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5 Revised 10/03/2019 Ordinance Language Commentary 2.533 Impervious surface. A constructed hard surface that prevents or retards entry of water into the soil and causes water to run off the surface in greater quantities and at an increased rate of flow than prior to development, including rooftops; decks; sidewalks; patios; swimming pools; parking lots; concrete, asphalt, gravel driveways, or permeable pavers; and other similar surfaces. 2.534 Industrial use. The use of land or buildings for the production, manufacture, warehousing, storage, or transfer of goods, products, commodities, or other wholesale items. 2.535 Intensive vegetation clearing. The complete removal of trees or shrubs in a contiguous patch, strip, row, or block. 2.536 Lot. A parcel of land designated by plat, metes and bounds, registered land survey, auditors plot, or other accepted means and separated from other parcels or portions by said description for the purpose of sale, lease, or separation. 2.537 Lot width. The minimum distance between: A. Side lot lines measured at the midpoint of the building line; and B. Side lot lines at the ordinary high water level, if applicable (see Figure 4). Figure 4. Lot Width 2.538 Metallic minerals and peat. “Metallic minerals and peat” has the meaning given under Minnesota Statutes, Sections 93.44 to 93.51. 2.539 Nonconformity. Any legal use, structure or parcel of land already in existence, recorded, or authorized before the adoption of official controls or amendments to those controls that would not have been permitted to become established under the terms of the official controls as now written. 2.533. Optional definition. An impervious surface definition is not in rule, but is very helpful for administering the required impervious surface standards in Section 8.4 of this model. Gravel driveways are defined as impervious since soils become compacted after use and impair infiltration of water, and they are often eventually paved over by property owners and such work doesn’t usually require a permit. Permeable pavers are also included to eliminate their use as a “work around” to meeting impervious coverage standards in Section 8.4. Permeable pavement can reduce stormwater runoff, if maintained, but as a hard surface they remove habitat/vegetation and thus also impact shoreland aesthetics, both of which are shoreland protection goals.