Haw. Rev. Stat. § 342D-109: Activities of the department.

The department may engage in the following activities relating to commercial passenger vessels operating in the marine waters of the State:

(1) Direct in-water monitoring of discharges or releases of sewage and direct monitoring of the opacity of air emissions from those vessels;

(2) Monitoring and studying of direct or indirect environmental effects of those vessels; and

(3) Researching ways to reduce effects of those vessels on marine waters and other coastal resources.