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Screening Health Risk Assessment for the Residences at California Center Project in the City of Pleasanton, California <br />4 <br />TABLE 1 <br />MAXIMUM UNMITIGATED HEALTH RISK IMPACTS FROM INDIVIDUAL OFF-SITE SOURCES <br />Sources <br />Distance <br />(feet) <br />Distance <br />Adjustment <br />Multiplier <br />Applied <br />Cancer Risk with <br />Distance Adjustment <br />Multiplier Applied <br />(# in one million) <br />Chronic Hazard <br />Index with Distance <br />Adjustment <br />Multiplier Applied <br />Maximum Annual <br />PM2.5 with Distance <br />Adjustment <br />Multiplier Applied <br />(µg/m3) <br />Individual Sources <br />BAAQMD ID 200392 1,300 0.04 0.02672 0.00000 0.00004 <br />Applicable Threshold 10 1.0 0.3 <br />Exceeds Applicable Threshold? No No No <br />SOURCES: BAAQMD 2022a, 2022b, 2022c, 2023; ESA 2024. <br />TABLE 2 <br />MAXIMUM UNMITIGATED HEALTH RISK IMPACTS FROM CUMULATIVE OFF-SITE SOURCES <br />Sources Cancer Risk (# in one million) Chronic Hazard Index <br />Maximum Annual PM2.5 <br />(µg/m3) <br />Cumulative Sources <br />BAAQMD ID 200392 0.02672 0.00000 0.00004 <br />Roadways (see note) 20.772 to 58.99 0.015 to 0.058 0.102 to 0.418 <br />Cumulative Source Total 20.799 to 59.02 0.015 to 0.058 0.102 to 0.418 <br />Applicable Threshold 100 10.0 0.8 <br />Exceeds Applicable Threshold?No No No <br />NOTE: Roadways are evaluated as cumulative risks per the BAAQMD Health Risk Screening and Modeling – Mobile Source Screening Map Tool. Roadway <br />risks are presented as a range, with higher risk values corresponding to Project Site areas located nearest to the roadways and lower risk values at interior <br />portions of the Project Site as the buffer distance from the roadways increase. Building setbacks from roadways would result in reduced risks compared to the <br />maximum risk values in the screening impact range. <br />SOURCES: BAAQMD 2022a, 2022b, 2022c, 2023; ESA 2024. <br />References <br />Bay Area Air Quality Management District (BAAQMD), 2022a. Health Risk Screening and Modeling, Stationary <br />Source Screening Map Tool. Available: https://www.baaqmd.gov/plans-and-climate/california- <br />environmental-quality-act-ceqa/ceqa-tools/health-risk-screening-and-modeling. Accessed March 2024. <br />__________, 2022b. Health Risk Screening and Modeling, Mobile Source Screening Map Tool. Available: <br />https://www.baaqmd.gov/plans-and-climate/california-environmental-quality-act-ceqa/ceqa-tools/health- <br />risk-screening-and-modeling. Accessed March 2024. <br />__________, 2022c. Health Risk Calculator with Distance Multipliers Tool. Available: <br />https://www.baaqmd.gov/plans-and-climate/california-environmental-quality-act-ceqa/ceqa-tools/health- <br />risk-screening-and-modeling. Accessed March 2024. <br />__________, 2023. California Environmental Quality Act Air Quality Guidelines. Available: <br />https://www.baaqmd.gov/plans-and-climate/california-environmental-quality-act-ceqa/updated-ceqa- <br />guidelines. Accessed March 2024.