United States shall, while participating in the hearing conducted by such board or otherwise engaged on the work of such board, be entitled to receive compensation at a rate fixed by the Secretary, but not exceeding $100 per diem, including traveltime, and while away from their homes or regular places of business they may be allowed travel expenses, including per diem in lieu of subsistence, as authorized by law 30 Stat. 499. 5USC 5703(5 U.S.C. 73b-2) for persons in the Government service employed intermittently.
"(j)(1) I n connection with any conference called under this section, the Secretary is authorized to require any person whose activities result in the emission of air pollutants causing or contributing to air pollution to file with him, in such form as he may prescribe, a report, based on existing data, furnishing to the Secretary such information as may reasonably be required as to the character, kind, and quantity of pollutants discharged and the use of devices or other means to prevent or reduce the emission of pollutants by the person filing such a report. After a conference has been held with respect to any such pollution the Secretary shall require such reports from the person whose activities result in such pollution only to the extent recommended by such conference. Such report shall be made under oath or otherwise, as the Secretary may prescribe, and shall be filed with the Secretary within such reasonable period as the Secretary may prescribe, unless additional time be granted by the Secretary. No person shall be required in such report to divulge trade secrets or secret processes and all information reported shall be considered confidential 62 Stat. 791.for the purposes of section 1905 of title 18 of the United States Code.
"(2) If any person required to file any report under this subsection shall fail to do so within the time fixed by the Secretary for filing the same, and such failure shall continue for thirty days after notice of such default, such person shall forfeit to the United States the sum of $100 for each and every day of the continuance of such failure, which forfeiture shall be payable into the Treasury of the United States, and shall be recoverable in a civil suit in the name of the United States brought in the district where such person has his principal office or in any district in which he does business: Provided, That the Secretary may upon application therefor remit or mitigate any forfeiture provided for under this subsection and he shall have authority to determine the facts upon all such applications.
"(3) I t shall be the duty of the various Ignited States attorneys, inider the direction of the Attorney General of the United States, to prosecute for the recovery of such forfeitures.
"(k) Notwithstanding any other provision of this section, the Secretary, upon receipt of evidence that a particular pollution source or combination of sources (including moving sources) is presenting an imminent and substantial endangerment to the health of persons, and finding that appropriate State or local authorities have not acted to abate such sources, may request the Attorney General to bring suit on behalf of the United States in the appropriate United States district court to immediately enjoin any contributor to the alleged pollution to stop the emission of contaminants causing such pollution or to take such other action as may be necessary.
"STANDARDS TO ACHIEVE HIGHER LEVEL OF AIR QUALITY