{
  "claims": [
    {
      "claim": {
        "claim_id": "claim-del-valle-boat-inspection",
        "evidence_ids": [
          "evidence-del-valle-boat-inspection",
          "evidence-del-valle-ebrpd-boat-inspection",
          "evidence-ebrpd-mussels-del-valle-inspection"
        ],
        "predicate": "boat_inspection_required",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": null,
        "value": true
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-boat-inspection",
          "evidence_id": "evidence-del-valle-boat-inspection",
          "notes": "",
          "observation_id": "observation-del-valle-boating-swimming",
          "stance": "supports"
        },
        {
          "claim_id": "claim-del-valle-boat-inspection",
          "evidence_id": "evidence-del-valle-ebrpd-boat-inspection",
          "notes": "",
          "observation_id": "observation-del-valle-ebrpd-golden-mussel",
          "stance": "supports"
        },
        {
          "claim_id": "claim-del-valle-boat-inspection",
          "evidence_id": "evidence-ebrpd-mussels-del-valle-inspection",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-program-scope",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The page lists two swimming beaches, lifeguards during posted periods, boat rentals, and a public launch for boats of any size; it warns that boaters must comply with the Invasive Mussel Prevention Program and mandatory inspections.",
          "observation_id": "observation-del-valle-boating-swimming",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-reserveamerica-del-valle-overview-110003"
        },
        {
          "artifact_refs": [],
          "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.",
          "observation_id": "observation-del-valle-ebrpd-golden-mussel",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "artifact_refs": [],
          "content": "EBRPD requires watercraft inspection at Contra Loma, Del Valle, Lake Chabot, Quarry Lakes, and Shadow Cliffs. Covered craft include boats, kayaks, canoes, sailboats, inflatable craft, and every form of floating board. Campers with watercraft must complete inspection before campground check-in.",
          "observation_id": "observation-ebrpd-mussels-program-scope",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.reserveamerica.com/explore/del-valle/EB/110003/overview",
          "publisher": "ReserveAmerica / East Bay Regional Park District",
          "source_id": "source-reserveamerica-del-valle-overview-110003"
        },
        {
          "locator": "https://www.ebparks.org/parks/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-del-valle-ebrpd-clean-drain-dry",
        "evidence_ids": [
          "evidence-del-valle-ebrpd-clean-drain-dry",
          "evidence-ebrpd-mussels-clean-drain-dry"
        ],
        "predicate": "watercraft_preparation",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": {
          "ends_on": "2026-09-20",
          "starts_on": "2026-09-20"
        },
        "value": [
          "clean",
          "drain",
          "dry"
        ]
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-ebrpd-clean-drain-dry",
          "evidence_id": "evidence-del-valle-ebrpd-clean-drain-dry",
          "notes": "",
          "observation_id": "observation-del-valle-ebrpd-golden-mussel",
          "stance": "supports"
        },
        {
          "claim_id": "claim-del-valle-ebrpd-clean-drain-dry",
          "evidence_id": "evidence-ebrpd-mussels-clean-drain-dry",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-contra-loma",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.",
          "observation_id": "observation-del-valle-ebrpd-golden-mussel",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "artifact_refs": [],
          "content": "The current notice reports golden mussels at Contra Loma and states that a boat launched there is quarantined for 30 days from inspected lakes including Del Valle. All vessels should be cleaned, drained, and dried, and bands are honored only at their issuing lake.",
          "observation_id": "observation-ebrpd-mussels-contra-loma",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine",
        "evidence_ids": [
          "evidence-del-valle-ebrpd-contra-loma-quarantine",
          "evidence-ebrpd-mussels-contra-loma-quarantine"
        ],
        "predicate": "cross_lake_boat_quarantine",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "lake-del-valle",
        "temporal_scope": {
          "ends_on": "2026-09-20",
          "starts_on": "2026-09-20"
        },
        "value": {
          "duration_days": 30,
          "restricted_destination": "Lake Del Valle",
          "trigger_lake": "Contra Loma Reservoir"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine",
          "evidence_id": "evidence-del-valle-ebrpd-contra-loma-quarantine",
          "notes": "",
          "observation_id": "observation-del-valle-ebrpd-golden-mussel",
          "stance": "supports"
        },
        {
          "claim_id": "claim-del-valle-ebrpd-contra-loma-quarantine",
          "evidence_id": "evidence-ebrpd-mussels-contra-loma-quarantine",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-contra-loma",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "At retrieval, the page stated that a boat launched at Contra Loma would be quarantined for 30 days from inspected lakes including Del Valle; vessels must be cleaned, drained, and dried, and boat bands are honored only by the lake that issued them. It also requires campground guests with watercraft to complete inspection before campground check-in.",
          "observation_id": "observation-del-valle-ebrpd-golden-mussel",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "artifact_refs": [],
          "content": "The current notice reports golden mussels at Contra Loma and states that a boat launched there is quarantined for 30 days from inspected lakes including Del Valle. All vessels should be cleaned, drained, and dried, and bands are honored only at their issuing lake.",
          "observation_id": "observation-ebrpd-mussels-contra-loma",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/parks/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-park-page"
        },
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-clean-dry-pass",
        "evidence_ids": [
          "evidence-ebrpd-mussels-clean-dry-pass"
        ],
        "predicate": "inspection_pass_condition",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": null,
        "value": {
          "clean_required": true,
          "components": [
            "motor",
            "motor_cooling_system",
            "deck",
            "hull",
            "bilge",
            "bait_wells",
            "ropes",
            "lines",
            "floats",
            "fishing_equipment",
            "trailer",
            "rear_of_vehicle",
            "personal_flotation_devices",
            "inflatable_craft",
            "gear"
          ],
          "dry_required": true,
          "live_bait_exception": [
            "worms",
            "nightcrawlers"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-clean-dry-pass",
          "evidence_id": "evidence-ebrpd-mussels-clean-dry-pass",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-clean-dry-pass",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Passing requires the vessel, motor and cooling system, deck, hull, bilge, bait wells, ropes, floats, fishing equipment, trailer, rear of vehicle, flotation devices, and other gear to be clean and dry. Wet motors, gear, or equipment are denied. Live bait is prohibited except worms and nightcrawlers.",
          "observation_id": "observation-ebrpd-mussels-clean-dry-pass",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-history-survey",
        "evidence_ids": [
          "evidence-ebrpd-mussels-history-survey"
        ],
        "predicate": "prior_waterbody_screening",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": {
          "ends_on": "2026-09-20",
          "starts_on": "2026-09-20"
        },
        "value": {
          "list_is_growing": true,
          "lookback_days": 30,
          "published_flagged_waters": [
            "Contra Loma Reservoir",
            "Sacramento-San Joaquin Delta",
            "San Luis Reservoir",
            "Bethany Reservoir",
            "San Justo Reservoir",
            "Lake Mead",
            "Lake Havasu",
            "San Benito County waters",
            "California south of Tehachapi Mountains",
            "waters outside California"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-history-survey",
          "evidence_id": "evidence-ebrpd-mussels-history-survey",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-history-survey",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Inspection includes a 30-day vessel-history survey and hands-on visual check. The survey flags use in an infested water body, including Contra Loma, the Delta, San Luis, Bethany, San Justo, Lakes Mead and Havasu, San Benito County, California south of the Tehachapis, and waters outside California; the page warns that this list is growing.",
          "observation_id": "observation-ebrpd-mussels-history-survey",
          "observed_at": "2026-09-20T00:00:00+00:00",
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-inspection-fees",
        "evidence_ids": [
          "evidence-ebrpd-mussels-inspection-fees"
        ],
        "predicate": "inspection_fees",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": null,
        "value": {
          "motorized_usd": 10,
          "non_motorized_receipt_valid_days": 30,
          "non_motorized_reinspection_each_entry": true,
          "non_motorized_usd": 5,
          "refundable": false
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-inspection-fees",
          "evidence_id": "evidence-ebrpd-mussels-inspection-fees",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-registration-fees",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Motorized craft require current registration. Inspection fees are non-refundable: $10 motorized and $5 non-motorized. A motorized fee may be waived on a later same-lake banded visit; the non-motorized receipt is valid 30 days although inspection is required on every entry.",
          "observation_id": "observation-ebrpd-mussels-registration-fees",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-inspection-scope",
        "evidence_ids": [
          "evidence-ebrpd-mussels-inspection-scope"
        ],
        "predicate": "inspection_scope",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": null,
        "value": {
          "campground_checkin_order": "inspection_before_checkin",
          "equipment": [
            "boat",
            "kayak",
            "canoe",
            "sailboat",
            "inflatable_craft",
            "floating_board"
          ],
          "locations": [
            "Contra Loma Regional Park",
            "Del Valle Regional Park",
            "Lake Chabot Regional Park",
            "Quarry Lakes Regional Recreation Area",
            "Shadow Cliffs Regional Recreation Area"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-inspection-scope",
          "evidence_id": "evidence-ebrpd-mussels-inspection-scope",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-program-scope",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "EBRPD requires watercraft inspection at Contra Loma, Del Valle, Lake Chabot, Quarry Lakes, and Shadow Cliffs. Covered craft include boats, kayaks, canoes, sailboats, inflatable craft, and every form of floating board. Campers with watercraft must complete inspection before campground check-in.",
          "observation_id": "observation-ebrpd-mussels-program-scope",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-lake-specific-bands",
        "evidence_ids": [
          "evidence-ebrpd-mussels-lake-specific-bands"
        ],
        "predicate": "banding_program",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": {
          "ends_on": null,
          "starts_on": "2025-05-07"
        },
        "value": {
          "decontamination_certificate_substitutes": false,
          "inspection_form_required": true,
          "intact_band_required": true,
          "lake_specific": true,
          "launch_and_entry_fees_still_apply": true,
          "other_lake_band_requires_full_inspection": true,
          "same_lake_abbreviated_inspection": true,
          "same_lake_inspection_fee_waived": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-lake-specific-bands",
          "evidence_id": "evidence-ebrpd-mussels-lake-specific-bands",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-banding",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Effective May 7, 2025, bands are color-coded and lake-specific. An intact band from the same lake plus the inspection form permits abbreviated inspection and waives another inspection fee; launch and entry fees remain. Other-lake bands require full inspection and fee. Decontamination certificates do not replace inspection. Non-motorized craft are inspected every entry.",
          "observation_id": "observation-ebrpd-mussels-banding",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-motorized-failure",
        "evidence_ids": [
          "evidence-ebrpd-mussels-motorized-failure"
        ],
        "predicate": "failed_inspection_outcome",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": null,
        "value": {
          "entry_fee_refunded_if_exit": true,
          "inspection_fee_refunded": false,
          "launch_allowed": false,
          "launch_fee_refunded": true,
          "motorized_quarantine_days": 5,
          "new_inspection_fee_on_return": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-motorized-failure",
          "evidence_id": "evidence-ebrpd-mussels-motorized-failure",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-failed-inspection",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "A failed watercraft may not launch. The page states a five-day wait before returning and specifically applies a five-day quarantine to failed motorized craft; it says failed non-motorized craft are subject to 'the quarantine period' without stating its duration. Launch fees are refunded, entry fees are refunded if the visitor exits, and inspection fees are not refunded.",
          "observation_id": "observation-ebrpd-mussels-failed-inspection",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-motorized-registration",
        "evidence_ids": [
          "evidence-ebrpd-mussels-motorized-registration"
        ],
        "predicate": "motorized_registration_required",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": null,
        "value": true
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-motorized-registration",
          "evidence_id": "evidence-ebrpd-mussels-motorized-registration",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-registration-fees",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Motorized craft require current registration. Inspection fees are non-refundable: $10 motorized and $5 non-motorized. A motorized fee may be waived on a later same-lake banded visit; the non-motorized receipt is valid 30 days although inspection is required on every entry.",
          "observation_id": "observation-ebrpd-mussels-registration-fees",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-mussels-wet-weather",
        "evidence_ids": [
          "evidence-ebrpd-mussels-wet-weather"
        ],
        "predicate": "wet_weather_protocol",
        "spatial_scope_ids": [
          "scope-ebrpd-inspected-lakes"
        ],
        "subject_id": "program-ebrpd-invasive-mussel",
        "temporal_scope": null,
        "value": {
          "banded_watercraft_permitted": true,
          "closure_reasons": [
            "serious_injury_risk",
            "waterbody_closed_to_launching"
          ],
          "dirty_water_fails": true,
          "motor_internal_water_fails": true,
          "sealed_compartment_water_fails": true,
          "standing_water_quarantine_adjustable": true,
          "stations_normally_open": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-mussels-wet-weather",
          "evidence_id": "evidence-ebrpd-mussels-wet-weather",
          "notes": "",
          "observation_id": "observation-ebrpd-mussels-wet-weather",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Inspection stations remain open in rain unless weather creates serious injury risk or the water agency closes launching. Rainwater may be distinguished from suspect water, but water in motors, sealed compartments, unexposed wet gear, or dirty vessel water fails inspection. Intact banded craft may launch in rain. Standing-water quarantine may be adjusted using the 100th Meridian calculator.",
          "observation_id": "observation-ebrpd-mussels-wet-weather",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-invasive-mussel-program"
        }
      ]
    }
  ],
  "entities": [
    {
      "entity_id": "lake-del-valle",
      "kind": "lake",
      "name": "Lake Del Valle"
    },
    {
      "entity_id": "program-ebrpd-invasive-mussel",
      "kind": "inspection_program",
      "name": "EBRPD Invasive Mussel Program"
    }
  ],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260920-ebrpd-invasive-mussel-program",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/sources/source-ebrpd-invasive-mussel-program.json",
      "reason": "Add EBRPD invasive-mussel inspection evidence and equipment-context rules.",
      "record_id": "source-ebrpd-invasive-mussel-program",
      "record_type": "source",
      "summary": "Add the EBRPD invasive-mussel program as the equipment and prior-waterbody fixture, including inspection, failure, banding, fee, and wet-weather semantics."
    }
  ],
  "navigation": {
    "next_id": "source-ebrpd-judge-john-sutter-park-page",
    "position": 50,
    "previous_id": "source-ebrpd-huckleberry-park-page",
    "total": 587
  },
  "observations": [
    {
      "artifact_refs": [],
      "content": "Effective May 7, 2025, bands are color-coded and lake-specific. An intact band from the same lake plus the inspection form permits abbreviated inspection and waives another inspection fee; launch and entry fees remain. Other-lake bands require full inspection and fee. Decontamination certificates do not replace inspection. Non-motorized craft are inspected every entry.",
      "observation_id": "observation-ebrpd-mussels-banding",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "Passing requires the vessel, motor and cooling system, deck, hull, bilge, bait wells, ropes, floats, fishing equipment, trailer, rear of vehicle, flotation devices, and other gear to be clean and dry. Wet motors, gear, or equipment are denied. Live bait is prohibited except worms and nightcrawlers.",
      "observation_id": "observation-ebrpd-mussels-clean-dry-pass",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "The current notice reports golden mussels at Contra Loma and states that a boat launched there is quarantined for 30 days from inspected lakes including Del Valle. All vessels should be cleaned, drained, and dried, and bands are honored only at their issuing lake.",
      "observation_id": "observation-ebrpd-mussels-contra-loma",
      "observed_at": "2026-09-20T00:00:00+00:00",
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "A failed watercraft may not launch. The page states a five-day wait before returning and specifically applies a five-day quarantine to failed motorized craft; it says failed non-motorized craft are subject to 'the quarantine period' without stating its duration. Launch fees are refunded, entry fees are refunded if the visitor exits, and inspection fees are not refunded.",
      "observation_id": "observation-ebrpd-mussels-failed-inspection",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "Inspection includes a 30-day vessel-history survey and hands-on visual check. The survey flags use in an infested water body, including Contra Loma, the Delta, San Luis, Bethany, San Justo, Lakes Mead and Havasu, San Benito County, California south of the Tehachapis, and waters outside California; the page warns that this list is growing.",
      "observation_id": "observation-ebrpd-mussels-history-survey",
      "observed_at": "2026-09-20T00:00:00+00:00",
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "EBRPD requires watercraft inspection at Contra Loma, Del Valle, Lake Chabot, Quarry Lakes, and Shadow Cliffs. Covered craft include boats, kayaks, canoes, sailboats, inflatable craft, and every form of floating board. Campers with watercraft must complete inspection before campground check-in.",
      "observation_id": "observation-ebrpd-mussels-program-scope",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "Motorized craft require current registration. Inspection fees are non-refundable: $10 motorized and $5 non-motorized. A motorized fee may be waived on a later same-lake banded visit; the non-motorized receipt is valid 30 days although inspection is required on every entry.",
      "observation_id": "observation-ebrpd-mussels-registration-fees",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    },
    {
      "artifact_refs": [],
      "content": "Inspection stations remain open in rain unless weather creates serious injury risk or the water agency closes launching. Rainwater may be distinguished from suspect water, but water in motors, sealed compartments, unexposed wet gear, or dirty vessel water fails inspection. Intact banded craft may launch in rain. Standing-water quarantine may be adjusted using the 100th Meridian calculator.",
      "observation_id": "observation-ebrpd-mussels-wet-weather",
      "observed_at": null,
      "observer": "user-supplied page transcription",
      "retrieved_at": "2026-09-20T00:00:00+00:00",
      "source_id": "source-ebrpd-invasive-mussel-program"
    }
  ],
  "record": {
    "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
    "publisher": "East Bay Regional Park District",
    "source_id": "source-ebrpd-invasive-mussel-program"
  },
  "record_type": "source",
  "related_records": [],
  "sources": [
    {
      "locator": "https://www.ebparks.org/recreation/boating/invasive-mussels",
      "publisher": "East Bay Regional Park District",
      "source_id": "source-ebrpd-invasive-mussel-program"
    }
  ]
}