13 



iii. 5 acres or greater in size; and 40 percent to 60 

 percent open water at any time during a normal year; and 

 2 or more subclasses of vegetation in a dispersed 

 pattern ; 



F. Regulated wetlands contiguous with salmonid fish-bearing 

 waters, including streams where flow is intermittent; or 



G. Wetlands with significant use by fish and wildlife. 



3) Category III Criteria 



A. Regulated wetlands that do not contain features outlined 

 in category I, II or IV. 



4) Category IV Criteria 



A. Regulated wetlands which do not meet the criteria of a 

 category I or II wetland; and 



B. Isolated wetlands that are less than or equal to one 

 acre in size; and have only one wetland class; and have 

 only one dominant plant species (monotypic vegetation) ; 

 or 



C. Isolated wetlands that are less than or equal to two 

 acres in size, and have only one wetland class and a 

 predominance of exotic species. 



c. Wetland rating categories shall be applied as the regulated 

 wetland exists on the date of adoption of the rating system 

 by the local government; as the regulated wetland may 

 naturally change thereafter; or as the regulated wetland may 

 change in accordance with permitted activities, wetland 

 rating categories shall not be altered to recognize illegal 

 modifications . 



d. Procedures for applying the wetland rating system. Reserved 

 (NOTE; Ecology's procedures for applying the wetland rating 

 system uniformly will be available in Julv 1991.) 



Section 5: Regulated Activities and Allowed Activities 



5.1 Regulated Activities 



A permit shall be obtained from local government prior to 

 undertaking the following activities in a regulated wetland or its 

 buffer unless authorized by Section 5.2 below: 



a. The removal, excavation, grading, or dredging of soil, sand, 

 gravel, minerals, organic matter, or material of any Icind; 



b. The dumping, discharging, or filling with any material; 



c. The draining, flooding, or disturbing of the water level or 

 water table; 



d. The driving of pilings; 



e. The placing of obstructions; 



f . The construction, reconstruction, demolition, or expansion of 

 any structure; 



g. The destruction or alteration of wetlands vegetation 



