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EXHIBIT A 9.17.6 Greenhouse Gas Emissions All GHG emissions are assessed in a cumulative context because no single project can cause a discernible change to climate. AB 32 recognizes the significance of the statewide cumulative impact of GHG emissions from sources throughout the state and sets a performance standard for mitigation of that cumulative impact. Therefore, analysis of GHG emission impacts under CEQA contained in the EIR effectively constitutes an analysis of a project's contribution to the significant cumulative impact of GHG emissions. As described in DEIR Section 4.5 Greenhouse Gas Emissions, the estimated GHG emissions from construction and operation of the proposed Project would be lower than the AQMD Tier 4 Option 3 threshold of 4.8 MTCO2e per year per service population. Therefore, the Project would not result in a cumulatively considerable impact related to GHG emissions, and cumulative impacts would be less than significant. For these reasons discussed in the DEIR, the Project's cumulative effects on greenhouse gas emissions would not be cumulatively considerable. (DEIR, pp. 4.5-13.) 9.17.7 Hazards and Hazardous Materials Hazard related impacts typically occur in a local or site-specific context versus a cumulative context combined with other development projects; although it is possible for combined effects of hazards to occur by adjacent cumulative development that involves hazardous risks. The closest cumulative project is the 2700 North Main Street residential development that is located 0.2 miles north of the Project site. Due to this distance, the potential from hazards to cumulatively increase is limited. In addition, compliance with the relevant federal, state, and local regulations during the construction and operation of related projects would ensure that cumulative impacts from hazardous materials would be less than significant. With implementation of Mitigation Measure HAZ-1, implementation of the Project would not result in the release of hazardous materials into the environment; and therefore, would not result in a cumulative contribution to a hazardous materials impact. Therefore, cumulative impacts related to hazardous materials during construction would be less than significant. In addition, the nearby projects provide residential and commercial uses, that would use the same type of limited hazardous materials as the proposed Project. With regular use and storage of these commonly used household products, such as would occur on the Project site, cumulative impacts would not occur. For these reasons detailed in the DEIR, the Project's cumulative effects relating to hazards and hazardous materials would not be cumulatively considerable when considered with past, current, and future probable projects. (DEIR, pp. 4.6-8 through 4.6-9.) 9.17.8 Hydrology and Water Quality The Initial Study (DEIR Appendix A) details that Section 18-156 of the City of Santa Ana Municipal Code requires all new development and significant redevelopment within the City be undertaken in accordance with the County Drainage Area Management Plan (DAMP), including but not limited to the development project guidance; and any conditions and requirements established by City agencies related to the reduction or elimination of pollutants in storm water runoff from the Project site, which are verified prior to the issuance by the City of a grading permit or building permit. The DAMP requires implementation of site design, source control and treatment control Best Management Practices (BMPs). Resolution No. Certification of the Magnolia at the Park EIR 75E-91 Page 53 of 71