{
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  "well_purpose": [
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  "name": "PM-02 — Posto de combustível, jusante dos tanques (Belém/PA)",
  "well_driller": "Ambiental Norte Consultoria",
  "construction_date": "2023-11-08",
  "obs": "Poço de monitoramento de 2\" (ABNT NBR 15495-1) a jusante dos tanques subterrâneos, no aquífero livre do Barreiras. Benzeno detectado após vazamento em 2023; remediação por bombeamento e extração de vapores com queda das concentrações. Valores de BTEX em mg/L (µg/L nas notas).",
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      "authority": "Posto",
      "id": "PM-02",
      "primary": true
    },
    {
      "authority": "SEMAS-PA",
      "id": "LO 12877/2021 — PM-02"
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  ],
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    "lng": -48.485,
    "elevation": 11,
    "properties": {
      "timezone": "America/Belem",
      "crs": "EPSG:4326",
      "lat_precision": 0.00005,
      "lng_precision": 0.00005,
      "elevation_datum": "x-imbituba",
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      "original_crs": "EPSG:31982"
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      "to": 12,
      "diameter": 203,
      "drilling_method": "auger"
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      "to": 12,
      "type": "pvc",
      "diameter": 60
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  "reduction": [],
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      "to": 11,
      "type": "pvc",
      "diameter": 60,
      "screen_slot": 0.25,
      "slot_type": "slotted"
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  ],
  "surface_case": [],
  "hole_fill": [
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      "to": 0.5,
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      "diameter": 203,
      "description": "Calda de cimento com caixa de proteção afogada no piso"
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    {
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      "to": 4,
      "type": "seal",
      "diameter": 203,
      "description": "Bentonita em pellets hidratada"
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    {
      "from": 4,
      "to": 12,
      "type": "gravel_pack",
      "diameter": 203,
      "description": "Areia quartzosa selecionada 1–2 mm"
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      "to": 1.2,
      "description": "Aterro e base do piso",
      "color": "#a39a8a",
      "texture": {
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        "vocabulary": "fgdc"
      },
      "geologic_unit": "Aterro",
      "aquifer_unit": "Não aquífero"
    },
    {
      "from": 1.2,
      "to": 3.3,
      "description": "Solo arenoso amarelo-amarronzado",
      "color": "#c9a24a",
      "texture": {
        "code": 607,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Cobertura",
      "aquifer_unit": "Aquífero livre"
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    {
      "from": 3.3,
      "to": 6.7,
      "description": "Argila amarela",
      "color": "#d9b45a",
      "texture": {
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        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Aquitarde"
    },
    {
      "from": 6.7,
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      "description": "Areia média cinza-esbranquiçada",
      "color": "#d9d5c8",
      "texture": {
        "code": 607,
        "vocabulary": "fgdc"
      },
      "geologic_unit": "Grupo Barreiras",
      "aquifer_unit": "Sistema Aquífero Barreiras"
    }
  ],
  "fractures": [],
  "caves": [],
  "hydrodynamic_events": [
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      "id": "nv-1",
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      "datetime": "2024-02-20T08:30:00-03:00",
      "static_level": 2.84,
      "static_level_precision": 0.005,
      "measurement_method": "electric_probe",
      "operator": "Ambiental Norte Consultoria"
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    {
      "id": "nv-2",
      "type": "spot_measurement",
      "datetime": "2024-08-21T08:30:00-03:00",
      "static_level": 3.62,
      "static_level_precision": 0.005,
      "measurement_method": "electric_probe",
      "operator": "Ambiental Norte Consultoria"
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    {
      "id": "nv-3",
      "type": "spot_measurement",
      "datetime": "2025-02-18T08:30:00-03:00",
      "static_level": 2.71,
      "static_level_precision": 0.005,
      "measurement_method": "electric_probe",
      "operator": "Ambiental Norte Consultoria"
    },
    {
      "id": "nv-4",
      "type": "spot_measurement",
      "datetime": "2025-08-19T08:30:00-03:00",
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      "static_level_precision": 0.005,
      "measurement_method": "electric_probe",
      "operator": "Ambiental Norte Consultoria"
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      "datetime": "2024-02-20T10:00:00-03:00",
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            "vocabulary": "welldot"
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            "vocabulary": "welldot"
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          "value": 85,
          "measured_in": "field"
        },
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            "vocabulary": "welldot"
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          "measured_in": "field"
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          "measured_in": "lab",
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        {
          "parameter": {
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            "vocabulary": "cas"
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    {
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        "name": "Laboratório Ambiental Amazônia",
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          "measured_in": "field"
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          "parameter": {
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            "vocabulary": "cas"
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        },
        {
          "parameter": {
            "code": "100-41-4",
            "vocabulary": "cas"
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          "measured_in": "lab",
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        },
        {
          "parameter": {
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        {
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    {
      "id": "pm02-2025-02",
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        "device": "low_flow_pump"
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      "chain_of_custody": "CC-PM02-2025-02",
      "laboratory": {
        "name": "Laboratório Ambiental Amazônia",
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          "measured_in": "field"
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          "measured_in": "field"
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        {
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            "vocabulary": "welldot"
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          "parameter": {
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            "vocabulary": "cas"
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        {
          "parameter": {
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            "vocabulary": "cas"
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          "method": "US EPA 8260D",
          "notes": "4.1 µg/L"
        },
        {
          "parameter": {
            "code": "100-41-4",
            "vocabulary": "cas"
          },
          "value": 0.0009,
          "measured_in": "lab",
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        },
        {
          "parameter": {
            "code": "1330-20-7",
            "vocabulary": "cas"
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          "measured_in": "lab",
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          "parameter": {
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    {
      "id": "pm02-2025-08",
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            "value": 184
          },
          {
            "elapsed": 10,
            "parameter": {
              "code": "dissolved_oxygen",
              "vocabulary": "welldot"
            },
            "value": 3.2
          },
          {
            "elapsed": 20,
            "parameter": {
              "code": "ph",
              "vocabulary": "welldot"
            },
            "value": 6.15
          },
          {
            "elapsed": 20,
            "parameter": {
              "code": "specific_conductance",
              "vocabulary": "welldot"
            },
            "value": 180
          },
          {
            "elapsed": 20,
            "parameter": {
              "code": "dissolved_oxygen",
              "vocabulary": "welldot"
            },
            "value": 2.9
          },
          {
            "elapsed": 30,
            "parameter": {
              "code": "ph",
              "vocabulary": "welldot"
            },
            "value": 6.1
          },
          {
            "elapsed": 30,
            "parameter": {
              "code": "specific_conductance",
              "vocabulary": "welldot"
            },
            "value": 176
          },
          {
            "elapsed": 30,
            "parameter": {
              "code": "dissolved_oxygen",
              "vocabulary": "welldot"
            },
            "value": 2.6
          }
        ]
      },
      "preservation": "Frascos VOA com HCl; refrigeração a 4 °C",
      "chain_of_custody": "CC-PM02-2025-08",
      "laboratory": {
        "name": "Laboratório Ambiental Amazônia",
        "accreditation": "CRL 1147 (ISO/IEC 17025)",
        "report_number": "LAMZ-25/3103"
      },
      "results": [
        {
          "parameter": {
            "code": "ph",
            "vocabulary": "welldot"
          },
          "value": 6.1,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "specific_conductance",
            "vocabulary": "welldot"
          },
          "value": 176,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "dissolved_oxygen",
            "vocabulary": "welldot"
          },
          "value": 2.6,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "orp",
            "vocabulary": "welldot"
          },
          "value": 131,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "temperature",
            "vocabulary": "welldot"
          },
          "value": 28.9,
          "measured_in": "field"
        },
        {
          "parameter": {
            "code": "71-43-2",
            "vocabulary": "cas"
          },
          "qualifier": "not_detected",
          "detection_limit": 1,
          "measured_in": "lab",
          "method": "US EPA 8260D",
          "notes": "µg/L"
        },
        {
          "parameter": {
            "code": "108-88-3",
            "vocabulary": "cas"
          },
          "value": 0.0012,
          "measured_in": "lab",
          "method": "US EPA 8260D",
          "notes": "1.2 µg/L"
        },
        {
          "parameter": {
            "code": "100-41-4",
            "vocabulary": "cas"
          },
          "qualifier": "not_detected",
          "detection_limit": 1,
          "measured_in": "lab",
          "method": "US EPA 8260D",
          "notes": "µg/L"
        },
        {
          "parameter": {
            "code": "1330-20-7",
            "vocabulary": "cas"
          },
          "value": 0.0011,
          "measured_in": "lab",
          "method": "US EPA 8260D",
          "notes": "1.1 µg/L"
        },
        {
          "parameter": {
            "code": "total_petroleum_hydrocarbons",
            "vocabulary": "welldot"
          },
          "qualifier": "not_detected",
          "detection_limit": 0.05,
          "measured_in": "lab",
          "method": "US EPA 8015D"
        }
      ]
    }
  ],
  "history_logs": [
    {
      "id": "log-01",
      "datetime": "2023-11-08T16:00:00-03:00",
      "category": "event",
      "description": "Instalação do PM-02 e desenvolvimento por bailer até água clara."
    },
    {
      "id": "log-02",
      "datetime": "2023-11-09T08:00:00-03:00",
      "category": "status_change",
      "status": "active",
      "description": "Poço incluído na rede de monitoramento do posto."
    },
    {
      "id": "log-03",
      "datetime": "2024-03-05T10:00:00-03:00",
      "category": "incident",
      "severity": "high",
      "description": "Benzeno 48 µg/L, acima do valor de intervenção (5 µg/L). Remediação iniciada.",
      "sample_ids": [
        "pm02-2024-02"
      ]
    },
    {
      "id": "log-s1",
      "datetime": "2024-02-20T10:00:00-03:00",
      "category": "maintenance",
      "maintenance_type": "water_sampling",
      "sample_ids": [
        "pm02-2024-02"
      ],
      "hydrodynamic_event_ids": [
        "nv-1"
      ],
      "description": "Campanha semestral de baixa vazão."
    },
    {
      "id": "log-s2",
      "datetime": "2024-08-21T10:00:00-03:00",
      "category": "maintenance",
      "maintenance_type": "water_sampling",
      "sample_ids": [
        "pm02-2024-08"
      ],
      "hydrodynamic_event_ids": [
        "nv-2"
      ],
      "description": "Campanha semestral de baixa vazão."
    },
    {
      "id": "log-s3",
      "datetime": "2025-02-18T10:00:00-03:00",
      "category": "maintenance",
      "maintenance_type": "water_sampling",
      "sample_ids": [
        "pm02-2025-02"
      ],
      "hydrodynamic_event_ids": [
        "nv-3"
      ],
      "description": "Campanha semestral de baixa vazão."
    },
    {
      "id": "log-s4",
      "datetime": "2025-08-19T10:00:00-03:00",
      "category": "maintenance",
      "maintenance_type": "water_sampling",
      "sample_ids": [
        "pm02-2025-08"
      ],
      "hydrodynamic_event_ids": [
        "nv-4"
      ],
      "description": "Campanha semestral de baixa vazão."
    }
  ]
}