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  "road_source": "OpenStreetMap (local PBF extract)",
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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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  "notes": "Coarse pass: max 11.3% over 200 m (Terrain 50), gain 30.8 m over 650 m way. EXTENDED by graph walk: +15 segment(s) at base, +0 at top (stop: base=no_descending_continuation, top=no_ascending_continuation; min_avg=2.0%). Review before adopting. DEDUPE: absorbed 3 overlapping proposal(s): bolton-valley-access-road, discovered-lane-44-4159-72-8596, thatcher-road ADOPTED (NE wave 1, 2026-08-25): big-gain. Wales dials per PRODUCTION 'US ADOPTION DIALS'.",
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   "ept_source": "https://s3-us-west-2.amazonaws.com/usgs-lidar-public/VT_Statewide_2_A23",
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  "license_url": "https://howsteep.org/licensing.html"
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  "county": "Vermont"
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}