Sprol

For the third year in a row, Bakersfield, California ranks as the nation’s second smoggiest city in America. Coming in just behind Los Angeles, Bakersfield is also the second most ozone-polluted cities.

But, that’s not all. Bakersfield has now moved into first place as the city with the most fine particulate pollution. According to an annual American Lung Association (ALA) report, which ranks America’s cities with the unhealthiest air, Bakersfield was third behind Pittsburgh and Los Angeles last year.

The ALA reports that, while America’s air has gotten somewhat better over the last 10 years, many cities still suffer from severe air pollution problems. In fact, despite progress in cutting air pollutants and a booming “green” movement, almost every major metropolitan area is fraught with considerable air pollution.

The ALA rates cities on three primary criteria: ozone, short-term particle spikes and long-term particle averages. Each group of ratings is based on statistics collected from the years 2005 through 2007 at monitoring stations maintained by the United States Environmental Protection Agency (EPA). Los Angeles, Fresno and Bakersfield, all in California, had the dubious distinction of being on the top 10 list of all three categories.

Air pollution has become a major threat to human health. This is especially evident when you consider that roughly 60 percent of Americans are currently breathing air dirty enough to send people to emergency rooms across the country, to shape how children’s lungs develop and to kill through the development of serious respiratory illnesses.

The ALA’s annual report states that of the 25 cities with the worst ozone pollution problems, 16 recorded higher ozone levels when compared with last year. A dozen of the 25 cities with the worst average particle problems, which include microscopic soot, diesel exhaust, various chemicals, metals and aerosols, experienced a spike in these pollutants.

Another four cities showed no change and, thankfully, nine cities actually showed some improvement. And, of the 25 worst, 13 cities recorded more days of severe spikes in particle pollution than they had last year.

But, what contributes to the pollution problems in these 25 cities with the worst air pollution? Let’s look at Bakersfield.

It has been over a decade since the first reports of the growing air pollution that is still threatening the United State’s most diverse and productive farm counties in California’s Central Valley. The reasons for the advances in air pollution are manifold and include mist from fertilizers and pesticides and dust from tractors that help grow half of our nation’s produce.



Bakersfield photo: A Polluted Sunset by andy castro, via Creative Commons

However, other factors also contribute to the rising air pollution. The meteorological conditions and topography of the region only make matters worse, and they also make the problem very difficult to solve.

Bakersfield is boxed in on three sides by mountains. Inversion layers, which act as a lid on the air and hold the pollution close to the ground, are present in both winter and summer. There is little or no wind to take the pollution elsewhere, so it just sits over the city.

Bakersfield’s Kern County also ranks as the worst county in average annual particulate pollution. However, some efforts to reduce the toxic air pollution have been made.

According to the San Joaquin Valley Air Pollution Control District, the county has been able to reduce stationary sources of pollution by 80 percent since 1980. This has been accomplished through various measures, including regulations on oil processing and, in 2003, restrictions on wood-fueled fires. Additional farming regulations, which reduce the number of harvesting machines as well as the number of trips made through the fields, have also helped.

Despite these accomplishments, county officials now say they need state and federal assistance in controlling the heavy-duty trucks that pass through on Interstate 5 and Highway 99. These semi-trucks, cut east to west hauling produce from farms to packaging facilities, fall outside the county’s regulatory authority.

To date, air pollution controls have cost Kern County businesses approximately $40 billion. This $40 billion is split between to important plans – one aimed at reducing particulate matter by 2015 and another plan aimed at reducing ozone by 2023.

However, the financial cost of noncompliance with federal pollution standards may be much more. Being out of compliance with federal Environment Protection Agency standards costs Kern County $2 billion in forfeited federal highway funding and puts a dent in its ability to attract more businesses to the area.

There are other intangible costs that are just as important as the strictly financial costs. The ALA emphasizes the poor and deteriorating lung capacities of the young people who are growing up in such dirty, polluted environments. A University of California Fullerton Study estimated the economic cost of not meeting EPA air standards for the southern California region, which includes all of Los Angeles, at $6 billion per year in health-related costs as well as premature deaths.

So, while it does require huge amounts of money to clean up the air, massive amounts of money are already being paid out for the declining health of young people, increased medication usage, and shortened lives. The ALA is working with local governments and promoting partnerships between the county, state and federal authorities, but much more needs to be done.

This year, 12 more California counties received failing grades than did last year in terms of air quality. This reflects, in part, the tighter national ozone standards adopted in 2008. The ALA’s State of the Air 2009 Report also found that six out of every 10 Americans live in areas where pollution levels actually endanger their lives.

This means that despite an ever-growing “green” movement that is sweeping across the United States, the ALA’s report indicates that the air in many American cities became even dirtier since last year’s report.

THE REAL COST

There is now data and research that indicates that ozone is more destructive than originally believed. Because of this, in March 2008, the EPA lowered the standard needed for ozone levels to trigger an unhealthy rating.

Ozone, the gas that forms a major component of smog, is created by tailpipe emissions that are cooked by the sun, heat up and form triple molecules of oxygen. These molecules are much less stable than conventional oxygen and are much more damaging to our respiratory systems.

Respiratory problems are a very natural and scientifically established result of air pollution. Polluting particles in the air can especially cause health problems in children, the elderly and the infirm. Additionally, air pollution can aggravate asthma symptoms and worsen allergies.

However, respiratory problems are not the only health issues that can be brought on or aggravated by breathing polluted air. If the pollution is heavy enough and if a person is chronically exposed to the polluted air, serious health problems, including cancer and heart disease, can result from the toxins constantly breathed in through the air.

Look at Los Angeles, which has a lethal combination of heavy traffic, sunshine and heat. Last year, the city had 195 days where the ozone levels were high enough to be unhealthy for sensitive members of the population. On another 55 days, the ozone level was unhealthy for everyone, and on 11 days, the ozone in the air was rated “very unhealthy.”

Particle emission pollution is generated primarily by diesel engines, coal-fired power plants and the burning of wood and other combustible fuels. For California’s coastal cities, much of their pollutants come from ships coming into port. In fact, sea-fairing vessels contribute significantly to both particle and ozone emission air pollution.

Whatever the source, some states are taking very aggressive action in an attempt to combat the problem of air pollution. New York and Washington have been successful in reducing air pollution drastically over the past 10 years, and California is introducing cleaner diesel fuel for everything from semi-trucks to large ships.

There has been some criticism of the ALA’s air quality report because the findings are based on where the EPA monitoring stations are located. In Pittsburgh, for example, one monitoring station sits close to the largest coke plant in the United States. Coke is an important ingredient in the steel manufacturing process and is made by baking coal, which produces large amounts of ash and other toxic particles.

It is not a surprise then that Pittsburgh had the highest recorded number of particle pollution spikes, which are jumps in the number of particles in the air that can last for many hours or even days.

However, it is important to note that the findings are supposed to capture the worst cases of air pollution for each metropolitan area because that is what will have the most negative impact on a population’s health. So, it is actually appropriate to locate monitoring stations where the air pollution problems are most acute and potentially damaging.

While air pollution is a chronic problem across the United States, there are still some places where a taking a fresh breath is just that…a fresh breath.

The healthiest cities list mostly consists of cities in the vast-open spaces of the nation’s heartland. These areas are typically far from heavy industry and massive traffic jams. Cheyenne, Wyoming has the lowest long-term particle average, followed closely by Santa Fe, Honolulu and Great Falls, Montana.

The lowest, in fact almost non-existent, ozone levels were discovered in Billings, Montana, Carson City, Nevada and Fargo, North Dakota. Interestingly, only two eastern cities were on any of the three least-polluted lists. Portland, Maine had among the lowest spikes in particle emissions, and Port St. Lucie, Florida had among the lowest ozone levels.

However, the fact remains, many of us are still not breathing clean air. According to the ALA, six out of every 10 Americans, or 186 million people, currently live in communities where the air they breathe endangers their lives. As a nation, we obviously still have a long way to go.