Agenda - 08-26-1991 - Laserfiche WebLink

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61 comes first). These boundaries can be delineated by using major landmarks such as highways or property lines if these landmarks are immediately adjacent to the appropriate outer boundary of 5 or 10 miles. These are minimum boundaries and local government may extend the protected area as necessary. In 9_ng al, water supplies with large drainage areas will likely be reclassified as class WS -Iv. Water supply ordinances are required in the critical area (defined as in the other water supply classifications) and in the protected areas out- side the critical area. The approximate outer boundaries of the protected areas (where applicable), and critical areas will appear in the schedule of classifications for each river basin (15A NCAC 2B .0302 - .0317). • How is the 10% nonresidential development determined for WS -II and WS -III watersheds? Ten percent (10 %) of a local government's jurisdiction within a water supply watershed may be used for new nonresidential development outside of the critical area at densities of up to 70% built -upon area. Local governments that have chosen low density development and thus are not required to use structural stormwater controls do not have to incorporate these controls for this new nonresidential development. However the adopted rules require that nonstructural management practices to minimize water quality impacts be implemented. Local governments that have chosen the high density approach to development and thus must use structural stormwater controls (wet detention basins) may still develop up to 70% built -upon surface area for new nonresidential development outside of the critical area but must incorporate structural controls designed for the first one inch of rainfall. In both instances, additional nonresidential development would be allowed to occur as long as the-built-upon area limitation is complied with for the appropriate classification of the water supply. It should be noted that a local government is not required to allow any nonresidential development to occur. • What are "discharging landfills "? New federal regulations require all new landfills to have liners, monitoring equipment and other measures to detect and /or prevent leachate from entering the environment. New landfills must make provisions for collecting the leachate. The leachate -can be handled in one of four ways; 1) treated and sprayed back on the land, 2) trucked off -site to a wastewater treatment facility, 3) piped off -site to a wastewater treatment facility, or 4) treated on -site and discharged to a receiving stream. For the purpose of the water supply protection rules, the fourth method listed is considered a "discharging landfill" and the other three nondischarging. 15