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8 <br /> <br />50. Toilet Waste. Waste commonly disposed of in toilets, including fecal matter, urine, toilet paper, and water <br />used for flushing. <br />23.51. Treatment Level. Treatment system performance levels defined in Minnesota Rules, Chapter <br />7083.4030, Table III for testing of proprietary treatment products, which include the following: <br />Level Parameters <br /> CBOD5 TSS O&G FC Nutrient <br /> (mg/l) (mg/l) (mg/l) (#/100ml) (mg/l) <br />A 15 15 - 1,000 - <br />A-2 15 15 - - - <br />B 25 30 - 10,000 - <br />B-2 25 30 - - - <br />C 125 60 - - - <br /> <br />52. Trench. A soil treatment and dispersal system, the absorption width of which is 36 inches or less. <br />24.53. Type I System. An ISTS that follows a standard trench, bed, at-grade, mound, or <br />graywater system design in accordance with MPCA rules, Minnesota Rules, Chapter 7080.2200 <br />through 7080.2240. <br />25.54. Type II System. An ISTS on a lot located in a floodplain, a privy or a holding tank in accordance <br />with MPCA rules, Minnesota Rules, Chapter 7080.2250 through 7080.2290. <br />26.55. Type III System. An ISTS having acceptable flow restriction devices to allow its use on a lot that <br />cannot accommodate a standard Type I soil treatment and dispersal system in accordance with MPCA rules, <br />Minnesota Rules, Chapter 7080.2300. <br />27.56. Type IV System. An ISTS, having an approved pretreatment device and incorporating pressure <br />distribution and dosing, that is capable of providing suitable treatment for use where the separation <br />distance to a shallow saturated zone is less than the minimum allowed in accordance with MPCA rules, <br />Minnesota Rules, Chapter 7080.2350 <br />28.57. Type V System. An ISTS, which is a custom engineered design to accommodate the site taking into <br />account pretreatment effluent quality, loading rates, loading methods, groundwater mounding, and other <br />soil and other relevant soil, site, and wastewater characteristics such that groundwater contamination by <br />viable fecal organisms is prevented in accordance with MPCA rules, Minnesota Rules, Chapter 7080.2400. <br />58. Unsewered Area. Any area within the Citycity not served by a municipal sanitary sewer collection system <br />permitted by the MPCA. <br />59. Wellhead Protection Area. The surface and subsurface area surrounding a well or well field that supplies <br />a public water system, through which contaminants are likely to move toward and reach the well or well <br />field as regulated under Minnesota Rules, cChapter 4720. For the purposes of this chapter, wellhead <br />protection area is that area bounded by the drinking water supply management area as regulated under <br />cChapter 4720. <br />Formatted Table