Herrera’s design engineers use a comprehensive approach that includes screening of alternatives, treatability studies, cost estimation, contracting, and construction oversight to facilitate the installation and operation of remedial systems.Our remedial design experience has focused on biological remediation systems, interception trenching, free-product recovery, bioventing, soil vapor recovery and distribution systems, drainage control, and control systems for stormwater runoff and runon. Our technical staff is highly qualified in both the design of remediation systems and the field implementation of these systems, including oversight of construction, operation and maintenance activities, and followup monitoring to evaluate cleanup.

Key Projects

• Pacific Sound Resources Wood Treatment Facility Demolition Design, Seattle, Washington – Port of Seattle
• South Precinct Police Station Fuel System Upgrade and Remedial Design, Seattle, Washington – City of Seattle, Fleets and Facilities
• Interim Action, Feasibility Study, and Cleanup Design for Asphalt Plant – confidential client, Yakima, Washington
• Contaminated Dry Well Removal Design and Oversight in Moses Lake, Washington – U.S. General Services Administration
• Transfer Station Tank Closure and Fuel System Design in Seattle, Washington – Seattle Public Utilities, City of Seattle
• Design and Construction Management Support for PCB Remediation Project at the Juneau Federal Building, Juneau, Alaska – U.S. General Services Administration