UPDATE August 31 2014 The Denton Recond-Chronicle reported of the Tex Well study...”According to the UTA study, which was published in Environmental Science & Technology journal, “The maximum concentration of arsenic detected in a sample from an active [gas well] extraction area was almost 18 times higher than both the maximum concentration among the nonactive/reference area samples and historical levels from this region.”
Currently, the Environmental Protection Agency’s maximum contaminant limit for arsenic is 10 parts per billion. Anything over that is considered unsafe. The UTA team found that 29 out of 90 water wells exceeded the EPA standard. Methanol and ethanol, two chemicals used in hydraulic fracturing, were also detected in 29 percent of water samples, according to the study.”
http://pubs.acs.org/doi/abs/10.1021/es4011724 abstract reads… (I boldfaced for emphasis)
“Natural gas has become a leading source of alternative energy with the advent of techniques to economically extract gas reserves from deep shale formations. Here, we present an assessment of private well water quality in aquifers overlying the Barnett Shale formation of North Texas. We evaluated samples from 100 private drinking water wells using analytical chemistry techniques. Analyses revealed that arsenic, selenium, strontium and total dissolved solids (TDS) exceeded the Environmental Protection Agency’s Drinking Water Maximum Contaminant Limit (MCL) in some samples from private water wells located within 3 km (1.86 mile) of active natural gas wells. Lower levels of arsenic, selenium, strontium, and barium were detected at reference sites outside the Barnett Shale region as well as sites within the Barnett Shale region located more than 3 km from active natural gas wells. Methanol and ethanol were also detected in 29% of samples. Samples exceeding MCL levels were randomly distributed within areas of active natural gas extraction, and the spatial patterns in our data suggest that elevated constituent levels could be due to a variety of factors including mobilization of natural constituents, hydrogeochemical changes from lowering of the water table, or industrial accidents such as faulty gas well casings.”
As a concerned citizen, I want to act upon this study….
There are 281 water wells within 5 miles of the ATT Cowboys Stadium which is about 1,000 feet from my home. I have the addresses of all those citizen and municipal water wells through a city open records request on the MSD near my home and hope to get communication info of this study out to at these identified people that are already identified. Chances are thay they ARE within 2 miles of drilling and need to at least take arsenic sampling if they are drinking or watering their yards/crops/animals. Who can help me with the postage costs?
I’ve been the most anxious to view this report as I’m a friend on the Tex Well Facebook and expected the release of this report last July…now I’m advised by Tex Wells to meet with them in person before I attempt to contact the up to 300 water well owners within a five mile area of my home.I’ve contacted the mayor of Pantego since THEY R on well water…ouch!!!I expect our Arlington Water Department to keep their head in the sand and only care about surface water quality for their municipal treatment drinking water plants…but someone has yet to tell me that our surface waters are NOT fed from failed casing risked ground water supplies.I am aware that we pipe into Lake Arlington (our supply) from at least CedarCreek and Richland Chambers. Of course there is fracking near there. Yesterday on the news, a Corsiciana gas well casing blew up at a drill site which is near Richland Chambers Reservoir. I need reassurance that ground water doesn’t ever communicate with surface water that could be piped into Lake Arlington.I also need assurances that any possible failed casings UNDER Lake Arlington won’t ever migrate up into Lake Arlington.Lastly, I know I’ll never get accident proof assurances from surface drill site spills…we’ve already had a driller called Quicksilver spill (due to a clean out valve left open on a tank that overfilled) from the Ft Worth side into our Lake Arlington a few summers ago.