In Gratitude

1987—2026

Thirty-nine years of service

To our clients,

Thank you for thirty-nine years of professional friendships, opportunities, and challenging projects.

To our past employees,

Thank you for your comradeship, dedication, and hard work.

"Retirement is the opportunity to enjoy life in a new way."

— Anonymous

A Selected Roster of Clients

Across thirty-nine years, Ungers & Associates served clients across North America, Europe, and Asia — Fortune 100 manufacturers, multinational conglomerates, and specialized research institutions.

— Where We Worked —

A Geography of Practice

Chapter I · Domestic

40⁺

States Served

From Maine to California, with the firm's heartland anchored in Ohio, Indiana, and Kentucky — and substantial work across New York, Pennsylvania, Michigan, Illinois, and Texas.

500⁺Engagements

39Years

Chapter II · Global

Continents

Multinational engagements across North America, Europe, Asia, and Oceania — from London and Frankfurt to Tokyo, Mumbai, and beyond.

20⁺Countries

30⁺Multinationals

Selected Clients · Alphabetical

Atkins & Pearce

Battelle

British Petroleum

Cargill

Chase Bank

Cosentino, S.A.

Dominion Tar & Paper

Essilor International, S.A.

Federal Reserve Bank

Fifth Third Bank

Formica

Ford Motor Company

General Electric

Givaudan

Glatfelter

Goodyear Tire & Rubber

Kerry Group

Johnson & Johnson

Luxottica, S.p.A.

Mitsubishi Group

Mubea, K.G.

Panasonic Corporation

PNC Bank

Procter & Gamble

Ralston Purina

Sumitomo Group

TMK

University of Cincinnati

US Bank

Veyance Technologies, Inc.

Xerox

Representative of engagements from 1987 to 2026.

Publications & Research

Theses, books, scientific studies, and government and private research publications authored, in whole or in part, by members of Ungers & Associates' professional staff.

Government publications available from this archive are within the public domain and may be freely distributed; in any subsequent use, the funding agency should be given appropriate acknowledgment. Materials from PubMed and other sources may incorporate works protected under U.S. and foreign copyright laws — readers reproducing or making commercial use of these works are expected to adhere to the terms asserted by the copyright holder.

Scientific Journal Articles

Seven Publications

Ungers, L. J., T. G. Vendrey, and C. L. Barnes. Control of Methyl Methacrylate during the Preparation of Orthopedic Bone Cements. Journal of Occupational and Environmental Hygiene. Vol. 4, 4:272–280, April (2007).View PDF →
Ungers, L. J. and T. G. Vendrey. Comparison of Sampling and Analytical Methods Used During the Preparation of Methyl Methacrylate Bone Cements. Journal of Occupational and Environmental Hygiene. Vol. 3, 7:351–357, July (2006).View PDF →
Fajen, J. M., L. J. Ungers, and D. Roberts. Occupational Exposures of Workers to 1,3-Butadiene at Monomer Production Plants. Environmental Health Perspectives, 86:11–18 (1990).View PDF →
Ungers, L. J., et al. Industrial Hygiene and Control Technology Assessment of Ion Implantation Operations. Am. Ind. Hyg. Ass. J., 47(10):607–614 (1986).View PDF →
Ungers, L. J., et al. Release of Arsenic from Semiconductor Wafers. Am. Ind. Hyg. Ass. J., 46(8):416–420 (1985).View PDF →
Ungers, L. J., et al. Methodology for Occupational Risk Assessment: An Evaluation of Four Processes for the Fabrication of Photovoltaic Cells. Am. Ind. Hyg. Ass. J., 43(2):73–79 (1982).View PDF →
Moskowitz, P. D., L. J. Ungers, et al. Photovoltaic Energy Technologies: Examining Public and Occupational Health Risks. Solar Cell J. 5:1–18 (1982).View PDF →

Government Research Publications

Thirty-Seven Publications

Textile Dye Weighting Monitoring Study. Office of Toxic Substances, U.S. Environmental Protection Agency, Washington, D.C. EPA 560/5-90-009. April (1990).View PDF →
Krishnan, E. R., L. J. Ungers, P. Morelli-Schroth, and J. M. Fajen. Extent of Exposure Study: 1,3-Butadiene Monomer Production Industry. NIOSH Publication, Report No. IWS-147-04 (1987).View PDF →
Krishnan, E. R., L. J. Ungers, and J. M. Fajen. Industry-wide Studies Report of an In-Depth Survey at Firestone, Lake Charles, Louisiana. NIOSH Publication, Report No. IWS-147-28B (1987).
Ungers, L. J., J. M. Fajen, and D. Roberts. Industry-wide Studies Report of an In-depth Industrial Hygiene Survey of the Texaco Chemical Company, Port Neches, Texas. NIOSH Publication, NTIS PB 86224284/XAB:IWS-147.14 (1986).
Ungers, L. J., J. M. Fajen, and D. Roberts. Industry-wide Studies Report of an In-depth Industrial Hygiene Survey of the Armco Chemical Company, Alvin, Texas. NIOSH Publication, Report No. IWS-147-16B (1986).
Ungers, L. J., J. M. Fajen, D. Roberts and J. McCann. Industry-wide Studies Report of an In-depth Industrial Hygiene Survey of the Shell Oil Company, Deer Park, Texas. NIOSH Publication, Report No. IWS-147-10 (1986).
Fajen, J. M. and L. J. Ungers. Industry Hygiene Walk-Through Survey Report of the Goodyear Tire and Rubber Company, Beaumont, Texas. NIOSH Publication, Report No. IWS-147-34 (1986).
Fajen, J. M. and L. J. Ungers. Industry Hygiene Walk-Through Survey Report of the Denka Chemical Corporation, Houston, Texas. NIOSH Publication, Report No. IWS-147-27 (1986).
Fajen, J. M. and L. J. Ungers. Industry Hygiene Walk-Through Survey Report of the Firestone Synthetic Rubber and Latex Company, Lake Charles, Louisiana. NIOSH Publication, Report No. IWS-147-28 (1986).
Fajen, J. M. and L. J. Ungers. Industry-wide Studies Report of an In-depth Industrial Hygiene Survey of Synpol, Inc., Port Neches, Texas. NIOSH Publication, Report No. IWS-147-29 (1986).
Fajen, J. M. and L. J. Ungers. Industrial Hygiene Walkthrough Survey Report of Colorado Chemical Specialties, Golden, Colorado. NIOSH Publication, Report No. IWS-147.30 (1986).
Fajen, J. M. and L. J. Ungers. Industrial Hygiene Walkthrough Survey Report of E. I. du Pont de Nemours and Company Sabine River Works, Orange, Texas. NIOSH Publication, Report No. IWS-147-32 (1986).
Fajen, J. M. and L. J. Ungers. Industrial Hygiene Walkthrough Survey Report of E. I. du Pont de Nemours and Company, Beaumont Works, Beaumont, Texas. NIOSH Publication, Report No. IWS-147-33 (1986).
Ungers, L. J. Measurement of Exhaust Emissions from Diesel-Powered Forklifts during Operations in Ammunition Storage Magazines. U.S. Army Corps of Engineers (Report No. AD-A141 792). Cincinnati, OH, PEI Associates, Inc. (1984).View PDF →
Jarvis, C., et al. A Risk Assessment of Waste Oil Burning in Boilers & Space Heaters. Office of Solid Waste & Emergency Response, U.S. EPA, Washington, D.C. EPA/530-SW-84-011. August (1984).View PDF →
Metzler, S. C., et al. Evaluation of Health and Environmental Problems Associated with the Use of Waste Oil as a Dust Suppressant. Office of Solid Waste, U.S. EPA, Washington, D.C. EPA 68-02-3173. February (1984).View PDF →
Ungers, L. J., et al. Control Technology for the Microelectronics Industry at Fairchild Semiconductor, South Portland, Maine. NIOSH Publication, ECTB-115-20b (1984).View PDF →
Ungers, L. J., et al. Control Technology for the Microelectronics Industry at Xerox Corporation Microelectronics Center, El Segundo, California. NIOSH Publication, ECTB-115-12b (1984).View PDF →
Ungers, L. J., et al. Control Technology for the Microelectronics Industry at United Technologies Corporation, Mostek Facility, Carrollton, Texas. NIOSH Publication, ECTB-115-16b (1984).View PDF →
Ungers, L. J., et al. Control Technology for the Microelectronics Industry at NEC Electronics USA, Mountain View, California. NIOSH Publication, ECTB-115-24b (1984).View PDF →
Smith, R. K., and L. J. Ungers. Control Technology for Integrated Circuit Fabrication, Honeywell Optoelectronics Division, Richardson, Texas. NIOSH Publication, NTIS PB 85109023 (1984).
Ungers, L. J., and R. K. Smith. Control Technology for Microelectronics Industry, Airco Corporation, Phoenix, Arizona. NIOSH Publication, NTIS PB 85107183 (1984).View PDF →
Ungers, L. J. et al. Analysis of Workplace Monitoring Data for 4,4′-Methylenebis (2-chloroaniline) MOCA during Polyurethane Production. US EPA, Office of Pesticide and Toxic Substances, Washington, D.C., Contract No. 68-02-3935. PEDCo Environmental, Inc. (1984).
Ungers, L. J., R. I. Mitchell, and J. H. Jones. Control Technology for the Microelectronics Industry at NEC Electronics, Mountain View, California. NIOSH Publication, NTIS PB 5221315 (1984).View PDF →
Industrial Process Profiles for Environmental Use: Chapter 30. The Electronic Component Manufacturing Industry. U.S. EPA, Washington, D.C. EPA-68-03-2294. NTIS PB83-199190 (1983).
Ungers, L. J., R. K. Smith, and S. Rose. Preliminary Control Technology Survey of Motorola, Inc., Phoenix, Arizona. NIOSH Publication, NTIS PB 83207225 (1983).
Ungers, L. J., R. K. Smith, and S. Rose. Control Technology for Integrated Circuit Fabrication at Intel Corporation, Chandler, Arizona. NIOSH Publication, OCLC No. 13529307 (1983).
Mihlan, G. J., L. J. Ungers, et al. Control Technology for Integrated Circuit Fabrication. Xerox Corporation, El Segundo, California. NTIS PB 83-239053 (1983).
Mihlan, G. J., R. K. Smith, and L. J. Ungers. Walk-through Survey Report: Control Technology for Integrated Circuit Fabrication. Intel Corporation, Chandler, Arizona. NTIS PB 83-237438 (1983).
Smith, R. K., S. G. Rose, and L. J. Ungers. Preliminary Control Technology of the Jet Propulsion Laboratory, California Institute of Technology. NIOSH Publication, NTIS PB 83195842 (1982).
Smith, R. K., S. G. Rose, and L. J. Ungers. Preliminary Industrial Hygiene Survey Report of Texas Instruments, Dallas, Texas. NIOSH Publication, NTIS PB 83188078 (1982).
Smith, R. K., S. G. Rose, and L. J. Ungers. Control Technology Survey Report, United Technologies, Carrollton, Texas. NIOSH Publication, NTIS PB 83188086 (1982).
Smith, R. K., S. G. Rose, and L. J. Ungers. Preliminary Control Technology, Optifab, Inc., Phoenix, Arizona. NIOSH Publication, NTIS PB 83196923 (1982).
Ungers, L. J. Analysis of PAL Model Performance. U.S. EPA, Research Triangle Park, North Carolina. EPA-904/9-80-065 (1981).
Ohio River Valley Regional Study: Analysis of the Air Quality Planning Process in the Ohio River Valley Region. National Commission on Air Quality, Research Triangle Park, NC. OCLC No. 09142340 (1980).
Owens, T., L. J. Ungers, and T. Briggs. Estimates of Occupational Safety and Health Impacts Resulting from Large-scale Production of Major Photovoltaic Technologies. Brookhaven National Laboratory. BNL Publication 51324, August (1980).View PDF →
Jutze, G. A., et al. Reasonably Available Control Measures for Fugitive Dust Sources "RACM." Ohio EPA, Division of Engineering. Columbus, OH (1980).View PDF →
Area Source Emission Inventory: Hamilton County, Tennessee, and Walker and Catoosa Counties, Georgia. Vol. 1 & 2. U.S. EPA, Washington, D.C. EPA/904/9-76-027A. NTIS PB-258 137/9BE & 7BE. October (1975).
Area Source Emission Inventory: Dougherty County, Georgia. U.S. EPA, Washington, D.C. EPA/904/9-76-019A and 019B. NTIS PB-256-004/3BE and 0BE. December (1975).
Area Source Emission Inventory: Fulton, DeKalb, Cobb, Clayton, and Gwinnett Counties, Georgia. Vol. 1 & 2. U.S. EPA, Washington, D.C. EPA/904/9-76-008A & B. NTIS PB-250 382 and 383. October (1975).
Area Source Emission Inventory: Duval, Hillsborough, Pinellas and Polk Counties, Florida. U.S. EPA, Washington, D.C. EPA No. 68-02-1375. October (1975).

Conference Presentations

Eleven Presentations

Ungers, L. J. Differences between Ground-level and Rooftop Airborne Fungal Populations and their Implication for Indoor Air Quality Investigations. Indoor Air Quality Session, Pan American Aerobiology Association, Tulsa, Oklahoma. June (2005).
Ungers, L. J. Review of the Biology and Ecology of Mold in Buildings. Indoor Air Quality Seminar, American Institute of Architects, Ohio Convention. Dayton, Ohio. October (2003).
Ungers, L. J. The Basics of Mold Contamination. Ohio Bar Association, 2003 Annual Convention. Dayton, Ohio. May (2003).
Ungers, L. J. Recognition, Evaluation, and Control of Indoor Air Quality Problems in Commercial Office Buildings. Conference of the Building Owners & Managers Association, Cincinnati, Ohio (1996).
Krishnan, E. R., L. J. Ungers, and T. K. Corwin. Control of Occupational Exposures to 1,3-Butadiene. Proceedings of the Air Pollution Control Association Convention (1987).
Fajen, J. M., L. J. Ungers, and D. Roberts. Occupational Exposure of Workers to 1,3-Butadiene. Proceedings of the Third Joint U.S.–Finnish Science Symposium (1986).
Krishnan, E. R., L. J. Ungers, et al. Control of Occupational Exposure to 1,3-Butadiene. AIChE Annual Meeting, Miami Beach, Florida (1986).
Ungers, L. J., et al. Workshop on Photovoltaic Energy Systems: Environmental, Health, and Safety Issues and Research Needs. San Francisco, California, August (1984).
Ungers, L. J. Control Technology Assessment of the Integrated Circuit Industry. Semiconductor Safety Association Conference. Scottsdale, Arizona. May (1984).
Ungers, L. J. Industrial Hygiene Practice and Future in the Microelectronics Industry. Emerging High Technology Symposium. American Industrial Hygiene Association, Cincinnati, Ohio (1983).
Moskowitz, P. D., Briggs, T., Ungers, L., Hamilton, L. D. Prospective Method for Estimating Occupational Health Risks in New Energy Technologies. Presentation at the 109th meeting of the American Public Health Association. Brookhaven National Laboratory, Upton, NY. BNL-30748 (1981).
Ungers, L. J. and Pfetzing, E. A. Improving the Comprehensive Emission Inventory. PEDCo, Inc., 78-22.4 Preliminary Technical Program. Journal of the Air Pollution Control Association. June (1978).