Agenda - Council - 05/13/2014 - Laserfiche WebLink

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13 INDIVIDUAL SUBSURFACE SEWAGE TREATMENT SYSTEMS 7080.1100 or 7083 it shall apply to other SSTS if referenced in later chapters. For the purposes of these standards, certain terms or words used are interpreted as follows: the words "shall" and "must" are mandatory and the words "should" and "may" are permissive. All distances specified in this chapter are horizontal distances unless otherwise specified. Subp. 2. Absorption area. "Absorption area" means the design parameter that is associated with the hydraulic acceptance of effluent. The absorption area for mound systems is the original soil below a mound system that is designed to absorb sewage tank effluent. The absorption area for trenches, seepage beds, and at -grade systems is the soil area in contact with the part of the distribution medium that is designed and loaded to allow absorption of sewage tank effluent. This includes both bottom and sidewall soil contact areas. Subp. 3. Agency. "Agency" means the Pollution Control Agency. Subp. 4. Alarm device. "Alarm device" means a device that alerts a system operator or system owner of a component's status using a visual or audible device. An alarm device can be either on site or remotely located. Subp. 5. Applicable requirements. "Applicable requirements" means: A. local ISTS ordinances that comply with parts 7080.2150, subpart 2, and 7081.0080, subparts 1 to 5; chapter 7082; and Minnesota Statutes, section 115.55; or B. in areas without complying ordinances to regulate ISTS, the requirements of this chapter. Subp. 6. At -grade system. "At -grade system" means a pressurized soil treatment and dispersal system where sewage tank effluent is dosed to an absorption bed that is constructed directly on original soil at the ground surface and covered by loamy soil materials. Subp. 7. Baffle. "Baffle" means a device installed in a septic tank to retain solids and includes, but is not limited to, vented sanitary tees with submerged pipes and effluent screens. Subp. 8. Bedrock. "Bedrock" means geologic layers, of which greater than 50 percent by volume consist of unweathered in -place consolidated rock or rock fragments. Bedrock also means weathered in -place rock which cannot be hand augered or penetrated with a knife blade in a soil pit. Subp. 9. Bedroom. "Bedroom" means, for the sole purpose of estimating design flows from dwellings, an area that is: A. a room designed or used for sleeping; or B. a room or area of a dwelling that has a minimum floor area of 70 square feet with access gained from the living area or living area hallway. Architectural features that affect the use as a bedroom under this item may be considered in making the bedroom determination. Subp. 10. Biochemical oxygen demand or BOD. "Biochemical oxygen demand" or "BOD" means the measure of the amount of oxygen required by bacteria while stabilizing, digesting, or treating biodegradable organic matter under aerobic conditions over a five-day incubation period, commonly expressed in milligrams per liter (mg/1). Subp. 11. Repealed, 35 SR 1353] Subp. 12. Carbonaceous biochemical oxygen demand or CBOD5. "Carbonaceous biochemical oxygen demand" or "CBOD5" means the measure of the amount of oxygen required by bacteria while stabilizing, digesting, or treating the organic matter under aerobic conditions over a five-day incubation Copyright ©2014 by the Rev so of Statutes, State of Minnesota. All Rights Reserved.