Case Study

	Please click on images to enlarge
	Lime stabilisation
	Pipe jacking set up
	Remote-controlled piling rig

Boundary Mill Retail Development, Colne

This is a site enabling contract for a new retail store and office park development constructed in partnership with Barnfield Developments.

It is a  previously mixed use site that is being reclaimed including the removal and screening of an old, abandoned household refuse tip and eradicating Japanese Knotweed.

80% of the refuse tip is screened and reused as general site fill, the remainder going to licenced landfill. Lime stabilisation is used to improve 14,000 cub m of the 80,000 cub m of earthworks and also strengthens sub grades beneath building platforms and access roads.

Recycling and soil improvements have reduced vehicle movements to/from the site by almost 9000.

A new highway junction is formed from an existing trunk road roundabout and almost 1.5km of access road built.
Site works include over 900 car parking spaces for staff and customers, 12 coach parking spaces and facilities for HGV delivery vehicles serving the new store.

There is over 1,000 lm of surface water trunk sewers of 1500 and 900 mm diameter acting as a storage and attenuation network in conjunction with six hydrobrakes positioned at key manholes. Prior to out-falling into a nearby brook the flows pass through an oil/fuel interceptor with a maximum flow regulated at 72 litres per second.

Part of the diverted section, which is within 15m of a dual carriageway, is increased to 1800mm diameter and constructed as a pipe jack 10m deep. This was Ascot's suggestion to avoid possible lateral damage to the highway assets had open cut methods been used.