R.I. Gen. Laws § 46-12-15: Inspection powers — Rules and regulations.

The director shall have full powers to inspect, and make orders regulating and directing all methods, means, and devices employed on any steamer or other vessel in the waters of the state, or at any installation on land, in receiving, carrying, storing, heating, handling or discharging any petroleum, gasoline, kerosene, tar, oil, or any product or mixture thereof; and the director may by order establish all rules and regulations to prevent the discharge or escape of any of the substances into the waters of the state.