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Upon completion of the initial testing phase, additional phases of testing may be warranted to further investigate continued high levels of benzene in Valdez. It is recommended that the EPA estimate of 0.4 ppb benzene (equivalent to a 1 in 100,000 cancer risk) be used as a trigger point for further testing and analysis in the City of Valdez
Benzene concentrations ranged 1-8 ppb in outdoor Valdez air prior to vapor
recovery, which is equivalent benzene levels measured in major cities such as Los Angeles, Boston and Houston.
2003 testing is expected to yield lower benzene levels in the City of Valdez
Benzene levels can be measured using Summa® canisters, or CEMS.
Benzene levels above 0.4ppb would warrant further attention
Originally posted by redeyedwonder
. And aren't these gases flammable as well?
S&F
[edit on 17-6-2010 by redeyedwonder] for spelling
[edit on 17-6-2010 by redeyedwonder]
What benzene is
* Benzene is a chemical that is a colorless or light yellow liquid at room temperature. It has a sweet odor and is highly flammable.
* Benzene evaporates into the air very quickly. Its vapor is heavier than air and may sink into low-lying areas.
* Benzene dissolves only slightly in water and will float on top of water.
Immediate signs and symptoms of exposure to benzene
* People who breathe in high levels of benzene may develop the following signs and symptoms within minutes to several hours:
o Drowsiness
o Dizziness
o Rapid or irregular heartbeat
o Headaches
o Tremors
o Confusion
o Unconsciousness
o Death (at very high levels)
* Eating foods or drinking beverages containing high levels of benzene can cause the following symptoms within minutes to several hours:
o Vomiting
o Irritation of the stomach
o Dizziness
o Sleepiness
o Convulsions
o Rapid or irregular heartbeat
o Death (at very high levels)
* If a person vomits because of swallowing foods or beverages containing benzene, the vomit could be sucked into the lungs and cause breathing problems and coughing.
* Direct exposure of the eyes, skin, or lungs to benzene can cause tissue injury and irritation.
* Showing these signs and symptoms does not necessarily mean that a person has been exposed to benzene.
Long-term health effects of exposure to benzene
* The major effect of benzene from long-term exposure is on the blood. (Long-term exposure means exposure of a year or more.) Benzene causes harmful effects on the bone marrow and can cause a decrease in red blood cells, leading to anemia. It can also cause excessive bleeding and can affect the immune system, increasing the chance for infection.
* Some women who breathed high levels of benzene for many months had irregular menstrual periods and a decrease in the size of their ovaries. It is not known whether benzene exposure affects the developing fetus in pregnant women or fertility in men.
* Animal studies have shown low birth weights, delayed bone formation, and bone marrow damage when pregnant animals breathed benzene.
* The Department of Health and Human Services (DHHS) has determined that benzene causes cancer in humans. Long-term exposure to high levels of benzene in the air can cause leukemia, cancer of the blood-forming organs
Originally posted by robbinsj
I am willing to test here in FL, where can I get some type of testing equipment???
During this trip, we visited 97 sites, of which 38 were previously sampled and 59 were at new locations. We collected twelve short-term samples, six of which were downwind and six were upwind from oil and gas facilities. Of these twelve samples, three results returned benzene concentrations that warrant further review. These three results are summarized below:
Sample FWFS1004-68 resulted in 3.2 ppbv [parts per billion by volume] of benzene on April 21, 2010. This 30-minute sample was collected in Forth Worth downwind of the Chesapeake Energy, Texas Midstream Gas Services, S & B Compressor Station off Corbett business Drive, approximately 0.2 miles south from East Berry Street and 50 yards east of Corbett Business Drive. In addition, grab SampleFWFS1004-84 detected 6.3 ppbv of benzene on April 21, 2010. The sample location remained the same in each of these instances.
Sample FWFS1004-75 resulted in 1.9 ppbv of benzene on April 22, 2010. This grab sample was collected downwind of the Ecana Oil & Gas Compressor Station – DAB Well 5H site that lies approximately 130 feet south of Interstate 20 Access Road and 0.25 miles east of Markum Ranch Road.
Originally posted by Faiol
nothing to see people ... this is a conspiracy against the brits and obama ....
Originally posted by OurskiesRpoisoned
Originally posted by Faiol
nothing to see people ... this is a conspiracy against the brits and obama ....
No, I believe this is a conspiracy against the constitution, and the people it protects.
Originally posted by OurskiesRpoisoned
You are the testing equipment!