CARLSBAD — The Department of Energy's Carlsbad Field Office wants to increase the scope of gases it monitors in its underground panels at the Waste Isolation Pilot Plant.

The DOE recently issued a set of proposed modifications to its hazardous waste permit for the WIPP site near Carlsbad. The state permit was first issued by the New Mexico Environment Department in 1999.

The proposed modification, according to a news release, would allow the department to monitor for hydrogen and methane in underground panels used for the storage of transuranic waste until final panel closure. The class 2 proposed permit modification was issued Nov. 21.

Class 2 is the middle level of proposed permit modifications. Rarer and more significant are Class 3 modifications, such as last year's state authorization for WIPP to dispose of remote handled waste. The state's jurisdiction over WIPP is related to chemical issues.

"We're demonstrating that we're being safe," said Roger Nelson, chief scientist with the DOE