Burden hour estimates are included on the ONRR Web site at http://www.onrr.gov/Laws_R_D/FRNotices/FRInfColl.htm-. Send comments on the accuracy of these burden estimates or suggestions on reducing the burden to the Office of Natural Resources Revenue, Attention: Rules & Regs Team. 1012-XXXX P.O. Box 25165, Denver, CO 80225-0165. An agency may not conduct or sponsor, and a person is not required to respond to, a collection of information unless it displays a currently valid OMB control number.