R2017-30 Contract with Burdick Plumbing & Heating Pump Stations & Force Main CP 2016-02

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SANITARY SEWER PRIORITIES: Under the direction of the City Council, the Public Works Department has established four priorities to improve the City's sanitary sewer collection system as defined in the Sanitary Sewer Master Plan. 1. Critical Large Diameter Sewer Rehabilitation 2. Sanitary Sewer Overflows Due to Inflow and Infiltration 3. System Operation and Maintenance 4. Small Diameter Sewer Rehabilitation The Pump Station Improvement project addresses sanitary sewer priority 3, System Operation and Maintenance. BACKGROUND: Starr Crest Pump Station The Starr Crest Pump Station was built in 1965 to serve the Starr Crest Acres subdivision(See Exhibit A). The pump station is owned by the City of Decatur and maintained under a contract by the Sanitary District of Decatur. The station discharges through a 4"cast iron force main into a manhole at the north end of 31St Street and then flows through City of Decatur sewer mains to the Sanitary District of Decatur's Country Club Pump Station. The pump station and force main are 48 years old and the pumps are 28 years old. The station has exceeded the 25 year design life by 23 years. It is located in the backyard of a single family home which makes it difficult to access and service. The design and construction of the pump station met industry standards when it was first built in the 1960's; however, the pump station no longer meets design criteria acceptable by the Illinois Environmental Protection Agency. In addition, operating records indicate the station does not have sufficient capacity for wet weather flow and the Sanitary District has had to respond to frequent high water alarms at the pump station. The project includes complete replacement of the pump station and force main. The project is also providing a permanent access drive from Country Club Rd. Shore Oak Pump Station The Shore Oak Pump Station was built in 1981 to serve the Shore Oak Subdivision on the south side of the City(See Exhibit B). The pump station is owned by the City of Decatur and maintained under contract by the Sanitary District of Decatur. The station discharges to a City sewer located in South Shores Drive. The pump station, pumps, and force main are 35 years old and have exceeded the 25 year design life by 10 years. It is located in the Shore Oak Drive cul-de-sac. The design and construction of the pump station met industry standards when it was first built; however, the pump station no longer meets design criteria acceptable by the Illinois Environmental Protection Agency. The pumps cannot be maintained without sending a person into the confined area of the wet well, making it hazardous to maintain properly. The project includes the replacement of the pump station with reuse of the existing force main. — 2 —