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D'coda Dcoda

Sickness,Death, Environmental Impacts of Dispersants - 0 views

  • The report, The Chaos Of Clean-Up, was prepared in response to widespread public concern among Gulf Coast communities about the safety of chemicals, known as dispersants, that were poured into the Gulf of Mexico to disperse oil during the Deepwater Horizon disaster. This report presents findings from a literature review of scientific research on each of 57 chemical ingredients that are found in dispersants that were eligible for use at the time of the Deepwater Horizon disaster. The ingredients and formulas for various dispersants on the market typically are not available, and it is not fully known which chemical ingredients among the 57 are found in which dispersant.
  • The review demonstrates the wide range of potential impacts from exposure to the chemicals found in dispersants. From carcinogens, to endocrine disruptors, to chemicals that are toxic to aquatic organisms, some of the ingredients in oil dispersants are indeed potential hazards. For instance, of the 57 ingredients, 5 chemicals are associated with cancer 33 chemicals are associated with skin irritation, from rashes to burns 33 chemicals are linked to eye irritation 11 chemicals are suspected or potential respiratory toxins or irritants 10 chemicals are suspected kidney toxins.
  • As for potential effects on the marine environment, 8 chemicals are suspected or known to be toxic to aquatic organisms 5 chemicals are suspected to have a moderate acute toxicity to fish Clearly, some of the chemical ingredients are more toxic than others, and some dispersants are more toxic in particular environments. The widely-varying toxicity of different dispersants underscores the importance of full disclosure and proper selection of dispersants for use in oil spill response.
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  • While revealing some of the potential hazards of dispersants, the literature review also highlights the extent of our current lack of knowledge about dispersants and their impacts. Ultimately, the absence of thorough scientific research on dispersants and the chemicals that comprise dispersants, as well as the lack of public disclosure of each dispersant's ingredients and formulation, hinders any effort to understand the full impacts of dispersant use. These findings call for more research, greater disclosure of the information that is known, comprehensive toxicity testing, the establishment of safety criteria for dispersants, and careful selection of the least toxic dispersants for application in oil spill response. Download Complete Report: The Chaos Of Clean-Up
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    An executive summary on the dispersants used in the BP oil spill
Jan Wyllie

raised garden beds: hugelkultur instead of irrigation - 1 views

  • grow a typical garden without irrigation or fertilization has been demonstrated to work in deserts as well as backyards use up rotting wood, twigs, branches and even whole trees that would otherwise go to the dump or be burned it is pretty much nothing more than buried wood can be flush with the ground, although raised garden beds are typically better can start small, and be added to later can always be small - although bigger is better You can save the world from global warming by doing carbon sequestration in your own back yard! perfect for places that have had trees blown over by storms can help end world hunger give a gift to your future self
  • It's a german word and some people can say it all german-ish. I'm an american doofus, so I say "hoogle culture". I had to spend some time with google to find the right spelling. Hugal, hoogal, huegal, hugel .... And I really like saying it out loud: "hugelkultur, hoogle culture, hoogal kulture ...." - it could be a chant or something. I learned this high-falootin word at my permaculture training. I also saw it demonstrated on the Sepp Holzer terraces and raised beds video - he didn't call it hugelkultur, but he was doing it. Hugelkultur is nothing more than making raised garden beds filled with rotten wood. This makes for raised garden beds loaded with organic material, nutrients, air pockets for the roots of what you plant, etc. As the years pass, the deep soil of your raised garden bed becomes incredibly rich and loaded with soil life. As the wood shrinks, it makes more tiny air pockets - so your hugelkultur becomes sort of self tilling. The first few years, the composting process will slightly warm your soil giving you a slightly longer growing season. The woody matter helps to keep nutrient excess from passing into the ground water - and then refeeding that to your garden plants later. Plus, by holding SO much water, hugelkultur could be part of a system for growing garden crops in the desert with no irrigation. I do think there are some considerations to keep in mind. For example, I don't think I would use cedar. Cedar lasts so long because it is loaded with natural pesticides/herbicides/anti-fungal/anti-microbial (remember, good soil has lots of fungal and microbial stuff). Not a good mix for tomatoes or melons, eh? Black locust, black cherry, black walnut? These woods have issues. Black locust won't rot - I think because it is so dense. Black walnut is very toxic to most plants, and cherry is toxic to animals, but it might be okay when it rots - but I wouldn't use it until I had done the research. Known excellent woods are: alders, apple, cottonwood, poplar, willow (dry) and birch. I suspect maples would be really good too, but am not certain. Super rotten wood is better than slightly aged wood. The best woods are even better when they have been cut the same day (this allows you to "seed" the wood with your choice of fungus - shitake mushrooms perhaps?). Another thing to keep in mind is that wood is high in carbon and will consume nitrogen to do the compost thing. This could lock up the nitrogen and take it away from your growies. But well rotted wood doesn't do this so much. If the wood is far enough along, it may have already taken in sooooo much nitrogen, that it is now putting it out! Pine and fir will have some levels of tanins in them, but I'm guessing that most of that will be gone when the wood has been dead for a few years. In the drawings at right, the artist is trying to show that while the wood decomposes and shrinks, the leaves, duff and accumulating organic matter from above will take it's place. The artist is showing the new organic matter as a dark green.
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    "raised garden beds: hugelkultur instead of irrigation raised garden beds hugelkultur logs and soil after one month raised garden bed hugelkultur after one month hugelkultur raised garden bed hugelkultur after one year raised garden beds after two years raised garden bed hugelkultur after two years raised garden beds hugelkultur after twenty years raised garden bed hugelkultur after twenty years hugelkultur raised garden beds in a nutshell: grow a typical garden without irrigation or fertilization has been demonstrated to work in deserts as well as backyards use up rotting wood, twigs, branches and even whole trees that would otherwise go to the dump or be burned it is pretty much nothing more than buried wood can be flush with the ground, although raised garden beds are typically better can start small, and be added to later can always be small - although bigger is better You can save the world from global warming by doing carbon sequestration in your own back yard! perfect for places that have had trees blown over by storms can help end world hunger give a gift to your future self the verbose details about hugelkultur raised garden beds It's a german word and some people can say it all german-ish. I'm an american doofus, so I say "hoogle culture". I had to spend some time with google to find the right spelling. Hugal, hoogal, huegal, hugel .... And I really like saying it out loud: "hugelkultur, hoogle culture, hoogal kulture ...." - it could be a chant or something. I learned this high-falootin word at my permaculture training. I also saw it demonstrated on the Sepp Holzer terraces and raised beds video - he didn't call it hugelkultur, but he was doing it. Hugelkultur is nothing more than making raised garden beds filled with rotten wood. This makes for raised garden beds loaded with organic material, nutrients, air pockets for the roots of what you plant, etc. As the years pass, the deep soil of your raised ga
D'coda Dcoda

"A Staggering Mess" as Tsunami Debris Hits Alaska Coast Early [01May12] - 0 views

  • a non-profit organization that estimates it has cleared nearly 1,000,000 pounds of plastic debris from Alaskan coasts over the past 10 years, is reporting “tons” of what it believes is likely tsunami debris washing up on the coasts of the Kayak and Montague islands. Chris Pallister, president of Gulf of Alaska Keeper, told Alaska’s KTUU TV that ““It’s a staggering mess [...] the magnitude of this is just hard to comprehend and I’ve been looking at this stuff a long time.
  • In my opinion, this is the single greatest environmental pollution event that has ever hit the west coast of North America. The slow-motion aspects of it have fooled an unwitting public. It far exceeds the Santa Barbara or Exxon Valdez oil spills in gross tonnage and also geographic scope. (I was in Prince William Sound during the during the Exxon Valdez oil spill and so have a sense of comparison). Tens of thousands of miles of coastline from California to the Aleutian Islands are going to be hit with billions of pounds of toxic debris. NOAA’s latest estimate is that 1.5 million tons of largely plastic debris will hit the western United States coast. That is 30 billion pounds. We expect Alaska to get the largest percentage of that with much of it lodging on northern Gulf of Alaska beaches. Most of this will be plastic which is full of inherent toxic chemicals that will leach into the environment for generations.
  • Possibly worse are the millions of containers full of anything from household chemicals to toxic industrial chemicals that are floating our way. They will eventually burst upon our shores…in sensitive inter-tidal spawning and rearing habitat, endangering shorebirds, marine mammals, fish and everything in between. We are already finding empty and partially full containers of tsunami related chemicals and fuel drums along the northern Gulf of Alaska shoreline. The heavier fuller containers will come later because the wind doesn’t push them as fast toward the Gulf of Alaska as they are more current driven. The light-weight, high-windage debris such as Styrofoam, buoys, bottles, empty containers and drums have already arrived in staggering quantities
D'coda Dcoda

Deepwater Horizon Oil Spill Contaminated Ocean's Food Chain, Study Finds -- Health & We... - 0 views

  • A recent study has confirmed that toxic compounds derived from oil that was released in the Deepwater Horizon spill that occurred in the Gulf of Mexico nearly two years ago has entered the ocean's food chain through microorganisms.
  • The study, funded by the National Science Foundation and led by a team of researchers from East Carolina University, the University of Maryland Center for Environmental Science, Oregon State University, Georgia Institute of Technology, and the U.S. Geological Survey, detected chemical compounds found in oil called hydrocarbons, some known to be carcinogenic, within the bodies of microscopic crustaceans called zooplankton.
  • "Our research helped to determine a 'fingerprint' of the Deepwater Horizon spill--something that other researchers interested in the spill may be able to use," Dr. Siddhartha Mitra of East Carolina University said in a statement. "Furthermore, our work demonstrated that zooplankton in the Northern Gulf of Mexico accumulated toxic compounds derived from the Macondo well." Zooplankton form the base of the ocean's food web and are typically fed upon by fish larva and smaller crustaceans, said Dr. David Kimmel of East Carolina University. Whether or not these larger organisms have accumulated significant amounts of toxic compounds, or has entered the human food chain, has yet to be determined. "That is certainly one of the questions we would like to see answered with more research," said Dr. Mitra in a phone interview.
Marc-Alexandre Gagnon

The Apocalyptic Landscapes of Alberta's Oil Sands | Wired Science | Wired.com [07Nov11] - 0 views

  • More than 12,000 opponents of the proposed Keystone XL oil pipeline encircled the White House in Washington, D.C. on Nov. 6, weeks before President Obama's expected decision on what's become an iconic environmental battle.
  • Running to the Gulf of Mexico from Alberta's oil fields, the pipeline would cut through the Great Plains and threaten oil spills into the Oglalla aquifer, the single largest source of fresh water in the United States.
  • Though federal permits haven't yet been granted, landowners on the pipeline's path have been threatened with eminent domain land seizures; the federal review process has been corrupt, steered by oil company executives with insider connections and industry-hired consultants.
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  • Alberta's vast oil deposits are dirty and hard to reach, mixed into sand or locked deep underground. Recovering the oil is a hugely energy-intensive process, multiplying its climate footprint at a moment when extreme weather is getting worse.
  • Primeval forests and bogs are denuded and drained, replaced by barren slopes and toxic ponds. It may take centuries for life there to recover.
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