07/25/2007 Env Bd Packet - Laserfiche WebLink

Home Search

Mr. James E. Studenski Page 4 July 18, 2007 Rice Creek Watershed District Rules City of Lino Lakes, Minnesota Flood Protection for Structures Current: Low floor elevations of all new construction maintain a separation of two feet (2') above the 100 -year event water elevation of a natural or artificial waterbody and 1 foot (1') above the emergency overflow of the waterbody. Within landlocked basins, lowest floor elevations must be at least one foot above the overflow elevation (Paragraph 30)). Proposed: All new structures and stormwater basins must be constructed so that the lowest floor and lowest entry elevations comply with the following table: The proposed rule would also revise the land locked basin low floor requirement to allow a structure to be permitted below the basin outlet if the low floor elevation is at least two feet (2') above the water level of both the 100 -year, 10 -day snowmelt and back -to -back 100 -year, 24 hour events (Paragraph 3(c)(v)). Rule D: Erosion Control Plans Current: A permit and an erosion control plan are required for new development, redevelopment, or additions to an existing site (Paragraph 2). Proposed: A permit and an erosion control plan is required for the grading, excavation, filling, or stockpiling of more than fifty(50) cubic yards of erosive material or the disturbance or removal of vegetation on five thousand (5,000) square feet or more of land. Farming activity would be excepted (Paragraph 2). Rule F: Wetland Alterations Current: Any proposed wetland disturbance not subject to WCA is evaluated by the RCWD under general criterion that prohibits activity that would "change the character" of a wetland without preserving wetland quantity, quality, and biological diversity (Paragraph 3(d)). Proposed: The proposed rule would subject such activities to specific WCA and additional criteria. The terms of RCWD regulation would further be refined as follows: Regional Elevations Local Detention Basins & Wetlands Infiltration Basins Mottled Soils 100 -yr EOF 100 -yr EOF Bottom 100 -yr EOF per borings Low Floor 2 -ft 1 -ft 0 -ft NA 0 -ft NA NA 3 -ft Low Entry NA NA 2 -ft 1 -ft NA 2 -ft 1 -ft NA The proposed rule would also revise the land locked basin low floor requirement to allow a structure to be permitted below the basin outlet if the low floor elevation is at least two feet (2') above the water level of both the 100 -year, 10 -day snowmelt and back -to -back 100 -year, 24 hour events (Paragraph 3(c)(v)). Rule D: Erosion Control Plans Current: A permit and an erosion control plan are required for new development, redevelopment, or additions to an existing site (Paragraph 2). Proposed: A permit and an erosion control plan is required for the grading, excavation, filling, or stockpiling of more than fifty(50) cubic yards of erosive material or the disturbance or removal of vegetation on five thousand (5,000) square feet or more of land. Farming activity would be excepted (Paragraph 2). Rule F: Wetland Alterations Current: Any proposed wetland disturbance not subject to WCA is evaluated by the RCWD under general criterion that prohibits activity that would "change the character" of a wetland without preserving wetland quantity, quality, and biological diversity (Paragraph 3(d)). Proposed: The proposed rule would subject such activities to specific WCA and additional criteria. The terms of RCWD regulation would further be refined as follows: