{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-ebrpd-algae-advisory-fish-guidance",
        "evidence_ids": [
          "evidence-ebrpd-algae-advisory-fish-guidance"
        ],
        "predicate": "advisory_fish_guidance",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": {
          "avoid_unnecessary_water_contact": true,
          "cook_thoroughly": true,
          "discard_guts_and_liver": true,
          "wash_fillet_with_safe_water": true,
          "wash_hands_after_wet_contact": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-algae-advisory-fish-guidance",
          "evidence_id": "evidence-ebrpd-algae-advisory-fish-guidance",
          "notes": "",
          "observation_id": "observation-ebrpd-algae-fish-guidance",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "During an algae advisory, EBRPD advises avoiding unnecessary water contact and washing hands after handling fish or wet equipment. Fish fillets should be washed with tap or bottled water, guts and liver discarded, and fish cooked thoroughly. Reservoir fish are tested annually; at retrieval the page reported no microcystin detected to date in fish flesh from District-managed waters.",
          "observation_id": "observation-ebrpd-algae-fish-guidance",
          "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-blue-green-algae"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-water-quality-traffic-light",
        "evidence_ids": [
          "evidence-ebrpd-water-quality-traffic-light"
        ],
        "predicate": "bacterial_stoplight_meanings",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": {
          "green": "indicator_results_below_maximums_meet_state_standards",
          "indicators": [
            "total_coliform",
            "fecal_coliform",
            "Enterococcus",
            "E_coli"
          ],
          "red": "beach_closed_for_water_quality_issue",
          "yellow": "one_or_more_indicators_exceed_daily_maximum"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-water-quality-traffic-light",
          "evidence_id": "evidence-ebrpd-water-quality-traffic-light",
          "notes": "",
          "observation_id": "observation-ebrpd-water-quality-traffic-light",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "California swim-water evaluation uses total coliform, fecal coliform, Enterococcus, and E. coli indicators. Green means results are below maximums and meet state standards; yellow means one or more indicators exceeds a daily maximum; red means the beach is closed for a water-quality issue and visitors must not enter.",
          "observation_id": "observation-ebrpd-water-quality-traffic-light",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-algae-bloom-conditions",
        "evidence_ids": [
          "evidence-ebrpd-algae-bloom-conditions"
        ],
        "predicate": "bloom_conditions",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": [
          "low_water",
          "limited_circulation",
          "increased_temperature",
          "increased_light",
          "low_oxygen",
          "high_phosphorus"
        ]
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-algae-bloom-conditions",
          "evidence_id": "evidence-ebrpd-algae-bloom-conditions",
          "notes": "",
          "observation_id": "observation-ebrpd-algae-bloom-context",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Blue-green algae are cyanobacteria. Low water, limited circulation, increased temperature and light, low oxygen, and high phosphorus can favor blooms and potential toxin release; toxin production remains incompletely understood.",
          "observation_id": "observation-ebrpd-algae-bloom-context",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-swimming-del-valle-monitoring",
        "evidence_ids": [
          "evidence-ebrpd-swimming-del-valle-monitoring",
          "evidence-ebrpd-water-quality-del-valle-monitoring"
        ],
        "predicate": "del_valle_beach_monitoring",
        "spatial_scope_ids": [
          "scope-lake-del-valle"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": {
          "april_october": "weekly",
          "november_march": "twice_monthly",
          "sample_sites_per_beach": 2,
          "sign_inputs": [
            "bacteria",
            "blue_green_algae"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-swimming-del-valle-monitoring",
          "evidence_id": "evidence-ebrpd-swimming-del-valle-monitoring",
          "notes": "",
          "observation_id": "observation-ebrpd-swimming-monitoring",
          "stance": "supports"
        },
        {
          "claim_id": "claim-ebrpd-swimming-del-valle-monitoring",
          "evidence_id": "evidence-ebrpd-water-quality-del-valle-monitoring",
          "notes": "",
          "observation_id": "observation-ebrpd-water-quality-program",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Del Valle beaches are sampled for bacteria weekly April-October and twice monthly November-March, with two sample sites per beach. Posted stop-light signs combine latest bacteriological tests and blue-green algae conditions.",
          "observation_id": "observation-ebrpd-swimming-monitoring",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-del-valle-swimming"
        },
        {
          "artifact_refs": [],
          "content": "EBRPD routinely monitors recreational and drinking water, storm water, wastewater, lakes and creeks, and responds to sewage, oil, and hazardous-material incidents. Natural swim areas are sampled weekly April-October in collaboration with county environmental-health departments, with current data posted for safe recreation choices.",
          "observation_id": "observation-ebrpd-water-quality-program",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/swimming/del-valle",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-del-valle-swimming"
        },
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-algae-dog-exposure",
        "evidence_ids": [
          "evidence-ebrpd-algae-dog-exposure"
        ],
        "predicate": "dog_exposure_risk",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": {
          "high_susceptibility": true,
          "routes": [
            "drinking",
            "swimming",
            "wading",
            "grooming_fur_or_paws",
            "eating_dried_shoreline_algae"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-algae-dog-exposure",
          "evidence_id": "evidence-ebrpd-algae-dog-exposure",
          "notes": "",
          "observation_id": "observation-ebrpd-algae-health-risk",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Exposure to toxic algae by ingestion, inhalation, or skin contact can cause rashes, eye or skin irritation, allergic reactions, breathing difficulty or congestion, gastrointestinal illness, and in high exposures serious illness or death. Dogs face special risk from drinking, swimming, wading, grooming contaminated fur or paws, or eating dried shoreline algae.",
          "observation_id": "observation-ebrpd-algae-health-risk",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-algae-human-exposure",
        "evidence_ids": [
          "evidence-ebrpd-algae-human-exposure"
        ],
        "predicate": "human_exposure_risk",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": {
          "effects": [
            "rash",
            "skin_eye_irritation",
            "allergic_reaction",
            "breathing_difficulty",
            "congestion",
            "gastrointestinal_illness",
            "serious_illness",
            "death"
          ],
          "routes": [
            "ingestion",
            "inhalation",
            "skin_contact"
          ]
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-algae-human-exposure",
          "evidence_id": "evidence-ebrpd-algae-human-exposure",
          "notes": "",
          "observation_id": "observation-ebrpd-algae-health-risk",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "Exposure to toxic algae by ingestion, inhalation, or skin contact can cause rashes, eye or skin irritation, allergic reactions, breathing difficulty or congestion, gastrointestinal illness, and in high exposures serious illness or death. Dogs face special risk from drinking, swimming, wading, grooming contaminated fur or paws, or eating dried shoreline algae.",
          "observation_id": "observation-ebrpd-algae-health-risk",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-algae-monitoring",
        "evidence_ids": [
          "evidence-ebrpd-algae-monitoring"
        ],
        "predicate": "monitoring_practice",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": {
          "lakes_and_shorelines": "regular",
          "posts_warnings_and_closures": true
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-algae-monitoring",
          "evidence_id": "evidence-ebrpd-algae-monitoring",
          "notes": "",
          "observation_id": "observation-ebrpd-algae-monitoring",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "EBRPD reports regular lake and shoreline monitoring with warnings and closures posted when appropriate. Drinking water from the Del Valle treatment plant is regularly tested for effects from reservoir blooms.",
          "observation_id": "observation-ebrpd-algae-monitoring",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-swimming-registration-applicability",
        "evidence_ids": [
          "evidence-ebrpd-swimming-registration-applicability"
        ],
        "predicate": "optional_swim_registration",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "org-east-bay-regional-park-district",
        "temporal_scope": null,
        "value": {
          "named_facilities": [
            "Castle Rock/Diablo Foothills",
            "Cull Canyon",
            "Don Castro"
          ],
          "pass_hours": [
            "11:00",
            "18:00"
          ],
          "people_per_registration": 5,
          "price_usd": 6,
          "refundable": false,
          "transferable": false,
          "water_exit": "17:30"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-swimming-registration-applicability",
          "evidence_id": "evidence-ebrpd-swimming-registration-applicability",
          "notes": "",
          "observation_id": "observation-ebrpd-swimming-district-registration",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "EBRPD describes six lakefront beaches, two chlorinated lagoons, two pools, and two bay beaches. Walk-ins at open facilities are first-come until capacity. Optional weekend/holiday registration is named only for Castle Rock/Diablo Foothills, Cull Canyon, and Don Castro; registered sessions cost $6 per person, limit each registration to five entrants, and run 11 AM-6 PM with water exit at 5:30 PM.",
          "observation_id": "observation-ebrpd-swimming-district-registration",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-swimming"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/recreation/swimming",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-swimming"
        }
      ],
      "subject": {
        "entity_id": "org-east-bay-regional-park-district",
        "kind": "organization",
        "name": "East Bay Regional Park District"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-algae-fish-testing-result",
        "evidence_ids": [
          "evidence-ebrpd-algae-fish-testing-result"
        ],
        "predicate": "published_fish_testing_result",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": {
          "ends_on": "2026-09-20",
          "starts_on": "2026-09-20"
        },
        "value": {
          "frequency": "annual",
          "microcystin_in_flesh_detected_to_date": false
        }
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-algae-fish-testing-result",
          "evidence_id": "evidence-ebrpd-algae-fish-testing-result",
          "notes": "",
          "observation_id": "observation-ebrpd-algae-fish-guidance",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "During an algae advisory, EBRPD advises avoiding unnecessary water contact and washing hands after handling fish or wet equipment. Fish fillets should be washed with tap or bottled water, guts and liver discarded, and fish cooked thoroughly. Reservoir fish are tested annually; at retrieval the page reported no microcystin detected to date in fish flesh from District-managed waters.",
          "observation_id": "observation-ebrpd-algae-fish-guidance",
          "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-blue-green-algae"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality/blue-green-algae",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-blue-green-algae"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    },
    {
      "claim": {
        "claim_id": "claim-ebrpd-water-quality-program-scope",
        "evidence_ids": [
          "evidence-ebrpd-water-quality-program-scope"
        ],
        "predicate": "water_quality_program_scope",
        "spatial_scope_ids": [
          "scope-ebrpd-water-quality-program"
        ],
        "subject_id": "program-ebrpd-hab-monitoring",
        "temporal_scope": null,
        "value": [
          "recreational_water",
          "drinking_water",
          "storm_water",
          "wastewater",
          "lakes",
          "creeks",
          "water_related_emergencies"
        ]
      },
      "evidence": [
        {
          "claim_id": "claim-ebrpd-water-quality-program-scope",
          "evidence_id": "evidence-ebrpd-water-quality-program-scope",
          "notes": "",
          "observation_id": "observation-ebrpd-water-quality-program",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "EBRPD routinely monitors recreational and drinking water, storm water, wastewater, lakes and creeks, and responds to sewage, oil, and hazardous-material incidents. Natural swim areas are sampled weekly April-October in collaboration with county environmental-health departments, with current data posted for safe recreation choices.",
          "observation_id": "observation-ebrpd-water-quality-program",
          "observed_at": null,
          "observer": "user-supplied page transcription",
          "retrieved_at": "2026-09-20T00:00:00+00:00",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "sources": [
        {
          "locator": "https://www.ebparks.org/natural-resources/water-quality",
          "publisher": "East Bay Regional Park District",
          "source_id": "source-ebrpd-current-water-quality"
        }
      ],
      "subject": {
        "entity_id": "program-ebrpd-hab-monitoring",
        "kind": "monitoring_program",
        "name": "EBRPD Harmful Algal Bloom Monitoring Program"
      }
    }
  ],
  "entity": {
    "entity_id": "program-ebrpd-hab-monitoring",
    "kind": "monitoring_program",
    "name": "EBRPD Harmful Algal Bloom Monitoring Program"
  },
  "gap_details": [
    {
      "claims": [
        {
          "claim": {
            "claim_id": "claim-del-valle-ebrpd-east-beach-algae",
            "evidence_ids": [
              "evidence-del-valle-ebrpd-east-beach-algae",
              "evidence-ebrpd-algae-east-beach-caution",
              "evidence-ebrpd-swimming-east-caution",
              "evidence-ebrpd-water-quality-east-caution"
            ],
            "predicate": "water_quality_advisory",
            "spatial_scope_ids": [
              "scope-del-valle-east-beach"
            ],
            "subject_id": "beach-del-valle-east",
            "temporal_scope": {
              "ends_on": "2026-09-20",
              "starts_on": "2026-09-20"
            },
            "value": "caution"
          },
          "evidence": [
            {
              "claim_id": "claim-del-valle-ebrpd-east-beach-algae",
              "evidence_id": "evidence-del-valle-ebrpd-east-beach-algae",
              "notes": "",
              "observation_id": "observation-del-valle-ebrpd-water-quality",
              "stance": "supports"
            },
            {
              "claim_id": "claim-del-valle-ebrpd-east-beach-algae",
              "evidence_id": "evidence-ebrpd-algae-east-beach-caution",
              "notes": "",
              "observation_id": "observation-ebrpd-algae-current-del-valle",
              "stance": "supports"
            },
            {
              "claim_id": "claim-del-valle-ebrpd-east-beach-algae",
              "evidence_id": "evidence-ebrpd-swimming-east-caution",
              "notes": "",
              "observation_id": "observation-ebrpd-swimming-current-beaches",
              "stance": "supports"
            },
            {
              "claim_id": "claim-del-valle-ebrpd-east-beach-algae",
              "evidence_id": "evidence-ebrpd-water-quality-east-caution",
              "notes": "",
              "observation_id": "observation-ebrpd-water-quality-current-del-valle",
              "stance": "supports"
            }
          ],
          "observations": [
            {
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