As a result of recent sanitary sewer modeling efforts on behalf of the North Texas Municipal Water District (NTMWD) along Cottonwood Creek along with additional input from the City of Allen, it became apparent that capacity may not exist within the trunk system owned by NTMWD. The City contracted with Birkhoff, Hendricks, & Carter, L.L.P. to assist in the evaluation of a regional engineering analysis that includes the approximate 270-acre vacant property owned by the Howard Hughes Corporation and included the Town of Fairview.  As a result of the study, the need for a regional lift station to include flows from both the City of Allen and the Town of Fairview was identified and recommended.   Conversations with the Town of Fairview and NTMWD have led to a proposed three-way partnership that would divide the costs of the proposed project as follows:

1. City of Allen would pay for 100% design and construction of a gravity line extending from the City of Allen into Fairview to connect to the lift station
2. Town of Fairview and City of Allen would split the costs (25% and 75%, respectively) for the design and construction of the new regional lift station.  NTMWD would own and operate the facility once constructed.
3. The NTMWD would pay for 100% of the design and construction of the force main that would extend from the new regional lift station north into McKinney to connect to another NTMWD facility for further transport to the treatment plant.

This design contract is to design the Allen sewer line (item #1, above).  Specifically, the design services will include an analysis to find the best path through Fairview, prepare easement documents for land acquisition, and prepare final construction drawings for bidding and construction.  Estimated project cost for Item #1 (including land acquisition, design, and construction is $1,500,000).

The initial engineering design contract amount of $153,300 will utilize wastewater impact fee revenues that have been collected to-date and programmed in the existing Capital Improvement Plan.  

Staff recommends the City Council authorize the City Manager to execute a Professional Service Agreement with Birkhoff, Hendricks, & Carter, L.L.P., in the amount of $153,300 for the Sloan Creek Trunk Sewer Project.

I make a motion to authorize the City Manager to execute a Professional Service Agreement with Birkhoff, Hendricks, & Carter, L.L.P., in the amount of $153,300 for the Sloan Creek Trunk Sewer Project.