M&A saves Boeing about $17 million by demonstrating that a mid-plume remedy was unnecessary.
Client: The Boeing Company- Time frame: 2008–present
- Location: Rancho Cordova, California
M&A staff members Tim Leo and John Laney have worked on this project since 2003. They brought us this client when they joined M&A in 2008. This inactive rocket-testing site is located in the Sacramento area. We currently serve as the lead consultant for strategic planning related to remediation activities for a regional plume that threatens numerous public water supply wells. The contaminants of concern include perchlorate and VOCs, primarily TCE. Boeing currently operates two pump-and-treat systems that pump about 3,500 gpm.
M&A provided oversight for the latter stages of this remedial investigation. In addition to preparing a site-wide Remedial Action Plan (RAP), we developed an interim RAP for the operable unit plume and conducted a feasibility study for a regional remedy.
As part of the regional feasibility study, M&A developed a 3D flow-and-transport model using MODFLOW / MT3D. We also conducted vadose zone modeling to assess source areas.
M&A pilot-tested an in-situ bioremediation system that uses 100-gpm extraction / injection wells to treat perchlorate in the source area. We also designed and tested the extraction wells. To address the regional plume, we not only designed but also optimized a remedial well field.
M&A oversees the site-wide monitoring program and provides technical support for mediation between Boeing, Aerojet, Sacramento County, and local water providers. We also coordinate with a diverse group of stakeholders and interface with regulatory personnel from the State of California’s Department of Toxic Substances Control and Regional Water Quality Control Board. In addition, we have prepared applications for waste discharge permits.
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