Environmental Declaration WPCP 20240409

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3. Environmental Checklist Summary As shown in Tables 3-4 and 3-5, the construction -related emissions and the operational -related emissions would not result in exceedance of the BAAQMD thresholds. Furthermore, with the inclusion of AQ-1, emissions associated with fugitive dust would be considered less than significant. Therefore, in accordance with the 2023 CEQA Guidelines, the Proposed Project would not result in a cumulatively considerable net increase of any criteria pollutant for which the Project region is in nonattainment under an applicable federal or state ambient air quality standard. Accordingly, no violation of any air quality standard or contribution to an existing or projected air quality violation would occur. Impact Designation: Less -than Significant Impact with Mitigation Mitigation Measure AQ-1.: Implement BAAQMD Basic Construction Mitigation Measures The following BAAQMD BMPs shall be implemented during construction through contractual and specification requirements: • Exterior demolition and construction areas shall be watered periodically to minimize the generation of dust and dirt. • All visible mud or dirt track -out onto adjacent public roads shall be removed using wet power vacuum street sweepers when required. The use of dry power sweeping is prohibited. • All vehicle speeds on unpaved roads shall be limited to 15 miles per hour. • All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible. Building pads shall be laid as soon as possible after grading unless seeding or soil binders are used. • Idling times shall be minimized either by shutting equipment off when not in use or reducing the maximum idling time to 5 minutes (as required by the California airborne toxics control measure, 13 CCR § 2485).17 Clear signage shall be provided for construction workers at all access points. • All construction equipment shall be maintained and tuned in accordance with manufacturer specifications. All equipment shall be checked by a certified visible emissions evaluator. • A publicly visible sign shall be posted with the telephone number and person to contact at the lead agency regarding dust complaints. This person shall respond and take corrective action within 48 hours. BAAQMD's phone number shall also be visible to ensure compliance with applicable regulations. c) Expose sensitive receptors to substantial pollutant concentrations: Construction activities would result in TAC emissions, principally PMso and PM2.5 from diesel exhaust of heavy construction equipment known as diesel particulate matter (DPM). The BAAQMD recommends that lead agencies assess TAC exposure to sensitive receptors within a 1,000-foot radius of a project's fence line. As noted above, the nearest sensitive receptor is over 3,500 feet (0.7 miles) to the south. While Project construction activities would generate DPM, the emissions would last approximately 3 months. Determination of impacts related to exposure to TACs is based on health risk which was assessed as 17 13 CCR § 24Airborne Toxic n r Meij$urg to Limit Di i-Fu I miner i I Motgr Vehicle Idlin San Leandro Treatment Wetland 3-13 IS/MND