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Oil-eating microbes in the Gulf of Mexico left behind the most toxic remnants of the Deepwater Horizon spill

Impacts likely to persist for decades

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Oil: Can’t live with it, can’t live without it.

Staff Report

FRISCO — Oil-eating microbes in the Gulf of Mexico may have helped break down some of the pollution from the 2010 Deepwater Horizon disaster, but some of the most toxic constituents of BP’s oil probably remain, most likely at the bottom of the sea.

Two new Florida State University studies in a deep sea oil plume found found that a species of bacteria called Colwellia likely consumed gaseous hydrocarbons and perhaps benzene, toluene, ethylbenzene and xylene compounds that were released as part of the oil spill — but not the polycyclic aromatic hydrocarbons (PAHs), which are a group of semi-volatile organic compounds that are present in crude oil and can cause long-term health problems such as cancer. Continue reading

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4 years after Deepwater Horizon oil disaster, dispersant still found lingering in the environment

Study looks at concentrations of oil and dispersant in ‘sand patties’ found along the Gulf Coast

32 beaches were sampled, with contamination found at 26 sites. MAP COURTESY JAMES "RIP" KIRBY, UNIVERSITY OF SOUTH FLORIDA.

In 2012, University of South Florida scientists found oil remnants all along the Gulf Coast, often at levels that pose a potential risk to human health. MAP COURTESY JAMES “RIP” KIRBY, UNIVERSITY OF SOUTH FLORIDA.

New research in Florida shows

The mess from BP’s Deepwater Horizon oil disaster is still not completely cleaned up.

Read more Summit Voice stories about dispersants and the aftermath of the Deepwater Horizon spill here.

By Summit Voice

FRISCO — Fossil fuel companies involved in offshore oil drilling may have to rethink their emergency response plans for oil spills after a new study showed that dispersant used to prevent large slicks persists in the environment much longer than previously thought.

Scientists at Haverford College and Woods Hole Oceanographic Institution (WHOI) has found that the dispersant compound DOSS, which decreases the size of oil droplets and hampers the formation of large oil slicks, remains associated with oil and can persist in the environment for up to four years.

The EPA approved the use of massive quantities of dispersant after the 2010 Deepwater Horizon oil disaster in hopes of preventing oil from fouling beaches, reasoning that the chemicals degrade rapidly. The Deepwater oil spill was the largest ever, releasing at least 210 million gallons of oil. BP applied almost 2 million gallons of dispersant, much of it deep beneath the surface.

But it’s far from clear that the use of dispersant is an overall environmental benefit. Ongoing studies have shown that the mixture of dispersant and oil is far more toxic to many marine organisms than either substance on its own. For example, a study by scientists with the Georgia Institute of Technology and Universidad Autonoma de Aguascalientes, Mexico showed that the oil-dispersant mix was up to 52 times more toxic to tiny rotifers, microscopic grazers at the base of the Gulf’s food chain. Continue reading

USGS study shows that injecting wastewater from fracking can trigger earthquakes up to 20 miles away

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Oklahoma earthquake spike definitively linked with wastewater injection.

More monitoring and mitigation needed, scientists say

By Summit Voice

FRISCO — Just a small number of wastewater injection wells associated with fossil fuel exploitation can lead to a dramatic increase in earthquakes, U.S. Geological Survey scientists concluded in a new study focusing on the spike in Oklahoma earthquakes since 2009. Wastewater injection can trigger earthquakes up to 20 miles away, the researchers found, far beyond the three-mile radius commonly used as a measure for diagnosing induced earthquakes.

The dramatic increase in earthquakes in central Oklahoma since 2009 is likely attributable to subsurface wastewater injection at just a handful of disposal wells. Oklahoma earthquakes constitute nearly half of all central and eastern U.S. seismicity from 2008 to 2013, many occurring in areas of high-rate water disposal, said Cornell University geophysics professor Katie Keranen, who led the study. Continue reading

Study: Exposure to crude oil from the Deepwater Horizon disaster causes swimming deficiencies in juvenile mahi mahi

Evidence is mounting that BP’s oil harmed millions of large fish

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Crude oil spreads across a wide swath of the Gulf of Mexico during the 2010 Deepwater Horizon oil disaster.

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By Summit Voice

FRISCO — Along with fouling beaches and wetlands along the Gulf Coast, the 2010 Deepwater Horizon oil spill also had profound impacts on the open ocean and deep sea environment. The four million barrels of crude oil that spewed into the Gulf of Mexico from BP’s failed oil drilling operation potentially exposed millions of fish and other ocean organisms to highly toxic compounds.

That includes many commercially and ecologically important open-ocean fish species such as bluefin and yellowfin tunas, mahi mahi, king and Spanish mackerels. In one of the most recent followup studies on the impacts of the spill, researchers with the University of Miami Rosenstiel School of Marine and Atmospheric Science found that exposure to the crude oil resulted in decreased swimming performance in young mahi mahi. Continue reading

State, feds warn of increased Oklahoma earthquake risk

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Oklahoma earthquakes are on the increase.

Spike in tremors linked with injection of wastewater from fracking

By Summit Voice

FRISCO — Federal and state geologists say there’s an increased risk of a strong earthquake in Oklahoma after the overall rate of quakes increased by about 50 percent since late 2013.

After statistically analyzing the increased rate of earthquakes, the scientists said they’re fairly certain it’s not just natural variability — deep injection of waste water from fossil fuel exploitation is seen as a likely cause. Continue reading

Lawsuit aims to block expansion of Colorado coal mine

More coal mining equals more ozone

The U.S. is the second-largest producer of coal in the world, thanks in part to massive surface mines like this one in Wyoming. Photo courtesy BLM.

The U.S. is the second-largest producer of coal in the world, thanks in part to massive surface mines like this one in Wyoming. Photo courtesy BLM.

Staff Report

FRISCO — Federal officials may have failed to adequately assess the environmental impacts of more coal mining in northwestern Colorado, according a conservation group that’s suing the Bureau of Land Management over an expansion permit for the Deserado coal mine, located in Rio Blanco County in northwestern Colorado directly south of Dinosaur National Monument.

The mine fuels the 500-megawatt Bonanza power plant, located 30 miles west in Uintah County, Utah. The mine and the power plant are connecte by a dedicated electric train.

According to WildEarth Guardians, the BLM failed to address air quality impacts from fossil fuel combustion from the Bonanza facility. The group said regional air quality monitoring shows continued violations of ozone. According to the lawsuit, the mine expansion would mean that the Bonanza power plant would continue to operate for another 16 percent years — too long in the context of climate change. Continue reading

Environmental groups ask EPA to set national limits on pollution from oil and gas production

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Oil and gas drilling roads and pads are spreading into remote backcountry areas of Colorado. bberwyn photo.

Cancer-causing chemicals escaping from fossil fuel facilities by the ton

Staff Report

FRISCO — Colorado communities looking to regulate the toxic and dangerous impacts of oil and gas drilling may not get any help from Gov. John Hickenlooper, but they may get some backup from a huge coalition of environmental groups that have petitioned the EPA for limits on oil and gas wells and associated equipment in population centers around the U.S.

As thousands of new wells are drilled across the U.S. every day, some studies suggest that at least 100,000 tons per year of hazardous air pollution from oil and gas well sites — including benzene, formaldehyde, and naphthalene — are escaping into the atmosphere. These pollutants have been linked to respiratory and neurological problems, birth defects, and cancer. Continue reading

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