EXH0701026294

PCHBPollution Control Hearings Board of the State of Washington

_,_ A development proposal on a site containinga stream shall meet thefollowingrequirements. P A. The followingminimumbuffersshallbe establishedfromthe ordinaryhigh water mark(OHWM) or from the top of the bank if the OHWM cannotbe identified: 1. A Class 1 streamshallhavea onehundred(100) footbuffer; .2. A Class 2 stream used by salmonidsshall have a one hundred(100) footbuffer; 3. A Class 2 stream not used by salmonidsshall have a fdly (50) foot buffer;, 4. A Class 3 streamshallhavea twenty-five(25)foot buffer;, 5. Any stream restored, relocated,replaced or enhanced because of a stream alterationshallhave the minimumbufferrequiredforthe stream class involved; 6. Any streamwith an OHWM withintwenty-five (25) feet of the toe of a slopethirtypercent(30%) or steeper,but lessthan fortypercent(40%), /-) shallhave: a. The minimumbuffer requiredfor the stream class involvedor a twenty-five(25) footbufferbeyondthe top of the slope,whichever is greater, if the horizontallength of the slope includingsmall benchesand terracesiswithinthe buffer for thatstreamclass;or b. A twenty-five(25) foot buffer beyond the minimumbuffer required for the stream class involvedif the horizontallengthof the slope includingsmallbenchesandterracesextendsbeyondthe bufferfor that streamclass;and 7. Any stream adjoined by a riparian wetland or other contiguous sensitivearea shall have the buffer required for the stream class involvedor the buffer which appliesto the wetlandor other sensitive area, whicheverisgreater; B. Buffer width averaging may be allowed by the City if it will provide additionalprotection,as longas the total area containedin the bufferon the developmentproposalsitedoesnotdecrease;and C. The use of hazardoussubstances,pesticidesandfertilizersin the stream corridorand its buffer is prohibitedunlessspecificallyallowedby the City. (Ord. 92-1041 § 1) AR 026294 wetland and that greater bidogic and hydrologicfunclionswill be achieved. The formulasin aubsecti_…
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