The President shall, within nine months of October 30, 1970, transmit to the Congress a report of the study and surveys required by section 4392 of this title, including (1) his conclusions regarding the nature and gravity of the hazards to human health and safety created by environmental pollution, (2) his evaluation of the medical and other assistance available to persons affected by such pollution, especially when such pollution reaches emergency levels, (3) his assessment of the measures, other than those relating solely to abatement of the pollution, that may be taken to avoid or reduce the effects of such pollution on the health of individuals, and (4) such legislative or other recommendations as he may deem appropriate.