Chalfont Heights | Chalfont Heights Road Committee

Posts Tagged ‘Leak’

Chiltern Hill Leak – Latest Update From Bob Burge

Posted on: September 13th, 2012 by Alan Lane
A two man team from Thames Water contractors, Cappagh, arrived on site this morning and commenced hand clearing the site in the area of the sewer pipe. Cappagh Contracts supervisor arrived shortly afterwards and was very unhappy with the condition of the site and immediately closed it down on health and safety grounds; both to work crew and general public. He organised grab lorries to clear all current spoil, erection of steel fence sections around the site to protect public, and a trench box to protect crews working in the hole.
He also requested a CCTV camera to insert into the sewer pipe to establish the full extent of the damage, the results of which will determine the extent of any further excavation of the road in the vicinity of the current site. He estimates that the work will take between 2/3 days from now depending upon the results of the camera insertion.

Collapsed Pipe Chiltern Hill – Update

Posted on: September 10th, 2012 by Alan Lane

With thanks to Bob Burge and Mark Simmons, the news today is that:

Contractors for Thames Water have exposed the sewage pipe and confirmed that it had collapsed. They advised that the break did not appear to be confined to the immediate area of the inital break but extended back for an as yet undetermined distance, in the direction of the island at the junction of Chiltern Hill with Ellis Avenue.

They did not have the equipment to proceed further during today and departed in the early evening indicating that a larger team with appropriate machinery and shoring for the walls of the hole would return on Tuesday morning.

Since the breakage has effectively blocked the line at this location, the suction tanker will stay on site throughout the night (Mon-Tues) to remove waste coming down from upper Chiltern Hill. No properties below the breakage will be affected, as the pipe in this area is intact and operational.

Further updates will follow in due course.

Chiltern Hill: update from Roads Committee, evening of Saturday 8th Sept

Posted on: September 9th, 2012 by Alan Lane

Road works following burst pipe on Chiltern Hill

A representative of Thames Water came to the site on Saturday morning to assess the work.  A Thames Water contractor will come to site on Monday morning to start repairing the sewer.  They were not keen to start work on the sewer before co-ordinating the work with the water company, Veolia — hence the slight delay.  We have now arranged for Veolia to attend as well on Monday morning as well as there is a slight risk that further excavation to repair the sewer could cause more ground movement and further damage to the water main.

However the sewer remains blocked, so Thames Water has arranged for a suction tanker to attend site until 2200 tonight and from 0800 to 2200 tomorrow to pump out the excavation and sewers if required.

Once Thames Water has repaired the sewer, a surfacing contractor will return to reinstate the road.  It is likely that Chiltern Hill will remain blocked until at least Tuesday.

Additionally, after the sewer is repaired and before the road repair is completed the Roads Committee may contact BT and SSE/EDF to request they carry out an inspection their assets, as these also look to have settled.  This would avoid any later need to have a second set of excavations to repair those assets as well.  The gas pipe looks ok at the moment as it is on the other side of the road and there is no movement there at the moment.