Two tyre-burning kilns at the Lafarge plant at Westbury have exceeded the permitted emission levels of hydrogen chloride and oxides of nitrogen, says the Environment Agency.
The Environment Agency has served an enforcement notice on the firm. Lafarge has until 5 April to carry out a review to pinpoint what actions it needs to take to comply with the new permit limits.
Jim Flory of the Environment Agency said the notice spelled out "specific actions and timescales for (Lafarge) to ensure the works meet the conditions of the permit". He said: "The limits are set well below the environmental thresholds and safety limits, so the breaches have not caused any harm and will not affect the environment or people’s health.
"However, we are very concerned that the works are not meeting their new conditions and this is why we have issued this enforcement notice."
Lafarge said it has undertaken ’a detailed investigation’; The breach has posed no threat to health or the environment