Pitt | Swanson Engineering
Casson, Leonard W
Civil & Environmental Engr
Casson, Leonard W
Academic Coordinator
Faculty
Associate Professor
Office: Benedum 742C
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Ph.D. in Civil Engineering, The University of Texas at Austin, 1987

M.S. in Environmental and Water Resources Engineering, Vanderbilt University, 1982

B.E. in Civil Engineering, Vanderbilt University, 1980

(2010) 2010 Water Environment Federation, Water Hero, http://wef.org/PublicInformation/page.aspx?id=140.

(2004) 2004 AWWA Management Division Best Paper Award for the paper entitled, "Utility-Based Analytical Methods to Ensure Public Water Supply Security" States, S.J., Scheuring, M., Kuchta, J., Newberry, J and Casson, L.W., Journal AWWA, Vol. 95, Issue 4, pp. 103.

(2003) 2003 Outstanding Professor of the Year-Pittsburgh Section of the American Society of Civil Engineers.

Casson, L.W., 2012, "Chapter 12: Safety, Health and Security of Wastewater Systems," in Water Environment Federation Manual of Practice No. 1.

States, S.J., Cyprich, G., Stoner, M., Wydra, F., Kuchta, J., Monnell, J., and Casson, L.W., 2012, "Bromide in the Allegheny River: A Possible Link with Marcellus Shale Operations," Water Environment Federation Annual Conference, New Orleans, LA.

Casson, L.W., Hunter, G.L., and Morley, K.M., 2011, "Wastewater Utility Resilience Assessment," 2011 Water Environment Federation Annual Conference, Los Angeles, CA.

Casson, L.W., Hunter, G.L., and Morley, K.M., 2011, "Wastewater Utility Resilience Assessment," WEF Disinfection 2011 Specialty Conference, Cincinnati, OH.

Casson, L.W., Morley, K.M., States, S.J., Watson, J.C., and Roberson, J.A., 2011, "Increasing Preparedness for Water Utilities, Local Health Departments, and First Responders," Journal of Emergency Management, vol.9, no.5, pp. 39-46.

Alig, C., Daly, L., Huban, C., and Casson, L.W., 2011, "Ferrate Versus Chlorine Disinfection: Disinfection By-Product Reduction and Other Benefits," WEF Disinfection 2011 Specialty Conference, Cincinnati, OH.

Daly, L., Alig, C., Huban, C., Casson, L.W., and Hunter, G., 2011, "Ferrate Versus Chlorine Disinfection: Disinfection By-Product Reduction and Other Benefits," 2011 Water Environment Federation Annual Conference, Los Angeles, CA.

Shaw, A.R., Casson, L.W., Hunter, G.L., and Rothermel, M.C., 2011, "Sustainable Disinfection: Incorporating Life-Cycle Assessment and Life-Cycle Costing into Disinfection Design and Operation," WEF Disinfection 2011 Specialty Conference, Cincinnati, OH.

Casson, L.W., 2010, "Chapter 19: Design of Municipal Wastewater Treatment Plants," in Water Environment Federation Manual of Practice No. 8, Fifth Edition, WEF Press.

Casson, L.W., Hunter, G.L., and Morley, K.M., 2010, "Wastewater Resilience Assessment," 2010 Water Environment Federation Annual Conference, New Orleans, LA.

Casson, L.W., Hunter, G.L., Shaw, A.R., and Rothermel, M.C., 2010, "Sustainability and Disinfection: Incorporating Life Cycle Assessment into Wastewater Disinfection Design," 2010 Water Environment Federation Annual Conference, New Orleans, LA.

Connell, G.F., Kapalavai, H., Casson, L.W., and Hunter, G., 2010, "Disinfection Dos and Don'ts - A primer on the safe and effective handling of chemicals," Water Environment and Technology, vol.22, no.6.

Hunter, G.L., Casson, L.W., and Morley, K.M., 2010, "Wastewater Utility Resilience Assessment," 25th Annual WaterReuse Symposium, Washington, DC.

Casson, L.W., 2009, "Chemical, Biological and Radiological Contaminants of Concern for Wastewater Collection and Treatment Systems; Development of a Prioritization Framework and Application to Your System," 2009 Water Environment Federation Annual Conference, Orlando, FL.

Casson, L.W., Hunter, G.L., Marriott, J., and Shaw, A., 2009, "Sustainable Disinfection: What does it mean? Is it possible? How do we get there?," 2009 Water Environment Federation Disinfection Specially Conference, Atlanta, GA.

Casson, L.W., Hunter, G.L., Marriott, J., and Shaw, A.R., 2009, "Sustainability and Disinfection: How to Incorporate Life Cycle assessment into Wastewater Disinfection Design," 2009 Water Environment Federation Annual Conference, Orlando, FL.

Hunter, G.L., Shaw, A., Casson, L.W., and Mariott, J., 2009, "Disinfection Alternatives and Sustainability: Energy Optimization, Disinfection Efficiency, and Sustainability," 2009 IUVA North American Conference, Boston, MA.

Casson, L.W., and Hunter, G.L., 2008, "Safety Issues in Conventional and Emerging Disinfection Systems," World Water and Environmental Engineering, vol.31, no.2.

Casson, L.W., Hunter, G.L., and Marriott, J., 2008, "Disinfection Alternatives and Sustainability: Optimization of Engergy Usage, Disinfection Effectiveness and Sustainability," 2008 Water Environment Federation Annual Conference, Chicago, IL.

Casson, L.W., and Hunter, G.L., 2007, "Safety Issues in Conventional and Emerging Disinfection Systems," 2007 Water Environment Federation Annual Conference, San Diego, CA.

States, S., Stoner, M., Westbrook, C., Heza, D., and Casson, L.W., 2007, "Development of a Contamination Warning System for the Pittsburgh Water and Sewer Authority," AWWA Water Quality Technology Conference, Charlotte, North Carolina.

Casson, L.W., and Bess, J.W., 2006, "Chapter 3: Sodium Hypochlorite Generation," in Wastewater Disinfection Training Manual; ISBN 978-1-57278-235-8, Water Environment Federation.

Casson, L.W., and Bess, J.W., 2006, "On-Site Sodium Hypochlorite Generation," 2006 Water Environment Federation Annual Conference, Dallas, TX.

Casson, L.W., Hunter, G.L., and Bess, J.W., 2006, "The Challenge of the Future: Operating Emerging Disinfection Technologies," 2006 Water Environment Federation Annual Conference, Dallas, TX.

States, S.J., Wichterman, J., Cyprych, G., Kuchta, J., and Casson, L.W., 2006, "A Field Sample Concentration Method for Rapid Response to Security Incidents," Journal AWWA, vol.98, no.4, pp. 115-121.

Casson, L.W., 2005, "Water and Wastewater Infrastructure Security Issues: Impacts on Environmental Engineering Research and Design," ASCE Journal of Environmental Engineering, vol.131, no.10.

Casson, L.W., States, S.J., Wichterman, J., and Zimmerman, A., 2005, "Field Screening Techniques for Water and Wastewater Security Issues," 2005 Water Environment Federation Annual Conference, Washington, DC.

States, S.J., Newberry, J., Wichterman, J., Kuchta, J., Scheuring, M., and Casson, L.W., 2005, "Chapter 28: Rapid Analytical Techniques for Drinking Water Security Investigations," in Water Quality in the Distribution System;ISBN 1-58321-323-6, American Water Works Association.

Casson, L.W., States, S.J., Kuchta, J., Newberry, J., and Wichterman, J., 2004, "Detection Limits for Security-Based Rapid Analytical Techniques," 2004 AWWA Annual Conference and Exposition, Orlando, FL.

Casson, L.W., States, S.J., Kuchta, J., Newberry, J., and Wichterman, J., 2004, "Detection Limits for Security-Based Rapid Analytical Techniques," 2004 Florida Section of the American Water Works Association Annual Conference, Orlando, FL.

States, S.J., Newberry, J., Wichterman, J., Kuchta, J., Scheuring, M., and Casson, L.W., 2004, "Rapid Analytical Techniques for Drinking Water Security Investigations," Journal AWWA, vol.96, no.1, pp. 52-64.

Casson, L.W., Bess, J.W., Navin, T.J., and Lubie, D.B., 2003, "The Effect of On-Site Generated Ultra-Pure HypochloriteTM on Water and Wastewater Disinfection," 2003 Water Environment Federation Annual Conference, Los Angeles, CA.

Casson, L.W., States, S.J., Newberry, J., Wichterman, J., and Scheuring, M., 2003, "Rapid Toxicity Testing for Drinking Water Security (Microtox and Eclox)," 2003 Florida Section of the American Water Works Association Conference, Orlando, FL.

States, S.J., Newberry, J., Wichterman, J., Scheuring, M., and Casson, L.W., 2003, "Rapid Analytical Techniques for Drinking Water Security Investigations," 2003 AWWA WQTC, Philadelphia, PA.

States, S.J., Newberry, J., Wichterman, J., Scheuring, M., and Casson, L.W., 2003, "Rapid Toxicity Testing for Drinking Water Security (Microtox and Eclox)," 2003 AWWA WQTC, Philadelphia, PA.

States, S.J., Scheuring, M., Kuchta, J., Newberry, J., and Casson, L.W., 2003, "Utility-Based Analytical Methods to Ensure Public Water Supply Security," Journal AWWA, vol.95, no.4, pp. 103-115.

Casson, L.W., and Bess, J.W., 2002, "On-Site Sodium Hypochlorite Generation; ISBN 1-58716-094-3," CRC Press.

States, S.J., Scheuring, M., Kuchta, J., and Casson, L.W., 2002, "Microbiological Screening Methods for Ensuring the Security of Public Water Supplies," 2002 AWWA WQTC, Seattle, WA.

States, S.J., Tomko, R., Scheuring, M., and Casson, L.W., 2002, "Enhanced Coagulation and Removal of Cryptosporidium in Drinking Water Treatment," Journal AWWA, vol.94, no.11, pp. 67-77.

Casson, L.W., Edgar, W.W., Bess, J.W., Champlain, T., Hunter, G.L., Kennedy, B.E., and Wilson, F., 2001, "Wastewater Disinfection Using Sodium Hypochlorite Generated On-Site from Process Residuals," Florida Water Resources Journal.

Casson, L.W., Edgar, W.W., Hunter, G.L., Bess, J.W., Champlin, T., and Wilson, F., 2001, "Wastewater Disinfection Using Sodium Hypochlorite Generated On-Site From Process Residuals," 2001 Florida Water Resources Conference, Jacksonville, FL.

Casson, L.W., Edgar, W.W., Hunter, G.L., Bess, J.W., Champlin, T., and Wilson, F., 2001, "Wastewater Disinfection Using Sodium Hypochlorite Generated On-Site From Process Residuals," 2001 Water Environment Federation Annual Conference, Atlanta, GA.

States, S.J., Tomko, R., Scheuring, M., and Casson, L.W., 2001, "Enhanced Coagulation and Removal of Cryptosporidium in Drinking Water Treatment," 2001 AWWA WQTC, Nashville, TN.

Casson, L.W., 2000, "Water Supply and Treatment," in Standard Handbook of Environmental Science, Health, and Technology; ISBN 0-07-038309-X, J.H. Lehr, ed., McGraw-Hill, 13.110-13.125, New York.

Casson, L.W., Edgar, W.W., Bess, J.W., Reimers, R.S., and Wilson, F., 2000, "Sodium Hypochlorite Production from Landfill Ash Leachate: Pilot Testing and Full-Scale Application," 2000 Florida Water Resources Conference, Tampa, FL.

Casson, L.W., Edgar, W.W., Bess, J.W., Reimers, R.S., and Wilson, F., 2000, "Sodium Hypochlorite Production from Landfill Ash Leachate: Pilot Testing and Full-Scale Application," Water Environment Federation Specialty Conference, New Orleans, LA.

States, S.J., Scheuring, M., Evans, R., Buzza, E., Movhead, B., Gigliotti, T., and Casson, L.W., 2000, "Membrane Filtration as Post Treatment," Journal AWWA, vol.92, no.8, pp. 59-68.

Casson, L.W., and Hoffman, K.D., 1999, "HIV in Wastewater: Presence, Viability, and Risks to Treatment Plant Workers," HIV in Wasterwater: Presence, Survivability, and Risk to Wastewater Treatment Plant Workers, Monograph of the Water Environmetn Federation, 1-57278-151-3.

Casson, L.W., Edgar, W.W., Bess, J.W., Bramlett, D.S., Reimers, R.S., and Wilson, F., 1999, "Sodium Hypochlorite Production from Landfill Ash Leachate: Pilot Testing and Full-scale Application," Water Environment Federation Annual Conference, New Orleans, LA.

Gigliotti, T.M., States, S.J., and Casson, L.W., 1999, "Pilot-Scale Studies of Cryptosporidium Inactivation Using Ozone," 1999 AWWA WQTC, Tampa, FL.

Lue-Hing, C., Tata, P., and Casson, L.W., 1999, "HIV in Wastewater: Presence, Survivability, and Risk to Wastewater Treatment Plant Workers; ISBN 1-57278-151-3," Water Environment Federation, Monograph of the Water Environment Federation.

Casson, L.W., 1998, "Densities, Fate, and Transport of Pathogens in Biosolids," Water Environment Federation Annual Conference, Orlando, FL.

Casson, L.W., Kohler, T.M., and States, S.J., 1998, "Evaluation of a Conventional Drinking Water Treatment Facility Using Particle Size Distribution Measurements," ASCE Environmental Engineering Division Annual Conference, Chicago, IL.

Casson, L.W., and Hoffman, K.D., 1997, "Survival and Recovery of HIV in Wastewater," Water Environment Federation Annual Conference, Chicago, IL.

Casson, L.W., Ritter, M.D., Cossentino, L.M., and Gupta, P., 1997, "Survival and Recovery of Seeded HIV in Water and Wastewater," Water Environment Research, vol.69, no.2.

Casson, L.W., 1996, "Fate and Densities of Pathogens in Biosolids," Water Environment Federation Conference Workshop, Dallas , TX.

Evans, D.J., Casson, L.W., Sorber, C.A., Cockley, K.C., Keleti, G., and Sagik, B.P., 1995, "The Transport and Survivability of Selected Microorganisms in Sludge-Amended Soils Via Rainfall-Runoff Studies," Water Environment Federation Annual Conference, Miami Beach, FL.

Casson, L.W., Lawler, D.F., and Bogard, D.G., 1994, "Spectral Analysis of Fluid Flow in an Oschillating Grid flocculator," ASCE Journal of Engineering Mechanics, vol.120, no.2, pp. 346-367.

Ritter, M.D., Casson, L.W., Cossentino, L.M., and Gupta, P., 1994, "HIV in Wastewater: Survival and Recovery," Water Environment Federation Annual Conference, Chicago, IL.

Cockley, K.C., Casson, L.W., Sorber, C.A., Evans, D.E., Keleti, G., and Sagik, B.P., 1993, "Survival and Transport of Selected Pathogens in Sludge-Amended Soil," Water Environment Federation Annual Conference, Anaheim, CA.

Sorber, C.A., Casson, L.W., and Cockley, K.C., 1993, "A Study on the Survival and Transport of Pathogens in Sludge-Amended Soils," 15th Annual Federal Convention of the Australian Water and Wastewater Association, pp. 536-541, Queensland, Australia.

Casson, L.W., Sorber, C.A., Palmer, R.H., Enrico, A., and Gupta, P., 1992, "HIV Survivability in Wastewater," Water Environmetn Research, vol.64, no.3, pp. 213-215.

Casson, L.W., Sorber, C.A., Palmer, R.H., Enrico, A., and Gupta, P., 1991, "HIV Survivability in Wastewater," Symposium on the Survival of HIV in Environmental Waters, The Johns Hopkins University.

Battaglia, A., Pohland, F.G., Fox, P., and Casson, L.W., 1991, "Pittleach: A Numerical Model of Landfill Stabilization," ASCE 1991 Specialty Conference on Environmental Engineering, pp. 12-17, Reno, NV.

Jakubowski, W., Sykora, J.L., Sorber, C.A., Casson, L.W., and Gavaghan, P.D., 1991, "Determining Giardiasis Prevalence by Examination of Sewage," Water Science and Technology, vol.24, no.2, pp. 173-178.

Neufeld, R.D., and Casson, L.W., 1991, "HAZARDOUS AND INDUSTRIAL WASTES," Twenty-Third Mid-Atlantic Industrial Waste Conference, Technomic.

Sykora, J.L., Sorber, C.A., Jakubowski, W., Casson, L.W., Gavaghan, P.D., Shapiro, M.A., and Schott, J.M., 1991, "Distribution of Giardia Cysts in Wastewater," Water Science and Technology, vol.24, no.2, pp. 187-192.

Casson, L.W., and Gordon, A.R., 1990, "Evaluation of Drinking Water Treatment Facilities in Allegheny County."

Casson, L.W., and Lawler, D.F., 1990, "Flocculation in Turbulent Flow: Measurements and Modeling of Particle Size Distributions," Journal AWWA, vol.82, no.8, pp. 54-68.

Casson, L.W., Sorber, C.A., Sykora, J.L., Gavaghan, P.D., Shapiro, M.A., and Jakubowski, W., 1990, "Giardia in Wastewater - Effect of Treatment," Research Journal of the Water Pollution Control Federation, vol.62, no.5, pp. 670-675.

Al-Yousfi, A.B., Liaghat, A., Casson, L.W., and Quimpo, R.G., 1990, "Physical and Chemical Aspects of the Ashland Oil Spill," ASCE 1990 Specialty Conference on Environmental Engineering, pp. 875-876, Arlington, VA.

Watzlaf, G.R., and Casson, L.W., 1990, "Chemical Stability of Manganese and Iron in Mine Drainage Sludge: Effects of Neutralization Chemical, Iron Concentration, and Sludge Age," Mining and Reclamation Conference and Exhibition, pp. 3-9, Charleston, WV.

Watzlaf, G.R., and Casson, L.W., 1990, "The Solubility of Iron and Manganese in Mine Drainage Treatment Sludge," National Symposium on Mining, pp. 59-65, Knoxville TN.

Casson, L.W., 1989, "Flocculation in Turbulent Flow: Measurements and Modeling of Particle Size Distributions," American Filtration Society Annual Conference, pp. 419-426, Pittsburgh, PA.

Casson, L.W., and Al-Yousfi, B., 1989, "Physical/Chemical Aspects of the Ashland Oil Spill."

Casson, L.W., and Lawler, D.F., 1989, "Flocculation in Turbulent Flow: Measurement and Modeling of Particle Size Distributions," Fluid Particle Separation Journal, vol.2, no.2.

Casson, L.W., Sykora, J.L., Gavaghan, P.D., and Sorber, C.A., 1989, "Seasonal and Geographic Distribution of Giardia in Wastewater and Sludge," Water Pollution Control Federation Specialty Conference on Microbial Aspects of Surface Water Quality, Chicago, IL.

Lawler, D.F., and Casson, L.W., 1984, "Changes in Particle Size Distributions in Continuous-Flow Flocculation," American Water Works Association Annual Conference, Dallas, TX.

2012, "Bromide in the Allegheny River: A Possible Link with Marcellus Shale Operations," PWEA Marcellus Shale Conference, Pittsburgh, PA.

2012, "Bromide in the Allegheny River: A Possible Link with Marcellus Shale Operations," Third Annual Conference on the Health Effects of Shale Gas Extraction, Pittsburgh, PA.

2012, "Bromide in the Allegheny River: A Possible Link with Marcellus Shale Operations," WEFTEC 2012, the Water Environment Federation Annual Conference, New Orleans, LA.

2011, "Sustainability and Disinfection: Incorporating Life Cycle Assessment into Wastewater Disinfection Design," WEF Disinfection 2011 Specialty Conference, Cincinnati, OH.

2011, "Wastewater Resilience Assessment," ACE Preconference Workshop SUN02 - Risk Analysis and Management for Critical Asset Protection (RAMCAP) Methodology Training, Washington, DC.

2011, "Wastewater Utility Resilience Assessment," WEF Disinfection 2011 Specialty Conference, Cincinnati, OH.

2011, "Wastewater Utility Resilience Assessment," WEFTEC 2011, the Water Environment Federation Annual Conference, Los Angeles, CA.

Alig, C., Daly, L., Huban, C., and Casson, L.W., 2011, "Ferrate Versus Chlorine Disinfection: Disinfection By-Product Reduction and Other Benefits," WEF Disinfection 2011 Specialty Conference, Cincinnati, OH.

2010, "Sustainable Disinfection: What Does it Mean? Is It Possible? How Do We Get There?," 2010 Water Environment Federation Annual Conference, New Orleans, LA.

2010, "Wastewater Resilience Assessment," 2010 Water Environment Federation Annual Conference, New Orleans, LA.

Hunter, G.L., Casson, L.W., and Morley, K.M., 2010, "Wastewater Utility Resilience Assessment," 25th Annual WaterReuse Symposium, Washington, DC,.

2009, "Chemical, Biological and Radiological Contaminants of Concern for Wastewater Collection and Treatment Systems; Development of a Prioritization Framework and Application to Your System," 2009 Water Environment Federation Annual Conference, Orlando, Florida.

2009, "Fundamentals and Principles of Disinfection Design for Water Reclamation and Reuse," WEF Preconference Workshop W215 - Reclaimed Water Facilities: Meeting Existing and Emerging Challenges, Orlando, Florida.

2009, "Sustainability and Disinfection: How to Incorporate Life Cycle assessment into Wastewater Disinfection Design," 2009 Water Environment Federation Annual Conference, Orlando, Florida.

2009, "Sustainability and Disinfection: How to Incorporate Life Cycle Assessment into Wastewater Disinfection Design," Engineering Sustainability 2009, Pittsburgh, PA.

2009, "The "3-S" Concept - Safety, Security and Sustainability," PA-AWWA Essentials for Emergency Preparedness Seminar, Harrisburg, PA.

2009, "The "3-S" Concept - Safety, Security and Sustainability," PA-AWWA Essentials for Emergency Preparedness Seminar, Pittsburgh, PA.

Hunter, G.L., Casson, L.W., Marriott, J., and Shaw, A., 2009, "Sustainable Disinfection: What does it mean? Is it possible? How do we get there?," WEF Disinfection Specialty Conference, Atlanta, GA.

Hunter, G.L., Shaw, A., Casson, L.W., and Marriott, J., 2009, "Disinfection Alternatives and Sustainability: Energy Optimization, Disinfection Efficiency, and Sustainability," 2009 IUVA North American Conference, Boston, MA.

Hunter, G.L., Shaw, A., Casson, L.W., and Marriott, J., 2009, "Sustainability and Disinfection - How to Incorporate Life Cycle Assessment into Wastewater," Fifth International Congress on Ultraviolet Technologies, Amsterdam, The Netherlands.

2008, ""Disinfection Alternatives and Sustainability: Optimization of Energy Usage, Disinfection Effectiveness and Sustainability," 2008 Water Environment Federation Annual Conference, Chicago Illinois.

2008, "On-Site Generated Sodium Hypochlorite," PA-AWWA Chlorine Security Summit, Harmarville, PA.

2008, "Water 101 for Sales Practitioners of the Utility Service Co.," This course is an on-demand seminar developed and taught by Dr. Casson and provided through AWWA, Perry, Georgia.

2008, "Water Contaminants: Field Screening and Ultrafiltration Update," Water Security 2008: A Maryland and National Update, Baltimore, Maryland.

States, S.J., Carroll, J., Cyprych, G., Hayes, K., Kuchta, J., Little, M., Pyle, A., Stoner, M., Westbrook, C., and Casson, L.W., 2008, "An Accidental Contamination Event in the Pittsburgh Water Distribution System (A Case Study)," AWWA Water Security Congress, Cincinnati OH.

States, S.J., Hohman, B., Westbrook, C., Stoner, M., Heza, D., and Casson, L.W., 2008, "Challenge Studies of Pittsburgh's Pilot Contamination Warning System," AWWA Water Security Congress, Cincinnati, OH.

States, S.J., Hohman, B., Westbrook, C., Stoner, M., Heza, D., and Casson, L.W., 2008, "Challenge Studies of Pittsburgh's Pilot Contamination Warning System," the PA-AWWA Annual Conference, Valley Forge, PA.

2007, "Prioritization of C.B.R. Contaminants: Fate & Transport in Wastewater Collection & Treatment Systems," Presented at the "Security Tools for the Water Sector for Addressing C/B/R Contamination Events and Attacks on Cyber Security Systems for Process Control Operations", WEFTEC 2007 Preconference Workshop Sponsored by WERF, San Diego, CA.

2007, "Safety Issues in Conventional and Emerging Disinfection Systems," 2007 Water Environment Federation Annual Conference, Dallas, TX.

2007, "Wastewater Collection and Treatment, Safety, Security and Sustainability," WESTTEC 2007 hosted by WPWPCA, Pittsburgh, PA.

2007, "Water 101 for Sales, Marketing and Public Relations Practitioners," This course was developed and taught by Dr. Casson for AWWA, Chicago Illinois.

States, S., Stoner, M., Westbrook, C., Heza, D., and Casson, L.W., 2007, "Development of a Contamination Warning System for the Pittsburgh Water and Sewer Authority," AWWA Water Quality Technology Conference, Charlotte, North Carolina.

2006, "Drinking Water 101," Presented at the "First Response Strategies and Protocol for Water Utilities and Public Health Staff", AWWA, CDC & USEPA, Denver, CO.

2006, "Drinking Water 101," Presented at the "First Response Strategies and Protocol for Water Utilities and Public Health Staff", AWWA, CDC & USEPA, Los Angeles, CA.

2006, "Drinking Water 101," Presented at the "First Response Strategies and Protocol for Water Utilities and Public Health Staff", AWWA, CDC & USEPA, Providence, RI.

2006, "The Challenge of the Future: Operating Emerging Disinfection Technologies," 2006 Water Environment Federation Annual Conference, Dallas, TX.

Bess, J.W., and Casson, L.W., 2006, "On-Site Sodium Hypochlorite Generation," 2006 Water Environment Federation Annual Conference, Dallas, TX.

2005, "Development and Testing of a Field Concentration Method for Rapid Response to Security Incidents," 2005 Florida Section of the American Water Works Association Annual Conference, Orlando, FL.

2005, "Drinking Water 101," Presented at the "First Response Strategies and Protocol for Water Utilities and Public Health Staff", AWWA, CDC & USEPA, Annapolis, MD.

2005, "Drinking Water 101," Presented at the "First Response Strategies and Protocol for Water Utilities and Public Health Staff", AWWA, CDC & USEPA, Chicago Illinois.

2005, "Field Screening Techniques for Water and Wastewater Security Issues," 2005 Water Environment Federation Annual Conference, Washington, DC.

2005, "Wastewater Contaminant Prioritization Framework: Development and Use," Water Security Summit, WEF/USEPA, Chicago Illinois.

2005, "Wastewater Contaminant Prioritization Framework: Development and Use," Water Security Summit, WEF/USEPA, Philadelphia, PA.

2005, "Wastewater Contaminant Prioritization Framework: Development and Use," Water Security Summit, WEF/USEPA, Phoenix, AZ.

Navin, T.J., Casson, L.W., Bess, J.W., and Lubie, D.B., 2005, "The Effect of On-Site Generated Ultra Pure Hypochlorite on Wastewater Disinfection," Abstracts of the New York Water Environment Association Annual Meeting, New York, NY.

2004, "Detection Limits for Security-Based Rapid Analytical Techniques," 2004 AWWA Annual Conference, Orlando, FL.

2004, "Detection Limits for Security-Based Rapid Analytical Techniques," 2004 Florida Section of the American Water Works Association Annual Conference, Orlando, FL.

2004, "Drinking Water 101," First Responder Strategies & Protocol For Water Utilities and Public Health Staff, AWWA, Denver, CO.

2004, "Drinking Water 101," First Responder Strategies & Protocol For Water Utilities and Public Health Staff, AWWA/CDC, Atlanta, GA.

2004, "Drinking Water Security Incidents: What can I measure and what does it mean?," Pennsylvania AWWA Security Summit West, Pittsburgh, PA.

2004, "Evaluation of Rapid Field Testing Methodologies for Security Purposes," 2004 AWWA Annual Conference, Orlando, FL.

States, S.J., Kuchta, J., Wichterman, J., Newberry, J., and Casson, L.W., 2004, "How PWSA Uses Biotoxicity Monitoring and Rapid PCR," AWWA Water Security Congress, Charlotte, NC.

States, S.J., Wichterman, J., Nusser, E., Kuchta, J., Zimmerman, A., Cyprych, G., and Casson, L.W., 2004, "Field Screening Techniques for Security Issues," Abstracts of the 2004 AWWA WQTC, San Antonio, TX.

2003, "Rapid Toxicity Testing for Drinking Water Security (Microtox and Eclox)," 2003 Florida Section of the American Water Works Association Conference, Orlando, FL.

2003, "The Effect of On-Site Generated Ultra-Pure HypochloriteTM on Water and Wastewater Disinfection," 2003 Water Environment Federation Annual Conference, Los Angeles, CA.

2003, "Training Engineers to Ensure the Security of Public Water Supplies," 2003 American Society for Engineering Education Annual Conference, Nashville, TN.

States, S.J., Newberry, J., Wichterman, J., Kuchta, J., Scheuring, M., and Casson, L.W., 2003, "Rapid Analytical Techniques for Drinking Water Security Investigations," Abstracts of the 2003 AWWA WQTC, Philadelphia, PA.

States, S.J., Newberry, J., Wichterman, J., Scheuring, M., and Casson, L.W., 2003, "Rapid Toxicity Testing for Drinking Water Security (Microtox and Eclox)," Abstracts of the 2003 AWWA WQTC, Philadelphia, PA.

2002, "Bioterrorism in Drinking Water Treatment and Distribution Systems," Sixth Annual Elected Officials Retreat "Toward a Clean Water Future for Southwestern Pennsylvania" by the University of Pittsburgh Office of the Chancellor and the Institute of Politics.

2002, "Health Risks Associated with Wet Weather Flows," WEFTEC 2002 Pre-Conference Workshop entitled "Disinfection of Wet Weather Flows", Chicago Illinois.

2002, "Microbiological Screening Methods for Ensuring the Security of Public Water Supplies," 2002 Florida Section of the American Water Works Association Conference, Tarpon Springs, FL.

States, S.J., Scheuring, M., Kuchta, J., and Casson, L.W., 2002, "Microbiological Screening Methods for Ensuring the Security of Public Water Supplies," Abstracts of the 2002 AWWA WQTC, Seattle, WA.

2001, "Wastewater Disinfection Using Sodium Hypochlorite Generated On-Site From Process Residuals," 2001 Florida Water Resources Conference, Jacksonville, FL.

2001, "Wastewater Disinfection Using Sodium Hypochlorite Generated On-Site From Process Residuals," 2001 Water Environment Federation Annual Conference, Atlanta, GA.

States, S.J., Tomko, R., Scheuring, M., and Casson, L.W., 2001, "Enhanced Coagulation and Removal of Cryptosporodium in Drinking Water Treatment," Abstracts of the 2001 AWWA WQTC, Nashville, TN.

2000, "Sodium Hypochlorite Production from Landfill Ash Leachate: Pilot Testing and Full-Scale Application," 2000 Florida Water Resources Conference, Tampa, FL.

2000, "Sodium Hypochlorite Production from Landfill Ash Leachate: Pilot Testing and Full-Scale Application," Water Environment Federation Disinfection Specialty Conference, New Orleans, LA.

1999, "Sodium Hypochlorite Production from Landfill Ash Leachate: Pilot Testing and Full-scale Application," Water Environment Federation Annual Conference, New Orleans, LA.

Gigliotti, T.M., States, S.J., and Casson, L.W., 1999, "Pilot-Scale Studies of Cryptosporidium Inactivation Using Ozone," Poster Presentation 1999 AWWA WQTC, Tampa, FL.

1998, "Densities, Fate, and Transport of Pathogens in Biosolids," Water Environment Federation Annual Conference, Orlando, Florida.

1998, "Evaluation of a Conventional Drinking Water Treatment Facility Using Particle Size Distribution Measurements," ASCE Environmental Engineering Division Annual Conference, Chicago Illinois.

1997, "HIV in Wastewater: Presence, Viability, and Risks to Treatment Plant Workers," Metropolitan Water Reclamation District of Greater Chicago Research and Development Department 1997 Seminar Series.

1997, "Survival and Recovery of HIV in Wastewater," Water Pollution Control Federation Annual Conference, Chicago Illinois.

1996, "Fate and Densities of Pathogens in Biosolids," Water Environment Federation Pre-Conference Workshop, Dallas, TX.

Evans, D.E., Casson, L.W., Sorber, C.A., Cockley, K.C., Keleti, G., and Sagik, B.P., 1995, "The Transport and Survivability of Selected Microorganisms in Sludge-Amended Soils Via Rainfall-Runoff Studies," Abstracts of the Water Environment Federation Annual Conference, Miami Beach, FL.

1994, "HIV in Wastewater: Presence and Survivability," USEPA National Wastewater Technology Transfer Workshop, Kansas City, MO.

1994, "Survival of Selected Pathogens in Anaerobic Digestion," Water Environment Federation Annual Conference, Chicago Illinois.

Ritter, M.D., Casson, L.W., Cossentino, L.M., and Gupta, P., 1994, "HIV in Wastewater: Survival and Recovery," Abstracts of the Water Environment Federation Annual Conference, Chicago, IL.

1993, "HIV in Wastewater: Presence and Survivability," National Science Foundation Symposium on HIV in Environmental Waters, The Johns Hopkins University, Baltimore, MD.

Cockley, K.C., Casson, L.W., Sorber, C.A., Evans, D.E., Keleti, G., and Sagik, B.P., 1993, "Survival and Transport of Pathogens in Sludge-Amended Soil," Abstracts of the Water Environment Federation Annual Conference, Anaheim, CA.

1992, "HIV in Wastewater: Survivability and Concentration," IAWPRC Health-Related Microbiology Symposium, Washington, DC.

Gavaghan, P.D., Sykora, J.L., Casson, L.W., Lichte, M.D., and Jakubowski, W., 1992, "Viability and Infectivity of Giardia in Digested Sludge," Poster Presentation at the IAWPRC Health-Related Microbiology Symposium, Washington, DC.

1991, "HIV in Wastewater: Presence, Viability and Treatment," American Filtration Society Annual Conference, Atlanta, GA.

Palmer, R.H., Casson, L.W., Sorber, C.A., and Gupta, P., 1991, "Concentration and Assay of HIV in Wastewater," Abstracts of the Water Pollution Control Federation Annual Conference, Toronto, Ontario.

1990, "HIV Survival in Wastewater," Water Pollution Control Federation Annual Conference, Washington, DC.

Jakubowski, W., Sykora, J.L., Sorber, C.A., Casson, L.W., and Gavaghan, P.D., 1990, "Determining Giardiasis Prevalence by Examination of Sewage," Abstracts of International Symposium on Health-Related Water Microbiology, International Association on Water Pollution Research and Control, Tubingen.

Sykora, J.L., Sorber, C.A., Jakubowski, W., Casson, L.W., Gavaghan, P.D., and Shapiro, M.A., 1990, "Distribution of Giardia Cysts in Wastewater," Abstracts of International Symposium on Health-Related Water Microbiology, International Association on Water Pollution Research and Control, Tubingen.

1989, "Flocculation in Turbulent Flow: Measurement and Modeling of Particle Size Distributions," American Filtration Society Annual Conference, Pittsburgh, PA.

1989, "Giardia in Wastewater - Effect of Treatment," Abstracts of the Water Pollution Control Federation Annual Conference, San Francisco, CA.

1987, "Flocculation in Turbulent Flow: Measurements and Modeling of Particle Size Distributions," American Water Works Association Annual Conference, Kansas City, MO.

1986, "Measurement of Turbulent Scales in an Oscillating Grid Flocculator," American Water Works Association Annual Conference, Denver, CO.

Casson, L.W., and Edgar, W.W., "Participated with Mr. William W. Edgar in testing a treatment system for generating on-site sodium hypochlorite from landfill ash leachate," US 6,428,697 B1.