Showing posts with label CONTAMINATED WATER FROM FRACKING. Show all posts
Showing posts with label CONTAMINATED WATER FROM FRACKING. Show all posts

Thursday, May 3, 2012

FOR IMMEDIATE RELEASE: Fracking has contaminated a drinking water source, expert says


FOR IMMEDIATE RELEASE
April 18, 2012

Media Contacts:

Kate Slusark, NRDC, 212-727-4592 or kslusark@nrdc.org
Connie Wilbert, Sierra Club Wyoming Chapter, 307-742-0056 or connie.wilbert@sierraclub.org
Gwen Lachelt, Earthworks’ Oil & Gas Accountability Project, 970-259-3353 x1 or gwen@earthworksaction.org
Steve Jones, Wyoming Outdoor Council watershed protection program attorney, 307-332-7031 x12, steve@wyomingoutdoorcouncil.org

Fracking has contaminated a drinking water source, expert says


Independent scientist says the EPA's conclusion is 'sound' — gas drilling has 'clearly' tainted a Pavillion, Wyoming area aquifer

Pavillion, Wyo. — Hydraulic fracturing, or fracking, has clearly contaminated a drinking water source east of the town of Pavillion, Wyoming, according to a report from an independent scientist released today, supporting the draft findings of an Environmental Protection Agency (EPA) investigation published in December. Hydrologist Tom Myers reviewed the EPA’s draft report at the request of the Natural Resources Defense Council, Wyoming Outdoor Council, Sierra Club and Oil and Earthworks’ Oil & Gas Accountability Project.

"It is clear that hydraulic fracturing has polluted the groundwater of Pavillion with contaminants associated with the fracking process," said Tom Myers, a highly regarded expert in hydrology and hydrogeology, and independent consultant for industry, government and environmental groups. "The EPA’s conclusion is sound."

The formation containing gas in Pavilion contains 169 gas wells, yet the formation is part of an underground source of drinking water. As a result, fracking fluid is being injected directly into an underground source of drinking water, according to the EPA.

Myers found that the Pavillion-area groundwater was especially vulnerable to contamination from fracking and gas drilling because of the area's geology, the well designs that were used, and the fact that the construction of the gas wells was inadequate to protect the aquifer. Any of these factors could contribute to the contamination found in the monitoring and water wells. Therefore, unless fracking is done very carefully in the area, contamination is likely, according to Myers.

“This confirms EPA’s preliminary conclusion that hydraulic fracturing can and does pollute groundwater,” said Earthworks’ Oil & Gas Accountability Project Director Gwen Lachelt. “Communities around the country should take heed. Although different gas plays have different geology, if fracking can pollute groundwater here, it can happen elsewhere.”

“Americans shouldn’t have to trade their safe drinking water for fuel,” said Amy Mall of the Natural Resources Defense Council. “These findings just confirm the need to get critical safeguards on the books that protect American’s basic rights – clean water and clean air.”

"Fracking is a dirty process and as Dr. Myers' findings show, one that can put our drinking water at risk," said Connie Wilbert of Sierra Club's Wyoming Chapter.  "If families don’t have clean water, what are they left with?  Is corporate profit really worth more than a safe, clean place to live?”

Steve Jones, Watershed Protection Program Attorney for Wyoming Outdoor Council said he is concerned about best management practices. 

"Sporadic bonding was reported for 12 of the wells for which EPA had well bore data made available to them," Jones said. "If this is representative of the entire field, chances are that hydraulic fracturing contaminants from the gas wells will get to the water wells of many rural Pavillion residents."

        
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Sunday, November 6, 2011

Coal Bed Methane vs Deep Shale Gas/Oil: Is Deeper Safer?

Citizens for Huerfano County

Shell says deep drilling – as far as 14,500 feet below the surface –is much safer than coal bed methane (CBM). Citizens for Huerfano County reviews the scientific and empirical evidence below that suggests deeper is NOT safer.
In 1998 Petroglyph Energy, Inc. began developing the CBM Little Creek Field near the River Ridge Ranch subdivision between Walsenburg and La Veta (Huerfano County, southern Colorado), eventually completing more than 50 wells. Wells depths ranged from 1,300 to 3,900 feet deep. Fewer than 10 non-CBM wells have also been drilled by Manzano, LLC since that time.

Shawn Fiorentino inspects his mother's well after a methane explosion
CBM disaster

Contrary to the industry’s repeated promise of jobs and prosperity, CBM ushered in an era that, in 2008, Rep. John Salazar described as “appalling and dire.”

The disastrous details are all too familiar to the residents of River Ridge Ranch and other rural Coloradans who live with oil and gas development. According to the Colorado Oil & Gas Conservation Commission (COGCC) records, the state agency responsible for regulating the oil and gas industry:
  • Petroglyph produced huge amounts of water but very little gas, drawing local water tables down more than 2,000 acre feet per year (Colorado Geological Survey, 2007).
Broad industry exemptions to the Safe Drinking Water Act, Clean Water Act, Clean Air Act, Superfund Act and other laws, have allowed the release of untold amounts of contaminated CBM production waste into regional air and water sheds.

In 2007, the Colorado Oil and Gas Commission issued a rare Cease and Desist Order to Petroglyph until it could operate "in a manner that protects [the] public health and safety". Earlier this year, Petroglyph announced it was pulling out of Huerfano County, leaving the problems outlined above and a mountain of unresolved questions about the long-term health, water resource and environmental effects of CBM extraction, in its wake.

Enter Royal Dutch Shell

Just as Petroglyph is plugging wells and preparing to leave, Shell Western Exploration and Production, Inc., (SWEPI), a division of Royal Dutch Shell, the world’s second largest petroleum company, began leasing mineral rights and conducting seismic testing in Huerfano County.

In Spring 2011, Shell proposed a 14,500-foot deep exploratory well near the town of La Veta. If an economically feasible discovery is made, this could usher in a new wave of oil and gas development in Huerfano.

Shell insists it will avoid the problems of CBM by drilling thousands of feet below ground and drinking water sources.

Is deeper safer? Or could Shell’s 14,500-foot deep natural gas drilling result in the same kinds of problems (or worse) as Petroglyph’s 2,000-foot deep CBM wells?
A clue to the movement of methane gas (and other frack-related substances) into the water wells in River Ridge Ranch lies in the areas unique and complex geology. Dramatic 100-foot tall radial dikes extend broadly from the base of Spanish Peaks down into the valley to the east. Both the dikes and the Spanish Peaks were formed when hot magma pushed up through the layers of sedimentary rock that contain oil and gas shales and water.

The result, according to hydrologist Thad McLaughlin, an expert on Huerfano County ground water, is "shale that normally has little or no permeability may be highly permeable where it lies adjacent to the intrusive rocks [i.e. dikes]”.

Thus, the dikes create communication between geological zones, otherwise assumed to be isolated (Fig. 4 below illustrates how dikes cross through different strata).

Worrall, 2004. Figure 4. Cross-section of Oakdale field, depicting a felsite intrusive body along a shallow thrust (pg. 6).


How deep the dikes go is unknown, but because they are derived from magma, they are certain to extend several miles down. In 2009, Spoon Valley Energy had to relocate a well when it struck an impenetrable intrusive dike 6,200 feet below the surface while drilling for gas near La Veta.

"Leaky dikes" (McLaughlin, 1966, Barkman, 2004), previously undetected faults (USGS, 2001) and sand channels (Denney, 2007), are three types of conduits that could allow contaminants and fracking fluids to migrate in unexpected ways. Without a better scientific understanding of the risks of drilling and fracking in Huerfano's complex geological environment, Shell's claim that "deeper is safer" is unfounded.

The potential for oil and gas drilling to dislodge and release naturally occurring, but highly toxic substances like hydrogen sulfide (known seeps occur on Middle Creek Road, Indian Creek and Sulphur Springs Road west of La Veta) and radioactive vanadium and uranium (there are 11 known radioactive occurrences in Huerfano County, Minedat.com) is also troubling, especially since the EPA and COGCC don't require monitoring of radioactive substances in flow back or production fluids.

Many impacts from oil and gas activities occur on the surface, irrespective of the depth of the well. Deep drilling and fracking require enormous water and chemical inputs that must be trucked over rural back roads increasing the danger of surface spills and accidents. A 2008 ProPublica investigation found more than 1,000 documented cases of contamination in the US, including cases in Huerfano County.

Pollution from flowback and open production water pits leak and are subject to flooding. Even worse, they release harmful chemicals into the air we breathe.

Fracking uses an average of 5.3 million gallons of water per well. What impact will a new gas and oil play have on Huerfano's already stretched water resources? This important question will be the subject of a future post.

For: Citizens for Huerfano County
PO Box 1193 | La Veta CO 81055

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