Haw. Rev. Stat. § 508C-7: Notice.

(a) A copy of an environmental covenant shall be provided by the person determined by the agency and in the manner required by the agency to:

(1) Each person that signed the covenant;

(2) Each person holding a recorded interest in the real property subject to the covenant;

(3) Each person in possession of the real property subject to the covenant;

(4) Each county or other subdivision of county government in which real property subject to the covenant is located; and

(5) Any other person the agency determines should receive notice.

(b) The validity of a covenant shall not be affected by failure to provide a copy of the covenant as required under this section.