It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
In an earlier post, I noted in haste some apparent discrepancies between EPA and BP acute toxicity data on the Corexit® dispersants. Little did I realize that the data mixup was actually telling me something much more significant: that the dispersant maker’s own test data demonstrate that the combination of oil plus dispersant is quite a bit more toxic than the dispersant alone and – even more significant – the combination is more acutely toxic than the oil by itself.
Let me repeat that: The data indicate that dispersed oil is more toxic than undispersed oil. EPA has posted the dispersant manufacturer Nalco’s “Technical Product Bulletins” for each of the dispersants that have been used in the Gulf: Corexit® EC9527A and Corexit® EC9500A.
Section VII of each of the bulletins shows the toxicity data for a) dispersant alone, b) the reference oil used in the test, No. 2 fuel oil, and c) a mixture of dispersant and test oil at a 1:10 ratio. Here are the data (remember, the lower the value, the more toxic the substance):
Just 2.61 parts per million of a 1:10 mixture of Corexit® EC9500A and oil kills 50% of silverside fish within 96 hours, at least under the test conditions.
* Assuming uniform mixing, that means that 1 gallon of that mixture added to 383,142 gallons of water would be sufficiently toxic to do the same.
* So far BP has added at least 1.2 million gallons of pure Corexit® dispersants to the Gulf. Assuming it’s mixed with 10 times as much oil, that’s enough dispersant to render equally toxic nearly 7,000,000 Olympic swimming pools worth of water. (There are about 660,000 gallons in an Olympic-sized swimming pool, the dimensions of which are about 164 x 82 x 6 feet.)
Assuming a water depth of 5000 feet at the spill site, that much water would occupy a block that is 10,600 x 10,600 x 5,000 feet, or 4 square miles on the surface of the water extending all the way down to the ocean floor. That's the volume of water that would be sufficiently toxic to kill half of the fish residing in it within 4 days. Diluting that another 10-fold (into the water underneath 40 square miles of the Gulf) would still kill 5% of the fish, and another 10-fold (400 square miles) would still kill 0.5% of the fish.
www.nytimes.com...
About 35,000 bags — or 250 tons — of oily trash have been carted away from this beach, said Lt. Patrick Hanley of the Coast Guard, who is stationed at Port Fourchon. And as of Monday, more than 175,000 gallons of liquid waste — a combination of oil and water — had been sent to landfills, as had 11,276 cubic yards of solid waste, said Petty Officer Gail Dale, also of the Coast Guard, who works with at the command center in Houma.
Michael Condon, BP’s environmental unit leader, said that tests have shown that the material is not hazardous, and can safely be stored in landfills around the region that accept oil industry debris.
“There’s no way that isn’t toxic,” said Gladstone Jones III, a New Orleans lawyer.
toxic material could leach into local aquifers from which more than 300 homes draw water.
“BP oil is responsible for polluting our sand beaches and our estuaries,”
The amorphous slick of oil mixed with chemical dispersants in the Gulf of Mexico, which now threatens Florida, Mississippi and Alabama, has already tarnished miles of treasured wetlands, marshes and beaches along the Louisiana coast.
"The view from the boat was pretty shocking. There is dispersed oil as far as the eye can see. You realize that wildlife simply have nowhere to go. If you are a dolphin, where to do you go? If you are a pelican diving for food, where do you go?"
When the group noticed a dead stingray floating in the water, they came to the conclusion that any number of things, including oil from the spill, could be responsible for killing the ray. Finally, the captain of the charter boat, an out of work fisherman, offered his opinion: “In all my years on the water, I’ve never seen a dead stingray floating on the water like that.”
Originally posted by getreadyalready
reply to post by LurkerMan
I agree with you to an extent, but then again, they can't just do nothing.
If they don't stop the leak with the relief wells by the end of August, I don't think any amount of effort will help. The Gulf will be a vast deadzone, all the Coastal communities will be ghost towns, the economy of Florida will be bankrupt, and the entire area that I love will be a 3rd world country by this time next year.
Originally posted by getreadyalready
reply to post by getreadyalready
More from their site. Of course they want to push their product, but they also want to protect their image and be remembered as some of the Good Guys in this horrible incident. They don't want to be lumped in with BP or the GOvernment. Therefore, I tend to believe what is on their site and press releases.
Also, the oil has not spread as far or as quickly as anybody predicted. Maybe this stuff is the reason. If it is breaking it down and sinking it to the sea floor, then it may be protecting those sensitive marshes? The whole situation stinks, but I can't demonize the Corexit just yet. It sounds like pretty good stuff.
Biodegradation
• A March, 1994, report created by France’s Institut National de L’Enviroenment Industriel et des Risques indicated that COREXIT 9500 largely biodegraded in 28 days. COREXIT oil dispersant was first applied to the Gulf oil slick on April 23.
Bioaccumulation
“Over the past few days, there has been substantial misunderstanding about the nature and composition of our product,” said Erik Fyrwald, President and CEO of Nalco. “COREXIT has played a significant role in mitigating the disastrous consequences of the Gulf oil spill and has done so effectively and safely.
Concentration
• At 840,000 gallons, the amount of dispersant in the region of the 3,850 square-mile slick represents an average concentration of about 30 parts per billion to the 10 meters of depth the dispersant will go – even without factoring in that a substantial portion of the product has already biodegraded.
• By comparison, the EPA allows drinking water to contain non-biodegradable contaminants -- including carcinogens and reproductive toxins -- that exceed the level of biodegradable chemicals present in COREXIT in the Gulf.
Originally posted by getreadyalready
Actually becoming more and more of a fan of Corexit the more I read. Here are some quotes from the MSDS showing that it isn't considered harmful.
From the MSDS:
Safe to transport. No special warnings.
PRODUCT IS NOT REGULATED DURING TRANSPORTATION For Packages Greater Than 119 Gallons: Proper Shipping Name : COMBUSTIBLE LIQUID, N.O.S. Technical Name(s) : PETROLEUM DISTILLATES UN/ID No : NA 1993 Hazard Class - Primary : COMBUSTIBLE
No specifically harmful ingredients listed. Just typical classes of compounds.
None of the substances are specifically listed in the regulation. CLEAN AIR ACT, Sec. 111 (40 CFR 60, Volatile Organic Compounds), Sec. 112 (40 CFR 61, Hazardous Air Pollutants), Sec. 602 (40 CFR 82, Class I and II Ozone Depleting Substances) : None of the substances are specifically listed in the regulation.
Low Human Risk, Low environmental risk.
OTHER INFORMATION Due to our commitment to Product Stewardship, we have evaluated the human and environmental hazards and exposures of this product. Based on our recommended use of this product, we have characterized the product's general risk. This information should provide assistance for your own risk management practices. We have evaluated our product's risk as follows: * The human risk is: Low * The environmental risk is: Low Any use inconsistent with our recommendations may affect the risk characterization.
Takes repeated or prolonged exposure to get acute symptoms. Even then the main symptoms are only aggravation of existing dermatitis or breathing problems. There was no dangers listed for ingestion other than the danger of aspirating it back into the lungs.
INHALATION : Repeated or prolonged exposure may irritate the respiratory tract. SYMPTOMS OF EXPOSURE : Acute : A review of available data does not identify any symptoms from exposure not previously mentioned. Chronic : Frequent or prolonged contact with product may defat and dry the skin, leading to discomfort and dermatitis. AGGRAVATION OF EXISTING CONDITIONS : Skin contact may aggravate an existing dermatitis condition
4. FIRST AID MEASURES EYE CONTACT : Immediately flush with plenty of water for at least 15 minutes. If symptoms develop, seek medical advice. SKIN CONTACT : Immediately wash with plenty of soap and water. If symptoms develop, seek medical advice. INGESTION : Do not induce vomiting: contains petroleum distillates and/or aromatic solvents. If conscious, washout mouth and give water to drink. Get medical attention. INHALATION : Remove to fresh air, treat symptomatically. Get medical attention. NOTE TO PHYSICIAN : Based on the individual reactions of the patient, the physician's judgement should be used to control symptoms and clinical condition.
Treat by flushing with water, drinking water, and treating symptoms. No vomiting, no stomach pumping, not too many warnings. It even says for the physician to use their own judgement as to how much treatment of the symptoms should be given. Sounds less harmful than just about anything in my kitchen/bath/or garage.
Just 2.61 parts per million of a 1:10 mixture of Corexit® EC9500A and oil kills 50% of silverside fish within 96 hours, at least under the test conditions.
Originally posted by getreadyalready
... It is very non-toxic.
ENVIRONMENTAL PRECAUTIONS : Prevent material from entering sewers or waterways.
ECOLOGICAL INFORMATION ECOTOXICOLOGICAL EFFECTS : No toxicity studies have been conducted on this product.
• Common batteries: AA, AAA, C cells, D cells, and button batteries, such as those used in hearing aids. These batteries contain toxic heavy metals such as cadmium, as well as corrosive chemicals.
• Fluorescent light bulbs and lamps that contain mercury: Fluorescent light tubes and bulbs, high-intensity discharge (HID), metal halide, sodium and neon bulbs all contain mercury vapors. If broken, mercury can be released into the environment and may cause nerve damage as well as a host of other serious illnesses.
• Thermostats, thermometers and novelty items: Thermometers, greeting cards that play music, shoes with lighted soles, and certain maze games contain mercury.
• Electronic devices: Computer monitors, TVs, cell phones, pagers, printers, computer bodies (CPUs and processors), video cassette recorders (VCRs), cordless and regular telephones, radios, and microwave ovens contain lead, cadmium, chromium, and copper.
• Pilot light sensors, electric switches, barometers, blood pressure devices, stoves, ovens, water heaters, space heaters, clothes dryers, and furnaces frequently use mercury switches.
• Aerosol cans: Flammable propellants such as butane can remain in aerosol cans if not completely empty. If a can is marked “flammable” or “toxic,” it should not be tossed into the trash unless it is completely empty of all contents.
Acute Health Effects:
From MSDS Health Hazard Data Route's) of Entry: Inhalation? Skin? Ingestion? Yes Yes Not likely. Health Hazards (Acute and Chronic) Harmful if swallowed, inhaled, or absorbed through skin. This product may cause serious irritant, respiratory, and/or allergic reactions in sensitive individuals. Signs and Symptoms of Exposure Irritation of eyes, skin, and mucous membranes. Possible irritant/allergic dermatitis and respiratory signs and symptoms, the onset of which may be delayed. Medical Conditions Generally Aggravated by Exposure Existing dermatological conditions, such as eczema, and respiratory conditions, such as bronchial asthma and/or chronic bronchitis, may be exacerbated.
Disposal:
Accordingly, incineration at a non-hazardous waste treatment facility is the preferred method of disposal.