20231227 Environmental Board Packet Combined

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construction of an infiltration basin that will run along the west and south perimeters of the northern lot. Land Cover Pre-settlement land cover (Marschner) was aspen-oak land, an oak-dominated transitional area between deciduous forest and prairie. Current land cover (Minnesota Land Cover Classification System) on the site includes mostly planted mixed coniferous/deciduous trees with 11-25% impervious cover, aspen forest — saturated soils in the north portion of the site, and 11-25% impervious cover - exposed earth. The tree survey identified a mix of planted oak, poplar, elm, pine, spruce, and a crabapple. Rare, Unique, or Significant Resources Blanding's turtle (Emydoidea blandingii) has been observed within a one-mile radius of the site. Highways, roads, and other development separate the project site from suitable habitat for this species. Any sightings of this species, while unlikely, should be reported to City staff so that the turtles can be safely relocated. Project-related impacts to this species are unlikely, and additional protection measures are not required. While several rare, threatened, or endangered plants have been observed within a mile of the project site, the suitable habitat for these species is separated from the project site by roads, houses, and other development. The plants are unlikely to be found on or near the site, which has been mowed and maintained as turfgrass for many years. No additional surveys should be required. Soils The Natural Resource Conservation Service Web Soil Survey notes the following soil types on the project site: Zimmerman fine sand on 2-6 % slopes. This is a hydrologic group A soil that is excessively drained with rapid permeability and negligible to low surface runoff. Soderville fine sand on 0-3 % slopes. Also a hydrologic group A soil that is moderately well drained. Permeability is rapid to moderately rapid with negligible runoff. 2