06-12-2002 Council Agenda - Laserfiche WebLink

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(Commentary: Two quick references of what is an existing identified wetland are the National Wetlands Inventory maps distributed by the U.S. Department of the Interior's Fish and Wildlife Service and the Minnesota Department of Natural Resources' maps of protected waters and wetlands.) Section 4.0 Storm Water Pollution Control Plan. Every applicant for a building permit, subdivision approval, or a permit to allow land disturbing activities must submit a storm water pollution control plan to the city engineer. No building permit, subdivision approval, or permit to allow land disturbing activities shall be issued until the city approves this plan. At a minimum these pollution abatement control practices must conform to those in the current version of the Minnesota Pollution Control Agency's publication, "Protecting Water Quality in Urban Areas." 4.1 General Policy on Storm Water Runoff Rates. For rivers and streams storm water discharge rates from storm water treatment basins shall not increase over the predevelopment two (2) year, ten (10) year and one hundred (100) year peak storm discharge rates, based on the last ten (10) years of how that land was used. Also accelerated channel erosion must not occur as a result of the proposed activity. For discharges to wetlands volume control is generally more important than discharge rate control. 4.2 The Storm Water Pollution Control Plan and the Grading Plan. The storm water pollution control plan's measures, the limit of disturbed surface and the location of buffer areas shall be marked on the approved grading plan, and identified with flags, stakes, signs etc. on the development site before work begins. 4.3 Inspections of the Storm Water Pollution Control Plan's Measures. At a minimum such inspections shall be done weekly by either the city, developer or the developer's designated representative, and after every storm or snow melt event large enough to result in runoff from the site 4.4 Minimum Requirements of the Storm Water Pollution Control Plan. The plan shall contain or consider: A.) The name and address of the applicant and the location of the activity. B.) Project description: the nature and purpose of the land disturbing activity and the amount of grading, utilities, and building construction involved. C.) Phasing of construction: time frames and schedules for the project's various aspects. D.) A map of the existing site conditions: existing topography, property information, steep slopes, existing drainage systems /patterns, type of soils, waterways, wetlands, vegetative cover, one hundred (100) year flood plain boundaries, locations of existing and future