97 STAT. 316 PUBLIC LAW 98-63—JULY 30, 1983 (4) Gibson Dam powerplant, located on the Sun River in Lewis and Clark Counties, Montana. Study. The Secretary of the Interior shall, under the general investiga- tions authority, engage in a joint. State-led study with the State of Nebraska, which will consult with its appropriate subdivisions, of cost-effective alternatives to the Norden Dam, O'Neill unit of the Pick-Sloan Missouri River Basin program, Nebraska; and shall use Time period. available funds to initiate such study. The study period shall not exceed 18 months, starting with enactment of this Act. No funds shall be expended for any construction activity for the Norden Dam, O'Neill unit prior to the completion of this study DEPARTMENT OF ENERGY ENERGY SUPPLY, RESEARCH AND DEVELOPMENT ACTIVITIES OPERATING EXPENSES For an additional amount of $500,000 for "Operating Expenses, Energy Supply, Research and Development" to remain available until expended. ATOMIC ENERGY DEFENSE ACTIVITIES PLANT AND CAPITAL EQUIPMENT For an additional amount for "Plant and Capital Equipment, Atomic Energy Defense Activities", for Project 83-D -200, $18,300,000, to remain available until expended. WESTERN AREA POWER ADMINISTRATION CONSTRUCTION, REHABILITATION, OPERATION AND MAINTENANCE To accelerate the completion of projects which will provide addi- tional power benefits, an additional $30,000,000, to remain available until expended, is hereby appropriated for "Construction, Rehabili- tation, Operation and Maintenance, Western Area Power Adminis- tration". FEDERAL ENERGY REGULATORY COMMISSION SALARIES AND EXPENSES For an additional amount of $3,488,000, for the Federal Energy Regulatory Commission: Provided, That $500,000 shall be available only for continuation of the Trans-Alaskan Pipeline System (TAPS) case. GENERAL PROVISION Appropriations made by this Act and those appropriations made 96 Stat. 1830. available by Public Law 97-377 for activities provided for in Public 95 Stat. 1135. Law 97-88 shall be available until expended under the same terms and conditions as was provided under the Energy and Water Devel- opment Appropriation Act, 1982, Public Law 97-88: Provided, That not to exceed 10 per centum of "Energy Supply, Research and Development Activities", "Operating Expenses" and "Plant and
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