Colorado Bureau of Land Management officials are considering requests from Gov. John Hickenlooper, Sen. Michael Bennet and western Coloradans to pull some of the parcels proposed for a federal oil and gas lease auction set for December. BLM spokesman Steven Hall said Thursday the agency is also considering whether to defer the sale of leases on 2,830 acres of public lands in the North Fork Valley of southwest Colorado until the update of an area resource management plan is completed. The land in the North Fork Valley near Paonia is among 224,341 acres of public land, mostly in western Colorado, that the BLM plans to offer for oil and gas leases in a Dec.