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20.10.2013
Here's a look at what you need to know about the shooting death of 17-year-old Trayvon Martin in February 2012. Maldives, Somalia, finally disasters stuck America and you still You did nothing and others did little. Invisible pollution escapes from engines, compressors, wellheads and other equipment at underground storage fields like the one in Aliso Canyon. Climate change is already disrupting fire seasons, rainfall rhythms and coastal communities.
Only two other underground fields in the United States discharged more greenhouse gases in 2014, according to an analysis of the most recent U.S.
As Porter Ranch residents prepare to return home and regulators tighten well-safety rules, the long-term environmental costs of storing pressurized gas remain. The facility in the hills above the San Fernando Valley emitted 206,268 combined tons of natural gas, carbon dioxide and other pollutants in 2014, roughly the same amount as 43,000 cars driven for a year. Aliso Canyon happens to be the fifth-largest underground storage facility in the nation, providing gas to 20.5 million customers, so large emissions might be expected. That Aliso Canyon was a major source of pollution on any given day, even without the massive leak that was discovered in October and controlled last week, rings true with some Porter Ranch residents. Residents have been complaining of nosebleeds and other health problems for years, Maldonado said. The Southern California Gas Co., a subsidiary of San Diego-based Sempra Energy, declined to comment for this story. Picture the labyrinthine pipes and heavy machinery needed to pressurize and inject gas more than a mile underground.
While the SoCalGas Aliso Canyon field ranks third for total emissions, one Houston-based company owns several storage fields in the top five, either in terms of absolute pollution or when adjusted for reservoir size.
Boardwalk Pipeline Partners, LP (NYSE: BWP) controls Hattiesburg Gas Storage and Petal Compressor, a tiny reservoir that in 2014 emitted the second highest total amount in the nation. Over the past 20 years, many companies have made sharp reductions in pollution by replacing leaky components, said R. Natural gas has been so abundant at these underground fields that it has been used instead of air to simply maintain pressure in some equipment, Subramanian said.


SoCalGas expects to spend more than $23 million over three years to maintain, replace and upgrade aging and obsolete compressors at its four underground storage facilities in Southern California, according to a regulatory filing. Operators, though, can be reluctant to fix equipment if it results in downtime and cuts into profits, Subramanian said. Since the uncontrolled methane flow at Aliso Canyon began, many have called for greater oversight and cleaner operations — to prevent catastrophic leaks underground and the slower, ongoing equipment emissions. Early in February, federal regulators issued a government advisory “to remind all owners and operators” to look for leaks and corrosion, fix them and make sure pressures on equipment don’t exceed design pressure.
The American Petroleum Institute, in response, noted that it had already issued its own best practice guidelines aimed at storage operators in September, before the Aliso Canyon well failure. While the EPA reports of pollution from gas storage areas show serious emissions from dozens of facilities, they don’t come close to counting all the pollution, say scientists who have made systematic measurements at many sites. Studies indicate climate emissions from storage areas may be 260 percent of those reported to the federal government. The data do not include the methane leaking from pressurized equipment if it is in standby mode.
The data only include emissions from storage operators that have more than 25,000 tons of carbon dioxide equivalent emissions per year. These past months have been a trial for Aliso Canyon’s neighbors in the San Fernando Valley. All or part of your gift may be tax deductible as a charitable contribution.  Please check with your tax advisor.
Pakistan, Iran, charity, Charities, Red Cross, Christian Children's Fund, United Way, Methodist, Episcopalian, Presbyterian, Orthodox Russian Greek, Catholic Charities, Catholicism, Baptist, Muslim, Hindu, Buddhist, Shinto, Naturalist, Atheist, Agnostic, Agnosticism, Mormon, Mormons, Temple, Church, Cathedral, Bible, Koran, Shinto, Islam, Good Samaritan, Children's Hospital, St. Carbon dioxide flowed from its heavy machinery, and methane seeped from valves and equipment.
Everyday emissions from gas storage and transmission are a significant source of greenhouse-gas pollution. They are made up partly of methane or natural gas, the same gas used for heating and gas stoves, so leaks mean waste. High emissions from a storage site could also indicate that people living nearby are being exposed to other, ride-along contaminants such as benzene or toluene, said David Lyon, another greenhouse gas expert with the defense fund.


These compressor stations pollute from two main sources: Carbon dioxide pours from internal combustion engines — similar to those in a car — that drive the compressors.
Subramanian, a researcher with Carnegie Mellon University who has measured emissions at gas storage sites. Many companies have now switched these so-called pneumatic devices to electric compressed air.
The company would need state approval for any customer rate increases, otherwise costs could come out of shareholders’ pockets. Today, gas companies might hire a specialist to search for leaks using cameras, while in the future ongoing monitoring could spot leaks automatically, said Lyon of the Environmental Defense Fund.
For instance, the Aliso Canyon leak will not be included in Southern California Gas Co.’s EPA filings next year. About 4,500 families had to leave their homes, waiting for the failed well to stop flowing. This initiative is based on the reality that "One Can Make a Difference." That means you and me! Three aging natural gas turbine-powered compressors are being replaced with 22,000 horsepower electric compressors, a project that is is expected to reduce carbon dioxide.
Congressman Brad Sherman, D-Sherman Oaks, also said he has been in discussions with the Pipeline and Hazardous Materials Safety Administration, a unit of the Department of Transportation that has come in for particularly pointed questions. Larger fields in Texas and West Virginia emitted substantially less than Aliso Canyon, according to an analysis by the Los Angeles News Group and inewsource. It absorbs heat in the atmosphere and holds it close to the earth, where it affects oceans, land temperatures and weather. The forms on which companies report their emissions don’t even have a place for giant, uncontrolled leaks.



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