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Memorandum <br />zl['[RIN6 - ASSOCIATES <br />TAUt Ma <br />TO: Little Canada Mayor and City Council Members <br />FROM: Lee Elfering, City Engineer <br />DATE: December 12, 2007 <br />RE: 2007 Miscellaneous Storm Sewer Improvements <br />Change Order #1 <br />Background <br />A major portion of the improvements project was the replacement of an old Corrugated <br />Metal Pipe (CMP) from the Viking Drive cul -de -sac to the outlet to the east of the cul -de- <br />sac. The original plan outlined the removal of the failed CMP pipe and replacement with <br />a HDPE pipe following the same alignment and grade. When the permit was submitted <br />to the Minnesota Department of Transportation for the work needed within their right -of- <br />way they indicated that no approval would be granted without modifying the pipe <br />alignment to minimize the water exit velocities. To accommodate this requirement a <br />drop structure was added and a permit was received. The addition of the structure and <br />modification of the pipe grade then required a modification of the horizontal alignment of <br />the pipe to eliminate conflicts within the Magellan Easement. While approvals were <br />being obtained from Mn /DOT the sink holes created by the failed pipe worsened <br />resulting in the need to reset the hydrant at the end of the cul -de -sac. <br />The remaining items outlined in the attached Change Order were minor extra work items <br />that were requested of the Contractor due to his close proximity to the area and his <br />ability to complete the work in a timely manner. <br />Summary and Recommendations <br />The attached Change Order outlines the additional work required or requested of the <br />Contractor that was outside the original contract requirements and bid costs. We have <br />reviewed the extra charges totaling $6,477.00 and would recommend the City Council <br />approve Change Order #1 and authorize its payment. <br />If you have any questions or would like to discuss this issue please feel free to call me at <br />(763) 780 -0450 ext. 13. <br />Z: \PROJ \120079E - 2007 Miscellaneous Storm Sewer Imps \0071 \Memo - 121207 -CC (CO 1).doc <br />10062 Flanders Court NE - Blaine, MN 55449 - (763) 780 -0450 fax (763) 780 -0452 <br />