R2015-76 ACCEPTING THE BID PETERSBURG PLUMBING

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In 2009 the City retained the services of Shive-Hattery of Bloomington to review and respond to continuing drainage concerns in the neighborhood protected by the levee. Ever since the construction of the levee in the early 1980's, yard flooding has been an ongoing concern. Shive- Hattery published their final report in 2010 detailing several proposals to improve drainage in the neighborhood. One significant and easily implemented improvement was the recommended installation of in-line check valves in the storm drain system to supplement the manual check valves. Every time the Sangamon River reaches flood stage, City crews are dispatched to close 4 storm drain lines that extend under the levee. These calls go out during times of flooding in the City and pull crews from other flood protection duties and require them to travel on foot to difficult to reach check valves that need to be closed by hand. The proposed new in-line check valves will seal themselves automatically by water pressure created by the Sangamon River in flood stage but will allow storm drainage to be discharged at times of reduced flow in the river. It has always been a problem getting the valves reopened at the optimal time and with the new system water will discharge automatically as the river recedes (see the attached valve information). The proposed check valve system will require minor maintenance to assure that the opening is not blocked. The current manual check valves will remain in place serving as a backup system. Letting Results The project plans and specifications were prepared by the Public Works Engineering Division. The project was advertised on May 6, 2015, and bids were opened on May 21, 2015. The results of the letting are as follows (bid tabulation attached): Bidder Bid Price Compared to Engineer's Est. Over -Under Petersburg Plumbing& Excavating, LLC $55,250.00 (-12.30%) G A Rich& Sons, Inc. $67,394.00 6.97% Burdick Plumbing & Heating Company, Inc. $74,935.00 18.94% Entler Excavating Company, Inc. $99,500.00 57.94% Engineer's Estimate $63,000.00 ------ Four contractors took out bid packages and submitted a bid proposal for the Sunset Levee In-Line Check Valve Installation project. Petersburg Plumbing & Excavating, LLC, provided the lowest responsive and responsible bid at 12.3%below the engineer's estimate. This is the first Public Works Project Petersburg Plumbing and Excavating, LLC has performed for the City. A review of references has determined them to provide excellent work. The contractor successfully installed similar check valves for the City of Springfield. City staff recommends that Petersburg Plumbing and Excavating, LLC, be approved to complete this project. Page 12