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When three-dimensional flow fields in rivers, lakes, reservoirs,
estuaries, and coastal waterbodies have been quantified, everything that moves with the flow - heat,
salinity, toxics, nutrients, oil, and sediment, even fish eggs and larvae - can also be quantified.
The expertise required to link the transport of water to the fate of these constituents includes hydrodynamics,
mathematics, computational fluid dynamics, hydrology, limnology, oceanography, water chemistry, aquatic ecology, and information technology.
These disciplines are essential to developing and applying mathematical models for watershed, waterbody, and ecosystem-scale simulations.
The Surfacewater Modeling Group (SMG) develops and applies multi-dimensional hydrodynamic, transport, and
fate models to every type of waterbody. Model applications are made in support of point source discharge permit applications,
optimization of cooling water systems, oil spill damage assessments, contaminated sediment management, water quality investigations, water supply
development, and TMDL studies. Clients include
Public water supply and wastewater agencies
Federal agencies including the Corps of Engineers, EPA, Bureau of Reclamation, and the USGS
Electric utilities (fossil, nuclear and hydropower)
The petroleum industry, including marine insurance underwriters
Steel and paper mills
The mining industry
Harbor, waterways and navigation authorities
Our strengths include our knowledge of the fundamental processes, the governing equations, and our ability
to work at the source code level. This expertise is combined with many years of experience in solving difficult environmental
engineering problems, working with regulators from our client's point of view.
ERM offers a wide range of technical disciplines in a worldwide context. In particular, the SMG staff works
with ERM’s air and groundwater modeling professionals to offer complete multi-media modeling competence.
Working with the scientists and toxicologists of the risk group allows us to
estimate human health and ecological effects, thus completing the "transport-fate-effects" paradigm used
to examine the impacts of man's use of aquatic resources.
Contact Information
The Surfacewater Modeling Group is the successor to J. E. Edinger Associates, Inc. (JEEAI), a consulting and research firm founded in 1974.
On Monday, October 3, 2005, the staff of JEEAI joined Environmental Resources Management, Inc. (ERM) at ERM’s campus in Exton, Pennsylvania,
about 10 miles west of our previous office in Wayne.
If you would like to discuss our services, please phone or e-mail one of the senior staff:
| Edward M. Buchak | 610.524.3650 | E-mail |
| Venkat S. Kolluru | 610.524.3654 | E-mail |
| George Krallis | 610.524.3662 | E-mail |
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