Columbia Generating Station Permits
2023 Final NPDES Permit
2023 NPDES Final Permit
| Document Title | Document Date | |
|---|---|---|
| NPDES Issuance Letter | 05/30/2023 | |
| NPDES Fact Sheet | 05/30/2023 | |
| NPDES Permit | 05/30/2023 |
State Waste Discharge Permit
SWDP Revision 1
| Document Title | Document Date | |
|---|---|---|
| SWDP Revision 1 Cover Letter | 09/14/2021 | |
| Temporary State Waste Discharge Permit Revision 1 | 09/14/2021 |
2023 Draft NPDES
NPDES 2023
| Document Title | Document Date | |
|---|---|---|
| Columbia Generating Station NPDES Permit Draft Notice | 02/16/2023 | |
| Columbia Generating Station NPDES Permit Draft | 02/16/2023 | |
| Columbia Generating Station NPDES Fact Sheet Draft | 02/16/2023 |
NPDES 2023 Comment
| Document Title | Document Date | |
|---|---|---|
| 001_Energy Northwest | 03/16/2023 | |
| 002_Department of Natural Resources | 03/23/2023 |
2019 NPDES
NPDES Modification 2019
| Document Title | Document Date | |
|---|---|---|
| NPDES Administrative Extension | 09/13/2019 | |
| Application for Renewal of NPDES Permit No. WA002515-1 | 04/30/2019 | |
| 2019 NPDES Permit Modification | 03/19/2019 | |
| NPDES Permit Modification Fact Sheet Amendment No.2 | 03/19/2019 | |
| NPDES Permit Modification Fact Sheet Errata No. 2 | 03/19/2019 |
Past NPDES
NPDES
| Document Title | Document Date | |
|---|---|---|
| NPDES Permit Effective Dates 09/30/2014 - 10/31/2019 | 11/01/2014 | |
| NPDES Permit Effective dates 05/25/2006 - 05/25/2011 | 05/25/2006 | |
| NPDES Permit Effective dates 4/9/2001 - 4/9/2006 | 04/09/2001 |