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  "road_source": "OpenStreetMap (local PBF extract)",
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  "osm_snapshot": "",
  "run_id": "us-west-portland",
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  "canopy_check": "unavailable \u2014 no surface model (DSM or point cloud) registered for this coverage",
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  "license_url": "https://howsteep.org/licensing"
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  "county": "Oregon"
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}