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City of Pleasanton—Vineyard Avenue Residential Project <br />Consistency Checklist 15183 Consistency Checklist <br /> <br />44 <br /> <br />Nonetheless, due to the proximity of the proposed construction area to the <br />nearest sensitive receptors to the east, the AQ/GHG Assessment included a <br />HRA evaluating the potential health effects to nearby sensitive receptors <br />from construction emissions of DPM and PM2.5. The HRA included dispersion <br />modeling to predict the off-site concentrations resulting from project <br />construction and estimated lifetime cancer risks and non-cancer health <br />effects. The dispersion modeling was conducted with the American <br />Meteorological Society/Environmental Protection Agency (AMS/EPA) <br />Regulatory Model (AERMOD), the BAAQMD-recommended model for use in <br />health risk assessment modeling. <br />According to BAAQMD, an impact associated with TACs would occur if the <br />aggregate total of all past, present, and foreseeable future sources within a <br />1,000-foot radius from the fence line of a source, or from the location of a <br />receptor, plus the contribution from the project, would exceed the following: <br />• An increase in cancer risk levels (from all local sources) of more than <br />100 persons in one million; <br />• An annual average PM2.5 concentration (from all local sources) of 0.3 <br />micrograms per cubic meter (μg/m3) or greater. <br />• An increase in non-cancer hazard index threshold of 1.0. <br />According to the AQ/GHG Assessment and as shown in Table 6 therein <br />(recreated as Table 3 below), project-generated DPM emissions would result <br />in an increased cancer risk of 8.07 chances in one million at the maximally <br />exposed individual (MEI), increased annual PM2.5 generation of 0.09 μg/m3 for <br />PM2.5, and a non-cancer chronic risk hazard index of 0.01. All three of the <br />foregoing results are below the applicable thresholds of significance. <br />Similarly, the cumulative cancer risk, PM concentration, and hazard index <br />would not exceed BAAQMD project-level thresholds of significance. <br />Therefore, development of the proposed project would not result in the <br />exposure of nearby sensitive receptors to TAC-related health risks. <br />Based on the above, the proposed project would not result in any peculiar <br />effects, and further CEQA review would not be required.