|
Best M~a~nent Practices ~BMP's~ means erosion and sediment control and water quality
<br />management practices that are the most effective and practicable means of controlling,
<br />preventing, and m;tZmi~ing the degradation of surface water, including
<br />construction-phasing, m;n;mi~.;ng the length of time soil areas are exposed, prohibitions,
<br />and other management practices published by state or designated area-wide planning
<br />agencies. (Examples of BMP's can be found in the current versions of the Minnesota
<br />Pollution Control Agency's publications, "Protecting Water Quality in Urban Areas," and,
<br />"Storm-Water and Wetlands: Planning and Evaluation Guidelines for Addressing Potential
<br />Impacts of Urban Storm-Water and Snow-Melt Runoff on Wetlands," the United States
<br />Environmental Protection Agency's, "Storm Water Management for Construction
<br />Activities: Developing Pollution Prevention Plans and Best Management Practices," (as a
<br />reference for BMP's) and the Minnesota Department of Transportation's, "Erosion Control
<br />Design Manual.")
<br />B~ means a protective vegetated zone located adjacent to a natural resource, such as a
<br />water of the state, that is subject to direct or indirect human alteration. Such a buffer strip is
<br />an integral part of protecting an aquatic ecosystem_through filtering, pollutants and
<br />providing adjacent habitat. The width of a buffer strip is the width along each bank of a
<br />stream. Therefore, a 30-foot wide stream with 100 foot buffer strips has a total width of 230
<br />feet. Acceptable buffer vegetation includes preserving existing predevelopment vegetation
<br />and/or planting locally distributed native Minnesota trees, shrubs and grassy vegetation.
<br />Alteration of buffers is strictly limited. Buffer areas are designated with permanent markers.
<br />means a person, firm, corporation, sole proprietorship, partnership, state agency,
<br />or political subdivision thereof engaged in a land disturbance 'activity.
<br />13~means the release, conveyance, channeling, runoff, or drainage, of storm water,
<br />including snowmelt, from a construction site.
<br />Ener~si~iztum means the methods employed at pipe outlets to prevent erosion.
<br />Examples include, but are not limited to; aprons, riprap, splash pads, and gabions that are
<br />designed to prevent erosion...
<br />Erosion means any process that wears away the surface of the land by the action of water,
<br />wind, ice, or gravity. Erosion.. can be accelerated by the activities of people and nature.
<br />Erosion Contfvl Refers to methods employed to prevent erosion. Examples include soil
<br />stabilization practices„.horizontal slope grading, temporary or permanent cover, and
<br />construction phasing.
<br />Erosion mul Ss~nent Practice Sped ar Practice means the management procedures,
<br />techniques, and methods to control soil erosion and sedimentation as officially adopted by
<br />either the state, county, city or local watershed group, whichever is more stringent.
<br />Exposed Soil Areas means all areas of the construction site where the vegetation (trees,
<br />shrubs, brush, grasses, etc.) or impervious surface has been removed, thus rendering the
<br />soil more prone to erosion. This includes topsoil stockpile areas; borrow areas and
<br />2
<br />
|