FAST-TRACK CLEANING

摘要

Remediation of a site with limited working room to a tight timescale while improving the ground conditions is the tough challenge facing Sirius at an old gasworks site in the seaside Yorkshire town of Scarborough. But despite the potential difficulties, Sirius technologies manager Elliott Haywood remains undaunted and is confident the project will be completed on time. The key to this confidence is the UK debut of a Komatsu Reterra mobile materials reprocessor, which Haywood says is helping to stabilise and improve the contaminated material without dust and minimal noise. The gasworks opened in 1893 and was closed in 1971, since when the site has had several owners and was initially used by Transco before the Scarborough Building Society (now part of Skipton Building Society) took over the offices. It is soon to be taken over by Scarborough Borough Council. "Our client Skipton wanted to sell the site," explains Haywood. "Some remediation was carried out in the 1990s but this only involved excavating and disposal of the material off site. This targeted the process areas and worked around the existing structures to meet the guidelines at the time. But to complete the sale of the site, work needed to be carried out to ensure the contamination was below the levels required by modern legislation." Sirius carried out a rigorous site investigation involving cable percussive techniques and trial pitting, after completing a review of existing information. "This helped us to identify the remaining areas of residual contamination," says Haywood. "There were pollutants that are typical for those found around gasworks that had the potential to leach into the groundwater and to reach receptors downstream from the site."