Sentences with phrase «in groundwater wells»

At soil depths greater than 30 feet below the surface, the soil temperature is relatively constant, and corresponds roughly to the water temperature measured in groundwater wells 30 to 50 feet deep.

So far, results indicate that any methane readings in groundwater wells came from organic matter.

Not exact matches

They should instead re-examine their practices that might have led to traces of, for example, diesel turning up in the Wyoming groundwater and come up with standards that would make leaks along the well bore impossible before less appropriate and more costly rules are thrust upon them at a time when natural gas prices are hitting 10 - year lows.

One study out of Duke University found a higher - than - average presence of methane in water wells located close to fracking operations, but methane in groundwater can come from a variety of sources, including organic decomposition near the surface.

Yet we who live in Chilliwack know that the pipeline route runs through two school yards, crosses our city's protected groundwater zone and passes within capture zones of city wells.

The latest soil, groundwater, surface water and sediment testing at Sportsman's Park in Naperville found lead concentrations in wells within Illinois Environmental Protection Agency standards for drinking water and groundwater, according to the Naperville Park District.

Elevated levels of radium have been found in groundwater samples from shallow monitoring wells on the Bethpage High School campus and the state DEC plans to take more samples and scan field and soil areas there for more radioactive elements.

The study uses four statistical approaches, which come to the same conclusion: «there is no significant correlation between dissolved methane concentrations in groundwater and proximity to nearby oil / gas wells.»

They looked at more than 2,300 samples from 234 natural gas wells during mud gas logging, and 67 private groundwater supplies prior to natural gas development occurring nearby in a five county area.

Combined, the results of all four statistical approaches yield a defensible, compelling argument that there is no significant correlation between dissolved methane concentrations in groundwater and proximity to nearby oil / gas wells.»

If approved in the Legislature, the resolution would fund the unit — responsible for drilling monitoring wells to evaluate groundwater pollution across the county at sites like the former Grumman facility in Calverton — using money from the water quality fund, a fund established by a voter - approved, quarter - penny sales tax.

The well - drilling unit played a key role in the county's groundwater investigation that forced the U.S. Navy to step up efforts to clean up a groundwater plume contaminated with high concentrations of «volatile organic compounds» beneath the former Grumman weapons facility in Calverton.

The proposed budget also includes funding to fast - track construction of wells to contain and treat groundwater contamination traced to a site where the U.S. Navy and what is now Northrop Grumman ran manufacturing, research and testing operations in Bethpage decades ago.

Foes of a New York City plan to study reopening dozens of dormant groundwater wells in Southeastern Queens urged the plan's postponement to make sure Long Island's water supply wouldn't be jeopardized.

This was based on results from samples from Entergy's groundwater monitoring program taken January 26 that identified elevated levels of tritium in three monitoring wells out of several dozen.

Its own water tests, done as a result of Hickey's discovery, included results that showed levels of PFOA at 18,000 ppt in the groundwater under its McCaffrey Street plant — several hundred yards from the village's well fields.

Across the nation, concern over contamination has risen in places like Seattle, where the city recently sued the agribusiness giant Monsanto over chemical pollution in the Duwamish River, and in Minnesota, where a state report issued last week found that up to 60 percent of groundwater samples from wells in the central part of the state had unsafe levels of nitrates.

Comparing the relative abundance of these carbon isotopes in the various wells, the researchers discovered that over half of wells more than 250 meters deep yielded mostly groundwater at least 12,000 years old.

While the tritium levels weren't dangerous, its presence suggests that at least some groundwater in the wells postdates the 1950s nuclear testing.

DEEP WATER Deep groundwater wells, such as this hand - pumped well in Uganda being operated by water resources scientist Scott Jasechko, can contain mixes of old and young water and traces of pollution.

No matter where the young water comes from, the new technique for identifying the percentage of fossil groundwater in a well could be an important tool for communities, says Audrey Sawyer, a hydrogeologist at Ohio State University in Columbus.

A two - year study of fracking wells in Los Angeles, conducted by consultants Cardno Entrix and funded by the oil industry, monitored 15 environmental factors before and after fracking, including groundwater chemistry, vibration at the surface and at depth, and methane release.

EnCana bought many of the wells in 2004, after the first problems with groundwater contamination had been reported.

Researchers expanded their projections to include wells in Kansas that were both depleted and steady in their historic groundwater levels as well as the eight states that rely on the High Plains Aquifer.

«That would be one situation where you could, in theory, put a well in there and pump that water out and use it without affecting a groundwater system.»

In February 2014, Pavley, the California state senator, saw her best chance in years to change the way California managed its groundwater supplieIn February 2014, Pavley, the California state senator, saw her best chance in years to change the way California managed its groundwater suppliein years to change the way California managed its groundwater supplies.

He estimates that the wells in Needles draw an average of about 700 million gallons of groundwater annually that, in truth, ultimately comes from the Colorado River.

A new study links elevated levels of methane and other gases in groundwater to nearby hydraulic fracturing wells on the Marcellus shale, and suggests the problem lies in poorly designed well casings

Overall, pesticides were less common in so - called groundwater, such as that in wells, although 33 percent of deep wells that tap aquifers contained one or more of the chemicals.

«It's fair to assume that there's going to be another drought, and fair to assume that there will be usage of groundwater in that drought too; the wells are already there,» Lettenmaier said.

«Regenerated» water Yet regeneration is already being used in the United States and abroad, reducing groundwater and surface water depletion as well as energy consumption.

Pere Masqué, also co-author of the study, adds that, «in addition to nutrients, SGD can play a crucial role as a source of other dissolved compounds flowing into the Mediterranean Sea, as well as in all the oceans worldwide, such as carbon, iron and other micronutrients, given the magnitude of the calculated fluxes and the high concentration of these compounds in groundwater.»

As part of a search for the cause, geologic tests revealed large deposits of arsenic - rich minerals steadily leaching into groundwater, causing levels in many wells to top 500 ppb.

In northern India, tens of millions of bore wells are depleting groundwater much faster than it can replenish, just as in ChinIn northern India, tens of millions of bore wells are depleting groundwater much faster than it can replenish, just as in Chinin China.

Two state agencies are teaming up with farmers in a 185 - square - mile area near Ginnie Springs to study best - management practices, such as reducing groundwater pumping and fertilizer use.

With more than 17 million Americans now living within one mile of an oil and gas well, there is concern about the possible contamination of surface and groundwater by trace metals, radioactive isotopes and other inorganic compounds released in these areas, they point out.

They will require drilling companies to encase their wells in cement through vulnerable areas where they could leak into groundwater, and will require testing of that cement to ensure it is properly in place.

The agency tested the water in the shallow wells that tap the groundwater above the 169 gas - producing wells in the field; in two municipal wells in the town; and in several surface and deep wells that it drilled for monitoring purposes.

Yet in addition to extinctions there are many dramatic, well - documented effects of introduced species, such as shifts in regional climate, reduced groundwater levels, altered nutrient cycling, and reduced oxygen levels in aquatic systems, which affect the abundance and distribution of native species.

Gido, Perkin and their colleagues at the U.S. Geological Survey, Colorado State University, Colorado Parks and Wildlife, Westar Energy and The Nature Conservancy used groundwater well data from the 1950s to 2010 to track the rate of change in the water table of the High Plains Aquifer.

The team collected samples of methane from settings such as lakes, swamps, natural gas reservoirs, the digestive tracts of cows, and deep ancient groundwater, as well as methane made by microbes in the lab.

The amount of groundwater present is a good indicator of fire risk, said Morton, because the signal persists longer and holds the «memory» of water in the soil that is the main source of moisture for trees and vegetation.

Tepco has drilled wells in the mountains to pump out and divert groundwater before it reaches Fukushima.

To check their model forecast, as the dry season has gotten underway, the researchers have compared their initial forecast with observations coming in from NASA's precipitation satellite missions» multisatellite datasets, as well as groundwater data from the joint NASA / German Aerospace Center Gravity Recovery and Climate Experiment (GRACE) mission.

Because oil and gas companies must drill tens of thousands of new wells each year in the United States to maintain production through time, groundwater contamination remains a possibility.

Arsenic - laced groundwater has been found in at least 30 countries, from Argentina to China, Cambodia and Vietnam, as well as parts of Canada and the U.S., but the problem is particularly bad in India and Bangladesh as irrigation expands.

At least 140 million people in Asia are drinking arsenic - contaminated water, and the ever - expanding use of groundwater wells — a growing population needs water to drink, and farmers need it to grow crops to feed them — has been making the situation worse.

Data from roughly 275,000 groundwater samples in the High Plains and Central Valley aquifers show that many Americans live less than two - thirds of a mile from wells that often far exceed the uranium guideline set by the Environmental Protection Agency.

The team used a submersible pump in deep wells to obtain groundwater samples at depths of 280 to 1,300 meters from seven locations in the fault zones surrounding the epicenter 11 days after the earthquake in April 2016.

«And nitrate is a groundwater contaminant in many wells in Wisconsin, so it's not just the plants that benefit if the nitrate does not infiltrate deeper and deeper into the ground.»