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3. Environmental Checklist San Leandro Treatment Wetland IS/MND 3-43 February 2024 e) Oakland International Airport Land Use Compatibility Plan: OAK airport property borders the Proposed Project site and lies within the airport influence area (AIA), defined in the OAK Airport Land Use Compatibility Plan.35 This area encompasses zones where airport-related factors may significantly impact land uses, subjecting projects to review by the Alameda County Land Use Commission. The OAK Compatibility Plan, aligned with San Leandro’s General Plan, guides off-airport land use compatibility decisions based on the OAK Master Plan. The Proposed Project site primarily falls within Safety Compatibility Zone 6 (Traffic Pattern Zone) in the OAK Compatibility Plan, with a small segment in Zone 3 (Inner Turning Zone). Safety Compatibility Zones inform land use decisions within the AIA. The Proposed Project is most associated with Open Space and Water Treatment land uses, as defined in Table 3-2 of the OAK Land Use Compatibility Plan. Open spaces and water treatment uses pose a potential wildlife attractant that could pose a hazard to aircraft and require mitigation to prevent the attraction of wildlife hazards. Federal Aviation Administration (FAA) and U.S. Department of Agriculture (USDA) guidelines recommend consultations with airport biologists to mitigate this risk.36 City staff engaged with OAK and USDA personnel to address compatibility concerns and met with wildlife biologists on-site to discuss wildlife attraction issues and suitable mitigation measures focused on vegetation management. The City has historically managed the vegetation at the Proposed Project Site to minimize wildlife attraction and reduce mosquito risk. In addition to consulting with USDA, the City is in routine contact with Alameda County Mosquito Abatement District. The planting plan for the Project has been designed to maximize the use of low-growing vegetation that can be periodically removed by mechanical and manual means. Throughout the operations phase, it is possible that unmanaged vegetation near open water could prompt the need for management actions to reduce the risk to public health posed by mosquitos. Similarly, overgrown and dense vegetation can form into bird habitat, which could pose a wildlife hazard risk to OAK. Mitigation Measure HZ-2 aims to minimize mosquito and wildlife attraction risks, incorporating strategies for vegetation management and water treatment efficiency, including mowing, removal of nuisance vegetation of invasive plants, and coordination with the Alameda County Mosquito Abatement District to stock the open water portion of the wetland with mosquitofish (Gambusia affinis) or other suitable management strategies. Additionally, dust control measures, mandated by Mitigation Measure AQ-1, mitigate potential dust emissions during construction, ensuring the Project construction activities do not interfere with pilot visibility or create turbulence. Impact Designation: Less than Significant Impact with Mitigation Incorporated Mitigation Measure HZ-2: Vegetation Management: Maintenance activities will be outlined in a Vegetation Management Plan, which must be developed prior to construction. These activities will encompass periodic draining, which may temporarily halt treatment activities in the treatment wetland to address the establishment of aquatic weeds and 35 Alameda County Community Development Agency, Planning Department. 2010. Oakland International Airport Land Use Compatibility Plan. Available at https://www.acgov.org/cda/planning/generalplans/airportlandplans.htm 36 Federal Aviation Administration. 2020. Advisory Circular 150/5200-33B - Hazardous Wildlife Attractants On or Near Airports. Available at www.faa.gov