Reso 1996-081 to 085 - Laserfiche WebLink

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EXHIBIT A-1 Page 5 of 6 Vegetation - Three to five permanent transect locations in each of the Nora► Marsh, Bunker Marsh/Lower Roberts Landing Slough, and East Marsh would be established during the baseline year (prior to WCDP construction) and the following measures of vegetation characteristics made: (1) estimates of percent cover of plant species; (2) measures of average plant height and depth of litter; and (3) biomass measures. These measures would be repeated and the data analyzed once a year for the five-year period. Photos would also be taken along the transects to further document vegetation characteristics. Salt Marsh Harvest Mouse - 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 at the five year mark. The trapping would consist of at least 300 trap nights in each site 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 two years accounting for different habitat areas, seasonality, and tide level. Counts during years three through five of the tidal reintroduction would be made twice yearly during months of highest bird use. Soil Salinity - Samples of sediment would be made at randomly selected locations associated with each of the transects established for the vegetation studies. Tests of soil salinity and pH would be made on an annual basis. Tide at? re Onerarion Once construction is complete the tidegates on the North 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 "fine-tuned" as warranted, taking into account the full range of tides that occur over a month or year. 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. 14