Adapting to Changing Environments: Water as a Mission-Critical Resource

This session will focus on the characterization, remediation and/or management of contaminated groundwater plumes that can be characterized as "large" due to the total lifecycle costs, sheer physical size, or complexity.

Key topic areas will include:

• Large Plume Hydrogeology - Rethinking Conceptual Site Models
• Remedy Optization - Flux Based Solutions
• Large Plume Cleanup: Fact or Fiction?
• Combined Sites and Responsible Parties Perspective
• Combined Remedies

9:25 a.m. Introduction
9:30 a.m. Converting Contaminated Aquifers into Purifying Filters: Colloidal Activated Carbon
Jeremy Birnstingl, Ph.D.
9:55 a.m. Superfund Optimization Strategy: Extracting Lessons Learned on Managing Large Plumes from 640 Optimization Recommendations
Carlos Pachon
10:20 a.m. Refreshment Break
10:40 a.m. Groundwater and PFAS: State of Knowledge and Practice
Seth Kellogg, PG
11:05 a.m. A Systematic Approach for Designing and Operating DGR™ Systems to Advance Plume Restoration
Marc W. Killingstad
11:30 a.m. A New Perspective on Flow, Transport, and Achievable Endpoints in Large Plume Restoration: Removing the Diffusion Road Block
Scott Potter, Ph.D., PE
11:55 a.m. Lunch (Provided)
1:10 p.m. Will It Work Here? Site Assessment to Determine Suitability for Passive Treatment of Nitrogen
Marcel Belaval
1:35 p.m. Abiotic Degradation of TCE by Naturally Occurring Magnetite can be Important in Large Plumes
John Wilson, Ph.D
2:00 p.m. Groundwater/Lake Interactions Affect Large-Scale Migration and Attenuation of PFAS and VOC Plumes in the Cape Cod Aquifer, Massachusetts
Denis R. LeBlanc
2:25 p.m. Aerobic Cometabolic Biodegradation to Treat Emerging Chemicals and Co-Contaminants in Dilute Plumes
Min-Ying Chu, Ph.D., PE
2:50 p.m. Refreshment Break
3:10 p.m. Big Plume; Little Remediation – Smart Characterization in Action
Nick Welty, PG
3:35 p.m. Remediation of Large Groundwater Plumes through Optimized Extraction System and Monitored Natural Attenuation
Noman Ahsanuzzaman, Ph.D., PE
4:00 p.m. Superfund Groundwater Remedy Performance
Linda Fiedler
4:25 p.m. A New Framework for Accelerated Site Closure: Dynamic Remedy Implementation
Mark Klemmer, PE

This session will focus on emerging contamination threats to groundwater resources, and the state of the art in how they can be addressed.

Key topic areas will include the treatment, characterization, and risks associated with:

• Perfluorinated Compounds
• 1,4 - Dioxane
• Pharmaceuticals and Other Emerging Contaminants
• Advances in Characterization and Conceptual Site Models
• In Situ and Ex-Situ Treatment Technologies

9:25 a.m. Introduction
9:30 a.m. Using Stable Isotope Probing to Confirm Biodegradation of 1,4-Dioxane During In-Situ Remediation
Caitlin Bell, PE
9:55 a.m. Enhanced In Situ Co-Metabolic Biodegradation of 1,4-Dioxane in Weathered Bedrock via Propane Biosparging
Andrea Krevinghaus, PE
10:20 a.m. Refreshment Break
10:40 a.m. Insights from Detailed Subsurface Characterization of a Plume of Poly- and Perfluoroalkyl Substances on Cape Cod, MA
Andrea K. Weber
11:05 a.m. Sorptive Removal of Perfluorooctane Sulfonate from Aqueous Solution by Layered Double Hydroxides
Xin Song, Ph.D.
11:30 a.m. In Situ Containment of PFOA/PFOS using Colloidal Activated Carbon
Kristen Thoreson, Ph.D
11:55 a.m. Lunch (Provided)
1:10 p.m. Emerging Characterization for Emerging Contaminants: Saturated Soil Sampling and 1,4-Dioxane
Patrick Curry, PG
1:35 p.m. Overview of Remediation Technologies for PFAS-Contaminated Groundwater
Jed Costanza
2:00 p.m. Remediation of Poly- and Perfluoro Alkyl Substances: New Remediation Technologies for Emerging Challenges
Jeffrey McDonough
2:25 p.m. Assessment of PFAS in Soil and Groundwater: Direct Comparison of New Analytical Technologies for Comprehensive Analysis of PFAS Including Precursors
Erika Houtz, Ph.D.
2:50 p.m. Refreshment Break
3:10 p.m. Real-time Multi-stream Cr(VI) Monitor Validates RCOF Treatment Process at California Water Utility
Tom Williams
3:35 p.m. Technical Resources to Respond to Environmental Releases of Poly- and Perfluoralkyl Substances (PFAS)
Patricia Reyes
4:00 p.m. Distribution of PFOS in Groundwater from AFFF Storage, Handling, and Use
Jeffrey R. Hale, PG
4:25 p.m. Boron as an Emerging Contaminant at Coal Ash Sites and Large Plume Management Metrics
Stephanie Jones

Superfund Remedial Program: The Convergence of Science, Technology and Regulation in a Diverse World

The Superfund Remedial Program has encountered and responded to many groundwater challenges in the three and one half decades of its existence.  The lessons learned during its existence have uniquely positioned the program to respond to emerging issues in the context of the existing regulatory framework supported by sound existing and evolving science and remedial technologies.  The diverse nature of Superfund sites requires a host of remedial strategies, technologies and the regulatory framework to tailor a remedy that is protective of human health and the natural resource.  This approach which has evolved over time, is utilized whether addressing a new contaminant (e.g., perfluorinated compounds), complex subsurface conditions (e.g., fractured bedrock), or large dilute groundwater plumes.

9:20 a.m. Introduction
9:25 a.m. Using Geology to Follow the Groundwater, Follow the Flow to Successful Remediation
Rick Cramer, PG
9:50 a.m. Big Data & Augmented Reality: The Future of Conceptual Site Models has Arrived
John Horst, PE
10:15 a.m. Stratigraphic Flux – Applying Sequence Stratigraphy and High-Resolution Site Characterization to Find Contaminant Flux
Joseph Quinnan, PE, PG
10:40 a.m. Understanding Fate and Transport of PFAS to Develop Good Conceptual Site Models of AFFF Impacted Facilities
Ian Ross, Ph.D.

This session will focus on threats to drinking water supply and where it fits with restoration by developing appropriate  treatment technologies.

Key topic areas will include:

• Regulatory Considerations
• Situational Response to Threats
• Monitoring and Public Communication
• Demonstrated Treatment
• Innovative and Emerging Technologies for Treatment

9:20 a.m. Introduction
9:25 a.m. Explaining 1,4-Dioxane Occurrence in America’s Public Water Supplies
Thomas Mohr, PG
9:50 a.m. Cost Recovery Options for Emerging Contaminants- Shifting Treatment Costs from Ratepayers to Polluters
Richard Head
10:15 a.m. Advanced Oxidation Plant at the Tucson International Airport Area Groundwater Remediation Project
Jeff Biggs
10:40 a.m. Fast-Tracked Design-Build of a GAC Treatment System for Removal of PFOA from a Municipal Drinking Water Supply
Bjorn Cuento
11:05 a.m. Break
11:10 a.m. Emerging Contaminants: Situational Management Staying Ahead of the Issue
Rich Royer, Ph.D.
11:35 a.m. Lunch (Provided)
12:45 p.m. Fate and Transport Modeling of PFOS in a Fractured Chalk Aquifer Towards a Large Scale Drinking Water Abstraction
Kelly S. Houston, PE
1:10 p.m. Treating Emerging Contaminants in Drinking Water: LADWP’s Planning and Design
Nicole Blute, Ph.D., PE
1:35 p.m. Treatment of Perfluorinated Compounds to Protect Two Drinking Water Supplies
Kyle Hay
2:00 p.m. Contamination of Public Wells by Perfluorochemicals: How Three New Hampshire Utilities Approached the Problem.
Jeffrey Marts, PG

11:05 a.m. Introduction
11:10 a.m. Combining ZVI and Organic Substrates for Full-Scale Treatment of Dilute Trichloroethene Plume in an Aerobic Aquifer
Daniel P. Leigh, PG
11:35 a.m. Lunch (Provided)
12:45 p.m. Regulatory Closure of a Large Groundwater Plume and Redevelopment at a Legacy Aerospace Site – NASA Downey CA
Fred Payne, Ph.D.
1:10 p.m. 1,4Dioxane and PAH removal with Ozone Peroxide Advanced Oxidation Process
Angel Gebeau, PE
1:35 p.m. Flexible Adaptive Decision Document and Attentive Implementation of Combined Remedies – ERH and ERD - at NPL Site, Grants, NM
Sairam Appaji

Why are so many sites not performing as expected when our ability to remediate has improved? Are our remedial designs built on too many assumptions? Do we need to rearrange the dynamic process and organize the information we have differently? Flow vectors, new and existing tools, improved understanding of the dynamics of the system—are we asking the right questions to refine our approaches or are we simply employing what we’ve been doing? The panel of groundwater professionals will challenge your current practice and why we need to start thinking differently if we wish to improve our impact on contaminated sites.