01-16-1996 Planning Packet - Laserfiche WebLink

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Zoning File #2102 January 10, 1996 Page 2 H-2- I-l - 1-2 - 1-3 J K L M N O P Q R S T U - Construction Plan - Revised 1/8/96 J. Anderson Wetland Delineation Report Map Wetland Determination Information Topographic Map 2' Contours Designated Wetland Map Oroi.o Orchard Highlands Plat Silt Fence Specs Seeding Information Excerpt "Principles of Landscaping for Wildlife" DNR/Wetland Map National Wetland Inventory Map U S. Soils Map/Soils Legend Septic Map DNR-Model for Good Basin Design Gustafson Report Description of Request The Orono Orchards Highland plat was approved by the City in December of 1975. Review Exhibits J, K and L, final plat shows a slight encroachment of a designated wetland at the southeast comer of the property. Staff has no record of a flowage and conservation easement being taken over the designated wetland. In reviewing the topographic map and wetlands map, it would appear that the original wetland was designated at the 958 elevation. Refer to Exhibit G, the new wetlands delineation information notes the existence of a Type 3 wetland to the west of the original 958 elevation. In the 1975 plat, the wetland was not defined in angles and bearings. Staff would suggest that the new wetland be redefined along the edge of the Type 3 wetland. Refer to Exhibits I-1, 2 and 3 for the location of the newly defined Type 1 and 3 wetland areas. To be consistent with the City’s policy, the Type 1 wetland may be protected with a private covenant. The City would ask for a consolation and flowage easement over the redefined designated wetland (area at or below 958 elevation and Type 3 wetland to west of 958 elevation). The wetland is contiguous with a 30 acre wetland system to the east and south. Applicant has provided photos of the wetland area confirming the predominant growth of Purple Loosestrife in the main areas of the wetland. The wetland area to be altered is in a transitional area. Refer to present situation in Exhibit C, vegetation consists of 40% Purple Loosestrife, 40% lake sedge and 20% cattail. Refer to Exhibit D, in John Anderson's comments he notes "Purple Loosestrife is a dominant species in the interior of the wetland. Reed Canary Grass is common along the margins of the wetland." Purple Loosestrife is an invasive aquatic weed that chokes out desirable native vegetation. It would be the same for the Canary Reed Grass that destroys the natural and native vegetation associated with a healthy, thriving wetland.