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5.1 AIR QUALITY <br /> TABLE 5.1-6 <br /> Sulfur Dioxide Levels at Bethel Island, 1998-2007(parts per million) <br /> 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 <br /> Highest 1-Hour Average 0.028 0.029 0.018 0.015 0.029 0.016 0.015 0.017 0.017 0.018 <br /> Highest 24-hour Average 0.009 0.008 0.007 0.007 0.009 0.006 0.006 0.006 0.007 0.005 <br /> Annual Average 0.002 0.002 0.002 0.002 0.003 0.002 0.002 0.002 0.002 0.002 <br /> Number of Exceedances: <br /> Federal Standard <br /> (0.14 ppm, 24-hour)(days) 0 0 0 0 0 0 0 0 0 0 <br /> (0.03 ppm, annual)(years) 0 0 0 0 0 0 0 0 0 0 <br /> Source:AIRData, EPA <br /> 0.16 <br /> 0.14 <br /> 0.12 <br /> c <br /> 0.1 <br /> ♦ Max 24-Hour Concentration <br /> E 3-Year Average <br /> L <br /> N - - California Standard <br /> Q 0.08 — Federal Standard <br /> N <br /> w <br /> L <br /> Q <br /> N 0.06 <br /> O <br /> 0.04 <br /> 0.02 <br /> 0 <br /> 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 <br /> Calendar Year <br /> FIGURE 5.1-7 <br /> Maximum 24-hour Average S02 Level: Bethel Island Road: 1997-2007 <br /> 5.1-14 SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC) <br />