— AWRA-CO (@AWRACO) August 27, 2014
From the Glenwood Springs Post Independent (John Stroud:
A second round of baseline water quality testing within the Thompson Divide region south of Glenwood Springs where natural gas development is proposed finds that two of the major drainages where samples were taken are presently “uncontaminated by any human activities.”
The study, released Thursday by the Thompson Divide Coalition, analyzed both surface and ground water within the Four Mile and Thompson Creek watersheds.
It is in follow-up to the first phase of the study in 2009-10, which produced similar results. Both studies were commissioned by the coalition, which is working to protect the Thompson Divide region from drilling, and were conducted by researchers from the Roaring Fork Conservancy.
Robert Moran, a water quality, hydrogeologic and geochemical specialist with Michael-Moran Associates, worked with the conservancy to analyze the data and is the main author of both reports.
Together, the baseline data contained in the studies should provide a yardstick against any changes in water quality within the two drainages, whether it’s from oil and gas development or other activities, Moran said during a telephone press conference Thursday arranged by Thompson Divide Coalition Executive Director Zane Kessler.
Moran also reiterated one conclusion in his analysis, which is that “some degradation of water quality is inevitable if oil and gas exploration and development becomes a reality within the Four Mile Creek and Thompson Creek watersheds.”
“This should serve as an important reminder that our fisheries and watersheds in the Thompson Divide are at risk,” Kessler said. “These watersheds are the lifeblood of our communities and they deserve to be protected for posterity.”
More Roaring Fork River watershed coverage here.
All that hullabaloo around the #fracking fight ends with both sides throwing in the towel — Denver Business JournalAugust 5, 2014
From The Greeley Tribune (Sharon Dunn):
Platteville rancher Roy Wardell was asking questions long before an earthquake shook the ground around Greeley. The oil and gas wastewater injection well proposed near his ranch would be the sixth in the immediate proximity to his small operation. It only made sense that adding another high pressure well in a line of other high pressure wells would tempt fate. Then came May 31. An earthquake rattled Greeley for a second or two, and his fears were confirmed.
“This is a concentration of wells that doesn’t exist anywhere else in Weld County,” Wardell told the Colorado Oil and Gas Conservation Commission in Greeley on Monday. “My concern is you cannot confidently say there’s not a seismic risk. It flies in the face of logic.”
He was asking that an injection well near his ranch proposed by High Plains Disposal be denied, given its proximity to other injection wells. Injection wells have been linked to earthquakes across the country. The majority of them operate for years without incident, while a few others don’t.
Oil and gas well wastewater is injected into deep underground wells into porous formations. Seismic activity occurs when water slips through geologic structures, allowing movement. The process of injection is considered more environmentally friendly than the process a decade ago of dumping used well water into pools at the well site.
All injection wells in Colorado undergo testing for a variety of concerns, including seismic activity. At present, there are 28 injection wells in the county, with another 20 in the permitting process.
The operator of the Greeley well, out by the Greeley-Weld County airport, is under investigation for potential violations after researchers, in a 20-day period in which NGL was required to stop injecting water, isolated the well as the cause of the earthquake and about a dozen smaller ones since. That well is 18 miles north of the proposed well near Wardell’s ranch.
In a hearing before the COGCC, state officials and representatives of High Plains Disposal discussed their plans to ensure safety, including placing seismic monitoring equipment at the well to act as an early-warning system of any induced activity. They said the Greeley well had different circumstances than the one High Plains had proposed, including drilling into a different formation.
Commission members stated while the concern is there, they felt comfortable with approving the well.
“If I were a landowner, I’d have the same concerns that there is a possibility for seismic activity,” said Commissioner Bill Hawkins. “All the technical testimony given today indicates it is not likely, and there really isn’t any reason we can see other than the fact that a well 20 miles away had seismic activity. Certainly seismic activity is of concern to the public and a large part of the county, and it’s a concern to the commission. If there is any activity we would definitely stop, (it is) injections.”
Commissioner Mike King agreed, stating that if there is any seismic activity associated with the well, they would respond just as they did with the Greeley well, and shut off injections immediately.
“Things change,” said King, also the director of the state Department of Natural Resources. “We found out in other wells there were some factors that weren’t as clear … (and it) caused us to take a 20-day timeout, to see what we missed, what things needed to change. … I’m comfortable, although in the last month, I’ve become less comfortable in general. I’m OK with being a little more on edge until we get more information.”
Wardell knew he was fighting a losing battle.
“I feel heard,” he said after the meeting.
More oil and gas coverage here.
From the Colorado Oil and Gas Conservation Commission (Todd Hartman):
The Colorado Oil and Gas Conservation Commission has required operators of a wastewater injection site in Weld County to make changes to their well and adjust their disposal activities after determining actions at the location are potentially related to low-level seismic activity nearby.
On June 23, the COGCC directed NGL Water Solutions DJ LLC* to stop disposing wastewater into the well for a 20-day period while the agency worked with the operator and a team of University of Colorado researchers to determine whether deep injection at the site may be tied to recent seismic activity detected within the general vicinity. Following a 3.2 magnitude event on May 31, seismometers placed by CU recorded other small earthquakes, including one of magnitude 2.6 on June 23.
Since the shutdown, the COGCC has further analyzed data associated with the injection well, as well as seismic data recorded by a local network of instruments placed and maintained by CU geophysicists. While seismic activity in the area around the well continued during the shutdown period, it occurred at a lower energy level, according to the CU researchers.
Flow rate tests conducted by NGL indicated a high permeability zone near the bottom of the well that created a preferred pathway for injected wastewater. As a result of the findings, NGL, with approval and oversight from the COGCC, has plugged the basement of the well from a depth of 10,770 feet to 10,360 feet in order to seal off the preferential pathway and to increase the distance between the zone of injection and “basement” rock. These measures are expected to mitigate the potential for future seismic events.
Beginning Friday, July 18 the COGCC will allow NGL to resume limited injections, at lower pressures and lower volumes, under continued seismic monitoring, to ensure the facility is operating safely. Specifically, the operator will be permitted to inject at an initial maximum rate of 5,000 barrels per day with a maximum pressure of 1,512 psi. After 20 days, the maximum injection rate may be increased to 7,500 barrels a day at the same pressure.
Continued use of the injection well will be reviewed and may be halted if seismic events within a 2.5-mile radius of the well occur at or above a magnitude of 2.5 – the U.S. Geological Survey’s default threshold for displaying seismic events. CU geophysicists will continue to monitor the location, and the COGCC has required NGL to install a permanent seismometer near the well to allow for real-time monitoring. The company is also required to provide access to the monitor and all its data to the COGCC and any third parties authorized by the agency.
“We are proceeding with great care, and will be tracking activities at this site closely,” said Matt Lepore, director of the COGCC. “We’re moving slowly and deliberately as we determine the right course for this location.”
The COGCC is also reviewing a potential violation of the operator’s permitted injection volumes. The matter remains under investigation and any further information on possible enforcement would be contained in a Notice of Alleged Violation from the agency. Such a determination could result in financial penalties against the company.
The well, SWD C4A, is located east of the Greeley-Weld County Airport. It was permitted by COGCC in March 2013 and injection began in April of 2013.
More oil and gas coverage here.
From The Grand Junction Daily Sentinel (Dennis Webb):
Garfield County commissioners on Monday approved an oil and gas wastewater injection well near Battlement Mesa after the company responded to concerns that it could trigger earthquakes.
Duke Cooley, senior geologist at Ursa Resources, told commissioners there’s been no correlation between oil and gas injection wells and earthquakes in northwest Colorado’s Piceance Basin.
The Battlement Concerned Citizens group and the Battlement Mesa Service Association, a homeowners group for the unincorporated community, had raised the seismic issue amid mounting concern about an apparent correlation between oil and gas injection wells and earthquakes in several states. Last month, the Colorado Oil and Gas Conservation Commission suspended operation of an injection well in Weld County after a 3.4 magnitude earthquake struck in the Greeley area May 31, followed by smaller quake in June.
“It was a wake-up call. It was the first seismic event there in 30 years,” Doug Saxton of Battlement Concerned Citizens told Garfield commissioners.
He cited what he said is a lack of adequate earthquake monitoring by the U.S. Geological Survey.
“Nothing under 4.0 (magnitude) really gets their attention,” Saxton said.
He said the agency’s closest monitoring site is 75 miles from Greeley, and the nearest to Battlement Mesa is in the Paradox Valley. He called for the installation of monitoring equipment in the Battlement area and for Ursa to cease injection activity if a quake occurs.
But Cooley said a local monitoring station isn’t necessary because Geological Survey equipment can detect quakes of less than 1 magnitude hundreds of miles away.
Garfield County already has 60 approved injection wells, and injection has occurred in 26 of them since 2013, according to the county’s oil and gas liaison, Kirby Wynn. Saxton said Ursa’s would be the seventh within 10 miles of Battlement Mesa.
Cooley said seismic activity occurs where there has been geological folding, which in the case of the Piceance Basin is around its margins.
He also said quakes can occur when water is added that reduces friction along a fault plane where geological compression is occurring, in places like Greeley and Oklahoma. The Piceance Basin, by contrast, is now undergoing geological relaxation after previously having been “folded up,” he said.
Garfield County has surface authority over injection wells but the state oil and gas commission regulates technical “downhole” aspects of the wells such as injection pressure. Lindy Gwinn of Grand Junction, who consults for the industry, told Garfield commissioners Monday, “I can assure you they turn them down when they are not technically correct and there is any risk.”
She noted that the commission recently did just that in Mesa County. In 2012 it turned down a proposal for an injection well southeast of Grand Junction out of concern it could contaminate ground and surface water due to its shallow depth, and possibly induce earthquakes at the U.S. Department of Energy’s uranium mill tailings disposal site a few miles away.
That well would have been less than 2,000 feet deep. Ursa’s would be more than a mile deep.
In agreeing to approve the well, Garfield Commissioner Mike Samson said, “The COGCC, they kind of go over these injection wells with a fine-tooth comb. … I have faith in the COGCC and their very strict regulations that they have.”
Commissioner Tom Jankovsky agreed, and said if seismic activity did occur in the area, the county would ask companies to cease all injections until the cause could be determined.
He also encouraged Ursa to install pipelines to the injection well as soon as possible to reduce truck traffic. Ursa officials indicated they hope to do that soon, and that reduced traffic resulting from being able to inject wastewater rather than otherwise dispose of it would be one of the benefits of the well.
Said Monique Speakman, who supports the proposal and lives on the property where the well will be operated, “It’s going to eliminate truck traffic, noise, dust levels.”
Battlement Mesa resident Mary Haygood said she had been concerned about both the truck traffic and seismic aspects of the well, but told Ursa officials Monday, “You have allayed my fears somewhat by your explanation and I thank you for that.”
Ursa already has spent $2 million to drill the well. It needed to do that to do testing required by the oil and gas commission before it can approve the well. The agency is continuing to review the proposal.
More oil and gas coverage here.