The regional plume associated with this site threatens numerous public water supply wells. The contaminants of concern include perchlorate and VOCs, primarily trichloroethene (TCE). Boeing currently maintains two pump-and-treat systems operating at about 3,000 gpm.
Strategy-level services include project planning, cost forecasting, and cost management. We also serve as the technical liaison to large stakeholder group and manage or conduct a range of analyses to ensure remedy effectiveness and regulatory compliance.
- Managed remedial investigation, well drilling and design, data analysis, and reporting
- Completed a site-wide feasibility study (FS) and remedial action plan (RAP) for the lead regulatory agencies (Department of Toxic Substances Control and Regional Water Quality Control Board)
- Completed interim RAPs for individual operable units
- Conducted remedial investigations to characterize hydrogeologic conditions and the distribution of contaminants at the site
- Managed and directed expansion of the remedy and monitoring network to increase capture and optimize operations
- Provided technical oversight for the design and construction of extraction wells and monitor wells
- Directed the successful completion of an in situ biotreatment remedy for perchlorate in a primary source area
- Developed comprehensive database of groundwater level and water quality data from over 600 wells nested within 200 boreholes
- Prepared multiple Five-Year Review reports
- Developed and calibrated a multi-layer, transient, flow-and-transport model using MODFLOW, MT3D, and MODPATH to manage and evaluate remedial wellfield effectiveness and contaminant plume capture
- Conducted vadose zone modeling to assess source areas
- Constructed a new model for managing and optimizing the long-term groundwater remedy that will incorporate a 3D Leapfrog model and hydrogeologic data from more than 3,000 wells
- Managed a compliance monitoring and reporting program
- Obtained waste-discharge permits for the source control remedy and ensured permit compliance