More than 60,000 tonnes of soil will be removed by 6,000 eight wheeler trucks working five days a week and at night over an 18 month period.

Two weeks ago Transport for London (TfL) met with members of OurPlaceChigwell at the Police Met Hall to discuss works planned along the Tube line from Grange Hill to Chigwell stations.

After the campaigners argued against the felling of trees and complained they were not properly informed about the works, TfL's local communities and partnerships Esther Johnson wrote a letter explaining the planned works in more detail.

The TfL owned land spans 481 metres and is unstable, requiring a number of commissioned surveys to identify how to fix it.

Once completed, trees and shrubs will be cleared, earth regraded and piles bored into the foundation.

She wrote: "It is anticipated that this work will take place over an 18 month period, subject to a number of variables such as weather conditions.

"I can advise that the majority of the works will be carried out from 8am to 6pm on Mondays through to Saturdays.

"However, due to the complexity of the programme, there will be short periods of time when working outside of these hours is required.

"This is because this work will require access to the track and will therefore need to take place when London Underground trains are not running.

"Some elements of the piling work may also need to be carried out overnight because of the complexity of the work involved.

"Under these circumstances, we will write to residents in advance to provide notice of this temporary change to schedule."

The main access point for works will be from Hainault Road and The Chase, where a dropped kerb will allow vehicles through.

A key concern for campaigners has been the number and regularity of trucks, which Ms Johnson confirmed would reach around 6,000 in terms of vehicle movements to carry 60,000 tonnes of vegetation away.

A survey of the road has been conducted to ensure deterioration from the lorries is recorded and subsequently fixed, with sweepers clearing the detritus away each day.

Ms Jonson added: "We do not currently plan to introduce parking restrictions.

"However, parking restrictions may have to be implemented on a temporary basis to allow construction vehicles to make deliveries to the site."

She also said that any requests for compensation should be made to TfL Customer Service, 4th Floor, 14 Pier Walk, London, SE10 0ES