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Effective April 28, 2015 Chapter Four Subsurface Sewage Treatment System Regulations (75) New construction. "New construction" means installing or constructing a new ISTS or altering, extending, or adding capacity to a system that has been issued an initial certificate of compliance. (76) Notice of noncompliance. "Notice of noncompliance" means a document written and signed by a certified inspector after a compliance inspection that gives notice that an ISTS is not in compliance with this Chapter. (77) O&G. "O&G" means oil and grease, a component of sewage typically originating from foodstuffs such as animal fats or vegetable oils or consisting of compounds of alcohol or glycerol and fatty acids such as soaps and lotions, typically expressed in mg/L (also known as FOG, or fats, oil and grease). (78) Operating permit. "Operating permit' means the permit issued to the owner of an SSTS that requires an operating permit as described in Section 7. (79) Ordinary high water level. ""Ordinary high water level" means the boundary of public waters and wetlands, and shall be an elevation delineating the highest water level which has been maintained for a sufficient period of time to leave evidence upon the landscape, commonly that point where the natural vegetation changes from predominantly aquatic to predominantly terrestrial. For watercourses, the ordinary high water level is the elevation of the top of the bank of the channel. For reservoirs and flowage, the ordinary high water level is the operating elevation of the normal summer pool. On lakes with an established ordinary high water level by the Minnesota Department of Natural Resources, that elevation shall be considered the ordinary high water level. (80) Original soil. "Original soil" means naturally occurring soil that has not been cut, filled, moved, smeared, compacted, altered, or manipulated to the degree that the loading rate must be reduced from that associated with natural soil conditions. (81) Other establishment. "Other establishment' means any public or private structure other than a dwelling that generates sewage that discharges into an ISTS or MSTS. (82) Other pit. "Other pit' means any pit or other device designed to leach sewage effluent that is greater than 30 inches in height or has a bottom area loading rate of sewage greater than two gallons per square foot per day. (83) Owner. "Owner" means any person having possession of, control over, or title to property with an SSTS. (84) Parent material. "Parent material" means the unconsolidated and chemically weathered geologic mineral or organic matter from which soils are developed through soil forming processes. (85) Percolation rate. "Percolation rate" means the rate of a drop of water infiltrating into a test hole as specified in Section 9.7 (2). (86) Periodically saturated soil. "Periodically saturated soil' means the highest elevation in the soil that is in a reduced chemical state due to soil pores filled or nearly filled with water causing anaerobic conditions. Periodically saturated soil is determined by the presence of redoximorphic features in conjunction with other established indicators as specified in Section 9.6 (5) or (6), or determined by other scientifically established technical methods or empirical field measurements acceptable to the local unit of government in consultation with the Department or the commissioner. (87) Permit. "Permit' means a permit issued for the construction, replacement, repair, alteration, extension, operation or maintenance of a subsurface sewage treatment system, or a permit issued by the Agency. . (88) Permittee. "Permittee" means a person who is named on a permit issued pursuant to these regulations. (89) Plastic limit. "Plastic limit' means the soil moisture content above which manipulation will cause compaction or smearing. The plastic limit can be measured by American Society for Testing and Materials, Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils, ASTM D4318 (2005). The standard is incorporated by reference, is available through the Minitex interlibrary loan system, and is not subject to frequent change. 15 Washington County Development Code