T29 exemption allows farmers, landscapers and other land managers to treat non-hazardous pesticide washings produced during their work.
Source
https://www.gov.uk/guidance/waste-exemption-t29-treatment-of-non-hazardous-pesticide-washings-by-carbon-filtration-for-disposalCanonical document at the regulator. Always cite this URL — not the Vantage detail page — in compliance evidence.