The department's capital planning and development section shall be responsible for complying with the threshold determination procedures of WAC 197-11-300 through 197-11-390; and shall be responsible for the supervision, or actual preparation of draft EISs pursuant to WAC 197-11-400 through 197-11-495, including the circulation of such statements, and the conduct of any public hearing required by chapter 197-11 WAC. The office of capital programs shall also prepare or supervise the preparation of any required final EIS pursuant to WAC 197-11-550 through 197-11-695.