Memorandum
City of Lawrence
Utilities
TO:
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David Corliss – City Manager Cynthia Boecker, Assistant City Manager Diane Stoddard, Assistant City Manager |
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FROM: |
Mike Lawless – Project Engineer |
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CC: |
Dave Wagner – Director of Utilities Philip Ciesielski – Asst. Director of Utilities Beth Frailey Krishtalka – Management Analyst |
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Date: |
January 2, 2008 |
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RE: |
January 8, 2008 Agenda Item – West Baldwin Creek Interceptor Sewer Utilities Department Project #CS07-04 Engineering Services Agreement |
Please include the following item on the City Commission agenda for consideration at the January 8, 2008 meeting:
Authorize the City Manager to enter into an Engineering Services Agreement with Professional Engineering Consultants in the amount of $285,680.00 for completion of the design and construction phase services for the West Baldwin Creek Interceptor. A future agenda item will include any appropriate recommendations for proceeding with necessary condemnation actions.
The project began with a preliminary design/build agreement for engineering design to be completed to a level that would allow development of a guaranteed maximum price (GMP) for the construction of the project. A GMP was developed and a contract prepared. Staff does not recommend proceeding with the GMP because some of the costs are estimated under this delivery system and recommends proceeding with the project as a design-bid-build project.
Project Engineering Cost
The initial contract amount for the development of the GMP was $315,000. The engineering cost included in that amount was $187,164. The total engineering cost in the design/build format was to be $438,000. By moving to a design-bid-build project format, the total engineering cost is projected to be $472,844. The increase of $34,844 is due to development of full construction bid documents and additional construction phase services related to a design-bid-build format.
Project Description
The project will complete the design of approximately 15,000 feet of gravity sewers ranging in size from 10” to 30” that were identified in the 2003 Wastewater Master Plan as E-BC-1-02, E-BC-2-01 and E-BC-2-02. The project will connect to and extend the gravity sewers constructed with the Pump Station 48 project. The general area involving the project is shown on the attached map.
The constructed firm capacity of Pump Station 48 is 6.6 MGD. Currently, only the Free State Interceptor sewer with a design flow of 2.6 MGD connects to Pump Station 48. Upon completion of this project and the direction of the 0.7 MGD from the BC1 Benefit District to PS48; 3.3 MGD of the current PS48 capacity would be available for additional development.
Project Status/ Details
PEC was the engineer that provided design services under the preliminary design/build agreement. Staff has negotiated an agreement with PEC for the completion of the design as well as bidding and construction phase services. This will allow the project to be completed in a typical design-bid-build manner.
The following project schedule is anticipated.
Engineering Agreement: January, 2008
Complete Design: March, 2008
Construction Contract: May, 2008
Complete Construction: February, 2009
Property Interests to be Acquired. The project will be constructed in a 100’ temporary construction easement with a 40’ permanent utility easement and a permanent greenspace and pedestrian and recreational path easement that will remain upon completion of the project. The permanent easement will allow for future construction of city data and communication lines and walking trails. Offer letters have been sent and active negotiations are underway to acquire easements along the project route. It is anticipated that most of the property interests will be able to be acquired through negotiations. However, in order to insure that property is under control for construction of the project, it is necessary to initiate condemnation proceedings now. Property owners are aware that this will occur and that it should not result in any expense to them unless a negotiated easement purchase cannot be agreed upon in the next month or so.
Project Funding
Initial funding for the project will be provided from the non-bonded construction fund. The cost of the project will ultimately be shared by developments benefiting from this infrastructure improvement through the payment of special connection charges including Ordinances 8118 and 8192 and would be in addition to any system development charges, special assessments, maintenance fees or other fees or charges.
Action Request
Authorize the City Manager to enter into an Engineering Services Agreement with Professional Engineering Consultants in the amount of $285,680.00 for completion of the design and construction phase services for the West Baldwin Creek Interceptor Sewer. A future agenda item will include any appropriate recommendations for proceeding with necessary condemnation actions.