Percentage of Compostables (KPI-9)

Percentile of the waste which includes both organic rejects and other compostable material which are deemed unsuitable for regular recycling – measured by weight at the end of the day against the total waste stream handled.

• Acceptable average – <15%

Intervening Variables

• Percentage of Segregation and Moisture as they can dampen or soil certain recyclables such as paper & cardboard consigning them to the compostable stream.
• The organic residue in improperly segregated waste streams adds up to the percentile.

Confounding Variables

• Power outages and machinery breakdowns interfere with end weighment procedures and show false results
• A single special stream, depending on its nature can cause apparent increases in percentiles.
• Special activities such as clearing of backlogs can interfere with observations.
• Designation of Recyclables.