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Assessing Changes in Trash Levels Over Time On-land Visual Trash Assessment (OVTA) protocols involve the following general steps for specified land areas with established baseline trash levels: 1. Schedule each OVTA so that it falls roughly half-way between reoccurring control measures (e.g., street sweeping) and does not follow a significant Read more…

In the early 2010s, EOA, Inc. developed OVTA protocols to measure trash generation in cities hydrologically connected to San Francisco Bay.  OVTA results helped inform major municipal decisions and policies to reduce trash loading into local waterways – including local single-use plastic bag ban ordinances and trash capture device installation Read more…