- 2010 Lamont CA – KCEHS petroleum project (PDF File – 143 KB)
- 2015 Blythe CA – SWRCB Colorado Regional petroleum project (PDF File – 1826 KB)
- 2015 Ventura CA – County of Ventura project – chlorinated project (PDF File – 394 KB)
- 2016 San Luis Obispo CA – Central Coase RWQCB – petroleum project (PDF File – 541 KB)
- 2017 Chandler AZ – Arizona DEQ – refinery cleanup (PDF File – 240 KB)
- 2017 Marietta GA – Georgia DNR – petroleum project (PDF File – 134 KB)
- 2017 SLC Utah – DERR protroleum project (PDF File – 77 KB)
- 2018 Long Beach CA – LA RWQCB petroleum project (PDF File – 342 KB)
- 2018 Petaluma CA Sonoma County petroleum project (PDF File – 741 KB)
- Case Closure Letter – Georgia Department of Natural Resources (PDF File – 43 KB)
- Case Closure Letter – Idaho Department of Environmental Quality (PDF File – 56 KB)
- Additional Case Closure Letters (PDF File – 2.69 MB)