; 94 Stat. 3384), and subject to valid existing rights, on receipt of a request by the State or County and subject to such terms and conditions as are satisfactory to the Secretary of Agriculture, the Secretary may transfer the Forest Service land or interests in Forest Service land described in subsection (b) to the State or County, without consideration, to protect the environmental quality and public recreational use of the transferred Forest Service land. (b) Description of land The land referred to in subsection (a) is any Forest Service land that is located within the boundaries of the area acquired under Public Law 96–586 (commonly known as the Santini-Burton Act ; 94 Stat. 3381) that is— (1) unsuitable for Forest Service administration; or (2) necessary for a public purpose. (c) Use of land A parcel of land conveyed pursuant to subsection (a) shall— (1) be managed by the State or County, as applicable— (A) to maintain undeveloped open space and to preserve the natural characteristics of the transferred land in perpetuity; and (B) to protect and enhance water quality, stream environment zones, and important wildlife habitat