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  "notes": "NE box session: masked re-batch, NHD flowline-crossing evidence per ne-vdip-mask-manifest.csv (2026-08-25). ADOPTED (NE wave 1, 2026-08-25): clean-steep. Wales dials per PRODUCTION 'US ADOPTION DIALS'. MASKED RE-BATCH (2026-08-25): culvert-class V-dip masks applied (NHD flowline / xsection channel-crossing evidence, ne-adoption-audits); superseded values in B2 redo trees.",
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  "license_url": "https://howsteep.org/licensing.html"
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}