{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-hayward-visitor-profile",
        "evidence_ids": [
          "evidence-ebrpd-hayward-visitor-profile"
        ],
        "predicate": "visitor_profile",
        "spatial_scope_ids": [
          "scope-hayward-regional-shoreline"
        ],
        "subject_id": "park-hayward-regional-shoreline",
        "temporal_scope": null,
        "value": {
          "access": [
            "West Winton Avenue entrance and staging area",
            "Grant Avenue staging area",
            "Breakwater Avenue walk-in entrance"
          ],
          "accessible_facilities": [
            "parking stalls at Grant and West Winton staging areas",
            "drinking fountain at West Winton"
          ],
          "acreage": 1841,
          "activities": [
            "biking",
            "dogs",
            "fishing",
            "hiking",
            "picnicking"
          ],
          "address": "3050 West Winton Avenue, Hayward, CA 94545",
          "dog_rule": "dogs are not allowed south of the West Winton Avenue flood-control channel",
          "fishing": {
            "allowed": "from levees except marsh areas",
            "california_license_required_age": 16
          },
          "gate_hours": "07:00–17:00 year-round",
          "habitats": [
            "salt marsh",
            "freshwater marsh",
            "brackish marsh",
            "seasonal wetlands"
          ],
          "hours": "05:00–22:00 unless otherwise posted or permitted",
          "parking_fee_usd": 0,
          "picnicking": {
            "allowed": true,
            "benches_along_trail": true,
            "tables": false
          },
          "trail_miles": 5,
          "trail_rule": "remain on trail and observe signed restricted areas to protect nesting and feeding wildlife",
          "trail_surface": "gravel"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-hayward-visitor-profile",
          "evidence_id": "evidence-ebrpd-hayward-visitor-profile",
          "notes": "Direct transcription and conservative structuring of planning-relevant fields from the official park page.",
          "observation_id": "observation-ebrpd-hayward-visitor-profile",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Overview",
            "To Reach The Park",
            "Attractions"
          ],
          "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
          "observation_id": "observation-ebrpd-hayward-visitor-profile",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T07:00:00+00:00",
          "source_id": "source-ebrpd-hayward-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/hayward",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-hayward-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "park-hayward-regional-shoreline",
      "kind": "park",
      "name": "Hayward Regional Shoreline"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-parks-batch-08",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-hayward-visitor-profile.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "observation-ebrpd-hayward-visitor-profile",
      "record_type": "observation",
      "summary": "Add four additional previously uncaptured EBRPD park visitor profiles."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-huckleberry-visitor-profile",
    "position": 94,
    "previous_id": "observation-ebrpd-garin-visitor-profile",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [
        "Overview",
        "To Reach The Park",
        "Attractions"
      ],
      "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
      "observation_id": "observation-ebrpd-hayward-visitor-profile",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T07:00:00+00:00",
      "source_id": "source-ebrpd-hayward-park-page"
    }
  ],
  "record": {
    "artifact_refs": [
      "Overview",
      "To Reach The Park",
      "Attractions"
    ],
    "content": "The live park page publishes the visitor profile represented by the associated claim, including access, operating information, facilities, and material restrictions.",
    "observation_id": "observation-ebrpd-hayward-visitor-profile",
    "observed_at": null,
    "observer": "Wayproof live source review",
    "retrieved_at": "2026-09-20T07:00:00+00:00",
    "source_id": "source-ebrpd-hayward-park-page"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/hayward",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-hayward-park-page"
    }
  ]
}