{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-las-trampas-corral-profile",
        "evidence_ids": [
          "evidence-las-trampas-corral-official-profile"
        ],
        "predicate": "site_inventory",
        "spatial_scope_ids": [
          "scope-las-trampas-corral-group-camp"
        ],
        "subject_id": "group-camp-las-trampas-corral",
        "temporal_scope": null,
        "value": {
          "bring_own_water": true,
          "minimum_advance_business_days": 3,
          "park_water_supply_reliable": false,
          "reservation_channel": "phone",
          "reservation_required": true,
          "site_type": "overnight_group_camp"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-las-trampas-corral-profile",
          "evidence_id": "evidence-las-trampas-corral-official-profile",
          "notes": "The official park page establishes the camp, booking lead time, and unreliable water supply.",
          "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Group Camping",
            "Hours"
          ],
          "content": "The official Las Trampas page identifies the Corral Area as a reservable overnight group camp and requires reservations at least three business days ahead. Campers must bring their own water because the park supply is inconsistent and can be unavailable. The page publishes seasonal park hours and says public Wi-Fi is unavailable.",
          "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
          "observed_at": null,
          "observer": "Wayproof web source review",
          "retrieved_at": "2026-09-22T00:00:00-07:00",
          "source_id": "source-ebrpd-las-trampas-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/las-trampas",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-las-trampas-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-las-trampas-visitor-profile",
        "evidence_ids": [
          "evidence-ebrpd-las-trampas-visitor-profile"
        ],
        "predicate": "visitor_profile",
        "spatial_scope_ids": [
          "scope-las-trampas-wilderness-regional-preserve"
        ],
        "subject_id": "park-las-trampas-wilderness-regional-preserve",
        "temporal_scope": null,
        "value": {
          "accessible_facilities_at_bollinger": [
            "disabled parking",
            "wheelchair-accessible chemical toilet",
            "drinking fountain",
            "picnic site"
          ],
          "acreage": 6050,
          "activities": [
            "biking",
            "camping",
            "hiking",
            "horseback riding",
            "picnicking"
          ],
          "address": "18012 Bollinger Canyon Road, San Ramon, CA 94583",
          "group_camp": {
            "bring_own_water": true,
            "minimum_advance_business_days": 3,
            "name": "Corral Area",
            "reservation_required": true
          },
          "seasonal_gate_hours": "08:00 opening; closing varies from 17:30 to 20:00 by published date bands",
          "trail_rules": {
            "ebmud_land_permit_required": true,
            "rocky_ridge_view_trail_bicycles": false,
            "use_only_signed_mapped_trails": true
          },
          "water": "inconsistent and may be unavailable; visitors should carry water"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-las-trampas-visitor-profile",
          "evidence_id": "evidence-ebrpd-las-trampas-visitor-profile",
          "notes": "Direct transcription and conservative structuring of planning-relevant fields from the official park page.",
          "observation_id": "observation-ebrpd-las-trampas-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-las-trampas-visitor-profile",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T07:00:00+00:00",
          "source_id": "source-ebrpd-las-trampas-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/las-trampas",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-las-trampas-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "group-camp-las-trampas-corral",
      "kind": "group_campsite",
      "name": "Las Trampas Corral Area Group Camp"
    },
    {
      "entity_id": "park-las-trampas-wilderness-regional-preserve",
      "kind": "park",
      "name": "Las Trampas Wilderness Regional Preserve"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-preserves-batch-02",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-ebrpd-las-trampas-park-page.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "source-ebrpd-las-trampas-park-page",
      "record_type": "source",
      "summary": "Add four additional previously uncaptured EBRPD preserve visitor profiles."
    }
  ],
  "navigation": {
    "next_id": "source-ebrpd-leona-canyon-park-page",
    "position": 54,
    "previous_id": "source-ebrpd-lake-chabot-park-page",
    "total": 587
  },
  "observations": [
    {
      "artifact_refs": [
        "Group Camping",
        "Hours"
      ],
      "content": "The official Las Trampas page identifies the Corral Area as a reservable overnight group camp and requires reservations at least three business days ahead. Campers must bring their own water because the park supply is inconsistent and can be unavailable. The page publishes seasonal park hours and says public Wi-Fi is unavailable.",
      "observation_id": "observation-ebrpd-las-trampas-camping-20260922",
      "observed_at": null,
      "observer": "Wayproof web source review",
      "retrieved_at": "2026-09-22T00:00:00-07:00",
      "source_id": "source-ebrpd-las-trampas-park-page"
    },
    {
      "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-las-trampas-visitor-profile",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T07:00:00+00:00",
      "source_id": "source-ebrpd-las-trampas-park-page"
    }
  ],
  "record": {
    "locator": "https://www.ebparks.org/parks/las-trampas",
    "publisher": "East Bay Regional Park District",
    "source_id": "source-ebrpd-las-trampas-park-page"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/las-trampas",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-las-trampas-park-page"
    }
  ]
}