Grupa LOTOS operates one of the largest industrial sites in Gdańsk. It is no secret that crude oil processing involves a significant level of atmospheric emissions, which may affect the air quality beyond the site boundaries. The obligation to measure pollutant emissions is imposed by the applicable regulations of Polish law.

In 1976, we were the first in Poland to install and launch a professional, fully automated air quality monitoring system. Back then, air monitoring in Poland was at a rudimentary stage and relied on manual measurements, which delivered highly uncertain results. When it was placed in service, ours was the most advanced atmosphere monitoring system, not only in Poland but also in Europe. It was designed to comprise 18 monitoring stations located throughout the city of Gdańsk. It consisted of:

In 1995, the Agency of Regional Air Quality Monitoring in the Gdańsk metropolitan area (ARMAAG Foundation) was established as a professional institution whose sole objective was to monitor the condition of air within the Gdańsk-Gdynia-Sopot agglomeration. Its establishment made it necessary to reorganise the monitoring system we had developed earlier. Accordingly, we adapted our system to interoperate with the regional air quality monitoring within the Gdańsk agglomeration, measuring chiefly the level of pollutants from fuel combustion across the agglomeration. When deciding where to site the new air monitoring points, we focused only on pollutants specific to crude oil refining. We also bought two stations, to be included in the city's regional air quality monitoring system, with analysers designed to measure fuel combustion pollutants.

Currently, our air monitoring system comprises six stations located in the near vicinity of the refinery or within its premises. Five of them measure the concentrations of non-methane hydrocarbons, total hydrocarbons and methane, while three of them monitor, since February 2006, the levels of BTEX (standing for benzene, toluene, ethylbenzene and xylenes). It should be noted, though, than only non-methane hydrocarbons and BTEX are indicators of the refinery's environmental impact. As for methane, natural processes are the main source of this compound in the air. Additionally, one station located in the central part of the refinery is used to measure meteorological conditions. The picture below shows the locations of our stations, while the table details the parameters measured by each of them.

Air quality monitoring system around Grupa LOTOS' refinery



Station no / measurement conducted


(ul. Sitowie)


(ul. Zawiślańska)


(ul. Steczka)


(ul. Płońska)


(ul. Benzynowa)


(Stara sterownia)

Pollutant concentrations  
Benzene Nie Tak Tak Tak Nie Nie
Toluene Nie Tak Tak Tak Nie Nie
Ethylbenzene Nie Tak Tak Tak Nie Nie
m,p-xylenes Nie Tak Tak Tak Nie Nie
o-xylene Nie Tak Tak Tak Nie Nie
Methane Tak Tak Tak Tak Tak Nie
Non-methane hydrocarbons Tak Tak Tak Tak Tak Nie
Total hydrocarbons Tak Tak Tak Tak Tak Nie
Meteorological conditions  
Atmospheric pressure Tak Nie Nie Nie Tak Tak
Wind direction Tak Nie Nie Nie Tak Tak
Wind speed Tak Nie Nie Nie Tak Tak
Temperature Tak Nie Nie Nie Tak Tak
Humidity Tak Nie Nie Nie Tak Tak
Insolation Nie Nie Nie Nie Nie Tak
Precipitation Nie Nie Nie Nie Nie Tak
Average pollutant concentrations as measured by individual stations

Station 1

Station 2

Station 3

Station 4

Station 5