2017-077 - Approving an Addendum to the Final Environmental Imapact

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ENVIRONMENTAL IMPACT REPORT ADDENDUM Bristol Street and Memory Lane Intersection Improvements —Project No. 17-6883 Certlfled 1990 FEIS/EIR Mitigation Measures H-1 SCAQMD Rule 403 will be adhered to, insuring the clean-up of construction -related dirt on approach routes to the site. H-2 Adequate watering techniques will be employed to partially mitigate the impact of construction - generated dust particulates. H-3 Construction equipment will be properly maintained and serviced to minimize exhaust emissions. H-5 The use of energy efficient lighting along Bristol Street (low pressure sodium vapor lights) will be considered to reduce emissions at the power plant serving the area. H-6 Traffic signals along Bristol Street will continue to be synchronized (AQMP control measures K2). H-7 Construction activities will be halted during Stage One and Stage Two smog alerts. Mitigation Measures: No additional new mitigation measures are required. C) Result is a cu mudidively considerable net increase of my criteria pollutant for which the project region is noroNtmmnent under an applicable federal or state mabient air quality standard (inchudiwg releasing emissions which exceed quantitative Ihresholdsfor ozone precursors)? The SCAB is designated by the EPA and the State as being nonattainment for 03, PM,,, and PM,,. In accordance with SCAQMD methodology, any project that does not exceed or can be mitigated to less than the daily threshold values does not add significantly to a cumulative impact As mentioned above, the development of the proposed Project demonstrates that construction and operational activities would not result in emissions in excess of SCAQMD's threshold values. Since the proposed Project would not exceed the SCAQMD's significance thresholds for construction activities or the operations phase, the SCAQMD does not consider emissions from the Project's emissions to add significantly to any cumulative impact Furthermore, it should be noted that the proposed Project would improve traffic flow, reduce idling, and encompass the same amount of road capacity for with the existing lane configuration. As such, the Project would continue to result in a beneficial impact Implementation of the proposed Project would not result in greater impacts than previously analyzed in the 1990 FEIS/EIR. Certifled 1990 FEIS/EIR Mitigation Measures: Refer to 1990 FEIS/EIR Mitigation Measures H-1 through H-3 and H-5 through H-7. Mitigation Measures: No additional new mitigation measures are required. d) Expose sensitive receptors to substmhdal pollutant concentrations? A project could have the potential to expose sensitive receptors to elevated pollutant concentrations if it would cause or contribute substantially to elevated pollutant concentration levels or place the project in an area with elevated pollutant concentrations. An evaluation of air pollutant emissions as it affects local sensitive receptors has been conducted for both the construction and operations phases of the Project As per the 1990 FEIS/EIR, it was determined that sensitive receptors in the vicinity appeared to experience carbon monoxide levels that exceeded state and federal standards. Additionally, it was found that under future conditions with the Bristol Street Widening Project, sensitive land uses adjacent to the intersections analyzed reduced carbon monoxide levels to less than significant once the sensitive receptors were setback far enough from the intersections. It was also noted that the carbon monoxide concentrations were only analyzed during "worst case" conditions and did not reflect concentrations which were more likely to occur which would be less than significant compared to what was observed. The Project configuration, which was also analyzed as part of the 1990 FEIS/EIR, would serve to increase traffic flow through the intersection, but would not increase the overall road capacity compared to the 1990 FEIS/EIR, and would not result in an increase in the pollutant concentrations near sensitive receptors, as previously analyzed the 1990 FEIS/EIR. In addition, as determined in the 1990 FEIS/EIR, the proposed modifications would increase traffic flow and reduce traffic idling which would decrease vehicle emissions. Implementation of the proposed Project would not result in greater impacts than previously analyzed in the 1990 FEIS/EIR. Final I December 2017 3-6 Environmental Consequences