Sustainability:
Schwerdtfeger, C. and Schroeder, J. "A Benchmark Study of Current Practices and Tools for Sustainability." Environmental Management, a publication of the Air & Waste Management Association.  October 2008.

Air Quality:
Schwerdtfeger, C.  "How to Select Permit Conditions to Ensure Maximum Operational Flexibililty:  A Case Study at a Cardboard Manufacturing Facility."  Proceedings of the 96th Annual Conference and Exhibition of the Air & Waste Management Association.  May 2003.

Schwerdtfeger, C. and McHenry, J. "The Permitting and Regulatory Nightmares of Using EPA Method 24 to Determine the VOC Content of Water-Based Coatings and Adhesives."  Proceedings of the 93rd Annual Conference and Exhibition of the Air & Waste Management Association.  June 2000.

Regulatory Exemption:
Schwerdtfeger, C., DeCosta T. and Martinez, M. "A Recycling Exemption for Oil/Water Separator Waste at a Large Military Base in California."  Proceedings of the 96th Annual Conference and Exhibition of the Air & Waste Management Association.  May 2003.

Environmental Impact Reports:
Schwerdtfeger, C. "Comments on Draft EIR for Upper Chiquita Reservoir Emergency Storage Project".  March 2008.

Pollution Prevention:
Oliphant, R. and Schwerdtfeger, C. ""Solvent Substitution for Electrical Equipment Cleaning" published as Chapter 5 in Pollution Prevention Applications for Solvent Use (EPRI, February 1995).