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The following provisions shall apply to dredging and excavation within a designated hydrologically related critical area:

(1) Dredging in surface waters shall be allowed only where necessary because of existing navigation needs, habitat restoration or improvement, maintenance or construction of water-dependent uses.

(2) Dredging and excavation shall be confined to the minimum area necessary to accomplish the intended purpose or use.

(3) Hydraulic dredging or other techniques that minimize the dispersal and broadcast of bottom materials shall be preferred over agitation forms of dredging.

(4) Curtains and other appropriate mechanisms shall be used to minimize widespread dispersal of sediments and other dredge materials.

(5) Entries across shore and wetland edges to accomplish dredging or excavation shall be confined to the minimum area necessary to gain entry and shall be confined to locations with the least potential for site disturbance and damage.

(6) Dredging and excavation shall be scheduled at times having the least impact to fish spawning, nesting patterns, and other identified natural processes.

(7) Dredge spoils are also considered fill, and shall not be deposited within the stream except where such deposit is in accordance with approved procedures intended to preserve or enhance wildlife habitat, natural drainage, or other naturally occurring conditions.

(8) Additional Shoreline Standards for Dredging and Excavation. The requirements below shall apply to all dredging and excavation activities within shoreline jurisdiction.

(A) All applications for substantial development permits that include dredging shall supply a dredging plan that includes the following information:

(i) The quantity of material to be removed.

(ii) The method of removal.

(iii) Location of spoil disposal sites and measures that will be taken to protect the environment around them.

(iv) Plans for the protection and restoration of the shoreline environment during and after dredging operations.

(B) A dredging operation judged by the administrator to be insufficient for protection or restoration of the shoreline environment shall cause denial of a substantial development permit. (Ord. 2123, § 1 (Att.), 2021.)