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or wetland species, 16" DBH or greater, or 24" or greater stump diameter. <br />V. Industrial discharge - the discharge of industrial process treated wastewater or <br />wastewater other than sewage. Stormwater shall not be considered to be an <br />industrial wastewater unless it is contaminated with industrial wastewater. <br />Industrial discharge includes: <br />1. wastewater resulting from any process of industry or manufacture, or <br />from the development of any natural resource; <br />2. wastewater resulting from processes of trade or business, including <br />wastewater from laundromats and car washes, but not wastewater from <br />restaurants; or <br />3. wastewater discharged from a municipal wastewater treatment plant <br />requiring a pretreatment program. <br />W. Intermittent stream- a well defined channel that contains water for only part of <br />the year, typically during winter and spring when the aquatic bed is below the <br />water table. The flow may be heavily supplemented by stormwater runoff. An <br />intermittent stream often lacks the biological and hydrological characteristics <br />commonly associated with the continuous conveyance of water. <br />X. Land - disturbing activity- any use of the land that results in a change in the <br />natural cover or topography that may cause or contribute to sedimentation. <br />Y. Major variance- a variance from the minimum statewide watershed protection <br />rules that results in the relaxation, by a factor greater than five percent, of any <br />buffer, density, or built upon area requirement under the high density option; any <br />variation in the design, maintenance, or operation requirements for a wet <br />detention pond or other approved stormwater management system; or relaxation <br />by a factor greater than ten percent, of any management required under the low <br />density option. <br />Z. Minor variance- a variance from the minimum statewide watershed protection <br />rules that results in the relaxation, by a factor up to five percent, of any buffer, <br />density, or built upon area requirement under the high density option; or that <br />results in a relaxation, by a factor up to ten percent, of any management required <br />under the low density option. <br />AA. � Modified natural stream- an on -site channelization or relocation of a <br />stream channel and subsequent relocation of the intermittent or perennial flow as <br />evidenced by topographic alterations in the immediate watershed. A modified <br />natural stream must have the typical biological, hydrological and physical <br />characteristics commonly associated with continuous conveyance of water. <br />BB. Nonpoint source pollution- pollution which enters waters mainly as a <br />result of precipitation, and subsequent runoff from lands which have been <br />disturbed by human's activities, and includes all sources of water pollution which <br />are not required to have a permit in accordance with G.S. 143- 215.1(c). <br />CC. Nutrient sensitive waters - those waters which are so designated in the <br />4 <br />