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May 16, 2023 City of San Leandro 14200 Chapman Road San Leandro, CA 94578 Attn.: Debbie Pollart, Director, Public Works Subject: San Leandro Creek at Haas Ave – Tree and Bridge Removal Erosion and Sediment Control Plan Project: The Project purpose is to removal a fallen Eucalyptus tree and subsequently destroyed 100-foot span pedestrian bridge that connects Haas Ave to Cary Drive. The Project site is located where Haas Ave dead ends at San Leandro Creek. Project Description: Installation of upstream and downstream cofferdams, with a bypass system in place to bypass existing water flows. Currently there is very little flow, approximately .15 cubic feet per second. After the bypass is in place, BMPs, will be installed along with a fabric covering under the bridge to catch debris. At the end of Cary Drive, an excavator will be mobilized. The fallen trees will be pulled out of the creek, cut, loaded and off hauled from the Cary Drive side. The Haas Drive side with have the small limbs and brush removed, as well as the damaged portion of the guardrail. After removal of the trees, a portion of the Cary Drive chain link fence will be removed to provide access into the creek area to track the excavator down. From a position in the creek level with the damaged bridge, the excavator will selectively demolish and haul out the bridge in pieces up to Cary Drive. The tree removal has an expected duration of 3 days of work. Bridge removal is expected to be a 5 day duration. Both the tree and bridge sections will be placed on the asphalt pavement portion of Cary and demolished into smaller sections, loaded into trucks, and hauled away. After removal of the tree and bridge, the creek will be picked clean of any fallen debris, and the site BMP’s will be removed. Impacts: The project will impact the San Leandro Creek. The Project’s impacts to waters of the State will occur within 50’ upstream and downstream of the footprint of the fallen tree and bridge. The Project will not have new permanent impacts to waters of the State. Temporary construction impacts will occur between the edges of the Creek banks between Haas Ave and Cary Drive. Mitigation: The Project will not have significant permanent or temporary impacts to waters of the State. Mitigation for temporary impacts to waters of the State associated with Project construction will consist of implementing appropriate best management practices (BMPs). To ensure compliance, the following conditions shall be implemented: