The majority of FracTracker’s posts are generally considered articles. These may include analysis around data, embedded maps, summaries of partner collaborations, highlights of a publication or project, guest posts, etc.

From Spectra Energy Watch: Gas Exec ‘Willing to Engage in the Debate’

Reposted with permission from Mike Benard, Spectra Energy Watch

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Spectra Energy Watch recently conducted an email interview / conversation with Ben Wallace. Ben Wallace is Chief Operating Officer (COO) of PENNECO, an oil and gas exploration company headquartered in Westmoreland County, Pennsylvania.

PENNECO owns interests in more than 1,200 wells in 5 states, according to its website, and most of its wells are hydraulically fractured.

‘A Belief That Industry Will Not Answer Direct Questions’

In an exchange of three e-mails with Spectra Energy Watch’s blog, Wallace noted: “… I sense that one of your great frustrations is a lack of access to industry – or a belief that the industry will not answer direct questions…”

Yes – industry will not answer direct questions. It prefers platitudes like this one from Spectra Energy: Safety is our franchise. It’s what we ‘do.’

The gas industry wants it both ways. For example, on one hand it says hydraulic fracturing has been in use for 60 years with no adverse effects.

This is a half truth at best. Hydraulic fracturing has evolved as a technique over several decades. Slickwater, high-volume hydraulic fracturing began in the mid-to-late ’90s in Texas; and there is ample evidence that it has adverse effects on water and air.

Despite the gas industry’s claim of 60 years of hydraulic fracturing, it then claims to be a “nascent industry” that needs time to grow in states like Pennsylvania and New York (without a severance tax).

What is so hard about telling the truth about hydraulic fracturing?

PENNECO COO Ben Wallace was sincere in answering questions directly, but many of his responses illustrate how wide the gulf (no pun intended) is between the gas industry and those who experience the adverse effects of high-volume, slick-water hydraulic fracturing from shale gas wells.

For example, here are excerpts from Wallace’s comments:

  • “I personally have no objections to injecting frac fluid into oil and gas bearing reservoirs and I, as a private citizen, am quite comfortable with the regulations in force by the individual states regarding this activity. Hydraulic fracturing presents no threat to clean safe drinking water.”
  • “It does not bother me that a Marcellus fracture treatment uses 20 tons of chemicals diluted in 1,000,000 gallons of water and that the slurry is injected into a natural gas bearing formation multiple thousands of feet below any fresh water aquifers isolated by steel casing and cement.”
  • “I would not support requiring closed loop systems to eliminate plastic lined ponds nor would I support installing vapor recovery units on tanks. Again, the relative risk is minimal and it only serves to increase the cost of energy to the consumer.”
  • “In general, I do not support restrictions on drilling beyond those that currently exist. Sufficient zoning regulations are already in place within individual communities to govern this activity.”

Ben Wallace, like many of his industry colleagues, speaks in absolutes with complete confidence that only the ‘perfect world’ model exists in gas industry operations.

Then he offers comments like this:

I suggest that all those who are opposed to drilling and to the extractive process cease using energy. Turn of [sic] the cell phones. Turn of [sic] the lights. Power down the laptops. Park the cars. Turn of [sic] the air conditioner. Eat raw food. Stop using refrigeration. Until the critics are willing to do that, they are hypocritically pointing the finger of blame. The energy industry simply provides the product to which our society is complicity addicted.

The defect of that kind of emotional venting is that it can fly back in your face – tit for tat. Gas execs argue that the hydraulic fracturing fluid – chemo frack fluid, laced with toxic chemicals – is benign. Great. Drink it yourself.

In fact, PENNECO COO Ben Wallace is on the record in a letter to the U.S. Environmental Protection Agency (EPA) suggesting (carefully) that, “hydraulic fracturing chemicals in dilute solution” is comparable to Coca-Cola.

He agrees, of course, “it would be foolish to drink frac fluid.”

Okay, we got carried away. Don’t drink the frac fluid. But what about leadership by example from the gas industry? If “Study after study has found hydraulic fracturing to be safe,” as Wallace says in his letter to the EPA, why is this blog still unable to identify executives (senior managers) who have such operations on their property, near their home?

Ultra NIMBYs of the Gas Industry

As Wallace acknowledges: “I do not have a shale gas drilling rig on my property.” Nor is there a frac pond on his property.

Imagine gas industry execs with hydraulic fracturing operations near their homes who step up and acknowledge that they believe so strongly in the inherent safety of shale gas extraction that they “live” the principle, so to speak.

The great shame of the gas industry is that its execs want these wells on YOUR property, but not THEIR property. Gas industry senior managers are the new ultra NIMBYs.

Public Opinion Turning Against Gas Industry

No wonder Pennsylvania Governor Ed Rendell, while declaring himself a “protector” and a “good spokesman” for the gas industry, worries that “public opinion is starting to turn [against the gas industry] because I don’t think the industry’s done a great job of public relations.”

While the industry and Penneco’s Ben Wallace declare hydraulic fracturing to be safe, the “protector” and “good spokesman” for the gas industry admits there are “five challenges” – all of them environmental.

The five “challenges” of shale gas extraction, in Rendell’s own words:

  1. How to divert the millions of gallons of water that are necessary to operate the drilling?
  2. How to prevent gas migration?
  3. What do we do with the frac water – how do we dispose of it or beneficially reuse the frac water?
  4. What about the infrastructure? What about the roads with the heavy truck traffic that’s coming in and out of shale drilling areas – mostly in our northern tier itself which is a fairly undeveloped part of Pennsylvania? And
  5. How do we protect the natural beauty of the state? Pennsylvania was given by the Lord an incredible bounty of natural and wild lands. There are more natural and wild acres in Pennsylvania than the entire states of Connecticut and Rhode Island put together. And Pennsylvanians feel very strongly about that. We’re a great sportsmen’s state – fishing and hunting; and our wild and natural areas are very treasured.

Rendell made his remarks in a roundtable discussion with gas and oil execs in Dallas on March 25. If the “protector” of the gas industry in Pennsylvania acknowledges multiple risks to the environment, why can’t the gas industry?

Links and Resources

Earthworks says, Gas leasing: if you’re going to do it, do it right

Reposted with permission from Nadia Steinzor, Earthworks, OGAP

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When the landman comes knocking, it’s tempting to open the door wide. The promises made can be beguiling: fast cash, payments for years to come, and hardly any change on your property. Just sign up now…

But harsh reality can set in fast. Maybe it’s a road built right behind the house or through a crop field. Or barrels of toxic chemicals stored next to a drinking well. Perhaps the wastewater pond wasn’t fenced, so thirsty livestock got sick. And when the royalty check arrives, it’s far smaller than expected.

Across the Marcellus Shale region and beyond, there’s abundant evidence that a rush to drill without strong regulations causes environmental and health problems. Less well-known is how the rush to lease in the absence of information, legal advice, and safeguards is harming many landowners, as well as their neighbors and communities.

For more than a decade, OGAP has worked to inform property owners about their rights and what to consider before signing a lease — most recently at landowner workshops in Ohio and Pennsylvania.

Citizens turned out to hear how leases can contain legally binding guidelines for precisely how and where gas development occurs. They learned from OGAP staff about what’s happening across the Marcellus region and nationwide. Attorney and leasing expert Bob Miller detailed what protective leases can look like, and why we all benefit when they exist. Petroleum accountant Mary Ellen Denomy explained the “fine print” of gas payments and how to make sure that companies pay landowners what they deserve. These presentations provide key information for anyone considering leasing or interested in leasing practices.

OGAP is all too aware of the many problems wrought by oil and gas development—and works much too hard to prevent and solve them—to be in the business of encouraging leasing. But we also know that because many people make the choice to lease, it’s far preferable to have it done in a way that protects land, water and air quality, and health, and which doesn’t leave impacted landowners financially high and dry.

Let’s face it—gas companies rarely do the right thing voluntarily on their own. They usually have to be pushed (and pushed) by policymakers, landowners, and the public to drill responsibly. This is the only way to keep citizens in the driver’s seat, ready to put on the brakes, as the gas development train rushes down the tracks.


If you would like to contribute a blog post like this to FracTracker, please contact us at malone@fractracker.org, 412-624-9379.

 

New Violation Datasets at our DataTool

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Three new datasets have been added to our DataTool: Utah Oil and Gas Violations, West Virgina Spills, County by Year, and West Virginia Spills Data.

The Utah dataset contains information including violation type, and oil and gas related injury and fatality records.  The West Virgina Spills, County by Year dataset is a set up to be easy to visualize, however, those interested in analyzing the West Virginia data itself will want to look at the West Virginia Spills Data dataset.

Earlier, we posted a separate WV Marcellus and O&G Violation by County dataset. I suspect that the West Virginia data is incomplete, due to the relatively small number of records.  There are 463 records of spills and 259 other violations since January 1, 2000, for a total of 722 offenses.  Compare that to the dataset from Pennsylvania, where there are over 9,300 violations recorded, and those are all since January 1, 2007.

Prezi Presentation – Origins and Purpose of FracTracker

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Are you interested in knowing why we at CHEC started this hairbrained project with the Foundation for PA Watersheds and Rhiza Labs to develop FracTracker? Check out the presentation below to learn more:

If you’re having trouble viewing the presentation, click play at the bottom of the screen twice. Prezi will move you from one “slide” to the next. And if you’re still having trouble, visit Prezi to learn more.

Pennsylvania Violation Data

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The Pennsylvania Department of Environmental Protection (DEP) responded to our request for oil and gas violation information with a list of 9,370 violations from January 1, 2007 through September 30, 2010. That works out to almost seven oil and gas violations statewide per day. Certainly, the DEP has been taking its job very seriously in trying to regulate the oil and gas industry within the Commonwealth.

At the same time, it makes one wonder what violations occur that the DEP is not aware of.

A Closer Look at the Numbers

The 9,370 violations came from a total of 3,661 wells. Of that total, 2,075 violations are flagged as Marcellus Shale, from 592 distinct wells. And of the Marcellus wells total, there were 1,497 violations from 399 wells that were flagged as horizontal wells. All horizontal wells in this dataset are also Marcellus Shale wells.

That means that for non-Marcellus Shale wells, there were 7,295 violations from 3,069 wells, for a frequency of just 2.38 violations per well. The highest frequency of violations per well was 37, for API# 131-20020, a horizontally drilled Marcellus Shale well in the town of Washington in Wyoming County, PA.

In terms of average violations per well, the reported data indicates 2.38 violations per non-Marcellus well, and 3.51 violations per Marcellus well, for an overall average of 2.56 violations per well.

This graph shows the mean number of violations per well type in
Pennsylvania.  This is based on a list of 9,370 violations provided by the PA
DEP from 1-1-2007 through 9-30-2010.  Please note that this reflects only wells
where violations occurred,not every well of this type within Pennsylvania.

Please keep in mind that all of these values only represent wells that have violations, and therefore it should not be construed that the average Marcellus well will have three and a half DEP violations. This certainly does, however, raise the question of why an offending horizontal Marcellus Shale well would have an average of 1.37 more violations per well than its non-Marcellus counterpart, but it does not provide the answer. Perhaps it reflects that more can go wrong on horizontal Marcellus Shale wells, or that they are more tightly regulated. Perhaps a handful of individual sites like the one in Washington have so many violations that they skew the data in some way. There could be numerous scenarios to explain the discrepancy.

Obtaining Geographic Location Information

To date, the primary means of linking oil and gas data to a geographic location has been using the dataset compiled by PASDA, which includes the information of over 123,000 oil and gas locations within the state. Unfortunately, the PASDA data was insufficient for the violation data, as there were thousands of records that did not match. I have reduced that number significantly to by adding the list of known permits since 2007 (which also includes geographic information) to the PASDA list. This process created duplicate entries, which was worked around by obtaining the average longitude and average latitude of each API number.

This process does not eliminate any errors inherent in the data. In one example that I looked at, there were three listings for one unique well number, one of which was off by 0.3 degrees of latitude, or about 20 miles. In this scenario, it would be tempting to correct the one to conform to the other two, but in reality, it isn’t clear which one is correct. And for that reason, auditing the dataset—which is now over 128,000—for errors is not especially productive. For the moment, it is sufficient to say that there are some errors present in the location data, which are hopefully minimal in scope.

Forced Pooling FAQs

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FracTracker’s blog and DataTool are at their strongest when people contribute to them and comment on the content. In line with that mission, Leslie Avakian of ProtectMyRightsPA has provided the following frequently asked questions on the issue of forced pooling. (Please keep in mind that these are the opinions of ProtectMyRights, not CHEC.) If there are topics or events you would like to see posted on this blog or if you want to share a great snapshot you created on the DataTool, just send us an email with the details.

Q&A — Forced Pooling – Forced Drilling & Use by Right – Zoning Exemptions

ProtectMyRightsPA – September 27, 2010

Why are so many people upset about forced pooling?

Forced pooling would allow natural gas companies to take gas from underneath landowners who have not agreed to it. It would apply in situations where enough of the land around a property is leased. The definition of “enough” is being negotiated. For landowners who choose not to sign a lease, rights to control their property would, in effect, be turned over to their leased neighbors, the State and the gas company. Forced pooling violates the PA Constitution which protects PA citizens’ private property rights. It would be a state law taking control of private property and offering it for sale to a selected industry. Is this not Socialism? These important concerns, coupled with the possibility of legislation being developed without reasonable opportunity for proper public input, gives citizens good reason to be upset.

Is forced pooling necessary?

No. These shale gas plays aren’t free-flowing “pools.” The gas is in the pores of the shale, that’s why it needs to be fractured. Forced pooling in PA’s unconventional shales is a way for gas companies to acquire acreage without landowner consent and without having to make upfront lease payments in areas where they intend to drill, and to expand the acreage they can drill under. It is a way to get around negotiating price with landowners, a way to acquire gas rights at below-market rates, and a way to force people into leases or lease terms they don’t want.

Can property owners be protected from gas theft without forced pooling?

Certainly. The right answer to the risk of having gas taken from property owners without consent or compensation is not to strip property owner rights and force them to accept drilling under their property and the extraction of all their gas. The right answer is to enact legislation to protect the private property rights expressly granted by the PA Constitution.

There are many possible ideas. For example, legislators could develop protections such as fracturing setback requirements, monitoring and stiff penalties to assist landowners beyond the existing legal remedies for subsurface trespass, property damage and theft of gas through fracturing across mineral rights boundaries. If needed, legislators could protect the mineral rights of neighboring landowners through pro-rata compensation formulas based on the permeability of the shale and the location of the nearest operating gas wells. These formulas could be used to pay landowners who have chosen not to lease, but are having some of their gas drawn out unavoidably by a well in the area. Legislators should open these issues to public dialog for ideas on how to best address these concerns, not simply implement forced pooling.

Why doesn’t forced pooling protect the environment?

Forced pooling is not the same as gas well spacing requirements. Gas well spacing requirements can exist completely independent of forced pooling, and vice-versa. Forced pooling does not protect the environment. And the only spacing requirements publicly suggested so far have been arbitrary distances. They do not help determine appropriate places for gas drilling. They simply spread gas wells evenly throughout all land areas in the state – through neighborhoods, cities, next to schools and shopping centers – as long as they are spaced a minimum distance apart.

Is there precedent for forced pooling in PA?

Not really. The Conservation Law includes forced pooling below the geologic strata called the Onondaga Horizon — this is beneath the Marcellus, Utica and Newark Basin shales. Forced pooling as per the Conservation Law has never been applied and has never been challenged in court, and it expressly excludes all strata above the Onondaga. It also differs in many ways from the forced pooling currently proposed. Furthermore, a key purpose of the Conservation Law is to protect correlative rights when gas or oil is extracted from a common pool. The notion of a common pool does not similarly apply to the Marcellus. Correlative rights can be protected in other ways without violating private property rights.

Why would forced pooling be an illegal taking of property?

The PA Constitution contains no provision that allows for a forced pooling law. Further, Article I, Section 1 of the Constitution states that PA citizens have certain indefeasible rights, including the rights to acquire, possess, and protect property. Forced pooling would be an illegal legislative taking of private property.

Is gas drilling already a “use by right” and exempt from local zoning?

No. Gas drilling is not a “use by right” or exempt from local zoning in PA. This was affirmed in Feb. 2009 by the PA Supreme Court in two landmark decisions (Huntley vs. Oakmont and Range Resources vs. Salem). These rulings clearly articulate that the traditional land use and community planning functions of zoning ordinances are not pre-empted by the Oil and Gas Act and are governed by the PA Municipal Planning Code. Only gas drilling processes and practices are governed by the Oil and Gas Act.

But Beware – industry material widely circulated in Harrisburg and elsewhere has repeatedly and incorrectly stated that drilling is already a use by right and pre-empts all local zoning. This is false – the Gas Act does not supersede local zoning for municipal planning purposes, only for drilling processes and techniques. One industry strategy has been to seek a language adjustment to “clarify” legislative intent – but this is really an attempt to fundamentally change the legislative intent – and should not be implemented.

Why are PA citizens upset about use by right (zoning exemptions) for oil and gas?

Taxpayers in local communities have invested significant time and money developing community plans and zoning ordinances to provide for the orderly growth and development of their communities. Use by right for gas drilling would override local government and make gas drilling a “principal permitted use” in every zoning district in the State of PA. Gas wells are noisy, brightly lit, operate 24/7/365, and require thousands of truck trips for each multi-well pad. It is not an insignificant land use. Municipal planning was developed to manage land use, is not superseded by the Gas Act and should not be compromised.

If use by right (zoning exemption) legislation is passed, or the Gas Act language modified to effectively strip communities of their local powers, it will spur litigation by citizens, this time in the Federal court system on the grounds that it is an abuse of the State’s “police powers” in that it fails to promote/protect the health, safety and welfare of PA citizens and directly interferes with and substantially disturbs PA citizens’ use and enjoyment of their property.

Drilled Oil and Gas Locations in Utah

By Matt Kelso – Data Manager, Center for Healthy Environments & Communities (CHEC), University of Pittsburgh Graduate School of Public Health

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A new dataset of drilled oil and gas locations in Utah has been added to FracTracker’s DataTool (click on the snapshot of that dataset to the left to see more detail). This dataset was pursued in order to obtain more data from other shale gas fields throughout the United States. However, despite the fact that there are shale gas fields in the state, a correspondence with Utah’s Oil and Gas Permitting Manager/Petroleum Geologist Brad Hill has led to the revelation that there are currently no shale gas wells in the state. On the other hand, he indicated that most vertical and horizontal wells in Utah undergo some amount of hydrofracturing process, making the data relevant to our pursuits here at FracTracker.

Dissemination of Information

From the perspective of trying to obtain meaningful data about oil and gas operations, the Utah Division of Oil, Gas and Mining is wonderful resource. Just to give an indication of the breadth of the scope of what they have to offer, go to the Oil and Gas Well Log Search, set the three boxes to “API Well Number”, “LIKE”, and “43” (which is Utah’s state code), and you get a list of wells in the state, complete with associated well logs that can be viewed and downloaded. In Pennsylvania, you would have to file a Right to Know claim to get access to some of these documents. The small sample of scanned source documents that I have looked at in Utah has included typewritten notices from the 1960’s. One of the files had over 30 pages of documents.
In addition to having an abundance of information on their site, the workers that I have dealt with at the Division of Oil, Mining, and Gas have been extremely useful in obtaining additional information. My initial query to Don Staley of that department was replied to within 20 minutes, and he contacted the Petroleum Geologist of his own volition to make sure that the information that was given to me was clear. They have set the standard for public service by a governmental regulatory agency, as far as I am concerned. Texas was also helpful, but only some of their information is available free of charge.

Geocoding Issues

Most people are familiar to some extent with the basic longitude and latitude system. The grid that the two values combine to make, known as a graticule, allows for the identification of unique locations on the planet. It is not, however, the only means of identifying unique locations.

A system used by Utah and by many of the other western states is known as the Public Land Survey System, or PLSS. This system was conceptualized by Thomas Jefferson and dates to the Land Ordinace Act of 1785. In essence, it creates a series of six-mile wide horizontal bands known as Townships, and six-mile vertical bands called Ranges. These intersect to create a six-by-six mile box (see image right), with a name of something like “Township 5 North”, “Range 8 West.”  This is further divided into 36 sections, each one-mile square. This can be further subdivided into quarters, and then quarters of that, so that a location could be recorded as the northeast quarter of the southeast quarter of Township 5 North, Range 8 West, Section 5 (or NE1/4 of SE1/4 of T5N, R8W, Sec. 5 for short).

This discussion is relevant here because in parts of the Utah Oil and Gas website, location information comes up in this format. To obtain the locations for the drilled wells in the state, it required a convoluted process of finding a map of the 1-by-1 mile section boxes, then finding the midpoint of those boxes with GIS tools, and finally correlating those points to the original dataset. Since the midpoint of a 1-by-1 mile box is about 0.70 miles to each corner, that is the margin of error for the location of these datapoints. For most uses, that shouldn’t matter.

After completing these conversions, I have found elsewhere on the site latitude and longitude data, as well as Universal Transverse Mercator (UTM) values, which is yet another means of finding unique places on Earth. I have not yet determined whether that has all of the information from the dataset that has been posted, but if so, then more accurate location information will follow shortly.

Is a Severance Tax in the Future for Pennsylvania?

By Samantha Malone, MPH, CPH – Communications Specialist and DrPH student, Center for Healthy Environments & Communities (CHEC), University of Pittsburgh Graduate School of Public Health

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Last week the PA House of Representatives voted in support of a severance tax of 39 cents for every thousand cubic feet of natural gas extracted. This proposed bill now awaits its fate in the Senate. Governor Edward Rendell recently sent a letter to Senate leaders urging them to move forward on the bill.

“A week ago the Pennsylvania House of Representatives voted to impose a severance tax on natural gas drilling in Pennsylvania. Since that time, in spite of the expressed commitment made by the you in the fiscal code, your comments, and those made by your staff, do not offer a shred of evidence that you have any intention of living up to this commitment you made to put the severance tax to a vote in the Senate before you adjourn the session.” Read more.

Industry representatives have stated that the proposed tax is too high and would hinder the extraction process in the Commonwealth. Supporters of this tax, however, feel it is necessary to counter the costs to local infrastructure and protect the environment and public health.

A Look Back at the Clearfield Blowout – Public Health Preparedness Considerations

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Clearfield Blowout, June 2010
Photo credit: PA DEP

By Samantha Malone, MPH, CPH – CHEC Communications Specialist and DrPH Student, University of Pittsburgh Graduate School of Public Health

It came at a conspicuous time; on June 3, 2010 a Marcellus gas well blew out in Clearfield County, PA – less than two months after the BP Oil Spill in the Gulf (and before that spill was capped).

Luckily, the Clearfield blowout did not kill or injure workers or spill five million gallons into the ocean, but it does raise significant public health preparedness and environmental health questions.

The Pennsylvania Department of Environmental Protection (PA DEP) released a report stating that untrained EOG Resources personnel and improper control of the well were the cause of the blowout that released wastewater and methane gas into the atmosphere for 16 hours. EOG also failed to notify the DEP about the incident until several hours after it began.

The Clearfield well site in question is located in the center of PA off of I-80 (see map below).
[image removed]
Figure 1. The red square indicates multiple violations that occurred in one geographic location, the Clearfield blowout. Click on “i” to learn more about each square (record). (The map used to be private and visible on the DataTool only to members of CHEC, but it can now be seen by anyone.)

Many concerns and questions are associated with a blowout of this type:

  1. Not including the danger to workers from the initial blowout, what if the gas being released had ignited?
  2. What if the site had not been in the State Game Lands and been in a more populated or possibly urban area like Lawrenceville, a neighborhood in the city of Pittsburgh?
  3. What if an explosion had occurred that caused the wastewater and gas to be released for much longer?
  4. How can emergency responders be better prepared to handle issues of this magnitude?
  5. How can communication channels be improved to reduce the amount of time between incident and proper response?

On the part of emergency responders, some progress is being made. CHEC continues to receive reports that more and more local first responders, including volunteer firefighters, are being trained in PA and WV to deal with potential accidents and blowouts on well sites. Additionally, the PA DEP has hired a team of responders throughout the state who are no more than five hours away from any drill pad.

Read the DEP’s full report on the Clearfield gas well blowout. [link removed]

Water Contamination Studies

By Samantha Malone, MPH, CPH – CHEC Communications Specialist and BCHS Doctoral Student, University of Pittsburgh, Graduate School of Public Health

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Water Contamination Potential

When the ‘new’ methods for gas extraction first appeared on the horizon in Pennsylvania, many citizens expressed concern that their water could become contaminated by the hydraulic fracturing process used to obtain natural gas from the Marcellus Shale. At the same time, the natural gas industry’s PR group, the Marcellus Shale coalition, claimed that “hydrofracking has [a] safe record and spurs [the] economy.” Preliminary research conducted by the Agency for Toxic Substances and Disease Registry (ATSDR) and the U.S. EPA in Pavillion, Wyoming suggest that a portion of citizens’ concerns might be warranted. (To learn more, read the PDFs numbered 2, 3, and 4 at the end of this post.)

Some researchers believe that gas extraction cannot be done without negatively impacting water quality due to the likelihood of well casings leaking over time (Dusseault, 2000). See excerpt below:

The consequences of cement shrinkage are non-trivial: in North America, there are literally tens of thousands of abandoned, inactive, or active oil and gas wells, including gas storage wells, that currently leak gas to surface. Much of this enters the atmosphere directly, contributing slightly to greenhouse effects. Some of the gas enters shallow aquifers, where traces of sulfurous compounds can render the water nonpotable, or where the methane itself can generate unpleasant effects such as gas locking of household wells, or gas entering household systems to come out when taps are turned on. Methane from leaking wells is widely known in aquifers in Peace River and Lloydminster areas (Alberta), where there are anecdotes of the gas in kitchen tap water being ignited. Because of the nature of the mechanism, the problem is unlikely to attenuate, and the concentration of the gases in the shallow aquifers will increase with time. (Dusseault, 2000)

Updating PA’s 1989 Cement Regulations

In an attempt to reduce the risk that the increased drilling in PA would negatively impact groundwater and drinking water supplies, the PA Environmental Quality Board published its proposed rulemaking measures to update existing state requirements for many of the processes involved in natural gas drilling, including: casing and cementing the well, monitoring and inspections, and plugging of oil and gas wells. (A significant portion of the existing regulations in PA that dictate water supply replacement and how gas wells are constructed were created in 1989.)

Whether natural gas drilling – when done properly – can contaminate well water or the acquifer from which well water is obtained is a significant research question. Public health would suggest that this is an imperative issue considering the number of violations sited against companies drilling in Pennsylvania by the PA DEP. (See map below that shows Marcellus Shale wells drilled since 2007 and violations as of September 22, 2010. To view an individual record, click the “i” in the toolbar below the map and then click on the record about which you would like to obtain more information.)

[image removed]

The potential impacts that the natural gas industry could have on water quality and public health are some of the major reasons that the U.S. EPA is conducting a $1.9 million study on hydraulic fracturing, including a life-cycle analysis of the process. In order to better understand the relationship between drilling products and water resources, the EPA recently sent a letter to select hydraulic fracturing service providers that requests they release the constituents of their fracturing fluid, as well as specific information about other industry processes.

References and Additional Publications

  1. Dusseault MB. 2000. Why Oilwells Leak: Cement Behavior and Long-Term Consequences. Society of Petroleum Engineers Inc.
  2. ATSDR Health Consultation, Pavillion, WY – Evaluation of Contaminants in Private Residential Well Water
  3. EPA, Pavillion, WY – Expanded Site Evaluation – Analytical Results Report
  4. EPA, Pavillion, WY – Conceptual Site Model