The five-mile Wolf Lake natural gas pipeline corridor, constructed within Kenai National Wildlife Refuge by Marathon Oil Company in 2001, has achieved its primary habitat restoration goals.  The pipeline connects areas of the Refuge roughly between the Swanson River and Beaver Creek Oil and Gas Leases, and develops subsurface resources held by Cook Inlet Region, Inc.  Natural revegetation occurred in most places after construction, but special attention was given to stream crossings and hill tops.  The final areas restored required planting of natural vegetation and fertilization.  The width of the right-of-way is now decreased from the 50-foot wide construction corridor to a 6-foot wide pipeline operational corridor which will facilitate additional natural restoration.