This bill directs the transfer of administrative jurisdiction over specific federal lands in Tuolumne County, California, between the National Forest System and the National Park System. Approximately 160 acres of National Forest System land are transferred to the Secretary of the Interior for management as part of Yosemite National Park . Concurrently, about 170 acres of National Park System land are transferred to the Secretary of Agriculture for management within Stanislaus National Forest . The Secretaries of Agriculture and the Interior are authorized to make minor corrections and adjustments to the transferred land descriptions by mutual agreement, with such changes effective upon Federal Register publication. The legislation also mandates identification of any known hazardous substances on these lands, with the original managing agency retaining responsibility for cleanup obligations. These transfers do not affect valid existing rights or the validity of existing authorizations, though the receiving agency will administer them.