; (B) visitor satisfaction with the availability of water; (C) buying behavior with respect to products sold in disposable plastic bottles; (D) public safety including information on cases of dehydration or exposure to disease from drinking from surface water; and (E) disposable plastic bottle collection rates; and (2) submit such evaluation to the Director of the National Park Service and the Secretary of the Interior. (f) Definition of regional director concerned For the purposes of this section, the term regional director concerned means, with respect to a unit of the National Park System, the regional director of the region of the National Park System in which such unit is located, working in coordination with the superintendent of such unit.