2004-137 Council Resolution - Laserfiche WebLink

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• • Pheasant Hills Preserve 12th Addition City of Lino Lakes, Minnesota Page 2 September 17, 2004 additional 1200 feet in length for the proposed improvements, this results in a dead end street roughly 0.5 miles long which significantly exceeds the City's minimum cul -de -sac length of 500 feet. This may be a concern for emergency vehicle and fire access and maintenance, especially when considering that the proposed bridge and new street will not meet City standards for width. Public Safety (Police and Fire) are therefore reviewing the plan as well. In addition, the development will be served from a long dead end (6 -inch diameter) watermain. As a result, adequacy for fire protection (water circulation and pressure) is also being verified. A main environmental concern is the noise and vibration from the pile driving (bridge construction) activity. In addition to work activity allowed only during established hours by the City, temporary noise walls around pumps will be required by the City. As stated in the August 17, 2004 letter to Ed Vaughan from the City of Lino Lakes, the City will require a preconstruction survey and monitoring program based upon specifications used by MnDot. The letter addresses specifics in more detail. 3. The proposed bridge design must address the visual /aesthetic concerns expressed by the City, and shall be subject to the City's approval. The proposed structural bridge plan is also being reviewed further and will be subject to further comments. The bridge must all meet also meet any further applicable requirements of the Minnesota Department of Transportation and Anoka County. Any temporary fill or impacts to the wetland during the course of construction must also be addressed. 4. The Grading. Plan indicates that Soil Borings were conducted by STS on March 6, 2002, and a copy of the boring logs has been attained. However, no report or set of recommendations from a geotechnical engineer has been provided. The boring logs provided show a wide variation of silty sands, silty and sandy clays, and peat throughout the project area. It is therefore expected that at least some soil correction measures will be needed during the course of roadway and utility construction, and construction of the housing units themselves. A report and recommendations from a geotechnical engineer must therefore be provided to further verify the design of the supporting infrastructure, including roadway and utility construction, building foundations, and bridge construction. Groundwater levels and potential impacts on construction must also be known. Grading 1. Because of the environmental sensitivity of the project site, custom grading of each lot must be provided to minimize impacts to the existing topography. The Grading Plan notes should also specify that all grading and disturbance work shall be confined to within the construction limits as established on the plan and approved by the City in the field prior to activity. Erosion control and tree protection measures must also be established prior to any work activity, including the delineation of the preservation area on the north side of the island. The preservation area must be clearly shown on the grading plan, shall be marked in the field by the Developer, and shall be field verified and approved by the City prior to commencing any work activity. 2. Construction traffic and operations shall also be staged with the bridge construction to allow for access to the site and minimize impacts to the natural area. Because the site essentially sits at the end of a very long cul -de -sac, the neighborhood will experience regular intervals of construction traffic