Within six months of the receipt of the work completion report specified in Section 4585, the director shall determine, by inspection, whether the work described in the report has been properly completed in conformity with the rules and regulations of the board and the standards of this chapter. If the work has been so completed, the director shall issue a report of satisfactory completion of the work. If not, the director shall take corrective action as the director determines to be appropriate in accordance with Article 8 (commencing with Section 4601).