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EPA predictive trash model (ETAP) aligns with observed data but not a replacement for monitoring, committee says

California Water Quality Monitoring Council · October 24, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

A committee member compared EPA's Escape Trash Assessment Protocol (ETAP) risk maps to multi-year trash observations in Central Coast cities and found spatial alignment; members said the model could direct monitoring but cannot replace field observations needed for compliance and permit evidence.

A comparison of EPA's Escape Trash Assessment Protocol (ETAP) predictive outputs and multi-year local trash observations showed similar spatial patterns in several Central Coast cities, a presenter said, but committee members cautioned that model outputs should augment, not replace, direct monitoring.

"So far so good," the presenter said after showing side‑by‑side screenshots for Santa Cruz, noting downtown and river-adjacent areas had higher modelled trash risk and matched observed…

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