CASPER, Wyo. (AP) — A Wyoming landowners group and other advocacy groups want the Environmental Protection Agency to require oil and gas extractors to disclose the chemicals emitted from oil and gas production each year.

The alliance of 17 organizations, including the Wyoming-based Powder River Basin Resource Council, filed a petition with the EPA on Wednesday.

The petition includes hydraulic fracturing, a production technique used to free underground oil and gas deposits.

The Associated Press reports that the requested rule change would not alter current emissions limits or permit requirements.

Deb Thomas, of the Powder River Basin Resource Council, says people need to know what's in their air and water.

A spokesman for the American Petroleum Institute declined comment until the organization has a chance to analyze the petition.