Hyatt Regency Indian Wells Resort & Spa
Indian Wells, California

Conference & Education

We’re working with the Environmental Research & Education Foundation (EREF) to deliver a conference program that is more technical, more innovative and more essential to you than ever before—and that warrants the two-year wait! The core education of GWMS is the submission of comprehensive abstracts in all areas related to solid waste engineering and managment that have been vetted by GWMS’s committe of industry experts. The presentations will be given by researchers from top academic institutions and industry experts.

Check out the GWMS 2018 agenda now.


Sunday, February 11, 2018

5:00 pm to 7:00 pm
Sunday Welcome Reception
Grand Salon Ballroom

Monday, February 12, 2018

7:00 am –
Registration Opens

7:30 to 8:45 am
Continental Breakfast

8:45 to 10:00 am –
Welcome & Keynote
Keynote Speaker:  Terry Tamminen, CEO, Leonardo DiCaprio Foundation

10:00 am to 10:30 pm –
Coffee Break

10:30 am to 12:00 pm –
Session One

Track A

Leachate Characterization

Track B

Landfill Design - Structural Stability

Track C

Anaerobic Digestion

Moderator: Kevin Torrens, Brown & Caldwell

Moderator: Steven Menoff, Civil & Environmental Consultants, Inc.

Moderator: Mort Barlaz, North Carolina State University

State of Practice of Leachate Management & Treatment in the U.S.

  • Bryan Staley and Stephanie Bolyard, Environmental Research & Education Foundation

Do We Need to Re-Evaluate Our Landfill Slope Stability Analyses to Account for the Changing Waste Stream

  • Eric Chiado, Civil & Environmental Consultants, Inc.

High Solid Anaerobic Co-digestion of Food and Yard Wastes with Biosolids for Biogas Production

  • Eunyoung Lee, Department of Civil & Evironmental Engineering, University of South Florida

Characterization of UV Quenching Substances in Waste Liquids from ETLFs and its Implication

  • Renzun Zhao, Lamar Univ.

Design and Construction of Reinforced Soil Structures Using Solid Utility Waste as Backfill Material

  • Marco Isola, Maccaferri, Inc. 

Anaerobic Digestion Pilot Project: A Case Study

  • Amy Knight, Civil & Environmental Consultants, Inc.

Effect of Food Waste Diversion on Leachate Quality

  • Florentino de la Cruz, North Carolina State University  

Facilitating Landfill Cell Construction below the Groundwater Table in Central Florida using a Vertical Cutoff Wall

  • Tobin McKnight, Jones Edmunds & Associates, Inc. 

Co-Digestion and AD Alternatives for Waste Management in Buenos Aires

  • Rodrigo Pontiggia, Maria Cielo Lorenzo, Iris Cortez, Melisa Altina, Ignacio Varde (Benito Roggio Ambiental) and James Law (SCS Engineers) 

A Chemical Characterization of Landfill Leachate:  Leachate Organic Matter Compositional Variations

  • Stephanie Bolyard, Environmental Research & Education Foundation

Microbial Population Development during the Anaerobic Decomposition of Food Waste

  • Morton Barlaz, North Carolina State University  

12:00 to 2:00 pm –
Lunch & Poster Viewing
Lunch Speaker:  Michael E. Hoffman, Managing Director-Group Head Diversified Industrials, Stifel

2:00  to 3:30 pm –
Session Two

Track A

Solid Waste Data/Informatics

Track B

Elevated Temperature Landfills

Track C

Coal Combustion Residuals I

Moderator: Jon Powell, Yale University

Moderator: Greg Cekander, Waste Management Inc.

Moderator: Milind Khire, University of North Carolina-Charlotte

Solid Waste Generation and Composition: The Evolving Ton

  • Kim Smith,  State University of New York-Stony Brook 

Case Study of a Florida Elevated Temperature Landfill

  • Debra Reinhart, University of Central Florida

Technical Update on Brine Encapsulation R&D

  • Kirk Ellison, Electric Power Research Institute 

Waste Informatics: Establishing and Characterizing Contemporary Landfill Quantities and Practices in the U.S

  • Jon Powell, Yale University

Impacts of Temperature on Waste Stabilization

  • Paul Van Geel, Carleton University

A Thermodynamics-Based Protocol for Assessing the Suitability of Geopolymer Formulations for Solidifying/stabilizing Coal Combustion Residues

  • Monday Okoronkwo,  University of California-Los Angeles

Accounting for Non-Hazardous Industrial Waste in the United States: A Triangulation Approach

  • Jonathan Krones, Yale University

Heat Generation and Heat Transfer in Municipal Solid Waste Landfills Using Geothermal Modeling

  • Terry Johnson, Waste Management

Coal Ash Landfill Leachate Impacts at a ZLD Power Plant

  • Ivan Cooper, Civil & Environmental Consultants, Inc.

Impact of Methodology and Assumptions on MSW Estimates

  • Bryan Staley and Debra Kantner, Environmental Research & Education Foundation

Heat Generation and Accumulation in Municipal Solid Waste Landfills

  • Morton Barlaz, North Carolina State University  

Mineralogy Optimization for Metal and Halide Immobilization in Co-disposed Flue Gas Desulfurization Brines and Bituminous Coal Fly Ash 

  • Wenlong Zhang, Georgia Institute of Technology

3:30 to 4:00 pm  –
Coffee Break

4:00 to 5:30 pm –
Session Three

Track A

Landfill Emissions I

Track B

Characterizing Elevated Temperature Landfills

Track C

Waste Management Planning

Moderator: Garth Bowers, Cornerstone Engineering

Moderator: Bryan Staley, Environmental Research & Education Foundation

Moderator: Bob Gardner, SCS Engineers

Diurnal Variations of Landfill Methane Emissions

  • Madjid Delkash,  University of Delaware

Evaluating Landfill Liquids as Pre-Cursors to Predict Elevated Temperature Conditions

  • Michael Caldwell, Waste Management

Cost-effectiveness Analysis of Waste Management Strategies on Small Islands: The Case of Kinmen, Taiwan

  • Hsin-Tien Lin, Kyoto University

Atmospheric Modeling to Assess Wind Dependence in Tracer Dilution Method Measurements of Landfill Methane Emissions

  • Paul Imhoff, University of Delaware

Characterization of Thermophilic Waste Decomposition at a Landfill Experiencing Elevated Temperatures

  • Florentino de la Cruz, North Carolina State University

Scenario Modeling: A Technique for Conducting Sensitivity Analysis of Life Cycle Costs for Solid Waste Management Systems

  • Robert Gardner, SCS Engineers

Prospect for Drone-Based Methane Mapping for Quantitative Whole Landfill Emissions and Surface Monitoring

  • Pete Roos, Bridger Photonics, Inc.

Pyrolytic Reactions in Municipal Solid Waste Landfills: Theory, Experiment and Connection to Field Observations

  • Marco Castaldi, City University of New York  

Creating Sustainable, Cost-Effective, and Equitable Waste-Management Programs in Maine Communities

  • Ronald Deprez, Public Health Research Institute, Inc.

Surface Emissions Monitoring at the City of Vancouver Landfill

  • Lynn Belanger, Don Darrach, City of Vancover (Canada) Colin Wong, Golder Associates (Canada)

Predicting the Service Life of Geomembranes under Elevated Temperatures

  • Timothy Stark, University of Illinois at Urbana-Champaign

Life Cycle Modeling for Future Solid Waste Management Planning

  • James Levis, North Carolina State University

5:30 to 7:00 pm –
Reception & Poster Viewing

Tuesday, February 13, 2018

7:00 to 8:15 am –
Continental Breakfast

8:30 to 10:00 am –
Session Four

Track A

Leachate Disposal at POTWs

Track B

Recycling & Diversion

Track C

Closure/Post Closure

Moderator: Terry Johnson, Waste Management

Moderator: Craig Bartlett, Region of Durham (Ontario, CA)

Moderator: Mirka Januszkiewicz, Region of Durham (Ontario)

You’re “Cut off.” Now what? – A Case Study of How WCA Avoided Permanent Cut Off Through Effective Communication and Technical Support for Strong H2S Odors in Leachate

  • Marcos Elizondo, Luong Nguyen (WCA), and Brad Granley, Leachate Management Specialists, LLC

Two Year Results on Production of Saleable Products from MSW

  • Luc DeBaere, Organic Waste Systems

A Plan for Controlling Landfill Gas Migration – Post Closure Care

  • April Yochim, Region of Waterloo (Canada)

Simultaneous Energy Generation and Ultraviolet Quenchers’ Removal from Landfill Leachate Using a Microbial Fuel Cell

  • Syeed Iskander, Virginia Tech

A Comparative Study of Four European Mechanical Biological Treatment Plants

  • Athanasios Bourtsalas, Columbia University

Successful Mitigation of Landfill Gas Migration at a Closed Facility with Saturated Waste

  • James Walker, Cornerstone Environmental Group

Metal-humic Substances Complexation Under Landfill Leachate Matrix and its Implication on UV Transmittance

  • Renzun Zhao, Lamar University

Rural Iowa Hub and Spoke Recycling Project

  • Michelle Leonard, SCS Engineers

Evaluating Landfill Closure and Post Closure Costs Using Decision Tree Modeling

  • John Claypool, Brown and Caldwell

Leachate Dissolved Organic Matter Impacts on Wastewater Effluent Quality

  • Stephanie Bolyard, Environmental Research & Education Foundation

How Do Alternative Landfill Closure Designs Stand Up to the Test of Time? A Look at the Performance of Installed, Subtitle D Approved ClosureTurf Final Closure Projects

  • Chris Eichelberger, Agru America

10:00 to 10:30 am –
Coffee Break

10:30 am to 12:00 pm –
Session Five

Track A

Leachate Treatment

Track B

Coal Combustion Residuals II

Track C

Organics Diversion

Moderator: Renzun Zhao, Lamar University

Moderator: Ben Gallagher, Southern Company

Moderator: Debra Kantner, Environmental Research & Education Foundation

Operating Data Comparison for a Leachate Treatment Technology Transition from Sequencing Batch Reactor to Membrane Bioreactor with Effluent Polishing

  • Danielle Popov, Frank DeOria, Mark Sposato, Ephraim, Schayek,  O’Brien & Gere and Anne Reichert, Waste Management

Mitigating Acid Mine Drainage Using Stabilized Flue Gas Desulfurization Material

  • Chin-Min Cheng, Ohio State University

Trade-offs Between Collection and Processing Costs When Implementing an Organics Diversion Program

  • Kenneth Beaver, Environmental Solutions Group

Startup of an Advanced Leachate Treatment Water Resource Recovery Facility

  • Kevin Torrens, Brown and Caldwell

Beneficial Use of Coal Combustion Residuals for Closure of Coal Ash Impoundments

  • Rick Buffalini, Civil & Environmental Consultants, Inc.

Santa Clara County Composting Processing Capacity and Organics Diversion Study

  • Leslie Lukacs and Tracie Bills, SCS Engineers

Optimization of Leachate Pretreatment Plant Operations in Response to Complex Leachate Quality

  • Jesse Varsho, Geosyntec Consultants

Super Absorbent Polymers to Manage Water During Coal Ash Excavation & Disposal

  • Milind Khire, University of North Carolina - Charlotte

Organics Diversion - A Western Canada Success Story: How it is Significantly Reducing our Trash

  • Wilbert Yang, Tetra Tech

Troubleshooting a Leachate Evaporator System with Scaling Issues (Case Study)

  • Rohan Menon, Waste Management

Landfill Leachate Impacts from Coal Ash and Exploration & Production Wastes

  • Ivan Cooper, Civil & Environmental Consultants, Inc.

12:00 to 1:30 pm –
Lunch & Poster Viewing

1:30 to 3:00 pm –
Session Six

Track A

CH4 Oxidation

Track B


Track C

Challenging/Emerging Contaminants in Leachate

Moderator: Roger Green, Waste Management

Moderator: Chris Eichelberger, Agru America

Moderator: Kurt Shaner, Waste Connections

Methane Oxidation: Field-Scale Test Sections Experiment

  • Tarek Abichou, Florida State University

Long-Term Performance Analysis of Double Composite Liner Systems: Measured and Modeled Leachate Leakage

  • Max Krause, US EPA, Office of Research & Development

Leachate Treatment for Non-Traditionally Regulated Compounds

  • Patrick Stanford, Rochem Americas, Inc.

Methane Oxidation Capacity of Un-composted Yard Waste and Other Waste Materials

  • Gomathy Iyer, University of Texas-Arlington

Observed Variation in the Direct Shear Test Method and Effect on Slope Stability Conformance Testing

  •   Christopher Richgels, Agru America

Comprehensive Treatability Evaluation of 1,4-Dioxane Removal from Landfill Leachate

  • Chao Zhou, Geosyntec Consultants 

Engineering Testing of a Methanotroph-Enriched Landfill Bio-cover for Brady Road Resource Management Facility in Winnipeg, Manitoba, Canada

  • Monika Niemczyk, KGS Group

EVOH Geomembranes – Landfill Cover Case History

  • Edgard Chow, Kuraray America Inc.

What Are Critical Factors in Understanding Actual Risks of an Emerging Contaminant-- the Inaccurate Health Concern of 1,4-Dioxane and the Increasing Requests to Monitor in Groundwater at Municipal Solid Waste Landfills

  • Louis Bull, Waste Management

Treatment of Leachate Organic Matter Through Sun-light Driven Photolysis

  • Duncan Lozinski, University of Central Florida

3:00 to 3:30 pm –
Coffee Break

3:30 to 5:00 pm –
Session Seven

Track A

Temperature Monitoring and Control

Track B

Landfill Air Regulations

Track C


Moderator: Mike Beaudoin, Republic Services

Moderator: Matt Stutz, Weaver Consultants

Moderator: Craig Bartlett, Region of Durham (Ontario, CA)

Continued Development of Temperature and Pressure Instrumentation for Elevated Temperature Landfills

  • Nicholas Yafrate, Geosyntec Consultants

PANEL DISCUSSION:  Evolving Landfill Air Regulations, Interpretations, and Enforcement Initiatives Under a New Administration

  • Matt Stutz, Weaver Consultants Group
  •  Amy Van Kolken Banister, Waste Management
  • Niki Wuestenberg, Republic Services 
  • Kerry Kelly, Waste Management
  • Patrick Sullivan, SCS Engineers

Time for a Change? The Challenges and Lessons Learned for the Transition from Windrow Operations to Aerated Static Pile Composting

  • Maura Dougherty, Cornerstone Environmental Group

Using Technology to Identify and Combat Increased Subsurface Temperatures at an MSW Landfill

  • Cody Lee Daigle, Tetra Tech

When Compost Does Bad Things to Groundwater

  • David Tonjes, State University of New York-Stony Brook 

Preventing Formation of Elevated Temperature Conditions in Landfill – Design Features for Management of Liquids and Gas Pressure

  • Ali Khatami, SCS Engineers

Correlating Water Quality Types to Groundwater Contamination at Compost Sites

  • John Norgard, Stony Brook University

Heat Exchange at Landfills: Evaluation of Preliminary Data from an Instrumented Municipal Solid Waste Landfill

  • Leticia Nocko, University of California-San Diego

What Works. Ten Years of Odor Control Evolution in the (Food and Source Separated Organic) Waste Processing Industry

  • Kyle Muffels, GHD

5:00 to 6:30 pm –
Reception & Poster Viewing

Wednesday, February 14, 2018

7:00 to 8:15 am –
Continental Breakfast

8:30 to 9:45 am –
Session Eight

Track A

Sulfur in Landfill Gas

Track B

Testing/Measurement of Elevated Temperature Landfills

Track C

Landfill Gas Management

Moderator: Frank DeOrio, O'Brien & Gere

Moderator: Navid Jafari, Louisiana State University

Moderator: Chris Bareither, Colorado State University

New Source Review – The Stink of Permitting Projects at High TRS Landfills (and Other Wonderful Landfill Gas Related Air Permitting Topics)

  • Michael Trupin, Trinity Consultants

Reactivity Test for Quantifying Heat Generation of Wastes

  • Navid Jafari, Louisiana State University

The Influence of Waste Moisture Enhancement Strategies on Landfill Gas Generation

  • Christopher Bareither, Colorado State University

Causes of Increasing Sulfur Content in California Landfill Gas

  • Patrick Sullivan, SCS Engineers

Health and Safety Protocols for Investigating Elevated Temperature Landfills

  • Davis Garrett, Geosyntec Consultants

Approaches to Modeling Landfill Gas at a Multiple Phase Site

  •  Lori Clark, State University of New York-Stony Brook

A Methodology to Project Hydrogen Sulfide Concentration in Landfill Gas (LFG) Based on Historical Data

  • Bishow Shaha, Florida Atlantic University

Solar Low-Flow Pumps Boost Iowa Landfill’s Gas Recovery, Address Groundwater, With Cost Savings

  • Mark Bertane, Blackhawk Technology Company

9:45 to 10:00 am –
Coffee Break

10:00 to 11:15 am –
Session Nine

Track A

Landfill Emissions II

Track B

Health & Safety

Track C

Landfill Planning/Operations

Moderator: Jim Levis, North Carolina State University

Moderator: Sarah Foster, CPF Associates


Air Emissions Compliance and Emission Rate Analysis for a Municipal Solid Waste Landfill in Florida, USA

  • Samir Ahmed and Kwasi Badu-Tweneboah, Geosyntec Consultants

Public Health Considerations Related to Use of Odor Control Products at Landfills

  • Sarah Foster, CPF Associates, Inc.

Landfill Development Optimization: A Case Study of Waste Management Planning and Design, Waterloo Landfill Site, Regional Municipality of Waterloo

  • Tracy Annett, Regional Municipality of Waterloo (Canada)

A Solid Waste Emissions Estimation Tool (SWEET) for Quantifying GHG Emissions Reduction from Alternative Waste Management Strategies

  • Alexander Stege, SCS Engineers

Reducing the Frequency and Severity of Waste Collection Accidents with Video-Based Safety and Analytics

  • Jason Palmer, SmartDrive Systems, Inc.

Evaluating the Potential Impact of Landfill Mining on Groundwater Quality

  • William Soukup,  Cornerstone Environmental Group