Memorandum

City of Lawrence

Utilities Department

TO:	David L. Corliss – City Manager Cynthia Boecker - Assistant City Manager Diane Stoddard - Assistant City Manager
FROM:	John Shutak – Utilities Engineer
CC:	Dave Wagner – Director of Utilities Philip Ciesielski – Asst. Director of Utilities Mike Lawless – Asst. Director of Utilities Beth Frailey Krishtalka – Management Analyst Mark Hegeman – Water Systems Manager Dave King – Utilities Maintenance Manager
Date:	August 26, 2009
RE:	Regular Agenda Item – Advertise RFP R09013 for Engineering Design Services for General Wastewater Pumping Station Improvements, Project UT0919CS

Please include the following item on the City Commission Agenda for consideration at the September 01, 2009 meeting:

Authorize Staff to advertise a Request for Proposals for Engineering Design Services for General Wastewater Pumping Station Improvements.

Project Description

The City budgets a yearly fund for the ongoing maintenance, repair, and, when necessary, replacement of existing wastewater pumping stations within the collection system.

Project Status/Details

The City of Lawrence operates a number of small (80 to 300 gpm) vac-prime wastewater lift stations to convey sewage to its wastewater treatment plant. These lift stations were installed by the development community to provide service to localized areas of development. The lift stations are typically located in utility easements adjacent to or surrounded by residential property. The existing stations are 15 to 40 years old, many have exceeded their useful lives, are unsafe to maintain as several of the lift stations are classified as confined space entry, many are no longer supported by the original manufacturer and require replacement to bring them up to current KDHE minimum design standards.

The general intent of the project is to replace a number of the existing vac-prime lift stations with rail-mounted submersible pumps, valve vault, overflow prevention, backup power connection and flow metering in order to meet current KDHE minimum design standards. Some modifications to the existing gravity lines upstream of each station may be required. The City will provide wet well level instrumentation, programmable logic controllers and programming.

To achieve this intent, Staff have prepared a Request for Proposals for Preliminary Engineering Services. The preliminary services will consist of evaluating the existing lift stations for capacity and property requirements in order to determine replacement priority, construction budgets, and construction phasing.

With the preliminary evaluation completed, Staff will then request Design and Construction Phase Engineering Services necessary to complete the initial construction phase as identified in the preliminary evaluation.

The vac-prime lift stations that will be evaluated as part of the General Wastewater Pumping Station Improvements are identified on the attached maps.

Project Funding: 

These projects will be funded out of the 2009 Department of Utilities bonded construction fund per resolution No. 6835. Construction is anticipated to begin in 2010.

In addition, funds in the amount of $42,600 were placed in escrow by the developer of Sherylville Estates in 2005 to be applied toward the expansion of the sanitary sewer capacity provided to this area by pump station PS28. The expansion of sanitary sewer capacity to this area was included in the 2003 wastewater master plan via the expansion of PS28 in 2009. This project is included in the scope of this RFP. The escrow agreement requires that the project be initiated and funds expended in 2009 or the escrowed amount be returned.

Action Request:  Authorize Staff to advertise a Request for Proposals for Engineering Design Services related to the General Wastewater Pumping Station Improvements.

Thank you for your assistance. Please advise if you have any questions.