The commission will make available to any person upon request a current index which provides identifying information as to the following records:

(a) Final opinions, including concurring and dissenting opinions, as well as orders, made in the adjudication of cases;

(b) Those statements of policy and interpretations of policy, statutes and regulations which have been adopted by the commission;

(c) Administrative staff manuals and instructions to staff that affect a member of the public;

(d) Planning policies and goals, and interim and final planning decisions;

(e) Factual staff reports and studies, factual consultant's reports and studies, scientific reports and studies, and any other factual information derived from tests, studies, reports or surveys, whether conducted by public employees or others; and

(f) Correspondence, and materials referred to therein, by and with the commission relating to any regulatory, supervisory or enforcement responsibilities of the commission, whereby the commission determines, or opines upon, or is asked to determine or opine upon, the rights of the state, the public, a subdivision of state government, or of any private party.

(2) The current index promulgated by the commission shall be available to all persons under the same rules and on the same conditions as are applied to public records available for inspection and copying.

(3) Identifying information contained in the index will indicate in which of the commission's offices the public record is kept.