As part of the re-examination of the NOVACARB gas cogeneration activity in Laneuveville Devant Nancy (54), ATMOTERRA was commissioned to carry out a study on the atmospheric dispersion of pollutants emitted by the installation.

This air dispersion modelling was carried out as part of the Human Health Risk Assessment (HHRA) conducted by BG Consulting Engineers and Sterne Environnement. The objective of this study is to quantify, based on site data (emission characteristics, local climatic conditions), the air concentrations of various pollutants discharged by the site.

Photo (c) Nvacarb

The air dispersion modeling was carried out using the CALPUFF model, a Gaussian puff Lagrangian model validated and recommended by the US-EPA in complex situations. This modeling was based on metrological data calculated using 2 models: WRF and CALMET around the site. This process ensured accurate integration of wind and local weather changes induced by the landscape (topography, land use, etc.). 3 years of hourly data were used.

Discharge parameters are based on data provided by the operator and measurement values carried out in 2017 and 2018 on these same lines.