{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-del-valle-ordinance-boat-launch",
        "evidence_ids": [
          "evidence-del-valle-ordinance-boat-launch"
        ],
        "predicate": "private_boat_launch",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2023-09-01"
        },
        "value": {
          "car_top": true,
          "size_restriction": null,
          "trailered": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-ordinance-boat-launch",
          "evidence_id": "evidence-del-valle-ordinance-boat-launch",
          "notes": "",
          "observation_id": "observation-ebrpd-ordinance-38-del-valle-boating",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "PDF pages 16, 18-19"
          ],
          "content": "Sections 501.2 and 503.4-503.9 allow car-top and trailered boats at Del Valle without size restriction; limit use to sunrise-sunset or posted hours; cap gasoline-powered boats at 10 mph; prohibit towing people and fuel/oil pollution; and regulate proximity to swim areas and swimmers.",
          "observation_id": "observation-ebrpd-ordinance-38-del-valle-boating",
          "observed_at": "2023-09-01T00:00:00+00:00",
          "observer": "Wayproof source review",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-ordinance-38-september-2023"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/sites/default/files/Ord38-09052023FINAL.pdf",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-ordinance-38-september-2023"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "lake-del-valle",
      "kind": "lake",
      "name": "Lake Del Valle"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-ordinance-38-del-valle",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-del-valle-ordinance-boat-launch.json",
      "reason": "Add September 2023 Ordinance 38 as primary regulatory evidence for Del Valle planning.",
      "record_id": "claim-del-valle-ordinance-boat-launch",
      "record_type": "claim",
      "summary": "Ingest the Ordinance 38 landing page and September 2023 PDF, separating district-wide and Del Valle-specific rules."
    }
  ],
  "navigation": {
    "next_id": "claim-del-valle-ordinance-boat-operating-rules",
    "position": 175,
    "previous_id": "claim-del-valle-ohlone-permit-page-statement",
    "total": 3965
  },
  "observations": [
    {
      "artifact_refs": [
        "PDF pages 16, 18-19"
      ],
      "content": "Sections 501.2 and 503.4-503.9 allow car-top and trailered boats at Del Valle without size restriction; limit use to sunrise-sunset or posted hours; cap gasoline-powered boats at 10 mph; prohibit towing people and fuel/oil pollution; and regulate proximity to swim areas and swimmers.",
      "observation_id": "observation-ebrpd-ordinance-38-del-valle-boating",
      "observed_at": "2023-09-01T00:00:00+00:00",
      "observer": "Wayproof source review",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-ordinance-38-september-2023"
    }
  ],
  "record": {
    "claim_id": "claim-del-valle-ordinance-boat-launch",
    "evidence_ids": [
      "evidence-del-valle-ordinance-boat-launch"
    ],
    "predicate": "private_boat_launch",
    "spatial_scope_ids": [
      "scope-lake-del-valle"
    ],
    "subject_id": "lake-del-valle",
    "temporal_scope": {
      "ends_on": null,
      "starts_on": "2023-09-01"
    },
    "value": {
      "car_top": true,
      "size_restriction": null,
      "trailered": true
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/sites/default/files/Ord38-09052023FINAL.pdf",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-ordinance-38-september-2023"
    }
  ]
}