Title
Maycliff Subdivision Storm Water and Water Main GMP - Proposal
History
Originally constructed as an unincorporated subdivision in the 1960’s the Maycliff Subdivision’s infrastructure, including storm sewers, water main and roads are in need of significant upgrade. Main line sanitary sewer rehabilitation was previously completed. Storm sewer and water main improvements are proposed as part of this current project. Road rehabilitation will be coordinated as part of the proposed 2016 Neighborhood Road Improvement Program, following completion of the other improvements.
Certain areas within the Maycliff Subdivision have periodically experienced street, yard and home flooding as determined by the Flood Risk Reduction Study conducted by Christopher B. Burke Engineering Ltd. of Rosemont, Illinois (CBBEL). As part of the flood mitigation effort, CBBEL has provided phase I and phase II engineering services to reduce the likelihood of flood along 87th Avenue between 144th Street and 145th Street (area 1 on attached Improvement Area Phasing Exhibit). Through the process, including communication from residents and open house forums, additional areas of concern have been identified.
Numerous residents have provided input regarding backyard drainage issues based on the topography, which is very flat; blocked overland flow paths and a lack of backyard storm structures create standing water in rear yards, which is not uncommon in Orland Park. On April 20, 2015 the Village Board approved the expanded scope of the improvement project to include additional storm water conveyance from the streets and backyards (area 2 on the attached Improvement Area Phasing Exhibit). In addition, residents in the area of Maycliff Drive and 143rd Place & 87th Avenue, north of the original study area, identified significant flooding concerns which were previously unknown (area 3 on the attached Improvement Area Phasing Exhibit).
The Maycliff Subdivision is also prone to water main breaks, a common occurrence on the older cast iron water mains. As part of their original scope of work, CBBEL was asked to provide engineering services for the replacement of the water main and appurtenances. Three different methodologies of rehabilitation were explored; open cut, directional bore and slip lining. After evaluation, the least expensive and least invasive option of slip lining was selected.
To address the expanded storm water improvement scope and provide a timely resolution to minimize the potential for future flooding, a Guaranteed Maximum Price (GMP) proposal was requested to implement construction. The water main rehabilitation (slip lining) is included in the proposal to consolidate the impact to the residents and ensure substantial project completion in 2015. On April 21st, 2015 a GMP proposal was received from Burke, LLC of Rosemont, Illinois in the amount of $5,773,750. Due to the scope of work, the proposal is broken into three sections. The storm water portion of the proposed work totals $2,895,250. The water main portion totals $2,778,500. An additional $100,000 is requested by staff as Owners Allowance (contingency) to accommodate unforeseen additions and changes for this large project.
On May 4, 2015, this item was reviewed and approved by the Public Works Committee and referred to the Board for approval.
Financial Impact
There are sufficient funds in the water fund storm water capital account, 031-6007-470500, for the storm water improvement portion of the project. There are sufficient funds in the water fund water capital account, 031-6002-470500, for the water main improvement portion of the project.
Recommended Action/Motion
I move to approve waiving the bid process;
And
Approve accepting the Maycliff Subdivision Storm Water and Water Main GMP proposal from Burke, LLC of Rosemont, Illinois in the amount of $5,773,750.