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DOE Vadose Zone Science and Technology Roadmap: A National Program of Research and Development

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DOE Vadose Zone Science and Technology Roadmap: A National Program of Research and Development Stephen J. Kowall, Ph.D. Program Manager, INEEL Complex-Wide Vadose Zone – PowerPoint PPT presentation

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Title: DOE Vadose Zone Science and Technology Roadmap: A National Program of Research and Development


1
DOE Vadose Zone Science and Technology Roadmap
A National Program of Research and Development
  • Stephen J. Kowall, Ph.D.

Program Manager, INEEL Complex-Wide Vadose Zone
NGA
April 12, 2001
2
The Vadose Zone in Context
Information for the Future
Surveillance
Durability
Fate and Transport
Monitoring
3
The Ultimate Vadose Zone Challenge Reducing
Uncertainty in Models Decisions
  • Models must be appropriate for the intended
    purpose -- not too complex or overly simplistic,
    and yet pertinent to the problem
  • Models must be based on Continuous Improvements
    in Science and Data
  • Uncertainty must be addressed
  • Quantifying Uncertainty will Assist in
    Environmental Decision Making

4
CONCEPTUALIZATION
DECISION MAKING PROCESS
5
ROADMAPPING DEFINED
  • Strategic Technology Planning Used by Industry
    and Government to
  • Develop a Common Perspective on Possible Future
    (10-30 years) ST Needs and
  • Make Better Research and Development (RD)
    Investment Decisions
  • Intended To Serve as Pathways to the Future
  • Identify Capability Gaps in ST
  • Provide a Structure for Organizing Technology
    Forecasts
  • Communicate ST Needs to Users and Research
    Community

6
The Decision-Making Process and the Roadmap
7
The Roadmap Team/FY 2000
The Team (62 Representatives)
The Executive Committee Chair Dan
Stephens, DB Stephens Assoc. Vice-chair Steve
Kowall, INEEL Frank Parker, Vanderbilt
University Lorne Everett, IT Group Ed Weeks,
USGS Carl Enfield, EPA Cathy Vogel, DoD John
Wilson, New Mexico Tech Darwin Ellis,
Schlumberger Corp. Dave Borns, SNL Rien Van
Genuchten, USDA
State Government 2
International 5
Other Federal Agency 11
DOE Laboratories 41
Industry 16
University 25
8
Where Are We In The Planning Process
  • Under Secretary Of Energy for Energy, Science and
    Environment Challenges INEEL to Lead Development
    of National Vadose Zone ST Roadmap -
  • Executive Committee Charted and Meets to Shape
    Project Scope and Direction - March 2000
  • Preliminary Draft Roadmap Published - September
    2000
  • Briefing to DOE Management - October 2000
  • Stakeholder Meetings Initiated - March 2001
  • Final Roadmap to be Published - September 2001

9
Stakeholder Outreach
  • To broaden public understanding of Vadose Zone
    issues and program concept
  • To improve the draft Roadmap and Scope
    Implementation Plan by integrating the insights
    and wisdom of others
  • To cultivate relationships for the long term with
    scientists, DOE staff, other agencies and a
    variety of interested stakeholders

10
National Vadose Zone ST Roadmap Web Site
Website http//vadosezone.inel.gov/ Program
Manager e-mail kowasj_at_inel.gov
11
National Vadose Zone Challenges
  • Knowledge Gaps in Basic Subsurface Processes Are
    Sources of Uncertainty to Address and Bound
  • Stewardship Responsibilities Require Increased
    Monitoring of Subsurface Processes
  • Our Vision A Four-Dimensional Description of
    Relevant Vadose Zone Processes Parameters

12
Vadose Zone Roadmap Research And Development
Thrusts
  • Develop Better Methods to Identify and Track
    (Monitor) Contaminants
  • Achieve Better Measuring of Hydrologic Variables
  • Better Integrate Geophysical and Hydrologic Data
  • Develop Advances in Improved Sensors and
    Instrumentation

13
Research and Development Thrusts (contd)
  • Develop More Accurate Models Simulations
  • Develop A Vadose Zone Problem Solving Environment
    (PSE) - A Software Priority
  • Develop A Dedicated High Power Computing
    Capability
  • Develop Highly Accessible Data and Model Library

14
SUCCESS GOALS FOR IMPLEMENTATION
  • DOEs RD Capabilities to Support Solutions to
    Major Environmental Management Problems
    Significantly Strengthened
  • Reliable Approaches to Long Term Stewardship
    Monitoring and Predicting Established
  • Strong Partnering with States and Other Federal
    Agencies
  • Order of Magnitude (rather than incremental)
    Improvements over Existing Technologies
  • Subsurface Science Base and Science Culture Built

15
BACK UP SLIDES
16
Knowledge Gaps in Basic Subsurface Processes Are
Major Sources of Uncertainty to Address and Bound
  • These processes are complex (not just
    complicated) to study and understand because they
    do not occur in isolation.
  • Processes that are closely associated (coupled)
    and nonlinear in their interactions include
  • Flow of fluids through variably saturated media
  • Transport rates of contaminants
  • Biogeochemical processes

17
Stewardship Responsibilities Require Increased
Knowledge of Physical Properties Processes
  • Need data at a range of scales
  • hydraulic solute transport parameters
  • fluid properties
  • biogeochemical parameters
  • fluxes, temperature, pressures, compositions,
    mineral concentrations
  • fluid chemical sources and sinks
  • Describe fundamental interactions among
    liquids-gases-solids
  • Accurately represent processes across different
    spatial and time scales
  • Describe flow transport in macroporous soils
    and unsaturated fractured media

18
Our Vision A Four-Dimensional Description of
Relevant Vadose Zone Processes Parameters
  • A multidisciplinary approach to data collection
    and monitoring will help
  • create and test models
  • confirm or alter theories
  • develop and verify simulations of past events
  • assess current conditions site performance
  • support management decisions, regulatory
    rulemaking and future predictions

19
Better Methods are Needed to Identify and Track
Contaminants
  • Fully explore monitoring technologies that are
    non-invasive and can distinguish various types of
    waste.
  • Develop verification techniques for identifying
    character changes in a contaminant source
  • Determine sensitivity limits of a measured
    chemicals in varied concentrations.

20
Advancements are Needed for Compliance Monitoring
of the Vadose Zone
  • Review state-of-the-practice in monitoring
    network design.
  • Develop an optimization methodology for
    subsurface characterization to save
  • Design decision support system to aid
    environmental managers in determining site and
    monitoring priorities

21
Software Priority A Vadose Zone Problem Solving
Environment (PSE)
  • Would unify mathematical, scientific and
    engineering ideas in one framework
  • Would allow for testing of more hypotheses and
    decision variables
  • Would inspire greater confidence in decisions

22
High Power Computing Capability Will Be Essential
for Vadose Zone Analyses
  • Need priority access to state-of-the-art,
    massively parallel or distributed computers
  • House machines at national lab(s) for ease of use
    by university/lab environmental scientist
  • Dedicate a support staff to train assist
    scientists engineers in applications

23
The Ultimate Challenge Reducing Uncertainty in
Models Decisions
  • Models must be appropriate for the intended
    purpose -- not too complex or overly simplistic,
    and yet pertinent.
  • Quantifying uncertainty relies on understanding
    the site character, its subsurface processes and
    the boundary effects beyond our control.
  • Uncertainty -- always an issue in the complex
    vadose zone

24
  • U.S. General Accounting Office, Report on
    Hanford, 1998
  • (GAO-RCED-98-80)
  • Research Needs in Subsurface Science, U.S.
  • Department of Energys Environmental Management
  • Program, National Research Council, 2000
  • Seeing Into the Earth, National Research Council,
    2000
  • Long-Term Institutional Management of U.S.
    Department
  • of Energy Legacy Waste Sites, National Research
  • Council, 2000
  • Vadose Zone Science and Technology Solutions,
  • Battelle Press, 2000
  • Conceptual Models of Flow and Transport in the
    Fractured
  • Vadose Zone,National Research Council, 2001
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