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1n. Plans & Specs for Lake Drive East 1 , ... . CITY OF 1 , I . , . , _, 1 , e . „ , CHANHASSEN • „. , . , . n . , • •if 690 COULTER DRIVE • P.O. BOX 147 • CHANHASSEN, MINNESOTA 55317 (612) 937-1900 • FAX (612) 937-573n by c+ ,Administrator Endorsed ✓ lkt_k MEMORANDUM Mecat)d___ I Rejected Date te 3 -/ c7 TO: Don Ashworth, City Manager m-_ Date Submitted to Commission I FROM: Gary Warren, City Engineer Date Submitted to to Comet] DATE: March 7 , 1990 ______1 _ -..2.1._ I SUBJ: Approve Plans and Specifications for Lake Drive East from Dakota Avenue to Dell Road, Project No. 89-6A; Authorize Advertising for Bids IIThe attached construction plans have been prepared as directed by the City Council at its November 9, 1989 meeting. The plans have II been prepared in concert with a number of activities which are occurring at the same time in this area, namely MnDOT design of the Trunk Highway 5 improvements including the extension of Dell I Road south and Dakota Avenue, site plan improvements for the McDonald' s site and site development and long-range planning for the Datasery (Sunlink ) property. IThe project scope includes the construction of a 36-foot wide collector roadway with concrete curb and gutter, street lights and a concrete walk on the north side 'of the roadway from Dakota I Avenue to Dell Road. The road has been designed in compliance with MnDOT standards and as such parking is to be prohibited on the south side of the roadway. 1 The McDonald's site plan expansion is being done partly to provide tractor trailer parking stalls on the McDonald's property which should greatly alleviate the congestion and parking Idifficulties which currently exist in this portion of the roadway. Similarly, the roadway alignment through the existing portion of Lake ' Drive East will - be improved geometrically to I reduce the sharpness of the curves in this area in order to bring the road into compliance with MnDQT' s State-Aid standards. I The revised construction cost estimate for this project is $751 ,416. This is approximately $50,000 above the feasibility study estimate due to the addition of 510 feet of 42-inch storm sewer which was deleted from the Trunk Highway 5 , MnDOT project. II Sanitary sewer, watermain, one-half of the storm sewer and a portion of the roadway are intended to be assessed against the II I II Don Ashworth II March 7 , 1990 Page 2 I benefitting properties, primarily the Datasery property. The remaining project costs are to be covered through a combination of participation by MnDOT with its cooperative agreement on Trunk IHighway 5 and funds from the tax increment district. There are two minor wetland impacts which will require a wetland I alteration permit. These are identified in the attached February 21 , 1990 letter from OSM and result in approximately 1/2 acre of wetland which will be lost as a result of these improvements . Mitigation is intended to be included in the City' s Eckankar pond Iproject near County Road 17 and Trunk Highway 5. Similar to the MnDOT project, the schedule has slipped slightly I on the Lake Drive East project; however, we still are intent on bidding this project at this time. We anticipate a bid opening date of April 13 , 1990 with a construction start-up as soon as I road restrictions are removed in May. It is therefore recommended that the attached construction plans for the Lake Drive East project from Dakota Avenue to Dell Road I be approved and authorized for bidding. It is further recommended that a no parking zone be established for the south side of this roadway from Dakota Avenue to Dell Road. 1 ktm Attachments: 1. Plans . I 2 . February 21 , 1990 letter from OSM. c: Bud Osmundson, OSM I I I I I I 1 Orr - Schelen _ s Mayeron& IF Associates,Inc. 2021 East Hennepin Avenue Minneapolis,MN 55413 612-331-8660 FAX 331-3806 Engineers Surveyors Planners CITY OF CHANHASSEN I February 21, 1990 EOM FEB 26 1990 Ms. JoAnn Olsen ENGINEERING DEPT. Senior Planner City of Chanhassen 690 Coulter Drive Chanhassen, MN 55317 RE: Lake Drive East, Wetland Impact FEB 2 6 1990 OSM Comm. No. 4358 CITY_OF.CHANHASSEN Dear Ms. Olsen: The City of Chanhassen is proposing to improve Lake Drive East from its point ' of intersection with Dakota Avenue to a point 900 feet east of this intersection. Existing utilities in the area will also be improved, and a limited amount of wetland alteration will result from these improvements. This letter is written in support of a wetland alteration permit. The permit application is attached. The existing land use in the vicinity is vacant and is zoned for commercial/industrial uses. All of the vacant land is surrounded by established development. Improved Lake Drive East will cross three different types of landscape and will impact wetland, as well as upland grass areas and woodland. A site visit has been made and the wetland areas have been identified and located ' as a result of an on-site investigation. There are two primary areas of upland wetland that will be impacted. These areas have been staked in the field, mapped and depicted as Area A - West and Area B - East on exhibit 1. Information on the west and east wetland is provided below. AREA A - WEST A total of 14,375 square feet of wetland is present in the Area A - West. There are three different types of wetland located here including Type 2 - inland fresh meadow, Type 3 - inland shallow fresh marshes, and Type 6 - shrub swamp. 11 Attachment A provides a description of all types of wetland referenced in this letter. 2,625 square feet of wetland in the Area A - West would be impacted by the ' improvement to Lake Drive East. The types and amount of wetland impacted is summarized in the following table. 1 AREA A - West ' Wetland Area Impacted Type 2 Impacted 975 square feet Type 6 Impacted 650 square feet ' Wetland Area Not Impacted 12,750 square feet Total Wetland Area 14,750 square feet ' 88% of the wetland, 12,750 square feet, in the Area A - West will not be impacted by this road construction. ' AREA B - EAST A total of 19,000 square feet of wetland exists in Area B - East. There are a ' variety of wetland types scattered throughout this area and the types change according to elevation and the location of low pockets or the ditch. Therefore, it is very difficult to determine the exact amount of wetland area according to ' type in Area B - East. There are five different wetland types that exist here; Type 2 - fresh meadow, Type 3 - shallow fresh marsh, Type 5 - open water, and a combination of Types 6 and 7 shrub and wooded swamps. In order to quantify the areas of wetland in Area B - East, it is possible to discuss the percentage ' of wetland types based on site observation. This information is summarized in the table below. ' AREA B - EAST Wetland Area Impacted Type 2 Impacted 10% 1,900 square feet ' Type 3 Impacted 7% 1,330 square feet Type 5 Impacted 3% 570 square feet Types 6 & 7 Impacted 80% 15,200 square feet ' Total Wetland Area 19,000 square feet ' All the wetland in Area B - East will be impacted by the improvement of the roadway and utilities. It should also be noted that with the construction of the storm water improvements that the ditch will be removed and the source of surface water for Area B - East will be eliminated. WOODLAND ' There is a third area of woodland between Area A - West and Area B - East. Based on the site visit and an analysis of observed vegetation types, it was determined that this is not a wetland. Upland varieties, primarily young oak trees, were observed and this provides evidence that it is not wetland. ' COMPENSATION ' 20,625 square feet, .47 acres, of wetland will be lost to the improvement of Lake Drive East and utilities. Compensation measures can be taken to replace this wetland, and based on the probable future of development on the site, ' compensation will need to occur elsewhere within the city. Considering the limited amount of area to be restored, it is suggested that only one type of 1 6 and 7 - shrub and wooded swamps, provide the most advantage to wildlife. Therefore, expanding one of these types of wetland would provide the most benefit. _Permit requirements of other agencies, such as the Corp of Engineers, should be reviewed prior to construction. ' It is planned that the bid date for this project will be April 6, 1990. Please advise us of any additional work that will be required to keep this project on schedule. If you have any questions, please call Pete Willenbring at 378-6399. Sincerely, ORR-SCHELEN-MAYERON & ASSOCIATES, INC. Laurie McRostie Peter R. Willenbring, P.E. j Landscape Architect Manager, Water Resources Department ' cc: Gary Warren Bud Osmundson Pete Willenbring Enclosures /lmt ' 1 I ATTACHMENT A 1 WETLAND DESCRIPTION ' Type 2 - Fresh Meadow. The soil usually is without standing water during most of the growing season but is waterlogged within at least a few inches of its surface. Vegetation includes grasses, sedges, rushes, and various broad-leaved ' plants. Meadows may fill shallow lake basins, sloughs, or farmland depressions, or these meadows may border shallow marshes on the lakeward side. Hay is often cut from such wetland areas. Type 3 - Shallow Fresh Marsh. The soil is usually waterlogged during the growing season; often it is covered with as much as 6 inches or more of water. ' Vegetation includes grasses, bulrush, spikerush, and various other marsh plants such as cattail , arrowhead, pickerelweed, and smartweed. These marshes may nearly fill shallow lake basins or sloughs, or they may border deep marshes on the landward side. They are also common as seep areas on irrigated lands. Type 5 - Open Water. Shallow ponds and reservoirs are included in this wetland ' type. Water is usually less than 10-feet deep and is fringed by a border of emergent vegetation such as cattail and bulrush. Submergent or floating vegetation (mainly at water depths of less than 6 feet) includes pondweed, wildcelery, coontail , watermilfoil and waterlily. Type 6 - Shrub Swamp. The soil is usually waterlogged during the growing season, I and is often covered with as much as 6 inches of water. Vegetation includes alder, willow, and dogwood. Shrub swamps usually occur along sluggish streams and on floodplains. Type 7 - Wooded Swamp. The soil is waterlogged to within a few inches of its ' surface during the growing season, and is often covered with as much as 1 foot of water. Wooded swamps occur mostly along sluggish streams, on floodplains, on flat uplands, and in very shallow lake basins. In Minnesota, tree species include tamarack, white cedar, black spruce, balsam fir, red maple, and black ' ash. 1 WETLAND ALTERATION PERMIT EVALUATION WORKSHEET To Be Completed By Applicant and Submitted with Application (Attach additional sheets if necessary) i 1. WETLAND DESCRIPTION: Size: See Attached Letter for Description ' Class: Type: Location: Lakeside Streamside Upland , Watershed District: Riley-Purgatory Creek Watershed Area of Open Water: Drainage Flows To: Rice Lake Marsh ' Vegetation Types: Soil Types: 2. DESCRIPTION OF PROPOSED ALTERATION: , Fill of .47 acres of wetland area. 3. PURPOSE OF PROPOSED ALTERATION: Improve Lake Drive East and local utilities. 4 . APPLICABLE WETLAND ORDINANCE SEC TION: Sec. 20.437 1 5. A. DISCUSS THE IMPACTS ON THE PROPOSED DEVELOPMENT IF NO , ALTERATION IS MADE: Roadway and utility improvements would not be possible. ' I I 5 . B. IDENTIFY AND DISCUSS OTHER ALTERNATIVES TO WETLAND ALTERATION: Lake Drive East is in existance. Improvement would not be possible without the proposed wetland alteration. ' C. IDENTIFY THE ADVANTAGES AND DISADVANTAGES OF THE PROPOSED ALTERATION: ' The area infrastructure will be improved, storm water drainage will be more controlled and directed. Wildlife habitat primarily for small mammals and birds will be eliminated. ' 6 . USING THE WETLAND ORDINANCE STANDARDS AS A GUIDE, DETERMINE WHETHER THERE ARE ANY INCONSISTENCIES BETWEEN THE ORDINANCE AND PROPOSED ALTERATION: 1 i —2 I WETLAND WETLAND AREA B - EAST AREA A - WEST 19,000 SQ.FT. 14,375 SQ.FT. I 19,000 SQ.FT. 1M: BLOCK 1 1625 SQ.FT. IMPACTED \LI LOT 1 ,1° '' IMCDONALDSI •A:: •ii,� � HOODED 11� • . CHANHAVEN PLAZA AREA ��-+�,����' BLOCK 1 LOT 2 /PO t b/. ` 0 �/ �' WOODL ND / co, . • . lie, a BLOCK 2 ~`" � O LOT 1 �, 4 LI +�1 r* 1soi LAKE DRIVE — EAST ■1■101 *** **+► ***********************At*** 0 •Y 0 0 I CHANHAVEN ESTATE ..._ .. .........,.....,..n,.,,,, — — — OM MI MIN WM MI NM — —.