1. Enviro-Ag Engineering, Inc. Amarillo, TX Consultation on animal waste treatment facility at Rosebud Sioux Reservation, SD 2000 - present

2. BioCess, Inc., Gresham, OR Design and start-up of swine waste treatment facility at Anshan, Liaoning, China 2001 - 2002

3. Black & Veatch, Kansas City, MO Preliminary design of temperature- phased anaerobic digestion (TPAD) system in Madison, WI and Louisville, KY 1998 - 2001

4. EcoFuel, Inc., Eagan, MN Supervision of waste treatment programs for industrial and livestock wastes 1999 - present

5. Smithfield Foods, Inc., Smithfield, VA Consultation on waste treatment project for animal production sites and slaughterhouses 1999 - present

6. Veenstra & Kimm, Inc., Des Moines, IA Conceptual design, review of existing report and plan for upgrading wastewater treatment plant for the City of Altoona, IA 1999 - 2000

7. Brown and Caldwell, Sacramento, CA Design of TPAD system in Duluth, MN 1998 - 1999

8. Lemna International, Inc., St. Paul, MN Design of wastewater treatment facility for Farma Nemscak, Slovenia Training technical staffs on fundamentals of anaerobic digestion 1998 - present

9. The Anderson Group, Clear Lake, IA Design of Big Sky Farm waste treatment facility Design of odor control facility for Bell Farming Group, Wastewater treatment plant design (2 for China, 1 for Vietnam) 2001 - present