4B, Elmer L. Andersen Trail Connections - Payment #3

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%.� EN HILLS. MEMURANDUM DATE: June 28, 2010 TU: Honorable Mayor and City Council Members Patrick Klaers, City Administrator FROM: Kristine Giga, Civil Engineer SUBJECT: Elmer L. Andersen Memorial Connections Trail- Payment #3 Back�round The City of Arden Hills awarded American Liberty Construction, Inc., of Rockford, Minnesota, the Elmer L. Andersen Memorial Connections Trail Proj ect on February 22, 2010, for a total contract amount of $458,800. Discussion This pay request includes work completed through May 31, 2010. The payment is for $117,612.61 and includes grading, aggregate base, retaining wall construction, hydrant relocation, storm sewer work, and erosion control. This pay request also includes Supplemental Agreements # 1 and #2. Supplemental Agreement # 1 is for the pedestrian crosswalk beacons proposed along County Road E-2 at the connection to Venus Avenue. The beacons are Ramsey County's contribution to the proj ect. In discussions with Ramsey County, they indicated it would be more efficient to include the installation as a part of the proj ect, as opposed to the county coming in at a later date to install them. The amount of Supplemental Agreement # 1, $12, 566.40, is less than the $15,000 the county estimated for this work; however, Ramsey County will still contribute the full amount towards the proj ect. The balance will be applied to . englneering expenses. Supplemental Agreement #2 is for the replacement of corrugated metal storm sewer pipe located between the wetlands that are separated by the pathway leading to the lift station below Perry Park. During construction, it was discovered that this pipe had completely deteriorated causing a sink hole in the access road to the sanitary sewer lift station. The cost to replace this pipe was $3,250.43. City Council Meeting \�Metro-inet\ardenhills�PR&PW\Engineering\Council_Actions�2010\6-28- l OMemo_ELATrail_Payment#3.doc Page 1 of 2