Volume 2: Draft Gorst Planned Action Environmental Impact Statement

GORST PLANNED ACTION EIS | AFFECTED ENVIRONMENT, SIGNIFICANT IMPACTS, AND MITIGATION MEASURESTable 3.3-1National and Washington State Ambient Air Quality StandardsFederalPollutant Primary SecondaryCarbon monoxide (CO)Ozone8-hour average a1-hour average a9 ppm35 ppmNo standardNo standardState9 ppm35 ppm8-hour average b 0.075 ppm 0.075 ppm 0.075 ppmTotal suspended particles (TSP)Annual average24-hour average cParticulate matter (PM)—PM10No standardNo standardNo standardNo standard60 µg/m 3150 µg/m 324-hour average c 150 µg/m 3 150 µg/m 3 150 µg/m 3Particulate matter (PM)—PM2.5LeadAnnual average15 µg/m 315 µg/m 315 µg/m 324-hour average d 35 µg/m 3 35 µg/m 3 35 µg/m 3Quarterly average 1.5 µg/m 3 1.5 µg/m 3 1.5 µg/m 3Sulfur dioxide (SO2)Annual average24-hour average a3-hour average a1-hour average eNitrogen dioxide (NO2)Annual average1-hour average f0.03 ppm0.14 ppmNo standardNo standard0.053 ppm0.100 ppmNo standardNo standard0.50 ppmNo standard0.053 ppmNo standard0.02 ppm0.10 ppmNo standard0.40 ppm0.05 ppmNo standardppm = parts per million; µg/m 3 = micrograms per cubic meterNote: Annual standards are never to be exceeded. Short-term standards are not to be exceeded more than once per yearunless noted.aNot to be exceeded once per year.bTo attain this standard, the 3-year average of the fourth-highest daily maximum 8-hour average ozone concentrationsmeasured at each monitor within an area over each year must not exceed 0.075 ppm (effective May 27, 2008).cNot to be exceeded more than once per year on average over 3 years.dTo attain this standard, the 3-year average of the 98th percentile of 24-hour concentrations at each populationorientedmonitor within an area must not exceed 35 µg/m 3 .e0.25 ppm are not to be exceeded more than two times in 7 consecutive days.fTo attain this standard, the 3-year average of the 98th percentile of the daily maximum 1-hour average at eachmonitor within an area must not exceed 0.100 ppm.Source: WAC 173-470–475Transportation Conformity RegulationsKitsap County is classified as an air quality attainment area; therefore, transportation projects are not subject tostate or federal transportation conformity regulations.National Environmental Policy Act Requirement for Climate Change AnalysisOn December 7, 2009, EPA signed the Endangerment and Cause or Contribute findings for GHGs under Section202(a) of the Clean Air Act. Under the Endangerment Finding, EPA determines that the current and projectedDraft | June 2013 3-28