Sentences with phrase «sulfur dioxide levels»

That sulfur dioxide market, run by the U.S. Environmental Protection Agency (EPA), has reduced sulfur dioxide levels by 40 percent since 1992 by allowing companies to buy and sell the right to emit the acid - rain forming pollution from coal - burning plants, which has increased the acidity of lake waters throughout the region.

The group posts daily updates on sulfur dioxide levels.

Within 24 hours of the blackout, sulfur dioxide levels dropped by 90 percent, and ozone declined by 50 percent.

That sulfur dioxide market, run by the U.S. Environmental Protection Agency (EPA), has reduced sulfur dioxide levels by 40 percent since 1992 by allowing companies to buy and sell the right to emit the acid - rain forming pollution from coal - burning plants, which has increased the acidity of lake waters throughout the region.

Not exact matches

While U.S. power plants have limits on other air - born pollutants — like nitrogen and sulfur oxides that cause acid rain — there haven't been limits, until now, on the levels of carbon dioxide emissions that power plants can emit.

In the transition period the conditions for exporting organic wine to the US are the same laid down in the US organic regulation: «Organic», when no sulfur dioxide is added; «Made with organic grapes», if sulfur dioxide is added, with a maximum level present in the finished product of 100 parts per million.

As is common around the country, New York State's Department of Environmental Conservation routinely monitors the levels of ozone, carbon monoxide, sulfur dioxide, nitrogen oxides, and particulates in the air.

Toward the end of that year, though, the Pioneer Venus probe entered Venusian orbit — and immediately recorded suspiciously high levels of sulfur dioxide above the clouds.

Using spectral readings from telescopes at the Keck Observatory in Hawaii, Hand has found high levels of oxidative chemicals such as sulfate, oxygen, sulfur dioxide and hydrogen peroxide on Europa's surface, which are produced as ionizing radiation from Jupiter scours it, splitting apart water molecules and sulfur compounds in the uppermost layers of its ice.

Broad, flat volcanoes likely dispelled significant volumes of lava, ashes and gas, while pushing sulfur dioxide, carbon dioxide and methane to dangerous levels in the environment.

Ground - level ozone, sulfur dioxide, nitrogen dioxide carbon monoxide are especially harmful for senior citizens, children, and people with heart and lung conditions such as emphysema, bronchitis, and asthma.

Moreover, unlike sulfur dioxide, a volcanic gas that stands out against trace background levels, the atmosphere contains higher background levels of CO2, and winds disperse any injection quickly.

According to data from the U.S. Environmental Protection Agency (EPA), levels of all major air pollution contaminants (ozone, nitrogen oxides, carbon monoxide, sulfur dioxide, particulate matter and lead) are down significantly since 1970; carbon monoxide levels alone dropped by more than 70 percent.

While this number is higher than the previous estimate made in the late 1990s based on ground measurements, the new research includes data on more volcanoes, including some that scientists have never visited, and it is still lower than human emissions of sulfur dioxide pollution levels.

Volcanoes provide natural background levels of sulfur dioxide that need to be taken into account when studying the global atmosphere and regional effects.

Such hazes are created when water vapor is lifted by an unknown process with sulfur dioxide from lower levels into the planet» upper atmosphere, where it is broken down by sunlight into molecules that recombine into volatile sulfuric acid.

For the past ten years the plant has been operating without the level of emissions controls to limit sulfur dioxide and nitrogen oxide emissions as stipulated in the Clean Air Act.

Each displays the average sulfur dioxide content of the atmosphere over three years, with the brightest red showing the worst pollution levels.

According to the Chinese Centre for Disease Control and Prevention, the burning of coal is responsible for 70 percent of the emissions of soot that clouds out the sun in so much of China; 85 percent of sulfur dioxide, which causes acid rain and smog; and 67 percent of nitrogen oxide, a precursor to harmful ground level ozone.

In 2005, George W. Bush's EPA issued the Clean Air Interstate Rule, aimed at achieving the largest reduction in air pollution in more than a decade, including reducing sulfur dioxide emissions by a further 70 percent from their 2003 levels.

(Sec. 340) Requires the EPA Administrator to report to Congress on an analysis of the effects of different carbon dioxide reduction strategies and technologies on the emissions of mercury, sulfur dioxide, and nitrogen oxide, which cause acid rain, particulate matter, ground level ozone, mercury contamination, and other environmental problems.

Not later than 18 months after the date of enactment of this Act, the Administrator shall submit to Congress a report that analyzes the effects of different carbon dioxide reduction strategies and technologies on the emissions of mercury, sulfur dioxide, and nitrogen oxide, which cause acid rain, particulate matter, ground level ozone, mercury contamination, and other environmental problems.

When coal is burned due to combustion that is more or less completed the result is different levels of energy (B.T.U.'s), and different levels of air emissions (Sulfur Dioxide - SO2, Mercury - Hg), greenhouse gases (Carbon Dioxide CO2, Nitrogen Oxide - NO3), and amounts of ash that can potentially be toxic dependent on the conditions within the combustion chamber and ash that can or can not be used in a secondary market (ex.

New maximum levels for nitrogen oxides, a component of smog, and sulfur dioxide, which causes acid rain, are scheduled to take effect in 2012.

Countries included in Annex B of the Protocol (most Organization for Economic Cooperation and Development countries and countries with economies in transition) agreed to reduce their human - induced heat - trapping gas (greenhouse gas) emissions (carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride) by at least 5 % below 1990 levels in the commitment period 2008 to 2012.

One type of sulfur oxide, sulfur dioxide, is produced by burning fuel that contains high levels of sulfur.

The communities along this corridor have long faced health impacts and pollution from these refineries, and the pollution is only getting worse as the refineries accept and process tar sands crude, which exposes residents to even greater levels of toxic chemicals, particulate matter, sulfur dioxide, lead, carbon dioxide, and other harmful pollutants.

I long for the time when pollutants meant those that do real harm to humans, e.g., ground - level CO, lead, nitrogen oxides, sulfur dioxide, and size of particulate matter.

Rights - of - way on public lands result in landscape and habitat fragmentation, while coal combustion produces a number of gaseous byproducts, including CO2, nitrogen dioxide, sulfur dioxide, and methane — which exacerbate climate change and are associated with ground - level ozone (smog), air pollution, and acid rain.

The proposed limits for sulfur dioxide (SO2) and nitrogen oxides (NOx) do not meet the level of stringency required by the Clean Air Act.