; (4) an assessment of the risk posed, if any, by the presence of microplastics in the food supplies and sources of drinking water of United States consumers that includes— (A) an identification of the most significant sources of those microplastics; and (B) a review of the best available science to determine any potential hazards of microplastics in the food supplies and sources of drinking water of United States consumers; and (5) a measurement of— (A) the quantity of environmental chemicals that absorb to microplastics; and (B) the quantity described in subparagraph (A) that would be available for human exposure through food supplies or sources of drinking water. (c) Authorization of appropriations There are authorized to be appropriated such sums as are necessary to carry out this section. 8. Report on eliminating barriers to increase the collection of recyclable materials Not later than 1 year after the date of enactment of this Act, the EPA Administrator shall submit to Congress a report describing— (1) the economic, technological, resource availability, or other barriers to increasing the collection of recyclable materials; and (2) recommendations to overcome the barriers described under paragraph (1). 9. Report on economic incentives to spur development of new end-use markets for recycled plastics Not later than 1 year after the date of enactment of this Act, the EPA Administrator shall submit to Congress a report describing the most efficient and effective economic incentives to spur the development of additional new end-use markets for recyclable plastics (including plastic film), including the use of increased recycled content by manufacturers in the production of plastic goods and packaging.