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Pleasanton Cateway Environmental Checklist c) The proposed project is an intill site within an existing business park surrounding area by com- mercial, industrial, and institutional properties. Therefore, this would be a no-impact. 3. AIR QUALITY Environmental Setting The Bay Area has remained one of the cleanest of the five major urban California air basins in recent years, however, there are still several days annually when air pollution exceeds the federal and state air quality standards. These standards, set at different concentrations for each of the major air pollutants have been developed to protect public health. The Bay Area Air Quality Management District (BAAQMD) regulates air quality in the Bay Area Re- gion through its permit authority over most stationary emission sources and through its planning and re- view activities. The BAAQMD is the main permitting agency for air pollutant sources. Standards of Significance For purposes of this environmental document, an impact is considered significant if the proposed project would: • Result in pollution emission levels above those established by BAAQMD in either short term (construction related) or long term(traftic). Less 'T'han Potentially Significatr[ Less'rhan Signitictmt With Mitigation Significant No Issues Impact Incorporated Impact Impact Air Quality Where available, the significance criteria established by the applicable air quality management or air pollution control district may be relied upon to make the,following determinations. Would the project: a) Conflict with or obstruct implementation of the appli- ^ ^ X^ ^ cable air quality plan`? b) Violate any air quality standard or contribute substan- ^ ^ ~ ^ tially to an existing or projected air quality violation? b) Result in a cumulatively considerable net increase of ^ ^ ~ ^ any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard (including releasing emis- sions, which exceed quantitative thresholds for ozone precursors)? d) Expose sensitive receptors to substantial pollutant con- ^ ^ X^ ^ centrations? Pleasanton Gateway Initial Study Page I S of 37 Novetnber 8, 2006