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In accordance with Mitigation Measure AIR-2, an air quality analysis for the proposed project component was
<br />prepared by Illingworth & Rodkin, Inc. (“847 Woodside Road Affordable Housing Project Air Quality & Greenhouse
<br />Gas Assessment;” Illingworth & Rodkin, Inc.; May 17, 2024). As discussed in the Illingworth & Rodkin analysis (p.
<br />1), “Air quality impacts would be associated with demolition of the existing land uses, construction of the new
<br />buildings and infrastructure, and operation of the project. Air pollutant emissions were estimated using appropriate
<br />computer models. In addition, the potential health risks associated with construction and operation of the project and
<br />the impact of existing toxic air contaminant (TAC) sources affecting the nearby and proposed sensitive receptors were
<br />evaluated.” The air quality assessment was prepared following BAAQMD’s CEQA significance thresholds (2022
<br />CEQA Guidelines).
<br /> Illingworth & Rodkin used CalEEMod to estimate emissions from construction that are based on the project type,
<br />size, and acreage. Project component land use types and size, and anticipated construction schedule, were also
<br />included in the CalEEMod model run. Based on BAAQMD construction period thresholds of significance, Illingworth
<br />& Rodkin (p. 12) determined that “the unmitigated annualized average daily construction emissions of ROG, NOX,
<br />PM10 exhaust, and PM2.5 exhaust during construction of the project … would not exceed the BAAQMD significance
<br />thresholds during any year of construction….”7 However, Illingworth & Rodkin (p. 16) noted that “[General Plan]
<br />Program PS-2 requires projects to implement feasible air emission reduction measures….” Illingworth & Rodkin (pp.
<br />16-17) concluded that standard dust control Best Management Practices (BMPs), which are identified in the 2022
<br />BAAQMD CEQA Guidelines, would be necessary to ensure that temporary construction dust effects associated with
<br />grading and new construction would be less than significant. The following BMPs are typically implemented by
<br />construction projects throughout the Bay Area under the guidance of BAAQMD:
<br />1. All exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, and unpaved access roads) shall
<br />be watered two times per day.
<br />2. All haul trucks transporting soil, sand, or other loose material off-site shall be covered.
<br />3. All visible mud or dirt track-out onto adjacent public roads shall be removed using wet power vacuum street
<br />sweepers at least once per day. The use of dry power sweeping is prohibited.
<br />4. All vehicle speeds on unpaved roads shall be limited to 15 miles per hour (mph).
<br />5. All roadways, driveways, and sidewalks to be paved shall be completed as soon as possible. Building pads shall
<br />be laid as soon as possible after grading unless seeding or soil binders are used.
<br />6. All excavation, grading, and/or demolition activities shall be suspended when average wind speeds exceed 20
<br />mph.
<br />7. All trucks and equipment, including their tires, shall be washed off prior to leaving the site.
<br />8. Unpaved roads providing access to sites located 100 feet or further from a paved road shall be treated with a 6-
<br />to 12-inch layer of compacted layer of wood chips, mulch, or gravel.
<br />9. Publicly visible signs shall be posted with the telephone number and name of the person to contact at the lead
<br />agency regarding dust complaints. This person shall respond and take corrective action within 48 hours. The Air
<br />District’s General Air Pollution Complaints number shall also be visible to ensure compliance with applicable
<br />regulations.
<br /> The analysis also included estimated emissions from operational activities and used CalEEMod to estimate emissions
<br />from proposed operations, assuming full build-out. The Illingworth & Rodkin analysis (pp. 17-19) estimated project
<br />operation emissions primarily from autos driven by future residents and operation of the emergency generator. The
<br />analysis also included evaporative emissions from architectural coatings and maintenance products (e.g., consumer
<br />products), which are typical ROG emission sources from these types of land uses.
<br /> Project component vehicle trips for future residents were based on data provided by the 847 Woodside project
<br />component applicant, and conservative vehicle model years were used to reflect a more conservative emissions
<br />estimate. Other inputs included emissions associated with solid waste generation, water use/wastewater generation,
<br />and existing uses (to take into account for the existing emissions produced on the site).
<br /> Illingworth & Rodkin (p. 19) determined that “unmitigated net average daily operational emissions of ROG, NOX,
<br />total PM10, and total PM2.5 during operation of the project…would not exceed the BAAQMD significance
<br />7 As explained by Illingworth & Rodkin (pp. 1-2), ROG, NOX, PM10 exhaust, and PM2.5 exhaust are reactive organic gases
<br />(ROG), nitrogen oxides (NOX), respirable particulate matter (PM10), and fine particulate matter (PM2.5).
<br />ATTY/RESO.0070/CC RESO 1900 BROADWAY (CEQA) - EXHIBIT 1 - CEQA CONSISTENCY CHECK LIST
<br />REV: 10-23-24 VR
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