EWM Group

Company EWM Products Representative Projects

Service Expertise:

Environmental Services

Water Resource

RCRA/CERCLA Cleanup

Aquifer Storage and Retrieval (ASR)

Effluent Disposal Systems

Reclaimed Water Injection for Seawater Barrier

Mining Industry

Landfill

Chemical and Petroleum Industry

Data Reports

U.S. DOE Hanford Project
An illustrative example of complete computational and database management
support to World’s largest environmental cleanup effort.

A plutonium production complex at Hanford, WA, with nine nuclear reactors and associated processing facilities. Hanford played a pivotal role in the nation's defense for more than 40 years, beginning in the 1940s with the Manhattan Project

The U.S. DOE Hanford Site is recognizes as the world’s largest environmental cleanup effort. This site was established during World War II to produce plutonium. Fifty years of nuclear weapons production resulted in approximately 1.7 trillion liter (450 billion gallons) of liquid waste being released to the ground at the Hanford Site. Site complexities include:

586 Square mile area
300 Contaminated sites
2.2 million chemical records
1.2 million water level data
16 geologic layer complex geometries

Several sites are adjoining to the Columbia River

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EWM technologies are used for data access, modeling & uncertainty analysis.

	CFEST flow and transport tools are used for efficient mathematical representation of complex geology

CFEST interfaces EVS and TecPlot provide state-of-the-art 3D displays and animation technologies for innovative self-explanatory graphics to verify inputs, interpret outputs, and interact with regulators and the public.

	Geologic settings are complex. EWM integrated tools provide means to preview & verify each data layer in the site model
CFEST-EVS integrated tools interactively display details of input and output results		CFEST animation provide contaminant distribution at a given time for the given model layer as overlay over the groundwater elevation

Integrated CFESTUCODE
technologies provide
efficient means for
inverse parameter
estimation using
several thousands of
historical water level
data. CFESTUCODE
provides
optimal estimates
for surface and
boundary flux rates
which are not
feasible to measure
in field.

Inverse parameter estimation requires high computational power. CFEST-UCODE is successfully implemented by linking 45 PCs to provide optimal estimations in one to two days of computations. Local scale uncertainty analyses identifies optimal locations of needed parameters and based on these results additional characterization strategy are developed.

CFEST 2D and 3D tools provide easy means to make sub-models from existing site wide detailed model. CFEST tools extract boundary conditions, material properties and other details for the sub-models.

Several sites need Monte Carlo thousands of simulations and thus need to develop relatively simplified models.

While most of the consultants use over simplified “almost dummy model” and thus resulting in questionable results. Following are illustrative examples of EWM approach to develop defendable model from detailed models.