Activity appears to be starting back up at the site of an injection well in Coitsville that's been shut down for years. 

It was all due to an incident that shook the Valley, and sparked a series of questions regarding safety of oil and gas waste-disposal.

On December 3, 2011, a 4.0 magnitude earthquake rattled people's houses, causing cracks in the foundation, walls and some roads. 

This was the largest of at least 11 earthquakes recorded in the Mahoning Valley that year. 

Several brine injection wells were shut down as a result, including the one in Coitsville. 

The site has been inactive for years. So why is work being done on the property now?

Members of the community were unsure what work was being done at the site, but immediately expressed concerns.

“I have 23 acres and we're wondering what they're going to do around there to disturb us,” said  Harold Maleski of Coitsville Township.We have farm animals and, if something gets into the water, that’s a big thing.

Silverio Caggiano, retired Youngstown battalion chief hazardous material specialist, has been following developments at the site for years. He worries the construction could pose a safety risk.

“That well has had a myritive of problems. Like I said, it's been blocked, it's leaked, it spewed chemicals out of its containment,” said Caggiano. “These wells do leak. And you got Purple Cat there with that beautiful lake. Is it leaking in there? Is it leaking into mckelvey lake? Where’s it leaking to?”

After residents reached out to 21 News with worries over new activity at the site of the well, we took their concerns to the township and state. 

Michael Kurilla, Coitsville Township zoning inspector, said he didn't know anything about the work being done at the site. In fact, he went down and visited the site, and was told that construction workers are renovating an injection line.

Kurilla was told the company doing the work is called SCE Environmental. Their social media presence says they do clean up work, but they also provide services for oil and gas companies. 

21 News  doesn't know which they're doing here for sure, but the well has recently changed hands from Bobcat Coitsville LLC, to Select Water Solutions. 

Select Water Solutions is a company that specializes in oil and gas wastewater. 

An ODNR representative said they were unaware of the work being done on the site, and work such as what was described to the zoning inspector would require a permit, which has not been issued. 

However, they were later informed that this work was routine maintenance and would need to do an in-person inspection to see what work is being done.

Caggiano said situations like these aren't unusual.

“ODNR doesn't know even though they are supposed to. They don't ever seem to know what's going on with these. In fact, 95% of the time, we're the ones telling them something is going wrong there,” said Caggiano.

Select Water Solutions has not commented on the work, other than to say they are not permitted to speak to the media.