Agenda - 05-23-1983 - Laserfiche WebLink

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ATTACHMENT E 9K- , ORANGE COUNTY PLANNING DEPARTMENT RILLS:BOROUGH NORTH CAROLINA, 27278 ,60011 Of Fi 477 .j kv•4 114 MEMO TO: BOARD OF COUNTY COMMISSIONERS FROM: PLANNING STAFF DATE: MAY 17, 1983 SUBJECT: PRESENTATION TO PLANNING BOARD ON STORMWATER. MANAGEMENT At the April 25, 1983 meeting, the Planning Board requested further infor- mation on stormwater management objectives and techniques as part of the Board's ongoing consideration of watershed protection and economic development issues. Ed Holland and David Blaha of the Triangle J Council of Governments ' and Steve Gurley of Wake County Planning Department presented information on stormwater management ad' a means of maintaining water quality and implementation techniques, respectively, - at the Board's April 16, 1983 meeting. A summary of their presen- tations follow: , Ed Holland introduced the topic of stormwater management by identifying the 4 varied objectives for implementing these techniques, including the traditional purposes of flood control and drainage, as well as sedimentation and erosion con- trol and water quality. Holland noted that TJCOG activities in the field of stormwater management are specifically focused in the latter: The concern lies with the pollutant carrying capacity of stormwater runoff and the challenge with keeping these pollitants out of protected bodies of water. Holland conclu- ded that Orange County is progressive in North carolina in recognizing the water quality aspect of the stormwater management problem. : David Blaha explored the techniques of stormwater management identifying those techniques considered the most viable by Triangle- J- COG, those utilized elsewhere in the Country and those specifically addressing industrial development. Blaha reviewed four stormwater management measures with the Board including: • a) infiltration techniques b) detention basins c) impoundments d) density (controls,) a) Blaha indicated that Triangle J COG viewed infiltration techniques as the best approach for stormwater management,, Primaillause-both disoled and suspended Pollutants can be addressed and at relatively r1nimaliçosts,mirilmal ;00:i. if implemented through site design versus strUctural Tmecha- - nisms.i The Staff of Triangle J COG are currently attempting to relate impious.snrfaceS-. to soil infiltration Ca• acity,-and to determine maxi- . mum impervious surface ratios.