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10.0 Storm Drainage Plan <br />These is no storm drainage system within Gem Lake other <br />than ditches alongside roads within the corporate limits, <br />Two portions of the City of Gem Lake drain internally into <br />depressions with no surface outlet. The most critical of <br />these is the basin draining into Gem Lake and its attendant <br />wetlands. <br />Storm Drainage Policies <br />A. The City will attempt to restrict or minimize additional <br />storm water runoff into the Gem Lake Basin, in order to <br />protect the water quality of this area. Particular attention <br />should be placed on water retention to settle out undesirable <br />sediments and to minimize siltation. Impervious areas <br />should be restricted within 100 feet of Gem Lake (water <br />body) and its wetlands. <br />B. Surface water drainage into the north pond will be <br />encouraged, recognizing that this pond has minimal <br />ecosystem value and may be more attractive if higher water <br />levels are maintained. <br />C. Cooperative agreements with White Bear Township, <br />White Bear Lake, and Vadnais Heights for surface drainage <br />easements will be sought as needed. <br />D. Storm sewer connections will be required, where <br />available, on new road construction, as an alternative to <br />ditches. <br />E. Storm sewerage in all commercially developed portions <br />of the community will be required. <br />F. Residents of Gem Lake will be notified of the <br />Environmental Protection Agency (EPA) and Minnesota <br />Pollution Control Agency (MPCA) goals to reduce storm <br />water run-off by 40%. Information will be provided on best <br />management practices to achieve this goal. <br />G. The Nationwide Urban Runoff Program (NURP) design <br />standards for new storm water ponds will be adopted. When <br />applied, these standards reduce the contaminant loadings <br />from surface water runoff. <br />City of Gem Lake Comprehensive Plan I page 10-1 <br />