(1) The county road administration board shall have available to all persons at its offices in Olympia a current index which provides identifying information as to the following records:

(a) All records issued before July 1, 1990, for which the county road administration board has maintained an index;

(b) Final orders entered after June 30, 1990, that are issued in adjudicative proceedings as defined in RCW 34.05.010(1) and that contain an analysis or decision of substantial importance to the county road administration board in carrying out its duties;

(c) Declaratory orders entered after June 30, 1990, that are issued pursuant to RCW 34.05.240 and that contain an analysis or decision of substantial importance to the county road administration board in carrying out its duties;

(d) Interpretive statements as defined in RCW 34.05.010(8) that were entered after June 30, 1990;

(e) Policy statements as defined in RCW 34.05.010(14) that were entered after June 30, 1990; and

(f) Minutes of county road administration board meetings.

(2) The system of indexing shall be as follows:

(a) The indexing system shall be administered by the board's public records officer and shall be located at 2404 Chandler Court S.W., Suite 240, Olympia, Washington.

(b) Copies of all indexes shall be available for public inspection and copying in the manner provided for the inspection and copying of public records.

(c) The public records officer shall establish and maintain a separate index for each item contained in subsection (1)(a) through (f) of this section as follows:

(i) All final orders and declaratory orders determined by the county road administration board to contain analyses or decisions of substantial importance to the board shall be listed alphabetically by the titles of the hearing or controversy and shall contain a phrase describing the important issue or issues.

(ii) Interpretive statements and policy statements shall be indexed by the applicable program administered by the county road administration board.

(iii) County road administration board minutes shall be indexed chronologically.

(d) The public records officer shall update all indexes at least once a year and shall revise such indexes when deemed necessary by the county road administration board.