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['Brian wiese -:OY-;terSloug~~nvboc:doc .... ~~--, pagelJ East Bay Regional Park District ~ovennber14,2005 Page 2 for their consistency with the Commission's federally-approved management program for I the Bay. ~ Pedestrian Bridge and Bay Fill Among other requirements, Section 66605 of the McAteer-Petris Act requires that fill (i.e., solid, pile-supported, cantilevered, or floating fill) in the Commission's Bay jurisdiction should only be authorized when: (1) the public benefits from the fill clearly exceed public detriment from the loss of water areas; (2) the fill is limited to water-oriented uses or minor fill to improve shoreline appearance or public access; (3) there is no alternative upland location; (4) the fill is the minimum amount necessary; (5) the fill minimizes harmful effects to the bay; such as the reduction or impairment of the volume surface area or circulation of water, water quality, fertility of marshes or fish and wildlife resources; and (6) that the fill will, to the maximum extent feasible, establish a permanent shoreline. The preferred bridge alternative would be approximately 348 feet long with a clear travel width of 10 feet and a railing height of 54 inches. Three piers consisting of four-foot-in- diameter, cast in steel concrete piles would support the preferred bridge structure. An alternative trestle bridge structure was analyzed that would be approximately the same width and height, but would require approximately 78 steel piles to be driven into the slough bottom. The preferred bridge alternative appears to require less fill in the Commission' s Bay jurisdiction and thus could be authorized more easily by the Commission than the trestle bridge alternative. To receive authorization for the proposed bridge the City of San Leandro *ould need to provide calculations of the Bay fill that would be required for both the preferred bridge alternative, and the alternative bridge designs that have been evaluated. In general, these calculations should include the square footage of the Bay the proposed bridge would cover, the volume in cubic yards of the proposed bridge pilings, the landing constructed for the bridge, and any Bay fill (temporary or permanent) that would be associated with the construction of the trail. In addition, please evaluate whether the proposed project, and the amount of Bay fill proposed, would be consistent with the Commission's law s and policies on fill. Please also include in your analysis consideration of why the proposed bridge design would involve the minimum fill necessary to meet the goals of the project. If the proposed fill would cover 10,000 square feet of fill or more, the project must be reviewed at a Commission public hearing and vote. Preferred Bay Trail Alignment and Trail Alternatives The preferred Bay Trail connection north of Oyster Bay Slough would be a 10-foot_W1~de, 630-foot-long trail with twcrfoot-wide shoulders. The trail would be constructed by widening the existing access road for the City of San Leandro' s wastewater treatment ponds. This levee would be widened on its north side by installing a retaining structure and . I I L_._ #3-2 I I #3-3 i i I ~