Bolten & Menk, Inc and Northwest Associated Consultants, Inc.

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^ NACRAN ISEY Taw_ ^ The City uses the updated comprehensive sewer and water study's as a tool to address immediate sewer and water extension requests, as well as, long-term development plans within the City. Trunk Sanitary Sewer Extension,City of Ramsey,Minnesota Contact:Brian Olson,Director of Public Works Faced with petitions from property owners for the extension of trunk sanitary sewer,the City of Ramsey retained Bolton &Menk, in 2002 to prepare several alignment alternatives for evaluation and public ^ comment. Once the alignment evaluation was completed and the City selected a preferred alignment, Bolton&Menk was again retained, in 2004 for the detailed design of approximately 14,774 linear feet (2.8. miles)of sanitary sewer, which ranged in size between 8-inch forcemain and 30-inches gravity sewer ,.� and approximately 45,300 linear feet(8.6 miles)of watermain. The sewer alignment,which follows a wetland complex,presented the Bolton &Menk design team with many unique challenges including cleaning of approximately 3.5 miles of county ditch to facilitate 1 dewatering,wetland avoidance and mitigation, lift station construction, and the purchase of easements from approximately 50 property owners. In order to construct the sewer at the lowest cost and with the least amount of disruption to residential areas,wetland impacts were unavoidable. Therefore, Bolton&Menk worked closely with the City,the DNR,the Board of Water and Soil Resources(BWSR)and the local Watershed Management Organization to discuss ways of minimizing the impacts to wetlands and other environmentally sensitive areas. Where impacts were unavoidable,trench dams were constructed to prevent unintentional draining of water from the wetlands. In addition, soil borings were used to check for horizontal confining layers, which might create a perched water table,which could be penetrated by the trench and drained. At the completion of construction native wetland vegetation was re-established. As a result of these efforts, long- "—, term impacts to the wetlands are not expected. ^ ,.� Bids for construction were accepted in the winter of 2006 and construction activities were completed in the fall of 2006. Mississippi Trunk Sanitary Sewer Extension EAW, City of Ramsey,Minnesota Contact:Brian Olson,Director of Public Works , Bolton& Menk, Inc. assisted the City of Ramsey, MN in the preparation of an Environmental ^ L • Assessment Worksheet(EAW)for a proposed sanitary sewer extension in the City of Ramsey. ^ The project is an extension of the trunk sanitary , • " '. - sewer system to the City of Ramsey's sanitary sewer ^ > ' ' sub-district M4, west of the Town Center. The project consists of the construction of 6,330 feet of 18-inch pipe with average design flows of 0.73 million gallons per day(MGD)and 1,460 feet of Proposal for Professional Planning and Engineering Services Section 1 - 10 ^ 2008 Comprehensive Plan Update Submitted by: City of Ramsey, Minnesota NAC and Bolton&Menk ^