Wayne E. Woldt

Wayne E. Woldt, Ph.D., P.E.

Associate Professor of Biological Systems Engineering and Environmental Engineer
Academic Degrees
  • Ph.D., Civil Engineering, University of Nebraska-Lincoln
  • M.S., Civil Engineering, University of Nebraska-Lincoln
  • B.S., Civil Engineering, Colorado State University - Fort Collins
  • Registered Professional Engineer, Nebraska
Appointment
  • 50% Research
  • 25% Teaching
  • 25% Extension
Areas of Research and Professional Interest
  • Groundwater engineering and management
  • Constructed wetlands for wastewater treatment
  • Neuro-Fuzzy modeling of environmental systems
  • Systems analysis for pollution prevention and risk management
  • Odor measurement
Extension Interests
  • Innovations and implementation of small community environmental infrastructure solutions
  • Transfer of pollution prevention methods to business and industry
  • Liaison with federal, state, and local agencies with consulting firms

Honors and Awards

  • 2004 ASAE Blue Ribbon Award for Groundwater Model User Manual
  • 2002 IANR Team Programming Award
  • 2002 Distinguished Service Award for Nebraska Cooperative Extension Association
  • 1999 College of Engineering Multidisciplinary Research Award
  • 1998 Invited to serve on the EUFIT'99 International Program Committee
  • 1997 Epsilon Sigma Phi State Team Award for State Fair Earthbound Exhibit
  • 1997 Cooperative Extension Excellence in Team Programming for NUFACTS
  • 1997 ASAE Best Paper Presentation at International Conference, August 1997

Selected Publications

JOURNAL ARTICLES

  • Dvorak, B.I., Woldt, W., Hygnstrom, J., Dahab, M., and D. Schulte. 2003. Partners in Pollution Prevention Internship Program: Undergraduate Engineering Student Education Through Technical Assistance. Environmental Quality Management, V.12, N.3, pp. 43-57.
  • Woldt, W., Dvorak B., and M. Dahab. 2003. Application of Fuzzy Set Theory to Industrial Pollution Prevention: Production System Modeling and Life Cycle Assessment. Invited paper accepted for publication in Soft Computing, V.7, pp. 419-433.
  • Jillson, S.J., Dahab, M., Woldt, W. and R.Y. Surampali. 2001. Pathogen and Pathogen Indicator Removal Characteristics in Treatment Wetland Systems. ASCE Practice Periodical of Hazardous, Toxic and Radioactive Waste Management, V.5, N.3, pp. 153-160.
  • de Mol, R.M., and W. Woldt. 2001. Application of Fuzzy Logic in Automated Cow Status Monitoring. Journal of Dairy Science, V.84, pp. 400-410.
  • Reed, S.D., Grisso, R.D., Woldt, W., and S. M. Niemeyer. 2000. Waste Assessment of Agricultural Chemicals, Petroleum Products and Maintenance Residuals on Farmsteads. Applied Engineering in Agriculture, V.16, N.2, pp. 175-188, ARD Journal Series Number 11630.
  • Behrens, M., Dvorak, B., and W. Woldt. 2000. Implications of Hidden Costs: Comparison of Bitumen Testing Procedures. Environmental Technology, V.21, Selper Ltd, pp. 243-255.
  • Behrens, M., Dvorak, B., and W. Woldt. 1999. Comparison of asphalt extraction procedures: Implications of hidden environmental and liability costs. Transportation Research Record, 1661, pp. 46-53.
  • Wanzenried, B., B. Dvorak, and W. Woldt. 1999. Descriptive versus prescriptive: Comparison of pollution prevention opportunity assessment approaches. Pollution Prevention Review, 9(3):67-79.
  • Goderya, F., M.F. Dahab, W.E. Woldt, and I. Bogardi. 1998. Environmental impact evaluation of spatial management practices using simulations with spatial data. Journal of Water Resources Planning and Management, 124(4):181-191.
  • Woldt, W.E., M.E. Hagemeister, and D.D. Jones. 1998. Characterization of an unregulated landfill using surface-based geophysics and geostatistics. Ground Water Journal, 36(6):966-974. (Journal Series Number 10817)
  • Woldt, W.E., B. Dvorak, D. Schulte and M. Dahab. 1998. Partners in pollution prevention: Engineering education through internships. ASAE Paper No. 98-5010, Orlando, FL, 6 pp.
  • Dou, C., W. Woldt, M. Dahab, and I. Bogardi. 1997. Transient groundwater flow simulation using a fuzzy set approach. Ground Water, 35(2):205-215. (Journal Series No. 11042)
  • Dou, C., W.E. Woldt, I. Bogardi, and M. Dahab. 1997. Numerical solute transport simulation using fuzzy sets approach. Journal of Contaminant Hydrology, 27:107-126. (Journal Series No. 11390)
  • Tannehill, C., M. Dahab, W. Woldt, and I. Bogardi. 1997. Evaluation of nitrate treatment methods under uncertainty. Journal of Environmental Systems, 25(4):421-444.
  • Goderya, F.S., M.F. Dahab, W.E. Woldt, and I. Bogardi. 1996. Incorporation of spatial variability in modeling non-point groundwater nitrate pollution. Water Science and Technology, Journal of the International Association on Water Quality, 33(4-5):233-240.
  • Goderya, F.S., W.E. Woldt, M.F. Dahab, and I. Bogardi. 1996. Comparison of two transport models for predicting nitrates in percolating water. Trans. of ASAE, 39(6):2131-2137.
  • Hagemeister, M.E., D.D. Jones, and W.E. Woldt. 1996. Hazard ranking of landfills using fuzzy composite programming. Journal of Environmental Engineering, 122(4):248-258. (ARD Journal Series No. 10564)
  • Hagemeister, M.E., D.D. Jones, and W.E. Woldt. 1996. Risk assessment of landfills using fuzzy composite programming. Journal of Environmental Engineering, 122(4):248-258. (ARD Journal Series No. 10564)
  • Woldt, W.E., M. Dahab, I. Bogardi, and C. Dou. 1996. Management of diffuse pollution in groundwater under imprecise conditions using fuzzy models. Water Science and Technology, Journal of the International Association on Water Quality, 33(4-5):249-257.
  • Dou, C., W.E. Woldt, M.F. Dahab, and I. Bogardi. 1995. Steady-state groundwater flow simulation with imprecise parameters. Water Resources Research, 31(11):2709-2719. (ARD Journal Series No. 10804)
  • Dahab, M.F. and W. Woldt. 1994. Strategies for solid waste prevention in rural areas. The Environmental Professional, 16:49-56.
  • Dahab, M. and W. Woldt. 1993. Solid-waste management: Cooperative extension initiative. Journal of Professional Issues in Engineering Education and Practice, Vol. 119, No 4, pp. 396-401, American Society of Civil Engineering, New York, NY.

SYMPOSIUM OR WORKSHOP PROCEEDINGS

  • Woldt, W., Dahab, M, Schulte, D., and Y. Wang. 2002. "Modeling Constructed Wetland Wastewater Treatment Performance Using Fuzzy Inference Systems," ASAE Annual International Meeting, paper no. 023041, Chicago, IL, July 29-31.
  • Schulte, D., Dvorak, B., Woldt, W., Hygnstrom, J., and M. Dahab. 2002. "Assessment of Student Learning in an Innovative Educational Partnership with Business, Industry and Government Agencies," proceedings of the 2002 ASEE/SEFI/TUB Colloquium, Berlin, Germany, Oct.
  • Dvorak, B., Hygnstrom, J., Halada, S., and W. Woldt. 2002. "An Impact Assessment of Technical Assistance Provided by Undergraduate Student Interns to Businesses in Nebraska," proceedings of the 2002 National Pollution Prevention Roundtable Spring Conf (Ed. Michele Russo), Portland, OR, April.
  • Dvorak. B., Woldt, W., and J. Hygnstrom. 2002. "Combining Education and Technical Assistance: Innovative Pollution Prevention Program in USA," IWA World Congress 2002, Melbourne, Australia, April.
  • Marahatta, R., Woldt, W., Schulte, D., and M. Dahab. 2002. "Performance of a Constructed Wetland for On-site Wastewater Treatment Over an Extended Time Period in a Cold Climate," proceedings Water Environment Federation WEFTEC 2002 Annual Conference.
  • Dvorak, B., Woldt, W., and J. Hygnstrom. 2002. "Combining Education and Technical Assistance: Innovative Pollution Prevention Program in USA," proceedings International Water Association 3rd World Congress, Melbourne, Australia, April 7-12.
  • Woldt, W., Dahab, M., Schulte, D., and Y. Wang. 2002. "Modeling Wastewater Treatment Performance of a Subsurface Flow Constructed Wetland Using Fuzzy Logic," proceedings International Water Association 3rd World Congress, Melbourne, Australia, April 7-12.
  • Jillson, S.J., Dahab, M., Woldt, W., and R.Y. Surampali. 2000. "Pathogen Indicator Organism Removal in Subsurface Flow Constructed Wetlands," in proceedings WEFTEC 2000, Session 51, CD-ROM, Water Environment Federation, October 14-18, Anaheim, CA.
  • de Mol, R.M., and W. Woldt. 2000. "Application of Fuzzy Logic in Automated Cow Status Monitoring," In: H.J. Blokhuis, E.D. Ekkel and B. Wechsler (eds.), Improving health and welfare in animal production. Proceedings of sessions of the EAAP Commission on Animal Management & Health. EAAP publication No. 102, The Hague, The Netherlands, August 21-24, pp. 45-53.
  • de Mol, R.M., and W. Woldt. 2000. "Application of Fuzzy Logic in Automated Cow Status Monitoring," In: J.A.M. van Arendonk (ed.), Book of Abstracts of the 51th Annual Meeting of the European Association for Animal Production. The Hague, The Netherlands, August 21-24. Wageningen Pers, Wageningen, Paper M2.10, p. 180.
  • Behrens, M., B. Dvorak, and W. Woldt. 1999. Comparison of asphalt extraction procedures: Implications of hidden environmental and liability costs. Proc. Annual Meeting of the Transportation Research Board/National Research Council, Washington, DC, January.
  • Hygnstrom, J., B.I. Dvorak, W. Woldt, M. Dahab, and D. Schulte. 1999. Partners in pollution prevention: An innovative educational experience. Proc. Nat'l Pollution Prevention Roundtable, Washington, DC, pp. 181-184.
  • Woldt, W.E., B.I. Dvorak, and J. Sheng. 1999. Systems approach to industrial pollution prevention with the application of fuzzy set methods. In: Proc. EUFIT'99, Seventh European Congress on Intelligent Techniques and Soft Computing (Ed. Hans-Jurgen Zimmermann), Verlag Mainz, Susterfeldstrasse 83, D-52072, Aachen, Germany, (Abstract p. 137, article on CD-ROM), September 13-16, 6 pp.
  • Dvorak, B., W. Woldt, M. Dahab, and D. Schulte. 1998. Partners in pollution prevention internship program: Success stories and lessons learned. Proc. Annual Conference of the American Society for Engineering Education, Seattle, WA, July.
  • Rosenhamer, G., W. Woldt, and B. Dvorak. 1998. Dependence of sequential ordering on progressive implementation of pollution prevention options. Proc. Annual Conference of the National Pollution Prevention Roundtable, Cincinnati, OH, April.
  • Wanzenried, B., B. Dvorak, and W. Woldt. 1998. Pollution prevention opportunity identification: Small system boundary approach. Proc. Annual Conference of the National Pollution Prevention Roundtable, Cincinnati, OH.
  • Woldt, W., M. Dahab, and D. Crist. 1998. Fuzzy set based industrial decision support system for evaluation of pollution prevention methods. Proc. EUFIT '98- The Sixth European Congress on Intelligent Techniques and Soft Computing, (Ed. Hans Zimmermann), Aachen, Germany, Volume 2, pp. 1098-1102.
  • Dou, C., W. Woldt, and I. Bogardi. 1997. Simulation of solute transport in the unsaturated zone using fuzzy rule-based approach. Proc. UFIT '97- The Fifth European Congress on Intelligent Techniques and Soft Computing, (Ed. Hans Zimmermann), Aachen, Germany, 3:2131-2135, September 8-11.
  • Woldt, W.E., C. Dou, and I. Bogardi. 1997. Innovations in modeling solute transport in the vadose zone using fuzzy rule-based methods. Proc. Applications of Emerging Technologies in Hydrology [eds. Ward, A.D. and Wilson, B.N.], ASAE Annual International Meeting, August 10-14, Minneapolis, MN.
  • Bowling, S.W, W.E. Woldt, and D.D. Schulte. 1996. Delineating subsurface contamination using geostatistical and non-intrusive geophysical methodologies. Proc. North American Water and Environment Congress, ASCE Annual Meeting, Anaheim, CA., June 22-28, 8 pp.
  • Dou, C., W.E. Woldt, I. Bogardi, and M. Dahab. 1996. Modeling groundwater flow and transport within a fuzzy set framework: Part II - solute transport. Proc. EUFIT '96- The Fourth European Congress on Intelligent Techniques and Soft Computing, (Ed. Hans Zimmermann), Aachen, Germany, 1:50-54.
  • Tannehill, C.C., M.F. Dahab, and W. Woldt. 1996. Evaluation of nitrate treatment methods under uncertainty. Proc. North American Water and Environment Congress, American Society of Civil Engineers, Anaheim, CA, June 22-28, CD-ROM publication.
  • Woldt, W., M. Dahab, and D. Crist. 1996. A new life cycle analysis method for incorporation of pollution prevention into industrial decision making. Proc. National Pollution Prevention Roundtable Conference, National Pollution Prevention Roundtable, Washington, DC, April 9-12.
  • Woldt, W., C. Dou, I. Bogardi, and M. Dahab. 1996. Modeling groundwater flow and transport within a fuzzy set framework: Part 1 - Flow. Proc. EUFIT '96- The Fourth European Congress on Intelligent Techniques and Soft Computing, (Ed. Hans Zimmermann), Aachen, Germany, Volume 1, pp. 159-163
  • Goderya, F., M.F. Dahab, W.E. Woldt, and I. Bogardi. 1995. Incorporation of spatial variability in modeling non-point source groundwater nitrate pollution. Proc. 2nd International IAWQ Specialized Conference and Symposia on Diffuse Pollution, International Association on Water Quality, Brno and Prague, Czech Republic, August, pp. 49-56.
  • Simons, B.A., W.E. Woldt, and D.D. Jones. 1995. A non-intrusive screening methodology for environmental hazard assessment at waste disposal sites for water resources protection. Proc., Water Resources and Environmental Hazards: Emphasis of Hydrologic and Cultural Insight in the Pacific Rim. American Water Resources Association, June, pp. 443-452.
  • Woldt, W., M. Dahab, I. Bogardi, and C. Dou. 1995. Management of diffuse pollution in groundwater under imprecise conditions using fuzzy models. Proc. 2nd International IAWQ Specialized Conference and Symposia on Diffuse Pollution, International Association on Water Quality, Brno and Prague, Czech Republic, August, pp. 65-71.
  • Woldt, W.E., C. Dou, I. Bogardi, and M.F. Dahab. 1995. Using fuzzy set methods to consider parameter imprecision in groundwater flow models. Proc. Models for Assessing and Monitoring Groundwater Quality, International Association of Hydrological Sciences, Publication No. 227, IAHS Press, Oxfordshire, UK, pp. 203-212.
  • Woldt, W.E., D.D. Jones and M. Hagemeister. 1994. A decision support system for landfill hazard ranking. Proc. 5th Int'l Conf. Computers in Agriculture, Orlando, FL, pp. 59-64.
  • Woldt, W. and B. Sandhorst. 1994. Use of computer based multimedia systems in solid waste management education. Proc. Fifth International Conference on Computers in Agriculture, ASAE, Orlando, FL, February 6-9, pp. 745-751.

BOOK CHAPTERS

  • Goderya, F.S., M.F. Dahab, W.E. Woldt, and I. Bogardi. 1996. Spatial patterns analysis of field measured soil nitrate. ASTM Special Technical Publication 1238, Geostatistics for Environmental and Geotechnical Applications, (Eds. S. Rouhani, R.M. Srivastava, A.J. Desbarats, M.V. Cromer, and A.I. Johnson), pp. 248-261, American Society for Testing and Materials, West Conshohocken, PA.
  • Kuhn, G.N., W.E. Woldt, D.D. Jones, and D.D. Schulte. 1996. Solid waste disposal site characterization using non-intrusive electromagnetic survey techniques and geostatistics. ASTM Special Technical Publication 1283, Geostatistics for Environmental and Geotechnical Applications, (Eds. S. Rouhani, R.M. Srivastava, A.J. Desbarats, M.V. Cromer, and A.I. Johnson), pp. 162-180, American Society for Testing and Materials, West Conshohocken, PA.
  • Kuhn, G.N., W.E. Woldt, D.D. Jones, and D.D. Schulte. 1995. Solid waste disposal site characterization using non-intrusive electromagnetic survey techniques and geostatistics. Geostatistics for Environmental and Geotechnical Applications, ASTM STP 1283, R.Mohan Srivastava, Shahrokh Rouhani, Marc V. Cromer, A. Ivan Johnson, Ed., American Society for Testing and Materials, Philadelphia, PA.

PROFESSIONAL SOCIETY PAPERS

  • Marahatta, R., Woldt, W., Schulte, D., and M. Dahab. 2002. "Single-Family Wastewater Treatment Using a Subsurface Constructed Wetland," ASAE Mid-Central Conference, St. Joseph, MO, April 13.
  • Stone, M., G. Glunz, W. Woldt, and D. Schulte. 1999. Performance of a constructed wetland for a single family dwelling. ASAE Paper No. 99-2033, Annual International Conference, Toronto, Ontario Canada, July 18-21.
  • Dvorak, B., W. Woldt, M. Dahab, and D. Schulte. 1998. Partners in pollution prevention internship program: A new model in hands-on education. 33rd Annual Midwest Conference of the American Society for Engineering Education, Salina, KS, April.
  • Glunz, G.G., W.E. Woldt, D.D. Schulte, and D.E. Eisenhauer. 1998. Constructed wetland for single-family wastewater treatment in Nebraska. ASAE Paper No. MC98-104, Mid-Central Meeting, St. Joseph, MO, 14 pp.
  • Bowling, S.D., W.E. Woldt, and D.D. Schulte. 1997. A geophysical and geostatistical methodology for evaluating potential subsurface contamination from feedlot runoff retention ponds. ASAE Paper No. 97-2087, St. Joseph, MI.
  • Dou, C., W. Woldt, M. Dahab, and I. Bogardi. 1994. Application of geostatistics for mapping nitrate contaminated groundwater. ASAE Paper No. 94-2095, International Summer Meeting, Kansas City, MO, June 19-22.
  • Dou, C., W. Woldt, M. Dahab, and I. Bogardi. 1994. Groundwater flow modeling with imprecise parameters. ASAE Paper No. 94-2047, International Summer Meeting, Kansas City, MO, June 19-22.
  • Goderya, F., M.F. Dahab, W.E. Woldt, and I. Bogardi. 1994. Consideration of spatial variability in nitrate contamination to groundwater. ASAE Paper No. 94-2092, International Summer Meeting, Kansas City, MO, June 19-22.
  • Reed, S., R. Grisso, W. Woldt, and S. Niemeyer. 1994. Waste assessment of Nebraska farmsteads. ASAE Paper No. 94-1591, International Winter Meeting, Atlanta, GA, December 13-16.
  • Williams, L., W. Woldt, M. Dahab and D.D. Jones. 1994. Rural integrated solid waste management with uncertainty considerations. ASAE Paper No. MC94-123, Mid-Central Conference, St. Joseph, MO, March 12.

EXTENSION BULLETINS/CIRCULARS

  • Hygnstrom, J., Woldt, W., and S. Skipton. 2001. "Residential On-site Wastewater Treatment, An overview," EC 01-798, Cooperative Extension Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.
  • Hay, D.R., R. Grisso, P. Jasa, R. Koelsch, S. Skipton, and W. Woldt. 1998. Farm*A*Syst site evaluation. Extension Circular EC98-748, University of Nebraska Cooperative Extension, 9 pp.
  • Hay, D.R., R. Grisso, P. Jasa, R. Koelsch, S. Skipton, and W. Woldt. 1998. Farm*A*Syst summary worksheet-overall farm assessment. Extension Circular EC98-747, University of Nebraska Cooperative Extension, 5 pp.
  • Hay, D.R., R. Grisso, P. Jasa, R. Koelsch, S. Skipton, and W. Woldt. 1998. Farm*A*Syst introduction. Extension Circular EC98-746, University of Nebraska Cooperative Extension, 4 pp.
  • Niemeyer, S., W. Woldt, R. Grisso, and M. Dahab. 1997. Pollution prevention for farms, acreages and households: A resource for educators. Extension Circular EC-97-451-S, University of Nebraska Cooperative Extension.
  • Woldt, W., Dahab, M., and J. Hygnstrom. 1995. "Pollution Prevention Toolkit for Farm Cooperatives," EC 95-739-S, Cooperative Extension Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.
  • Woldt, W., Dahab, M., and J. Hygnstrom. 1995. "Pollution Prevention Toolkit for Metal Finishers," EC 95-740-S, Cooperative Extension Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.
  • Woldt, W., Dahab, M., and J. Hygnstrom. 1995. "Pollution Prevention Toolkit for Drycleaners," EC 95-741-S, Cooperative Extension Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.
  • Woldt, W., Dahab, M., and J. Hygnstrom, 1995. "Pollution Prevention Toolkit for Vehicle Maintenance Shops," EC 95-742-S, Cooperative Extension Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.
  • Woldt, W., Dahab, M., and J. Hygnstrom. 1995. "Pollution Prevention Toolkit for Autobody Repair Shops," EC 95-743-S, Cooperative Extension Division, Institute of Agriculture and Natural Resources, University of Nebraska-Lincoln.
  • Skipton, S., Woldt, W., and B. Dvorak. 2002. "Decommissioning Water Wells: An Owners Guide," Cooperative Extension, University of Nebraska, NebGuide G02-1471-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Site Evaluation," Cooperative Extension, University of Nebraska, NebGuide G02-1469-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Constructed Wetlands," Cooperative Extension, University of Nebraska, NebGuide G02-1474-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Mound Systems," Cooperative Extension, University of Nebraska, NebGuide G02-1475-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Gravelless Drainfield Systems for Effluent Treatment," Cooperative Extension, University of Nebraska, NebGuide G02-1480-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Traditional Drainfield Systems for Effluent Treatment," Cooperative Extension, University of Nebraska, NebGuide G02-1479-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Conducting a Soil Percolation Test," Cooperative Extension, University of Nebraska, NebGuide G02-1472-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: Septic Tank Design and Installation," Cooperative Extension, University of Nebraska, NebGuide G02-1473-A.
  • Hygnstrom, J., Skipton, S, and W. Woldt. 2002. "Residential On-site Wastewater Treatment: The Role of Soil," Cooperative Extension, University of Nebraska, NebGuide G02-1468-A.
  • Hygnstrom, J., Skipton, S., and W. Woldt. 2001. "Residential On-Site Wastewater Treatment: Septic System and Drainfield Maintenance," Cooperative Extension, University of Nebraska, NebGuide G01-1424-A.
  • Hygnstrom, J., Skipton, S., and W. Woldt. 2001. "Residential On-Site Wastewater Treatment: Lagoon Maintenance," Cooperative Extension, University of Nebraska, NebGuide G01-1423-A.
  • Niemeyer, S., W. Woldt, R. Grisso, and M. Dahab. 1996. Managing wastes: Household remodeling jobs and debris. NebFact NF 96-312, University of Nebraska Cooperative Extension.
  • Niemeyer, S., K. Heiden, R. Grisso, and W. Woldt. 1994. Handling wastes: Tires. Neb Fact NF 94-197, University of Nebraska Cooperative Extension.
  • Woldt, W., and M. Dahab. 1994. "Don't Dump It: The Ban on Private Property Disposal of Solid Waste," Cooperative Extension, University of Nebraska, NebFact NF 94-181.
  • Niemeyer, S., Heiden, K., and W. Woldt. 1994. "Handling Wastes: Household Appliances (White Goods)," Cooperative Extension, University of Nebraska, NebFact NF 94-189.
  • Niemeyer, S., and W. Woldt. 1994. "Handling Wastes: Household Fluorescent Lighting and PCB Ballasts," Cooperative Extension, University of Nebraska, NebFact NF 94-190.
  • Niemeyer, S., Heiden, K., and W. Woldt. 1994. "Handling Wastes: Household Solvents," Cooperative Extension, University of Nebraska, NebFact NF 94-193.
  • Niemeyer, S., Heiden, K., and W. Woldt. 1994. "Handling Wastes: Household Paints and Paint Related Products," Cooperative Extension, University of Nebraska, NebFact NF 94-194.
  • Dahab, M., and W. Woldt. 1993. "Pollution Prevention in Business," Cooperative Extension, University of Nebraska, NebFact NF 93-122.
  • Niemeyer, S., K. Heiden, R. Grisso, and W. Woldt. 1994. Handling wastes: Used oil and antifreeze. NebFact NF 94-196, University of Nebraska Cooperative Extension.
  • Niemeyer, S., R. Grisso, W. Woldt, and K. Heiden. 1994. Handling wastes: Vehicle batteries. NebFact NF 94-195, University of Nebraska Cooperative Extension.
  • Fuller, E.J., and W. Woldt. 1992. "Establishing and Operating a Solid Waste Transfer Station," Cooperative Extension, University of Nebraska, NebFact NF 92-78.