ENVA Composting Site, Blantyre
The ENVA composting site accepts green waste, primarily from Local Authority food and garden waste bin collections. This is treated through in-vessel composting. This process must be managed and controlled, to prevent odour release that can impact people living nearby.
ENVA operate the site within the terms of a permit granted under the Environmental Authorisations (Scotland) Regulations (2018).
We regulate and inspect the site, and take odour complaints seriously. We work with the operator to address issues and ensure compliance.
Visit Zero Waste Scotland's website for a general overview of in-vessel composting.
Latest update
On-site treatment of waste
Date published: 30 July 2026
In March 2023, SEPA served an Enforcement Notice which required Enva Organics Recycling Limited to take actions to prevent the release of offensive odours. In response to this notice, the in-vessel composting treatment of co-mingled food and green waste at this site ceased while the operator carried out infrastructure upgrades. Some, less odorous, treatment activities have continued on site.
Following an application to vary the permit to authorise these changes to site infrastructure and processes, we completed a draft variation of the permit.
Our consultation on the draft variation was open from 1 July to 29 July 2026.
The operator has carried out extensive improvement works which have comprised of:
• enclosure of the maturation shed
• installation of an Aerated Static Pile (ASP) system in the maturation shed
• replacement of the existing composting vessels (IVCs) with enclosed in-vessel composting tunnels
• upgraded odour abatement plant to treat air from the enclosed plant
• upgrades to other site infrastructure including surfacing and water management.
We have assessed the variation application and consider these infrastructure upgrade proposals to be in line with Best Available Techniques (BAT) to manage odour on a composting site.
The varied permit includes robust monitoring requirements and emission limit values (ELVs) in line with BAT to ensure compliance and protect the local community.
It is standard practice for an activity of this kind, that the operator must undertake commissioning of the new plant prior to commencing waste treatment activities. Commissioning is expected to commence in late July/early August 2026.
View previous updatesWhat we have done
We continue to assess permit compliance. When commissioning commences, we will undertake a program of proactive odour monitoring in the vicinity of the site. We will take action if there are any breaches of odour conditions or emission limit values (ELVs).
Report an odour
There are different ways to report, depending on the type of odour:
1. The area surrounding the ENVA composting site contains several potential odour sources, including field spreading activities. Therefore, what you are experiencing may not be the ENVA composting site.
If you are impacted by a sewage odour (including from farm spreading), contact your Local Authority.
2. Potential odours from the ENVA composting site can include:
a sour composting odour
a fresh waste 'bin' odour
burnt acrid odour.
If you are impacted by these odours, report to us. It is helpful to be as descriptive as possible.