CHEMICAL substances have been found in a watercourse near a trouble-hit site.

An investigation into the brook on the former Nipa Laboratories site in Oswaldtwistle was launched after an outcry from residents.

The site, which was used as an illegal flytipping site created a plague of flies in the area last summer.

Further environmental damage was feared when the huge bales of waste were set on fire in an arson attack.

The spotlight was centered on Lottice Brook, after residents feared surface water and disturbances on the former chemical site had created disturbances.

After months of regular inspections at the site, the Environment Agency have confirmed the presence of Creosote and DDT in the watercourse.

Creosote, a byproduct obtained by the distillation of a tar and DDT, a banned insecticide, are thought to be associated with materials from the old Nipa site.

Oswaldtwistle councillor Peter Britcliffe said: “The condition of the brook is a major concern to people in this area. Ongoing testing is still most definitely needed. I would encourage the Environement Agency to continue because we need a close eye to be kept on the brook.”

A report to Oswaldtwistle Area Council said Environment Agency officials had found ‘elevated levels’.

EA officer Steve Molyneux said some samples had shown levels ‘just above environmental quality standards’.

Tests had taken place at various locations in the brook at different times of year and in various weather conditions. However further substantial testing was needed to verify a proper analysis.

When testing began last year, the EA put in place a sampling and monitoring regime. The agency had also made landowner Lockgate Mount Ltd aware that surface water management may be required on site to protect the stream.

Coun Britcliffe said: “As well as all the other problems which have affected the site, there is also recent extreme weather to consider. If we have more deluges this summer then contaminanted water could flood and be washed away.”

A spokesman for the Environment Agency said they would continue to monitor the brook.