Alan Dickens, Brunswick Heads
The Echo published my letter to the editor go with the flow – I need to correct the figure given as the cost for the work done on sewer pump station 4001 in Stuart Street Mullumbimby and the rising main running out of 4001.
The cost is $764,000 approximately. This figure was on the BSC Water & Recycling (W&R) website just before the last Federal Election as a future project to be completed.
The senior design engineer in W&R gave two reasons for the necessity of this project, firstly the pump station needed to be augmented to accommodate the extra flow from the lot 22 development and that the rising main delivering sewerage from 4001 pump station was past its use-by and had to be replaced.
This work has now been completed as stated on the W&R website in July 2019.
To my knowledge, lot 22 has not yet been approved by the elected council, and secondly if the rising main was past its use-by date, and had to be replaced, you would think this was for structural reasons.
As the rising main was laid at the same time as the sewer gravity mains in 1963 what does this say about the gravity mains’ structural integrity?
Why is BSC still spending 2.5 million dollars, over the next five years, investigating surface infiltration, even after the local Hydrologist, Duncan Dey, confirmed the main infiltration problem as being caused by the rising water-table during heavy and prolonged rain events rising over the sewer gravity-mains and entering them?