Hydraulic fracturing, or fracking as it is more commonly known, involves complex labor and industry-intensive operation. A toxic potion consisting of millions of liters of water, sand, and a range of chemicals is carcinogenic is pumped into the ground at high pressure.
This forces fissures within the bedrock to fracture, releasing natural gas deposits held within to be released. The gas then escapes from high pressure to low pressure (drilled wells), where it is collected. And there are environmental consequences of fracking.
While this initially seems like a straightforward operation that may answer our energy woes, it is not nearly that simple. On the contrary, it, in fact, presents even larger problems, the most serious being its impact on precious water resources, without which we cannot survive.
The chemicals used in fracking operations vary between energy exploration companies and are typically not disclosed (which is in itself worrisome) but have been known to include diesel, which is in fact an illegal additive in fracking fluids in terms of the Safe Drinking Water Act in the US.
These chemicals, together with naturally occurring heavy metals and toxins, including lead, arsenic, mercury, barium, benzene, chromium, strontium, and radium, can leach or be forced out of the ground to contaminate groundwater sources, rivers, as well as private drinking water wells.
Toxic volatile organic compounds (VOCs) are also released into the atmosphere, posing a health risk to people who reside near fracking operations.
Furthermore, it is not uncommon for natural gas to escape into private drinking wells, where it not only poses a threat of contamination but other safety concerns too.
Methane gas has no odor, so it is not readily detectable. Consequently, if allowed to accumulate in a confined, unventilated area, it poses a real danger of causing an explosion or asphyxiating anyone exposed to it – both can be deadly.
These stray gases may also escape into the atmosphere. Considering that methane is more than 20 times more potent as a greenhouse gas than carbon dioxide negates any hype surrounding natural gas is a cleaner alternative ‘natural’ source of fuel.
Recent surveys conducted in the US have indicated that methane concentrations in drinking water wells situated within a kilometer of fracking sites were six times higher than normal. At the same time, ethane levels were up to 23 times higher, with propane gas being found in some wells.
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Squandering Water Resources
Hazards aside, there is also the issue of squandering limited water resources. The US Environmental Protection Agency (EPA) states that anywhere between 2-5 million gallons of water extract shale gas from each horizontal well drilled.
This water is typically extracted from local aquifers or surface water sources, such as local rivers. Depending on the size of the operation and the number of wells drilled, this can effectively amount to billions of gallons of water extracted from natural water sources to support fracking operations.
Extracting water from rivers impacts the water flow rate and can severely alter freshwater riverine ecosystems, both locally and downstream, impacting farmers and residents alike.
There may also be economic consequences due to losses incurred due to lost recreational and tourism potential of impacted rivers and dams or agricultural land becoming less productive.
The worst-case scenario is when the wells run dry – a situation currently occurring in Texas due to fracking.
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The billions of gallons of toxic fracking fluids pumped into the ground to force out the gas are recovered for ‘safe’ disposal. This contaminated sludge has to be deposited somewhere – it doesn’t simply disappear.
While energy companies are compelled to treat their fracking waste responsibly, environmental organizations and concerned residents fear that.
In most cases, the facilities available aren’t adequate to cope with the enormous volumes of contaminated wastewater and sludge generated.
An environmental disaster, such as Hurricane Sandy, could cause wastewater treatment plants to overflow, resulting in contamination of surface and groundwater sources.
Very often, the treated wastewater is pumped into the ground for disposal. Still, this process has been implicated as the cause of the increase in earthquakes experienced since it was initiated.
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The environmental impacts are not just limited to fracking operations. There are also indirect environmental and social impacts. Fracking brings with it a wave of industrial activity into normally quiet rural communities.
The land is cleared to construct new infrastructure in the form of access roads and well sites.
Heavy machinery is trucked in to drill and encase wells, pump fracking fluids, and extract gas from the wells. The toxic sludge byproduct of the process then needs to be trucked out and disposed of somewhere ‘safe.’ This requires a labor force, which needs to be housed.
Bang goes the quiet rural atmosphere as the trucks and machinery hurtle in, polluting the air we breathe, the soil we grow our crops on, and the water we and our livestock depend on for our very survival.
The land is scarred and devaluated, the environment is compromised, and the health and livelihoods of human communities that live there are threatened.
While some countries like France and Germany have outright banned fracking, alarmingly, despite the dangers, many countries around the world, including the US, UK, Ireland, South Africa, Australia, and New Zealand, have not.
It seems ludicrous that governments worldwide will allow energy companies to poison their water sources, yet this is exactly what is happening. Some things are more precious than oil and money – water is top of that list.
Only when all the rivers are poisoned and the wells run dry will they realize the error in their ways, but by then, it may be far too late.