Supporters of high-volume oil and gas extraction said Wednesday that they'll seek dozens of changes in proposed rules to govern the practice in Illinois that appear to violate a hard-won compromise between industry and environmentalists.

A coalition of industry groups will outline more than 65 areas of concern to a legislative panel that must decide whether the rules - written by the Department of Natural Resources to implement a new hydraulic fracturing law - can take effect as written, said Mark Denzler vice president of the Illinois Manufacturers Association.

The law passed last year was seen as a national model of compromise, but both advocates and opponents since have been critical of the rule-making process.

The DNR reworded some rules after receiving more than 30,000 comments on it original draft, and submitted the new version to the Joint Committee on Legislative Rules Aug. 29. JCAR has 45 days to approve the rules, reject them or ask for changes.

Among the objections: New language says the DNR can consider the cumulative health and environmental impact of multiple wells when evaluating a permit for a single well.

Environmentalists dislike a cap on the total amount that companies can be fined.