EPA's published walkability score (1–20) per block group, aggregated to tract. A cross-check — compared against our OSM-derived walk_pois in /lab rather than scored from. Where they diverge, we show it.
data/still/raw/), the source of truth (ADR-0023). Source: https://www.epa.gov/smartgrowth/smart-location-mapping. Layer: layer.geojson; combined score: /poc/; scoring trace: /lab/.