TRANSMITTAL LETTER FOR BOARD MEETING OF DECEMBER 5, 2024
COMMITTEE ON MAINTENANCE AND OPERATIONS
Mr. Brian A. Perkovich, Executive Director
Title
Final report for Emergency Contract 24-600-01, Upper Des Plaines 11-H Sewer Repairs and Restoration to Airy’s Inc., Account 901-66000-667220, Purchase Order 3129962
Body
Dear Sir:
On June 6, 2024, a sinkhole was discovered in the roadway on Plum Grove Road between East State Parkway and Penny Lane in Schaumburg. An investigation determined that the District’s Upper Des Plaines Intercepting Sewer 11-H at this location had a hole in the top of the sewer and needed to be repaired.
On June 20, 2024, the Board of Commissioners formally declared an emergency affecting public health and safety to repair the Upper Des Plaines Intercepting Sewer 11-H. Emergency Contract 24-600-01, Upper Des Plaines 11-H Sewer Repairs and Restoration was issued to Airy’s Inc., in an amount not to exceed $250,000.00. As the construction proceeded, the deterioration in the sewer was found to be more severe than anticipated during the initial assessment. A new manhole structure had to be constructed to bypass flow around the area that was repaired and the road excavated over the sinkhole to replace sections of the pipe. Additionally, approximately 465 feet of the existing sewer needed to be lined, and 23 feet of the adjacent manhole was lined to prevent further deterioration. During the entire period of construction on the sewer, it was necessary to provide 24-hour manned bypass pumping to prevent sewage backup into resident’s homes and local businesses. These factors led to the cost of the repairs being higher than originally anticipated. The restoration work was completed on November 8, 2024, and the sewer is now fully functional. The final cost of all repair work was $1,663,364.10.
Requested, John P. Murray, Director of Maintenance and Operations, EJS:JS:SH
Disposition of this agenda item will be documented in the official Regular Board Meeting Minutes of the Board of Commissioners for December 5, 2024