Wastewater works that were constructed, installed, modified, or had additions made without a valid construction permit, sq cin permit on or after June 22, 1972, will be upgraded to meet current design standards. The owner will submit to the Department an engineering evaluation of the wastewater facility, prepared by a professional engineer, and correct any deficiencies identified during the Department's review of the engineering evaluation.
123 Neb. Admin. Code, ch. 2, § 003