Antelope Valley

Antelope Valley Air Quality Management District (AVAQMD)

California’s ambient air quality standards classified Antelope Valley as nonattainment for ozone and PM10. Based on EPA standards, Antelope Valley is attainment for ozone.

ERCs are available for five different pollutants:


Pollutant Significant Emission Rates
Nitrogen oxides (NOx) >10 tons/year
Volatiole organic compounds (VOC) >10 tons/year
Sulfur oxides (SOx) >27 tons/year
Carbon monoxide (CO) >100 tons/year
PM10 >15 tons/year
PM2.5 >15 tons/year

To satisfy offset requirements, new or modified major facilities in nonattainment areas must obtain ERCs to satisfy the offset ratio requirements for proposed emission increases.  The offset ratio for a nonattainment area for ozone is 1.3. That means if 100 tpy of NOx or ROCs are emitted from a proposed new or modified major facility in the area classified as nonattainment for ozone, the facility must obtain 130 tpy of ERCs to offset the increase in NOx or ROC emissions. Offsets for PM10 shall be provided at a tradeoff ratio of 1.0.