If you are going to be at the Missouri Waste Control Coalition Environmental Conference, please track me down and say hello.  I would enjoy getting your thoughts on the presentation or experiences when dealing with residual groundwater and soil impacts.  A brief description of the presentation I will be giving on Tuesday July 14 at 10:30 AM is below:

For many environmental sites, the common practice of excavation and disposal of impacted soils has occurred. Institutional controls (ICs) or deed restrictions have been established as a portion or all of the remaining required site‐specific remedial action. Often, risk to receptors is also controlled by various means to acceptable levels. However, in some cases sites have impacts that remain on or off‐site that prevent site closure. When this remaining impact is not amenable to excavation/disposal and ICs approaches, the remediation project manager is faced with the issue of additional residual treatment and/or groundwater plume management. Postremediation residual levels of coal tar residing in the “plume management” areas has become of particular interest to regulators. The role of how bioremediation can be utilized for residual and plume management is of specific interest.

Using case studies, this presentation will provide comparisons of the options and limitations of both the treatment and plume management approaches including cost implications with an emphasis on the role of bioremediation. Both passive and active treatments scenarios are presented. The applicability, limitations and expectations of the following in situ treatment technologies will be discussed with site‐specific examples of both successes and failures:

Residuals treatment:

• Bioremediation
• In situ stabilization
• In situ chemical oxidation
• Thermal treatment

Plume management:

• Biodegradation
  • natural / passive
  • active
• Reactive barriers
• Other containment methods

 

 

 

 

 

 

Derek Ingram