; (iii) State or regional departments of labor, energy, the environment, economic development, or commerce or that regulate utilities; or (iv) the Administrator, the Secretary, the Federal Energy Regulatory Commission, the Secretary of the Army (acting through the Chief of Engineers), the Secretary of the Interior, the United States Geological Survey, the Secretary of Agriculture, the Secretary of Commerce, or the Secretary of the Treasury, as applicable; and (B) by using any other available sources of information. (4) Verification of information (A) Certification The Secretary shall require the worker, applicable firm, or a customer of such firm to certify— (i) all information obtained under paragraph (1) through questionnaires