The TCE Blog

The Deseret Morning News (UT) reports:

Drinking water supplies for tens of thousands of people near three active Superfund sites in the Bountiful and Woods Cross areas have been at risk or even polluted because of groundwater contamination.

The pollution is so bad that the federal government decided to join state regulators in directing long-term cleanup efforts of those sites.

Business owners who bought property in the affected areas, but were unaware that sources of contamination within the Superfund sites were beneath them, are expected to pay for removal of tainted soil and old polluting underground tanks that were put in long before they came along. Federal funds for cleanup are available for Superfund sites if they are active on the Environmental Protection Agency’s National Priorities List, but some property owners still pay.

Utah Division of Drinking Water director Ken Bousfield said last week that water suppliers in Bountiful and Woods Cross are, based on the most recent tests, providing clean drinking water. Bousfield also is aware of the plumes of contaminated groundwater in those areas and how test results can change.

“That’s why you monitor,” he said.

The EPA lists at least 14 active Superfund sites in Utah that are among the worst hazardous waste sites in the country. Two sites in the Woods Cross and Bountiful areas are active due to three plumes of groundwater polluted by chemicals used in the past by dry cleaners, automotive garages and other industry.

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A third Superfund project on the EPA’s active National Priorities List is called the Intermountain Waste Oil Refinery site, located in Bountiful in the area of 995 South and 500 West. That site, listed in 2000 as a federal priority, has been deemed by the EPA as “under control” in terms of risk for human exposure to the chemical pollutants.

At one time, however, the Utah Department of Environmental Quality and EPA were looking into whether those who rely on the so-called East Shore aquifer for drinking water — about 68,000 people — were “potentially affected” by a release of dichloroethylene into the aquifer.

Woods Cross public works director Scott Anderson follows state and federal testing regulations, which call for sampling of two wells every three years. He said municipal drinking water in his city is safe, serving about 7,400 people.

“Safe as anywhere else in the country,” Anderson said. “I think it’s very safe.”

Still, Woods Cross shut down one of its four drinking water sources, which supplied half the city, due to contamination by tetrachloroethylene, which the EPA said consistently was above the Cancer Risk Screening Concentration. Karla Scott can see the well from her home, where someone representing Woods Cross showed up about five years ago asking to test her water.

“He said it was OK,” Scott said. “You just go on with your life and don’t worry about it.”

If she wanted to, Scott could take a water sample for testing to the Utah State Health Lab, which sometimes takes special individual cases on, or to the private Chemtech-Ford Laboratories in Murray. The state lab does rigorous testing for water utilities throughout Utah.

Anderson said a test in 2004 showed that one of the three remaining active wells in Woods Cross turned up traces of trichloroethylene (TCE), but not at a level unacceptable by federal standards.

Bousfield said that in a few past isolated cases elsewhere in Utah, contamination has been so bad in drinking water supplies that people could actually smell chemicals in the water. When that happens, he added, there is a potential for an immediate health risk.

“It’s such a rare occurrence,” he said, unable to come up with a specific example over the phone. “I’m sure they do exist.”

5th South Plume

One of two large plumes of polluted groundwater in the Bountiful and Woods Cross areas, defining one Superfund site, is bad enough that seven of 26 domestic wells in the affected area are believed to have been contaminated by chemicals at concentrations that exceed acceptable federal levels. The potentially cancer-causing chemicals connected to that site are perchloroethylene (PCE) and TCE.

The EPA calls those two plumes the Bountiful/Woods Cross 5th South PCE Superfund Site, a place the EPA has assessed as “Human Exposure Not Under Control.” Mario Robles, the EPA’s project manager over the 5th South site, federally listed as a priority in 2001, said last week that cleanup of those plumes migrating under about 450 acres could take about 15 years.

“Really, nobody knows — it could be more, it could be less,” Robles said on the phone regarding a remediation time line.

So far, the plume contaminated with PCE has made its way into two residential drinking water wells, with one homeowner accepting the EPA’s offer of being hooked up to municipal water without charge. The other homeowner, Robles said, is opting to rely on filters for clean drinking water, preferring its taste over city supplies.

“The issue is if they change it often enough,” Robles said about the filter. “We explained the risks to them.”

The remaining five of the seven affected domestic wells are used primarily for irrigation, and Robles said there is not a risk of human exposure to the polluted groundwater around those wells. State regulators don’t keep track of water quality in private wells.

The two plumes, located roughly in the area of 500 South and 800 West in Bountiful, are slowly moving west, and the area of impact could spread, increasing the potential for future exposure from ingesting contaminated groundwater or by inhaling vapors as people use the groundwater for irrigation, according to the EPA.

Robles said that as soon as next month the EPA will decide whether soil near the Bountiful Family Cleaners, in operation since the 1940s but under different ownership, is contaminated enough with PCE to warrant removal and replacing. If that happens, the current owners of the cleaning business may have to cover some of those costs. PCE has been a preferred chemical used by dry cleaners for decades, dating from long before more strict disposal standards for PCE were put in place.

Ronald Bangerter bought the business in the 1960s and now owns it with his eight sons. One son, Bryce, said he hopes Bountiful Family Cleaners won’t have to pay any more than the $100,000-plus it already has spent during the past six years on legal fees and to look for pollution under the property.

“Sleepless nights, gut-wrenching, worried, what’s going to happen to the business,” is how Bryce Bangerter describes those six years. “We’ve run a clean ship since the ’60s.”

Prior to Bangerter’s family owning the business, waste went into a septic tank that drained into a field. But it’s unknown, Bangerter said, if the tank is still underground.

Until cleanup of the two 5th South plumes begins, the EPA is checking eight monitoring wells around the 400-acre PCE plume and 13 monitoring wells around the 50-acre TCE plume to watch how and where they move. The EPA believes the TCE plume has not impacted any wells.

The EPA’s plans for cleanup of the two plumes includes drawing the groundwater out, cleaning it and putting it back into the ground. Another method being considered involves adding nutrients into the polluted groundwater to speed up a natural degradation process.

Five Points Plume

A second Superfund site in the area, which is known by the EPA as the Five Points PCE plume, is a third plume of contaminated groundwater. It is located in the area of approximately 1500 South and State Highway 106, and received its active Superfund priority listing just last year.

The EPA’s on-scene coordinator, Duc Nguyen, said Your Valet Dry Cleaners owner Jim Patterson paid just under $100,000 last year to remove 43 cubic yards of contaminated soil and an old 1,000-gallon underground tank that Patterson said was leaking “bad gasoline.” The irony is not lost on Patterson that he had to pay for removal of a contamination source that wasn’t even linked to the dry cleaning industry.

“We pretty much feel confident that we removed the source of contamination,” Nguyen said.

Excavation stopped, however, partly because of so many underground utility lines and the area’s proximity to busy streets. And Woods Cross shut down one of its four drinking water wells because of consistently high amounts of potentially cancer-causing chemicals showing up in tests. The EPA said that migration of the plume is likely to increase contamination in wells over time.

Nguyen added that the EPA does not yet know the size of the Five Points plume west of Patterson’s business, located just up the hill from Karla Scott’s home of 40 years. Although there is one old monitoring well a block away, and the EPA will be installing new monitoring wells in the coming year, at this point it’s unknown what the impacts are from that plume, which the EPA said contains PCE.

Patterson recalled two other dry cleaners near the old Five Points Mall that possibly could be held accountable for the Five Points plume, but he said they are no longer in business. Patterson bought his Bountiful location in 1963. The money he spent on testing and clean-up is not covered by insurance, although the expenses do qualify as a tax write-off.

“You don’t get much of a sympathetic ear, because you own the land, and who owns the land pays,” Patterson said. “If I could go back on who had the tank, I might seek recovery from them.”

Even though the Five Points plume got its official EPA priority listing last year, Patterson has been dealing with state and federal officials for about nine years, drilling and testing to see where and what type of contamination existed. It is all a result of a drinking water test years ago that found unacceptable levels of PCE present.

Your Valet now says on its Web site it is the first dry cleaner in Utah to offer a new process called GreenEarth Cleaning, which instead of PCE uses a silicone-based cleaning solution developed by General Electric in the 1990s. It is a modified liquid silicone similar to what’s found in cosmetics, shaving creams and deodorants that “will not pollute our water, soil or air.”

Patterson said only one of his six locations still needs converting to GreenEarth, at a cost of about $15,000. There’s no law that says he has to make the conversion, but it’s something he said he’s doing in good conscience.

“There’s not a lot more that I can do, short of tearing up the intersection and knocking the building down,” he said. “It’s expensive, and we’ve done what we can do. I hope it’s over.”

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