Category Archives: Particulate Matter

Diesel Engines in Need of an Overhaul, but not Without More Funding

By: Christina Wolfe, EDF's Ports & Transportation Analyst

Source: autos.ca

Source: autos.ca

Despite the well-known health risks from diesel emissions and the economic consequences of unhealthy air, clean air projects are often stalled because they lack money. Fortunately, funding options for transportation-related clean air initiatives are available at the national, regional, and state levels. One of the key national sources of funding has been the Diesel Emissions Reduction Act (DERA), administered through the U.S. Environmental Protection Agency (EPA). DERA provides up to $100 million each year through 2016 for reducing emissions from existing diesel engines, and recently, EPA announced that roughly $9 million is available for agencies seeking to undergo clean diesel projects.

DERA typically funds replacement, repower, and retrofit projects for diesel vehicles and equipment to improve air quality and public health by reducing hazardous air pollutants, like particulate matter and smog-forming pollutants, among others. Through the Request for Proposals, eligible applications are required to have a partnership with a local government or metropolitan planning organization, a public or private fleet of vehicles or equipment, and other interested entities (e.g., technology providers, community groups, etc.). Because of these unique partnerships, DERA has been able to make federal dollars go even further. The DERA partnership approach attracts public and private funding that, when combined with federal funds, allow for more emissions reductions. Both partners stand to gain a great deal in the way of enhancing business operations and improving local health and are eager to participate. In the end, for each federal dollar awarded, as much as $3 from non-federal sources is added to the project, and together these funds provide up to $7 – $18 in public health benefits. Read More »

Also posted in Air Pollution, Drayage, Environmental Protection Agency, Transportation | Tagged | 2 Responses, comments now closed

Soot Pollution Limits Unanimously Upheld in Court, Continuing Clean Air Victory Streak

rp_air-pollution-source-NRDC-300x187.jpgLast week, the U.S. Court of Appeals for the D.C. Circuit unanimously upheld the Environmental Protection Agency’s (EPA’s) particulate matter (soot) pollution standard, ruling that EPA’s decision to strengthen the standard in 2012 was firmly grounded in science and the law. The ruling also upheld EPA’s new requirement that states install air quality monitors near heavy traffic roads, where soot pollution levels can spike. The court’s decision is the latest in a string of legal victories for critical health protections on air pollution.

When fossil fuels are burned in an automobile or power plant, they release soot pollution, very fine, ashy particles less than one tenth the width of a human hair. These particles are so small that the air can carry them for long distances. When inhaled, soot particles penetrate deep into the lungs, where they can cross into the bloodstream via the path normally taken by inhaled oxygen. Exposure to soot pollution can inflame and alter our blood vessels, cutting off the oxygen supply to our heart and brain, leading to a heart attack, stroke, or other serious cardiac event. Read More »

Also posted in Air Pollution, Clean Air Act, Environmental Protection Agency | Tagged | 1 Response, comments now closed

One Year Later: Texas Environmental Agency Fails to Address Public Comments on Pollution in Texas City

This post was co-authored by Adrian Shelley, Air Alliance Houston Executive Director. 

rp_Estimated-Distribution-of-Benzene-Annual-Concentration-Based-on-Retrieved-Primary-Source-Location-and-Wind-Direction-Frequency-300x179.jpg

Estimated Distribution of Benzene Annual Concentration, Based on Retrieved Primary Source Location and Wind Direction Frequency

One year ago this week, EDF, along with Air Alliance Houston (AAH), submitted comments to the Texas Commission on Environmental Quality (TCEQ) regarding its proposal to remove Texas City from the state’s Air Pollutant Watch List (APWL). We believe the agency’s proposal to remove Texas City from the Watch List for benzene and hydrogen sulfide, two lethal air pollutants, was premature.

To date, the TCEQ has not addressed our public comments on the Texas City proposal, though it has found time to analyze and recommend two other areas for removal from the APWL. We believe that this reflects TCEQ’s misplaced priorities. The agency seems to prefer removing areas from the APWL — thereby lifting a burden on industry— rather than ensuring adequate protection for public health. Read More »

Also posted in Air Pollution, Environment, TCEQ, Texas Permitting | Tagged , , | Comments closed

State of the Air 2014: 19 Texas Counties Continue to Struggle with Ozone Pollution

State of the Air ALA 2014Last week, the American Lung Association (ALA) released its annual State of the Air report, which reviews air pollution data compiled by the Environmental Protection Agency (EPA) for two of the most hazardous types of air pollution: ozone and particulate matter.

Overall findings indicate that ozone pollution increased in metropolitan areas throughout the nation due to warmer temperatures. At the same time, fine particle pollution, or soot as it is most commonly called, decreased due to fewer emissions from coal-fired power plants and wider use of cleaner fuels and engines.

For a primer on ozone pollution and health, read here.

Unfortunately, Houston crept up in the rankings to 6th most polluted for ozone in the country (up from 7th last year).  And with the exception of Dallas-Fort Worth, other cities in Texas followed the national ozone trend, reporting a greater number of unhealthy days this year. Texas cities did fare better on soot pollution, although a notable exception was El Paso, which was one of only five U.S. cities that saw an increase in year-round pollution. Read More »

Also posted in Air Pollution, Dallas Fort-Worth, Environment, Ozone | Tagged | Comments closed

Air Emissions from Eagle Ford Oil and Gas Activity Expected to Quadruple over next Four Years

Well site located in Eagle Ford Shale play

Well site located in Eagle Ford Shale play

Late last week, the Alamo Area Council of Governments (AACOG) released a report outlining emission projections from oil and gas activity in the Eagle Ford Shale play, the most active drilling area in the country right now. Under the moderate drilling activity scenario, projections of air pollutants are expected to quadruple in the next four years. Even though this seems like a staggering prediction, it is likely an underestimation, given certain emissions are not accounted for in the inventory.

What does the report say?

The report assesses the emissions from oil and gas activity in the Eagle Ford Shale play and projects air pollution under three different development scenarios: low, moderate, and aggressive. Projections over the next several years indicate that we can expect substantial increases in smog-forming nitrogen oxide emissions (NOx), volatile organic compounds (VOCs), and carbon monoxide. Read More »

Also posted in Air Pollution, GHGs, Natural gas, Oil, Ozone, San Antonio, TCEQ | Tagged , , | 1 Response, comments now closed

Air Quality Report: Texas Has More Work To Do

Source: American Lung Association

Texas climbed higher among the national “worst ozone” rankings list, but most of the nation continued on a long-term trend toward much healthier air, according to the Annual State of the Air Report released this week from the American Lung Association (ALA).

The report reviewed air pollution data compiled by the Environmental Protection Agency (EPA) for two of the most hazardous types of pollution: ozone and particle pollution.

Key National Findings:

  • More than 131 million people (42 percent of the U.S. population) live in counties that have unhealthy levels of either ozone or particle pollution.
  • Los Angeles has cut one-third of its unhealthy ozone days since first the State of the Air report came out in 2000.
  • Eighteen cities had lower year-round levels of particle pollution, including 16 cities with their lowest levels recorded.

Key Texas Findings:

  • Unfortunately Houston-Baytown-Huntsville ranked 7th place among the most ozone-polluted cities in the country, and Dallas-Fort Worth made a huge leap to 8th place nationally from 13th place just two years ago. Harris County also failed with regard to annual particle pollution.
  • Fifteen Texas Counties received a grade of “F” for ozone pollution:
    • Harris County (67 orange level ozone days, 10 red)
    • Dallas County (34 orange level ozone days, 4 red)
    • Bexar County
    • Brazoria County
    • Collin County
    • Denton County
    • Galveston County
    • Gregg County
    • Hood County
    • Jefferson County
    • Johnson County
    • Montgomery County
    • Orange County
    • Rockwall County
    • Tarrant County
    • On a more positive note, Brownsville-Harlingen-Raymondville made two of the “cleanest U.S. cities” list for ozone and short-term particle pollution.
    • To find out if your Texas town is on the most polluted list, visit the ALA site.

Read More »

Also posted in Air Pollution, Environmental Protection Agency, Ozone | 2 Responses, comments now closed

Heavy Duty Hydrogen Fuel Cell Electric Hybrid Trucks Rolling Into Houston

Source: www.earthtechling.org

Thanks to funding from the Department of Energy (DOE) and some committed regional stakeholders that include  Houston Galveston Area Council (HGAC), Total Transportation Services, Inc. (TTSI), Air Products, Vision Industries, and EDF, 20 dirty, diesel powered heavy duty trucks, the ones carrying large containers, will be replaced with zero-emission TYRANO™ hydrogen fuel cell-electric trucks.  The DOE granted HGAC $3.4 million in funding to launch a zero emission engine technology demonstration project – the largest of its kind- at the Port of Houston Authority (PHA), where heavy duty trucks are projected to account for almost half of all port emissions by 2015.

Expected emission reductions from the project include 39 tons of nitrogen oxides and 0.8 tons of particulate matter per year. This award is especially timely as the Houston area is on the verge of a non-attainment designation with the newly strengthened particulate matter standard and still struggles to meet the national ambient air quality standard for ozone.  In addition to reductions of criteria air pollutants, the demo will enable the displacement of 200,000 gallons of diesel annually (equivalent to reducing 2,180 tons of CO2).

Historically speaking, the cargo transport sector has been confined to older, dirtier diesel engines. This award signifies a positive step forward in demonstrating a new technology for the freight sector. The trucks are expected to be rolled out later this year, and will be fueled with hydrogen locally sourced from natural gas feedstock.

In addition, over 80 percent of the truck components will be built and assembled right here in America.  Clean air and clean energy for a better economy makes for a triple win.

Also posted in Air Pollution, Goods Movement, Houston, Transportation | 1 Response, comments now closed

2012 Texas Air Quality: A Year In Review

As we come to the end of another year, we reflect on all that has happened in the world of Texas air quality. This year has brought new challenges and reminded us of how much remains to be done in the quest for healthier air across the state. Our work is critical to the millions of those who are especially vulnerable to the harms of air pollution.

I’d like to thank my fellow bloggers for another outstanding year in helping to highlight the air quality issues of 2012 and for the continued support of all of our readers.  We look forward to bringing you more news and views in 2013. Wishing you and your family a happy, healthy, and prosperous New Year!

The Environmental Protection Agency (EPA) released updated standards for fine particulate matter (PM2.5), often referred to as “soot” (although it actually comprises a broader array of fine particles). Fine particulate pollution in the air we breathe — some of it directly emitted from cars and trucks, some of it resulting from factories and electric power plants hundreds of miles upwind – can lodge in the lungs and cause a variety of respiratory and pulmonary disease, especially in children and seniors. EDF praised the move, which will help secure healthy air for millions of Americans, including those in Houston where existing soot levels already exceed the new limits.

The State of Texas and the Texas Commission on Environmental Quality (TCEQ) once again fight against clean air rules that will save Texans’ lives. This time, it was the first-ever standards limiting the amount of mercury and other toxics power plants could emit. The Mercury and Air Toxics Standards (MATS) will ensure that 90 percent of the mercury content in coal burned by power plants is not released into our air. TCEQ, the Texas attorney general, and others challenged the standards in court, saying that the toxic pollutants covered by the mercury standards do not "pose public health hazards.” The reality is that power plants in the U.S. are a major source of many toxics such as mercury, arsenic, chromium, acid gas, and nickel. A report EDF released last year demonstrated that Texas had an oversized share of the top mercury emitting coal plants in the U.S. in 2009. We called on TCEQ and the state of Texas to stand up to harmful pollution instead of standing in the way of public health protections.

Clean school bus programs in Texas made significant progress toward improving air quality on our state’s school buses, though much work remains to be done according to an EDF analysis: “Review of Texas’ Clean School Bus Programs: How Far Have We Come and What Is Still Left to Do?” The report highlighted the efforts of state and regional programs in administering clean bus programs, and detailed the progress made with retrofits and replacements. With momentum from successes to date, the EDF report recommended that communities, ISDs, and government officials carry on the clean school bus momentum by continuing to seek funding for these types of projects; completing existing clean school bus projects; and investing in these projects through budget and legislative funding allocations. Again, work remains to be done to protect the health of Texas children and improve the air quality in and around school buses – until all of Texas’ oldest buses are either replaced or retrofitted.

Since 2009, the Drayage Loan Program (DLP) has worked to replace older, more polluting trucks in the Houston area with newer, cleaner trucks by providing critical funding and support to local independent owner operators and drayage fleets. The innovative program, administered by the Houston-Galveston Area Council and supported by the Port of Houston Authority, Environmental Defense Fund, and numerous drayage companies and truck dealerships, combines low-interest loans and substantial grants to fund the fleet turnover. The effort led to the successful replacement of 138 drayage trucks, engaged numerous drivers and carriers, and spent nearly the entire original EPA SmartWay grant. At full implementation, the program is expected to eliminate 1,638 tons of nitrogen oxide, 26.7 tons of particulate matter, and 3,636 tons of carbon dioxide. This represented an important step toward reducing air pollution in the Houston area.

With around 45,000 shale gas wells operating in the United States – triple the number in 2005 – people are rightfully concerned about the extent of the shale boom’s potential damage to the environment. The issue became the focal point of discussion during “Can Natural Gas Be Sustainable?,” a five-person panel presentation at the second annual SXSW Eco conference in Austin. As part of the panel, we discussed how stronger standards and employing best practices could minimize impacts of increased natural gas production in the wake of growing public concern about the health and environmental impacts of drilling. EDF continues to address the key problem areas associated with natural gas development: exposure to toxic chemicals and waste products; faulty well construction and design; climate impacts from methane leakage; local and regional air pollution; and land use and community impacts.

Clean air protections were threatened with a U.S. Court of Appeals decision against EPA’s cross-state air pollution rule (CSAPR). The rule estimated to reduce power plant emissions across state boundaries, saving up to 34,000 lives each year, preventing 15,000 heart attacks and 400,000 asthma attacks, and providing $120 to $280 billion in annual health benefits for the nation. Issued under the “Good Neighbor” protections of the Clean Air Act, CSAPR would have reduced power plant sulfur dioxide emissions by 73 percent and oxides of nitrogen by 54 percent from 2005 levels across 27 eastern states and the District of Columbia. The ruling changed little about the facts on the ground in Texas. That is, cross-state air pollution from Texas will still be regulated under the – albeit somewhat weaker – Clean Air Interstate Rule (CAIR) adopted in 2005 during the Bush administration. Texas power plants must therefore comply with both the first phase of the CAIR that took effect in 2010 and the second-phase reductions that are required in 2015.

In a much-anticipated report on the management of the Port of Houston Authority (PHA), the Sunset Commission, as directed by the Texas legislature, identified several opportunities to improve aspects of port management, including accountability and stakeholder trust. The 95-page report includes a series of recommendations for improvement in a number of basic management and fiduciary areas at the port. While the report reaffirmed the Authority’s ongoing “responsibility as a government agency,” it also highlighted a pervasive “lack of accountability.” Understanding that the port is a unique institution, PHA is criticized in the report for not following a number of best practices in either the private or public sector. As EDF continues to work in partnership with PHA to reduce emissions from oceangoing vessels, trains, cargo handling equipment, and port trucks and improve Houston air quality, we were encouraged by this report’s findings and recommendations. These reforms will also make PHA stronger and better equipped to handle the inevitable diverse pressures over the next several years.

The potential health impacts to workers who daily toil in and around the hundreds of drilling sites were highlighted in a National Institute for Occupational Safety and Health (NIOSH) Hazard Alert, identifying exposure to airborne silica as a health hazard to workers conducting hydraulic fracturing operations during recent field studies. NIOSH is working to identify other potential health risks at drilling sites, acknowledging that there is a real lack of information on occupational dust and chemical exposures in this industry. However, silica is just one of several chemicals used during the hydraulic fracturing process that can pose hazards at well sites, according to State Impact.

Thanks to a federal appeals court decision, EPA’s health-based air quality standards for sulfur dioxide (SO2) will stand firm. These National Ambient Air Quality Standards (NAAQS) for SO2 will improve health protections, especially for children, the elderly and individuals with asthma. EDF Attorney Peter Zalzal praised the decision saying it “strongly affirms that EPA’s clean air protections addressing dangerous sulfur dioxide are firmly grounded in science and the law.”

The annual Texas smog season – April through October – appeared in full swing this year with numerous counties around the state exceeding health-based ozone concentrations many times since March. Ozone-forming pollution is emitted by cars, refineries and various industrial plants.  As more Texans began to see shale gas drilling rigs pop up around them, many asked the question: Could emissions from natural gas and oil operations significantly contribute to ground-level ozone? The answer was an unequivocal yes.

The U.S. Court of Appeals for the D.C. Circuit issued a unanimous opinion affirming EPA’s protective carbon pollution standards issued under the Clean Air Act.  The Court upheld EPA’s science-based finding that greenhouse gas emissions endanger public health and welfare and the Clean Car Standards. The court also dismissed petitions challenging the requirement for large industrial sources to install modern cost-effective solutions to address greenhouse gases and EPA's common sense approach to inoculate small sources. Today’s ruling underscored what we have long known — that EPA’s climate protections are firmly grounded in science and law and will help secure a healthier, more prosperous future for all Americans.

Though the cancer risks from exposure to diesel emissions have been known for many years, the International Agency for Research on Cancer (IARC), a part of the World Health Organization (WHO), officially announced that diesel emissions were carcinogenic to humans. The agency cited the robust body of scientific literature on the issue and stated that diesel emissions were associated with lung cancer and bladder cancer. WHO estimates that cancer kills 7.6 million people worldwide, and is the leading cause of death globally in 2008. Of all cancers, lung cancer is the most lethal, and accounted for 18 percent of all cancer deaths, the agency said.

EPA released a new online tool which provides data about pollution emissions for the country’s largest industrial emitters of greenhouse gases. Together, these industry sources are responsible for billions of tons of climate disrupting pollution. This will be the first time that this data is publicly available and will inform Americans about the heat-trapping greenhouse gases emitted in their communities. EDF attorney Peter Zalzal summed up our enthusiasm for this new tool: “Americans have a right to know about the pollution in their air. This greenhouse gas emissions data promotes transparency and provides a strong foundation for Americans to work together in deploying smart climate policies.”

Also posted in Air Pollution, Clean Air Act, Clean school buses, Environmental Protection Agency, Houston, Natural gas, Ports, TCEQ | Comments closed

Houston Exceeds Health Standards For Particulate Matter: More Work Ahead

Texans can breathe a bit easier now.

The Environmental Protection Agency today released updated standards for fine particulate matter (PM2.5), often referred to as “soot” (although it actually comprises a broader array of fine particles).  Fine particulate pollution in the air we breathe — some of it directly emitted from cars and trucks, some of it resulting from factories and electric power plants hundreds of miles upwind – can lodge in the lungs and cause a variety of respiratory and pulmonary disease, especially in children and seniors.

EDF praised the move, which will help secure healthy air for millions of Americans, including those in Houston where existing soot levels already exceed the new limits.

The Houston Chronicle writes that the new standards could “require cleaner operations along the Ship Channel” and slow expansion for some industrial operations.

The new annual standard will be 12 micrograms per cubic matter, helping to protect those especially vulnerable to air pollution, including the one in 11 U.S. children with asthma. Soot is one of the deadliest types of air pollution. It can cause heart attacks, asthma attacks, and even premature death. Recent studies have found a possible association with autism as well.

While the new standard was released today, Houston will have some time to implement pollution control measures in advance of a non-attainment designation, which, if to happen, would likely be in late 2014.

Thus, the region has an opportunity to take action now. EDF is working to reduce emissions for areas near the Port of Houston, where particulate matter concentrations are the highest in the region. Recommendations that we’ve made to the port include paving of industrial park east and use of shorepower for ships that call on the port, especially the new cruise lines that plan to call on the port. We’ve also called upon the port to establish more rigorous pollution controls across all sectors of operations as part of their Clean Air Strategy Plan. Stay tuned for more updates on our efforts to work with the port and regional stakeholders to reduce harmful fine particles.

Other leading health and environmental groups issued strong support of the new standards today:

  • A letter signed by over 650 health and medical professionals stated: Fine particulate air pollution is cutting short the lives of tens of thousands of Americans each year. Studies have shown fine particulate air pollution is shortening lives by up to six months… Numerous, long-term multi-city studies have shown clear evidence of premature death, cardiovascular and respiratory harm as well as reproductive and developmental harm at contemporary concentrations far below the level of the current standard. Infants, children and teenagers are especially sensitive, as are the elderly, and people with cardiovascular disease, lung disease, or diabetes. The new EPA standards should be set at levels that will protect these sensitive people with an adequate margin of safety, as required by the Clean Air Act.
  • Union of Concerned Scientists: It is encouraging to see the agency following the Clean Air Act, especially in the face of strong industry pressure to ignore science again. The law is clear: the Clean Air Act requires air pollution standards to be based solely on the best available science regarding what is protective of health. Other factors, such as costs, can be considered when the standards are implemented. But it is science that should determine what level of pollution is safe for humans.
  • American Lung Association: We know clearly that particle pollution is harmful at levels well below those previously deemed to be safe. Particle pollution causes premature deaths and illness, threatening the millions of Americans who breathe high levels of it," explained Norman H. Edelman, MD, chief medical officer for the American Lung Association. "By setting a more protective standard, the EPA is stating that we as a nation must protect the health of the public by cleaning up even more of this lethal pollutant. Reducing particle pollution will prevent heart attacks and asthma attacks, and will keep children out of the emergency room and hospitals. It will save lives."
  • Natural Resources Defense Council: From President Frances Beinecke: The Clean Air Act grants Americans the right to clean air. The updated soot standards help deliver that. Now the administration should build on this success and issue carbon limits. Together, these safeguards would protect the health and well-being of millions of Americans.
  • Dr. Christopher Lillis, doctor of internal medicine and board member of Doctors for America: As a health professional, I commend the Environmental Protection Agency for finalizing an important rule that will result in innumerable benefits to public health. I have seen countless patients with emphysema and asthma whose health conditions have worsened due to soot pollution in our atmosphere. Reducing soot pollution also reduces tens of thousands of heart attacks. Today’s announcement is a breath of fresh air for doctors, asthma patients, and their loved ones.
  • Sierra Club: From Executive Director Michael Brune: The Sierra Club applauds the Environmental Protection Agency for issuing these life-saving clean air standards to protect Americans from life-threatening air pollution. Pollution kills – and it also costs Americans billions of dollars each year.  The EPA’s soot safeguards will keep dangerous metals and chemicals out of the air we breathe to save thousands of lives and billions of dollars.

Also posted in Air Pollution, Environmental Protection Agency, Houston | 3 Responses, comments now closed

Time Is Running Out To Set Stronger Limits On Soot Pollution

Credit: Mom's Clean Air Force

This blog post was written by Molly Rauch, and it originally appeared on the Mom's Clean Air Force blog.

On December 14, the Environmental Protection Agency is scheduled to release a final standard for allowable levels of soot in ambient outdoor air. Moms Clean Air Force supporters have been speaking up since the proposed standard was released for public comment back in June, urging the agency to finalize a strong standard that will adequately protect children from the microscopic particles that lodge deep in the lungs and cause a myriad of health problems. These particles originate where fossil fuels are burned, such as in cars, trucks, and power plants.

I’ve written before about some of the ways soot affects children. But as we near December 14, I feel compelled to add even more reasons for you to help us keep the pressure on EPA.

  • Soot exposure specifically harms babies, by causing premature birth and low birth weight. Fetuses exposed to more soot are born smaller and earlier compared to fetuses exposed to less. The evidence for these adverse reproductive health effects is strong and growing stronger. A 2011 systematic review of the scientific literature examined 41 published studies on the topic and found that PM2.5 exposure was consistently associated with low birth weight, preterm birth, and small-for-gestational-age births. So, soot gets inside pregnant women’s bodies and harms our babies before they are even born. No consumer gizmo can solve this problem; no high tech HEPA-filter vacuum will fix this; no special mask to wear while behind the wheel will take this away. This is a job for big government, in the best sense of the term. EPA needs to take strong action against these invisible particles harming our future.
  • Lest you think that such effects on newborn babies don’t sound like a big deal, premature birth and low birth weight are linked to some serious health consequences. Low birth weight is a potent predictor of infant mortality as well as subsequent illnesses in infancy and childhood, such as cerebral palsy, deafness, blindness, lung disease, asthma, and cognitive development. Similarly, preterm birth is associated with infant mortality and health problems in childhood and adulthood. But the harm doesn’t stop in childhood. A growing body of evidence suggests that low birth weight and preterm birth predict several important aspects of health well beyond childhoodFor example, low birth weight is associated with heart disease, heart attacks, and Type 2 diabetes among adults. It is unknown whether the low birth weight caused by soot is the same low birth weight that increases diabetes risk. But in a country like ours, where 12% of all live births are preterm and 8% of babies are low birth weight, and where these adverse birth outcomes disproportionately affect poor and non-white babies, I don’t need to wait for definitive scientific proof. Let’s take reasonable measures to continue to reduce soot exposure. We know it will improve the health of our population right now. And it just might have the added benefit of protecting infants from future chronic health problems like heart disease and diabetes. Win-win, right?
  • Soot exposure from traffic pollution is hardest on poor and minority communities. Here’s why: Traffic emissions are one of the largest sources of soot pollution in cities, and the concentration of traffic pollutants is highest near roadways. Heavily trafficked roads are basically corridors of pollution in many cities, and these are the same areas where you’ll find higher density of residences, schools, stores, and workplaces. (According to EPA, more than 45 million Americans live within 300 feet of a highway.) African Americans and low-income neighborhoods are closer to major roadways, and so they bear the brunt of this pollution. Can you say “vicious cycle”? The new soot standard will require cities to measure soot pollution near roads. There won’t be a simple fix for this kind of injustice, but taking some measurements to get a handle on the problem is a key first step. Bravo to EPA for including near-road monitors in the draft soot standard. Let’s make sure we’ll be reading about near-road monitors on December 14, when we see the final standard.
  • Limiting soot pollution helps avert climate chaos, ensuring a healthier future for our children, our children’s children, and beyond. Black carbon, the main component of soot, is a significant climate forcer. This means that it absorbs sunlight, increasing the heat-trapping qualities of our atmosphere and raising temperatures. An important quality of black carbon is its short lifespan. It stays in the atmosphere for 1-4 weeks as opposed to centuries, as is the case with carbon dioxide. This means that reductions in emissions of black carbon would have immediate climate benefits. Less soot means less asthma and stroke and heart disease – but it also means less black carbon, and therefore less climate change, which is no small threat to our health. Air pollution and climate chaos go hand in hand. Improving one helps the other.

Also posted in Air Pollution, Environmental Protection Agency, GHGs | Comments closed
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