Minn. R. 7080.2440
COLLECTION SYSTEMS
Collection of greater than 2,500 gallons per day of sewage from multiple buildings or multiple other establishments discharging into an ISTS must be: A. according to the Prescriptive Designs and Design Guidance for Advanced Designers, incorporated by reference under part 7080.1550 , subpart 2; or B. designed by a Minnesota licensed professional engineer.