Tracing the source of contamination in fresh foods grown in the ground is hard work, and companies spend a lot of money trying to keep Salmonella and other bugs out while allowing nature to run its course. But it's not easy.
New EPA rules would control air pollution coming from wells being drilled by the oil and natural gas industries. The rules are a result of a lawsuit by an environmental group that sued the agency to clean up the drilling industry after communities in Colorado, New Mexico and Wyoming complained about air pollution.
The federal rules announced Wednesday will, among other things, soon require oil and natural gas drillers to limit air pollution from drilling operations. Though the requirements stand to save companies money long term, producers say pollution regulations should be left to the states.
A supply glut and price collapse in natural gas is slowing down the hydraulic fracturing boom in some areas. How market forces, state regulations and health and environmental concerns are shaping development of the Marcellus Shale.
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