{
  "role": "Exactly one hypothetical source; original three sources and background excluded.",
  "components": [
    {
      "component_id": "MOUNTAIN42_SINGLE_STACK",
      "group": "MountainPlant",
      "npri_id": null,
      "reported_stack_id": 18272,
      "reported_stack_name": "FCC",
      "latitude": 49.4591064453125,
      "longitude": -122.89276123046875,
      "annual_SO2_tonnes": 125.3,
      "reporting_year": 2024,
      "annual_quantity_role": "Inherited2024 FCC numerical rate prior for a hypothetical mountain source, not a real facility emission inventory.",
      "kg_s": 0.003973236935565703,
      "stack": {
        "height_AGL_m": 76.2,
        "diameter_m": 2.0,
        "exit_velocity_m_s": 33.0,
        "exit_temperature_K": 668.15
      },
      "parameter_evidence": "Official current Access bulk database, linked to2024 SO2 report, dictionary units m/m/s/Celsius",
      "geometry_valid_from_unknown": true,
      "thermal_parameters_role": "Reported average, not live2026 exhaust measurements",
      "rise_policy": "Same final r04 finite-density entraining integral plume from the outlet, driven by the actual new mountain source column.",
      "group_index": 0,
      "hypothetical": true,
      "template_npri_id": 2776
    }
  ],
  "terrain_seed": 42
}