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Hacienda Mixed Use Rezoning Initial Study Significance Criteria The impact questions above constitute the significance criteria for this environmental topic. Also, the significance criteria related to question 3b) are further explained below. The significance criteria established by the Bay Area Aix quality Management District (BAAQMD) is used to determine the significance of air quality impacts. A project would have a significant impact on air quality if the proposed project and uses would cause total criteria air pollutant emissions (i.e., from both stationary and mobile sources) to equal or exceed the following BAAQMD defined thresholds: Reactive organics 80 lbs/day Nitrogen oxides 80 lbs /day Particulate matter (PM 80 lbs/day According to BAAQMD Guidelines, proposed projects would warrant carbon monoxide analysis if (1) daily CO vehicle emissions would exceed 550 lbs /day, (2) project traffic would impact intersections or roadway links operating at Level of Service (LOS) D, E or F, or would cause LOS to decline to D, E, or F, or (3) project traffic would increase traffic volumes by 10 percent or more, unless the increase in traffic volume would be less than 100 vehicles per hour. A project would have a significant impact on air quality if the following threshold were exceeded: Carbon monoxide (CO) 9 parts per million (ppm) averaged over 8 hours, and 20 ppm averaged over 1 hour Finally, according to the BAAQMD Guidelines a project that would individually have a significant air quality impact would also be considered to have a significant cumulative air quality impact. No regulatory agency has adopted standards of significance with regard to toxic air emissions from mobile sources. Discussion of Checklist Items Less than Significant Impacts. Currently the City is in compliance with State and federal carbon monoxide standards. In the future, carbon monoxide emission rates from motor vehicles are expected to decline from their present average values resulting in lower future carbon monoxide emissions. Future cumulative development in Alameda County would drop about 72 percent from 2005 to 2025, as shown on Table 1, below. Even with increased development in the Bay Area and in Pleasanton, carbon monoxide emission rates would also be expected to drop. Development impacts resulting from this proposed zoning change have been considered in this cumulative total. TABLE 1 PROJECTED COUNTY -WIDE VEHICULAR EMISSIONS, 2005 AND 2025 (TONS /DAY) 2005 2025 Change Vehicle Miles Traveled 36,218,000 48,872,000 35 Diesel Consumption (gallons) 409,030 481,420 18 Gasoline Consumption (gallons) 1,755,530 2,342,660 33 Pollutants (in Tons per Day) Reactive Organic Gases (ROG) 31.03 11.11 65 Nitrogen xi tdOXF 72:3} 345- 72% Sulfur Oxides (SOX) 0.57 0.27 53 Draft, Subject to Revision 9 8/31/21)09