Idaho Admin. Code r. 58.01.03.003 - DEFINITIONS

For the purposes of these rules, the following definitions apply.

01. Abandoned System. A system which has ceased to receive blackwaste or wastewater due to diversion of those wastes to another treatment system or due to termination of waste flow.

02. Alternative System. Any system for which the Department has issued design guidelines or which the Director judges to be a simple modification of a standard system.

03. Authorized or Approved. The state of being sanctioned or acceptable to the Director as stated in a written document.

04. Blackwaste. Human body waste, specifically excreta or urine. This includes toilet paper and other products used in the practice of personal hygiene.

05. Blackwater. A wastewater whose principal pollutant is blackwaste; a combination of blackwaste and water.

06. Board. Idaho State Board Of Environmental Quality.

07. Building Sewer. The extension of the building drain beginning five (5) feet outside the inner face of the building wall.

08. Central System. Any system which receives blackwaste or wastewater in volumes exceeding twenty-five hundred (2,500) gallons per day; any system which receives blackwaste or wastewater from more than two (2) dwelling units or more than two (2) buildings under separate ownership.

09. Construct. To make, form, excavate, alter, expand, repair, or install a system, and, their derivations.

10. Director. The Director of the Idaho Department of Environmental Quality or the Director's designee or authorized agent.

11. Existing System. Any system which was installed prior to the effective date of these rules.

12. Expand. To enlarge any nonfailing system.

13. Extended Treatment Package System (ETPS). An advanced subsurface package sewage treatment product that provides secondary wastewater treatment and/or tertiary wastewater treatment to septic tank effluent.

14. Failing System. Any system which exhibits one (1) or more of the following characteristics:

a. The system does not meet the intent of these rules as stated in Subsection 004.01.

b. The system fails to accept blackwaste and wastewater.

c. The system discharges blackwaste or wastewater into the waters of the State or onto the ground surface.

15. Ground Water. Any water of the state which occurs beneath the surface of the earth in a saturated geological formation of rock or soil.

16. High Groundwater Level -- Normal, Seasonal. High ground water level may be established by the presence of low chroma mottles, actual ground water monitoring or historic records.

a. The normal high groundwater level is the highest elevation of ground water that is maintained or exceeded for a continuous period of six (6) weeks a year.

b. The seasonal high groundwater level is the highest elevation of ground water that is maintained or exceeded for a continuous period of one (1) week a year.

17. High Water Mark. The line which the water impresses on the soil by covering it for sufficient periods of time to prevent the growth of terrestrial vegetation.

18. Individual System. Any standard, alternative or subsurface system which is not a central system.

19. Install. To excavate or to put in place a system or a component of a system.

20. Installer. Any person, corporation, or firm engaged in the business of excavation for, or the construction of individual or subsurface sewage disposal systems in the State.

21. Large Soil Absorption System. A large soil absorption system is a subsurface sewage disposal system designed to receive two thousand five hundred (2,500) gallons of wastewater or more per day, including where the total wastewater flow from the entire proposed project exceeds two thousand five hundred (2,500) gallons per day but the flow is separated into absorption modules which receive less than two thousand five hundred (2,500) gallons per day.

22. Limiting Layer. A characteristic subsurface layer or material which will severely limit the capability of the soil to treat or absorb wastewater including, but not limited to, water tables, fractured bedrock, fissured bedrock, excessively permeable material and relatively impermeable material.

23. Manufactured Medium Sand. Sand that meets the following gradation requirements:

Manufactured medium sand allowable particle size percent composition.
Sieve Size	Passing (%)
4	95-100
8	80-100
16	50-85
30	25-60
50	10-30
100	2-10
200	<2

24. Mottling. Irregular areas of different color in the soil that vary in contrast, density, number and size. Mottling generally indicates poor aeration and impeded drainage.

25. New System. A system which is or might be authorized or approved on or after the effective date of these rules.

26. Nondischarging System. Any system which is designed and constructed to prevent the discharge of blackwaste or wastewater.

27. Permit. An individual or subsurface system installation permit or installer's registration permit.

28. Pollutants. Any chemical, biological, or physical substance whether it be solid, liquid, gas, or a quality thereof, which if released into the environment can, by itself or in combination with other substances, create a public nuisance or render that environment harmful, detrimental, or injurious to public health, safety or welfare or to domestic, commercial, industrial, agricultural, recreational, aesthetic, or other beneficial uses.

29. Proprietary Wastewater System Technology. A manufactured product through which effluent flows and may be stored before infiltration.

30. Proprietary Wastewater Treatment System. A subsurface sewage treatment system that incorporates proprietary wastewater system technology to provide additional treatment to a septic tank effluent system.

31. Public System. Any system owned by a county, city, special service district, or other governmental entity or Indian tribe having the authority to dispose of blackwaste or wastewater; a municipal wastewater treatment facility.

32. Repair. To remake, reform, replace, or enlarge a failing system or any component thereof as is necessary to restore proper operation.

33. Scarp. The side of a hill, canyon, ditch, river bank, roadcut or other geological feature characterized by a slope of forty-five (45) degrees or more from the horizontal.

34. Service Provider. Any person, corporation, or firm engaged in the business of providing operation, maintenance, and monitoring of complex alternative systems in the state of Idaho.

35. Sewage. Sewage has the same meaning as wastewater.

36. Soil Texture. The relative proportion of sand, silt, and clay particles in a mass of soil.

37. Standard System. Any system recognized by the Board through the adoption of design and construction regulations.

38. Subsurface System. Any system with a point of discharge beneath the earth's surface.

39. Surface Water - Intermittent, Permanent, Temporary.

a. Any waters of the State which flow or are contained in natural or man-made depressions in the earth's surface. This includes, but is not limited to, lakes, streams, canals, and ditches.

b. An intermittent surface water exists continuously for a period of more than two (2) months but not more than six (6) months a year.

c. A permanent surface water exists continuously for a period of more than six (6) months a year.

d. A temporary surface water exists continuously for a period of less than two (2) months a year.

40. System. Beginning at the point of entry physically connected piping, treatment devices, receptacles, structures, or areas of land designed, used or dedicated to convey, store, stabilize, neutralize, treat, or dispose of blackwaste or wastewater.

41. Wastewater. Any combination of liquid or water and pollutants from activities and processes occurring in dwellings, commercial buildings, industrial plants, institutions and other establishments, together with any groundwater, surface water, and storm water that may be present; liquid or water that is chemically, biologically, physically or rationally identifiable as containing blackwater, grey water or commercial or industrial pollutants; and sewage.

42. Waters of the State. All the accumulations of water, surface and underground, natural and artificial, public and private or parts thereof which are wholly or partially within, which flow through or border upon the state of Idaho.

43. Water Table. The surface of an aquifer.

Notes

Idaho Admin. Code r. 58.01.03.003

Effective March 31, 2022