Skip to Main Content
(Press Enter)

/ Environmental /
Environmental
Science Research

WM’s professional staff are encouraged to participate in the public and scientific community dialogue on environmental science and the performance of the environmental service facilities and technologies the company employs. Listed below are key contributions our experts have provided:

Abichou, T., Clark, J., Chanton, J., Hater, G., Green, R., Goldsmith, D., Barlaz, M., & Swan, N. (2012). “A New Approach to Characterize Emission Contributions from Area Sources During Optical Remote Sensing Technique Testing.” Journal of the Air & Waste Management Association, 62:1403-1410.

Abichou, T., Clark, J., Tan, S., Chanton, J., Hater, J., Green, R., Goldsmith, D., Barlaz, M., & Swan, N. (2010). “Uncertainties Associated with the Use of Optical Remote Sensing Technique to Estimate Surface Emissions in Landfill Applications.” Journal of the Air & Waste Management Association, 60:460–470.

Abichou, T., Banister, A., Barlaz, M., Bogner, J., Cusworth, D., Green, R., Huff, R., & Wuestenberg, N. (2020). Session Nine: Fugitive Air Emissions Workshop. Global Waste Management Symposium, Indian Wells, CA. February 23-26, 2020.

Babilotte, A., Green, R., Hater, G., Watermolen, T., & Staley, B. (2009). “Field Intercomparison of Methods to Measure Fugitive Methane Emissions on Landfills.” In Proceedings Sardinia Symposium 2009, Cagliari, Sardinia, October 5-9, 2009.

Babilotte, A., Green, R., Hater, G., Watermolen, T., & Staley, B. (2010). “Field Intercomparison of Methods to Measure Fugitive Methane Emissions,” Proceedings of the Global Waste Management Symposium, San Antonio, TX, October 3-6, 2010.

Barlaz, M.A., Chanton, J.P., & Green, R.B. (2009). “Controls on Landfill Gas Collection Efficiency: Instantaneous and Lifetime Performance.” Journal of the Air & Waste Management Association 59:1399-1404.

Bel Hadj Ali, N., Abichou, T., & Green, R. (2020). “Comparing estimates of fugitive landfill methane emissions using inverse plume modeling obtained with surface emission monitoring (SEM), drone emission monitoring (DEM), and downwind plume emission monitoring (DWPEM).” Journal of the Air & Waste Management Association, 70:4, 410-424. https://doi.org/10.1080/10962247.2020.1728423

Cambaliza, M.O.L., Bogner, J.E., Green, R.B., Shepson, P.B., Harvey, T.A., Spokas, K.A., Stirm, B.H., & Corcoran, M. (2017). “Field measurements and modeling to resolve m2 to km2 CH4 emissions for a complex urban source: An Indiana landfill study.” Elementa: Science of the Anthropocene, 5:36. http://doi.org/10.1525/elementa.145

Chanton, J.P., Powelson, D.K., & Green, R.B. (2009). “Methane Oxidation in Landfill Cover Soils, Is a 10% Default Value Reasonable?” Journal of Environmental Quality, 38:654-663.

Chanton, J.P., Powelson, D.K., Abichou, T., Fields, D., & Green, R. (2008). “Effect of Temperature and Oxidation Rate on Carbon-isotope Fractionation during Methane Oxidation by Landfill Cover Materials.” Environmental Science and Technology 42:7818–7823.

Chanton, J.P. T. Abichou, G. Hater, R. Green and J. Bogner. (2010) “Methane Oxidation in Landfill Cover Soils,” Geotechnical Special Publication No. 199, 2896-2905. eds. Fratta, D., Muhunthan, B., and Puppala, A., ASCE, Baltimore.

Chanton, J., Abichou, T., Langford, C., Spokas, K., Hater, G., Green, R., Goldsmith, D., & Barlaz, M. (2011). “Observations on the Methane Oxidation Capacity of Landfill Soils.” Waste Management 31:914-925.

Chanton, J., Abichou, T., Langford, C., Hater, G., Green, R., Goldsmith, D., & Swan, N. (2011). “Landfill Methane Oxidation Across Climate Types in the U.S.” Environmental Science and Technology 45:313-319.

de la Cruz, F.B., Green, R.B., Hater, G.R., Chanton, J.P., Thoma, E.D., Harvey, T.A., & Barlaz, M.A. (2016). “Comparison of field measurements to methane emissions models at a new landfill.” Environmental Science & Technology, 50(17):9432-9441. https://doi.org/10.1021/acs.est.6b00415

Foster-Wittig, T., Thoma, E.D., Green, R.B., Hater, G.R, Swan, N.D. and Chanton, J.P., (2014). “Development of a Mobile Tracer Correlation Method for Assessment of Air Emissions from Landfills and Other Area Sources.” Proceedings of the Global Waste Management Symposium. Orlando, Florida. June 22-25, 2014.

Foster-Wittig, T.A., Thoma, E.D., Green, R.B., Hater, G.R., Swan, N.D., & Chanton, J.P. (2015). “Development of a mobile tracer correlation method for assessment of air emissions from landfills and other area sources.” Atmospheric Environment, 102:323–330. https://doi.org/10.1016/j.atmosenv.2014.12.008

Goldsmith, C.D., Chanton, J., Abichou, T., Swan, N., Green, R. & Hater, G. (2012) “Methane emissions from 20 landfills across the United States using vertical radial plume mapping.” Journal of the Air & Waste Management Association, 62:2, 183-197.

Green, R.B., Banister, A., Abichou, T., Scott, A., Howarth, E., Wight, B. (2022). “Landfill Methane Emission Quantification: Comparing Approaches with Different Spatial and Temporal Scales.” Global Waste Management Symposium, Indian Wells, CA, February 14-17, 2022.

Green, R.B., Hater, G.R, Swan, N.D., Chanton, J.P., & Foster-Wittig, T. (2014). “Comparison of Methane Emissions Measurements to U.S. Greenhouse Gas Reporting Program Values for Landfills without Gas Collection.” Proceedings of the Global Waste Management Symposium, Orlando, FL, June 22-25, 2014.

Green, R.B., Swan, N.D., Chanton, J., & Hater, G.R. (2012). “Measured and Modeled Methane Emissions at MSW Landfills Prior to Gas Collection System Installation.” Proceedings of the Global Waste Management Symposium, Phoenix, AZ, September 30-October 3, 2012.

Green, R.B., Swan, N.D., Thoma, E.D., Footer, T.L., Chanton, J. and Hater, G.R. (2012) “Measured and Modeled Methane Emissions at Closed MSW Landfills without Gas Collection,” Proceedings of the Global Waste Management Symposium, Phoenix, AZ September 30-October 3, 2012.

Green, R.B., Hater, G.R., Thoma, E.D., DeWees, J., Rella, C.W., Crosson, E.R., Goldsmith, C.D., & Swan, N. (2010). “Methane Emissions Measured at Two California Landfills by OTM-10 and an Acetylene Tracer Method.” Proceedings of the Global Waste Management Symposium, San Antonio, TX, October 3-6, 2010.

Green, R.B., Hater, G.R., Goldsmith, C.D., Chanton, J.P., Swan, N., & Abichou, T. (2009). “Estimates of Methane Emissions from Three California Landfills Using Two Measurement Approaches.” Presented at: Air & Waste Management Association First International Greenhouse Gas Measurement Symposium, San Francisco, CA, March 22-25, 2009.

Green, R.B., Tolaymat, T., Hater, G.R., Barlaz, M.A., Powell, J., Black, P., Bronson, D. (2008) “Solid Waste Decomposition at the Outer Loop Landfill Bioreactor,” Presented at the 5th Intercontinental Landfill Research Symposium, Copper Mountain, CO, September 10-13, 2008.

Kormi, T., Bel Hadj Ali, N., Abichou, T. & Green, R. (2017). “Estimation of landfill methane emissions using stochastic search methods.” Atmospheric Pollution Research, 8(4):597-605. https://doi.org/10.1016/j.apr.2016.12.020

Kormi, T., Mhadhebi, S., Bel Hadj Ali, N., Abichou, T. & Green, R. (2018). “Estimation of fugitive landfill methane emissions using surface emission monitoring and Genetic Algorithms optimization.” Waste Management, 72: 313-328. https://doi.org/10.1016/j.wasman.2016.11.024

Sparrow, K.J., Chanton, J.P., Green, R.B., Scheutz, C., Hater, G.R., Wilson, L.C., & Abichou, T. (2019). “Stable isotopic determination of methane oxidation: When smaller scales are better.” Waste Management, 97:82–87. https://doi.org/10.1016/j.wasman.2019.07.032

Thoma, E.D., Thorneloe, S.A., Segall, R.R., Green, R.B., Hater, G.R., Hashmonay, R.A., Modrak, M.T., Chase, M.J., & Goldsmith, C.D. (2008). “Development of EPA OTM 10 for Landfill Applications, Interim Report 2.” Proceedings of the Global Waste Management Symposium, Copper Mountain, CO, September 7-10, 2008.

Thoma, E.D., Green, R.B., Hater, G.R., Goldsmith, C.D., Swan, N.D., Chase, M.J., & Hashmonay, R.A. (2009). “Development of EPA OTM 10 for Landfill Applications.” Journal of Environmental Engineering 136:769-776 (2009).

Tolaymat, T.M., Green, R.B, Hater, G.R., Barlaz, M.A., Black, P., Bronston, D., & Powell, J. (2010). “Evaluation of Landfill Gas Decay Constant for Municipal Solid Waste Landfills Operated as Bioreactors.” Journal of the Air & Waste Management Association 60:91-97.

Abitchou, T., Johnson, T., Mahieu, & Chanton, J.P. (2010). Developing a design approach to reduce methane emissions from California landfills. Proceedings of the 21st Geocongress, West Palm Beach, FL.

Abitchou, T., Kormi, T., Yuan, L., Johnson, T., & Escobar, F. (2015). Modeling the effects of vegetation on methane oxidation and emissions through soil landfill final covers across different climates. Waste Management, 36, 230–240.

Barlaz, M.A., Green, R.B., Chanton, J.P., Goldsmith, C.D. & Hater, G.R. (2004). “Evaluation of a Biologically Active Cover for Mitigation of Landfill Gas Emissions.” Environmental Science and Technology 38:4891-4899.

Cabral, A.R., Moreira, J.V., & Jugnia, L.B. (2010). Biocover performance of landfill methane oxidation: Experimental results. Journal of Environmental Engineering, August 2010, 785–793.

Johnson, T. (2009). Course on landfill capping, emissions and methane oxidation—A closer look. Alberta Research Council, Edmonton, Alberta.

Johnson, T. (2009). Presentation on landfill gas control and emissions for landfill cover systems. Minnesota Environmental Initiative (MEI) Stakeholder meeting, St. Paul, MN.

Johnson, T. (2009). Workshop on landfill gas control and emission and ET cover case studies. RWQCB Water Board, Fresno, CA.

Khire, M., et al. (2012). Estimation of vertical flux in an instrumented earthen cover. Global Waste Management Symposium 2012 Proceedings, Phoenix, AZ.

Letourno M., Cabral, A.R., & Johnson, T. (2011). Evaluation of candidate materials for the construction of a passive methane oxidation biocover. Thirteenth International Waste Management and Landfill Symposium, Sardinia, S. Margherita di Pula, Cagliari, Italy.

McGrath, A.E., Upson, G.L., & Caldwell, M.D. (2007). Evaluation and mitigation of landfill gas impacts on cadmium leaching from native soils. Groundwater Monitoring and Remediation, 4, 99-109.

Morris, J.W.F., Caldwell, M.D., Obereiner, J.M., O’Donnell, S.T., Johnson, T.R., & Abichou, T. (2018). Modeling methane oxidation in landfill cover soils as an indicator of functional stability with respect to gas management. Journal of the Air & Waste Management Association, DOI: 10.1080/10962247.2018.1500403

Nandanga, E., Cabral, A.R., Bradley, R. & Johnson T. (2013). Potential effect of vegetation on methane oxidation efficiency of biocovers: Laboratory and field experiment. Fifteenth International Waste Management and Landfill Symposium, Sardinia, S. Margherita di Pula, Cagliari, Italy.

Roncato, C., Letourneau, M., & Cabral, A.R. (2010). Comparison between field and laboratory methane oxidation rates. Proceedings of the 21st Geocongress, West Palm Beach, FL.

Gross, B., et al. (2011). Numerical examination of runoff in the water balance of an evapotranspirative cover. Journal of Environmental Quality (pending journal review).

Hardt, C. (2008). Numerical evaluation of preferential flow through evapotranspirative landfill covers. Master’s thesis, Department of Civil & Environmental Engineering, Michigan State University.

Johnson, T. (2009). Ecological restoration plan, ET covers, stormwater controls and wildlife habitat. Dickinson LF IDNR Meeting, Des Moines, IA.

Johnson, T. (2009). Workshop on ET cover technology. WDNR Meeting, Madison, WI.

Johnson, T. (2010). Modern landfill water balance, and alternative final covers and landfill gas and emission control. USEPA ET Cover Workshop, Austin, TX.

Johnson, T. (2011). ET cover role in ecological restoration. IDNR Offices, Des Moines, IA.

Johnson, T. (2011). Modern landfill water balance, and case studies from WM’s alternative final cover program. USEPA ET Cover Workshop, Denver, CO.

Kaushik, T., Khire, M.V., Johnson, T.J., & Caldwell, M.D. (2014). Surface runoff at an instrumented catchment-scale water balance final cover. ASCE Geo-Congress Symposium, Atlanta, GA, (accepted).

Khire, M., et al. (2014). Catchment-scale hydrology of a water balance final cover located in Texas. Global Waste Management Symposium Proceedings, Orlando, FL.

Khire, M., & Johnson, T. (2010). Effect of geocomposite drainage layer on water balance of evapotranspiration cap lysimeters. Global Waste Management Symposium Proceedings, San Antonio, TX.

Khire, M., & Mijares, M. (2008). Influence of waste layer on percolation estimates for earthen caps in sub-humid climates. GeoCongress, American Society of Civil Engineers, New Orleans, LA.

Khire, M.V. (2016). Geoclimatic design of water balance covers for municipal solid waste landfills in Texas. Lone Star Chapter of SWANA.

Mijares, M., Khire, M. & Johnson, T. (2009). Soil water storage in lysimeters versus actual earthen caps for landfill applications. GeoFlorida, American Society of Civil Engineers, West Palm Beach, FL. In preparation.

Mijares, R.G., Khire, M.V., & Johnson, T.R. (2011). Field scale evaluation of lysimeters versus actual caps. Geotechnical Testing Journal, 35(1).

Mijares, R., Khire, M., Benson, M., & Simunek, J. (2009). Preferential flow through earthen caps. Water Resources Research. In preparation.

Bull, L.P. (2009). Alternative landfill covers—Technical and regulatory considerations for continued progress. Colorado Department of Public Health and Environment (CDPHE) Workshop, Denver, CO.

Bull, L.P., & Dwyer, S.F. (2006). Evaluating the VADOSE/W model for deployment of evapotranspiration (ET) covers in cold and wet climates. Waste Tech Symposium, Phoenix, AZ.

Bull, L.P., & Dwyer, S.F. (2008). Establishing a practical flux performance criterion for Subtitle D alternative final cover systems. Global Waste Symposium, Copper Mountain, CO.

Bull, L.P. & Dwyer, S.F. (2008). Performance criteria for alternative final cover systems on lined RCRA Subtitle D landfills. Global Waste Symposium, Copper Mountain, CO.

Bull L.P., Dwyer, S.F., & Wampler, S. (2010). Alternative final cover (AFC) design report. Prepared for U.S. EPA and Tribal EPA, Tooele County, UT.

Johnson, T. (2008). Alternative covers workshop. International Phytotechnology Society, Raleigh, NC.

Lakhouit, A., Shirmer, W., Johnson, T., Cabana, H., & Cabral, A.R. (2014). Evaluation of the efficiency of an experimental biocover to reduce BTEX emissions from landfill biogas. Chemosphere, 97, 98–101.

Obereiner, J. (2009). Alternative landfill covers—building a sustainable final cover at Greater Wenatchee Regional Landfill WDOE and CDHD meeting, Wenatchee, WA.

Prucha, C.P., & Johnson, T.J. (2008). Alternative landfill covers—Current practice and key technical considerations. Presentation at Federation of New York Solid Waste Associations Annual Conference.

Saghaei, B., Khire, M., Caldwell, M., & Johnson, T. (2020). Field-scale evaluation of evapotranspiration from a landfill cover. Proceedings of ASCE GeoCongress 2020 Geo-Systems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics, Minneapolis, MN, 292–298.

Bull, L.P. (2019). The challenge of emerging contaminants in the environment. The Colorado Professional Geologist, 40 (2).

Bull, L.P., Obereiner, J., Verwiel, M., & Wampler, S. (2004). Reducing potential for landfill gas impacts to groundwater, another potential advantage of alternative landfill covers. SWANA, 9th Annual Landfill Symposium, Monterey, CA.

Bull, L.P., & Wampler, S.W. (2006). Landfill impacts to shallow groundwater: What is the real issue? Presentation at Colorado SWANA Conference.

Caldwell, M.D., & Baker, J.A. (2006). Aerobic bioremediation of vinyl chloride in groundwater at a solid waste landfill using a vadose zone air injection trench. WasteTech Landfill Technology Conference Proceedings, Phoenix, AZ.

Caldwell, M.D., & Fischer, D.A. (2008). Remote analytical and telemetry systems for groundwater monitoring. Global Waste Management Symposium, Copper Mountain, CO.

Caldwell, M.D., & Wallis, E.E. (2006). An empirical evaluation of impacts to groundwater from Subtitle D-lined solid waste disposal cells. WasteTech Landfill Technology Conference Proceedings, Phoenix, AZ.

McGrath, A.E., Upson, G.L., & Caldwell, M.D. (2007). Evaluation and mitigation of landfill gas impacts on cadmium leaching from native soils. Groundwater Monitoring and Remediation, 4, 99–109.

Morell, D., Verwiel, M., Thrupp, G., & Fowler, W. (2007). Study of basalt dikes influence on groundwater flow, Waimanalo Gulch Sanitary Landfill, Oahu, Hawaii. International Solid Waste Symposium, Sardinia, Italy.

Ramaley, S.B. (2011). Use of investigative tools to evaluate the source of landfill impacts to groundwater. Clemson Hydrogeology Symposium.

Verwiel, M., Obereiner, J., & Seyfried, S. (2000). Effects of landfill gas on groundwater quality at a municipal solid waste facility. Arizona Solid Waste Conference, Tucson, AZ.

Verwiel, M., & Prucha, C.P. (2006). The effects of well integrity on groundwater monitoring and conceptual model development. Presentation at Engineering Society of Detroit Annual Conference, Detroit, MI.

Verwiel, M., Thrupp, G., & Purdy, S. (2001). Landfill expansion beneath the water table in central Arizona, May 2001. International Landfill Symposium Proceedings, Sardinia, Italy.

Johnson, T.R., Khire, M.V., and Obereiner, J.M., Long-Term Trends in Leachate PFAS Concentrations, Global Waste Management Symposium Proceedings, Palm Desert, CA. 2022.

Hagedorn, B., Kerfoot, H., Verwiel, M., & Matlock, B. (2016). Assessing landfill gas age and attenuation characteristics—Geochemical constraints from a municipal solid waste landfill in Southern California. Proceedings G WMS, Indian Wells, CA.

Kerfoot, H., Hagedorn, B., & Verwiel, M. (2013). Evaluation of the age of landfill gas methane in landfill gas–natural gas mixtures using co-occurring constituents. Environmental Science: Processes & Impacts.

Kerfoot, H., & Verwiel, M. (2012). Evaluation of Methane Sources in Mixtures of Natural Gas and Biogas. Battelle Conference, Monterey, CA.

Verwiel, M. (2008). Case Study on the Role of Monitoring Well Structural Integrity on a VOC Monitoring Program at a Hazardous Waste Facility in the Western United States. ESD 17th Annual Michigan Solid Waste Conference.

Abichou, T., Barlaz, M., Green, R. and Hater, G. (2013) “The Outer Loop bioreactor: A case study of settlement monitoring and solids decomposition” Waste Management 33:2035-2047.

Abichou, T., Barlaz, M., Green, R. and Hater, G. (2013) “Liquid Balance Monitoring Inside Conventional, Retrofit, and Bioreactor Landfill Cells” Waste Management 33:2006-2014.

Banister, A., McCabe, C., McGuffey, M., Stutz, M., Subramaniam, P., & Wuestenberg, N. (2019). MSW landfill air rules: Transitioning from old to new. Air and Waste Management Association Webinar.

Bull L.P., & Franc, M. (2015). NORM/TENORM waste acceptance considerations. White paper prepared for U.S. EPA and Tribal EPA. Tekoi Landfill, Tooele County, UT.

Burrows, R.E., Grams, N.E., Davis, J., & Bull, L.P. (2019). When matrix matters: A case study in dirty water and clean method detection limits. In M. Brisson (Ed.), STP1618-EB Detection Limits in Air Quality and Environmental Measurements (77–87).

Foody, K., Funderburg, M., & Whittington, B. (2019). Advantages of single source contracting in-plant CCR services. World of Coal Ash Conference, St. Louis, MO.

Gibbons, R.D., & Bull, L.P. (2006). Statistically based data evaluation methodologies for municipal solid waste leachate. Waste Tech Landfill Technology Conference, Phoenix, AZ.

Khire, M.V., Saravanathiiban, D.S., Verwiel, M., Prucha, C.P., & Johnson, T.J. (2015). Stormwater sediment filtration using sand versus synthetic fibers. American Society of Civil Engineers, Geotechnical Special Publication.

Michigan Waste and Recycling Association (2019). Influent landfill leachate PFOA & PFOS contribution to Michigan water resource recovery facilities. Michigan Department of Environment, Great Lakes, and Energy, March 2019.

Nash, K., Funderburg, M., & Kamp, R. (2019). Best practices during closure. World of Coal Ash Conference, St. Louis, MO.

Ramaley, S.B., Wiseman, L., Sterling, L., Gabel, C., & Foster, J. (2015). Challenging traditional regulatory approaches to landfill permitting and construction. Presentation at WASTECON.

Suchomel, M., Verwiel, M., & Thrupp, G. (2011). A new method for calculating waste acceptance criteria for soil at landfills. International Solid Waste Symposium, Sardinia, Italy.

Verwiel, M., Cetrullo, J., Baquerizo, E., Jercan, M., & Caldwell, M. (2007). Applied Landfill Informational Analysis System (ALIAS): Development of a relational database system used to analyze the effects of landfill operational performance characteristics. International Solid Waste Symposium, Sardinia, Italy.

Caldwell, M.D., Obereiner, J., & Morris, J.W. (2016). Case study for prediction of a performance-based PCC term for LFG collection systems using passive controls. Global Waste Management Symposium, Indian Wells, CA.

Gibbons, R.D., Morris, J., Prucha, C., Caldwell, M.D., & Staley, B. (2014). Longitudinal data analysis in support of functional stability concepts for leachate management at closed municipal landfills. Waste Management, 34(9), 1674–1682.

Gibbons, R.D., Prucha, C.P., & Caldwell, M.D. (2007). Longitudinal analysis of leachate data from closed MSW landfill cells. WasteTech Landfill Technology Conference Proceedings, Miami, FL.

Morris, J.W., Caldwell, M.D., & Bull, L.P. (2008). Leachate trends, end use, and the ‘sustainable’ landfill. SWANA Landfill Symposium, Palm Springs, CA.

Morris, J.W., Caldwell, M.D., & Bull, L.P. (2012). Application of a performance-based methodology to evaluate optimization and completion of post-closure care at a municipal landfill. Global Waste Management Symposium, Phoenix, AZ.

Morris, J.W., Caldwell, M.D., Bull, L.P., Crest, M., & Ackerman, A. (2013). Functional stability and completion of post-closure care at municipal landfills: Findings from application of a performance-based methodology. International Waste Management and Landfill Symposium, Sardinia, Italy.

O’Donnell, S.T., Caldwell, M.D., Barlaz, M.A., & Morris, J.W.F. (2018). Case study comparison of functional stability vs. organic stability approaches for assessing threat potential at closed landfills in the USA. WM, 75, 415–426.

Prucha, C.P. (2004). Ending post closure care. Presentation at WM, Niagara Frontier Section Annual Meeting.

Verwiel, M., & Baker, J. (2005). Implementation of the EREF guidance for post closure care modifications: A case study of Olympic View Sanitary Landfill. Waste Expo, Las Vegas, NV.

Bull, L. (2010). Sustainable remediation panel—Is it cost-effective and feasible to implement renewable energy solutions at remediation sites? Remediation, 20, 33–138.

Holland, K.S., Lewis, R.E., Tipton, K., Karnis, S., Dona, C., Petrovskis., E., Bull, L.P., Taege, D., & Hook, C. (2011). Framework for integrating sustainability into remediation projects. Remediation, 21(3), 7–38.

Lowe, J., Funderburg, M., & Fedorka, B. (2019). Excavation and beneficiation considerations. World of Coal Ash Conference, St. Louis, MO.

Caldwell, M.D., Delfino, T., & Green, R. (2018). Evaluating landfill liquids to predict elevated temperature conditions. Global Waste Management Symposium, Indian Wells, CA.

Caldwell, M.D., Delfino, T., & Jafari, N.H. (2020). Modeling liquids removal as an elevated temperature mitigation or prevention option for MSW landfills. Global Waste Management Symposium, February 2020, Indian Wells, CA.

Fathinezhad, A., Jafari, N.H., Oldenburg, C., & Caldwell, M.D. (2020). Investigating air intrusion and aerobic reactions in municipal solid waste landfills. American Geophysical Union Fall Conference, December 2020.

Fathinezhad, A., Jafari, N.H., Oldenburg, C., & Caldwell, M.D. (2022). Numerical Investigation of Subsurface Aerobic Reactions that Facilitate Heat Generation and Accumulation in MSW Landfills, Global Waste Management Symposium. Indian Wells, CA.

Johnson, T., Khire, M., & Holt, R. (2018). Heat generation and heat transfer in MSW landfills using geothermal modeling. Global Waste Management Symposium, Indian Wells, CA.

Johnson, T., Khire, M. & Holt, R. (2020). Field data & modeling of heat generation rates in a municipal solid waste landfill located in Northeastern United States. Global Waste Management Symposium, February 2020, Indian Wells, CA.

Khire, M., & Johnson, T. (2018). Thermal properties of municipal solid waste from landfills located in sub-humid and humid locations. Global Waste Management Symposium, February 2018, Indian Wells, CA.

Khire, M., Johnson, T., & Holt, W. (2020). Geothermal modeling of elevated temperature landfills. Proceedings of ASCE GeoCongress 2020 Modeling, Geomaterials, and Site Characterization, Minneapolis, MN, 417–424.

Khire, M., Johnson, T., & Holt, W. (2022). Heat Loss in Landfills as a Function of Landfill Size, Proceedings of ASCE GeoCongress 2022, Charlotte, North Carolina.

Khire, M., Johnson, T., Meyer, W., & Holt, W. (2022). Field Temperatures and Geothermal Modelling of an MSW Landfill located in a Humid Climate, Proceedings of ASCE GeoCongress 2022, Charlotte, North Carolina.

Robinson, S. (2019). The precarious state of recycling as China closes its door to imports. EM: The Magazine for Environmental Managers. March 2019, 7–11.

Caldwell, M. (2008). Air injection into the vadose zone to aerobically degrade volatile organic compounds in groundwater and inhibit subsurface landfill gas migration. US Patent No. 7,618,547. Washington, DC: U.S. Patent and Trademark Office.