Author: CHEJ Intern

By Anabelle Farnham, Communications Intern
October 13, 2021
Ever since I can remember, I enjoyed science in school because it helped me to explain the world with concrete answers. It was a way of illuminating universal truths, and providing objective views of the world….right? 
Though I have abandoned all hope of becoming a STEM major, since coming to college I have classes that challenge the ways I think about science and the weight I put into the answers “science” provides.
Most recently, I learned about something called the Threshold Theory that made me think of CHEJ. The Threshold Theory originates from Earle B. Phelps and H. W. Streeter, two engineers who developed this theory while working in the Ohio River and published it in 1958. The theory goes like this: nature, in this case a river or body of water, has the ability to absorb contamination up to a certain point. It is after this tipping point that we consider harm is being done and the “contamination” become “pollution.” This tipping point, the point when water/nature is unable to purify itself and the contamination we are putting into it becomes harmful, has been coined “assimilative capacity.”
I had not realized until reading about this theory how much I used the assumption of assimilative capacity in my life. It can not only apply to the way we consider land, but also how we consider our bodies. The EPA has set limits on many chemicals and the concentrations at which they can be released into the environment, operating under the assumption that both the environment and people’s bodies can absorb toxicity up until a certain point. 
Under this theory, the question we ask is: what is this tipping point of chemicals at which we are causing harm? However, this question assumes that all chemicals follow the same model of the Threshold Theory when this theory cannot be universally applied. 
For example, certain chemicals, such as those categorized as “endocrine disruptors” do not fit into the Threshold Theory. These chemicals can mimic our hormones, which constitute a delicate balance in our body, and can send big signals with small changes. In the case of these chemicals, a small amount can be more harmful than a large one because our body is unable to detect the difference between an endocrine disruptor or a hormone. Chemicals like these defy the Threshold Theory. 
Learning about the Threshold Theory has made me reflect more on what truths I take as givens and when these assumptions might be blinding me to something bigger. It’s not that I used to think all science is good and now I think all science is flawed; it’s that I know more clearly that the questions we ask are going to determine the answers we find. Science is a tool that we can use to help each other live healthy, full, abundant lives, but the assumptions we bring into our scientific studies will create limits for how useful science can be. It really comes down to a very basic but powerful question: What stories will we use science to help us tell?
 
Inspiration for this blog comes from Max Liboiron’s book Pollution is Colonialism, which I highly recommend if you are interested in thinking more about the way methodologies in science have the power to create or minimize harm and violence in the world.
See also A Study of the Pollution and Natural Purification of the Ohio River by Streeter and Phelps for more on the origins of the Threshold Theory
Photo Credit: David Howell/Quebec Science. Max Liboiron is an indigenous Canadian scientist who does work on plastics pollution on the island of Newfoundland. 
 

Cancer-Causing Waste Along The Texas Eastern Pipeline in Pennsylvania Still Exists
By: Sharon Franklin, Chief of Operations
Jim Ryan of the Perry County Times recently reported that it has been over 30 years since the public first learned that the Texas Eastern Transmission Corporation in Pennsylvania buried industrial fluids containing the carcinogen polychlorinated biphenyls (PCBs) along the natural gas line, which could represent thousands of tons of contaminated soil.
Unfortunately, the PCBs still have not been fully cleaned up and there isn’t an estimate for when that will be completed. Max Bergeron, a spokesperson for Enbridge, the owner of the Texas Eastern gas pipeline, stated, “We have undertaken PCB remediation efforts at (the Shermans Dale) facility in accordance with applicable regulations and are committed to continuing efforts supporting the health and safety of the communities in which we live and work.” However, according to the state of Pennsylvania’s Department of Environmental Protection (DEP), Enbridge is supposed to conduct PCB cleanups as it makes updates to its facilities, and that companies that previously owned the Texas Eastern pipeline were supposed to do the same, but did not completely remove all the PCB-contaminated soil. 
It has been confirmed that there are nineteen Texas Eastern PCB waste sites across Pennsylvania, according to DEP. When Bergeron was asked about how much PCB soil was removed and how much cleanup was left to do along the Texas Eastern line in Pennsylvania, he did not specifically answer those questions. 
 Why is this being reported now?  It is being reported now because it is the 30th anniversary of the 1991 Texas Eastern PCB settlement, but work on the natural gas pipeline has been ongoing in central Pennsylvania for several years. It came to the attention of the Perry County Times when a resident asked about regulatory violations at the Shermans Dale facility. They found the alleged violations on EPA’s website where it was noted the Shermans Dale Texas Eastern site had three violations in less than a year, including what appeared to be effluent runoff and emissions violations. However, EPA found no violations in their records, and Pennsylvania’s DEP said they were generated in error.
EPA spokesman Roy Seneca said in a May email that “We checked with our Water and (Resource Conservation and Recovery Act) enforcement staff and they are not aware of any direct EPA involvement with these events.  They believe this was likely handled by the state.” Pennsylvania DEP stated that the incidents only appeared as violations because of a glitch in how data is uploaded to the EPA website.  Sometimes if a large batch of data is uploaded, it can trigger paper violations in error. But the permit for Texas Eastern Shermands Dale under the National Pollutant Discharge Elimination System (NPDES) had no violations attached to it. “The records we have regionally and downtown don’t show violations,” John Repetz, Local Government Liaison, said, referring to DEP’s records in Harrisburg.
There are many other communities throughout the country that are facing issues such as these. While EPA says it should have been handled by the state, the state says something like it was an uploaded data issue to the EPA site, therefore it wasn’t a violation.  This leaves communities along the Pipeline asking “Why is there still cancer-causing waste along the Pennsylvania Texas Eastern Pipeline after 30 years and a settlement to cleanup PCBs in contaminated soil?”
Photo Credit: Jim T. Ryan/Perry County Times