Agenda - 08-26-1991 - Laserfiche WebLink

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60 chosen to use these structures or decides to allow high density development must assume the ultimate responsibility for these structures to assure that they are properly operated and maintained. There are several ways that this can be accomplished, including forming stormwater utilities, charging impact fees, requiring bonds, etc. It is acceptable to have a business or homeowners association take the initial responsibility for the operation and maintenance of the structure. However, it is the responsibility of the local government to ensure such an entity would adequately perform the necessary requirements. If not, the local government will assume all responsibility and its accrued expenses. if local governments choose to use regional stormwater control structures, they should be aware that such structures may require additional environmental review and authorization (401 or 404 permits) by the U.S. Army Corps of Engineers. In addition, local governments should examine the likelihood of water quality degradation that might occur to the water supply waters upstream of the regional structure. on -site alternatives or small regional facilities should be given preference ever large systems. • What is meant by "protected area" as referred to in the rules for WS -IV water supplies? In a number of cases the WS -IV classification will be applied to segments of a whole river basin that are used for water supply purposes. The statute (G.S. 143- 214.5) states that water supply watersheds shall be required to comply with the minimum statewide management requirements for water supply. protection. It was felt that it would be unrealistic to require all of the local governments (municipalities, counties, etc.);that have land use authority within a large river basin to adopt and enforce water supply protection ordinances when the drainage area may encompass several thousand square miles. DEM staff had initially proposed to address these water supplies on a case-- by--case basis to determine how much of the entire drainage area would be required to install ordinances. Staff intended to include a substantial portion of these river basins in the protected areas. During the August 1990 public hearing process it became clear that choosing a fixed size for all WS -IV protected areas for these very large drainage systems would be more equitable. While this size should be considered to be the minimum protected area needed, it is approximately the same size as the WS -II and WS -III watersheds. The protected area for WS -Iv water supplies can, however, in some cases encompass the entire drainage area. The protected area size that was adopted for these large drainage systems states that the boundaries of such shall extend 5 miles upstream and draining to water supply reservoirs (measured from the normal pool elevation) or to the ridge line of the wat- ershed (whichever comes first); or 10 miles upstream and drain- ing to intakes located directly in the stream or river (run -of- the- river), or to the ridge line of the watershed, (whichever 14