Table 5.1‐2 . Air Quality Trends for the San Francisco Bay Area Air Basin from 2000‐2012
Pollutant Time
CAAQS Standard
NAAQS |
|
|
|
|
|
|
|
|
|
|
Standard |
2000 |
2001 |
2002 |
2003 |
2004 |
2005 |
2006 |
2007 |
2008 |
200 |
Ozone
PM10
8‐Hour 0.070 ppm
0.070 ppm 0.087 0.082 0.082 0.086 0.084 0.078 0.080 0.077 0.081 0.07
1‐Hour 0.09 ppm N / A 0.139 0.126 0.124 0.123 0.123 0.113 0.118 0.120 0.121 0.12
Annual Mean
20 µ g / m 3 N / A 27.7 29.6 26.3 24.7 25.9 24.1 35 25.6 24.1 20.3
24‐Hour 50 µ g / m 3 150 µ g / m 3 80 113.9 83.5 59.5 65.0 80.8 106.3 77.8 77.0 55.4
PM2.5
Annual Mean
12 µ g / m 3 12 µ g / m 3 13.6 12.8 14 11.7 11.6 11.8 10.8 10.7 11.5 10.1
24‐Hour N / A 35 µ g / m 3 N / A 71 63 47 45 39 39 38 36 36 Source : San Francisco Bay Area Air Basin Almanac 2013 Notes : ppm = parts per million , µ g / m3 = micrograms per cubic meter , N / A = not applicable
Travis AFB ’ s primary air emissions are from mobile sources such as aircraft and vehicles . Currently the Base meets all emissions regulations and is not classified as a major source of hazardous air pollutants .
If the nonattainment status for PM2.5 or ozone increased to severe , or if the EPA increases NAAQS standards , then Travis AFB would possibly need a Title V operating permit . Operating under a Title V permit requires recording and reporting air emissions , which can include daily , weekly , or hourly monitoring of emissions . Additionally , operating under a Title V operating permit involves offsetting emissions at a 1.15 to 1.0 ratio , i . e ., for every one‐ton increase in emissions Travis AFB would need to create an offset equivalent to 1.15 tons . These requirements for environmental compliance could result in the need of new equipment and technologies to reduce emissions , impacting costs at Travis AFB and possibly impacting operations , including flying time , associated with air emissions contributing to ozone formation . As part of the San Francisco Bay Area Air Basin , Travis AFB must rely on regional cooperation to achieve attainment .
Because the current air quality levels are well b status , this is an issue requiring awareness and currently not a significant issue .
Source : http :// www . arb . ca . gov /, http :// www . baaqm of Emissions and Air Quality ‐ 2013 Edition , Travis AF
Findings
• The state is working with local governme Air Basin to bring the region into attainm nonattainment standard for ozone or PM may need to obtain a higher‐level operat
• Operating under a higher‐level permit wo on emissions , offsetting efforts , and incre
Travis AFB currently holds a Synthetic Mi does not require additional regulations .
TSS Background Report