08/28/2006 Council Packet - Laserfiche WebLink

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• Phase 3 — Additional Restoration and Management Needs - Outlot D Phase 3 includes recommendations for implementing an ecological restoration and management plan for Outlot D (29.9 acres, primarily partially drained wetland). As previously mentioned, additional resources will need to be identified and obtained by the City and /or the Homeowner's Association to successfully implement the restoration and management tasks described for Outlot D. This conceptual plan assumes that hydrologic restoration (such as impoundments, flooding, water retention) of the wetlands within Outlot D will not be possible, due to the jurisdictional ditch that is established and maintained within Outlot D. However, hydrologic restoration of the wetlands in Outlot D will bring about optimal ecological (and pre - settlement) conditions, and opportunities to restore the pre -ditch hydrology of these wetlands (completely, or in part) should be investigate. If hydrologic restoration of these wetlands is possible in the future, through a collaborative approach between the Homeowner's Association, the City, the US Army Corps of Engineers, and/or the Rice Creek Watershed District, the following recommendations and restoration approach should be revised so as to incorporate restored wetland hydrology and wetter conditions within the proposed restoration area(s) of Outlot D. Opportunities to apply for, design, and establish a wetland mitigation bank should be pursued by project collaborators prior to implementation of restoration and management prescriptions. Establishment of a wetland mitigation bank will require additional detailed documentation of pre- restoration environmental conditions and ecological quality to justify the award of new wetland credits and public value credits following the successful implementation of restoration and management activities and documentation of restoration response and success. Furthermore, establishment of a wetland mitigation bank will require more detailed monitoring a reporting of annual changes /improvements to wetland vegetation and habitat conditions. Year One (January 1 through December 31) - Outlot D Restoration and Management Tasks • Prescribed burn plans will be written and burn permits will be acquired in the first quarter of the first year; • Prescribed burning plan will be implemented within the wetlands and upland islands of Outlot D (29.9 Acres) in the early second quarter of year one (i.e. April and May), or the fourth quarter of year one (i.e. October and November) if conditions in the spring are not suitable to implement the prescribed burn; • Reed canary grass will be chemically treated with Sethoxydim grass - specific herbicide and/or Glyphosate herbicides in the early spring (late second quarter) or fall (third and fourth quarters). Monotypes of reed canary grass will be treated with a boom sprayer with Glyphosate herbicide. Small patches of reed canary grass will be chemically treated with Sethoxydim grass- specific herbicides, to minimize impacts to associated native sedges and forbs. Spot treatment of reed canary grass will be accomplished with a backpack sprayer to limit/eliminate overspray; • Cattail monotypes will be chemically treated with Glyphosate in the fall (third or fourth quarters) of year one. • Common buckthorn, glossy buckthorn, and Tartarian honeysuckle will be cut from upland islands and the biomass removed from the site. Following cutting, stumps will be The Preserve Conservation Development - Restoration and Management Plan 25