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          },
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          "notes": "Official park guidance; current conditions require a pre-trip recheck.",
          "observation_id": "observation-ebrpd-quarry-lakes-water-rules-20260922",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [
            "Current notices",
            "To Reach The Park",
            "Park Accessibility",
            "Attractions"
          ],
          "content": "The live official park page publishes the water-body conditions, water-contact rules, recreation requirements, accessibility, access points, and closures represented by the associated claims.",
          "observation_id": "observation-ebrpd-quarry-lakes-water-rules-20260922",
          "observed_at": null,
          "observer": "Wayproof live source review",
          "retrieved_at": "2026-09-22T20:00:00+00:00",
          "source_id": "source-ebrpd-quarry-lakes-park-page"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/quarry-lakes",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-quarry-lakes-park-page"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "entrance-quarry-alameda-creek-east-walk-in",
      "kind": "entrance",
      "name": "Quarry Lakes Alameda Creek Trail Walk-In Entrance East"
    },
    {
      "entity_id": "entrance-quarry-alameda-creek-west-walk-in",
      "kind": "entrance",
      "name": "Quarry Lakes Alameda Creek Trail Walk-In Entrance West"
    },
    {
      "entity_id": "facility-quarry-ada-fishing-pier",
      "kind": "facility",
      "name": "Quarry Lakes ADA Fishing Pier"
    },
    {
      "entity_id": "facility-quarry-boat-launch",
      "kind": "facility",
      "name": "Quarry Lakes Boat Launch"
    },
    {
      "entity_id": "facility-quarry-niles-beach",
      "kind": "facility",
      "name": "Quarry Lakes Niles Beach"
    },
    {
      "entity_id": "park-quarry-lakes-regional-recreation-area",
      "kind": "park",
      "name": "Quarry Lakes Regional Recreation Area"
    },
    {
      "entity_id": "waterbody-quarry-horseshoe-lake",
      "kind": "waterbody",
      "name": "Horseshoe Lake"
    },
    {
      "entity_id": "waterbody-quarry-lago-los-osos",
      "kind": "waterbody",
      "name": "Lago Los Osos"
    },
    {
      "entity_id": "waterbody-quarry-rainbow-lake",
      "kind": "waterbody",
      "name": "Rainbow Lake"
    },
    {
      "entity_id": "waterbody-quarry-shinn-pond",
      "kind": "waterbody",
      "name": "Shinn Pond"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260921-ebrpd-parks-batch-12",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-ebrpd-quarry-lakes-park-page.json",
      "reason": "Add a deduplicated planning profile from the live EBRPD preserve page reviewed on 2026-09-20.",
      "record_id": "source-ebrpd-quarry-lakes-park-page",
      "record_type": "source",
      "summary": "Add four additional previously uncaptured EBRPD park visitor profiles."
    }
  ],
  "navigation": {
    "next_id": "source-ebrpd-radke-martinez-park-page",
    "position": 74,
    "previous_id": "source-ebrpd-point-pinole-park-page",
    "total": 587
  },
  "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-quarry-lakes-visitor-profile",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-20T07:00:00+00:00",
      "source_id": "source-ebrpd-quarry-lakes-park-page"
    },
    {
      "artifact_refs": [
        "Current notices",
        "To Reach The Park",
        "Park Accessibility",
        "Attractions"
      ],
      "content": "The live official park page publishes the water-body conditions, water-contact rules, recreation requirements, accessibility, access points, and closures represented by the associated claims.",
      "observation_id": "observation-ebrpd-quarry-lakes-water-rules-20260922",
      "observed_at": null,
      "observer": "Wayproof live source review",
      "retrieved_at": "2026-09-22T20:00:00+00:00",
      "source_id": "source-ebrpd-quarry-lakes-park-page"
    }
  ],
  "record": {
    "locator": "https://www.ebparks.org/parks/quarry-lakes",
    "publisher": "East Bay Regional Park District",
    "source_id": "source-ebrpd-quarry-lakes-park-page"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/parks/quarry-lakes",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-quarry-lakes-park-page"
    }
  ]
}