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7 <br />"Septic Tank" is a watertight tank, with minimum capacity of 1,000 gallons, meeting the <br />minimum requirements laid out in Appendix B Design Standards. That shall receive the <br />discharge of sewage from a building sewer or preceding tanks, stores liquid for a detention <br />period that provides separation of solids from liquid and digestion of organic matter, and allows <br />the sewage effluent to discharge to a succeeding tank, treatment device or soil treatment area. <br /> <br />"Septic System Servicer" is any person or business, permitted by the North Dakota Department <br />of Health Division of Water Quality, who engages in the business of servicing septic systems, <br />cesspools, privies, chemical toilets, holding tanks, and similar devices that receive sewage, and <br />who deposits such materials at some location approved by the North Dakota Department of <br />Health. <br /> <br /> <br />"Setback" is a separation distance measured horizontally, unless otherwise noted. <br /> <br /> <br />"Sewage" means waste produced by toilets, sinks, bathing, laundry or culinary operations or the <br />floor drains associated with these sources, and includes household cleaners, medication and other <br />constituents in the sewage restricted to amounts normally used for domestic purposes. <br /> <br /> <br />"Sewage Effluent" is that liquid which flows from a septic tank under normal operation. <br />"Site" is the proposed on-site sewage treatment system area. <br />"Slope" is the ratio of vertical rise or fall to horizontal distance. <br /> <br /> <br />"Soil Boring" is any type of excavating capable of revealing in detail characteristics of soils <br />penetrated. <br /> <br />"Soil Texture Classification" is where soil particle sizes or textures are specified in these <br />regulations; they refer to the Guide for USDA Textural Classification. <br /> <br /> <br />"Soil Treatment Area" is an area where sewage effluent is dispersed in to the soil for treatment <br />and absorption and filtration and includes, but is not limited to trenches, seepage beds, at-grade <br />systems and mound systems. <br /> <br /> <br />"Soil Type" is the lowest unit in the natural system of soil classification; a subdivision of a soil <br />series and consisting of or describing soils that are alike in all characteristics including the <br />texture of the A Horizon. <br /> <br /> <br />"Standard System" an on-site sewage treatment system employing a septic tank and the soil <br />treatment system commonly known as seepage bed, trenches, at grade, or mound systems.