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Coverage issued: October 28, 2021
<br />Permit expires: November 15, 2025
<br />M5400047
<br />Page 24 of 28
<br />27.28
<br />"Pipe" means a closed manmade conveyance device used to transport stormwater from location to location. The definition
<br />of pipe does not include foundation drain pipes, irrigation pipes, land drain tile pipes, culverts, and road sub -grade drain
<br />pipes. [Minn. R. 7090]
<br />27.29
<br />"Receiving Water" means any lake, river, stream or wetland that receives stormwater discharges from an MS4.
<br />[Minn. R. 7090]
<br />27.30
<br />"Reduce" means reduce to the Maximum Extent Practicable (MEP) unless otherwise defined in the context in which it is
<br />used. [Minn. R. 7090]
<br />27.31
<br />"Seasonally Saturated Soil" means the highest seasonal elevation in the soil in a reduced chemical state because of soil
<br />voids filled with water causing anaerobic conditions. Seasonally saturated soil is evidenced by the presence of
<br />redoximorphic features or other information determined by scientifically established methods or empirical field
<br />measurements. [Minn. R. 7090]
<br />27.32
<br />"Section" includes all item numbers of the same whole number. For example, "Section 5" of the General Permit refers to
<br />items 5.1 through 5.5. [Minn. R. 7090]
<br />27.33
<br />"Significant Materials" includes, but is not limited to: raw materials, fuels, materials such as solvents, detergents, and
<br />plastic pellets; finished materials such as metallic products; raw materials used in food processing or production; hazardous
<br />substances designated under Section 101(14) of the Comprehensive Environmental Response, Compensation, and Liability
<br />Act (CERCLA); any chemical the facility is required to report pursuant to Section 313 of the Emergency Planning and
<br />Community Right -to -Know Act (EPCRA); fertilizers, pesticides, and waste products such as ashes, slag, and sludge that have
<br />the potential to be released with stormwater discharges. When determining whether a material is significant, the physical
<br />and chemical characteristics of the material should be considered (e.g. the material's solubility, transportability, and toxicity
<br />characteristics) to determine the material's pollution potential. [40 CFR 122.26(b)(12)]
<br />27.34
<br />"Small Municipal Separate Storm Sewer System" or "small MS4", means all separate storm sewers that are:
<br />a. Owned or operated by the United States, a state, city, town, borough, county, parish, district, association, or other publ is
<br />body (created by or pursuant to state law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or
<br />other wastes, including special districts under state law such as a sewer district, flood control district or drainage district,
<br />or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management
<br />Agency under section 208 of the CWA that discharges to waters of the United States.
<br />b. Not defined as "large" or "medium" Municipal Separate Storm Sewer Systems pursuant to 40 CFR 122.26
<br />paragraphs (b)(4) and (b)(7) or designated under paragraph (a)(1)(v).
<br />c. This term includes systems similar to separate storm sewer systems in municipalities, such as systems at military bases,
<br />large hospital or prison complexes, and highways and other thoroughfares. The term does not include separate storm
<br />sewers in very discrete areas, such as individual buildings. [Minn. R. 7090]
<br />27.35
<br />"Stormwater" means stormwater runoff, snow melt runoff, and surface runoff and drainage. [Minn. R. 7090.0080, subp. 12]
<br />27.36
<br />"Stormwater flow direction" means the direction of predominant flow within a pipe. Flow direction can be discerned if pipe
<br />elevations can be displayed on the storm sewer system map. [Minn. R. 7090]
<br />27.37
<br />"Stormwater Pollution Prevention Program" or "SWPPP" means a comprehensive program developed by the permittee to
<br />manage and reduce the discharge of pollutants in stormwater to and from the small MS4. [Minn. R. 7090]
<br />27.38
<br />"Structural Stormwater BMP" means a stationary and permanent BMP that is designed, constructed, and operated to
<br />prevent or reduce the discharge of pollutants in stormwater. [Minn. R. 7090]
<br />27.39
<br />"Total Maximum Daily Load" or "TMDL" means the sum of the individual Waste Load Allocations for point sources and load
<br />allocations for nonpoint sources and natural background, as more fully defined in 40 CFR 130.2, paragraph (i). A TMDL sets
<br />and allocates the maximum amount of a pollutant that may be introduced into a water of the state and still assure
<br />attainment and maintenance of water quality standards. [Minn. R. 7052.0010, subp. 42]
<br />27.40
<br />"Waste Load Allocation" or "WLA" means the portion of a receiving water's loading capacity that is allocated to one of its
<br />existing or future point sources of pollution, as more fully defined in Code of Federal Regulations, title 40, section 130.2,
<br />paragraph (h). In the absence of a TMDL approved by USEPA under 40 CFR 130.7, or an assessment and remediation plan
<br />developed and approved according to Minn. R. 7052.0200, subp. 1(C), a WLA is the allocation for an individual point source
<br />that ensures that the level of water quality to be achieved by the point source is derived from and complies with all
<br />applicable water quality standards and criteria. [Minn. R. 7052.0010, subp. 45]
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