March 32, 2014* Newsletter


Options for Hydraulic Fracturing Wastewater Storage and Treatment  

 

Photo of fracking fluid storage pit
Image Obtained From http://blogs.nicholas.duke.edu/thegreengrok/drilling-and-fracking-and-the-environment/

Yes, fracking again! In past newsletters we have discussed hydraulic fracturing (fracking) in terms of its methodology, its potential here in North Carolina, and regulatory issues associated with fracking operations. One aspect of fracking that we have not discussed in detail is the treatment and disposal of the waste fluids that are generated during the hydraulic fracturing process. This month we will focus on these methods, and provide a brief explanation of why they are necessary.  


In this issue:
  • Examining Options for Fracking Fluid Treatment and Storage 
  • New Rules for the Clean Water Act     
  • Pyramid is Awarded a 3-Year NCDOT contract  
 
 
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Why Are We Concerned About Wastewater? 

 

The EPA has published documents indicating that the wastewater generated from fracking can contain chemicals that are potentially harmful to humans or the environment. Some of these materials are generated naturally within the formation and others are used as additives by the oil exploration company. Therefore, it is essential to develop efficient ways to treat and dispose of these fluids.
Schematic showing a wastewater injection well  
Image obtained from www.npr.org

What Are Some of the Methods That Are Currently Being Used?

 

1. Underground injection wells - This is a method where a well is constructed to a depth significantly below the drinking water aquifer to zones in the subsurface that are isolated and overlain by relatively impermeable materials (i.e. bedrock).  Wastewater from the fracking process is then injected into the deep well, and the fluids disperse and diffuse deep underground.  The figure to the right provides a schematic of an injection well.

 

2. Wastewater discharges to treatment facilities - Aside from injection wells, on-site treatment and disposal of fluids is typically not permitted, so wastewater can be removed from the site and taken to separate facilities that are specifically designed to treat the fluids.

 

3. Disposal ponds and impoundments - Some facilities will temporarily store discharge fluids and waste in tanks or pits on-site (see photo at the beginning of this article).  These pits must be properly lined, and only offer a temporary solution to storing the fluids.  Wastewater is then typically either injected or treated (see above), or potentially recycled and re-used (see below).

 

4. Recycling of wastewater - Some discharge fluids/wastewater can be re-used in the hydraulic fracturing process.  While this is not a treatment option, this recycling can minimize the amount of fluid that needs to be treated and disposed of at off-site facilities.

 

A more detailed description of these processes, as well as links to a number of other EPA and other fracking-related documents, can be found here: http://www2.epa.gov/hydraulicfracturing.

* April Fools!
 
New Rules for Clean Water Act Protections Slated

According to the Wednesday, March 26 Wall Street Journal, the Obama Administration has proposed new rules "aimed at putting more small bodies of water and wetlands under Clean Water Act protections". The WSJ continues with "The rules were unveiled by the US Environmental Protection Agency and the U.S. Army Corps of Engineers and attempt to reverse the effects of the Supreme Court's 2006 Rapanos ruling, which narrowed the government's ability to enforce pollution laws for smaller streams and bodies of water."

 

The following information was provided by the Drovers CattleNetwork (03/25/2014):

 

'Once published in the Federal Register, the agencies will accept public comment for 90 days.  In a news release, the EPA says the proposed rule will clarify jurisdiction over streams, wetlands and other waters that have been a subject of confusion for decades. It will apply to all Clean Water Act programs, but the EPA says it will not protect any new types of waters that have not historically been covered under the Act.

 

"We are clarifying protection for the upstream waters that are absolutely vital to downstream communities," said EPA Administrator Gina McCarthy. "Clean water is essential to every single American, from families who rely on safe places to swim and healthy fish to eat, to farmers who need abundant and reliable sources of water to grow their crops, to hunters and fishermen who depend on healthy waters for recreation and their work, and to businesses that need a steady supply of water for operations."

 

While the EPA Administrator told reporters Tuesday the proposal does not expand the CWA, the agency's own economic analysis shows an increase positive jurisdictional determinations of 3 percent under the CWA Section 404 program. The analysis broadly applied the 3 percent increase assumption to other permitting programs. Additionally, the analysis claims the proposed rule will impact an additional 1,332 acres nationwide under Section 404 and says the benefits will outweigh the costs by a ratio of approximately 2:1. Some have questioned the low estimates EPA cites in the analysis saying the agency has far underestimated the impacts it will have nationwide.  

 

According to EPA, the proposed rule clarifies that under the CWA:

  • Most seasonal and rain-dependent streams are protected;
  • Wetlands near rivers and streams are protected;
  • Other types of waters may have more uncertain connections with downstream water and protection will be evaluated through a case specific analysis of whether the connection is or is not significant.

The agencies say the proposed rule is based on a report titled 'Connectivity of Streams and Wetlands to Downstream Waters: A Review and Synthesis of the Scientific Evidence'. The report, at the time the rule was proposed, has not been finalized and is still undergoing peer review. Agricultural groups have questioned how the agency can purport to base a proposed rule on a report that has not been finalized.

 

Senator David Vitter (R. LA) the top Republican on the Senate Environment and Public Works Committee said the EPA was undertaking "one of the most significant private-property grabs in U.S. history" that would "give the federal government outright permitting authority over virtually any wet area in the country".'

 

This ruling may have significant impacts on North Carolina environmental regulations, such as the Jordan Lake rules, where upstream water bodies are regulated based on their impact to larger bodies downstream.  

 

For more information on this issue, go to http://water.epa.gov/lawsregs/guidance/wetlands/CWAwaters.cfm

 
 
Need to know what's underground?
  • Geologic Hazards
  • Geotechnical Drilling
  • Landfills
  • USTs
  • Geologic Mapping
  • Groundwater

News and Conferences
 
NCDOT Contract Awarded to Pyramid: Pyramid has been awarded a new, 3-year contract with the NCDOT for GeoEnvironmental Services throughout the state of North Carolina.  This award is an indication of our successful work for the state, and our innovative approaches to site assessments.  Congruent to our previous contract, our work will include geophysical surveys, UST closure services, Preliminary Site Assessments, and other environmental sampling and testing.

Pyramid will be attending the following upcoming conferences.  Stop by our booth and see us!

1. Environment Virginia Symposium - Lexington, VA, April 8-10
http://www.vmi.edu/Content.aspx?id=10737419910

2. Carolinas Air Pollution Control Association (CAPCA) Spring Conference - Asheville, NC, April 16-18 http://capca-carolinas.org/conferences/2014-spring/

3. NC Bar Association Environmental Section Annual Meeting - Asheville, NC, May 15-17 http://environmentenergyandnaturalresourceslaw.ncbar.org/calendar/annual-meeting-may-15-17
March Joke

 



 
 
Dear ,

Pyramid maintains the most up-to-date knowledge of the industry's regulations, changes, and events, and we will continue to pass this information along to YOU.

 

Once again, thank you to all our loyal customers, vendors, and employees for your continued support . Pyramid can't do it without you.



Sincerely,
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DOUG CANAVELLO
Pyramid Environmental