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. CHAPTER 4. MONITORING PLAN AND SUCCESS CRITERIA The MA will be monitored for a several year period beginning in 2002 to track the successful implementation of the mitigation measures necessary to begin filling of the Ridges Basin Reservoir. After reservoir filling, a second 5 year period of monitoring will commence to evaluate full mitigation completion. 4.1 Mitigation Success Criteria 4.1.1 Performance Criteria for 95 Percent Completion of Constructed Physical Features As committed to in the 2000 ALP Project FSEIS the completion of constructed physical features is defined as: . All wetland/riparian mitigation lands will be acquired by Reclamation;. . All of the river bottom land will be adequately fenced to prevent livestock trespass. . All river restoration construction completed downstream of Long Hollow; . . Pending monitoring of natural recovery, all river-bank stabilization work completed. . 95% of the mature tamarisk and Russian olive trees greater than 10 feet in height are removed from the MA. . Plantings and re-seeding with desirable species will be initiated for the riparian areas being restored and enhanced immediately following any ground-disturbing or vegetation removal actions. 4.1.2 Performance Criteria for Full Mitigation Success At the end of the project reservoir filling, a 5-year monitoring period will commence in which the following success criteria will be used to determine whether the mitigation measures have been implemented successfully: . All of the fencing is installed and livestock grazing is effectively removed from the MA. . Within the MA, mature tamarisk and Russian olive trees greater than 10 feet in height are removed from the riparian forest-scrub/shrub tree canopy. The tamarisk and Russian olive below the canopy layer (defined as 10 feet here) will be controlled by the implementation of an Integrated Vegetation Management (IVM) plan and reduced to 5% -44-