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Additionally, due to the significant rainfall that has occurred throughout the month of May, water levels are elevated in all locations that some improvements are planned for. Under Division A of the Stormwater Improvement Project, a couple of modifications are being proposed. A culvert was initially proposed to be installed under 175th Avenue NW (Old County Road 63) to alleviate flooding concerns on the roadway that occur from time to time; there is currently no culvert in place that allows water to flow south to north. After reviewing the downstream area following the recent extreme rainfalls it was determined that work needs to be performed on the downstream brooks and ditches to adequately allow for this water to eventually reach Trott Brook. Therefore, this portion of the overall project is now proposed to be eliminated (deduct) from Division A, and staff will begin meeting with property owners in the area to review this drainage concern and seek approval to perform a ditch cleaning project. Once the downstream drainage has been resolved then we can revisit this culvert installation in the future. Attached to this case is a location map showing this drainage area. The elevated water levels in County Ditch 66 are causing the culverts to flow full through the area near Wolfram Street. Division A of the contract contemplated an 18" bypass culvert to be installed while the existing failing 48" culvert is being replaced. Due to the high water levels and extreme flows a larger bypass system is needed to maintain the integrity of the channel and roadway during installation of the new culvert. Therefore a change order (addition) is being requesting for this additional work. Attached to this case is the requested change order for the above described work, which results in a net deduct change order for Division A of the 2012 Storm Sewer Improvement Project (IP #12-24) in the amount of $119. Funding Source: The funding source for these improvements is proposed to be the Stormwater Utility Fund. Staff has received quotes from two existing contractors, so as to include this work as a change order under a contract for City Improvement Project 12-24; 2012 Storm Sewer Improvements. The engineers estimate for the two projects is $21,000, and the results of the quotes are as follows: Dryden Excavating (Division A contractor) Julian Johnson (Division B contractor) $16,610.00 $16,460.00 Staff Recommendation: Staff recommends approving a change order for City Improvement Project 12-24 - Division B, with Julian M. Johnson Construction in the amount of $16,460.00 Committee Action: Motion to approve a change order for City Improvement Project 12-24 - Division B, with Julian M. Johnson Construction in the amount of $16,460.00 Hakanson Anderson Report 148th Project Location Map Ramsey Commons 2nd Addition Plat 148th Proposed Corrections 149th Project Location Map Ramsey Meadows 2nd Additon Plat 149th Resident Petition 149th Petition Map 175th Avenue Drainage Division A Change Order Request Attachments