In addition, Lilco's gas operations and power plants would be sold to separate companies.

The sale of the natural gas operations is by no means certain, given the depressed gas market.

Another 2011 study identified 632 chemicals used in natural gas operations.

Bans on land disposal will pose even greater challenges, especially for remote oil and gas operations.

Just last week Northern Power announced several executive changes, including her appointment as president in charge of its natural gas operations.

As with any gas operation in North America, there are significant concerns to the environmental and social effects of the industry on the surrounding area.

In 1984, the board of directors sold the grocery store and gas operations to concentrate on its Scan division.

Over the next few years (1903 and 1911) there were improvements to its internal functions, such as its gas operation.

It also owns the Conoco oil and gas operations.

The company said that the plan was part of a previously announced restucturing intended to better position the domestic natural gas operations for growth.