Measure material flows by mass and count diversion only when the destination can be evidenced.
W04SUSTAINABILITY CRITERION
Waste
Measure material flows by mass and count diversion only when the destination can be evidenced.
Verified diversion rate
% by mass
Weights by stream, collection dates, contamination notes, hauler destination, event boundary.
Verified non-disposal mass ÷ total measured waste mass × 100.05 · TARGET
Good / Better / Best
Use the threshold as an assessment reference. If an event adopts a different threshold, publish it before measurement and keep it stable for comparison.
GOOD≥70% verified diversion
BETTER≥85% verified diversion
BEST≥95% + contamination/destination checks
Minimum evidence
Scale tickets; hauler reports; destination receipts; contamination audit; material register.
Without source data, the criterion score is capped at 40/100.
Pre-publication check
- ✓All major streams use a mass basis
- ✓Destination is known, not assumed from bin color
- ✓Contamination is checked
- ✓Reuse is separated from recycling
- ✓Total mass reconciles across contractors