Agenda - Council - 05/24/2005 - Laserfiche WebLink

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f)NR Natural Heritage and Non-game Research Program Correspondence Reference No. ERDB ????? ???? occmTences are listed within a I mile radius of this site: '?.??? occurrences of Blanding's turtle (Emydoidea blandingii), a state-listed threatened species, and ?797 occurrence of'?'??. The project area is not in an ama known to he of state-wide importance to Blanding's turtles or an area where greater protection for turtles is desired. A flyer on Blanding's turtles provided by the DNR will be distributed to all project contractors. Turtles in imminent danger will bt: moved, by hand, out of harm's way. Otherwise, Blanding's turtles and.their nests will be left undisturbed. Silt fimcing will be put up around the construction site to keep turtles oui, and silt fence will be removed after the area has been i'evegetated. Care will be taken to fill any trenches dug to Place utilities, as trenches can trap turtles. t;',:rtilizer and pesticides will be minimized and sediment will be prevented from entering nearby streams and wedands. Vegetation management in infrequently mowed areas - such as ditches, along utility access roads, and under powar lines - should be done mechanically (chemicals should not be used). Work should occur fall through spring (after October 1~ and beibre June 1~). 12. Physical Impacts On Water'ReS0'urCes 'i: '.: '":i' :~:: . ':' " :':):i :ii:- . :.:":~:'. ; i:"'::' ~; :;~'i:17:''::.: Will the project involve the physical or hydrologic alteration, such as dredging, filling, stream diversion, outfatl structure, diking, and impoundment, of any surface waters such as a lake, pond, wetland, stream or drainage ditch? If yes, identify water resource affected and give the DNR Protected Waters Inventory number(s) if the water resources affected are on the PWI. Describe alternatives considered and proposed mitigation measures to minimize impacts. l)btR Promoted Wa[ers lnvcn~m7 Number(s). W~;d~nds o~ Ibc si[c will no[ bc impac[cd. ~cc public w~[crs on Figure 3 and wcdan~ on Fi~rc 6. 13. Water Use ' ': ' ' " ' .... '"- : i:. '::' :'::."! · Will the project involve installation or abandonment of any water wells, connection to or changes in any public water supply or appropriation of any ground or surface water (including dewatering) ? If yes, as applicable, give location and purpose of any new wells; public supply affected, changes to be made, and water quantities to be used; the source, duration, quantity and purpose of any appropriations; and unique well numbers and DNR appropriation permit numbers, if known. Identify any existing and new wellS on the site map: If there are no wells known on site, explain methodology used to determine. !_~ No I~ Yes [l:do~nestic water wells are found to be present witl'tin.minimum setbacks from the final alignment, they will be properly abandoned in accordance with Minnesota Department of Health (MDH) regulations regarding separation requirements. S(~il borings have not yet been completed in the sewer extension project area. Temporary dewatering may be needed in some areas in order to place the trunk sewer pipe at the required depths. Dewatering wells would be placed by the construction contractor based on the evaluation ofdewatefing needed. It is not yet known if the volumes of water would be such that a DNR Temporary Dewatering Permit would be required. Trench dams will be incorporated into the proj"e~} if necessary to prevent unintentional draining of wetland areas thma§h or near which the alignment passes. The spacing of trench dams would depend on observed ground water cm~didons. Soil borings will be used to check for horizontal confining layers creating a perched wetland ihat could -475-