{
  "claims": [
    {
      "claim": {
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        "evidence_ids": [
          "evidence-ebrpd-dumbarton-quarry-visitor-profile"
        ],
        "predicate": "visitor_profile",
        "spatial_scope_ids": [
          "scope-dumbarton-quarry-campground-on-the-bay"
        ],
        "subject_id": "park-dumbarton-quarry-campground-on-the-bay",
        "temporal_scope": null,
        "value": {
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            "bayview_to_shoreline_trail_miles": 2.05,
            "entrance": "Quarry Road"
          },
          "acreage_phase_one": 45,
          "activities": [
            "biking",
            "camping",
            "dogs",
            "hiking",
            "horseback riding",
            "kid-friendly",
            "picnicking"
          ],
          "address": "9400 Quarry Road, Fremont, CA 94555",
          "campground": {
            "facilities": [
              "camp store",
              "amphitheater",
              "playground",
              "Wi-Fi",
              "picnic areas"
            ],
            "full_service": true,
            "reservation_window_weeks": 12,
            "sites": 63
          },
          "gate_hours": "08:00–22:00",
          "opened": 2021,
          "parking_fee_usd": 5,
          "published_hours": "open dusk to dawn unless otherwise posted or permitted",
          "relationship": {
            "contained_in": "Coyote Hills Regional Park",
            "nearby": [
              "Ardenwood Historic Farm",
              "Mission Peak Regional Preserve",
              "Don Edwards National Wildlife Refuge"
            ]
          },
          "restrictions": {
            "dogs_in_coyote_hills_marsh": false,
            "ground_fires": false,
            "horses_in_coyote_hills_marsh": false,
            "picnic_reservation_minimum_business_days": 3
          },
          "seasonal_kiosk_hours": "08:00 opening; closing varies from 18:00 to 21:00 by month"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-dumbarton-quarry-visitor-profile",
          "evidence_id": "evidence-ebrpd-dumbarton-quarry-visitor-profile",
          "notes": "Direct transcription and conservative structuring of planning-relevant fields from the official park page.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-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-dumbarton-quarry-visitor-profile",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T07:00:00+00:00",
          "source_id": "source-ebrpd-dumbarton-quarry-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/dumbarton-quarry",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-dumbarton-quarry-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "park-dumbarton-quarry-campground-on-the-bay",
      "kind": "park",
      "name": "Dumbarton Quarry Campground on the Bay"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-parks-batch-08",
      "evidence_refs": [
        "evidence-ebrpd-dumbarton-quarry-visitor-profile"
      ],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-dumbarton-quarry-visitor-profile.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "claim-dumbarton-quarry-visitor-profile",
      "record_type": "claim",
      "summary": "Add four additional previously uncaptured EBRPD park visitor profiles."
    }
  ],
  "navigation": {
    "next_id": "claim-eagle-peak-yosemite-published-profile",
    "position": 205,
    "previous_id": "claim-dumbarton-quarry-reserveamerica-terms",
    "total": 3965
  },
  "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-dumbarton-quarry-visitor-profile",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T07:00:00+00:00",
      "source_id": "source-ebrpd-dumbarton-quarry-park-page"
    }
  ],
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    "claim_id": "claim-dumbarton-quarry-visitor-profile",
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      "evidence-ebrpd-dumbarton-quarry-visitor-profile"
    ],
    "predicate": "visitor_profile",
    "spatial_scope_ids": [
      "scope-dumbarton-quarry-campground-on-the-bay"
    ],
    "subject_id": "park-dumbarton-quarry-campground-on-the-bay",
    "temporal_scope": null,
    "value": {
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      },
      "acreage_phase_one": 45,
      "activities": [
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        "hiking",
        "horseback riding",
        "kid-friendly",
        "picnicking"
      ],
      "address": "9400 Quarry Road, Fremont, CA 94555",
      "campground": {
        "facilities": [
          "camp store",
          "amphitheater",
          "playground",
          "Wi-Fi",
          "picnic areas"
        ],
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        "reservation_window_weeks": 12,
        "sites": 63
      },
      "gate_hours": "08:00–22:00",
      "opened": 2021,
      "parking_fee_usd": 5,
      "published_hours": "open dusk to dawn unless otherwise posted or permitted",
      "relationship": {
        "contained_in": "Coyote Hills Regional Park",
        "nearby": [
          "Ardenwood Historic Farm",
          "Mission Peak Regional Preserve",
          "Don Edwards National Wildlife Refuge"
        ]
      },
      "restrictions": {
        "dogs_in_coyote_hills_marsh": false,
        "ground_fires": false,
        "horses_in_coyote_hills_marsh": false,
        "picnic_reservation_minimum_business_days": 3
      },
      "seasonal_kiosk_hours": "08:00 opening; closing varies from 18:00 to 21:00 by month"
    }
  },
  "record_type": "claim",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/dumbarton-quarry",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-dumbarton-quarry-park-page"
    }
  ]
}