With repair efforts progressing well, Commissioner Miller and Executive Hackel, as they’ve done several times before, paid a personal visit to the site of the damaged sewer interceptor in Fraser where they were updated on the progress to date.
They also participated in a tour that included being lowered (and returned to the surface) the 65-feet to the bottom of the recovery shaft for a first-hand look at the successful repair efforts to date. The media was also invited to the site, and following their visit to the floor of the shaft, Commissioner Miller and Executive Hackel, along with a number of engineers, met with TV, radio and newspaper reporters to share their experiences and provide updates on the progress being made on repairing and restoring flow to the damaged 11-foot diameter interceptor.
Prior to visiting the recovery shaft Commissioner Miller and Executive Hackel received a progress update from AEW President & CEO Roy Rose, County Wastewater Engineer Evans Bantios, and FKE Engineering President Fritz Klinger at AEW’s 15 Mile Fraser Field Office.
AEW’s Lead Inspector Keith Lumma adjusts County Executive Mark Hackel’s safety harness as he chats with Public Works Commissioner Candice Miller and Public Information Officer John Cwikla prior to descending into the recovery shaft for a first-hand tour of the repair efforts.
Commissioner Miller and Executive Hackel being secured in a “man cage” prior to their descent into the repair site.
The “man cage” is lifted to the recovery shaft where it was lowered approximately 65-feet to the floor of the shaft.
20-ft. lengths of 9’ 2” diameter HOBAS pipe, weighing 15,000 pounds each, are being staged prior to lowering them into the recovery shaft where they are currently being used to line the 3,700 feet of the 11-ft. diameter interceptor east of the recovery shaft. The HOBAS will also be used to repair the 300 feet of damaged interceptor pipe that was removed at was “Ground Zero” of the former sinkhole collapse. The smaller pipes snaking through the site are part of the dewatering process; 29 dewatering wells were drilled to lower groundwater levels below the damaged interceptor to facilitate excavation efforts.
HOBAS pipe being lowered into the recovery shaft. The pipe was manufactured in Houston, Texas, and two sections at a time are shipped the approximately 1,300 miles on flatbed trailers.
The “man cage,” with Commissioner Miller and Executive Hackel, reaches the bottom of the 65-foot deep recovery shaft.
Commissioner Miller, Executive Hackel, and Jay Dee Contractors observing the pipe lining process at the bottom of the shaft.
Jay Dee Contractors at the eastern end of what was the damaged interceptor pipe working with the “Batmobile,” a specialized piece of equipment that carries the HOBAS lining pipe for placement inside the 11-ft. diameter sewer pipe.
AEW’s Louis Urban, Project Manager, entering the interceptor at the east end of the recovery shaft where the HOBAS pipe is being installed.
The HOBAS is loaded onto the “Batmobile” that carries the pipe into the interceptor where it is used to line the 11-ft. diameter pipe. The pipe lining process started 3,700 feet from this location, the site of the former sinkhole, and each piece of HOBAS is 20 ft. long.
A reinforced steel, or “Re-Steel,” mat is being placed prior to pouring the concrete base slab that the HOBAS pipe will be placed on at the bottom of the recovery shaft.
Employees of Doetsch Environmental Services cleaning the sediment out of the pipeline west of the break in the interceptor.
Commissioner Miller and Executive Hackel address the media following their visit to the bottom of the recovery shaft.
AEW proudly serves as the lead consulting engineer on this important project that impacts 11 communities, Selfridge Air National Guard Base, 500,000 residents and thousands of businesses.
Founded in 1968, Anderson, Eckstein & Westrick (AEW) is a leading design firm providing civil engineering, architecture, geographic information systems (GIS) consulting and surveying services to municipal, institutional and private clients. We are committed to the enduring strength of our communities through innovation, value and engineering excellence.