Launch of National Mapping Project Designed to Show Possible Impacts of Oil and Gas Drilling on Well Water
FOR IMMEDIATE RELEASE
US Map of Suspected Well Water Impacts
Contacts: Brook Lenker, Executive Director, FracTracker Alliance, (717) 303-0403; and Samantha Malone, Manager of Science and Communications, FracTracker Alliance, (412) 802-0273
May 1, 2013 – The US Map of Suspected Well Water Impacts is a project that will attempt to piece together recent complaints of well water quality impacts that people believe are attributed to unconventional gas and oil operations. Research has demonstrated potential risks to ground and drinking water posed by faulty well casings, surface spills, and hydraulic fracturing. From across the country, in areas where gas and oil development is occurring, accounts of possible well water contamination have been reported but not been collected all in one place – yet. The FracTracker Alliance and cooperating organizations are providing that opportunity.
Inspired by other “crowd-sourced” data and mapping projects, this project aims to collect ongoing stories, narratives, and data from individual homeowners living on well water near drilling operations and map the general location of these reports online. The first version of the dynamic map (shown below) is available at www.fractracker.org/usmap.
Once received, submissions will be reviewed to the extent possible by cooperating researchers and organizations. Not all reported cases of water contamination, however, have been or will be able to be substantiated. According to Brook Lenker, Executive Director of FracTracker Alliance:
The reports we are collecting are not necessarily indisputable evidence that drilling has contaminated drinking water sources. Some accounts are irrefutable. Others remain unsubstantiated, but that doesn’t mean the well owner isn’t experiencing serious problems. Even where proof may be elusive, perception of risk can tell us much about an issue and the level of concern by the community. This information will likely help to identify pre-existing problems or conditions that were not previously well known. Such outreach is needed to permit citizens, local agencies, and others to work together to address pre-existing concerns, improve local regulations or standards, conduct proper baseline testing and monitoring, and make informed decisions.
As unconventional natural gas and oil extraction expands internationally, an Internet-based project like the US Map of Suspected Well Water Impacts can help to share on a global scale how people in the U.S. view – and may be impacted by – unconventional drilling. If everyone contributed their stories, the public’s understanding of gas and oil extraction’s impacts on well water could expand dramatically.
Anyone wishing to submit their story should visit www.fractracker.org/usmap or call (202) 639-6426. A complete list of current project partners is available on the website.
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Getting the Waters Tested Our Educational Series (WV)
New Line of Courses on the Topic of Hydraulic Fracturing
Fact Sheet: Methane Gas Migration and Mitigation
Methane gas has been a “hidden” problem in Northeastern Pennsylvania. The gas is typically associated with wetlands, bogs, landfills, coal-producing formations, natural saline seeps, some glacial deposits, and gas storage areas. Because of the development of the Marcellus Shale, the presence of methane gas and the potential for methane gas migration is a growing concern. Methane is a colorless, odorless gas that is lighter than air. Natural gas is mostly methane (70 – 90 % CH4), carbon dioxide (0 to 8 % CO2), plus other gases. The other gases may include ethane (C2H6), propane (C3H8), butane (C4H10), and hydrogen sulfide (H2S) as well as small amounts of helium.
Methane gas is highly flammable between a lower explosion limit (LEL) of 5.53 percent by volume in air and an upper explosion limit (UEL) of 15 percent. These percentages are equivalent to a methane concentration of 50,000 and 150,000 parts per million (ppm) in air. The minimum concentration level at which the gas has the potential to explode is called the lower explosive limit (LEL); below the LEL level there is not enough gas to cause an explosion. Above the UEL, there is inadequate oxygen to fuel combustion, but if the space is vented and the gas concentration drops below the UEL, the gas can become diluted enough to explode (it would require an ignition source). Methane is not considered toxic, but it is an asphyxiant at a concentration of over 50 percent in air (it displaces oxygen). Therefore, the primary risks for methane would be asphyxiation in a confined or poorly vented area or a potential explosion hazard. As a safety measure, the natural gas industry adds mercaptans to the produced methane gas that enters the pipeline and your home. The mercaptans produce a very pungent odor so that gas leaks will be noticed, but unprocessed methane gas tends to have NO ODOR. It is critical to note that some unprocessed methane gas may contain long chain hydrocarbon molecules that can create an odor.
From the available data in the Citizen Groundwater/Surfacewater Database, it would appear that the natural background level of methane in private wells in Northeastern Pennsylvania ranges from not detectable or trace levels to over 28 mg/L. You may suspect the presence of methane gas in your water if you hear a “gurgling noise”, sputtering at the tap, the water has a lot of gas bubbles, is effervescent or fizzy.
Note: If the pumping level of water in your well starts to fall below your pump intake, ordinary air may mix with the water and produce similar symptoms. When in doubt, contact a professional to determine the nature of the observed gas.
For more on this topic – Methane Gas Migration
Citizen Groundwater and Surfacewater Database
The Baseline Water Testing Process It is NOT Just About Getting a Sample
The Baseline Water Testing Process It is NOT Just About Getting a Sample
By Brian Oram, Professional Geologist
Carbon County Groundwater Guardians
Published in March ONG Marketplace
We have had the opportunity to witness a wide range of practices that have been called baseline testing. We have seen a team of 4 professionals working for the EPA in Dimock, Pennsylvania, take 4 to 5 hours to collect one water sample and we’ve seen a single sampler with virtually no training take 15 minutes to purge and sample a private well with no field measurements or even gloves. The potentially negative impacts of this wide variation in sampling techniques and experience is compounded by the lack of field documentation and a quest for that “single” list of parameters. This approach will make for great future lawsuits and media stories, but does little to generate the reliable data required by professionals, scientists, regulatory agencies, and the public.
The key elements to effective baseline testing should include:
a. A selection of parameters and indicators that meets the regional environmental conditions and addresses the historic and proposed activities and practices in the region and not just a simple list provided or recommended by a regulatory agency;
b. chain-of-custody practices with internal and external quality control (QC) and quality assurance (QA) that start and end with the certified laboratory working with a trained third-party professional;
c. field documentation, including notes, field measurements, and photos, that includes a summary of the existing condition of the private water distribution system;
d. field sampling done by third-party samplers that are either licensed professionals or specifically trained in the standard operating procedures of the certified testing laboratory, plus these individuals must have a working understanding of common water treatment systems; and
e. prior to releasing the data, the certified laboratory must validate and review the data, plus work with the third-party professional to confirm or check the reliability and validity of the results.
As part of our outreach efforts, we have been able to review baseline testing conducted by multiple entities. Here is just one example for your consideration.
The sample was collected by a non-professional, third party sampler, tested by a certified testing laboratory, and then given by a natural gas company to a private well owner. The sample was collected only a few weeks before drilling started. The well owner was given a report with the raw data, spike and recovery analysis, surrogate testing results, field data sheet, and a full listing of the methods and the laboratory certifications. When the homeowner, a royalty owner, asked if there was any problems, we provided them a list.
1. The field conductivity was reported at 250 uS/cm, but the certified laboratory data had reported a total dissolved solids of 1500 mg/L;
2. The cation and anion mass balance was out of balance by over 25 %;
3. Total metal values less than dissolved metal values; and
4. The well had arsenic at over 10 times the primary drinking water standard, but this was never flagged as a problem for the private well owner.
This data is not scientifically valid and does not make sense. It may be certified, but it is wrong and there is no time to collect another pre-drill sample.
As professionals, we have the obligation to attempt to get it right and to properly inform citizens when a problem is identified. It is critical that we implement a process to screen the water quality data before it is distributed to the community. To build trust, the data must be provided to the private well owner in a format they can understand.
Baseline testing can be a valuable tool for the environmental professional, gas drilling industry, and community. With proper planning, baseline testing can used to determine where additional documentation or monitoring is needed and to determine the location of systems or wells vulnerable to influence.
In our opinion, baseline testing is not just part of an environmental audit, but in many ways, it is an opportunity for the company and consultant to build trust in the community. At the same time, the company is attempting to mitigate risk by documenting pre-existing conditions, the data collected during this baseline assessment should be used to make critical decisions related to the use of best management practices and build trust in the community through education and outreach.
Baseline testing is a community issue. We ALL live downstream and we need to solve problems as a community. This is a great opportunity to make a positive difference in your host community. Options for informational well water testing.
Support Groundwater Education in Pennsylvania and Consider Scheduling an Education Workshop for Your Community – just email bfenviro@ptd.net
Carbon County Groundwater Guardians is a 501(c)(3) IRS approved nonprofit, volunteer organization and your donation is tax deductible to the extent allowed by law.
Webinar to examine stray shale-gas migration into groundwater
Sampling stray gas that is bubbling up through surface water.
UNIVERSITY PARK, Pa. — Investigations into natural gas from shale development migrating into groundwater will be the focus of a free, Web-based seminar offered by Penn State Extension.
To be presented at 1 p.m. on March 21, “A Geochemical Context for Stray Gas Investigations in the Northern Appalachian Basin,” is part of a monthly series of one-hour webinars.
According to presenter Fred Baldassare, senior geoscientist with ECHELON Applied Geoscience Consulting, as shale gas exploration and development has increased over the past five years, stray gas migration in groundwater has become a hot topic. He will discuss the various sources of methane and the need to review each case individually to determine its origin.
“The occurrence of methane in aquifer systems represents a natural condition in many areas of the Appalachian Basin,” he said. “The origin can be the result of microbial and thermogenic processes that convert organic matter in the aquifer strata to methane, and to lower concentrations of ethane and heavier hydrocarbons in some areas of the basin.
“Or it can result from the progressive migration of hydrocarbon gas over geologic time from the source and/or reservoir to the aquifer.”
But in some instances, Baldassare pointed out, the stray gas that occurs in the aquifer and manifests in private water supplies can be the result of gas-well drilling.
“That happens where pressure combines with ineffective casing cement bonds to create pathways,” he said. “Alleged incidents of stray gas migration must be investigated at the site-specific level and must include isotope geochemistry to determine gas origin and diagnostic evidence to determine a mechanism of migration.”
Presented by Penn State Extension’s Marcellus Education Team, the monthly natural-gas webinars usually are offered from 1 p.m. to 2 p.m. on Thursdays. Upcoming webinars will cover the following topics:
–April 24: Utica Reservoirs — Mike Arthur, Penn State professor of geosciences and co-director of the Penn State Marcellus Center for Outreach and Research.
–May 16: Shale Energy Development’s Effect on the Posting, Bonding and Maintenance of Roads in Rural Pennsylvania — Mark Gaines, Pennsylvania Department of Transportation Bureau of Maintenance, Operations and Roadway Management, and Tim Ziegler, Penn State Larson Transportation Institute, Center for Dirt and Gravel Road Studies.
–June 20: Royalty Calculations for Natural Gas from Shale — Jim Ladlee, associate director, Penn State Marcellus Center for Outreach and Research.
Previous webinars, publications and information also are available on the Penn State Extension natural-gas website (http://extension.psu.edu/naturalgas), covering a variety of topics, such as Act 13; seismic testing; air pollution from gas development; water use and quality; zoning; gas-leasing considerations for landowners; gas pipelines and right-of-way issues; legal issues surrounding gas development; and the impact of Marcellus gas development on forestland.
Registration for this webinar is not necessary, and all are welcome to participate by logging in to https://meeting.psu.edu/pscems . For more information, contact Carol Loveland at 570-320-4429 or by email at cal24@psu.edu .
< http://news.psu.edu/story/267750/2013/03/08/webinar-examine-stray-shale-gas-migration-groundwater >
Carbon County Groundwater Guardians is a 501(c)(3) IRS approved nonprofit, volunteer organization and your donation is tax deductible to the extent allowed by law. Well water testing and educational program.
The Potential for Waterborne Spread of MRSA
One Bad Bug
By Kelly A. Reynolds, MSPH, PhD , Associate Professor at the University of Arizona College of Public Health
The emergence and increased prevalence of the ‘superbug’ bacterium known as MRSA (methicillin-resistant Staphylococcus aureus), has raised questions as to the routes of transmission related to disease. Reports of MRSA infections in the general population and evidence of the bacteria surviving in wastewater, tap water and drinking water biofilms creates alarm in the public and warrants a discussion of whether or not MRSA infections occur from tapwater exposures.
Read more (pdf)
REMINDER – water webinar January 30 on baseline water testing for gas drilling
Bryan Swistock <brs@psu.edu>
The next webinar in our Water Resources series will be Wednesday, January 30, 2013 from noon to 1 PM (EST). More details below. Hope you can join us!
When: Wednesday January 30, 2013 from noon to 1 PM
Topic: A Study of Pre-Drilling Groundwater Quality in 700 Water Wells and Springs in North Central Pennsylvania
Speaker: Jim Clark, Water Resources Extension Educator, Penn State Extension, McKean County
Where: The live webinar can be viewed at https://meeting.psu.edu/water1
Webinar Description:
Jim Clark, a Penn State Extension Water Resources Extension Educator based in McKean County, PA, will discuss the results of a study of approximately 700 private drinking water supplies covering eight counties in North Central Pennsylvania. Clark has been a Penn State Extension Educator for 24 years and has completed private water supply testing projects in McKean County in 2006 and Cameron County in 2011. This current water testing effort was administered by the Headwaters Resource Conservation and Development Council and the Clearfield County Conservation District. A grant from the Colcum Foundation funded the project. The Penn State Extension Water Resources Team partnered to offer a Water Test Report Interpretation Workshop in each of the eight participating counties and offered individual consultations for many of the private water supply owners who participated in the study. The combined workshop evaluation results and the results for the 21 parameters tested on the private water supplies will be shared and discussed.
About the Presenter:
Jim Clark is a native of Elmira, New York. He holds an Associate Degree in Animal Husbandry from Alfred State College and a Bachelor of Science and Masters in Arts and Teaching from Cornell University. He has been an Extension Educator with Penn State Extension since July of 1989, based in McKean County, Pennsylvania. He is Co Chair of the Penn State Water Resources Team.”
How to Participate
The live webinar will occur from noon to 1 PM and is accessible at: https://meeting.psu.edu/water1
You can access this webinar simply by signing in as a “guest”.
Taped versions of each webinar in the series are available at: http://extension.psu.edu/water/webinar-series/past-webinars
If you have not registered for past water webinars, please visit the following website to register so we can keep you updated about future webinar offerings: http://extension.psu.edu/water/webinar-series/schedule/registration.
If this will be your first webinar, you may want to test your
computer and internet connection for compatibility at:
https://meeting.psu.edu/common/help/en/support/meeting_test.htm
Additonal Upcoming Webinars
Additional webinars on various water resources topics will be offered each month – generally on the last Wednesday of the month. A full schedule of webinars for the next 12 months can be found at: http://extension.psu.edu/water/webinar-series/schedule.
The February webinar will be offered on 2/27/13 at noon on Innovations in Youth Water Education by Jennifer Fetter, Water Resources Educator, Penn State Extension, Dauphin County.
Please pass this along to anyone that might be interested in attending these webinars.
Other Training and Presentations on Common Water Quality Problems and baseline water testing.
EPA recommends radon testing in January
Protect your family from the second leading cause of lung cancer in the U.S.
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PHILADELPHIA (January 8, 2013) – January is national Radon Action Month and the
U. S. Environmental Protection Agency encourages everyone to test their homes for radon. January is an especially good time to test homes and schools because windows and doors are closed tightly and people spend more time indoors.
Unsafe levels of radon can lead to serious illness. The Surgeon General has warned that radon is the second leading cause of lung cancer in the United States with an estimated 21,000 deaths a year. Only smoking causes more lung cancer deaths. By making simple fixes in a home or building people can lower their health risks from radon.
Radon is a colorless, odorless, tasteless gas; so testing is the only way to know if radon is present in your home or school. Test kits are available in home improvement centers and hardware stores and costs approximately $20. The kits are simple to use with easy testing and mailing instructions.
Make the commitment to protect your family. Test for radon in air / water . Fix the problem if you find elevated radon levels. Save a life!
For more information about radon and radon testing see: http://www.epa.gov/radon/
Radon and other air/water testing kits
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More Educational Materials Private Well Owner Outreach on Radon
Rep. White calls on state, federal authorities to investigate DEP
Breaking: PA Rep. Jesse White Challenges DEP Over Deceptive Marcellus Shale Water Testing Practices
by Iris Marie Bloom
November 2, 2012
protectingourwaters.wordpress.com/2012/11/02/breaking-pa-rep-jesse-white-challenges-dep-over-deceptive-marcellus-shale-water-testing-practices/
An explosive press release issued yesterday by Pennsylvania State Representative Jesse White alleges formally, based on a deposition by a high-ranking PA DEP official, what many residents of “shale country” in Pennsylvania have been saying for years: that PA DEP water testing data is manipulated in order to avoid disclosing shale gas drilling water impacts to those affected.
The Pittsburgh Post-Gazette reported the story 20 minutes ago, “Lawmaker Challenges PA DEP’s Reporting of Gas Well Water Safety.” Read Post-Gazette reporter Don Hopeys’ article here. [ http://pipeline.post-gazette.com/news/archives/24893-lawmaker-challenges-pa-dep-s-reporting-of-gas-well-water-safety ]
Due to the riveting importance of this call for investigation of PA DEP’s integrity, and due to the severe health impacts experienced by some of those whose water has been fouled by shale gas drilling processes in Pennsylvania, we are publishing Rep. Jesse White’s press release in full: [ http://pahouse.com/PR/046110112.asp ]
White calls on state, federal authorities for investigation of DEP over deceptive Marcellus Shale water-quality testing practices
Testimony by DEP lab chief reveals possibility of intentionally undisclosed public health risks from Marcellus Shale gas drilling
HARRISBURG, Nov. 1 – State Rep. Jesse White, D-Allegheny/Beaver/Washington, today called for state and federal law enforcement agencies to investigate the Pennsylvania Department of Environmental Protection for alleged misconduct and fraud revealed by sworn testimony given by a high-ranking DEP official.
White said he received a letter and corresponding documents highlighting the sworn testimony of DEP Bureau of Laboratories Technical Director Taru Upadhyay, who was deposed in a lawsuit alleging nearby natural gas drilling operations contaminated drinking water supplies in Washington County, causing serious health issues. In the deposition, Upadhyay said that the DEP was clearly aware of water impacts from Marcellus Shale drilling, but no notices of violation were filed – a violation of the state’s Oil & Gas Act.
Of more critical concern to Pennsylvania residents, according to White, was that the deposition revealed that the DEP developed a specialized computer-code system to manipulate the test results for residents whose water was tested by the DEP over concerns of adverse effects from gas drilling operations.
According to the transcripts, which have been filed as exhibits in a related lawsuit in Washington County Court of Common Pleas (Haney et al. v. Range Resources et al., Case No. 2012-3534), the DEP lab would conduct water tests using an EPA-approved standard, but the DEP employee who requested the testing would use a specially designed ‘Suite Code’ which limits the information coming back from the DEP lab to the DEP field office, and ultimately to the property owner.
The code in question, Suite Code 942, was used to test for water contamination associated with Marcellus Shale drilling activities, yet specifically screens out results for substances known to be hazardous and associated with Marcellus Shale drilling. Similar codes, Suite Code 943 and 946, are also used by the DEP in similar circumstances; both of these codes omit the presence or levels of drilling-related compounds.
As a result, if Suite Code 942 is applied, the report generated for the homeowner by DEP only includes eight of the 24 metals actually tested for: Barium, Calcium, Iron, Potassium, Magnesium, Manganese, Sodium and Strontium. The homeowner would not be given results for: Silver, Aluminum, Beryllium, Cadium, Cobalt, Chromium, Copper, Nickel, Silicon, Lithium, Molybdenum, Tin, Titanium, Vandium, Zinc and Boron.
“This is beyond outrageous. Anyone who relied on the DEP for the truth about whether their water has been impacted by drilling activities has apparently been intentionally deprived of critical health and safety information by their own government,” White said. “There is no excuse whatsoever to justify the DEP conducting the water tests and only releasing partial information to residents, especially when the information withheld could easily be the source of the problem. This goes beyond incompetence; this is unlawful and reprehensible activity by the DEP. If these allegations are true, there needs to be a thorough and objective investigation to determine if someone belongs in a jail cell.”
White continued: “I am not releasing this information to hurt Marcellus Shale development in Pennsylvania, but to help ensure the reality matches the rhetoric. The Marcellus boom was built on the assumption that the DEP was competent and capable of balancing the positive impacts of the industry with its job of keeping residents safe and secure, but we now know that simply isn’t the case. Like most of us, I want the Marcellus Shale industry to succeed by doing things the right way, so it is crucial to find out what exactly the DEP was up to. If the system is indeed rigged, we must do everything in our power to root out corruption and restore public confidence in our ability to have an honest conversation with one another about developing a responsible energy policy for Pennsylvania.”
Due to the strong possibility of unlawful conduct, White is calling on the U.S. Attorney’s office, the Environmental Protection Agency, state Attorney General Linda Kelly and any other appropriate law enforcement agency to pursue an investigation of the DEP to discover the scope and depth of this scheme to withhold important information from Pennsylvanians. White is also sending a letter to the National Environmental Laboratory Accreditation Program (NJ-NELAP), to investigate whether the DEP’s conduct and practices violated the accreditation standards for the DEP laboratories. If accreditation standards were violated, White is requesting the DEP’s accreditation be stripped, rendering the agency unable to conduct and certify its own tests.
White said he is sending a letter to DEP Secretary Michael Krancer seeking a summary of how many constituents in his legislative district, which includes communities with high levels of Marcellus Shale drilling activity, had DEP tests done using Suite Codes 942, 943 or 946. White also intends to make a blanket request on behalf of his constituents that DEP release the full testing data directly to the individual property owners in question.
Any Pennsylvania resident who received water quality test results from the DEP should look for the number 942, 943 or 946 as a ‘Suite Code’ or ‘Standard Analysis’. White encouraged anyone with questions to contact his district office at 724-746-3677 for more information and noted that the property owner should be entitled to the complete testing results from DEP.
“This isn’t a technicality, and it isn’t something which can be ignored,” White said. “We are talking about people’s health, safety and welfare. The sworn testimony from inside the DEP about a scheme to withhold vital information about potential water contamination is truly alarming. An investigation is necessary to answer these serious allegations.”
The letter sent to Rep. White alerting him of these issues can be found at:http://www.scribd.com/doc/111821139
The deposition of TaruUpadhyay, technical director of PA DEP Laboratory can be found at:http://www.scribd.com/doc/111821978
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Take Action: Speak Up
Beyond absorbing this important news, this is the time to write your letters to the editor and otherwise speak in public, including direct confrontation at public meetings, to demand an immediate halt on on high-volume hydraulic fracturing in Pennsylvania. Residents and workers’ health is being hurt, yet the industry is keeping toxic secrets, with help from far too many friends in high places.
Not to be forgotten in our outrage over PA public officials’ betrayal of public health: the big picture. Fracking accelerates climate change. Even as we post this, over 1.6 million people are without power from mega-storm Sandy; the death toll continues to rise. Extreme weather events are occurring, and will occur, more frequently and with greater severity due to climate change. Climate change is the greatest single threat to all of our health. Whether you drink water from a well that could be impacted — and you now know you are not protected by either our state or federal authorities — or whether you breathe air already impacted by the hundreds of thousands of diesel-powered truck trips, flowback waste emissions, compressor station emissions and pipeline leaks inherent in fracking; or whether you want our people to stop escalating the ravages of global warming, now is the time to speak up and demand change.
Cabot’s Methodology Links Tainted Water Wells to Gas Fracking
www.businessweek.com/news/2012-10-02/cabot-s-methodology-links-tainted-water-wells-to-gas-fracking
By Mark Drajem and Jim Efstathiou Jr. on October 02, 2012
Methane in two Pennsylvania water wells has a chemical fingerprint that links it to natural gas produced by hydraulic fracturing, evidence that such drilling can pollute drinking water.
The data, collected by the U.S. Environmental Protection Agency, are significant because the composition of the gas –its isotopic signature — falls into a range Cabot Oil & Gas Corp. (COG) had identified as that of the Marcellus Shale, which it tapped through hydraulic fracturing, or fracking.
“The EPA data falls squarely in the Marcellus space” established by Cabot’s scientists, said Rob Jackson, an environmental scientist at Duke University. That evidence backs up his findings linking gas drilling and water problems in the town of Dimock, applying the very methodology that Cabot established to try to debunk it, he said. Read more
EPA Completes Drinking Water Sampling in Dimock, Pa.
EPA News Release
Contact: Terri White white.terri-a@epa.gov 215-814-5523
PHILADELPHIA (July 25, 2012) – The U.S. Environmental Protection Agency announced today that it has completed its sampling of private drinking water wells in Dimock, Pa. Data previously supplied to the agency by residents, the Pennsylvania Department of Environmental Protection and Cabot Oil and Gas Exploration had indicated the potential for elevated levels of water contaminants in wells, and following requests by residents EPA took steps to sample water in the area to ensure there were not elevated levels of contaminants. Based on the outcome of that sampling, EPA has determined that there are not levels of contaminants present that would require additional action by the Agency.
“Our goal was to provide the Dimock community with complete and reliable information about the presence of contaminants in their drinking water and to determine whether further action was warranted to protect public health,” said EPA Regional Administrator Shawn M. Garvin. “The sampling and an evaluation of the particular circumstances at each home did not indicate levels of contaminants that would give EPA reason to take further action. Throughout EPA’s work in Dimock, the Agency has used the best available scientific data to provide clarity to Dimock residents and address their concerns about the safety of their drinking water.”
EPA visited Dimock, Pa. in late 2011, surveyed residents regarding their private wells and reviewed hundreds of pages of drinking water data supplied to the agency by Dimock residents, the Pennsylvania Department of Environmental Protection and Cabot. Because data for some homes showed elevated contaminant levels and several residents expressed concern about their drinking water, EPA determined that well sampling was necessary to gather additional data and evaluate whether residents had access to safe drinking water.
Between January and June 2012, EPA sampled private drinking water wells serving 64 homes, including two rounds of sampling at four wells where EPA was delivering temporary water supplies as a precautionary step in response to prior data indicating the well water contained levels of contaminants that pose a health concern. At one of those wells EPA did find an elevated level of manganese in untreated well water. The two residences serviced by the well each have water treatment systems that can reduce manganese to levels that do not present a health concern.
As a result of the two rounds of sampling at these four wells, EPA has determined that it is no longer necessary to provide residents with alternative water. EPA is working with residents on the schedule to disconnect the alternate water sources provided by EPA.
Overall during the sampling in Dimock, EPA found hazardous substances, specifically arsenic, barium or manganese, all of which are also naturally occurring substances, in well water at five homes at levels that could present a health concern. In all cases the residents have now or will have their own treatment systems that can reduce concentrations of those hazardous substances to acceptable levels at the tap. EPA has provided the residents with all of their sampling results and has no further plans to conduct additional drinking water sampling in Dimock.
For more information on the results of sampling, visit: http://www.epa.gov/aboutepa/states/pa.html .