R.I. Gen. Laws § 46-12-18: Records of operation.

The director may, by regulation, order, permit, or otherwise, require any person who discharges to the waters or who discharges to a publicly owned treatment works to:

(1) Establish and maintain such records;

(2) Make such reports;

(3) Install, calibrate, use, and maintain such monitoring equipment or methods (including where appropriate, biological monitoring methods);

(4) Sample such discharges (in accordance with such methods, at such locations, at such intervals, and in a manner as the director shall prescribe); and

(5) Provide such other information relating to discharges into the waters or into a publicly owned treatment works as the director may reasonably require.