General Plan Update - City of Inglewood

Chapter 5 Environmental Resources
Table 5.6-1
Summary of Ambient Air Quality Data
Year
Air Pollutants 2003 2004 2005
Sulfur Dioxide (SO2)
Maximum 24-hour concentration
measured
Number of days exceeding state
0.04 ppm 24-hour standard
Particulate Matter (PM10)
Maximum 24-hour concentration
measured
Number of days exceeding national
150 µg/m 3 24-hour standard
Number of days exceeding state 50
µg/m 3 24-hour standard
0.006 ppm 0.007 ppm 0.011 ppm
0 0 0
58 µg/m 3 c 52 µg/m 3 N/A d
0 0 N/A
3 2 N/A
Particulate Matter (PM2.5)
Maximum 24-hour concentration
measured
55 µg/m 3 56 µg/m 3 N/A
Number of days exceeding national
65 µg/m 3 24-hour standard
0 0 N/A
SOURCE: South Coast Air Quality Management District, 2006
a ppm = parts by volume per million of air
b Neither the California Air Resources Board nor the South Coast Air Quality Management District collect carbon
monoxide data for the one-hour period.
c µg/m 3 = micrograms per cubic meter
d N/A = not available
The ARB also collects emissions data and compiles them into inventories by county.
These annual emission inventories show which sources are the biggest emission
contributors and assist in air quality planning activities. A summary of the most recent
annual emission inventory for Los Angeles County is shown in Table 5.6-2. Mobile
sources account for the majority of criteria pollutant emissions in the County with the
exception of PM 10 . In the City of Inglewood, emissions of criteria pollutants would follow
the same general pattern as the rest of Los Angeles County with the emission inventory
being dominated by area and mobile sources. Emissions generated within the jurisdiction
of City of Inglewood would be only a small portion of the County’s overall emission
inventory.
Table 5.6-2
2004 Estimated Annual Emissions Summary for Los Angeles
County (tons/day)
Source Category VOC CO NOX PM10 SOX
Stationary Sources 95 69 49 15 24
Area-Wide Sources 107 84 20 139