1. Ecological Risk Inc. Rancho Murieta CA USA
2. US Army Public Health Center, Aberdeen Proving Ground MD USA
3. Gary D. Williams & Associates Inc. Campbellville Ontario Canada
4. LK Consultancy Turner Valley Alberta Canada
5. Western Washington University Bellingham WA USA
6. Michigan State University East Lansing MI USA
7. Ramboll US Consulting Atlanta GA USA
8. Azimuth Consulting Group Inc. Vancouver British Columbia Canada
9. Research Development and Engineering Center, Engineer Research and Development Center US Army Corps of Engineers MS Vicksburg USA
10. Labcorp Seattle WA USA
11. Rifcon Hirschberg Germany
12. USEPA Narragansett RI USA