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3. Environmental Checklist <br /> <br />San Leandro Treatment Wetland <br />IS/MND <br />3-12 February 2024 <br /> <br />heavy equipment and overlap of Phases 1 and 2 result in NOx emissions of 43.3, below the BAAQMD <br />significance threshold, but higher than typical projects due to the condensed schedule. Although <br />construction emissions from the Proposed Project would not exceed BAAQMD thresholds, the BAAQMD <br />requires that all projects employ BMPs for fugitive dust, regardless of whether a project exceeds <br />applicable thresholds of significance. By implementing these BMPs, the BAAQMD considers a project’s <br />impacts to be less than significant for fugitive dust emissions. Therefore, these measures are included <br />as Mitigation Measure AQ 1 below. As shown below, construction of the Proposed Project would not <br />result in a cumulatively considerable net increase in a criteria air pollutant for which the air basin is <br />classified as non-attainment with the National Ambient Air Quality Standards. <br />Table 3-4. Construction-Related Emissions <br />Year Reactive Organic Gas (ROG) Nitrogen Oxide (NOx) Particulate Matter- <br />Coarse (PM10) Exhaust <br />Particulate Matter-Fine (PM2.5) <br />Exhaust <br />lbs/day (max) <br />2024 4.42 43.3 1.45 1.35 <br />BAAQMD <br />Thresholds 54 54 82 54 <br />Exceeds <br />Threshold No No No No <br />Source: BAAQMD 2022; Appendix A; Note: lbs/day = pounds per day <br />Operational Impacts <br />Operational emissions would result from a minimal increase in vehicle trips anticipated by off-site <br />maintenance staff and utilization of equipment to maintain the vegetated areas. Day-to-day operations <br />of the wetland, which are minimal, would be achieved by existing staff located on site. As shown in <br />Table 3-5, operation of the Proposed Project would not result in a cumulatively considerable net <br />increase in a criteria air pollutant for which the air basin is classified as non-attainment with the <br />National Ambient Air Quality Standards. <br />Table 3-5. Operations-Related Emissions <br /> <br />Reactive Organic Gas <br />(ROG) Nitrogen Oxide (NOx) Particulate Matter-Coarse <br />(PM10) Exhaust <br />Particulate Matter-Fine <br />(PM2.5) Exhaust <br />lbs/day (Max) <br />Mobile 0.0003 0.0001 <0.00005 <0.00005 <br />Area <0.00005 - - - <br />Energy 0 0 0 0 <br />Total 0.0003 0.0001 <0.00005 <0.00005 <br />BAAQMD Thresholds 54 54 82 54 <br />Exceeds Threshold No No No No <br />Source: BAAQMD 2022; Appendix A; lbs/day = pounds per day. <br />Note: 1 The mobile sources are not “new” emissions as the number of students and employees would not. Mobile <br />emissions would continue to be regulated through the state GHG reduction actions (fuel emission and electric <br />vehicle requirements).