Natural Resource Damage Assessments

The Natural Resource Damage Assessment (NRDA) process promulgated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the Oil Pollution Act (OPA) calculates the monetary cost of restoring injuries to natural resources that result from releases of hazardous substances.

Damages are evaluated by identifying the functions or "services" provided by the resources, determining the baseline level of the services provided by the injured resource(s), and quantifying the reduction in service levels as a result of the release of contaminants. By developing realistic estimates of risk, the uncertainty and conservatism of cleanup levels are reduced, resulting in more cost-effective remedial solutions.

The collective experience of Geosyntec's practitioners has shown that a "removal first" approach to addressing impacted sites is not always cost-effective, has often failed to address the actual risk from contaminants of concern, and may ultimately result in more ecological harm to the environment. Geosyntec's approach is to identify the risk and develop an adaptive management strategy to address this risk through a combination of monitored natural recovery, removal, capping, and institutional control measures.

We also recognize the importance of restoration in addressing remedial impacts as well as providing value through the Natural Resource Damage Assessment (NRDA) process. This comprehensive approach provides a cost-effective solution and addresses the true risk, thereby resulting in effective remediation.

The complexity of sites regulated under CERCLA and OPA, and the need to focus on risk both to support investigation and selection of remedial methods as well as potential NRDA claims, requires an excellent technical reputation and working relationship with regulators. While the federal government's mandate is to focus on risk mitigation, at the local level it is often a challenge to build the consensus for innovative remedies.

Geosyntec personnel have the experience necessary to work with state regulators and federal officials to develop logical and effective remedial approaches that cost-effectively and efficiently mitigate current and future site risk. Our experience allows us to approach sediment sites with a proven approach that is acceptable to regulators.

We offer clients a hands-on understanding of the NRDA process that addresses potential restoration opportunities during the remedial alternative evaluation phase. We also possess the ability to tackle both common and emerging risk drivers, including microbial and radiological effects, chemicals, metals (lead, arsenic, etc.), and polycyclic aromatic hydrocarbons.

Lead Consultants

  • Lisa Austin, P.E.
    Lisa Austin is a Principal Engineer based in California with more than 25 years of experience focused on water quality and stormwater management. Lisa's practice focuses on National Polluta ...
  • David Bonnett, P.E., P.Eng.
    David Bonnett is a Principal Engineer based in Massachusetts with 30 years of experience focused on water and natural resources engineering and waste containment facility planning and design, inclu ...
  • Mark Hanna, Ph.D., P.E., LEED AP
    Mark Hanna is a Senior Principal Water Resources Engineer based in California with over 20 years of experience focused on water resources management. His experience in water rights, integrated wate ...
  • Poppy Staub
    Margaret "Poppy" Staub is a Senior Principal Geologist and Environmental Engineer based in Colorado with more than 20 years of experience focused on environmental compliance, Superfund site managem ...
  • Eric Strecker, P.E., BCEE
    Eric Strecker is a Senior Principal Water Resources Engineer based in Oregon with more than 30 years of experience focused on the design, monitoring, and evaluation of stormwater best management pr ...
  • Keith Tolson, Ph.D.
    Keith Tolson is a Senior Principal Environmental Scientist based in Florida with more than 15 years of experience focused on environmental sciences. He Specializes in the application of risk-based ...
  • Kim Williams, P.E., CPSWQ
    Kim Williams is a Senior Consultant Water Resources Engineer based in California with more than 20 years of experience focused on civil and environmental engineering. Specializing in stormw ...
  • Adrienne Nemura, P.E., BCEE
    Adrienne Nemura is a Senior Principal Water Resources Engineer based in Michigan with more than 30 years of experience focused on helping clients identify cost-effective and sustainable solutions t ...
  • Michael Lodato, P.G.
    Michael Lodato is a Principal Geologist based in Florida with more than 25 years of experience focused on the field of hydrogeology, site assessment, and remediation using innovative technologies. ...
  • Ganesh Krishnan, P.E., D.WRE
    Ganesh Krishnan is a Senior Principal Engineer based in Georgia with more than 20 years of experience focused on water resources and geoenvironmental engineering. Ganesh specializes in design engin ...
  • Brandon Steets, P.E.
    Brandon Steets is a Senior Principal Water Resources Engineer based in California with more than 16 years of experience focused on helping clients develop cost-effective solutions to their complex ...
  • Mark Ellard, P.E., CFM, D.WRE
    Mark Ellard is a Senior Principal Water Resources and Environmental Engineer based in Florida with more than 20 years of experience in diverse watershed management, water quality assessment, and st ...
  • Kathleen Harrison, P.G. QSP, QSD, QISP, ToR
    Kathleen Harrison is a Principal Geologist based in California with more than 20 years of experience focused on watershed management, stormwater pollution prevention, and erosion control. She is a ...
  • Ken Susilo, P.E., CPSWQ
    Ken Susilo is a Senior Principal Water Resources Engineer based in California with more than 20 years of experience focused on urban stormwater management. Ken specializes in the development of mul ...
  • Tom Fendley, P.E.
    Tom Fendley is a Principal Environmental Engineer based in Georgia with more than 30 years of experience focused on civil/infrastructure design, construction engineering and contract administration ...
  • Philip Reidy, P.E.
    Phil Reidy is a Principal Water and Natural Resources Engineer based in Kuala Lumpur with over 25 years of experience focused on geotechnical and stormwater management. He has specialized experienc ...
  • Lance Fontenot, Ph.D., PWS
    Lance Fontenot is a Principal Toxicologist based in Louisiana with more than 20 years of experience focused on assessing the human health and ecological effects of hazardous substance releases, and ...
Geosyntec Consultants
Geosyntec is a specialized consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

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