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ENVIRONMENTAL IMPACT REPORTADDENDUM <br />Bristol Street Widening Phase IIIA — Civic Center Drive to Washington Avenue <br />ACRONYMS AND ABBREVIATIONS <br />AAQS ambient air quality standards <br />ADA American with Disabilities Act of 1990 <br />APE Area of Potential Effect <br />AQMP Air Quality Management Plant <br />BMPs best management practices <br />CAAQS California ambient air quality standards <br />CalEEMod SCAQMD California Emissions Estimator Model <br />Caltrans California Department of Transportation <br />CEQA California Environmental Quality Act <br />CO carbon monoxide <br />CO2 carbon dioxide <br />CPRC California Public Resources Code <br />CRHR California Register of Historical Resources <br />CWA Clean Water Act <br />dB decibels <br />dB(A) A- weighted decibels <br />EPA US Environmental Protection Agency <br />FEIS /EIR Final Environmental Impact Statement / Environmental Impact Report <br />FHWA Federal Highway Administration <br />FTIP Federal Transportation Improvement Program <br />GC General Commercial <br />GHG greenhouse gas <br />1 -405 San Diego Freeway <br />LOS Level of Service <br />LSTs Localized Significance Thresholds <br />mph miles per hour <br />NAAQS National Ambient Air Quality Standards <br />NEPA National Environmental Policy Act <br />NO2 nitrogen dioxide <br />NOx nitrogen oxides <br />NPDES National Pollutant Discharge Elimination System <br />03 ozone <br />OCTD Orange County Transit District <br />PM10 particulate matter less than less than or equal to 10 microns in diameter <br />PM2,5 particulate matter less than less than or equal to 2.5 microns in diameter <br />ppm parts per million <br />Project Bristol Street Widening Phase IIIB — 176' Street to Washington Ave. Project <br />ROG reactive organic gases <br />RTIP Regional Transportation Improvement Program <br />SCAB South Coast Air Basin <br />SCAG Southern California Association of Governments <br />SCAQMD South Coast Air Quality Management District <br />SIPS state implementation plans <br />Sox sulfur oxides <br />SP1 Specific Plan <br />SR -22 State Route 22 <br />SWPPP Stonnwater Pollution Prevention Plan <br />TCMs Transportation Control Measures <br />UBC Uniform Building Code <br />ANA 305 -011 (PER 02) CITY OF SANTA ANA (01/19/2015) W PAGE iii <br />