Amend rules to provide a method to grant final approval for an onsite sewage treatment and disposal system that was permitted, installed and granted construction approval under the previous rule but had not yet received final system approval when the construction permit expired. The proposed change allows the department to approve the system as meeting the earlier standards rather than requiring the installed system to be brought into compliance with recently promulgated standards. The proposed changes have been reviewed by the members of the Technical Review and Advisory Panel.