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2 discovered, the identification and control of its consequences and the abatement of its source and migration. 4. The appropriate utilization of privy vaults and other non-water carried sewage collection and storage facilities. 5. The provision of technical assistance and education, plan review, inspections, SSTS surveys and complain investigations to prevent or control water-borne diseases, lake degradation, groundwater related hazards, and public nuisance conditions. Section 23. Authority. This Ordinance is adopted pursuant to Minnesota Statutes, Section 115.55; Minnesota Statutes, Section 145A.05; or successor Statutes, and Minnesota Rules, Chapter 7080, Chapter 7081, Chapter 7082, or successor rules. Section 34. Effective Date. The provisions set forth in this Ordinance shall become effective on passage by the City Council. Section 45. Definitions. The following words and phrases shall have the meanings ascribed to them in this Section. If not specifically defined in this Section, terms used in this Ordinance shall have the same meaning as provided in the standards adopted by reference. Words or phrases that are not defined here or in the standards adopted by reference shall have common usage meaning. For purposes of this Ordinance, the words “must” and “shall” are mandatory and the words “may” and “should” are permissive. 1. Absorption Area. 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. 2. Authorized Representative. An employee or agent of the City of Gem Lake.As-Builts. A set of drawings which to the fullest extent possible document the final as built location, size, and type of all SSTS components including the results of any materials testing performed and a description of conditions during construction of the system. 3. At-grade System. 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. 4. Authorized Representative. An employee or agent of the City of Gem Lake. 5. Bedrock. 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. 6. Bedroom. For the sole purpose of estimating design flows from dwellings, an area that is: 1. aA room designed or used for sleeping; or 2. aA 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 dete rmination. 7. Carbonaceous Biochemical Oxygen Demand or CBOD5. 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 period while in the presence of a chemical inhibitor to block nitrification. CBOD is commonly expressed in milligrams per liter (mg/l). Formatted: Font: Not Bold