EPA is proposing the addition of a total of 1,055 water quality limited segments to Oregon’s 303(d) list. See cover letter, enclosures, and appendices below for detailed information on this action, as well as the supporting data and information that EPA relied upon to make these decisions.
EPA seeking public comment on this action. Comment period closes February 6, 2017.
Cover Letter, Enclosures, and Appendices*
*Please note that some of the enclosures and appendices are spreadsheet files listed separately in the box to the right.
Spreadsheet Files
Enclosure 4: EPA Proposed Additions(2 pp, 65 K)
Enclosure 5: EPA Data Sources(2 pp, 41 K)
Enclosure 7: TMDL Litigation Waters(11 pp, 274 K)
Appendix A: Harmful Algal Blooms(4 pp, 19 K)
Appendix B: Aquatic Weeds(4 pp, 25 K)
Appendix C: Biocriteria(4 pp, 17 MB)
Appendix D: Chorophyll A(6 pp, 677 K)
Appendix E: Dissolved Oxygen(15 pp, 13 MB)
Appendix F: E coli(9 pp, 3 MB)
Appendix G: Enterococci(5 pp, 389 K)
Appendix H: pH(10 pp, 4 MB)
Appendix I: Phosphorus(8 pp, 3 MB)
Appendix J: Temperature(9 pp, 10 MB)
Appendix K: Toxics(10 pp, 1 MB)
- Cover Letter: Partial Approval/Partial Disapproval of Oregon's Final 2012 303(d) List (PDF)(3 pp, 65 K, December 21, 2016)
- Enclosure 1: Review of Oregon's 2012 Integrated Report (PDF)(12 pp, 104 K)
- Enclosure 2: Request for Public Comment on Ocean Acidification Impacts in Oregon Marine Waters (PDF)(6 pp, 309 K, December 22, 2016)
- Enclosure 3: Disapproved Delistings EPA Proposes for Category 5 (PDF)(1 pg, 32 K)
- Enclosure 6: EPA Listing Methodology for Oregon 2012 303(d) List (PDF)(22 pp, 172 K)
- Enclosure 8: EPA Corrections to ODEQ 2012 (PDF)(1 pg, 34 K)