As part of a current research project funded by Innovate UK (part of UK Research and Innovation) the REA has reviewed its protocol for measuring physical contaminants in delivered biowastes, which was first published in June 2012. Following revision, the second version of this document was renamed the REA Biowaste Quality Assessment Methodology and published in May 2024.
The methodology sets out a procedure for sampling, visually assessing, categorising, recording and reporting different material types in incoming wastes delivered to facilities treating biodegradable wastes. It enables facilities to monitor waste quality, support contract negotiations, and ensure compliance with waste acceptance criteria.
Material categories are Target Materials, Non-Target Materials and Physical Contaminants, each with sub-categories the operator should check fits their facility’s legal (permit) and business requirements and do any necessary sub-category tailoring before sorting the sampled biodegradable waste. If necessary, the operator can move a Target Materials sub-category to a Non-Target materials category, or vice versa. E.g. Compostable bags, liners and sacks are a sub-category within Targeted Material as too is a sub-category for compostable packaging and non-packaging products other than compostable bags, liners and sacks.
Download the methodology and supporting annexes using the links below:
REA’s Biowaste Quality Assessment Methodology
Annex A – Compostable Product Certification Marks
Annex B – Biowaste Assessment Report Template
Contact us at the REA with any questions or suggestions for improvement.