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  "road_source": "OpenStreetMap (local PBF extract)",
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  "osm_snapshot": "",
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  "elevation_licence": "Public domain \u2014 USGS 3DEP 1 m DEM, courtesy of the U.S. Geological Survey",
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  "license": "ODbL-1.0",
  "license_url": "https://howsteep.org/licensing"
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  "county": "California"
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}