(a)
- (1) The quality of effluent that will be applied to the dispersal field shall meet the American National Standards Institute/National Sanitation Foundation (ANSI/NSF) Standard 40, revised 2005, requirements for Class 1 treatment systems.
- (2) Only pretreatment units that have obtained approval from the Department of Health shall be used.
- (b) Pretreatment system shall be required as part of any drip dispersal system design.
- (c) The daily flow rate capacity of a pretreatment system shall equal or exceed the daily flow rates found in Appendix B of the Rules Pertaining to Onsite Wastewater Systems, 14 CAR pt. 21.
- (d) Pretreatment systems installed in conjunction with an individual residential structure shall have a daily flow rate capacity of not less than four hundred (400) gallons per day.
(e) Pretreatment systems installation on nonresidential or multistructures shall be sized according to:
- (1) Influent wastewater strength; and
- (2) Total daily flow rate expressed in gallons per day.