11/19/2008 Env Bd Packet - Laserfiche WebLink

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• • • degraded wetland, restoring or conserving adjacent upland buffer or habitat, disconnecting impervious surfaces from direct discharge to stormwater conveyances, or soil amendment /tilling. Analogous to wetland "banking" permitted under WCA, volume control from reestablishing drained wetland, restoring degraded wetland or restoring adjacent upland beyond volume control needed to meet the 2.8 -inch standard may be "banked." Banked volume control credits may be used to meet Rule RMP -3 requirements on a later project within the RMP area by the property owner or, pursuant to private credit sale or transfer, another property owner. Public road projects would not be evaluated under the stormwater quality and volume control requirements of Rule RMP -3. Instead, they would continue to be evaluated under Rule C. Rule C, as recently revised and readopted, incorporates a stormwater quality and volume control framework specifically suited to the conditions of public roadway work. Soil amendment, excavation and filling during development must avoid impeding groundwater flow. Once development is completed, plowed snow must be stored so that it does not drain to wetlands without pretreatment. This commitment would be memorialized in a declaration recorded on the developed property. Easement. The RCWD intends, in conjunction with interested public and private parties, to evaluate and potentially undertake activities to improve and maintain the hydrology and vegetation within the WPC and its associated upland buffer and habitat area. The RCWD, as drainage authority, will continue to maintain the hydraulic efficiency of public drainage systems within the RMP area to preserve their function for the benefit of property owners. Consistent with that, it also reserves the authority to take actions to protect against flooding and enhance the area's wetland ecology. Accordingly, the proposed rule provides for each property owner to convey to the RCWD an easement over wetland within the WPC and associated upland designated as buffer or habitat area. The easement would allow the RCWD to enter, perform work and install structures for the purposes described above. Because the easement would apply only to undevelopable portions of properties RCWD Rule RMP -3 SONAR Letter October 23, 2008 8