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EXHIBIT A-2 Page 6 of 8 Vegetation - Vegetation cover monitoring will be accomplished through the use of low - altitude aerial photographs, conducted on a annual basis. "Ground truthing" and additional baseline data collection will also be conducted by establishing one representative transect in each of the North Marsh, Bunker Marsh/Lower Roberts Landing Slough, and East Marsh. The following measures of vegetation characteristics will be made along each transect: (1) estimates of percent cover of plant species: and Q) measures of average plant height and depth of litter. These measures would be repeated and the data analyzed once a yeaf for the five-year period. Photos would also be taken along the transects to further document vegetation characteristics. Salt Marsh Harvest 'douse - Trapping for small mammals would be carried out in the North Marsh and Bunker Marsh/Lower Roberts Landing Slough within four years of tidal restoration and then again in the fifth vear. The trapping would consist of at least 300 trap nights in each of the two sites (i.e., North Marsh. Bunker Marsh) and would be carried out in late spring or early summer for comparability with past trapping studies in the area. These past trapping studies would include the 1987 study by Harvey and Stanley Associates and the 1990 study by WESCO. This would provide an indication of post - project relative abundance (i.e. frequency index) of salt marsh harvest mice and their utilization of the study area. Alternatively, relative abundance could be compared against trapping results from other reference sites. Bird Counts - One day bird counts would be made every two months during the first tw o years accounting for different habitat areas, seasonality, and tide level. Counts during years three through five of the tidal reintroduction would be made twice vearly during months of highest bird use. Tidegare Operation Once construction is complete the tidegates on the !worth Marsh culverts would be temporarily equipped with automated recording tide gages. The measured tide heights on the gages would then be compared with the modeled tide heights. The tidegate settings would be adjusted by the need to either increase or decrease water flows as warranted, taking into account the full range of tides that occur. All tidegates and culverts in the WCDP would be inspected at least once monthly. for evidence of scour, sediment deposition and corrosion. Working parts such as screws and hinges would be kept well -greased to keep these parts fully operational. The City Engineer will be responsible for insuring adequate operation of the tidegates in perpetuity. This responsibility will include training of other City employees and/or contractors as necessary to promote their understanding of the purpose of the culverts and tidegates and their ability to successfully maintain these facilities.