Title
Fairway Estates (Maycliff South - Stage 2) Storm Water and Water Main Improvements GMP - Proposal
History
In 2016, the Maycliff Subdivision stage 1 storm water and water main improvement GMP project and road improvement projects were completed. That project included storm sewer pipe additions and larger conveyance pipes to the downstream pond in Schussler Park (Fairway Estates). Stage 2 of the Maycliff storm water improvement will further minimize the risk of flooding in the Maycliff and downstream subdivisions to Tinley Creek. The Stage 2 improvements are also intended to improve storm water issues currently experienced in the Fairway Estates Subdivision along Poplar from Golfview Drive to 147th Street.
Christopher B. Burke Engineering, Ltd. (CBBEL) was approved to initiate phase I & II engineering for the Fairway Estates (Maycliff south - stage 2) Storm Water Improvement Project in November, 2014. That work included hydrologic and hydraulic analysis, topographic survey, alternative improvement analysis, utility coordination, permitting and final engineering. Engineering for water main replacement was not included in the original scope of work.
On March 16, 2017 the Village hosted a neighborhood meeting to verify the understanding of the issues and discuss potential remedies. Two options were focused upon. The first option being only the installation of a new 60 inch outlet pipe from Schussler Pond. This is the option being proposed to move forward with at this time. The second option included expansion of Schussler Pond and reconfiguration of the park. While the pond and park improvements are not being moved forward at this time, they can be executed when funds become available. The full benefits of the improvement project will not be realized until the pond area is expanded.
The Fairway Estates subdivision was developed in phases starting in the late 1950’s and through the early 1970’s. The water mains were installed using cast iron pipes (current standard is ductile iron pipe with a polyvinyl wrap). Over the 50+ years of service, the water mains have corroded on the exterior of the pipe and have caused numerous breaks. Public Works is systematically replacing and/or lining these older cast iron pipes. These area homes are prime candidates for remodeling, building additions and upgrades which will require larger water service sizes. The area is best suited for water main replacement instead of lining to increase pipe diameter to improve flow characteristics and upgrade water services.
Similar to the Maycliff subdivision stage 1 project, Public Works staff reviewed the area between 88th Avenue to Poplar and Golfview Drive to Biloba in the Silver Lake West Subdivision for inclusion into a combined improvement project including the storm water and water main.
Typically, the Village hires a firm to design this type of project, which would then go out to bid for a contractor to construct. However, the storm water projects previously completed as a result of the flood study were handled through what is known as a “design/build” contract. In those projects, the Village retained Burke L.L.C., the design/build entity within the CBBEL group, to design the solution and manage the construction. Those projects were all completed earlier than anticipated and under the expected budget.
To expedite the project in the eastern portion of the Fairway Estates area, the design/build delivery method is recommended. The traditional design/bid/build option would require significant water main engineering delaying construction and adding to the cost. If selected, the design/build delivery method would include a Guaranteed Maximum Price (GMP), the same method used for completion of the previous flood study projects completed by Burke, LLC.
At this time, roadway improvements are not a part of the proposed GMP. Roadway improvements will be programmed for 2018 either as an amendment to this GMP or as a part of the Neighborhood Road Improvement Program. In addition, Schussler Pond and Park improvements are not part of this proposed GMP. Additional coordination and budgeting in conjunction with the Parks Department will be required for a future year implementation.
Village staff requested that Burke, LLC of Rosemont, Illinois provide a proposal to consider the design/build option. The proposal is attached and reflects a cost of $4,774,600 for the delivery of the project and will include a shared savings with the Village if the project is completed under budget. If the project comes in over budget, Burke, LLC would be obligated to cover the additional cost, with one exception: if the soils are determined to be contaminated, a change order would be negotiated. Included as part of this proposal is an alternate for adding backyard drainage improvements at a cost of $310,300.00.
On September 5, 2017, this item was reviewed by the Public Works Committee and recommended for approval and referred to the Village Board of Trustees for consideration.
Financial Impact
There are sufficient funds available in the Water Fund Capital Budget accounts 031-6002-470500 and 031-6007-470500 for this project.
Recommended Action/Motion
I move to approve waiving the bid process;
And
Approve accepting the proposal from Burke, L.L.C. of Rosemont, Illinois for a Guaranteed Maximum Price (GMP) of $4,774,600.00 for the Fairway Estates (Maycliff South - Stage 2) Drainage and Water Main Improvement Project.