§ 171.110 DESIGN REQUIREMENTS FOR NON-SOIL BASED SYSTEMS.
   (A)   General. Non-soil based systems shall include holding tanks and surface discharging onsite wastewater treatment systems. These systems shall be approved only for uses specified in this section and shall not be approved in lieu of a reserve soil treatment area.
      (1)   Management responsibility. Management and operational procedure and responsibility shall be closely established and provided for in a recordable covenant, or other legal agreement(s) as determined by the Health Officer to assure compliance with the objectives as described in § 171.101.
   (B)   Holding tanks. Holding tanks shall be approved only for the use listed in § 171.072, and when the conditions of this section are met. Wastes removed from holding tanks shall be disposed of only at an approved wastewater treatment plant or a landfill permitted and designed to accommodate untreated domestic sewage.
      (1)   Site plan and system design. A site plan prepared in accordance with the requirements of §§ 171.100 and 171.125 through 171.128 and that also demonstrates:
         (a)   Flotation prevention. When installed below the base flood elevation, the tanks shall be sufficiently anchored to prevent floatation. Anti-buoyancy calculations shall be prepared, signed, and sealed by an Illinois licensed professional engineer.
         (b)   Capacity. Holding tanks shall be sized at a minimum of two times the projected daily flow or a minimum of 1,500 gallons, unless otherwise approved.
         (c)   Audio-visual alarm. Holding tanks shall be equipped with an audio-visual alarm to signal two-thirds of the total capacity.
         (d)   Holding tank agreement. The owner of the property served shall sign a Department Holding Tank Agreement.
         (e)   Agreement to pump. The owner of the property shall submit verification that he or she has an agreement with a Lake County licensed OWTS pumper for the pumping and transporting of the wastewater in the holding tank on an as needed basis.
   (C)   Surface discharging onsite wastewater treatment systems. Surface discharging onsite wastewater treatment systems shall be approved only for the use listed in § 171.072(C) and when the conditions of this section are met.
      (1)   Site plan and system design. A site plan prepared in accordance with the requirements of §§ 171.100 and 171.125 through 171.128 and that also demonstrates:
         (a)   Flotation prevention. When installed below the base flood elevation, the tanks shall be sufficiently anchored to prevent floatation. Anti-buoyancy calculations shall be prepared, signed, and sealed by an Illinois licensed professional engineer.
         (b)   Dilution. A discharge point to a surface water or wetland provides a minimum 5:1 dilution of the effluent.
         (c)   Discharge point. The proposed discharge point is a minimum of one-quarter mile from a public bathing beach.
         (d)   System performance. The proposed system is designed to meet final discharge effluent standards in accordance with the requirements of NPDES Permit No. ILG62 as incorporated in Appendix A.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013; Ord. 17-0605, passed 6-13-2017)