02/25/2004 Env Bd Packet - Laserfiche WebLink

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have found, and continue to find, some of these rare plant communities in areas that have indicators present. Some of these areas can be smaller and inside the original MLCCS polygon shapes. This site has these indicators around the Southern wetland areas, and on properties to the immediate West. Please refer to Attachment 6. Generally, the indicators are comprised of combinations of muck, isanti wet, and upland sand soils that are banded together usually in a flood plain. Usually cattails are present in the muck soils, with aspen on the buffering edge of the wet/dry upland soils. A winter field survey indicates a disturbed soil with reed canary grass for the most part in areas of concern. Seed banks can however remain for a long time in these wet areas. It is recommended to perform a field survey in the spring when vegetation is emerging to verify the presence of absence of rare plants. Precautions to preserve these areas from construction disturbance should be taken if possible. All surface water should be treated before discharge into wetlands in this area or to areas to the west property. Surface water There are no wetland fill areas shown. Surface water on the North side residential area is diverted a swale /NURP pond on Tots 10 and 11. Lots 6, 7, and 8 should have something to filter the water before being discharged to wetlands to the West. Nitrogen and phosphorous transport off the site to the west should be minimized as much as possible. Impervious street water is discharged to the swale /NURP ponds on Tots 10 and 11. Aspen along back side of lots 1,2,3,4,5,6, should be preserved as much as possible as a wetland buffer to surface water coming off of these lots. Since the trees are not superimposed on the grade plan, and a tree preservation plan has not yet been developed, it is difficult to see how much of this buffer will be lost. The soils in this area (Attachment 7) are wet. Future homeowners will be subject to this as wet for most of the year. If buffering Aspen were lost to grading, then additional swale -ing on the East Side of Block 1 would help to contain runoff nutrients from lots. Recommend verification to future lot owners of wet situations in all isanti wet soil areas. Preexisting conditions should show the pond on the North side of the Northern most wetland, and in the Southern delineated wetlands. Wildlife The Blandings turtle model does not indicate any breeding or activity areas on or near this site. The natural grass areas would indicate a possible habitat for Bull snake. There are no known or documented references to Bull snake on this site. There is no other known unique wildlife habitat areas on or in close proximity to this site. Soils