Industrial waste was buried at the site in the 1960s

Householders living close to Brofiscin Quarry in Groesfaen, near Cardiff, have been told to keep away from the site as materials buried there more than 30 years ago have risen to the surface, contaminating water and posing potential health risks.

Rhondda Cynon Taff Council is waiting for the results of further tests in the investigation involving Environment Agency Wales, Bro Taf Health Authority and the Food Standards Agency.

In the meantime, it has set up an exhibition in the village for people living in the area who are worried about the effects vapours from the site - a special wildlife area - could have on their health.

'Emissions'

A newsletter has also been sent to nearby residents and a telephone helpline has also been set up.

We are continuing with the testing of the site and know that there is a plethora of different things ther Spokeswoman, Rhondda Cynon Taff Council

"The exhibition has been set up to explain what's happening," said a spokeswoman from the council.

"It is fully manned by people who are experts in their field and who can answer the queries people may have.

"We are continuing with the testing of the site and know that there is a plethora of different things there.

"We are also testing the emissions in various areas of the village.

"A newsletter was sent out to residents on Friday and we will be sending out more newsletters as soon as we have any new information," she added.

The village of Groesfaen neighbours the quarry

But Ed Prosser, who is the assistant manager of the Dynevor Arms pub in the village, said that many people were not aware of the location of the exhibition.

"There is a portable cabin opposite the pub but not many people I've spoken to know that that is where the exhibition is being held," he said.

"Even though people have had information about what is going on through a newsletter, there are some who are still concerned.

"We have had a few people in the pub who are worried about what is going on up there.

"One or two of them are worried because they live quite close to the quarry and are worried that they may be living on dangerous land," he added.

In March, the council said that Environment Agency reports into the quarry showed waste buried between 1965 and 1970 was now causing unknown "vapours" to rise from the site.

Tests carried out at nearby homes and gardens showed only average readings, although further tests are being carried out.

The exhibition is open daily from 0900 GMT until 1700 GMT - the helpline number is 01443 409 759