The commissioner shall make a preliminary advisory report to the drainage authority with an opinion about the adequacy of the preliminary survey report. The commissioner shall state any additional investigation and evaluation that should be done relating to public waters that may be affected and environmental, land use, and multipurpose water management criteria in section 103E.015, subdivision 1, and cite specific portions of the preliminary survey report that are determined inadequate. The commissioner shall file an initial preliminary advisory report with the auditor before the date of the preliminary hearing. The commissioner may request additional time for review and evaluation of the preliminary survey report if additional time is necessary for proper evaluation. A request for additional time for filing the commissioner's preliminary advisory report may not be made more than five days after the date of the notice by the auditor that a date is to be set for the preliminary hearing. An extension of time may not exceed two weeks after the date of the request.