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Environmental & Geotechnical


RSCS is an industry expert for dealing with NORM and technically enhanced NORM (TNORM) from decommissioning experience, internal dosimetry evaluations, and a wide range of projects.


RSCS provides turn-key groundwater investigation, monitoring, remediation and modeling services. Our focus is on radiological contaminants, however our team is trained and qualified to address any environmental contaminant of concern.  We are familiar with facility operations that involve the use, transport and storage of radioactive materials including spent fuel pools, reactor containment structures, storage tanks, discharge lines and primary and secondary systems. Our experience in radiological groundwater characterization has supported the characterization and remediation of groundwater at operating and decommissioning nuclear power facilities as well as radiopharmaceutical research facilities, laboratories and universities.

NEI 07-07 Groundwater Protection Initiative Support

RSCS conducts comprehensive groundwater investigations and assessments in support of nuclear facilities. Tasks include consulting and field support to implement the Nuclear Energy Institute's 07-07 groundwater protection initiative. Our support includes development and implementation of investigation and monitoring strategies, characterization of local groundwater flow to identify plant-related radionuclides in the environment, the development and field implementation of groundwater fate and transport numerical modeling, as well as the development of hydrogeologic input parameters for modeling dose using the RESRAD numerical model code.


High quality geospatial data sets support characterization and site investigations and can support a broad range of projects including groundwater protection/investigation, buried pipe investigations, subsurface mapping and construction. RSCS can support your project with planning, implementing and interpretation of a broad spectrum of geotechnical investigation methods to support the needs of you site including:

  • 3D Site Digitization
  • Aquifer Testing (pump tests)
  • Down-hole data logging instrumentation
  • Down-hole Geophysical Logging
  • Extraction Well Design and Installation
  • Geotechnical Soil and Bedrock Boring Description
  • Groundwater Fate and Transport Modeling
  • Groundwater Sampling
  • Monitoring Well Design and Installation
  • Slug Testing
  • Soil and Sediment Sampling
  • Soil Resistivity Measurements
  • Surface Geophysical Survey Techniques (GPR, EM, T. Conductivity)

These geophysical methods provide our clients with the data they need for on-going plant maintenance and remediation.


RSCS, in conjunction with the Electrical Power Research Institute (EPRI), has developed an innovative Soil Vapor Extraction System (SVES) for monitoring subsurface soils above the water table for tritium contamination. Tritium (H-3) is a radioisotope of hydrogen and typically occurs in the environment as tritiated water (HTO or T2O). The EPRI SVES extracts and collects water vapor from the subsurface as a distillate that can be analyzed for the presence of tritium. RSCS has extensive experience researching this technique and successfully deploying the system in the field. The technology has been used to characterize contaminated soil/soil volumes, estimate the extent of shallow groundwater plumes and investigate pipe leaks in unsaturated soil. The Tritium SVES is minimally invasive and can be deployed rapidly using a variety of instillation methods including direct push (geo probeTM) soil coring, conventional drilling and soil vacuums. These installation methods create an excavation in which a soil vapor extraction point can be installed. Soil vacuum techniques provide the fastest and safest installation option in areas of dense underground utilities.

Advantage/Cost Benefit

  • Provides a large sample volume (bulk), undiluted by groundwater, relative to conventional monitoring well sampling methods.
  • Easily installed using common excavation methods.
  • Implemented/sampled regularly and in conjunction with conventional monitoring wells this technology can be useful as an early leak and spill detection tool.
  • A means to optimize monitoring well location and remedial systems/actions.
  • Characterize tritium distribution in the subsurface without the installation of conventional monitoring wells.