CAMPAIGNERS fear a cocktail of toxic chemicals will be released into the atmosphere if planning permission is granted for a housing development on the site of a former clay pit in Middlesbrough.

Hundreds of residents have signed a petition trying to block an application by Haslam Homes to build 75 properties on a former football training ground, to the west of Hutton Road.

An analytical report into the chemical make-up of the soil indicates a high concentration of contaminants, including arsenic, cadmium, lead, zinc and boron, above the safe level for domestic gardens and allotments.

Longlands neighbourhood watch co-ordinator Barbara Redman said: "The level of contamination is above what it should be to build homes on the land and boring into the field would release the chemicals and they are going to become airborne."

Longlands and Marton Grove Community Council held a meeting on Monday to register its objection to the proposals.

Ward councillor Bob Kerr said: "There are some very serious concerns amongst residents about traffic levels and the contamination of the soil.

"The developers have promised to take steps to prevent the pollutants being released but we are still concerned that will not solve the problem."

Haslam Homes North-East regional managing director Mike Croft said: "We approach all projects with the utmost care and concern for the environment and the communities with whom we work.

"The plan for remedial work will not take place until it has the full approval of the Local Authority and the Environment Agency, who will monitor the work in progress."

The application may go before Middlesbrough Council's planning committee next month. A definite date will not be set until information about land contamination has been received by the council.