South Wales Wood Recycling Ltd at Newport Docks has an estimated 20,000 tonnes of woodchip waste onsite awaiting recovery.
The operator is removing large amounts of wood chippings to another area of the docks to speed up work to stop it from smoking.
This has resulted in the release of more smoke and steam in the short term and we are monitoring air quality as a precaution.
The monitoring will continue and it has been estimated by the operator that the situation will be under control by the weekend.
An investigation is ongoing and NRW will take the appropriate action if necessary.
“The operator has stepped up activity in the last few days which should tackle the problem sooner rather than later.