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Excavation Observation with No Further Action Determination

Excavation Observation with NFA Determination

Farallon assists client in obtaining a no further action determination during property redevelopment

Farallon was engaged by an established client to perform environmental due diligence at a property in downtown Seattle.

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During the Phase II subsurface investigation at the property, Farallon identified shallow areas impacted by petroleum and/or historical fill material. Farallon subsequently completed a site characterization to prepare for a remedial excavation during property development activities.

Farallon's preparations for the remedial excavation allowed for a permanent solution that was in accordance with Washington State Model Toxics Control Act Cleanup Regulation requirements and allowed the client to apply for a No Further Action determination without delay.

During the remedial excavation, a previously unknown underground storage tank was uncovered at the property. Farallon relied on extensive previous experience to quickly provide additional support for sampling and tank closure documentation. When low concentrations of petroleum hydrocarbons were detected soil underneath the tank, Farallon coordinated with the excavation contractor to remove the additional soil. Farallon's adaptive and coordinated response enabled the property development schedule to stay on track.

"Integrating our client's plans for the property with the remedial excavation allowed for an effective, timely solution," said Suzy Stumpf, Senior Design Engineer. "We were fully equipped to overcome unexpected challenges and deliver site closure."

Expertise

Services Utilized

Phase II Subsurface Investigations

We conduct thorough evaluations of subsurface conditions of every property to identify environmental liabilities, including potential contaminants from adjacent properties. We consistently demonstrate proficiency in assessing and...

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Meet Our Experts

headshot of J. Riley Conkin J. Riley Conkin Principal Geologist

Riley is a licensed geologist and licensed hydrogeologist in Washington with more than 25 years of experience in contaminant hydrogeology and cleanup. His expertise includes investigation and delineation of...

Stuart Brown Stuart Brown Associate Environmental Scientist

Stuart has more than 13 years of experience in environmental consulting. His project experience includes construction observation and project management on sites throughout the west. Stuart has conducted...

headshot of Suzy Stumpf Suzanne Stumpf Principal Design Engineer

Suzy has more than 15 years of experience in the environmental consulting and engineering fields. Her experience includes remedial investigation/feasibility study analysis, site characterization, vapor intrusion...

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