- Affected Area: Measure the total area of the park that has been cleaned and decontaminated, expressed in square meters or hectares.
- Weigh or Size of waste Recollected: Quantify how much waste we take off from public spaces.
- Reduction of Visible Waste: Quantify the reduction of visible waste in the park, before and after the intervention.
- Number of Trees Planted: If decontamination includes planting new vegetation, count the number of trees or plants introduced, as this contributes to environmental improvement and carbon sequestration.
- Public Perception Surveys: Measure public perception of the park's cleanliness and safety through surveys conducted before and after the interventions.