R.I. Gen. Laws § 23-19.5-4: Keeping of records — Regulations.

The department of environmental management shall keep the records of all percolation tests, ground water table elevation determinations performed, and also a record of all other required information for a period of at least fifteen (15) years. The director of environmental management may promulgate any rules and regulations as the director may deem necessary for the proper implementation of the provisions of this chapter. The director may authorize licensed designers of individual sewage disposal systems to make submittals under this chapter.