2021 Coal Ash Symposium

2021 Coal Ash Symposium

June 22, 2021 | Online :: Central Time

 

Coal ash is a continued challenge of all coal generation operators forcing them to develop and revise their ash management, ash storage procedures, and groundwater monitoring plans to keep their facilities in regulation. Those challenges of ash storage, basin closure clean-up, and their effects on groundwater and neighboring communities is a constant concern. Reviewing what other operators are doing and the lessons learned from those plans are valuable assets to all in the industry. Seeking additional understanding of any potential beneficial use of ash is in high demand within the industry as operators are trying to minimize their dry storage capacity.

This coal ash focused symposium will continue the discussion on those major topics of ash management planning, basin dewatering and closure methods, the possible applications and methods of ash beneficial use that minimizes ash storage, and the collection and sorting techniques of ash for beneficial use and sales. Attendees will leave this symposium having gained valuable practical experience-based information from those directly involved with case studies on basin closure, ash collection and storage, and ash beneficial use in various applications.

Learning Outcomes

  • Review recent and proposed changes to regulations and court decisions affecting coal ash and related groundwater topics
  • Listen to Duke Energy speak on the progress and plans for the continued closure of all of their basins and what is being done
  • Describe what Santee Cooper is doing in regard to their ash management plans and progress with basin closure and landfill construction on that site
  • Expand on the process of dewatering and stabilization of ash including the critical use of instrumentation and monitoring during the process
  • Review methods for how these issues can be mitigated while providing a beneficial use
  • List the various environmentally protective and cost-effective beneficial use benefits and opportunities
  • Listen to discussion points on ELGs that could affect the operation of baseload coal plants during coal ash basin closure and ways to minimize these concerns
  • Discuss groundwater evaluation, data analysis, and remediation at CCR sites, with a particular focus on groundwater management at existing CCR units

Agenda

Tuesday, June 22, 2021 : Central Time

9:00 – 9:10 a.m.
Log In

12:30 – 1:15 p.m.
Lunch Break

9:10 a.m. – 5:00 p.m.
Symposium Timing

9:10 – 9:40 a.m. :: The Evolution of CCR Rule Requirements and the Future

  • Addressing court decisions
  • Rule amendments
  • Potential future EPA rulemakings
    • Impoundment closure
    • Groundwater

Ali Abazari, Partner, Jackson Walker

9:40 – 10:30 a.m. :: Duke Energy Water Management for Ash Basin Closure – A General North Carolina Specific Overview

Duke energy is closing all basins system wide and will continue to do so over the next few decades with North Carolina containing a large portion of those basins. This presentation will discuss the status and progress in draining and excavating approximately 180 million tons of ash from North Carolina’s basins. The management of the basin water and the methods used will be discussed and reviewed.

Charles Smith, P.E., Senior Engineer-CCP Engineering, Duke Energy

10:30 – 10:45 a.m. :: Morning Break

10:45 – 11:40 a.m. :: Santee Cooper Winyah Generating Station Site Ash Plan

This presentation will detail the CCR impacts to Winyah Generating Station from closing a pond and building a new ash landfill in its footprint and updates on the status and

Todd Crawford, PE MBA, Senior Engineer – Generation Construction Management, Santee Cooper

11:40 a.m. – 12:30 p.m. :: Dewatering to Stabilize Ash and Instrumentation for Verification

This presentation will cover the current state of the practice with dewatering and stabilization of ash plus the latest technology in instrumentation and monitoring as an early indication of ash liquefaction due to vibration of construction equipment.

Paul Schmall, PhD, PE,  Vice President, Keller Specialty Services, Keller

Greg Landry, PE, Chief Dewatering Engineer, Keller

 12:30 – 1:15 p.m. :: Lunch Break

1:15 – 2:00 p.m. :: Landfill Avoidance by Reclaiming Yard Coal and Ash for Beneficial Use

Environmental and economic impact facing domestic utilities in their coal storage areas may increase 5-fold in 2021. This presentation will review methods for how these issues can be mitigated while providing a beneficial use? Methods for reclaiming unused coal left in the yard from plants with ceased operations and separating bottom ash and fly ash while dewatering for beneficial use will be reviewed.

Michael Rafter, President, RPM Solutions

John Tankard, Director of Operations, RPM Solutions

2:00 – 3:00 p.m. :: Ash Harvesting and an Update on Key Concepts for Beneficial Use of Coal Combustion Residuals

Recent developments for encapsulation of CCRs following guidelines on pages 21327 to 21330 of the Federal CCR Rule provide opportunities for creating safe and cost-effective structures.  This presentation will provide an update the key concepts that need to be considered for environmentally protective and cost-effective beneficial use and a summary of opportunities under consideration.

  • What is encapsulation of CCRs and how does it apply to concrete and other cementitious structures?
  • Explanation of how encapsulated CCRs can being used for large pumped hydro energy storage structures – comparison to batteries and other energy storage methods.
  • What is the Leachability Environmental Assessment Framework (LEAF) and which tests are applicable for the beneficial use of encapsulated CCRs?
  • What is in the NODA recently submitted by ACAA and other coal ash recycling organizations, and how does this apply to environmental protection and using encapsulated CCRs for infrastructure construction?
  • How are encapsulated CCRs being used for conventional concrete structure and other cementitious structures?

Chris Hardin, Managing Director and Principal Engineer, Coal Ash and Liquid Management (CALM) Initiative

3:00 – 3:15 p.m. :: Afternoon Break

3:15 – 4:15 p.m. :: Integrated Approach to Ash Pond Closure, Site Stormwater Management and Wastewater Treatment – Are the Effluent Limitation Guidelines (ELGs) Coming Back?

With recent changes with the U.S. EPA concerns about incremental implementation of the ELGs that could affect the operation of baseload coal plants during coal ash basin closure are a new area of concern.   This presentation on an Integrated Approach to ash pond closure and wastewater treatment will provide insights on the following:

  • Practical methods for reducing the amount of contact water including diversion channels, interim cover systems, and pre-treatment diversion ponds,
  • Guidelines for breaking down or separating ELGs versus coal ash pond wastewater treatment so that coal plants can maintain compliance throughout construction,
  • Practical information and guidelines on the probable cost of stormwater treatment and wastewater treatment during closure construction.
  • A suggested or recommended approach for shared responsibility for reducing the cost of wastewater treatment during a typical coal ash basin closure project.
  • Practical ways for pre-construction sampling of interstitial water sampling and testing to obtain estimated quality and quantity estimate of contact and/or wastewater volumes that can be expected during construction.

Chris Hardin, Managing Director and Principal Engineer, Coal Ash and Liquid Management (CALM) Initiative

4:15 – 5:00 p.m. Groundwater at CCR sites: Site Assessment, Data Analysis, and Remedy Alternatives

Federal and state CCR regulations are heavily focused on evaluating and mitigating potential impacts to groundwater from existing CCR units, with monitoring required since 2015.  This presentation will discuss the following topics related to groundwater evaluation, data analysis, and remediation at CCR sites, with a particular focus on groundwater management at existing CCR units which, in some cases, have been in use for decades: 

  • Federal and state regulations: What do the regs say about groundwater? 
  • Statistical approaches for SSI determination: What’s appropriate and when?
  • Data analysis: What tools and approaches are available to improve decision-making?
  • Groundwater remedy selection: What are my options? 

Stephen D. Richardson Ph.D. P.E. P.Eng., Vice President & Principal Engineer, GSI Environmental Inc. 

5:00 p.m. :: Program Concludes

Workshop

Draining and Stabilizing Fly Ash

Wednesday, June 23, 2021 Central Time

Overview

Referencing the extensive dewatering, soil stabilization and water treatment experience earned through the closure of over a dozen ash ponds, the workshop experts will discuss the behavior and responsiveness of ash to drainage methods, application of geo-structural techniques in ash, water treatment methods, geotechnical investigations, geotechnical verification and monitoring, and new advances in the technologies.

Note: This workshop is not open to direct competitors of Keller at the discretion of EUCI. 

Learning Outcomes

  • Discuss unique and problematic geotechnical behaviors of ash
  • Review methods of draining and dewatering installations
  • Identify slope stabilization, stable crust, localized liquefaction and ash stabilized in place
  • Review instrumentation and monitoring for stability and safety
  • Discuss case studies in ash stabilization
  • Review integration of drainage/stabilization methods for schedule, safety, quality, and cost

Agenda

9:00 – 9:10 a.m.
Log In and Welcome

9:10 a.m. – 12:30 p.m.
Workshop Timing

Geotechnical Behaviors of Ash

  • Geotechnical differences between soil and ash
  • Field vs Laboratory Testing
  • Moisture sensitivity
  • Capillarity
  • Vibration sensitivity

Necessary Geotechnical Behaviors for Pond Closure

  • Slope stabilization 
  • Providing a stable crust
  • Mitigating localized liquefaction
  • Ash stabilized in place

Methods of Dewatering Ash

  • Drainage Techniques
    • Rim ditching and sumping
    • Wellpoints
    • Deep wells
    • Other drainage methods
  • Selecting a drainage (dewatering) technique
  • Safe access for dewatering system installation
  • Geotechnical investigations and pilot tests

Geo-Structural Improvements in Ash

  • In-situ mixing
  • Retained excavations in ash
  • Barrier walls
  • Grouting techniques

Instrumentation and Monitoring

  • Evaluation of geotechnical data
  • Monitoring for liquefaction
  • In-situ measurements of shear strength

Case Studies in Ash Stabilization

  • Geo-structural applications in ash
  • Shallow & deep ponds
  • Lined and unlined impoundments

Water Treatment

  • Ponded water
  • Ash pore water
  • Available treatment technologies

Instructors

  •  Paul Schmall, PhD, PE,  Vice President, Keller Specialty Services, Keller

  • Greg Landry, PE, Chief Dewatering Engineer, Keller

  • Anthony Sak, PE, Senior Engineer, Keller

  • Pierre Gouvin, President, GeoInstruments

  • Ed Carter, Water Treatment Division Manager, Keller

Speakers

  • Ali Abazari, Partner, Jackson Walker

  • Todd Crawford, PE MBA, Senior Engineer – Generation Construction Management, Santee Cooper

  • Chris Hardin, Managing Director and Principal Engineer, Coal Ash and Liquid Management (CALM) Initiative

  • Greg Landry, PE, Chief Dewatering Engineer, Keller

  • Michael Rafter, President, RPM Solutions

  • Stephen D. Richardson Ph.D. P.E. P.Eng., Vice President & Principal Engineer, GSI Environmental Inc.

  • Paul Schmall, PhD, PE,  Vice President, Keller Specialty Services, Keller

  • Charles Smith, P.E., Senior Engineer-CCP Engineering, Duke Energy

  • John Tankard, Director of Operations, RPM Solutions

Online Delivery

We will be using Microsoft Teams to facilitate your participation in the upcoming event. You do not need to have an existing Teams account in order to participate in the broadcast – the course will play in your browser and you will have the option of using a microphone to speak with the room and ask questions, or type any questions in via the chat window and our on-site representative will relay your question to the instructor.

  • IMPORTANT NOTE: After November 30 you will not be able to join a Teams meeting using Internet Explorer 11. Microsoft recommends downloading and installing the Teams app if possible. You may also use the Edge browser or Chrome.
  • You will receive a meeting invitation will include a link to join the meeting.
  • Separate meeting invitations will be sent for the morning and afternoon sessions of the course.
    • You will need to join the appropriate meeting at the appropriate time.
  • If you are using a microphone, please ensure that it is muted until such time as you need to ask a question.
  • The remote meeting connection will be open approximately 30 minutes before the start of the course. We encourage you to connect as early as possible in case you experience any unforeseen problems.

Register

Please Note: This event is being conducted entirely online. All attendees will connect and attend from their computer, one connection per purchase. For details please see our FAQ

If you are unable to attend at the scheduled date and time, we make recordings available to all registrants for three business days after the event

Event Standard RateAttendees

CEUs

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EUCI has been accredited as an Authorized Provider by the International Association for Continuing Education and Training (IACET).  In obtaining this accreditation, EUCI has demonstrated that it  complies with the ANSI/IACET Standard which is recognized internationally as a standard of good practice. As a result of their Authorized Provider status, EUCI is authorized to offer IACET CEUs for its programs that qualify under the ANSI/IACET Standard.

EUCI is authorized by IACET to offer 0.6 CEUs for this event and 0.3 CEUs for the workshop.

Requirements for Successful Completion of Program

Participants must log in and be in attendance for the entirety of the event to be eligible for continuing education credit.

Instructional Methods

Case studies, PowerPoint presentations, and group discussion will be used in this event.

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