Item 27 - Appeal Application Nos. 2020-03 and 2020-04 - Central Pointe Mixed-Use Development

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EXECUTIVE SUMMARY In 2005, the California Air Resources Board (ARB) promulgated an advisory recommendation to avoid setting sensitive land uses within 500 feet of a freeway, urban roads with 100,000 vehicles per day, or rural roads with 50,000 vehicles per day. The ARB indicates that due to traffic - generated pollutants, there is an estimated increased cancer risk incidence of 300 to 1,700 per million in within this domain. At some point however, the increased cancer risk incidence due the effects of freeway/roadway corridor pollutants become indistinguishable from the ambient air quality condition. In this regard, the effects of freeway/roadway-source pollutants that may impact the Project site are already acknowledged and accounted for within the ambient air quality discussions presented within this Section. More specifically, the MATES -IV Study data for the Project site comprehensively reflects increased TAC-source cancer risks affecting the City and Project site, inclusive of increased cancer risks due to freeway sources. The 2005 ARB guidance noted previously, information made available through the MATES -IV Study, and configuration and design of the Project would suggest that further assessment of freeway -source pollutant impacts is not warranted. Notwithstanding, this Off -Site Freeway - Source Air Toxic Health Risk Assessment has been prepared for the Project and is intended to: • Comply with and support CEQA Section 15003 (i) policies addressing adequacy, completeness, and a good -faith effort at full disclosure; • Disaggregate potential freeway -source air pollutant health effects from other background conditions identified in the MATES IV Study; and • Identify means to reduce the specific effects of freeway -source pollutants at the Project site. Findings and conclusions of this Assessment are summarized below. SUMMARY OF FINDINGS For carcinogenic exposures resulting from exposure to toxics from the freeway, the summation of risk for the maximum exposed residential receptor totaled 3.58 in one million and will not exceed the SCAQMD significance threshold of 10 in one million. For chronic noncarcinogenic effects, the hazard index identified for each toxicological endpoint totaled less than one. For acute exposures, the hazard indices for the identified averaging times did not exceed unity. Therefore, noncarcinogenic hazards are calculated to be within acceptable limits and a less than significant impact would occur.