Redhill 'rotten egg' rubbish dump tests delayed
Tests to determine whether gas from a Surrey rubbish dump poses a health risk could not take place because of a lack of samples, Public Health England said.
Residents living near the site in Redhill have been complaining about a "rotten egg" smell since January and want to know if the gas is harmful.
Operator Biffa has blamed heavy rainfall for delaying planned work to increase gas collection.
It said it would carry out an engineering review of the site.
The company has installed a flare stack to burn off excess gas as a temporary measure.
Katie Pruszynsky, who lives at the nearby Watercolour estate, said that as well as the rotten egg smell there was now an acrid, burning odour.'Can't open windows'
"We don't know if it's 100% safe. We have children and families who want to be outside and who want to open their windows and can't," she said.
On the testing delay, she said: "It's extremely disappointing and residents will want to know why that wasn't planned for in the first place."
Robie Kamanyire, unit head at Public Health England's environmental hazards and emergencies department, said: "We have information on one chemical, which is hydrogen sulphide. We're aware that there are some other chemicals that might be released.
"So we are encouraging the Environment Agency to provide us with some sampling for other compounds, such as volatile organic compounds.
"And we are also looking for data over longer time periods - we currently have a number of snapshots, but we need a fuller picture."