Record: Compost temperature log, validated ammonia results, moisture assessment and the authorised release decision.
Draw hours across and 20 to 65 °C up, shade 45 to 52 and 58 to 59, and rule a red line at 60.
Log the compost probe every 2 hours and plot it.
During conditioning, record validated ammonia measurements and the process observations specified by the trained operator. Never use deliberate smelling as a release test.
Mark release only when the validated temperature, conditioning, ammonia and material acceptance criteria have all been met and recorded.