01/31/2007 Env Bd Packet - Laserfiche WebLink

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• • Rare and Unique Resources There are no recorded rare, threatened or endangered species on this site. Parks, Natural Open Space/ Greenways and Trail System Plan: The City's Plan identifies a potential greenway and trail extension across the northern portion of the site. Wetlands: One wetland is located on the NW side of the property. The wetland delineation was approved previously by Rice Creek Watershed District (RCWD). This delineated wetland is highly impacted. The wetland is inundated with Buckthorn and other noxious plants. It is recommended that that the developer be responsible for all noxious plant removals on the property. This wetland should be cleared /killed of all buckthorn and other noxious plants No direct permanent wetland impacts are proposed. However, temporary impacts are proposed in conjunction with the installation of a storm sewer outlet. Care should be given to ensuring a minimum disturbance and that the existing soils are indeed placed back on top of the pipe. Soils in the wetland will most likely be exposed when noxious plants are removed. The City native seed mix should be used to restore the wetland, as well as all disturbed infiltration pond, swale and wetland areas. No buffer is proposed around the wetland. The City's subdivision ordinance requires a minimum 10 foot buffer be provided. A trail and parking lot are proposed immediately adjacent to the existing wetland. These proposed structures should be relocated to provide the minimum buffer. No direct drainage to the wetland from impervious areas is allowed. Proposed drainage plans indicate direct runoff from impervious surfaces to the wetland. Drainage patterns should be corrected. Soils The soils on the site proposal are upland, non - wetland types of soils, except where the wetland was delineated in the NW corner. The upland soils are highly permeable and should be used to the greatest extent possible to infiltrate storm water. On the other hand, precautions should be taken with these soils when proposing fueling stations and that there is no potential to contaminate ground water. This site does propose a fueling station. A fueling site spill containment area • should be designed into the plan if this fueling station goes forward.