| Subject | Counties Served |
| Case Closures | Ashland, Bayfield, Oneida, Vilas |
| Dry Cleaner Environmental Response Program (DERP) | Ashland, Bayfield, Oneida, Vilas |
| Environmental Site Investigation, Cleanup, Remedial Actions | Ashland, Bayfield, Oneida, Vilas |
| Phase I and Phase II Environmental Site Assessments | Ashland, Bayfield, Oneida, Vilas |
| Soil Cleanup Standards | Ashland, Bayfield, Oneida, Vilas |