{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-dumbarton-quarry-campground-profile",
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          "evidence-dumbarton-quarry-campground-profile"
        ],
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        ],
        "subject_id": "campground-dumbarton-quarry",
        "temporal_scope": null,
        "value": {
          "checkin": "14:00",
          "checkout": "12:00",
          "coyote_hills_parking_with_active_reservation": true,
          "dump_station": false,
          "full_hookup_amp": 50,
          "gate_hours": "08:00-22:00",
          "hot_showers": true,
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          "restrooms": true,
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          "unpaved_water_only_sites": 3,
          "year_round": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-dumbarton-quarry-campground-profile",
          "evidence_id": "evidence-dumbarton-quarry-campground-profile",
          "notes": "The official campground page directly publishes inventory, services, hours, and rules.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Camping Fees and Charges",
            "Campground Rules"
          ],
          "content": "The current campground page describes 63 year-round drive-in sites: 60 paved full-hookup sites and three unpaved water-only sites. It publishes a 12-week maximum and two-business-day minimum booking window; $45 water-only, $65 full-hookup, $8 overflow parking and $8 reservation fees; a reservation-based Coyote Hills parking benefit; gate, quiet, capacity, vehicle, stay, pet, fire, alcohol, smoking, generator, and other campground rules.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-21T00:00:00-07:00",
          "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/dumbarton-quarry/campground",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-dumbarton-quarry-fees",
        "evidence_ids": [
          "evidence-dumbarton-quarry-fees"
        ],
        "predicate": "fees",
        "spatial_scope_ids": [
          "scope-dumbarton-quarry-campground"
        ],
        "subject_id": "campground-dumbarton-quarry",
        "temporal_scope": null,
        "value": {
          "full_hookup_site_usd": 65,
          "overflow_parking_per_vehicle_usd": 8,
          "reservation_fee_usd": 8,
          "water_only_site_usd": 45
        }
      },
      "evidence": [
        {
          "claim_id": "claim-dumbarton-quarry-fees",
          "evidence_id": "evidence-dumbarton-quarry-fees",
          "notes": "The official page publishes campsite, overflow-parking, and reservation fees.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Camping Fees and Charges",
            "Campground Rules"
          ],
          "content": "The current campground page describes 63 year-round drive-in sites: 60 paved full-hookup sites and three unpaved water-only sites. It publishes a 12-week maximum and two-business-day minimum booking window; $45 water-only, $65 full-hookup, $8 overflow parking and $8 reservation fees; a reservation-based Coyote Hills parking benefit; gate, quiet, capacity, vehicle, stay, pet, fire, alcohol, smoking, generator, and other campground rules.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-21T00:00:00-07:00",
          "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/dumbarton-quarry/campground",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-dumbarton-quarry-reservation-window",
        "evidence_ids": [
          "evidence-dumbarton-quarry-reservation-window"
        ],
        "predicate": "reservation_window",
        "spatial_scope_ids": [
          "scope-dumbarton-quarry-campground"
        ],
        "subject_id": "campground-dumbarton-quarry",
        "temporal_scope": null,
        "value": {
          "channel": "online_or_phone",
          "maximum_advance_weeks": 12,
          "minimum_advance_business_days": 2
        }
      },
      "evidence": [
        {
          "claim_id": "claim-dumbarton-quarry-reservation-window",
          "evidence_id": "evidence-dumbarton-quarry-reservation-window",
          "notes": "The official campground page states a 12-week maximum and two-business-day minimum reservation window.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Camping Fees and Charges",
            "Campground Rules"
          ],
          "content": "The current campground page describes 63 year-round drive-in sites: 60 paved full-hookup sites and three unpaved water-only sites. It publishes a 12-week maximum and two-business-day minimum booking window; $45 water-only, $65 full-hookup, $8 overflow parking and $8 reservation fees; a reservation-based Coyote Hills parking benefit; gate, quiet, capacity, vehicle, stay, pet, fire, alcohol, smoking, generator, and other campground rules.",
          "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-21T00:00:00-07:00",
          "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/dumbarton-quarry/campground",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "campground-dumbarton-quarry",
      "kind": "campground",
      "name": "Dumbarton Quarry Campground"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260921-parks-deep-batch-01-campgrounds",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/observations/observation-ebrpd-dumbarton-quarry-camping-20260921.json",
      "reason": "Capture the official campground publication observed on 2026-09-21.",
      "record_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
      "record_type": "observation",
      "summary": "Deepen Anthony Chabot and Dumbarton Quarry campground knowledge through the existing evidence, planning, publication, and website flow."
    }
  ],
  "navigation": {
    "next_id": "observation-ebrpd-dumbarton-quarry-visitor-profile",
    "position": 87,
    "previous_id": "observation-ebrpd-dublin-hills-visitor-profile",
    "total": 1318
  },
  "observations": [
    {
      "artifact_refs": [
        "Camping Fees and Charges",
        "Campground Rules"
      ],
      "content": "The current campground page describes 63 year-round drive-in sites: 60 paved full-hookup sites and three unpaved water-only sites. It publishes a 12-week maximum and two-business-day minimum booking window; $45 water-only, $65 full-hookup, $8 overflow parking and $8 reservation fees; a reservation-based Coyote Hills parking benefit; gate, quiet, capacity, vehicle, stay, pet, fire, alcohol, smoking, generator, and other campground rules.",
      "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-21T00:00:00-07:00",
      "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
    }
  ],
  "record": {
    "artifact_refs": [
      "Camping Fees and Charges",
      "Campground Rules"
    ],
    "content": "The current campground page describes 63 year-round drive-in sites: 60 paved full-hookup sites and three unpaved water-only sites. It publishes a 12-week maximum and two-business-day minimum booking window; $45 water-only, $65 full-hookup, $8 overflow parking and $8 reservation fees; a reservation-based Coyote Hills parking benefit; gate, quiet, capacity, vehicle, stay, pet, fire, alcohol, smoking, generator, and other campground rules.",
    "observation_id": "observation-ebrpd-dumbarton-quarry-camping-20260921",
    "observed_at": null,
    "observer": "Wayproof live source review",
    "retrieved_at": "2026-09-21T00:00:00-07:00",
    "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
  },
  "record_type": "observation",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/dumbarton-quarry/campground",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-dumbarton-quarry-campground-page"
    }
  ]
}