. Our considerable technical and regulatory expertise allows us to anticipate challenges, recognize opportunities, and strategically work with you to reach well-defined milestones and clearly defined end-state visions.

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