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Screening Health Risk Assessment for the Residences at California Center Project in the City of Pleasanton, California 3 approximately 1,320 feet or one-quarter mile). In order to provide a conservative and health protective assessment, the source located within approximately one-quarter mile has been included in this assessment. The source is identified by the BAAQMD as follows: BAAQMD ID 200392 (Orchard Supply LLC, Generator, 4555 Rosewood Drive, Pleasanton, CA 94588). Stationary source cancer risk, hazard estimates, and PM2.5 concentrations are adjusted to account for the distance of the source from the Project Site. The adjustment factor is obtained from the BAAQMD Health Risk Calculator with Distance Multipliers Tool (BAAQMD 2022c) for diesel internal combustion engines (BAAQMD ID 200392). The distance is based on the source location provided in the BAAQMD’s Health Risk Screening and Modeling – Stationary Source Screening Map Tool (BAAQMD 2022a) and the nearest Project Site boundary, as shown in Figure 2. Impacts from nearby roadways were analyzed consistent with the BAAQMD CEQA Guidelines (BAAQMD 2023). The BAAQMD provides screening tools to assess the cumulative impact of roadways with 10,000 average daily trips (ADT) and greater on nearby receptors. The cumulative impact of roadways with 10,000 ADT and greater on nearby receptors for cancer risk, hazard estimates, and PM2.5 concentrations was estimated using the BAAQMD’s Health Risk Screening and Modeling – Mobile Source Screening Map Tool (BAAQMD 2022b). The roadway sources include Owens Drive and Rosewood Drive in the vicinity of the Project Site, as shown in Figure 2. The Project Site is not located in the vicinity of rail sources; therefore, the Project Site does not have adverse impacts from rail sources. Health Risk and Hazard Results As discussed previously, the BAAQMD’s set of screening analysis tools was used to identify off-site sources of TACs. The BAAQMD Stationary Source Screening Map Tool (BAAQMD 2022a) indicates one permitted TAC source in the area, but none located are within 1,000 feet of the Project Site boundary. As a conservative and health protective assessment, the source located within approximately 1,320 feet (one-quarter mile) was identified based on BAAQMD data and has been included in this assessment. The cancer risk, hazard estimates, and PM2.5 concentration impacts at the Project Site from the stationary source is summarized in Table 1. As shown, the Project impacts from the stationary source would not exceed applicable thresholds and, therefore, impacts would be less than significant. The BAAQMD Mobile Source Screening Map Tool (BAAQMD 2022b) was used to evaluate health risks at the Project Site from roadways in the vicinity of the Project Site with 10,000 ADT and greater, which include Owens Drive and Rosewood Drive in the vicinity of the Project Site. The cancer risk, hazard estimates, and PM2.5 concentration impacts at the Project Site from these roadway sources are summarized in Table 2. As shown, the Project impacts from these roadway sources, along with the cumulative risks from the stationary sources, would not exceed applicable thresholds and, therefore, impacts would be less than significant. Supporting data from the BAAQMD Stationary Source Screening Map Tool, Mobile Source Screening Map Tool, and Health Risk Calculator with Distance Multipliers Tool are provided in Appendix A of this memorandum.