{
  "$schema": "https://welldot.org/schema/v2/well.schema.json",
  "version": "2.4",
  "x-welldot-example": {
    "illustrative": true,
    "based_on": "https://siagasweb.sgb.gov.br/layout/detalhe.php?ponto=1500001109"
  },
  "well_type": "tubular",
  "well_purpose": [
    "production"
  ],
  "name": "Poço comunitário — Vila Nazaré (Icoaraci, Belém/PA)",
  "well_driller": "Poços Icoaraci Ltda.",
  "construction_date": "1985-01-15",
  "obs": "Poço comunitário raso no Barreiras semiconfinado. Água ácida (pH < 5), agressiva e pouco mineralizada. Série de qualidade com resultados abaixo do limite de detecção, duplicata de campo, branco e contaminação bacteriológica em 2019.",
  "well_id": [
    {
      "authority": "Associação de moradores",
      "id": "PC-45",
      "primary": true
    }
  ],
  "location": {
    "lat": -1.325,
    "lng": -48.44806,
    "elevation": 10,
    "properties": {
      "timezone": "America/Belem",
      "crs": "EPSG:4326",
      "lat_precision": 0.0003,
      "lng_precision": 0.0003,
      "elevation_datum": "x-imbituba",
      "elevation_precision": 5,
      "original_crs": "EPSG:31982"
    }
  },
  "well_depth": 60,
  "bore_hole": [
    {
      "from": 0,
      "to": 60,
      "diameter": 305,
      "drilling_method": "rotary"
    }
  ],
  "well_case": [
    {
      "from": -0.6,
      "to": 48,
      "type": "pvc",
      "diameter": 168
    }
  ],
  "reduction": [],
  "well_screen": [
    {
      "from": 48,
      "to": 60,
      "type": "pvc",
      "diameter": 168,
      "screen_slot": 0.75,
      "slot_type": "slotted"
    }
  ],
  "surface_case": [],
  "hole_fill": [
    {
      "from": 0,
      "to": 3,
      "type": "seal",
      "diameter": 305,
      "description": "Selo de calda de cimento"
    },
    {
      "from": 3,
      "to": 60,
      "type": "gravel_pack",
      "diameter": 305,
      "description": "Cascalho fino lavado"
    }
  ],
  "lithology": [
    {
      "from": 0,
      "to": 3,
      "description": "Solo amarelo",
      "color": "#d9b45a",
      "texture": {
        "code": 612,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Cobertura",
      "aquifer_unit": "Não aquífero"
    },
    {
      "from": 3,
      "to": 14,
      "description": "Argila arenosa amarelo-alaranjada",
      "color": "#d98b3a",
      "texture": {
        "code": 619,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Aquitarde"
    },
    {
      "from": 14,
      "to": 23,
      "description": "Areia fina amarelo-avermelhada",
      "color": "#d9925a",
      "texture": {
        "code": 607,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Sistema Aquífero Barreiras"
    },
    {
      "from": 23,
      "to": 34,
      "description": "Areia argilosa amarelo-avermelhada",
      "color": "#c9845a",
      "texture": {
        "code": 612,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Sistema Aquífero Barreiras"
    },
    {
      "from": 34,
      "to": 48,
      "description": "Argila areno-siltosa amarelo-avermelhada",
      "color": "#b9784e",
      "texture": {
        "code": 619,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Aquitarde"
    },
    {
      "from": 48,
      "to": 60,
      "description": "Areia média amarelo-avermelhada",
      "color": "#d9a06a",
      "texture": {
        "code": 607,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Sistema Aquífero Barreiras"
    }
  ],
  "fractures": [],
  "caves": [],
  "hydrodynamic_events": [
    {
      "id": "evt-01",
      "type": "constant_rate",
      "datetime": "1997-06-04T07:00:00-03:00",
      "equipment": "Bomba injetora",
      "static_level": 3.43,
      "steps": [
        {
          "rate": 5,
          "duration": 720,
          "readings": [
            {
              "elapsed": 1,
              "depth": 6.35
            },
            {
              "elapsed": 2,
              "depth": 6.56
            },
            {
              "elapsed": 3,
              "depth": 6.68
            },
            {
              "elapsed": 5,
              "depth": 6.83
            },
            {
              "elapsed": 7,
              "depth": 6.93
            },
            {
              "elapsed": 10,
              "depth": 7.03
            },
            {
              "elapsed": 15,
              "depth": 7.15
            },
            {
              "elapsed": 20,
              "depth": 7.24
            },
            {
              "elapsed": 30,
              "depth": 7.36
            },
            {
              "elapsed": 45,
              "depth": 7.48
            },
            {
              "elapsed": 60,
              "depth": 7.56
            },
            {
              "elapsed": 90,
              "depth": 7.68
            },
            {
              "elapsed": 120,
              "depth": 7.77
            },
            {
              "elapsed": 180,
              "depth": 7.89
            },
            {
              "elapsed": 240,
              "depth": 7.97
            },
            {
              "elapsed": 360,
              "depth": 8.09
            },
            {
              "elapsed": 480,
              "depth": 8.18
            },
            {
              "elapsed": 600,
              "depth": 8.25
            },
            {
              "elapsed": 720,
              "depth": 8.3
            }
          ]
        }
      ],
      "recovery": {
        "readings": [
          {
            "elapsed": 1,
            "depth": 5.38
          },
          {
            "elapsed": 2,
            "depth": 5.17
          },
          {
            "elapsed": 3,
            "depth": 5.05
          },
          {
            "elapsed": 5,
            "depth": 4.9
          },
          {
            "elapsed": 10,
            "depth": 4.7
          },
          {
            "elapsed": 15,
            "depth": 4.58
          },
          {
            "elapsed": 30,
            "depth": 4.38
          },
          {
            "elapsed": 60,
            "depth": 4.19
          },
          {
            "elapsed": 120,
            "depth": 4.01
          },
          {
            "elapsed": 240,
            "depth": 3.84
          }
        ]
      }
    },
    {
      "id": "evt-02",
      "type": "spot_measurement",
      "datetime": "2025-03-18T07:30:00-03:00",
      "static_level": 4.12,
      "static_level_precision": 0.01,
      "measurement_method": "electric_probe"
    }
  ],
  "cement_pad": {
    "type": "concrete",
    "width": 1,
    "thickness": 0.1,
    "length": 1
  },
  "aquifer_analysis": [
    {
      "id": "an-1997",
      "datetime": "1997-06-06T10:00:00-03:00",
      "source_event_ids": [
        "evt-01"
      ],
      "method": "cooper_jacob",
      "static_level": 3.43,
      "static_level_source_id": "evt-01",
      "dynamic_level": 8.3,
      "flow_rate": 5,
      "specific_capacity": 1.027,
      "transmissivity": 32.2
    }
  ],
  "pump_installations": [
    {
      "id": "pump-2012",
      "installed_at": "2012-02-10T09:00:00-03:00",
      "type": "submersible",
      "power_source": "grid",
      "manufacturer": "Schneider",
      "model": "BCS 4\"",
      "intake_depth": 30,
      "rated_flow_rate": 4,
      "rated_power": 1.5,
      "riser_diameter": 40,
      "riser_material": "pvc",
      "check_valve": true
    }
  ],
  "water_samples": [
    {
      "id": "am-1997",
      "datetime": "1997-06-04T15:00:00-03:00",
      "sample_type": "routine",
      "sampling_method": "pump_discharge",
      "sampling_point": {
        "type": "pump_discharge"
      },
      "notes": "Laudo antigo: valores negativos na planilha de origem indicavam \"abaixo do limite de detecção\".",
      "results": [
        {
          "parameter": {
            "code": "turbidity_ntu",
            "vocabulary": "welldot"
          },
          "value": 0.5,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "apparent_color",
            "vocabulary": "welldot"
          },
          "value": 5,
          "measured_in": "lab",
          "qualifier": "<"
        },
        {
          "parameter": {
            "code": "ph",
            "vocabulary": "welldot"
          },
          "value": 4.8,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "carbonate",
            "vocabulary": "welldot"
          },
          "value": 3,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "chloride",
            "vocabulary": "welldot"
          },
          "value": 8,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "hardness_total_as_caco3",
            "vocabulary": "welldot"
          },
          "value": 28,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "iron",
            "vocabulary": "welldot"
          },
          "value": 0.05,
          "measured_in": "lab",
          "qualifier": "<",
          "fraction": "total"
        },
        {
          "parameter": {
            "code": "ammonia_as_n",
            "vocabulary": "welldot"
          },
          "value": 0.05,
          "measured_in": "lab",
          "qualifier": "<"
        },
        {
          "parameter": {
            "code": "nitrite_as_no2",
            "vocabulary": "welldot"
          },
          "value": 0.001,
          "measured_in": "lab",
          "qualifier": "<"
        },
        {
          "parameter": {
            "code": "nitrate_as_no3",
            "vocabulary": "welldot"
          },
          "value": 2.5,
          "measured_in": "lab"
        }
      ]
    },
    {
      "id": "am-2019",
      "datetime": "2019-03-12T09:00:00-03:00",
      "sample_type": "routine",
      "campaign": "Vigilância municipal 2019",
      "sampling_method": "pump_discharge",
      "sampling_point": {
        "type": "pump_discharge"
      },
      "collected_by": "Vigilância Sanitária Municipal",
      "laboratory": {
        "name": "Laboratório Central do Estado",
        "report_number": "LACEN-19/08812"
      },
      "results": [
        {
          "parameter": {
            "code": "ph",
            "vocabulary": "welldot"
          },
          "value": 4.7,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "specific_conductance",
            "vocabulary": "welldot"
          },
          "value": 58,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "nitrate_as_n",
            "vocabulary": "welldot"
          },
          "value": 1.6,
          "measured_in": "lab"
        },
        {
          "parameter": {
            "code": "total_coliforms",
            "vocabulary": "welldot"
          },
          "presence": true,
          "measured_in": "lab",
          "method": "SMEWW 9223 B"
        },
        {
          "parameter": {
            "code": "e_coli",
            "vocabulary": "welldot"
          },
          "presence": true,
          "measured_in": "lab",
          "method": "SMEWW 9223 B"
        }
      ]
    },
    {
      "id": "am-2025",
      "datetime": "2025-03-18T08:30:00-03:00",
      "sample_type": "routine",
      "campaign": "Monitoramento 2025",
      "sampling_method": "volumetric_purge",
      "sampling_point": {
        "type": "pump_discharge"
      },
      "static_level_event_id": "evt-02",
      "collected_by": "Consultoria Hidroambiental Pará",
      "purge": {
        "duration": 20,
        "volume": 1.3,
        "flow_rate": 4,
        "stabilized": true,
        "readings": [
          {
            "elapsed": 0,
            "parameter": {
              "code": "ph",
              "vocabulary": "welldot"
            },
            "value": 4.9
          },
          {
            "elapsed": 0,
            "parameter": {
              "code": "specific_conductance",
              "vocabulary": "welldot"
            },
            "value": 74
          },
          {
            "elapsed": 0,
            "parameter": {
              "code": "temperature",
              "vocabulary": "welldot"
            },
            "value": 28.6
          },
          {
            "elapsed": 10,
            "parameter": {
              "code": "ph",
              "vocabulary": "welldot"
            },
            "value": 4.72
          },
          {
            "elapsed": 10,
            "parameter": {
              "code": "specific_conductance",
              "vocabulary": "welldot"
            },
            "value": 66
          },
          {
            "elapsed": 10,
            "parameter": {
              "code": "temperature",
              "vocabulary": "welldot"
            },
            "value": 28.3
          },
          {
            "elapsed": 20,
            "parameter": {
              "code": "ph",
              "vocabulary": "welldot"
            },
            "value": 4.7
          },
          {
            "elapsed": 20,
            "parameter": {
              "code": "specific_conductance",
              "vocabulary": "welldot"
            },
            "value": 65
          },
          {
            "elapsed": 20,
            "parameter": {
              "code": "temperature",
              "vocabulary": "welldot"
            },
            "value": 28.3
          }
        ]
      },
      "preservation": "Refrigeração a 4 °C; HNO₃ para metais; tiossulfato para microbiologia",
      "chain_of_custody": "CC-25-0318",
      "laboratory": {
        "name": "Laboratório Amazônia Análises",
        "accreditation": "CRL 0995 (ISO/IEC 17025)",
        "report_number": "LAA-25/0618"
      },
      "results": [
        {
          "parameter": {
            "code": "temperature",
            "vocabulary": "welldot"
          },
          "value": 28.3,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "ph",
            "vocabulary": "welldot"
          },
          "value": 4.7,
          "measured_in": "field",
          "value_precision": 0.05
        },
        {
          "parameter": {
            "code": "specific_conductance",
            "vocabulary": "welldot"
          },
          "value": 65,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "dissolved_oxygen",
            "vocabulary": "welldot"
          },
          "value": 5.1,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "turbidity_ntu",
            "vocabulary": "welldot"
          },
          "value": 0.3,
          "measured_in": "lab",
          "method": "SMEWW 2130 B"
        },
        {
          "parameter": {
            "code": "apparent_color",
            "vocabulary": "welldot"
          },
          "value": 5,
          "measured_in": "lab",
          "method": "SMEWW 2120 B",
          "qualifier": "<"
        },
        {
          "parameter": {
            "code": "total_dissolved_solids",
            "vocabulary": "welldot"
          },
          "value": 38,
          "measured_in": "lab",
          "method": "SMEWW 2540 C"
        },
        {
          "parameter": {
            "code": "alkalinity_total_as_caco3",
            "vocabulary": "welldot"
          },
          "value": 4.2,
          "measured_in": "lab",
          "method": "SMEWW 2320 B"
        },
        {
          "parameter": {
            "code": "hardness_total_as_caco3",
            "vocabulary": "welldot"
          },
          "value": 9.8,
          "measured_in": "lab",
          "method": "SMEWW 2340 C"
        },
        {
          "parameter": {
            "code": "free_co2",
            "vocabulary": "welldot"
          },
          "value": 42,
          "measured_in": "lab",
          "method": "SMEWW 4500-CO₂ C"
        },
        {
          "parameter": {
            "code": "sodium",
            "vocabulary": "welldot"
          },
          "value": 4.6,
          "measured_in": "lab",
          "method": "SMEWW 3120 B"
        },
        {
          "parameter": {
            "code": "chloride",
            "vocabulary": "welldot"
          },
          "value": 9.1,
          "measured_in": "lab",
          "method": "SMEWW 4500-Cl⁻ B"
        },
        {
          "parameter": {
            "code": "nitrate_as_n",
            "vocabulary": "welldot"
          },
          "value": 2.8,
          "measured_in": "lab",
          "method": "SMEWW 4500-NO₃⁻ E"
        },
        {
          "parameter": {
            "code": "nitrite_as_n",
            "vocabulary": "welldot"
          },
          "qualifier": "not_detected",
          "detection_limit": 0.005,
          "measured_in": "lab",
          "method": "SMEWW 4500-NO₂⁻ B"
        },
        {
          "parameter": {
            "code": "ammonia_as_n",
            "vocabulary": "welldot"
          },
          "value": 0.06,
          "measured_in": "lab",
          "method": "SMEWW 4500-NH₃ F",
          "qualifier": "estimated",
          "detection_limit": 0.02,
          "quantification_limit": 0.1
        },
        {
          "parameter": {
            "code": "iron",
            "vocabulary": "welldot"
          },
          "value": 0.05,
          "measured_in": "lab",
          "method": "US EPA 200.7",
          "qualifier": "<",
          "fraction": "total"
        },
        {
          "parameter": {
            "code": "aluminum",
            "vocabulary": "welldot"
          },
          "value": 0.14,
          "measured_in": "lab",
          "method": "US EPA 200.7",
          "fraction": "total",
          "notes": "Típico de água ácida do Barreiras."
        },
        {
          "parameter": {
            "code": "total_coliforms",
            "vocabulary": "welldot"
          },
          "presence": false,
          "measured_in": "lab",
          "method": "SMEWW 9223 B"
        },
        {
          "parameter": {
            "code": "e_coli",
            "vocabulary": "welldot"
          },
          "presence": false,
          "measured_in": "lab",
          "method": "SMEWW 9223 B"
        }
      ]
    },
    {
      "id": "am-2025-dup",
      "datetime": "2025-03-18T08:30:00-03:00",
      "sample_type": "field_duplicate",
      "parent_sample_id": "am-2025",
      "sampling_method": "volumetric_purge",
      "sampling_point": {
        "type": "pump_discharge"
      },
      "collected_by": "Consultoria Hidroambiental Pará",
      "laboratory": {
        "name": "Laboratório Amazônia Análises",
        "report_number": "LAA-25/0619"
      },
      "results": [
        {
          "parameter": {
            "code": "nitrate_as_n",
            "vocabulary": "welldot"
          },
          "value": 2.7,
          "measured_in": "lab",
          "method": "SMEWW 4500-NO₃⁻ E"
        },
        {
          "parameter": {
            "code": "chloride",
            "vocabulary": "welldot"
          },
          "value": 9.3,
          "measured_in": "lab",
          "method": "SMEWW 4500-Cl⁻ B"
        },
        {
          "parameter": {
            "code": "aluminum",
            "vocabulary": "welldot"
          },
          "value": 0.13,
          "measured_in": "lab",
          "method": "US EPA 200.7",
          "fraction": "total"
        }
      ]
    },
    {
      "id": "am-2025-fb",
      "datetime": "2025-03-18T08:45:00-03:00",
      "sample_type": "field_blank",
      "collected_by": "Consultoria Hidroambiental Pará",
      "laboratory": {
        "name": "Laboratório Amazônia Análises",
        "report_number": "LAA-25/0620"
      },
      "results": [
        {
          "parameter": {
            "code": "nitrate_as_n",
            "vocabulary": "welldot"
          },
          "qualifier": "not_detected",
          "detection_limit": 0.02,
          "measured_in": "lab",
          "method": "SMEWW 4500-NO₃⁻ E"
        },
        {
          "parameter": {
            "code": "aluminum",
            "vocabulary": "welldot"
          },
          "qualifier": "not_detected",
          "detection_limit": 0.01,
          "measured_in": "lab",
          "method": "US EPA 200.7",
          "fraction": "total"
        }
      ]
    }
  ],
  "history_logs": [
    {
      "id": "log-00",
      "datetime": "1985-02-01T08:00:00-03:00",
      "category": "status_change",
      "status": "active",
      "description": "Poço entregue à associação de moradores."
    },
    {
      "id": "log-01",
      "datetime": "2019-03-20T10:00:00-03:00",
      "category": "incident",
      "severity": "high",
      "description": "E. coli presente: tampa do poço quebrada e fossa a 12 m. Consumo suspenso.",
      "sample_ids": [
        "am-2019"
      ]
    },
    {
      "id": "log-02",
      "datetime": "2019-03-22T09:00:00-03:00",
      "category": "maintenance",
      "maintenance_type": "disinfection",
      "description": "Desinfecção com hipoclorito (50 mg/L, 24 h), nova tampa e laje sanitária."
    },
    {
      "id": "log-03",
      "datetime": "2025-03-18T08:30:00-03:00",
      "category": "maintenance",
      "maintenance_type": "water_sampling",
      "sample_ids": [
        "am-2025",
        "am-2025-dup",
        "am-2025-fb"
      ],
      "hydrodynamic_event_ids": [
        "evt-02"
      ],
      "description": "Campanha com duplicata de campo e branco."
    }
  ]
}