assurances satisfactory to the Secretaries that individuals employed under the project for which the application is submitted shall (i) have attained the age of fifteen but not attained the age of nineteen, (ii) be permanent residents of the United States or its territories, possessions, or the Trust Territory of the Pacific Islands, (iii) be employed without regard to the personnel laws, rules, and regulations applicable to full-time employees of the applicant, (iv) be employed for a period of not more than ninety days in any calendar year, and (v) be employed without regard to their sex or social, economic, or racial classification; and

such other information as the Secretaries may jointly by regulation prescribe.