{
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    {
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          "evidence-east-bay-skyline-lake-chabot-connection"
        ],
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        "spatial_scope_ids": [],
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      },
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        {
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          ],
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      ],
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      ]
    },
    {
      "claim": {
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        ],
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        ],
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      },
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        }
      ],
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          ],
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      ],
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        {
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-entrance-lake-chabot-fairmont-drive-walk-in-access-profile",
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        ],
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        ],
        "subject_id": "entrance-lake-chabot-fairmont-drive-walk-in",
        "temporal_scope": null,
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      },
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        {
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        }
      ],
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        {
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          ],
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      ],
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-entrance-lake-chabot-lake-chabot-road-access-profile",
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        ],
        "subject_id": "entrance-lake-chabot-lake-chabot-road",
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          "access_mode": "vehicle",
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      },
      "evidence": [
        {
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      ],
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        {
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          ],
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      ],
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        {
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      ]
    },
    {
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        ],
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      },
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        {
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        }
      ],
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        {
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            "Current notices",
            "To Reach The Park",
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            "Attractions"
          ],
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          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
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      ],
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        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-entrance-lake-chabot-old-lake-chabot-road-walk-in-access-profile",
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          "evidence-entrance-lake-chabot-old-lake-chabot-road-walk-in-access-profile"
        ],
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          "scope-entrance-lake-chabot-old-lake-chabot-road-walk-in"
        ],
        "subject_id": "entrance-lake-chabot-old-lake-chabot-road-walk-in",
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      },
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        {
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
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          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
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          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
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      ],
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        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-entrance-lake-chabot-redwood-road-alta-mira-walk-in-access-profile",
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          "evidence-entrance-lake-chabot-redwood-road-alta-mira-walk-in-access-profile"
        ],
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          "scope-entrance-lake-chabot-redwood-road-alta-mira-walk-in"
        ],
        "subject_id": "entrance-lake-chabot-redwood-road-alta-mira-walk-in",
        "temporal_scope": null,
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          "access_mode": "walk-in",
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          "longitude": -122.074036341169
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      },
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        {
          "claim_id": "claim-entrance-lake-chabot-redwood-road-alta-mira-walk-in-access-profile",
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          "notes": "Official access listing and linked coordinate.",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
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          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
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          "source_id": "source-ebrpd-lake-chabot-park-page"
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      ],
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        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-bicycle-loop-profile",
        "evidence_ids": [
          "evidence-lake-chabot-bicycle-loop-profile"
        ],
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        "spatial_scope_ids": [],
        "subject_id": "route-lake-chabot-bicycle-loop",
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          "distance_miles_via_live_oak": 12.42
        }
      },
      "evidence": [
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          "evidence_id": "evidence-lake-chabot-bicycle-loop-profile",
          "notes": "Official park route guidance.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-blue-green-algae-caution-20260922",
        "evidence_ids": [
          "evidence-lake-chabot-blue-green-algae-caution-20260922"
        ],
        "predicate": "water_quality_status",
        "spatial_scope_ids": [
          "scope-lake-chabot-regional-park"
        ],
        "subject_id": "park-lake-chabot-regional-park",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2026-09-22"
        },
        "value": {
          "hazard": "blue-green algae",
          "status": "caution_advisory",
          "swimming": "never permitted"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lake-chabot-blue-green-algae-caution-20260922",
          "evidence_id": "evidence-lake-chabot-blue-green-algae-caution-20260922",
          "notes": "Official park guidance; time-sensitive statuses require a pre-trip recheck.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
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            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
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          "source_id": "source-ebrpd-lake-chabot-park-page"
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      ],
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        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
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      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-fishing-rules",
        "evidence_ids": [
          "evidence-lake-chabot-fishing-rules"
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          "scope-lake-chabot-regional-park"
        ],
        "subject_id": "park-lake-chabot-regional-park",
        "temporal_scope": null,
        "value": {
          "california_fishing_license_required": true,
          "district_daily_fishing_permit_required": true,
          "fish_cleaning_location": "designated cleaning station near parking lot",
          "live_fish_bait_allowed": false,
          "minimum_age_for_license_and_district_permit": 16
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lake-chabot-fishing-rules",
          "evidence_id": "evidence-lake-chabot-fishing-rules",
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      ],
      "observations": [
        {
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            "Current notices",
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          ],
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          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
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          "source_id": "source-ebrpd-lake-chabot-park-page"
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      ],
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        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-marina-accessible-water-sanitation",
        "evidence_ids": [
          "evidence-lake-chabot-marina-accessible-water-sanitation"
        ],
        "predicate": "facility_profile",
        "spatial_scope_ids": [
          "scope-lake-chabot-regional-park"
        ],
        "subject_id": "park-lake-chabot-regional-park",
        "temporal_scope": null,
        "value": {
          "drinking_fountains": true,
          "location": "marina area",
          "picnic_tables": true,
          "restrooms": true,
          "wheelchair_accessible": true,
          "wheelchair_ramp_from_parking": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lake-chabot-marina-accessible-water-sanitation",
          "evidence_id": "evidence-lake-chabot-marina-accessible-water-sanitation",
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          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
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        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
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            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
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          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
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      ],
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        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-visitor-profile",
        "evidence_ids": [
          "evidence-ebrpd-lake-chabot-visitor-profile"
        ],
        "predicate": "visitor_profile",
        "spatial_scope_ids": [
          "scope-lake-chabot-regional-park"
        ],
        "subject_id": "park-lake-chabot-regional-park",
        "temporal_scope": null,
        "value": {
          "access": "Lake Chabot Road marina entrance",
          "accessible_facilities": [
            "fishing pier",
            "parking-to-marina wheelchair ramp",
            "restrooms",
            "drinking fountains",
            "picnic tables"
          ],
          "activities": [
            "biking",
            "boating",
            "dogs",
            "fishing",
            "golfing",
            "hiking",
            "horseback riding",
            "kid-friendly",
            "picnicking"
          ],
          "address": "17600 Lake Chabot Road, Castro Valley, CA 94546",
          "bus_fee_usd": 25,
          "daily_fishing_access_fee_usd": 5,
          "hours": "05:00–22:00 unless otherwise posted or permitted",
          "lake_acres": 315,
          "mussel_inspection_fee_usd": 5,
          "non_motorized_launch_fee_usd": 3,
          "parking_fee_usd": 5,
          "seasonal_gate_hours": "06:00 opening; closing varies from 18:00 to 21:00 by month",
          "trailered_vehicle_fee_usd": 5,
          "trails": {
            "adjoining_anthony_chabot_trail_miles": 70,
            "bicycle_loop_miles": {
              "via_honker_bay": 14.41,
              "via_live_oak": 12.42
            },
            "park_trail_miles_over": 20,
            "paved_shore_trails_miles": 3.52
          },
          "water_use": {
            "boating": "controlled non-water-contact use",
            "reason": "standby emergency water supply",
            "swimming_permitted": false
          }
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lake-chabot-visitor-profile",
          "evidence_id": "evidence-ebrpd-lake-chabot-visitor-profile",
          "notes": "Direct transcription and conservative structuring of planning-relevant fields from the official park page.",
          "observation_id": "observation-ebrpd-lake-chabot-visitor-profile",
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        }
      ],
      "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-lake-chabot-visitor-profile",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-20T07:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-water-contact-rules",
        "evidence_ids": [
          "evidence-lake-chabot-water-contact-rules"
        ],
        "predicate": "recreation_rule",
        "spatial_scope_ids": [
          "scope-lake-chabot-regional-park"
        ],
        "subject_id": "park-lake-chabot-regional-park",
        "temporal_scope": null,
        "value": {
          "float_tube_body_contact_prevention_required": true,
          "reason": "standby emergency water supply",
          "swimming_permitted": false
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lake-chabot-water-contact-rules",
          "evidence_id": "evidence-lake-chabot-water-contact-rules",
          "notes": "Official park guidance; time-sensitive statuses require a pre-trip recheck.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-lake-chabot-west-east-shore-profile",
        "evidence_ids": [
          "evidence-lake-chabot-west-east-shore-profile"
        ],
        "predicate": "route_profile",
        "spatial_scope_ids": [],
        "subject_id": "route-lake-chabot-west-east-shore",
        "temporal_scope": null,
        "value": {
          "distance_miles": 3.52,
          "equestrians_allowed": false,
          "surface": "paved"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-lake-chabot-west-east-shore-profile",
          "evidence_id": "evidence-lake-chabot-west-east-shore-profile",
          "notes": "Official park route guidance.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-staging-lake-chabot-chabot-ebmud-access-profile",
        "evidence_ids": [
          "evidence-staging-lake-chabot-chabot-ebmud-access-profile"
        ],
        "predicate": "access_profile",
        "spatial_scope_ids": [
          "scope-staging-lake-chabot-chabot-ebmud"
        ],
        "subject_id": "staging-lake-chabot-chabot-ebmud",
        "temporal_scope": null,
        "value": {
          "access_mode": "vehicle",
          "latitude": 37.7378051345929,
          "longitude": -122.075673983239
        }
      },
      "evidence": [
        {
          "claim_id": "claim-staging-lake-chabot-chabot-ebmud-access-profile",
          "evidence_id": "evidence-staging-lake-chabot-chabot-ebmud-access-profile",
          "notes": "Official access listing and linked coordinate.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-staging-lake-chabot-fairmont-ridge-access-profile",
        "evidence_ids": [
          "evidence-staging-lake-chabot-fairmont-ridge-access-profile"
        ],
        "predicate": "access_profile",
        "spatial_scope_ids": [
          "scope-staging-lake-chabot-fairmont-ridge"
        ],
        "subject_id": "staging-lake-chabot-fairmont-ridge",
        "temporal_scope": null,
        "value": {
          "access_mode": "vehicle",
          "latitude": 37.7133377475833,
          "longitude": -122.108603885343
        }
      },
      "evidence": [
        {
          "claim_id": "claim-staging-lake-chabot-fairmont-ridge-access-profile",
          "evidence_id": "evidence-staging-lake-chabot-fairmont-ridge-access-profile",
          "notes": "Official access listing and linked coordinate.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-staging-lake-chabot-proctor-access-profile",
        "evidence_ids": [
          "evidence-staging-lake-chabot-proctor-access-profile"
        ],
        "predicate": "access_profile",
        "spatial_scope_ids": [
          "scope-staging-lake-chabot-proctor"
        ],
        "subject_id": "staging-lake-chabot-proctor",
        "temporal_scope": null,
        "value": {
          "access_mode": "vehicle",
          "latitude": 37.7214829153842,
          "longitude": -122.076594767603
        }
      },
      "evidence": [
        {
          "claim_id": "claim-staging-lake-chabot-proctor-access-profile",
          "evidence_id": "evidence-staging-lake-chabot-proctor-access-profile",
          "notes": "Official access listing and linked coordinate.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-staging-lake-chabot-redwood-canyon-golf-course-access-profile",
        "evidence_ids": [
          "evidence-staging-lake-chabot-redwood-canyon-golf-course-access-profile"
        ],
        "predicate": "access_profile",
        "spatial_scope_ids": [
          "scope-staging-lake-chabot-redwood-canyon-golf-course"
        ],
        "subject_id": "staging-lake-chabot-redwood-canyon-golf-course",
        "temporal_scope": null,
        "value": {
          "access_mode": "vehicle",
          "latitude": 37.7260193375457,
          "longitude": -122.081155538761
        }
      },
      "evidence": [
        {
          "claim_id": "claim-staging-lake-chabot-redwood-canyon-golf-course-access-profile",
          "evidence_id": "evidence-staging-lake-chabot-redwood-canyon-golf-course-access-profile",
          "notes": "Official access listing and linked coordinate.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
          "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T17:00:00+00:00",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/lake-chabot",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-lake-chabot-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "entrance-lake-chabot-crest-avenue-walk-in",
      "kind": "entrance",
      "name": "Crest Avenue Walk-In Entrance near Irma Way"
    },
    {
      "entity_id": "entrance-lake-chabot-fairmont-drive-walk-in",
      "kind": "entrance",
      "name": "Fairmont Drive Walk-In Entrance"
    },
    {
      "entity_id": "entrance-lake-chabot-lake-chabot-road",
      "kind": "entrance",
      "name": "Lake Chabot Road Park Entrance"
    },
    {
      "entity_id": "entrance-lake-chabot-lake-chabot-road-walk-in",
      "kind": "entrance",
      "name": "Lake Chabot Road Walk-In Entrance"
    },
    {
      "entity_id": "entrance-lake-chabot-old-lake-chabot-road-walk-in",
      "kind": "entrance",
      "name": "Old Lake Chabot Road Walk-In Entrance"
    },
    {
      "entity_id": "entrance-lake-chabot-redwood-road-alta-mira-walk-in",
      "kind": "entrance",
      "name": "Redwood Road Walk-In Entrance at Alta Mira"
    },
    {
      "entity_id": "park-lake-chabot-regional-park",
      "kind": "park",
      "name": "Lake Chabot Regional Park"
    },
    {
      "entity_id": "route-east-bay-skyline-national-recreation-trail",
      "kind": "route",
      "name": "East Bay Skyline National Recreation Trail"
    },
    {
      "entity_id": "route-lake-chabot-bicycle-loop",
      "kind": "route",
      "name": "Lake Chabot Bicycle Loop"
    },
    {
      "entity_id": "route-lake-chabot-west-east-shore",
      "kind": "route",
      "name": "Lake Chabot West Shore and East Shore Trails"
    },
    {
      "entity_id": "staging-lake-chabot-chabot-ebmud",
      "kind": "staging_area",
      "name": "Chabot Staging Area (EBMUD)"
    },
    {
      "entity_id": "staging-lake-chabot-fairmont-ridge",
      "kind": "staging_area",
      "name": "Fairmont Ridge Staging Area"
    },
    {
      "entity_id": "staging-lake-chabot-proctor",
      "kind": "staging_area",
      "name": "Proctor Staging Area"
    },
    {
      "entity_id": "staging-lake-chabot-redwood-canyon-golf-course",
      "kind": "staging_area",
      "name": "Redwood Canyon Public Golf Course Access"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-parks-batch-09",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-ebrpd-lake-chabot-park-page.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "source-ebrpd-lake-chabot-park-page",
      "record_type": "source",
      "summary": "Add four additional previously uncaptured EBRPD park visitor profiles."
    }
  ],
  "navigation": {
    "next_id": "source-ebrpd-las-trampas-park-page",
    "position": 53,
    "previous_id": "source-ebrpd-kennedy-grove-park-page",
    "total": 587
  },
  "observations": [
    {
      "artifact_refs": [
        "Current notices",
        "To Reach The Park",
        "Park Accessibility",
        "Attractions"
      ],
      "content": "The live official park page publishes named access points with linked coordinates, route guidance, facilities, recreation rules, and current conditions.",
      "observation_id": "observation-ebrpd-lake-chabot-access-rules-20260922",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-22T17:00:00+00:00",
      "source_id": "source-ebrpd-lake-chabot-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-lake-chabot-visitor-profile",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T07:00:00+00:00",
      "source_id": "source-ebrpd-lake-chabot-park-page"
    }
  ],
  "record": {
    "locator": "https://www.ebparks.org/parks/lake-chabot",
    "publisher": "East Bay Regional Park District",
    "source_id": "source-ebrpd-lake-chabot-park-page"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/lake-chabot",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-lake-chabot-park-page"
    }
  ]
}