Agenda - Council - 05/22/2012 - Laserfiche WebLink

Home

CC Regular Session Meeting Date: 05/22/2012 By: Tim Himmer, Engineering/Public Works 7. 3. Information Title: Consider Award of Contracts for the 2012 Storm Sewer Improvement Projects; City Improvement Project # 12-24 Background: Last summer the City experienced several significant rainfall events that led to many localized flooding concerns, and resident complaints. The large volumes of precipitation that occurred over a short period of time appears to have elevated the groundwater within areas of the City, and prohibited the generous rate of infiltration that typically takes place in the Anoka sandplain. Throughout the summer and fall staff worked hard at registering and responding to the calls, and evaluating the situations on an individual basis to determine whether quick fixes could be implemented (culvert obstructions, re -ditching, etc.) to alleviate the immediate concerns. This item was discussed by the Public Works Committee on several occasions; beginning in August of last year, and at that time staff summarized the areas of concern that were being investigated based upon citizen complaints received. Concerns identified were classified into 3 categories: 1. Those that required no further action. They were evaluated and corrected, or did not need correcting because the water was fully contained within a dedicated drainage & utility easement (functioning as designed). 2. Those that required additional investigation and evaluation before deciding on a long term solution, and implementing corrective actions. 3. Those that had an identified recommendation for immediate action. From the fall of 2011 and into the spring of 2012 the Public Works Committee has been discussing all of these areas of concern on an individual basis. In September 2011, the City Council authorized staff to prepare plans and specifications for the items identified in category 3. Once this direction was given, and the plans prepared, it was too late in the season to secure bids and complete the improvements before the end of the year. It was then decided to delay construction until 2012, where some of the improvements could be completed by inclusion in a larger stormwater improvement plan set. Based upon subsequent direction staff has been able to incorporate additional improvements into the project set for items identified in category 2. Observations: In conjunction with the 2012 Street Maintenance Program (SMP), various minor storm sewer repairs are necessary. Staff has incorporated those items into a separate plan, as they must be completed before the sealcoat application can be applied. One set of plans (Division A) will primarily address the larger projects to alleviate flooding concerns; those improvements are estimated at an amount that requires a 3 week bidding process. The other set of plans (Division B) will primarily address the minor storm sewer repairs; those improvements that must be completed quickly and fall under the $100,000 threshold for bidding requirements. This project was sent out for quotes to local contractors in an effort to expedite the improvement in advance of the SMP activities. On May 11, 2012 it was brought to our attention that the culvert under Wolfram Street NW, which serves to provide flow through for County ditch #66, was collapsing and in need of repair. Staff quickly evaluated the situation and prepared a plan sheet to distribute as an addendum to the Division A project set. Bids for both projects are due. and were opened, at 10:00 am Friday, May 18th. They have been tabulated and are attached to this Case. Between the opening and Council meeting staff will have the ability to check the contractor's references, and be in a position to make a recommendation for award at the Council meeting.