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4.Written Comments on the Draft EIR and Responses to Comments project occurs over a much larger geographic area than the immediate project vicinity and because the effects of most criteria pollutants are widely distributed throughout the air basin. The specific example of ozone, a key component of smog, illustrates how the increase in air emissions that would be caused by the proposed EDZ relates to regional vs. local conditions. Ozone is not directly emitted by vehicle exhaust; rather, nitrogen oxides and reactive organic gases that are emitted by vehicle exhaust are precursors to ozone formation. These emissions form ozone in the atmosphere under high temperature conditions in the presence of sunlight. Nitrogen dioxide(NO2)may be visible as a coloring component of a brown cloud on high pollution days, especially in conjunction with high ozone levels. High pollution days are associated with emissions that occur on a regional level, rather than a local level. Regarding the local effects of toxic air contaminants such as diesel particulate matter(DPM)and respirable particulate matter(PM2.5), as discussed under Impact 4.B-4 in Section 4.B,Air Quality, of the Draft SEIR, the analysis found that effects would be less than significant(with mitigation required only should a sensitive use such as senior housing be proposed within the EDZ). For example,the distance between the area of the proposed EDZ and the Val Vista neighborhood(approximately 1,000 feet for locations within the EDZ except that of the existing Fed Ex facility)would preclude new uses within the EDZ from generating significant localized air quality impacts to this neighborhood. The 2005 California Air Resources Board Air Quality and Land Use Handbook, referenced in Section 4.B, Air Quality of the Draft SEIR, uses 1,000 feet as the screening distance from certain pollutant-generating uses because risks to local uses are much lower beyond this distance; 1,000 feet is therefore the recommended distance for local agencies to consider when evaluating whether sensitive land uses such as residences should be permitted. Master Response to Comments About the Impacts of the Proposed EDZ on Water Use The Draft SEIR analyzed the impacts of implementing the proposed EDZ on utility systems, including water systems, in Section 4.E, Other Topics. Projected water demand was not estimated or presented in Section 4.E. Instead, the Draft SEIR relied on Mitigation Measure 4.E-9, which requires all development projects within the EDZ to provide written verification prior to development from the water provider or the City that water is available. With implementation of this measure, impacts to water supplies would be less than significant. It is noted that the City's 2010 Urban Water Management Plan(UWMP; City of Pleasanton,2011)concludes that the City has adequate water supplies to accommodate anticipated growth through the year 2030.Non- residential growth attributable to the proposed EDZ would not exceed the growth anticipated in the UWMP, and thus the EDZ water demand is within the demand forecast in the UWMP. Section 4.E also explained that, because of the four-year-long drought, the City has implemented, and will continue to implement, measures and programs such as its recycled water program and stricter water conservation measures to improve water reliability. Additionally, the City would apply a standard condition of project approval for all projects within the EDZ that requires recycled water infrastructure to be installed and connected when and if recycled water Johnson Dove Economic Development Zone 4-13 ESA/140421 Supplemental EIR Response to Comments March 2016