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APPENDIX B. DEPIN[TCONS <br />1. "Best Management Practices (BMPsI" means erosion and sediment control and water ~----- Formatted: Burets and Number ~. <br />qualicv management practices that are the most effective and practicable means of <br />conu•olline preventing andminimiiingdegradationofsurfacewater includingavoidanc° <br />of impacts construction-phasing minimising the length of time soil areas are exposed <br />prohibitions, and other management practices published by state or designated area-wide <br />planning agencies <br />[ndividual BMPs found in Phis permit are described in the current version of Protecting <br />Water Quality in Urban Areas. Minnesota Pollution Control Aeencv 2000 BMPs must be <br />adapted to the site and can be ado fed from other sources. 1-Iowever the must be similar in <br />purnose and at least as effective and stringent as MPCA's BMPs (Other sources include <br />manufactw~rs specifications. Stm•m Water Manaeement for Construction Acfivities: <br />Develoiing Pollution Prevention Pians and Best Management Practices. U.S. <br />Environmental Protection Agency 1992 and Erosion Control Design Manual Minnesota <br />Department of Transportation et al 19931 <br />2. "Commissioner" means [he Commissioner of the Minnesota Pollution Conuol A encv or •-~--- Formatted: Bullets and Numbering <br />the Commissioner's designee. <br />"Common Plan of Development or Sale" means a contiguous area where multiple separate •--- Formatted: Ballets and Numbering <br />and distinct land disturbing activities may be taking place at different times on different <br />schedules but under one proposed plan One pl2n is broadly defined to include design <br />permit application. advertisement or physical demarcation indicating that land-disturbing <br />activities may occw'. <br />4. "Construction Activity" For this Hermit. construction activity includes constriction ~~~--~ Formatted: Bullets and Numbering ; <br />activity as defined in 40 C.F.R. part 122 26(bl(141(e) and small constrnefion acfivify~s <br />defined in 40 C.F.R. part 122.26(bl(1 ~1. This includes a disturbance [o [he land that results in <br />a change in the topography existing soil cover (both vegetative and non-vegetati~ el or the <br />existing soil topography that may result in accelerated storm water runoff: leading to soil <br />erosion and movement of sediment into sm•face waters m' drains e systems. Exam les of <br />construction activity may include clearinggrading filling and excavating Consh•uetion <br />activity includes the disturbance of less than one acre of total land area that is a Hart of a <br />larger common plan of development or sale if the larger connnon plan will ultimately <br />disturb one (I1 aa'e or more. <br />>. "Dewatering" means the removal of water for construction activity It can be a discharve ~~---- Formatted: Bullets and Numbering <br />of appropriated sw'face or groundwater to dry and/or solidify a consn•uction site It may <br />require Minnesota Denartment of Natural Resowroes permits to be appropriated and if <br />contaminated may require other MPCA permits to be discharged <br />6 "Energy Dissipation" means methods employed at pipe outlets to prevent erosion Exam~t--'-' Formattetl: Bullets and Numbering <br />include, but are no[ limited to: concrete aprons, ripran. splash pads, and eabions that are <br />deli nt;_ed to prevent erosion. <br />7. "Erosion Prevention" means measures em Io ed to revert erosion includin but not <br />limited to: soil stabilisation practices, limited grading mulch, temporary or permanent <br />cover, and construction phasing. <br />8. 'Tina) Stabilization" means that either <br />'--~~--- Formatted: Bulletr and Numbering) <br />24 <br />