1. Virginia Tech; Occoquan Lab; 9408 Prince William Street Manassas VA
2. Santa Clara Valley Water District; San Jose CA
3. Washington Suburban Sanitary Commission; Laurel MD
4. Upper Occoquan Service Authority; Centreville VA
5. Arcadis; Fairfax VA
6. EBA; Laurel MD
7. Kayuga Solution; Irvine CA