The Village owns and maintains approximately 240 miles of storm sewer infrastructure. Of that, approximately 3%, or 35,000 feet is Corrugated Metal Pipe (CMP). The majority of the CMP is over 50 years old and the pipes have reached the end of their design life. As part of the Capital Improvement Program (CIP), staff has identified priority locations with the goal of evaluating the pipe conditions and proposing rehabilitation or replacement, as deemed necessary.

In FY 2019/20, staff retained Clark Dietz, Inc. of Oakbrook, Illinois to perform the condition assessment and design at priority locations: Cedarcrest Drive, Edwin Aldrin Elementary School, Jaycee Park, Thorney Lea Terrace, and Standish Lane. A change order was later processed to include Boxwood Drive.

Three construction plan sets were developed upon the completion of design, based on the scope of work proposed: Spray-In-Place-Pipe (SIPP), Cured-In-Place-Pipe (CIPP), and Outfall Improvements. The SIPP plans were originally put out to bid in August 2020. The bids for this scope came in over budget; therefore the project was not awarded.

The plans were value-engineered to remove ancillary scope, such as concrete and landscape restoration. In previous bids, unit pricing for those items came in high, likely due to small quantities. Those items will be completed now as part of the annual concrete program and with the contractual landscape services.

The final component of this project, the outfall improvements, will be value-engineered and placed out to bid at a later date. The outfall improvements will require more time-consuming permitting and include wetland determinations which is why they are being deferred at this time.  The SIPP and CIPP projects were prioritized as this work is most crucial to reestablishing the functionality of the storm sewers.

The SIPP and CIPP plans were bid and opened on August 27, 2021.  The SIPP scope includes rehabilitating three corrugated metal storm sewer pipe segments along the easterly and southerly property limits of Aldrin Elementary School (617 Boxwood Drive) and along Boxwood Drive, from Aldrin Elementary School to the intersection of Boxwood Drive and Cedarcrest Drive.  The work consists of rehabilitating 1,138 feet of 52” diameter deteriorated corrugated metal pipe using SIPP techniques, storm structure rehabilitation using build-back or SIPP techniques, storm sewer spot repair, landscape restoration, pavement restoration, traffic control and protection, and all other work items necessary to complete the project.

The SIPP project had two bidders with the lowest being Engineering & Construction Innovation, Inc of Oakdale, Minnesota. The Village’s consultant has checked references and held discussions with the firm's president on multiple occasions as he is a subject matter expert and recommends award.