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5.1 AIR QUALITY <br /> TABLE 5.1-5 <br /> Carbon Monoxide Levels at Stockton-Hazelton,Stockton, 1998-2007,(parts per million) <br /> 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 <br /> Highest 8-hour average 7.2 5.3 3.9 6.0 3.2 3.1 2.5 2.9 2.3 2.3 <br /> Highest 1-hour average 8.9 8.3 6.5 8.4 6.0 5.8 3.7 4.3 4.4 3.6 <br /> Number of days exceeding: <br /> State Standard (20 ppm, 1-hr) 0 0 0 0 0 0 0 0 0 0 <br /> State Standard (9.0 ppm, 8-hr) 0 0 0 0 0 0 0 0 0 0 <br /> Federal Standard (35 ppm, 1-hr) 0 0 0 0 0 0 0 0 0 0 <br /> Federal Standard (9 ppm, 8-hr) 0 0 0 0 0 0 0 0 0 0 <br /> Source: California Air Quality Data,Annual Summary, California Air Resources Board, and AIRData, EPA <br /> 25.0 <br /> 20.0 - - - - - <br /> c <br /> O <br /> 15.0 ♦ Max Hourly Concentration <br /> E3-Year Average <br /> d <br /> rL - California Standard <br /> U) <br /> Q- 10.0 <br /> O <br /> U ♦ <br /> 5.0 <br /> 0.0 <br /> 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 <br /> Calendar Year <br /> FIGURE 5.1-5 <br /> Maximum 1-hour Average CO Level:Stockton-Hazelton: 1997-2007 <br /> 5.1-12 SAC/371322/082410013(LEC_5.1_AIR_QUALITY.DOC) <br />