Questar Gas Co., Utah's top residential natural gas supplier, may request a second general rate-increase request if its current request results in an increase that would not allow the utility to meet its planned capital improvement needs.

Questar spokesman Chad Jones said Wednesday that such a determination could not be made until the current case is decided by the Utah Public Service Commission, which is reviewing Questar's request for a $22 million rate hike.

The company had originally asked for a 7 percent rate increase that would go into effect by August. If approved, the increase would have meant a $27 million annual hike that would have cost the typical residential customer $3.92 more per month on their natural gas bill. The current request would cost the typical residential customer about $3.20 more per month.

Making two requests for general rate increases in one year is unusual, but not unprecedented. The last time Questar Gas requested two general rate cases in a 12-month period was September 1982 and July 1983, according to Jones.