The Scenarios Approach to Attenuation-Based Remedies for Inorganic and Radionuclide Contaminants

TRRP Training: 2022 Program

presented by: GSI Environmetal Inc.

Texas Risk Reduction Program regulations (TRRP; 30 TAC 350) establish consistent risk-based protocols for assessment and response to soil, groundwater, or surface water impacts associated with environmental releases of regulated wastes or substances.

Presented by GSI Environmental Inc., this popular and informative training series is a must for professionals who need a working understanding of TRRP and those needing to stay up-to-date with the latest TCEQ TRRP guidance and policies.

TRRP Training Course (2 Days): Provides an overview of the TRRP framework and step-by-step training on property assessment and response action procedures established under the TRRP rule

Attendees will become acquainted with rules, key guidance and policies covering affected property assessments, protective concentration levels, and response actions. The course material presents strategies for efficient project management in compliance with TRRP and explains the various report forms adopted by TCEQ.

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Dates and Location

Dates

June 14th and 15th, 2022

Location

Crowne Plaza River Oaks 2712 SW Freeway Houston, Texas 77098 713.523.8448 http://www.crowneplaza.com/

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Authors: Michael J. Truex, P. Brady, Charles J. Newell, M. Denham, Karen Vangelas

Published: May 2011 in Savannah River National Laboratory volume SRNL-STI-2011-00459.

Abstract

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Complex Issue:
Applying attenuation-based remedies for inorganic and radionuclide contaminants is challenging because of the complexity of the attenuation mechanisms, the key role played by the underlying geochemistry, and because degradation processes do not apply to most of these contaminants.

Lots of Science Available:
The U.S. Environmental Protection Agency (EPA) has issued a comprehensive, three-volume technical protocol for Monitored Natural Attenuation (MNA) of inorganic contaminants that explains key attenuation processes for inorganic and radionuclide compounds in groundwater. In addition, there is a growing but dispersed body of scientific data, resource tools, and new concepts for MNA.

Scenarios: A New Interpretation
The Scenarios Approach helps you evaluate and implement attenuation-based remedies by:

  • Complementing—not replacing—the EPA Technical Protocol with extensive links and references to this valuable EPA resource
  • Providing a stepwise process to quickly select the “Scenario” (conceptual model
  • framework) for evaluating attenuation-based remedies at any site
  • Helping refine this Scenario to create a tailor-made conceptual model for a specific site
  • Explaining how inorganic contaminants behave in different types of groundwater environments
  • Providing information about how to use Enhanced Attenuation (EA) approaches when necessary to augment MNA
  • Making relevant scientific knowledge more accessible and understandable.

Target Audience:
The document is intended to be a technical resource for MNA evaluators and to
foster communication between site managers, regulators, stakeholders, and
technical specialists.