| Appendix A | 2018 Monitoring Stations | 8,089k |
| Appendix B | 2018 Dissolved Gas Monitoring Plan | 259k |
| Appendix C | 2018 FOP Plan | 171k |
| Appendix D | 2018 FOP Implementation Report | 7,009k |
| Appendix E | 2018 Exceedance Tracking | 138k |
| Appendix F | 2018 TDG TMDL Implementation Summary | 45k |
| Appendix G | 2018 Walla Walla District TDG Report | 1,201k |
| Appendix H | 2018 Portland District TDG Report | 567k |
| Appendix I | 2018 Seattle District TDG Report | 659k |
| Appendix J | 2018 Fish Passage Summary | 919k |
| Narrative | 2018 Total Dissolved Gas Report | 347k |