South Carolina Code of Regulations › Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL › Subchapter 61-56 - ONSITE WASTEWATER SYSTEMS › Section 61-56.400 - Appendices of Standards for Permitted Systems › Appendix 61-56.400.Q - System Standard 610 - Specialized Onsite Wastewater System Designs (less than 1500 gpd)

Current through Register Vol. 48, No. 6, June 28, 2024
(1) Site/Permitting Requirements
(a) This Standard shall not apply to the following:
(i) Projects where two (2) or more pieces of deeded property
				  will share a common system.
(ii) Residential or commercial projects where the individual
				  or combined peak sewage flow is estimated to be in excess of fifteen hundred
				  (1500) gpd.
(iii) Projects that discharge wastes containing high amounts
				  of fats, grease and oil, including restaurants and other food service
				  facilities, unless the system manufacturer certifies that the proposed system
				  is designed to treat such high strength wastes.
(iv) Industrial process wastewater.
(b) A site may be considered for a specialized onsite
				  wastewater system design if written documentation provided by a Registered
				  Professional Engineer licensed in South Carolina, including soil studies
				  performed by a licensed person meeting the criteria of Section 102.1(2)(b) or
				  (c), indicates that the proposed system will function satisfactorily and in
				  accordance with all requirements of this regulation. Such substantiating
				  documentation must include the following:
(i) A Soils Report from a licensed person meeting the
				  criteria of Section 102.1(2)(b) or (c) including detailed soil profile
				  descriptions and Soil Series classification(s) utilizing methods and
				  terminology specified in the Field Book for Describing and Sampling Soils;
				  depth to the zone of saturation utilizing methods and terminology outlined in
				  Redoximorphic Features for Identifying Aquic Conditions, and other appropriate
				  principles specified in Soil Taxonomy; the depth to restrictive horizons; and a
				  description of topography and other pertinent land features.
(ii) For drain field and replacement areas with a less than
				  fifteen (15) inch zone of saturation, no part of a specialized onsite
				  wastewater system may be installed within one hundred twenty-five (125) feet of
				  the critical area line or tidal waters as determined by the Department or
				  within seventy-five (75) feet of the ordinary high water elevation within the
				  banks of non-tidal, environmentally sensitive waters.
(iii) There shall be a replacement area equivalent to at
				  least fifty (50) percent in size of the original system area held in reserve
				  for system repair. This area shall have a suitable configuration and shall meet
				  the minimum soil and site conditions of this regulation.
(iv) A plan that has been sealed, signed and dated by a
				  Registered Professional Engineer licensed in South Carolina certifying that the
				  proposed onsite wastewater system has been designed in accordance with the
				  requirements of this regulation and will function satisfactorily. The plan
				  should also show an area equivalent to at least fifty (50) percent in size of
				  the original system held in reserve for system repair.
(v) The manufacturer's recommendations for operation and
				  maintenance of the system, and the consulting Registered Professional
				  Engineer's management plan to meet this. For systems that have mechanical
				  components and/or require a higher degree of maintenance to ensure the proper
				  treatment and disposal of Domestic Wastewater, an operation and maintenance
				  (O&M) plan must be developed by the designing Registered Professional
				  Engineer to be given to the party who is ultimately responsible for the
				  operation of the system. O&M plans must be recorded along with the property
				  deed and must run with the land.
(c) Any permit to construct that is issued pursuant to this
				  standard shall be based upon the consulting Registered Professional Engineer's
				  design, certification, and other supporting documentation provided by the
				  licensed person meeting the criteria of Section 102.1(2)(b) or (c).
(d) The consulting Registered Professional Engineer shall be
				  responsible for supervising construction of the system and providing the
				  Department with a certified as-built plan of the actual installation containing
				  all details required by the Department. The certified as-built plan must be
				  submitted to the Department within two (2) business days of completing the
				  system installation. If the construction schedule for a specialized system
				  installation is more than forty-eight (48) hours, the Department must be
				  notified in advance of the beginning of construction. Any Final Approval that
				  is released pursuant to this standard shall be based upon this engineering
				  certification.