{
  "title": "Water Quality Sample Structure",
  "description": "Structural documentation for water quality sample records collected via Tetra Tech monitoring platforms.",
  "type": "object",
  "fields": [
    { "name": "id", "type": "string", "required": true },
    { "name": "stationId", "type": "string", "required": true },
    { "name": "stationName", "type": "string", "required": false },
    { "name": "collectionDate", "type": "string", "format": "date-time", "required": true },
    { "name": "collectedBy", "type": "string", "required": false },
    {
      "name": "location",
      "type": "object",
      "required": false,
      "fields": [
        { "name": "latitude", "type": "number", "required": true },
        { "name": "longitude", "type": "number", "required": true },
        { "name": "datum", "type": "string", "required": false }
      ]
    },
    {
      "name": "parameters",
      "type": "array",
      "required": true,
      "items": {
        "type": "object",
        "fields": [
          { "name": "name", "type": "string", "required": true },
          { "name": "value", "type": "number", "required": true },
          { "name": "unit", "type": "string", "required": true },
          { "name": "method", "type": "string", "required": false },
          { "name": "qualifier", "type": "string", "required": false }
        ]
      }
    },
    { "name": "labId", "type": "string", "required": false },
    { "name": "projectId", "type": "string", "required": false },
    { "name": "tags", "type": "array", "required": false },
    { "name": "created", "type": "string", "format": "date-time", "required": false }
  ]
}