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HARBOR BLVD. MIXED USE TRANSIT CORRIDOR PLAN FINAL FIR
<br />CITY OF SANTA ANA
<br />5. Environmental Analysis
<br />AIR QUALITY
<br />Table 5.2 -1 Ambient Air Quality Standards for Criteria Pollutants
<br />Source: CARIB 2013b.
<br />Notes: ppm: parts per million; fig/ml: micrograms per cubic meter
<br />* Standard has not been established for this pollutant/duration by this entity.
<br />' When relative humidity is less than 70 percent.
<br />2 On June 2, 2010, a new 1 -hour SOz standard was established and the existing 24 -hour and annual primary standards were revoked. The 1971 SO,
<br />national standards (24 -hour and annual) remain in effect until one year after an area is designated for the 2010 standard, except that in areas
<br />designated nonattainment for the 1971 standards, the 1971 standards remain in effect until implementation plans to attain or maintain the 2010
<br />standards are approved.
<br />3 On December 14, 2012, EPA lowered the federal primary PMzs annual standard from 15.0 pg/ms to 12.0 pg/m'. EPA made no changes to the
<br />primary 24 -hour PMzs standard or to the secondary PMzs standards.
<br />Air Quality Management Planning
<br />SCAQMD is responsible for prepazing the air quality management plan (AQMP) for the SoCAB in
<br />coordination with the Southern California Association of Governments (SCAG). Since 1979, a number of
<br />AQMPs have been prepared.
<br />2012 AQMP
<br />On December 7, 2012, SCAQMD adopted the 2012 AQMP, which employs the most up -to -date science and
<br />analytical tools and incorporates a comprehensive strategy aimed at controlling pollution from all sources,
<br />including stationary sources, on road and off road mobile sources, and area sources. It also addresses several
<br />state and federal planning requirements, incorporating new scientific information, primarily in the form of
<br />updated emissions inventories, ambient measurements, and new meteorological an quality models. The 2012
<br />AQMP builds upon the approach identified in the 2007 AQMP for attainment of federal PM and ozone
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<br />California
<br />Federal Primary
<br />Pollutant
<br />Averaging Time
<br />Standard
<br />Standard
<br />Major Pollutant Sources
<br />Visibility- Reducing
<br />Visibility- reducing particles consist of suspended
<br />Particles
<br />particulate matter, which is a complex mixture of
<br />ExCo = 0.23/km
<br />tiny particles that consists of dry solid fragments,
<br />8 hours
<br />visibility of 10?
<br />No Federal
<br />solid cores with liquid coatings, and small droplets
<br />miles'
<br />Standard
<br />of liquid. These particles vary greatly in shape, size
<br />and chemical composition, and can be made up of
<br />many different materials such as metals, soot, soil,
<br />dust, and salt.
<br />Hydrogen Sulfide
<br />Hydrogen sulfide (H2S) is a colorless gas with the
<br />odor of rotten eggs. It is formed during bacterial
<br />1 hour
<br />0.03 ppm
<br />No Federal
<br />decomposition of sulfur-containing organic
<br />Standard
<br />substances. Also, it can be present in sewer gas
<br />and some natural gas, and can be emitted as the
<br />result of geothermal energy exploitaton.
<br />Vinyl Chloride
<br />Vinyl chloride (chloroethene), a chlornated
<br />hydrocarbon, is a colorless gas with a mild, sweet
<br />No Federal
<br />odor. Most vinyl chloride is used to make polyvinyl
<br />24 hour
<br />0.01 ppm
<br />Standard
<br />chloude (PVC) plastic and vinyl products. Vinyl
<br />chloude has been detected near landfills, sewage
<br />plants, and hazardous waste sites, due to microbial
<br />breakdown of chlorinated solvents.
<br />Source: CARIB 2013b.
<br />Notes: ppm: parts per million; fig/ml: micrograms per cubic meter
<br />* Standard has not been established for this pollutant/duration by this entity.
<br />' When relative humidity is less than 70 percent.
<br />2 On June 2, 2010, a new 1 -hour SOz standard was established and the existing 24 -hour and annual primary standards were revoked. The 1971 SO,
<br />national standards (24 -hour and annual) remain in effect until one year after an area is designated for the 2010 standard, except that in areas
<br />designated nonattainment for the 1971 standards, the 1971 standards remain in effect until implementation plans to attain or maintain the 2010
<br />standards are approved.
<br />3 On December 14, 2012, EPA lowered the federal primary PMzs annual standard from 15.0 pg/ms to 12.0 pg/m'. EPA made no changes to the
<br />primary 24 -hour PMzs standard or to the secondary PMzs standards.
<br />Air Quality Management Planning
<br />SCAQMD is responsible for prepazing the air quality management plan (AQMP) for the SoCAB in
<br />coordination with the Southern California Association of Governments (SCAG). Since 1979, a number of
<br />AQMPs have been prepared.
<br />2012 AQMP
<br />On December 7, 2012, SCAQMD adopted the 2012 AQMP, which employs the most up -to -date science and
<br />analytical tools and incorporates a comprehensive strategy aimed at controlling pollution from all sources,
<br />including stationary sources, on road and off road mobile sources, and area sources. It also addresses several
<br />state and federal planning requirements, incorporating new scientific information, primarily in the form of
<br />updated emissions inventories, ambient measurements, and new meteorological an quality models. The 2012
<br />AQMP builds upon the approach identified in the 2007 AQMP for attainment of federal PM and ozone
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