10/27/2004 Env Bd Packet - Laserfiche WebLink

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• Site Management • A generalized sequence schedule was submitted with the drawings. There was not a tree inventory and preservation plan submitted at the time of this writing. A detailed plan for erosion control should be submitted. This plan should include a plan to fix or install silt fence when fence becomes one -third full, and extra stockpile of rock on site to top dress rock entrances when entrance rock becomes soil filled. The plan should include a plan to avoid soil compaction in all non- disturbed areas, and in created surface water treatment, infiltration areas. If soils become compacted in areas that do not need compaction, than the soil should be loosed before landscaping. The plan should state that no soil would be hauled on to the site or off the site without City approval. Native plant restoration seed should be planted at the time of quick growing soil stabilization seed is applied. Surface water Plan Onsite and NURP are proposed to be installed on the 896 to 900 survey elevations. The Anoka County Soil Survey indicates that the Zimmerman C Fine Sands have a depth of > 6 ft to the seasonally high water table (Attachment 3). Looks like infiltration will work here. Suggest that the developer reduce the NURP, maybe shallow it out (so that it can be called and managed as a rain garden) and combine it with some additional surface water features, that would be acceptable to RCWD, such as rain gardens off of the parking areas, swales to a designed rain garden where the present NURP is, and pervious parking. Again, suggest moving the on -site treatment system to a higher elevation on the Lake Drive end. All Surface water treatment areas should be planted with the City Native Seed Specifications, and planted and maintained by a nursery that specializes in Native seed management for a minimum of 3 years. Lighting Plan A lighting plan is submitted as Attachment 4. The zoning standard is the light shall not exceed 0.4 -ft candles at residential property lines, and 1 -ft candle at mid street lines. The lighting plan demonstrates that these criteria are met. The developer's application information submittal does not include pictures or specifications for the types of lighting to be used. As per previous Environmental Board recommendations the developer should use low profile, downward focused, recessed light boxes that are low impact to sight glare issues. The Environmental Board may wish to recommend the establishment of a "lights off' after service clause to the approvals.