1. (a) Any proposed compensatory mitigation based on stream restoration or enhancement shall be designed to meet as many of the following goals as practicable:

   1. (1) Increase or restore native ecosystem productivity and biodiversity;
   2. (2) Increase or restore sediment, nutrient, and particulate transport and retention/recycling dynamics;
   3. (3) Restore the natural hydrologic regime;
   4. (4) Support or improve migration and movement of aquatic biota;
   5. (5) Increase or restore the availability or accessibility of upstream aquatic habitats;
   6. (6) Increase habitat complexity of the stream ecosystem;
   7. (7) Increase sediment and nutrient retention in riparian areas and floodplains;
   8. (8) Improve thermal regimes, such as adding riparian vegetation to provide shade;
   9. (9) Improve water quality;
   10. (10) Improve access to refuge and reproductive habitat for aquatic organisms;
   11. (11) Reduce the likelihood of water surges and flash flooding; and
   12. (12) Restore a dynamic channel boundary so as to allow a natural migration of the channel within the floodplain.

2. (b) The applicant shall consider the following types of projects:

   1. (1) Upgrading or removing existing culverts;
   2. (2) Restoring or enhancing riparian and floodplain vegetation;
   3. (3) Re-establishing connections to floodplains and side channels;
   4. (4) Removing dams or culverts that are effectively functioning as dams;
   5. (5) Removing rip-rap and concrete banks and channels and revegetate;
   6. (6) Improving stormwater storage and processing;
   7. (7) Enhancing or restoring riparian buffers;
   8. (8) Installing coarse woody material in the stream or along its banks, or both;
   9. (9) Using low impact development (LID) technology such as pervious surfaces, rain gardens, and filter strips; and
   10. (10) Removing pavement and other impervious surfaces.

Source. #11000, eff 2-1-16; ss by #12808, eff 12-15-19 (See Revision Notes #1 and #2 at chapter heading for Env-Wt 800)